2 * mini-amd64.c: AMD64 backend for the Mono code generator
7 * Paolo Molaro (lupus@ximian.com)
8 * Dietmar Maurer (dietmar@ximian.com)
10 * Zoltan Varga (vargaz@gmail.com)
12 * (C) 2003 Ximian, Inc.
21 #include <mono/metadata/appdomain.h>
22 #include <mono/metadata/debug-helpers.h>
23 #include <mono/metadata/threads.h>
24 #include <mono/metadata/profiler-private.h>
25 #include <mono/metadata/mono-debug.h>
26 #include <mono/utils/mono-math.h>
27 #include <mono/utils/mono-mmap.h>
31 #include "mini-amd64.h"
32 #include "cpu-amd64.h"
33 #include "debugger-agent.h"
36 * Can't define this in mini-amd64.h cause that would turn on the generic code in
39 #define MONO_ARCH_IMT_REG AMD64_R11
41 static gint lmf_tls_offset = -1;
42 static gint lmf_addr_tls_offset = -1;
43 static gint appdomain_tls_offset = -1;
46 static gboolean optimize_for_xen = TRUE;
48 #define optimize_for_xen 0
51 #define ALIGN_TO(val,align) ((((guint64)val) + ((align) - 1)) & ~((align) - 1))
53 #define IS_IMM32(val) ((((guint64)val) >> 32) == 0)
55 #define IS_REX(inst) (((inst) >= 0x40) && ((inst) <= 0x4f))
58 /* Under windows, the calling convention is never stdcall */
59 #define CALLCONV_IS_STDCALL(call_conv) (FALSE)
61 #define CALLCONV_IS_STDCALL(call_conv) ((call_conv) == MONO_CALL_STDCALL)
64 /* amd64_mov_reg_imm () */
65 #define BREAKPOINT_SIZE 8
67 /* This mutex protects architecture specific caches */
68 #define mono_mini_arch_lock() EnterCriticalSection (&mini_arch_mutex)
69 #define mono_mini_arch_unlock() LeaveCriticalSection (&mini_arch_mutex)
70 static CRITICAL_SECTION mini_arch_mutex;
73 mono_breakpoint_info [MONO_BREAKPOINT_ARRAY_SIZE];
76 * The code generated for sequence points reads from this location, which is
77 * made read-only when single stepping is enabled.
79 static gpointer ss_trigger_page;
81 /* Enabled breakpoints read from this trigger page */
82 static gpointer bp_trigger_page;
85 /* On Win64 always reserve first 32 bytes for first four arguments */
86 #define ARGS_OFFSET 48
88 #define ARGS_OFFSET 16
90 #define GP_SCRATCH_REG AMD64_R11
93 * AMD64 register usage:
94 * - callee saved registers are used for global register allocation
95 * - %r11 is used for materializing 64 bit constants in opcodes
96 * - the rest is used for local allocation
100 * Floating point comparison results:
110 mono_arch_regname (int reg)
113 case AMD64_RAX: return "%rax";
114 case AMD64_RBX: return "%rbx";
115 case AMD64_RCX: return "%rcx";
116 case AMD64_RDX: return "%rdx";
117 case AMD64_RSP: return "%rsp";
118 case AMD64_RBP: return "%rbp";
119 case AMD64_RDI: return "%rdi";
120 case AMD64_RSI: return "%rsi";
121 case AMD64_R8: return "%r8";
122 case AMD64_R9: return "%r9";
123 case AMD64_R10: return "%r10";
124 case AMD64_R11: return "%r11";
125 case AMD64_R12: return "%r12";
126 case AMD64_R13: return "%r13";
127 case AMD64_R14: return "%r14";
128 case AMD64_R15: return "%r15";
133 static const char * packed_xmmregs [] = {
134 "p:xmm0", "p:xmm1", "p:xmm2", "p:xmm3", "p:xmm4", "p:xmm5", "p:xmm6", "p:xmm7", "p:xmm8",
135 "p:xmm9", "p:xmm10", "p:xmm11", "p:xmm12", "p:xmm13", "p:xmm14", "p:xmm15"
138 static const char * single_xmmregs [] = {
139 "s:xmm0", "s:xmm1", "s:xmm2", "s:xmm3", "s:xmm4", "s:xmm5", "s:xmm6", "s:xmm7", "s:xmm8",
140 "s:xmm9", "s:xmm10", "s:xmm11", "s:xmm12", "s:xmm13", "s:xmm14", "s:xmm15"
144 mono_arch_fregname (int reg)
146 if (reg < AMD64_XMM_NREG)
147 return single_xmmregs [reg];
153 mono_arch_xregname (int reg)
155 if (reg < AMD64_XMM_NREG)
156 return packed_xmmregs [reg];
161 G_GNUC_UNUSED static void
166 G_GNUC_UNUSED static gboolean
169 static int count = 0;
172 if (!getenv ("COUNT"))
175 if (count == atoi (getenv ("COUNT"))) {
179 if (count > atoi (getenv ("COUNT"))) {
190 return debug_count ();
196 static inline gboolean
197 amd64_is_near_call (guint8 *code)
200 if ((code [0] >= 0x40) && (code [0] <= 0x4f))
203 return code [0] == 0xe8;
207 amd64_patch (unsigned char* code, gpointer target)
212 if ((code [0] >= 0x40) && (code [0] <= 0x4f)) {
217 if ((code [0] & 0xf8) == 0xb8) {
218 /* amd64_set_reg_template */
219 *(guint64*)(code + 1) = (guint64)target;
221 else if ((code [0] == 0x8b) && rex && x86_modrm_mod (code [1]) == 0 && x86_modrm_rm (code [1]) == 5) {
222 /* mov 0(%rip), %dreg */
223 *(guint32*)(code + 2) = (guint32)(guint64)target - 7;
225 else if ((code [0] == 0xff) && (code [1] == 0x15)) {
226 /* call *<OFFSET>(%rip) */
227 *(guint32*)(code + 2) = ((guint32)(guint64)target) - 7;
229 else if ((code [0] == 0xe8)) {
231 gint64 disp = (guint8*)target - (guint8*)code;
232 g_assert (amd64_is_imm32 (disp));
233 x86_patch (code, (unsigned char*)target);
236 x86_patch (code, (unsigned char*)target);
240 mono_amd64_patch (unsigned char* code, gpointer target)
242 amd64_patch (code, target);
251 ArgValuetypeAddrInIReg,
252 ArgNone /* only in pair_storage */
260 /* Only if storage == ArgValuetypeInReg */
261 ArgStorage pair_storage [2];
270 gboolean need_stack_align;
271 gboolean vtype_retaddr;
277 #define DEBUG(a) if (cfg->verbose_level > 1) a
282 static AMD64_Reg_No param_regs [] = { AMD64_RCX, AMD64_RDX, AMD64_R8, AMD64_R9 };
284 static AMD64_Reg_No return_regs [] = { AMD64_RAX, AMD64_RDX };
288 static AMD64_Reg_No param_regs [] = { AMD64_RDI, AMD64_RSI, AMD64_RDX, AMD64_RCX, AMD64_R8, AMD64_R9 };
290 static AMD64_Reg_No return_regs [] = { AMD64_RAX, AMD64_RDX };
294 add_general (guint32 *gr, guint32 *stack_size, ArgInfo *ainfo)
296 ainfo->offset = *stack_size;
298 if (*gr >= PARAM_REGS) {
299 ainfo->storage = ArgOnStack;
300 (*stack_size) += sizeof (gpointer);
303 ainfo->storage = ArgInIReg;
304 ainfo->reg = param_regs [*gr];
310 #define FLOAT_PARAM_REGS 4
312 #define FLOAT_PARAM_REGS 8
316 add_float (guint32 *gr, guint32 *stack_size, ArgInfo *ainfo, gboolean is_double)
318 ainfo->offset = *stack_size;
320 if (*gr >= FLOAT_PARAM_REGS) {
321 ainfo->storage = ArgOnStack;
322 (*stack_size) += sizeof (gpointer);
325 /* A double register */
327 ainfo->storage = ArgInDoubleSSEReg;
329 ainfo->storage = ArgInFloatSSEReg;
335 typedef enum ArgumentClass {
343 merge_argument_class_from_type (MonoType *type, ArgumentClass class1)
345 ArgumentClass class2 = ARG_CLASS_NO_CLASS;
348 ptype = mini_type_get_underlying_type (NULL, type);
349 switch (ptype->type) {
350 case MONO_TYPE_BOOLEAN:
360 case MONO_TYPE_STRING:
361 case MONO_TYPE_OBJECT:
362 case MONO_TYPE_CLASS:
363 case MONO_TYPE_SZARRAY:
365 case MONO_TYPE_FNPTR:
366 case MONO_TYPE_ARRAY:
369 class2 = ARG_CLASS_INTEGER;
374 class2 = ARG_CLASS_INTEGER;
376 class2 = ARG_CLASS_SSE;
380 case MONO_TYPE_TYPEDBYREF:
381 g_assert_not_reached ();
383 case MONO_TYPE_GENERICINST:
384 if (!mono_type_generic_inst_is_valuetype (ptype)) {
385 class2 = ARG_CLASS_INTEGER;
389 case MONO_TYPE_VALUETYPE: {
390 MonoMarshalType *info = mono_marshal_load_type_info (ptype->data.klass);
393 for (i = 0; i < info->num_fields; ++i) {
395 class2 = merge_argument_class_from_type (info->fields [i].field->type, class2);
400 g_assert_not_reached ();
404 if (class1 == class2)
406 else if (class1 == ARG_CLASS_NO_CLASS)
408 else if ((class1 == ARG_CLASS_MEMORY) || (class2 == ARG_CLASS_MEMORY))
409 class1 = ARG_CLASS_MEMORY;
410 else if ((class1 == ARG_CLASS_INTEGER) || (class2 == ARG_CLASS_INTEGER))
411 class1 = ARG_CLASS_INTEGER;
413 class1 = ARG_CLASS_SSE;
419 add_valuetype (MonoGenericSharingContext *gsctx, MonoMethodSignature *sig, ArgInfo *ainfo, MonoType *type,
421 guint32 *gr, guint32 *fr, guint32 *stack_size)
423 guint32 size, quad, nquads, i;
424 ArgumentClass args [2];
425 MonoMarshalType *info = NULL;
427 MonoGenericSharingContext tmp_gsctx;
428 gboolean pass_on_stack = FALSE;
431 * The gsctx currently contains no data, it is only used for checking whenever
432 * open types are allowed, some callers like mono_arch_get_argument_info ()
433 * don't pass it to us, so work around that.
438 klass = mono_class_from_mono_type (type);
439 size = mini_type_stack_size_full (gsctx, &klass->byval_arg, NULL, sig->pinvoke);
441 if (!sig->pinvoke && !disable_vtypes_in_regs && ((is_return && (size == 8)) || (!is_return && (size <= 16)))) {
442 /* We pass and return vtypes of size 8 in a register */
443 } else if (!sig->pinvoke || (size == 0) || (size > 16)) {
444 pass_on_stack = TRUE;
448 pass_on_stack = TRUE;
453 /* Allways pass in memory */
454 ainfo->offset = *stack_size;
455 *stack_size += ALIGN_TO (size, 8);
456 ainfo->storage = ArgOnStack;
461 /* FIXME: Handle structs smaller than 8 bytes */
462 //if ((size % 8) != 0)
471 /* Always pass in 1 or 2 integer registers */
472 args [0] = ARG_CLASS_INTEGER;
473 args [1] = ARG_CLASS_INTEGER;
474 /* Only the simplest cases are supported */
475 if (is_return && nquads != 1) {
476 args [0] = ARG_CLASS_MEMORY;
477 args [1] = ARG_CLASS_MEMORY;
481 * Implement the algorithm from section 3.2.3 of the X86_64 ABI.
482 * The X87 and SSEUP stuff is left out since there are no such types in
485 info = mono_marshal_load_type_info (klass);
489 if (info->native_size > 16) {
490 ainfo->offset = *stack_size;
491 *stack_size += ALIGN_TO (info->native_size, 8);
492 ainfo->storage = ArgOnStack;
497 switch (info->native_size) {
498 case 1: case 2: case 4: case 8:
502 ainfo->storage = ArgOnStack;
503 ainfo->offset = *stack_size;
504 *stack_size += ALIGN_TO (info->native_size, 8);
507 ainfo->storage = ArgValuetypeAddrInIReg;
509 if (*gr < PARAM_REGS) {
510 ainfo->pair_storage [0] = ArgInIReg;
511 ainfo->pair_regs [0] = param_regs [*gr];
515 ainfo->pair_storage [0] = ArgOnStack;
516 ainfo->offset = *stack_size;
525 args [0] = ARG_CLASS_NO_CLASS;
526 args [1] = ARG_CLASS_NO_CLASS;
527 for (quad = 0; quad < nquads; ++quad) {
530 ArgumentClass class1;
532 if (info->num_fields == 0)
533 class1 = ARG_CLASS_MEMORY;
535 class1 = ARG_CLASS_NO_CLASS;
536 for (i = 0; i < info->num_fields; ++i) {
537 size = mono_marshal_type_size (info->fields [i].field->type,
538 info->fields [i].mspec,
539 &align, TRUE, klass->unicode);
540 if ((info->fields [i].offset < 8) && (info->fields [i].offset + size) > 8) {
541 /* Unaligned field */
545 /* Skip fields in other quad */
546 if ((quad == 0) && (info->fields [i].offset >= 8))
548 if ((quad == 1) && (info->fields [i].offset < 8))
551 class1 = merge_argument_class_from_type (info->fields [i].field->type, class1);
553 g_assert (class1 != ARG_CLASS_NO_CLASS);
554 args [quad] = class1;
558 /* Post merger cleanup */
559 if ((args [0] == ARG_CLASS_MEMORY) || (args [1] == ARG_CLASS_MEMORY))
560 args [0] = args [1] = ARG_CLASS_MEMORY;
562 /* Allocate registers */
567 ainfo->storage = ArgValuetypeInReg;
568 ainfo->pair_storage [0] = ainfo->pair_storage [1] = ArgNone;
569 for (quad = 0; quad < nquads; ++quad) {
570 switch (args [quad]) {
571 case ARG_CLASS_INTEGER:
572 if (*gr >= PARAM_REGS)
573 args [quad] = ARG_CLASS_MEMORY;
575 ainfo->pair_storage [quad] = ArgInIReg;
577 ainfo->pair_regs [quad] = return_regs [*gr];
579 ainfo->pair_regs [quad] = param_regs [*gr];
584 if (*fr >= FLOAT_PARAM_REGS)
585 args [quad] = ARG_CLASS_MEMORY;
587 ainfo->pair_storage [quad] = ArgInDoubleSSEReg;
588 ainfo->pair_regs [quad] = *fr;
592 case ARG_CLASS_MEMORY:
595 g_assert_not_reached ();
599 if ((args [0] == ARG_CLASS_MEMORY) || (args [1] == ARG_CLASS_MEMORY)) {
600 /* Revert possible register assignments */
604 ainfo->offset = *stack_size;
606 *stack_size += ALIGN_TO (info->native_size, 8);
608 *stack_size += nquads * sizeof (gpointer);
609 ainfo->storage = ArgOnStack;
617 * Obtain information about a call according to the calling convention.
618 * For AMD64, see the "System V ABI, x86-64 Architecture Processor Supplement
619 * Draft Version 0.23" document for more information.
622 get_call_info (MonoGenericSharingContext *gsctx, MonoMemPool *mp, MonoMethodSignature *sig, gboolean is_pinvoke)
626 int n = sig->hasthis + sig->param_count;
627 guint32 stack_size = 0;
631 cinfo = mono_mempool_alloc0 (mp, sizeof (CallInfo) + (sizeof (ArgInfo) * n));
633 cinfo = g_malloc0 (sizeof (CallInfo) + (sizeof (ArgInfo) * n));
642 ret_type = mini_type_get_underlying_type (gsctx, sig->ret);
643 switch (ret_type->type) {
644 case MONO_TYPE_BOOLEAN:
655 case MONO_TYPE_FNPTR:
656 case MONO_TYPE_CLASS:
657 case MONO_TYPE_OBJECT:
658 case MONO_TYPE_SZARRAY:
659 case MONO_TYPE_ARRAY:
660 case MONO_TYPE_STRING:
661 cinfo->ret.storage = ArgInIReg;
662 cinfo->ret.reg = AMD64_RAX;
666 cinfo->ret.storage = ArgInIReg;
667 cinfo->ret.reg = AMD64_RAX;
670 cinfo->ret.storage = ArgInFloatSSEReg;
671 cinfo->ret.reg = AMD64_XMM0;
674 cinfo->ret.storage = ArgInDoubleSSEReg;
675 cinfo->ret.reg = AMD64_XMM0;
677 case MONO_TYPE_GENERICINST:
678 if (!mono_type_generic_inst_is_valuetype (sig->ret)) {
679 cinfo->ret.storage = ArgInIReg;
680 cinfo->ret.reg = AMD64_RAX;
684 case MONO_TYPE_VALUETYPE: {
685 guint32 tmp_gr = 0, tmp_fr = 0, tmp_stacksize = 0;
687 add_valuetype (gsctx, sig, &cinfo->ret, sig->ret, TRUE, &tmp_gr, &tmp_fr, &tmp_stacksize);
688 if (cinfo->ret.storage == ArgOnStack) {
689 cinfo->vtype_retaddr = TRUE;
690 /* The caller passes the address where the value is stored */
691 add_general (&gr, &stack_size, &cinfo->ret);
695 case MONO_TYPE_TYPEDBYREF:
696 /* Same as a valuetype with size 24 */
697 add_general (&gr, &stack_size, &cinfo->ret);
703 g_error ("Can't handle as return value 0x%x", sig->ret->type);
709 add_general (&gr, &stack_size, cinfo->args + 0);
711 if (!sig->pinvoke && (sig->call_convention == MONO_CALL_VARARG) && (n == 0)) {
713 fr = FLOAT_PARAM_REGS;
715 /* Emit the signature cookie just before the implicit arguments */
716 add_general (&gr, &stack_size, &cinfo->sig_cookie);
719 for (i = 0; i < sig->param_count; ++i) {
720 ArgInfo *ainfo = &cinfo->args [sig->hasthis + i];
724 /* The float param registers and other param registers must be the same index on Windows x64.*/
731 if (!sig->pinvoke && (sig->call_convention == MONO_CALL_VARARG) && (i == sig->sentinelpos)) {
732 /* We allways pass the sig cookie on the stack for simplicity */
734 * Prevent implicit arguments + the sig cookie from being passed
738 fr = FLOAT_PARAM_REGS;
740 /* Emit the signature cookie just before the implicit arguments */
741 add_general (&gr, &stack_size, &cinfo->sig_cookie);
744 if (sig->params [i]->byref) {
745 add_general (&gr, &stack_size, ainfo);
748 ptype = mini_type_get_underlying_type (gsctx, sig->params [i]);
749 switch (ptype->type) {
750 case MONO_TYPE_BOOLEAN:
753 add_general (&gr, &stack_size, ainfo);
758 add_general (&gr, &stack_size, ainfo);
762 add_general (&gr, &stack_size, ainfo);
767 case MONO_TYPE_FNPTR:
768 case MONO_TYPE_CLASS:
769 case MONO_TYPE_OBJECT:
770 case MONO_TYPE_STRING:
771 case MONO_TYPE_SZARRAY:
772 case MONO_TYPE_ARRAY:
773 add_general (&gr, &stack_size, ainfo);
775 case MONO_TYPE_GENERICINST:
776 if (!mono_type_generic_inst_is_valuetype (ptype)) {
777 add_general (&gr, &stack_size, ainfo);
781 case MONO_TYPE_VALUETYPE:
782 add_valuetype (gsctx, sig, ainfo, sig->params [i], FALSE, &gr, &fr, &stack_size);
784 case MONO_TYPE_TYPEDBYREF:
786 add_valuetype (gsctx, sig, ainfo, sig->params [i], FALSE, &gr, &fr, &stack_size);
788 stack_size += sizeof (MonoTypedRef);
789 ainfo->storage = ArgOnStack;
794 add_general (&gr, &stack_size, ainfo);
797 add_float (&fr, &stack_size, ainfo, FALSE);
800 add_float (&fr, &stack_size, ainfo, TRUE);
803 g_assert_not_reached ();
807 if (!sig->pinvoke && (sig->call_convention == MONO_CALL_VARARG) && (n > 0) && (sig->sentinelpos == sig->param_count)) {
809 fr = FLOAT_PARAM_REGS;
811 /* Emit the signature cookie just before the implicit arguments */
812 add_general (&gr, &stack_size, &cinfo->sig_cookie);
816 // There always is 32 bytes reserved on the stack when calling on Winx64
820 if (stack_size & 0x8) {
821 /* The AMD64 ABI requires each stack frame to be 16 byte aligned */
822 cinfo->need_stack_align = TRUE;
826 cinfo->stack_usage = stack_size;
827 cinfo->reg_usage = gr;
828 cinfo->freg_usage = fr;
833 * mono_arch_get_argument_info:
834 * @csig: a method signature
835 * @param_count: the number of parameters to consider
836 * @arg_info: an array to store the result infos
838 * Gathers information on parameters such as size, alignment and
839 * padding. arg_info should be large enought to hold param_count + 1 entries.
841 * Returns the size of the argument area on the stack.
844 mono_arch_get_argument_info (MonoMethodSignature *csig, int param_count, MonoJitArgumentInfo *arg_info)
847 CallInfo *cinfo = get_call_info (NULL, NULL, csig, FALSE);
848 guint32 args_size = cinfo->stack_usage;
850 /* The arguments are saved to a stack area in mono_arch_instrument_prolog */
852 arg_info [0].offset = 0;
855 for (k = 0; k < param_count; k++) {
856 arg_info [k + 1].offset = ((k + csig->hasthis) * 8);
858 arg_info [k + 1].size = 0;
867 cpuid (int id, int* p_eax, int* p_ebx, int* p_ecx, int* p_edx)
870 __asm__ __volatile__ ("cpuid"
871 : "=a" (*p_eax), "=b" (*p_ebx), "=c" (*p_ecx), "=d" (*p_edx)
885 * Initialize the cpu to execute managed code.
888 mono_arch_cpu_init (void)
893 /* spec compliance requires running with double precision */
894 __asm__ __volatile__ ("fnstcw %0\n": "=m" (fpcw));
895 fpcw &= ~X86_FPCW_PRECC_MASK;
896 fpcw |= X86_FPCW_PREC_DOUBLE;
897 __asm__ __volatile__ ("fldcw %0\n": : "m" (fpcw));
898 __asm__ __volatile__ ("fnstcw %0\n": "=m" (fpcw));
900 /* TODO: This is crashing on Win64 right now.
901 * _control87 (_PC_53, MCW_PC);
907 * Initialize architecture specific code.
910 mono_arch_init (void)
912 InitializeCriticalSection (&mini_arch_mutex);
914 ss_trigger_page = mono_valloc (NULL, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_32BIT);
915 bp_trigger_page = mono_valloc (NULL, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_32BIT);
916 mono_mprotect (bp_trigger_page, mono_pagesize (), 0);
920 * Cleanup architecture specific code.
923 mono_arch_cleanup (void)
925 DeleteCriticalSection (&mini_arch_mutex);
929 * This function returns the optimizations supported on this cpu.
932 mono_arch_cpu_optimizazions (guint32 *exclude_mask)
934 int eax, ebx, ecx, edx;
940 /* Feature Flags function, flags returned in EDX. */
941 if (cpuid (1, &eax, &ebx, &ecx, &edx)) {
942 if (edx & (1 << 15)) {
943 opts |= MONO_OPT_CMOV;
945 opts |= MONO_OPT_FCMOV;
947 *exclude_mask |= MONO_OPT_FCMOV;
949 *exclude_mask |= MONO_OPT_CMOV;
956 * This function test for all SSE functions supported.
958 * Returns a bitmask corresponding to all supported versions.
962 mono_arch_cpu_enumerate_simd_versions (void)
964 int eax, ebx, ecx, edx;
965 guint32 sse_opts = 0;
967 if (cpuid (1, &eax, &ebx, &ecx, &edx)) {
969 sse_opts |= 1 << SIMD_VERSION_SSE1;
971 sse_opts |= 1 << SIMD_VERSION_SSE2;
973 sse_opts |= 1 << SIMD_VERSION_SSE3;
975 sse_opts |= 1 << SIMD_VERSION_SSSE3;
977 sse_opts |= 1 << SIMD_VERSION_SSE41;
979 sse_opts |= 1 << SIMD_VERSION_SSE42;
982 /* Yes, all this needs to be done to check for sse4a.
983 See: "Amd: CPUID Specification"
985 if (cpuid (0x80000000, &eax, &ebx, &ecx, &edx)) {
986 /* eax greater or equal than 0x80000001, ebx = 'htuA', ecx = DMAc', edx = 'itne'*/
987 if ((((unsigned int) eax) >= 0x80000001) && (ebx == 0x68747541) && (ecx == 0x444D4163) && (edx == 0x69746E65)) {
988 cpuid (0x80000001, &eax, &ebx, &ecx, &edx);
990 sse_opts |= 1 << SIMD_VERSION_SSE4a;
998 mono_arch_get_allocatable_int_vars (MonoCompile *cfg)
1003 for (i = 0; i < cfg->num_varinfo; i++) {
1004 MonoInst *ins = cfg->varinfo [i];
1005 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
1008 if (vmv->range.first_use.abs_pos >= vmv->range.last_use.abs_pos)
1011 if ((ins->flags & (MONO_INST_IS_DEAD|MONO_INST_VOLATILE|MONO_INST_INDIRECT)) ||
1012 (ins->opcode != OP_LOCAL && ins->opcode != OP_ARG))
1015 if (mono_is_regsize_var (ins->inst_vtype)) {
1016 g_assert (MONO_VARINFO (cfg, i)->reg == -1);
1017 g_assert (i == vmv->idx);
1018 vars = g_list_prepend (vars, vmv);
1022 vars = mono_varlist_sort (cfg, vars, 0);
1028 * mono_arch_compute_omit_fp:
1030 * Determine whenever the frame pointer can be eliminated.
1033 mono_arch_compute_omit_fp (MonoCompile *cfg)
1035 MonoMethodSignature *sig;
1036 MonoMethodHeader *header;
1040 if (cfg->arch.omit_fp_computed)
1043 header = mono_method_get_header (cfg->method);
1045 sig = mono_method_signature (cfg->method);
1047 if (!cfg->arch.cinfo)
1048 cfg->arch.cinfo = get_call_info (cfg->generic_sharing_context, cfg->mempool, sig, FALSE);
1049 cinfo = cfg->arch.cinfo;
1052 * FIXME: Remove some of the restrictions.
1054 cfg->arch.omit_fp = TRUE;
1055 cfg->arch.omit_fp_computed = TRUE;
1057 if (cfg->disable_omit_fp)
1058 cfg->arch.omit_fp = FALSE;
1060 if (!debug_omit_fp ())
1061 cfg->arch.omit_fp = FALSE;
1063 if (cfg->method->save_lmf)
1064 cfg->arch.omit_fp = FALSE;
1066 if (cfg->flags & MONO_CFG_HAS_ALLOCA)
1067 cfg->arch.omit_fp = FALSE;
1068 if (header->num_clauses)
1069 cfg->arch.omit_fp = FALSE;
1070 if (cfg->param_area)
1071 cfg->arch.omit_fp = FALSE;
1072 if (!sig->pinvoke && (sig->call_convention == MONO_CALL_VARARG))
1073 cfg->arch.omit_fp = FALSE;
1074 if ((mono_jit_trace_calls != NULL && mono_trace_eval (cfg->method)) ||
1075 (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE))
1076 cfg->arch.omit_fp = FALSE;
1077 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
1078 ArgInfo *ainfo = &cinfo->args [i];
1080 if (ainfo->storage == ArgOnStack) {
1082 * The stack offset can only be determined when the frame
1085 cfg->arch.omit_fp = FALSE;
1090 for (i = cfg->locals_start; i < cfg->num_varinfo; i++) {
1091 MonoInst *ins = cfg->varinfo [i];
1094 locals_size += mono_type_size (ins->inst_vtype, &ialign);
1099 mono_arch_get_global_int_regs (MonoCompile *cfg)
1103 mono_arch_compute_omit_fp (cfg);
1105 if (cfg->globalra) {
1106 if (cfg->arch.omit_fp)
1107 regs = g_list_prepend (regs, (gpointer)AMD64_RBP);
1109 regs = g_list_prepend (regs, (gpointer)AMD64_RBX);
1110 regs = g_list_prepend (regs, (gpointer)AMD64_R12);
1111 regs = g_list_prepend (regs, (gpointer)AMD64_R13);
1112 regs = g_list_prepend (regs, (gpointer)AMD64_R14);
1113 regs = g_list_prepend (regs, (gpointer)AMD64_R15);
1115 regs = g_list_prepend (regs, (gpointer)AMD64_R10);
1116 regs = g_list_prepend (regs, (gpointer)AMD64_R9);
1117 regs = g_list_prepend (regs, (gpointer)AMD64_R8);
1118 regs = g_list_prepend (regs, (gpointer)AMD64_RDI);
1119 regs = g_list_prepend (regs, (gpointer)AMD64_RSI);
1120 regs = g_list_prepend (regs, (gpointer)AMD64_RDX);
1121 regs = g_list_prepend (regs, (gpointer)AMD64_RCX);
1122 regs = g_list_prepend (regs, (gpointer)AMD64_RAX);
1124 if (cfg->arch.omit_fp)
1125 regs = g_list_prepend (regs, (gpointer)AMD64_RBP);
1127 /* We use the callee saved registers for global allocation */
1128 regs = g_list_prepend (regs, (gpointer)AMD64_RBX);
1129 regs = g_list_prepend (regs, (gpointer)AMD64_R12);
1130 regs = g_list_prepend (regs, (gpointer)AMD64_R13);
1131 regs = g_list_prepend (regs, (gpointer)AMD64_R14);
1132 regs = g_list_prepend (regs, (gpointer)AMD64_R15);
1134 regs = g_list_prepend (regs, (gpointer)AMD64_RDI);
1135 regs = g_list_prepend (regs, (gpointer)AMD64_RSI);
1143 mono_arch_get_global_fp_regs (MonoCompile *cfg)
1148 /* All XMM registers */
1149 for (i = 0; i < 16; ++i)
1150 regs = g_list_prepend (regs, GINT_TO_POINTER (i));
1156 mono_arch_get_iregs_clobbered_by_call (MonoCallInst *call)
1158 static GList *r = NULL;
1163 regs = g_list_prepend (regs, (gpointer)AMD64_RBP);
1164 regs = g_list_prepend (regs, (gpointer)AMD64_RBX);
1165 regs = g_list_prepend (regs, (gpointer)AMD64_R12);
1166 regs = g_list_prepend (regs, (gpointer)AMD64_R13);
1167 regs = g_list_prepend (regs, (gpointer)AMD64_R14);
1168 regs = g_list_prepend (regs, (gpointer)AMD64_R15);
1170 regs = g_list_prepend (regs, (gpointer)AMD64_R10);
1171 regs = g_list_prepend (regs, (gpointer)AMD64_R9);
1172 regs = g_list_prepend (regs, (gpointer)AMD64_R8);
1173 regs = g_list_prepend (regs, (gpointer)AMD64_RDI);
1174 regs = g_list_prepend (regs, (gpointer)AMD64_RSI);
1175 regs = g_list_prepend (regs, (gpointer)AMD64_RDX);
1176 regs = g_list_prepend (regs, (gpointer)AMD64_RCX);
1177 regs = g_list_prepend (regs, (gpointer)AMD64_RAX);
1179 InterlockedCompareExchangePointer ((gpointer*)&r, regs, NULL);
1186 mono_arch_get_fregs_clobbered_by_call (MonoCallInst *call)
1189 static GList *r = NULL;
1194 for (i = 0; i < AMD64_XMM_NREG; ++i)
1195 regs = g_list_prepend (regs, GINT_TO_POINTER (MONO_MAX_IREGS + i));
1197 InterlockedCompareExchangePointer ((gpointer*)&r, regs, NULL);
1204 * mono_arch_regalloc_cost:
1206 * Return the cost, in number of memory references, of the action of
1207 * allocating the variable VMV into a register during global register
1211 mono_arch_regalloc_cost (MonoCompile *cfg, MonoMethodVar *vmv)
1213 MonoInst *ins = cfg->varinfo [vmv->idx];
1215 if (cfg->method->save_lmf)
1216 /* The register is already saved */
1217 /* substract 1 for the invisible store in the prolog */
1218 return (ins->opcode == OP_ARG) ? 0 : 1;
1221 return (ins->opcode == OP_ARG) ? 1 : 2;
1225 * mono_arch_fill_argument_info:
1227 * Populate cfg->args, cfg->ret and cfg->vret_addr with information about the arguments
1231 mono_arch_fill_argument_info (MonoCompile *cfg)
1233 MonoMethodSignature *sig;
1234 MonoMethodHeader *header;
1239 header = mono_method_get_header (cfg->method);
1241 sig = mono_method_signature (cfg->method);
1243 cinfo = cfg->arch.cinfo;
1246 * Contrary to mono_arch_allocate_vars (), the information should describe
1247 * where the arguments are at the beginning of the method, not where they can be
1248 * accessed during the execution of the method. The later makes no sense for the
1249 * global register allocator, since a variable can be in more than one location.
1251 if (sig->ret->type != MONO_TYPE_VOID) {
1252 switch (cinfo->ret.storage) {
1254 case ArgInFloatSSEReg:
1255 case ArgInDoubleSSEReg:
1256 if ((MONO_TYPE_ISSTRUCT (sig->ret) && !mono_class_from_mono_type (sig->ret)->enumtype) || (sig->ret->type == MONO_TYPE_TYPEDBYREF)) {
1257 cfg->vret_addr->opcode = OP_REGVAR;
1258 cfg->vret_addr->inst_c0 = cinfo->ret.reg;
1261 cfg->ret->opcode = OP_REGVAR;
1262 cfg->ret->inst_c0 = cinfo->ret.reg;
1265 case ArgValuetypeInReg:
1266 cfg->ret->opcode = OP_REGOFFSET;
1267 cfg->ret->inst_basereg = -1;
1268 cfg->ret->inst_offset = -1;
1271 g_assert_not_reached ();
1275 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
1276 ArgInfo *ainfo = &cinfo->args [i];
1279 ins = cfg->args [i];
1281 if (sig->hasthis && (i == 0))
1282 arg_type = &mono_defaults.object_class->byval_arg;
1284 arg_type = sig->params [i - sig->hasthis];
1286 switch (ainfo->storage) {
1288 case ArgInFloatSSEReg:
1289 case ArgInDoubleSSEReg:
1290 ins->opcode = OP_REGVAR;
1291 ins->inst_c0 = ainfo->reg;
1294 ins->opcode = OP_REGOFFSET;
1295 ins->inst_basereg = -1;
1296 ins->inst_offset = -1;
1298 case ArgValuetypeInReg:
1300 ins->opcode = OP_NOP;
1303 g_assert_not_reached ();
1309 mono_arch_allocate_vars (MonoCompile *cfg)
1311 MonoMethodSignature *sig;
1312 MonoMethodHeader *header;
1315 guint32 locals_stack_size, locals_stack_align;
1319 header = mono_method_get_header (cfg->method);
1321 sig = mono_method_signature (cfg->method);
1323 cinfo = cfg->arch.cinfo;
1325 mono_arch_compute_omit_fp (cfg);
1328 * We use the ABI calling conventions for managed code as well.
1329 * Exception: valuetypes are only sometimes passed or returned in registers.
1333 * The stack looks like this:
1334 * <incoming arguments passed on the stack>
1336 * <lmf/caller saved registers>
1339 * <localloc area> -> grows dynamically
1343 if (cfg->arch.omit_fp) {
1344 cfg->flags |= MONO_CFG_HAS_SPILLUP;
1345 cfg->frame_reg = AMD64_RSP;
1348 /* Locals are allocated backwards from %fp */
1349 cfg->frame_reg = AMD64_RBP;
1353 if (cfg->method->save_lmf) {
1354 /* Reserve stack space for saving LMF */
1355 if (cfg->arch.omit_fp) {
1356 cfg->arch.lmf_offset = offset;
1357 offset += sizeof (MonoLMF);
1360 offset += sizeof (MonoLMF);
1361 cfg->arch.lmf_offset = -offset;
1364 if (cfg->arch.omit_fp)
1365 cfg->arch.reg_save_area_offset = offset;
1366 /* Reserve space for caller saved registers */
1367 for (i = 0; i < AMD64_NREG; ++i)
1368 if (AMD64_IS_CALLEE_SAVED_REG (i) && (cfg->used_int_regs & (1 << i))) {
1369 offset += sizeof (gpointer);
1373 if (sig->ret->type != MONO_TYPE_VOID) {
1374 switch (cinfo->ret.storage) {
1376 case ArgInFloatSSEReg:
1377 case ArgInDoubleSSEReg:
1378 if ((MONO_TYPE_ISSTRUCT (sig->ret) && !mono_class_from_mono_type (sig->ret)->enumtype) || (sig->ret->type == MONO_TYPE_TYPEDBYREF)) {
1379 if (cfg->globalra) {
1380 cfg->vret_addr->opcode = OP_REGVAR;
1381 cfg->vret_addr->inst_c0 = cinfo->ret.reg;
1383 /* The register is volatile */
1384 cfg->vret_addr->opcode = OP_REGOFFSET;
1385 cfg->vret_addr->inst_basereg = cfg->frame_reg;
1386 if (cfg->arch.omit_fp) {
1387 cfg->vret_addr->inst_offset = offset;
1391 cfg->vret_addr->inst_offset = -offset;
1393 if (G_UNLIKELY (cfg->verbose_level > 1)) {
1394 printf ("vret_addr =");
1395 mono_print_ins (cfg->vret_addr);
1400 cfg->ret->opcode = OP_REGVAR;
1401 cfg->ret->inst_c0 = cinfo->ret.reg;
1404 case ArgValuetypeInReg:
1405 /* Allocate a local to hold the result, the epilog will copy it to the correct place */
1406 cfg->ret->opcode = OP_REGOFFSET;
1407 cfg->ret->inst_basereg = cfg->frame_reg;
1408 if (cfg->arch.omit_fp) {
1409 cfg->ret->inst_offset = offset;
1413 cfg->ret->inst_offset = - offset;
1417 g_assert_not_reached ();
1420 cfg->ret->dreg = cfg->ret->inst_c0;
1423 /* Allocate locals */
1424 if (!cfg->globalra) {
1425 offsets = mono_allocate_stack_slots_full (cfg, cfg->arch.omit_fp ? FALSE: TRUE, &locals_stack_size, &locals_stack_align);
1426 if (locals_stack_size > MONO_ARCH_MAX_FRAME_SIZE) {
1427 char *mname = mono_method_full_name (cfg->method, TRUE);
1428 cfg->exception_type = MONO_EXCEPTION_INVALID_PROGRAM;
1429 cfg->exception_message = g_strdup_printf ("Method %s stack is too big.", mname);
1434 if (locals_stack_align) {
1435 offset += (locals_stack_align - 1);
1436 offset &= ~(locals_stack_align - 1);
1438 if (cfg->arch.omit_fp) {
1439 cfg->locals_min_stack_offset = offset;
1440 cfg->locals_max_stack_offset = offset + locals_stack_size;
1442 cfg->locals_min_stack_offset = - (offset + locals_stack_size);
1443 cfg->locals_max_stack_offset = - offset;
1446 for (i = cfg->locals_start; i < cfg->num_varinfo; i++) {
1447 if (offsets [i] != -1) {
1448 MonoInst *ins = cfg->varinfo [i];
1449 ins->opcode = OP_REGOFFSET;
1450 ins->inst_basereg = cfg->frame_reg;
1451 if (cfg->arch.omit_fp)
1452 ins->inst_offset = (offset + offsets [i]);
1454 ins->inst_offset = - (offset + offsets [i]);
1455 //printf ("allocated local %d to ", i); mono_print_tree_nl (ins);
1458 offset += locals_stack_size;
1461 if (!sig->pinvoke && (sig->call_convention == MONO_CALL_VARARG)) {
1462 g_assert (!cfg->arch.omit_fp);
1463 g_assert (cinfo->sig_cookie.storage == ArgOnStack);
1464 cfg->sig_cookie = cinfo->sig_cookie.offset + ARGS_OFFSET;
1467 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
1468 ins = cfg->args [i];
1469 if (ins->opcode != OP_REGVAR) {
1470 ArgInfo *ainfo = &cinfo->args [i];
1471 gboolean inreg = TRUE;
1474 if (sig->hasthis && (i == 0))
1475 arg_type = &mono_defaults.object_class->byval_arg;
1477 arg_type = sig->params [i - sig->hasthis];
1479 if (cfg->globalra) {
1480 /* The new allocator needs info about the original locations of the arguments */
1481 switch (ainfo->storage) {
1483 case ArgInFloatSSEReg:
1484 case ArgInDoubleSSEReg:
1485 ins->opcode = OP_REGVAR;
1486 ins->inst_c0 = ainfo->reg;
1489 g_assert (!cfg->arch.omit_fp);
1490 ins->opcode = OP_REGOFFSET;
1491 ins->inst_basereg = cfg->frame_reg;
1492 ins->inst_offset = ainfo->offset + ARGS_OFFSET;
1494 case ArgValuetypeInReg:
1495 ins->opcode = OP_REGOFFSET;
1496 ins->inst_basereg = cfg->frame_reg;
1497 /* These arguments are saved to the stack in the prolog */
1498 offset = ALIGN_TO (offset, sizeof (gpointer));
1499 if (cfg->arch.omit_fp) {
1500 ins->inst_offset = offset;
1501 offset += (ainfo->storage == ArgValuetypeInReg) ? 2 * sizeof (gpointer) : sizeof (gpointer);
1503 offset += (ainfo->storage == ArgValuetypeInReg) ? 2 * sizeof (gpointer) : sizeof (gpointer);
1504 ins->inst_offset = - offset;
1508 g_assert_not_reached ();
1514 /* FIXME: Allocate volatile arguments to registers */
1515 if (ins->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT))
1519 * Under AMD64, all registers used to pass arguments to functions
1520 * are volatile across calls.
1521 * FIXME: Optimize this.
1523 if ((ainfo->storage == ArgInIReg) || (ainfo->storage == ArgInFloatSSEReg) || (ainfo->storage == ArgInDoubleSSEReg) || (ainfo->storage == ArgValuetypeInReg))
1526 ins->opcode = OP_REGOFFSET;
1528 switch (ainfo->storage) {
1530 case ArgInFloatSSEReg:
1531 case ArgInDoubleSSEReg:
1533 ins->opcode = OP_REGVAR;
1534 ins->dreg = ainfo->reg;
1538 g_assert (!cfg->arch.omit_fp);
1539 ins->opcode = OP_REGOFFSET;
1540 ins->inst_basereg = cfg->frame_reg;
1541 ins->inst_offset = ainfo->offset + ARGS_OFFSET;
1543 case ArgValuetypeInReg:
1545 case ArgValuetypeAddrInIReg: {
1547 g_assert (!cfg->arch.omit_fp);
1549 MONO_INST_NEW (cfg, indir, 0);
1550 indir->opcode = OP_REGOFFSET;
1551 if (ainfo->pair_storage [0] == ArgInIReg) {
1552 indir->inst_basereg = cfg->frame_reg;
1553 offset = ALIGN_TO (offset, sizeof (gpointer));
1554 offset += (sizeof (gpointer));
1555 indir->inst_offset = - offset;
1558 indir->inst_basereg = cfg->frame_reg;
1559 indir->inst_offset = ainfo->offset + ARGS_OFFSET;
1562 ins->opcode = OP_VTARG_ADDR;
1563 ins->inst_left = indir;
1571 if (!inreg && (ainfo->storage != ArgOnStack) && (ainfo->storage != ArgValuetypeAddrInIReg)) {
1572 ins->opcode = OP_REGOFFSET;
1573 ins->inst_basereg = cfg->frame_reg;
1574 /* These arguments are saved to the stack in the prolog */
1575 offset = ALIGN_TO (offset, sizeof (gpointer));
1576 if (cfg->arch.omit_fp) {
1577 ins->inst_offset = offset;
1578 offset += (ainfo->storage == ArgValuetypeInReg) ? 2 * sizeof (gpointer) : sizeof (gpointer);
1579 // Arguments are yet supported by the stack map creation code
1580 //cfg->locals_max_stack_offset = MAX (cfg->locals_max_stack_offset, offset);
1582 offset += (ainfo->storage == ArgValuetypeInReg) ? 2 * sizeof (gpointer) : sizeof (gpointer);
1583 ins->inst_offset = - offset;
1584 //cfg->locals_min_stack_offset = MIN (cfg->locals_min_stack_offset, offset);
1590 cfg->stack_offset = offset;
1594 mono_arch_create_vars (MonoCompile *cfg)
1596 MonoMethodSignature *sig;
1599 sig = mono_method_signature (cfg->method);
1601 if (!cfg->arch.cinfo)
1602 cfg->arch.cinfo = get_call_info (cfg->generic_sharing_context, cfg->mempool, sig, FALSE);
1603 cinfo = cfg->arch.cinfo;
1605 if (cinfo->ret.storage == ArgValuetypeInReg)
1606 cfg->ret_var_is_local = TRUE;
1608 if ((cinfo->ret.storage != ArgValuetypeInReg) && MONO_TYPE_ISSTRUCT (sig->ret)) {
1609 cfg->vret_addr = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_ARG);
1610 if (G_UNLIKELY (cfg->verbose_level > 1)) {
1611 printf ("vret_addr = ");
1612 mono_print_ins (cfg->vret_addr);
1616 #ifdef MONO_AMD64_NO_PUSHES
1618 * When this is set, we pass arguments on the stack by moves, and by allocating
1619 * a bigger stack frame, instead of pushes.
1620 * Pushes complicate exception handling because the arguments on the stack have
1621 * to be popped each time a frame is unwound. They also make fp elimination
1623 * FIXME: This doesn't work inside filter/finally clauses, since those execute
1624 * on a new frame which doesn't include a param area.
1626 cfg->arch.no_pushes = TRUE;
1631 add_outarg_reg (MonoCompile *cfg, MonoCallInst *call, ArgStorage storage, int reg, MonoInst *tree)
1637 MONO_INST_NEW (cfg, ins, OP_MOVE);
1638 ins->dreg = mono_alloc_ireg (cfg);
1639 ins->sreg1 = tree->dreg;
1640 MONO_ADD_INS (cfg->cbb, ins);
1641 mono_call_inst_add_outarg_reg (cfg, call, ins->dreg, reg, FALSE);
1643 case ArgInFloatSSEReg:
1644 MONO_INST_NEW (cfg, ins, OP_AMD64_SET_XMMREG_R4);
1645 ins->dreg = mono_alloc_freg (cfg);
1646 ins->sreg1 = tree->dreg;
1647 MONO_ADD_INS (cfg->cbb, ins);
1649 mono_call_inst_add_outarg_reg (cfg, call, ins->dreg, reg, TRUE);
1651 case ArgInDoubleSSEReg:
1652 MONO_INST_NEW (cfg, ins, OP_FMOVE);
1653 ins->dreg = mono_alloc_freg (cfg);
1654 ins->sreg1 = tree->dreg;
1655 MONO_ADD_INS (cfg->cbb, ins);
1657 mono_call_inst_add_outarg_reg (cfg, call, ins->dreg, reg, TRUE);
1661 g_assert_not_reached ();
1666 arg_storage_to_load_membase (ArgStorage storage)
1670 return OP_LOAD_MEMBASE;
1671 case ArgInDoubleSSEReg:
1672 return OP_LOADR8_MEMBASE;
1673 case ArgInFloatSSEReg:
1674 return OP_LOADR4_MEMBASE;
1676 g_assert_not_reached ();
1683 emit_sig_cookie (MonoCompile *cfg, MonoCallInst *call, CallInfo *cinfo)
1686 MonoMethodSignature *tmp_sig;
1689 if (call->tail_call)
1692 /* FIXME: Add support for signature tokens to AOT */
1693 cfg->disable_aot = TRUE;
1695 g_assert (cinfo->sig_cookie.storage == ArgOnStack);
1698 * mono_ArgIterator_Setup assumes the signature cookie is
1699 * passed first and all the arguments which were before it are
1700 * passed on the stack after the signature. So compensate by
1701 * passing a different signature.
1703 tmp_sig = mono_metadata_signature_dup (call->signature);
1704 tmp_sig->param_count -= call->signature->sentinelpos;
1705 tmp_sig->sentinelpos = 0;
1706 memcpy (tmp_sig->params, call->signature->params + call->signature->sentinelpos, tmp_sig->param_count * sizeof (MonoType*));
1708 MONO_INST_NEW (cfg, sig_arg, OP_ICONST);
1709 sig_arg->dreg = mono_alloc_ireg (cfg);
1710 sig_arg->inst_p0 = tmp_sig;
1711 MONO_ADD_INS (cfg->cbb, sig_arg);
1713 if (cfg->arch.no_pushes) {
1714 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, AMD64_RSP, cinfo->sig_cookie.offset, sig_arg->dreg);
1716 MONO_INST_NEW (cfg, arg, OP_X86_PUSH);
1717 arg->sreg1 = sig_arg->dreg;
1718 MONO_ADD_INS (cfg->cbb, arg);
1722 static inline LLVMArgStorage
1723 arg_storage_to_llvm_arg_storage (MonoCompile *cfg, ArgStorage storage)
1727 return LLVMArgInIReg;
1731 g_assert_not_reached ();
1738 mono_arch_get_llvm_call_info (MonoCompile *cfg, MonoMethodSignature *sig)
1744 LLVMCallInfo *linfo;
1746 n = sig->param_count + sig->hasthis;
1748 cinfo = get_call_info (cfg->generic_sharing_context, cfg->mempool, sig, sig->pinvoke);
1750 linfo = mono_mempool_alloc0 (cfg->mempool, sizeof (LLVMCallInfo) + (sizeof (LLVMArgInfo) * n));
1753 * LLVM always uses the native ABI while we use our own ABI, the
1754 * only difference is the handling of vtypes:
1755 * - we only pass/receive them in registers in some cases, and only
1756 * in 1 or 2 integer registers.
1758 if (cinfo->ret.storage == ArgValuetypeInReg) {
1760 cfg->exception_message = g_strdup ("pinvoke + vtypes");
1761 cfg->disable_llvm = TRUE;
1765 linfo->ret.storage = LLVMArgVtypeInReg;
1766 for (j = 0; j < 2; ++j)
1767 linfo->ret.pair_storage [j] = arg_storage_to_llvm_arg_storage (cfg, cinfo->ret.pair_storage [j]);
1770 if (MONO_TYPE_ISSTRUCT (sig->ret) && cinfo->ret.storage == ArgInIReg) {
1771 /* Vtype returned using a hidden argument */
1772 linfo->ret.storage = LLVMArgVtypeRetAddr;
1775 for (i = 0; i < n; ++i) {
1776 ainfo = cinfo->args + i;
1778 linfo->args [i].storage = LLVMArgNone;
1780 switch (ainfo->storage) {
1782 linfo->args [i].storage = LLVMArgInIReg;
1784 case ArgInDoubleSSEReg:
1785 case ArgInFloatSSEReg:
1786 linfo->args [i].storage = LLVMArgInFPReg;
1789 if ((i >= sig->hasthis) && (MONO_TYPE_ISSTRUCT(sig->params [i - sig->hasthis]))) {
1790 linfo->args [i].storage = LLVMArgVtypeByVal;
1792 linfo->args [i].storage = LLVMArgInIReg;
1793 if (!sig->params [i - sig->hasthis]->byref) {
1794 if (sig->params [i - sig->hasthis]->type == MONO_TYPE_R4) {
1795 linfo->args [i].storage = LLVMArgInFPReg;
1796 } else if (sig->params [i - sig->hasthis]->type == MONO_TYPE_R8) {
1797 linfo->args [i].storage = LLVMArgInFPReg;
1802 case ArgValuetypeInReg:
1804 cfg->exception_message = g_strdup ("pinvoke + vtypes");
1805 cfg->disable_llvm = TRUE;
1809 linfo->args [i].storage = LLVMArgVtypeInReg;
1810 for (j = 0; j < 2; ++j)
1811 linfo->args [i].pair_storage [j] = arg_storage_to_llvm_arg_storage (cfg, ainfo->pair_storage [j]);
1814 cfg->exception_message = g_strdup ("ainfo->storage");
1815 cfg->disable_llvm = TRUE;
1825 mono_arch_emit_call (MonoCompile *cfg, MonoCallInst *call)
1828 MonoMethodSignature *sig;
1829 int i, n, stack_size;
1835 sig = call->signature;
1836 n = sig->param_count + sig->hasthis;
1838 cinfo = get_call_info (cfg->generic_sharing_context, cfg->mempool, sig, sig->pinvoke);
1840 if (COMPILE_LLVM (cfg)) {
1841 /* We shouldn't be called in the llvm case */
1842 cfg->disable_llvm = TRUE;
1846 if (cinfo->need_stack_align) {
1847 if (!cfg->arch.no_pushes)
1848 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SUB_IMM, X86_ESP, X86_ESP, 8);
1852 * Emit all arguments which are passed on the stack to prevent register
1853 * allocation problems.
1855 if (cfg->arch.no_pushes) {
1856 for (i = 0; i < n; ++i) {
1858 ainfo = cinfo->args + i;
1860 in = call->args [i];
1862 if (sig->hasthis && i == 0)
1863 t = &mono_defaults.object_class->byval_arg;
1865 t = sig->params [i - sig->hasthis];
1867 if (ainfo->storage == ArgOnStack && !MONO_TYPE_ISSTRUCT (t) && !call->tail_call) {
1869 if (t->type == MONO_TYPE_R4)
1870 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORER4_MEMBASE_REG, AMD64_RSP, ainfo->offset, in->dreg);
1871 else if (t->type == MONO_TYPE_R8)
1872 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORER8_MEMBASE_REG, AMD64_RSP, ainfo->offset, in->dreg);
1874 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, AMD64_RSP, ainfo->offset, in->dreg);
1876 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, AMD64_RSP, ainfo->offset, in->dreg);
1883 * Emit all parameters passed in registers in non-reverse order for better readability
1884 * and to help the optimization in emit_prolog ().
1886 for (i = 0; i < n; ++i) {
1887 ainfo = cinfo->args + i;
1889 in = call->args [i];
1891 if (ainfo->storage == ArgInIReg)
1892 add_outarg_reg (cfg, call, ainfo->storage, ainfo->reg, in);
1895 for (i = n - 1; i >= 0; --i) {
1896 ainfo = cinfo->args + i;
1898 in = call->args [i];
1900 switch (ainfo->storage) {
1904 case ArgInFloatSSEReg:
1905 case ArgInDoubleSSEReg:
1906 add_outarg_reg (cfg, call, ainfo->storage, ainfo->reg, in);
1909 case ArgValuetypeInReg:
1910 case ArgValuetypeAddrInIReg:
1911 if (ainfo->storage == ArgOnStack && call->tail_call) {
1912 MonoInst *call_inst = (MonoInst*)call;
1913 cfg->args [i]->flags |= MONO_INST_VOLATILE;
1914 EMIT_NEW_ARGSTORE (cfg, call_inst, i, in);
1915 } else if ((i >= sig->hasthis) && (MONO_TYPE_ISSTRUCT(sig->params [i - sig->hasthis]))) {
1919 if (sig->params [i - sig->hasthis]->type == MONO_TYPE_TYPEDBYREF) {
1920 size = sizeof (MonoTypedRef);
1921 align = sizeof (gpointer);
1925 size = mono_type_native_stack_size (&in->klass->byval_arg, &align);
1928 * Other backends use mono_type_stack_size (), but that
1929 * aligns the size to 8, which is larger than the size of
1930 * the source, leading to reads of invalid memory if the
1931 * source is at the end of address space.
1933 size = mono_class_value_size (in->klass, &align);
1936 g_assert (in->klass);
1939 MONO_INST_NEW (cfg, arg, OP_OUTARG_VT);
1940 arg->sreg1 = in->dreg;
1941 arg->klass = in->klass;
1942 arg->backend.size = size;
1943 arg->inst_p0 = call;
1944 arg->inst_p1 = mono_mempool_alloc (cfg->mempool, sizeof (ArgInfo));
1945 memcpy (arg->inst_p1, ainfo, sizeof (ArgInfo));
1947 MONO_ADD_INS (cfg->cbb, arg);
1950 if (cfg->arch.no_pushes) {
1953 MONO_INST_NEW (cfg, arg, OP_X86_PUSH);
1954 arg->sreg1 = in->dreg;
1955 if (!sig->params [i - sig->hasthis]->byref) {
1956 if (sig->params [i - sig->hasthis]->type == MONO_TYPE_R4) {
1957 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SUB_IMM, X86_ESP, X86_ESP, 8);
1958 arg->opcode = OP_STORER4_MEMBASE_REG;
1959 arg->inst_destbasereg = X86_ESP;
1960 arg->inst_offset = 0;
1961 } else if (sig->params [i - sig->hasthis]->type == MONO_TYPE_R8) {
1962 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SUB_IMM, X86_ESP, X86_ESP, 8);
1963 arg->opcode = OP_STORER8_MEMBASE_REG;
1964 arg->inst_destbasereg = X86_ESP;
1965 arg->inst_offset = 0;
1968 MONO_ADD_INS (cfg->cbb, arg);
1973 g_assert_not_reached ();
1976 if (!sig->pinvoke && (sig->call_convention == MONO_CALL_VARARG) && (i == sig->sentinelpos))
1977 /* Emit the signature cookie just before the implicit arguments */
1978 emit_sig_cookie (cfg, call, cinfo);
1981 /* Handle the case where there are no implicit arguments */
1982 if (!sig->pinvoke && (sig->call_convention == MONO_CALL_VARARG) && (n == sig->sentinelpos))
1983 emit_sig_cookie (cfg, call, cinfo);
1985 if (sig->ret && MONO_TYPE_ISSTRUCT (sig->ret)) {
1988 if (cinfo->ret.storage == ArgValuetypeInReg) {
1989 if (cinfo->ret.pair_storage [0] == ArgInIReg && cinfo->ret.pair_storage [1] == ArgNone) {
1991 * Tell the JIT to use a more efficient calling convention: call using
1992 * OP_CALL, compute the result location after the call, and save the
1995 call->vret_in_reg = TRUE;
1997 * Nullify the instruction computing the vret addr to enable
1998 * future optimizations.
2001 NULLIFY_INS (call->vret_var);
2003 if (call->tail_call)
2006 * The valuetype is in RAX:RDX after the call, need to be copied to
2007 * the stack. Push the address here, so the call instruction can
2010 if (!cfg->arch.vret_addr_loc) {
2011 cfg->arch.vret_addr_loc = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2012 /* Prevent it from being register allocated or optimized away */
2013 ((MonoInst*)cfg->arch.vret_addr_loc)->flags |= MONO_INST_VOLATILE;
2016 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, ((MonoInst*)cfg->arch.vret_addr_loc)->dreg, call->vret_var->dreg);
2020 MONO_INST_NEW (cfg, vtarg, OP_MOVE);
2021 vtarg->sreg1 = call->vret_var->dreg;
2022 vtarg->dreg = mono_alloc_preg (cfg);
2023 MONO_ADD_INS (cfg->cbb, vtarg);
2025 mono_call_inst_add_outarg_reg (cfg, call, vtarg->dreg, cinfo->ret.reg, FALSE);
2030 if (call->inst.opcode != OP_JMP && OP_TAILCALL != call->inst.opcode) {
2031 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SUB_IMM, X86_ESP, X86_ESP, 0x20);
2035 if (cfg->method->save_lmf) {
2036 MONO_INST_NEW (cfg, arg, OP_AMD64_SAVE_SP_TO_LMF);
2037 MONO_ADD_INS (cfg->cbb, arg);
2040 call->stack_usage = cinfo->stack_usage;
2044 mono_arch_emit_outarg_vt (MonoCompile *cfg, MonoInst *ins, MonoInst *src)
2047 MonoCallInst *call = (MonoCallInst*)ins->inst_p0;
2048 ArgInfo *ainfo = (ArgInfo*)ins->inst_p1;
2049 int size = ins->backend.size;
2051 if (ainfo->storage == ArgValuetypeInReg) {
2055 for (part = 0; part < 2; ++part) {
2056 if (ainfo->pair_storage [part] == ArgNone)
2059 MONO_INST_NEW (cfg, load, arg_storage_to_load_membase (ainfo->pair_storage [part]));
2060 load->inst_basereg = src->dreg;
2061 load->inst_offset = part * sizeof (gpointer);
2063 switch (ainfo->pair_storage [part]) {
2065 load->dreg = mono_alloc_ireg (cfg);
2067 case ArgInDoubleSSEReg:
2068 case ArgInFloatSSEReg:
2069 load->dreg = mono_alloc_freg (cfg);
2072 g_assert_not_reached ();
2074 MONO_ADD_INS (cfg->cbb, load);
2076 add_outarg_reg (cfg, call, ainfo->pair_storage [part], ainfo->pair_regs [part], load);
2078 } else if (ainfo->storage == ArgValuetypeAddrInIReg) {
2079 MonoInst *vtaddr, *load;
2080 vtaddr = mono_compile_create_var (cfg, &ins->klass->byval_arg, OP_LOCAL);
2082 g_assert (!cfg->arch.no_pushes);
2084 MONO_INST_NEW (cfg, load, OP_LDADDR);
2085 load->inst_p0 = vtaddr;
2086 vtaddr->flags |= MONO_INST_INDIRECT;
2087 load->type = STACK_MP;
2088 load->klass = vtaddr->klass;
2089 load->dreg = mono_alloc_ireg (cfg);
2090 MONO_ADD_INS (cfg->cbb, load);
2091 mini_emit_memcpy (cfg, load->dreg, 0, src->dreg, 0, size, 4);
2093 if (ainfo->pair_storage [0] == ArgInIReg) {
2094 MONO_INST_NEW (cfg, arg, OP_X86_LEA_MEMBASE);
2095 arg->dreg = mono_alloc_ireg (cfg);
2096 arg->sreg1 = load->dreg;
2098 MONO_ADD_INS (cfg->cbb, arg);
2099 mono_call_inst_add_outarg_reg (cfg, call, arg->dreg, ainfo->pair_regs [0], FALSE);
2101 MONO_INST_NEW (cfg, arg, OP_X86_PUSH);
2102 arg->sreg1 = load->dreg;
2103 MONO_ADD_INS (cfg->cbb, arg);
2107 if (cfg->arch.no_pushes) {
2108 int dreg = mono_alloc_ireg (cfg);
2110 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, src->dreg, 0);
2111 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, AMD64_RSP, ainfo->offset, dreg);
2113 /* Can't use this for < 8 since it does an 8 byte memory load */
2114 MONO_INST_NEW (cfg, arg, OP_X86_PUSH_MEMBASE);
2115 arg->inst_basereg = src->dreg;
2116 arg->inst_offset = 0;
2117 MONO_ADD_INS (cfg->cbb, arg);
2119 } else if (size <= 40) {
2120 if (cfg->arch.no_pushes) {
2121 mini_emit_memcpy (cfg, AMD64_RSP, ainfo->offset, src->dreg, 0, size, 4);
2123 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SUB_IMM, X86_ESP, X86_ESP, ALIGN_TO (size, 8));
2124 mini_emit_memcpy (cfg, X86_ESP, 0, src->dreg, 0, size, 4);
2127 if (cfg->arch.no_pushes) {
2128 // FIXME: Code growth
2129 mini_emit_memcpy (cfg, AMD64_RSP, ainfo->offset, src->dreg, 0, size, 4);
2131 MONO_INST_NEW (cfg, arg, OP_X86_PUSH_OBJ);
2132 arg->inst_basereg = src->dreg;
2133 arg->inst_offset = 0;
2134 arg->inst_imm = size;
2135 MONO_ADD_INS (cfg->cbb, arg);
2142 mono_arch_emit_setret (MonoCompile *cfg, MonoMethod *method, MonoInst *val)
2144 MonoType *ret = mini_type_get_underlying_type (NULL, mono_method_signature (method)->ret);
2147 if (ret->type == MONO_TYPE_R4) {
2148 if (COMPILE_LLVM (cfg))
2149 MONO_EMIT_NEW_UNALU (cfg, OP_FMOVE, cfg->ret->dreg, val->dreg);
2151 MONO_EMIT_NEW_UNALU (cfg, OP_AMD64_SET_XMMREG_R4, cfg->ret->dreg, val->dreg);
2153 } else if (ret->type == MONO_TYPE_R8) {
2154 MONO_EMIT_NEW_UNALU (cfg, OP_FMOVE, cfg->ret->dreg, val->dreg);
2159 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->ret->dreg, val->dreg);
2162 #define EMIT_COND_BRANCH(ins,cond,sign) \
2163 if (ins->inst_true_bb->native_offset) { \
2164 x86_branch (code, cond, cfg->native_code + ins->inst_true_bb->native_offset, sign); \
2166 mono_add_patch_info (cfg, code - cfg->native_code, MONO_PATCH_INFO_BB, ins->inst_true_bb); \
2167 if ((cfg->opt & MONO_OPT_BRANCH) && \
2168 x86_is_imm8 (ins->inst_true_bb->max_offset - offset)) \
2169 x86_branch8 (code, cond, 0, sign); \
2171 x86_branch32 (code, cond, 0, sign); \
2175 MonoMethodSignature *sig;
2180 mgreg_t regs [PARAM_REGS];
2186 dyn_call_supported (MonoMethodSignature *sig, CallInfo *cinfo)
2194 switch (cinfo->ret.storage) {
2198 case ArgValuetypeInReg: {
2199 ArgInfo *ainfo = &cinfo->ret;
2201 if (ainfo->pair_storage [0] != ArgNone && ainfo->pair_storage [0] != ArgInIReg)
2203 if (ainfo->pair_storage [1] != ArgNone && ainfo->pair_storage [1] != ArgInIReg)
2211 for (i = 0; i < cinfo->nargs; ++i) {
2212 ArgInfo *ainfo = &cinfo->args [i];
2213 switch (ainfo->storage) {
2216 case ArgValuetypeInReg:
2217 if (ainfo->pair_storage [0] != ArgNone && ainfo->pair_storage [0] != ArgInIReg)
2219 if (ainfo->pair_storage [1] != ArgNone && ainfo->pair_storage [1] != ArgInIReg)
2231 * mono_arch_dyn_call_prepare:
2233 * Return a pointer to an arch-specific structure which contains information
2234 * needed by mono_arch_get_dyn_call_args (). Return NULL if OP_DYN_CALL is not
2235 * supported for SIG.
2236 * This function is equivalent to ffi_prep_cif in libffi.
2239 mono_arch_dyn_call_prepare (MonoMethodSignature *sig)
2241 ArchDynCallInfo *info;
2244 cinfo = get_call_info (NULL, NULL, sig, FALSE);
2246 if (!dyn_call_supported (sig, cinfo)) {
2251 info = g_new0 (ArchDynCallInfo, 1);
2252 // FIXME: Preprocess the info to speed up get_dyn_call_args ().
2254 info->cinfo = cinfo;
2256 return (MonoDynCallInfo*)info;
2260 * mono_arch_dyn_call_free:
2262 * Free a MonoDynCallInfo structure.
2265 mono_arch_dyn_call_free (MonoDynCallInfo *info)
2267 ArchDynCallInfo *ainfo = (ArchDynCallInfo*)info;
2269 g_free (ainfo->cinfo);
2274 * mono_arch_get_start_dyn_call:
2276 * Convert the arguments ARGS to a format which can be passed to OP_DYN_CALL, and
2277 * store the result into BUF.
2278 * ARGS should be an array of pointers pointing to the arguments.
2279 * RET should point to a memory buffer large enought to hold the result of the
2281 * This function should be as fast as possible, any work which does not depend
2282 * on the actual values of the arguments should be done in
2283 * mono_arch_dyn_call_prepare ().
2284 * start_dyn_call + OP_DYN_CALL + finish_dyn_call is equivalent to ffi_call in
2288 mono_arch_start_dyn_call (MonoDynCallInfo *info, gpointer **args, guint8 *ret, guint8 *buf, int buf_len)
2290 ArchDynCallInfo *dinfo = (ArchDynCallInfo*)info;
2291 DynCallArgs *p = (DynCallArgs*)buf;
2292 int arg_index, greg, i;
2293 MonoMethodSignature *sig = dinfo->sig;
2295 g_assert (buf_len >= sizeof (DynCallArgs));
2303 if (dinfo->cinfo->vtype_retaddr)
2304 p->regs [greg ++] = (mgreg_t)ret;
2307 p->regs [greg ++] = (mgreg_t)*(args [arg_index ++]);
2310 for (i = 0; i < sig->param_count; i++) {
2311 MonoType *t = mono_type_get_underlying_type (sig->params [i]);
2312 gpointer *arg = args [arg_index ++];
2315 p->regs [greg ++] = (mgreg_t)*(arg);
2320 case MONO_TYPE_STRING:
2321 case MONO_TYPE_CLASS:
2322 case MONO_TYPE_ARRAY:
2323 case MONO_TYPE_SZARRAY:
2324 case MONO_TYPE_OBJECT:
2330 g_assert (dinfo->cinfo->args [i + sig->hasthis].reg == param_regs [greg]);
2331 p->regs [greg ++] = (mgreg_t)*(arg);
2333 case MONO_TYPE_BOOLEAN:
2335 p->regs [greg ++] = *(guint8*)(arg);
2338 p->regs [greg ++] = *(gint8*)(arg);
2341 p->regs [greg ++] = *(gint16*)(arg);
2344 case MONO_TYPE_CHAR:
2345 p->regs [greg ++] = *(guint16*)(arg);
2348 p->regs [greg ++] = *(gint32*)(arg);
2351 p->regs [greg ++] = *(guint32*)(arg);
2353 case MONO_TYPE_GENERICINST:
2354 if (MONO_TYPE_IS_REFERENCE (t)) {
2355 p->regs [greg ++] = (mgreg_t)*(arg);
2360 case MONO_TYPE_VALUETYPE: {
2361 ArgInfo *ainfo = &dinfo->cinfo->args [i + sig->hasthis];
2363 g_assert (ainfo->storage == ArgValuetypeInReg);
2364 if (ainfo->pair_storage [0] != ArgNone) {
2365 g_assert (ainfo->pair_storage [0] == ArgInIReg);
2366 p->regs [greg ++] = ((mgreg_t*)(arg))[0];
2368 if (ainfo->pair_storage [1] != ArgNone) {
2369 g_assert (ainfo->pair_storage [1] == ArgInIReg);
2370 p->regs [greg ++] = ((mgreg_t*)(arg))[1];
2375 g_assert_not_reached ();
2379 g_assert (greg <= PARAM_REGS);
2383 * mono_arch_finish_dyn_call:
2385 * Store the result of a dyn call into the return value buffer passed to
2386 * start_dyn_call ().
2387 * This function should be as fast as possible, any work which does not depend
2388 * on the actual values of the arguments should be done in
2389 * mono_arch_dyn_call_prepare ().
2392 mono_arch_finish_dyn_call (MonoDynCallInfo *info, guint8 *buf)
2394 ArchDynCallInfo *dinfo = (ArchDynCallInfo*)info;
2395 MonoMethodSignature *sig = dinfo->sig;
2396 guint8 *ret = ((DynCallArgs*)buf)->ret;
2397 mgreg_t res = ((DynCallArgs*)buf)->res;
2399 switch (mono_type_get_underlying_type (sig->ret)->type) {
2400 case MONO_TYPE_VOID:
2401 *(gpointer*)ret = NULL;
2403 case MONO_TYPE_STRING:
2404 case MONO_TYPE_CLASS:
2405 case MONO_TYPE_ARRAY:
2406 case MONO_TYPE_SZARRAY:
2407 case MONO_TYPE_OBJECT:
2411 *(gpointer*)ret = (gpointer)res;
2417 case MONO_TYPE_BOOLEAN:
2418 *(guint8*)ret = res;
2421 *(gint16*)ret = res;
2424 case MONO_TYPE_CHAR:
2425 *(guint16*)ret = res;
2428 *(gint32*)ret = res;
2431 *(guint32*)ret = res;
2434 *(gint64*)ret = res;
2437 *(guint64*)ret = res;
2439 case MONO_TYPE_GENERICINST:
2440 if (MONO_TYPE_IS_REFERENCE (sig->ret)) {
2441 *(gpointer*)ret = (gpointer)res;
2446 case MONO_TYPE_VALUETYPE:
2447 if (dinfo->cinfo->vtype_retaddr) {
2450 ArgInfo *ainfo = &dinfo->cinfo->ret;
2452 g_assert (ainfo->storage == ArgValuetypeInReg);
2454 if (ainfo->pair_storage [0] != ArgNone) {
2455 g_assert (ainfo->pair_storage [0] == ArgInIReg);
2456 ((mgreg_t*)ret)[0] = res;
2459 g_assert (ainfo->pair_storage [1] == ArgNone);
2463 g_assert_not_reached ();
2467 /* emit an exception if condition is fail */
2468 #define EMIT_COND_SYSTEM_EXCEPTION(cond,signed,exc_name) \
2470 MonoInst *tins = mono_branch_optimize_exception_target (cfg, bb, exc_name); \
2471 if (tins == NULL) { \
2472 mono_add_patch_info (cfg, code - cfg->native_code, \
2473 MONO_PATCH_INFO_EXC, exc_name); \
2474 x86_branch32 (code, cond, 0, signed); \
2476 EMIT_COND_BRANCH (tins, cond, signed); \
2480 #define EMIT_FPCOMPARE(code) do { \
2481 amd64_fcompp (code); \
2482 amd64_fnstsw (code); \
2485 #define EMIT_SSE2_FPFUNC(code, op, dreg, sreg1) do { \
2486 amd64_movsd_membase_reg (code, AMD64_RSP, -8, (sreg1)); \
2487 amd64_fld_membase (code, AMD64_RSP, -8, TRUE); \
2488 amd64_ ##op (code); \
2489 amd64_fst_membase (code, AMD64_RSP, -8, TRUE, TRUE); \
2490 amd64_movsd_reg_membase (code, (dreg), AMD64_RSP, -8); \
2494 emit_call_body (MonoCompile *cfg, guint8 *code, guint32 patch_type, gconstpointer data)
2496 gboolean no_patch = FALSE;
2499 * FIXME: Add support for thunks
2502 gboolean near_call = FALSE;
2505 * Indirect calls are expensive so try to make a near call if possible.
2506 * The caller memory is allocated by the code manager so it is
2507 * guaranteed to be at a 32 bit offset.
2510 if (patch_type != MONO_PATCH_INFO_ABS) {
2511 /* The target is in memory allocated using the code manager */
2514 if ((patch_type == MONO_PATCH_INFO_METHOD) || (patch_type == MONO_PATCH_INFO_METHOD_JUMP)) {
2515 if (((MonoMethod*)data)->klass->image->aot_module)
2516 /* The callee might be an AOT method */
2518 if (((MonoMethod*)data)->dynamic)
2519 /* The target is in malloc-ed memory */
2523 if (patch_type == MONO_PATCH_INFO_INTERNAL_METHOD) {
2525 * The call might go directly to a native function without
2528 MonoJitICallInfo *mi = mono_find_jit_icall_by_name (data);
2530 gconstpointer target = mono_icall_get_wrapper (mi);
2531 if ((((guint64)target) >> 32) != 0)
2537 if (cfg->abs_patches && g_hash_table_lookup (cfg->abs_patches, data)) {
2539 * This is not really an optimization, but required because the
2540 * generic class init trampolines use R11 to pass the vtable.
2544 MonoJitICallInfo *info = mono_find_jit_icall_by_addr (data);
2546 if ((cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) &&
2547 strstr (cfg->method->name, info->name)) {
2548 /* A call to the wrapped function */
2549 if ((((guint64)data) >> 32) == 0)
2553 else if (info->func == info->wrapper) {
2555 if ((((guint64)info->func) >> 32) == 0)
2559 /* See the comment in mono_codegen () */
2560 if ((info->name [0] != 'v') || (strstr (info->name, "ves_array_new_va_") == NULL && strstr (info->name, "ves_array_element_address_") == NULL))
2564 else if ((((guint64)data) >> 32) == 0) {
2571 if (cfg->method->dynamic)
2572 /* These methods are allocated using malloc */
2575 if (cfg->compile_aot) {
2580 #ifdef MONO_ARCH_NOMAP32BIT
2584 /* The 64bit XEN kernel does not honour the MAP_32BIT flag. (#522894) */
2585 if (optimize_for_xen)
2590 * Align the call displacement to an address divisible by 4 so it does
2591 * not span cache lines. This is required for code patching to work on SMP
2594 if (!no_patch && ((guint32)(code + 1 - cfg->native_code) % 4) != 0)
2595 amd64_padding (code, 4 - ((guint32)(code + 1 - cfg->native_code) % 4));
2596 mono_add_patch_info (cfg, code - cfg->native_code, patch_type, data);
2597 amd64_call_code (code, 0);
2600 mono_add_patch_info (cfg, code - cfg->native_code, patch_type, data);
2601 amd64_set_reg_template (code, GP_SCRATCH_REG);
2602 amd64_call_reg (code, GP_SCRATCH_REG);
2609 static inline guint8*
2610 emit_call (MonoCompile *cfg, guint8 *code, guint32 patch_type, gconstpointer data, gboolean win64_adjust_stack)
2613 if (win64_adjust_stack)
2614 amd64_alu_reg_imm (code, X86_SUB, AMD64_RSP, 32);
2616 code = emit_call_body (cfg, code, patch_type, data);
2618 if (win64_adjust_stack)
2619 amd64_alu_reg_imm (code, X86_ADD, AMD64_RSP, 32);
2626 store_membase_imm_to_store_membase_reg (int opcode)
2629 case OP_STORE_MEMBASE_IMM:
2630 return OP_STORE_MEMBASE_REG;
2631 case OP_STOREI4_MEMBASE_IMM:
2632 return OP_STOREI4_MEMBASE_REG;
2633 case OP_STOREI8_MEMBASE_IMM:
2634 return OP_STOREI8_MEMBASE_REG;
2640 #define INST_IGNORES_CFLAGS(opcode) (!(((opcode) == OP_ADC) || ((opcode) == OP_ADC_IMM) || ((opcode) == OP_IADC) || ((opcode) == OP_IADC_IMM) || ((opcode) == OP_SBB) || ((opcode) == OP_SBB_IMM) || ((opcode) == OP_ISBB) || ((opcode) == OP_ISBB_IMM)))
2643 * mono_arch_peephole_pass_1:
2645 * Perform peephole opts which should/can be performed before local regalloc
2648 mono_arch_peephole_pass_1 (MonoCompile *cfg, MonoBasicBlock *bb)
2652 MONO_BB_FOR_EACH_INS_SAFE (bb, n, ins) {
2653 MonoInst *last_ins = ins->prev;
2655 switch (ins->opcode) {
2659 if ((ins->sreg1 < MONO_MAX_IREGS) && (ins->dreg >= MONO_MAX_IREGS) && (ins->inst_imm > 0)) {
2661 * X86_LEA is like ADD, but doesn't have the
2662 * sreg1==dreg restriction. inst_imm > 0 is needed since LEA sign-extends
2663 * its operand to 64 bit.
2665 ins->opcode = OP_X86_LEA_MEMBASE;
2666 ins->inst_basereg = ins->sreg1;
2671 if ((ins->sreg1 == ins->sreg2) && (ins->sreg1 == ins->dreg)) {
2675 * Replace STORE_MEMBASE_IMM 0 with STORE_MEMBASE_REG since
2676 * the latter has length 2-3 instead of 6 (reverse constant
2677 * propagation). These instruction sequences are very common
2678 * in the initlocals bblock.
2680 for (ins2 = ins->next; ins2; ins2 = ins2->next) {
2681 if (((ins2->opcode == OP_STORE_MEMBASE_IMM) || (ins2->opcode == OP_STOREI4_MEMBASE_IMM) || (ins2->opcode == OP_STOREI8_MEMBASE_IMM) || (ins2->opcode == OP_STORE_MEMBASE_IMM)) && (ins2->inst_imm == 0)) {
2682 ins2->opcode = store_membase_imm_to_store_membase_reg (ins2->opcode);
2683 ins2->sreg1 = ins->dreg;
2684 } else if ((ins2->opcode == OP_STOREI1_MEMBASE_IMM) || (ins2->opcode == OP_STOREI2_MEMBASE_IMM) || (ins2->opcode == OP_STOREI8_MEMBASE_REG) || (ins2->opcode == OP_STORE_MEMBASE_REG)) {
2686 } else if (((ins2->opcode == OP_ICONST) || (ins2->opcode == OP_I8CONST)) && (ins2->dreg == ins->dreg) && (ins2->inst_c0 == 0)) {
2695 case OP_COMPARE_IMM:
2696 case OP_LCOMPARE_IMM:
2697 /* OP_COMPARE_IMM (reg, 0)
2699 * OP_AMD64_TEST_NULL (reg)
2702 ins->opcode = OP_AMD64_TEST_NULL;
2704 case OP_ICOMPARE_IMM:
2706 ins->opcode = OP_X86_TEST_NULL;
2708 case OP_AMD64_ICOMPARE_MEMBASE_IMM:
2710 * OP_STORE_MEMBASE_REG reg, offset(basereg)
2711 * OP_X86_COMPARE_MEMBASE_IMM offset(basereg), imm
2713 * OP_STORE_MEMBASE_REG reg, offset(basereg)
2714 * OP_COMPARE_IMM reg, imm
2716 * Note: if imm = 0 then OP_COMPARE_IMM replaced with OP_X86_TEST_NULL
2718 if (last_ins && (last_ins->opcode == OP_STOREI4_MEMBASE_REG) &&
2719 ins->inst_basereg == last_ins->inst_destbasereg &&
2720 ins->inst_offset == last_ins->inst_offset) {
2721 ins->opcode = OP_ICOMPARE_IMM;
2722 ins->sreg1 = last_ins->sreg1;
2724 /* check if we can remove cmp reg,0 with test null */
2726 ins->opcode = OP_X86_TEST_NULL;
2732 mono_peephole_ins (bb, ins);
2737 mono_arch_peephole_pass_2 (MonoCompile *cfg, MonoBasicBlock *bb)
2741 MONO_BB_FOR_EACH_INS_SAFE (bb, n, ins) {
2742 switch (ins->opcode) {
2745 /* reg = 0 -> XOR (reg, reg) */
2746 /* XOR sets cflags on x86, so we cant do it always */
2747 if (ins->inst_c0 == 0 && (!ins->next || (ins->next && INST_IGNORES_CFLAGS (ins->next->opcode)))) {
2748 ins->opcode = OP_LXOR;
2749 ins->sreg1 = ins->dreg;
2750 ins->sreg2 = ins->dreg;
2758 * Use IXOR to avoid a rex prefix if possible. The cpu will sign extend the
2759 * 0 result into 64 bits.
2761 if ((ins->sreg1 == ins->sreg2) && (ins->sreg1 == ins->dreg)) {
2762 ins->opcode = OP_IXOR;
2766 if ((ins->sreg1 == ins->sreg2) && (ins->sreg1 == ins->dreg)) {
2770 * Replace STORE_MEMBASE_IMM 0 with STORE_MEMBASE_REG since
2771 * the latter has length 2-3 instead of 6 (reverse constant
2772 * propagation). These instruction sequences are very common
2773 * in the initlocals bblock.
2775 for (ins2 = ins->next; ins2; ins2 = ins2->next) {
2776 if (((ins2->opcode == OP_STORE_MEMBASE_IMM) || (ins2->opcode == OP_STOREI4_MEMBASE_IMM) || (ins2->opcode == OP_STOREI8_MEMBASE_IMM) || (ins2->opcode == OP_STORE_MEMBASE_IMM)) && (ins2->inst_imm == 0)) {
2777 ins2->opcode = store_membase_imm_to_store_membase_reg (ins2->opcode);
2778 ins2->sreg1 = ins->dreg;
2779 } else if ((ins2->opcode == OP_STOREI1_MEMBASE_IMM) || (ins2->opcode == OP_STOREI2_MEMBASE_IMM) || (ins2->opcode == OP_STOREI4_MEMBASE_REG) || (ins2->opcode == OP_STOREI8_MEMBASE_REG) || (ins2->opcode == OP_STORE_MEMBASE_REG)) {
2781 } else if (((ins2->opcode == OP_ICONST) || (ins2->opcode == OP_I8CONST)) && (ins2->dreg == ins->dreg) && (ins2->inst_c0 == 0)) {
2791 if ((ins->inst_imm == 1) && (ins->dreg == ins->sreg1))
2792 ins->opcode = OP_X86_INC_REG;
2795 if ((ins->inst_imm == 1) && (ins->dreg == ins->sreg1))
2796 ins->opcode = OP_X86_DEC_REG;
2800 mono_peephole_ins (bb, ins);
2804 #define NEW_INS(cfg,ins,dest,op) do { \
2805 MONO_INST_NEW ((cfg), (dest), (op)); \
2806 (dest)->cil_code = (ins)->cil_code; \
2807 mono_bblock_insert_before_ins (bb, ins, (dest)); \
2811 * mono_arch_lowering_pass:
2813 * Converts complex opcodes into simpler ones so that each IR instruction
2814 * corresponds to one machine instruction.
2817 mono_arch_lowering_pass (MonoCompile *cfg, MonoBasicBlock *bb)
2819 MonoInst *ins, *n, *temp;
2822 * FIXME: Need to add more instructions, but the current machine
2823 * description can't model some parts of the composite instructions like
2826 MONO_BB_FOR_EACH_INS_SAFE (bb, n, ins) {
2827 switch (ins->opcode) {
2831 case OP_IDIV_UN_IMM:
2832 case OP_IREM_UN_IMM:
2833 mono_decompose_op_imm (cfg, bb, ins);
2836 /* Keep the opcode if we can implement it efficiently */
2837 if (!((ins->inst_imm > 0) && (mono_is_power_of_two (ins->inst_imm) != -1)))
2838 mono_decompose_op_imm (cfg, bb, ins);
2840 case OP_COMPARE_IMM:
2841 case OP_LCOMPARE_IMM:
2842 if (!amd64_is_imm32 (ins->inst_imm)) {
2843 NEW_INS (cfg, ins, temp, OP_I8CONST);
2844 temp->inst_c0 = ins->inst_imm;
2845 temp->dreg = mono_alloc_ireg (cfg);
2846 ins->opcode = OP_COMPARE;
2847 ins->sreg2 = temp->dreg;
2850 case OP_LOAD_MEMBASE:
2851 case OP_LOADI8_MEMBASE:
2852 if (!amd64_is_imm32 (ins->inst_offset)) {
2853 NEW_INS (cfg, ins, temp, OP_I8CONST);
2854 temp->inst_c0 = ins->inst_offset;
2855 temp->dreg = mono_alloc_ireg (cfg);
2856 ins->opcode = OP_AMD64_LOADI8_MEMINDEX;
2857 ins->inst_indexreg = temp->dreg;
2860 case OP_STORE_MEMBASE_IMM:
2861 case OP_STOREI8_MEMBASE_IMM:
2862 if (!amd64_is_imm32 (ins->inst_imm)) {
2863 NEW_INS (cfg, ins, temp, OP_I8CONST);
2864 temp->inst_c0 = ins->inst_imm;
2865 temp->dreg = mono_alloc_ireg (cfg);
2866 ins->opcode = OP_STOREI8_MEMBASE_REG;
2867 ins->sreg1 = temp->dreg;
2870 #ifdef MONO_ARCH_SIMD_INTRINSICS
2871 case OP_EXPAND_I1: {
2872 int temp_reg1 = mono_alloc_ireg (cfg);
2873 int temp_reg2 = mono_alloc_ireg (cfg);
2874 int original_reg = ins->sreg1;
2876 NEW_INS (cfg, ins, temp, OP_ICONV_TO_U1);
2877 temp->sreg1 = original_reg;
2878 temp->dreg = temp_reg1;
2880 NEW_INS (cfg, ins, temp, OP_SHL_IMM);
2881 temp->sreg1 = temp_reg1;
2882 temp->dreg = temp_reg2;
2885 NEW_INS (cfg, ins, temp, OP_LOR);
2886 temp->sreg1 = temp->dreg = temp_reg2;
2887 temp->sreg2 = temp_reg1;
2889 ins->opcode = OP_EXPAND_I2;
2890 ins->sreg1 = temp_reg2;
2899 bb->max_vreg = cfg->next_vreg;
2903 branch_cc_table [] = {
2904 X86_CC_EQ, X86_CC_GE, X86_CC_GT, X86_CC_LE, X86_CC_LT,
2905 X86_CC_NE, X86_CC_GE, X86_CC_GT, X86_CC_LE, X86_CC_LT,
2906 X86_CC_O, X86_CC_NO, X86_CC_C, X86_CC_NC
2909 /* Maps CMP_... constants to X86_CC_... constants */
2912 X86_CC_EQ, X86_CC_NE, X86_CC_LE, X86_CC_GE, X86_CC_LT, X86_CC_GT,
2913 X86_CC_LE, X86_CC_GE, X86_CC_LT, X86_CC_GT
2917 cc_signed_table [] = {
2918 TRUE, TRUE, TRUE, TRUE, TRUE, TRUE,
2919 FALSE, FALSE, FALSE, FALSE
2922 /*#include "cprop.c"*/
2924 static unsigned char*
2925 emit_float_to_int (MonoCompile *cfg, guchar *code, int dreg, int sreg, int size, gboolean is_signed)
2927 amd64_sse_cvttsd2si_reg_reg (code, dreg, sreg);
2930 amd64_widen_reg (code, dreg, dreg, is_signed, FALSE);
2932 amd64_widen_reg (code, dreg, dreg, is_signed, TRUE);
2936 static unsigned char*
2937 mono_emit_stack_alloc (MonoCompile *cfg, guchar *code, MonoInst* tree)
2939 int sreg = tree->sreg1;
2940 int need_touch = FALSE;
2942 #if defined(HOST_WIN32) || defined(MONO_ARCH_SIGSEGV_ON_ALTSTACK)
2943 if (!tree->flags & MONO_INST_INIT)
2952 * If requested stack size is larger than one page,
2953 * perform stack-touch operation
2956 * Generate stack probe code.
2957 * Under Windows, it is necessary to allocate one page at a time,
2958 * "touching" stack after each successful sub-allocation. This is
2959 * because of the way stack growth is implemented - there is a
2960 * guard page before the lowest stack page that is currently commited.
2961 * Stack normally grows sequentially so OS traps access to the
2962 * guard page and commits more pages when needed.
2964 amd64_test_reg_imm (code, sreg, ~0xFFF);
2965 br[0] = code; x86_branch8 (code, X86_CC_Z, 0, FALSE);
2967 br[2] = code; /* loop */
2968 amd64_alu_reg_imm (code, X86_SUB, AMD64_RSP, 0x1000);
2969 amd64_test_membase_reg (code, AMD64_RSP, 0, AMD64_RSP);
2970 amd64_alu_reg_imm (code, X86_SUB, sreg, 0x1000);
2971 amd64_alu_reg_imm (code, X86_CMP, sreg, 0x1000);
2972 br[3] = code; x86_branch8 (code, X86_CC_AE, 0, FALSE);
2973 amd64_patch (br[3], br[2]);
2974 amd64_test_reg_reg (code, sreg, sreg);
2975 br[4] = code; x86_branch8 (code, X86_CC_Z, 0, FALSE);
2976 amd64_alu_reg_reg (code, X86_SUB, AMD64_RSP, sreg);
2978 br[1] = code; x86_jump8 (code, 0);
2980 amd64_patch (br[0], code);
2981 amd64_alu_reg_reg (code, X86_SUB, AMD64_RSP, sreg);
2982 amd64_patch (br[1], code);
2983 amd64_patch (br[4], code);
2986 amd64_alu_reg_reg (code, X86_SUB, AMD64_RSP, tree->sreg1);
2988 if (tree->flags & MONO_INST_INIT) {
2990 if (tree->dreg != AMD64_RAX && sreg != AMD64_RAX) {
2991 amd64_push_reg (code, AMD64_RAX);
2994 if (tree->dreg != AMD64_RCX && sreg != AMD64_RCX) {
2995 amd64_push_reg (code, AMD64_RCX);
2998 if (tree->dreg != AMD64_RDI && sreg != AMD64_RDI) {
2999 amd64_push_reg (code, AMD64_RDI);
3003 amd64_shift_reg_imm (code, X86_SHR, sreg, 3);
3004 if (sreg != AMD64_RCX)
3005 amd64_mov_reg_reg (code, AMD64_RCX, sreg, 8);
3006 amd64_alu_reg_reg (code, X86_XOR, AMD64_RAX, AMD64_RAX);
3008 amd64_lea_membase (code, AMD64_RDI, AMD64_RSP, offset);
3009 if (cfg->param_area && cfg->arch.no_pushes)
3010 amd64_alu_reg_imm (code, X86_ADD, AMD64_RDI, cfg->param_area);
3012 amd64_prefix (code, X86_REP_PREFIX);
3015 if (tree->dreg != AMD64_RDI && sreg != AMD64_RDI)
3016 amd64_pop_reg (code, AMD64_RDI);
3017 if (tree->dreg != AMD64_RCX && sreg != AMD64_RCX)
3018 amd64_pop_reg (code, AMD64_RCX);
3019 if (tree->dreg != AMD64_RAX && sreg != AMD64_RAX)
3020 amd64_pop_reg (code, AMD64_RAX);
3026 emit_move_return_value (MonoCompile *cfg, MonoInst *ins, guint8 *code)
3031 /* Move return value to the target register */
3032 /* FIXME: do this in the local reg allocator */
3033 switch (ins->opcode) {
3036 case OP_CALL_MEMBASE:
3039 case OP_LCALL_MEMBASE:
3040 g_assert (ins->dreg == AMD64_RAX);
3044 case OP_FCALL_MEMBASE:
3045 if (((MonoCallInst*)ins)->signature->ret->type == MONO_TYPE_R4) {
3046 amd64_sse_cvtss2sd_reg_reg (code, ins->dreg, AMD64_XMM0);
3049 if (ins->dreg != AMD64_XMM0)
3050 amd64_sse_movsd_reg_reg (code, ins->dreg, AMD64_XMM0);
3055 case OP_VCALL_MEMBASE:
3058 case OP_VCALL2_MEMBASE:
3059 cinfo = get_call_info (cfg->generic_sharing_context, cfg->mempool, ((MonoCallInst*)ins)->signature, FALSE);
3060 if (cinfo->ret.storage == ArgValuetypeInReg) {
3061 MonoInst *loc = cfg->arch.vret_addr_loc;
3063 /* Load the destination address */
3064 g_assert (loc->opcode == OP_REGOFFSET);
3065 amd64_mov_reg_membase (code, AMD64_RCX, loc->inst_basereg, loc->inst_offset, 8);
3067 for (quad = 0; quad < 2; quad ++) {
3068 switch (cinfo->ret.pair_storage [quad]) {
3070 amd64_mov_membase_reg (code, AMD64_RCX, (quad * 8), cinfo->ret.pair_regs [quad], 8);
3072 case ArgInFloatSSEReg:
3073 amd64_movss_membase_reg (code, AMD64_RCX, (quad * 8), cinfo->ret.pair_regs [quad]);
3075 case ArgInDoubleSSEReg:
3076 amd64_movsd_membase_reg (code, AMD64_RCX, (quad * 8), cinfo->ret.pair_regs [quad]);
3092 * mono_amd64_emit_tls_get:
3093 * @code: buffer to store code to
3094 * @dreg: hard register where to place the result
3095 * @tls_offset: offset info
3097 * mono_amd64_emit_tls_get emits in @code the native code that puts in
3098 * the dreg register the item in the thread local storage identified
3101 * Returns: a pointer to the end of the stored code
3104 mono_amd64_emit_tls_get (guint8* code, int dreg, int tls_offset)
3107 g_assert (tls_offset < 64);
3108 x86_prefix (code, X86_GS_PREFIX);
3109 amd64_mov_reg_mem (code, dreg, (tls_offset * 8) + 0x1480, 8);
3111 if (optimize_for_xen) {
3112 x86_prefix (code, X86_FS_PREFIX);
3113 amd64_mov_reg_mem (code, dreg, 0, 8);
3114 amd64_mov_reg_membase (code, dreg, dreg, tls_offset, 8);
3116 x86_prefix (code, X86_FS_PREFIX);
3117 amd64_mov_reg_mem (code, dreg, tls_offset, 8);
3123 #define REAL_PRINT_REG(text,reg) \
3124 mono_assert (reg >= 0); \
3125 amd64_push_reg (code, AMD64_RAX); \
3126 amd64_push_reg (code, AMD64_RDX); \
3127 amd64_push_reg (code, AMD64_RCX); \
3128 amd64_push_reg (code, reg); \
3129 amd64_push_imm (code, reg); \
3130 amd64_push_imm (code, text " %d %p\n"); \
3131 amd64_mov_reg_imm (code, AMD64_RAX, printf); \
3132 amd64_call_reg (code, AMD64_RAX); \
3133 amd64_alu_reg_imm (code, X86_ADD, AMD64_RSP, 3*4); \
3134 amd64_pop_reg (code, AMD64_RCX); \
3135 amd64_pop_reg (code, AMD64_RDX); \
3136 amd64_pop_reg (code, AMD64_RAX);
3138 /* benchmark and set based on cpu */
3139 #define LOOP_ALIGNMENT 8
3140 #define bb_is_loop_start(bb) ((bb)->loop_body_start && (bb)->nesting)
3145 mono_arch_output_basic_block (MonoCompile *cfg, MonoBasicBlock *bb)
3150 guint8 *code = cfg->native_code + cfg->code_len;
3151 MonoInst *last_ins = NULL;
3152 guint last_offset = 0;
3155 /* Fix max_offset estimate for each successor bb */
3156 if (cfg->opt & MONO_OPT_BRANCH) {
3157 int current_offset = cfg->code_len;
3158 MonoBasicBlock *current_bb;
3159 for (current_bb = bb; current_bb != NULL; current_bb = current_bb->next_bb) {
3160 current_bb->max_offset = current_offset;
3161 current_offset += current_bb->max_length;
3165 if (cfg->opt & MONO_OPT_LOOP) {
3166 int pad, align = LOOP_ALIGNMENT;
3167 /* set alignment depending on cpu */
3168 if (bb_is_loop_start (bb) && (pad = (cfg->code_len & (align - 1)))) {
3170 /*g_print ("adding %d pad at %x to loop in %s\n", pad, cfg->code_len, cfg->method->name);*/
3171 amd64_padding (code, pad);
3172 cfg->code_len += pad;
3173 bb->native_offset = cfg->code_len;
3177 if (cfg->verbose_level > 2)
3178 g_print ("Basic block %d starting at offset 0x%x\n", bb->block_num, bb->native_offset);
3180 if (cfg->prof_options & MONO_PROFILE_COVERAGE) {
3181 MonoProfileCoverageInfo *cov = cfg->coverage_info;
3182 g_assert (!cfg->compile_aot);
3184 cov->data [bb->dfn].cil_code = bb->cil_code;
3185 amd64_mov_reg_imm (code, AMD64_R11, (guint64)&cov->data [bb->dfn].count);
3186 /* this is not thread save, but good enough */
3187 amd64_inc_membase (code, AMD64_R11, 0);
3190 offset = code - cfg->native_code;
3192 mono_debug_open_block (cfg, bb, offset);
3194 if (mono_break_at_bb_method && mono_method_desc_full_match (mono_break_at_bb_method, cfg->method) && bb->block_num == mono_break_at_bb_bb_num)
3195 x86_breakpoint (code);
3197 MONO_BB_FOR_EACH_INS (bb, ins) {
3198 offset = code - cfg->native_code;
3200 max_len = ((guint8 *)ins_get_spec (ins->opcode))[MONO_INST_LEN];
3202 if (G_UNLIKELY (offset > (cfg->code_size - max_len - 16))) {
3203 cfg->code_size *= 2;
3204 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
3205 code = cfg->native_code + offset;
3206 mono_jit_stats.code_reallocs++;
3209 if (cfg->debug_info)
3210 mono_debug_record_line_number (cfg, ins, offset);
3212 switch (ins->opcode) {
3214 amd64_mul_reg (code, ins->sreg2, TRUE);
3217 amd64_mul_reg (code, ins->sreg2, FALSE);
3219 case OP_X86_SETEQ_MEMBASE:
3220 amd64_set_membase (code, X86_CC_EQ, ins->inst_basereg, ins->inst_offset, TRUE);
3222 case OP_STOREI1_MEMBASE_IMM:
3223 amd64_mov_membase_imm (code, ins->inst_destbasereg, ins->inst_offset, ins->inst_imm, 1);
3225 case OP_STOREI2_MEMBASE_IMM:
3226 amd64_mov_membase_imm (code, ins->inst_destbasereg, ins->inst_offset, ins->inst_imm, 2);
3228 case OP_STOREI4_MEMBASE_IMM:
3229 amd64_mov_membase_imm (code, ins->inst_destbasereg, ins->inst_offset, ins->inst_imm, 4);
3231 case OP_STOREI1_MEMBASE_REG:
3232 amd64_mov_membase_reg (code, ins->inst_destbasereg, ins->inst_offset, ins->sreg1, 1);
3234 case OP_STOREI2_MEMBASE_REG:
3235 amd64_mov_membase_reg (code, ins->inst_destbasereg, ins->inst_offset, ins->sreg1, 2);
3237 case OP_STORE_MEMBASE_REG:
3238 case OP_STOREI8_MEMBASE_REG:
3239 amd64_mov_membase_reg (code, ins->inst_destbasereg, ins->inst_offset, ins->sreg1, 8);
3241 case OP_STOREI4_MEMBASE_REG:
3242 amd64_mov_membase_reg (code, ins->inst_destbasereg, ins->inst_offset, ins->sreg1, 4);
3244 case OP_STORE_MEMBASE_IMM:
3245 case OP_STOREI8_MEMBASE_IMM:
3246 g_assert (amd64_is_imm32 (ins->inst_imm));
3247 amd64_mov_membase_imm (code, ins->inst_destbasereg, ins->inst_offset, ins->inst_imm, 8);
3251 // FIXME: Decompose this earlier
3252 if (amd64_is_imm32 (ins->inst_imm))
3253 amd64_mov_reg_mem (code, ins->dreg, ins->inst_imm, sizeof (gpointer));
3255 amd64_mov_reg_imm (code, ins->dreg, ins->inst_imm);
3256 amd64_mov_reg_membase (code, ins->dreg, ins->dreg, 0, 8);
3260 amd64_mov_reg_imm (code, ins->dreg, ins->inst_imm);
3261 amd64_movsxd_reg_membase (code, ins->dreg, ins->dreg, 0);
3264 // FIXME: Decompose this earlier
3265 if (amd64_is_imm32 (ins->inst_imm))
3266 amd64_mov_reg_mem (code, ins->dreg, ins->inst_imm, 4);
3268 amd64_mov_reg_imm (code, ins->dreg, ins->inst_imm);
3269 amd64_mov_reg_membase (code, ins->dreg, ins->dreg, 0, 4);
3273 amd64_mov_reg_imm (code, ins->dreg, ins->inst_imm);
3274 amd64_widen_membase (code, ins->dreg, ins->dreg, 0, FALSE, FALSE);
3277 amd64_mov_reg_imm (code, ins->dreg, ins->inst_imm);
3278 amd64_widen_membase (code, ins->dreg, ins->dreg, 0, FALSE, TRUE);
3280 case OP_LOAD_MEMBASE:
3281 case OP_LOADI8_MEMBASE:
3282 g_assert (amd64_is_imm32 (ins->inst_offset));
3283 amd64_mov_reg_membase (code, ins->dreg, ins->inst_basereg, ins->inst_offset, sizeof (gpointer));
3285 case OP_LOADI4_MEMBASE:
3286 amd64_movsxd_reg_membase (code, ins->dreg, ins->inst_basereg, ins->inst_offset);
3288 case OP_LOADU4_MEMBASE:
3289 amd64_mov_reg_membase (code, ins->dreg, ins->inst_basereg, ins->inst_offset, 4);
3291 case OP_LOADU1_MEMBASE:
3292 /* The cpu zero extends the result into 64 bits */
3293 amd64_widen_membase_size (code, ins->dreg, ins->inst_basereg, ins->inst_offset, FALSE, FALSE, 4);
3295 case OP_LOADI1_MEMBASE:
3296 amd64_widen_membase (code, ins->dreg, ins->inst_basereg, ins->inst_offset, TRUE, FALSE);
3298 case OP_LOADU2_MEMBASE:
3299 /* The cpu zero extends the result into 64 bits */
3300 amd64_widen_membase_size (code, ins->dreg, ins->inst_basereg, ins->inst_offset, FALSE, TRUE, 4);
3302 case OP_LOADI2_MEMBASE:
3303 amd64_widen_membase (code, ins->dreg, ins->inst_basereg, ins->inst_offset, TRUE, TRUE);
3305 case OP_AMD64_LOADI8_MEMINDEX:
3306 amd64_mov_reg_memindex_size (code, ins->dreg, ins->inst_basereg, 0, ins->inst_indexreg, 0, 8);
3308 case OP_LCONV_TO_I1:
3309 case OP_ICONV_TO_I1:
3311 amd64_widen_reg (code, ins->dreg, ins->sreg1, TRUE, FALSE);
3313 case OP_LCONV_TO_I2:
3314 case OP_ICONV_TO_I2:
3316 amd64_widen_reg (code, ins->dreg, ins->sreg1, TRUE, TRUE);
3318 case OP_LCONV_TO_U1:
3319 case OP_ICONV_TO_U1:
3320 amd64_widen_reg (code, ins->dreg, ins->sreg1, FALSE, FALSE);
3322 case OP_LCONV_TO_U2:
3323 case OP_ICONV_TO_U2:
3324 amd64_widen_reg (code, ins->dreg, ins->sreg1, FALSE, TRUE);
3327 /* Clean out the upper word */
3328 amd64_mov_reg_reg_size (code, ins->dreg, ins->sreg1, 4);
3331 amd64_movsxd_reg_reg (code, ins->dreg, ins->sreg1);
3335 amd64_alu_reg_reg (code, X86_CMP, ins->sreg1, ins->sreg2);
3337 case OP_COMPARE_IMM:
3338 case OP_LCOMPARE_IMM:
3339 g_assert (amd64_is_imm32 (ins->inst_imm));
3340 amd64_alu_reg_imm (code, X86_CMP, ins->sreg1, ins->inst_imm);
3342 case OP_X86_COMPARE_REG_MEMBASE:
3343 amd64_alu_reg_membase (code, X86_CMP, ins->sreg1, ins->sreg2, ins->inst_offset);
3345 case OP_X86_TEST_NULL:
3346 amd64_test_reg_reg_size (code, ins->sreg1, ins->sreg1, 4);
3348 case OP_AMD64_TEST_NULL:
3349 amd64_test_reg_reg (code, ins->sreg1, ins->sreg1);
3352 case OP_X86_ADD_REG_MEMBASE:
3353 amd64_alu_reg_membase_size (code, X86_ADD, ins->sreg1, ins->sreg2, ins->inst_offset, 4);
3355 case OP_X86_SUB_REG_MEMBASE:
3356 amd64_alu_reg_membase_size (code, X86_SUB, ins->sreg1, ins->sreg2, ins->inst_offset, 4);
3358 case OP_X86_AND_REG_MEMBASE:
3359 amd64_alu_reg_membase_size (code, X86_AND, ins->sreg1, ins->sreg2, ins->inst_offset, 4);
3361 case OP_X86_OR_REG_MEMBASE:
3362 amd64_alu_reg_membase_size (code, X86_OR, ins->sreg1, ins->sreg2, ins->inst_offset, 4);
3364 case OP_X86_XOR_REG_MEMBASE:
3365 amd64_alu_reg_membase_size (code, X86_XOR, ins->sreg1, ins->sreg2, ins->inst_offset, 4);
3368 case OP_X86_ADD_MEMBASE_IMM:
3369 /* FIXME: Make a 64 version too */
3370 amd64_alu_membase_imm_size (code, X86_ADD, ins->inst_basereg, ins->inst_offset, ins->inst_imm, 4);
3372 case OP_X86_SUB_MEMBASE_IMM:
3373 g_assert (amd64_is_imm32 (ins->inst_imm));
3374 amd64_alu_membase_imm_size (code, X86_SUB, ins->inst_basereg, ins->inst_offset, ins->inst_imm, 4);
3376 case OP_X86_AND_MEMBASE_IMM:
3377 g_assert (amd64_is_imm32 (ins->inst_imm));
3378 amd64_alu_membase_imm_size (code, X86_AND, ins->inst_basereg, ins->inst_offset, ins->inst_imm, 4);
3380 case OP_X86_OR_MEMBASE_IMM:
3381 g_assert (amd64_is_imm32 (ins->inst_imm));
3382 amd64_alu_membase_imm_size (code, X86_OR, ins->inst_basereg, ins->inst_offset, ins->inst_imm, 4);
3384 case OP_X86_XOR_MEMBASE_IMM:
3385 g_assert (amd64_is_imm32 (ins->inst_imm));
3386 amd64_alu_membase_imm_size (code, X86_XOR, ins->inst_basereg, ins->inst_offset, ins->inst_imm, 4);
3388 case OP_X86_ADD_MEMBASE_REG:
3389 amd64_alu_membase_reg_size (code, X86_ADD, ins->inst_basereg, ins->inst_offset, ins->sreg2, 4);
3391 case OP_X86_SUB_MEMBASE_REG:
3392 amd64_alu_membase_reg_size (code, X86_SUB, ins->inst_basereg, ins->inst_offset, ins->sreg2, 4);
3394 case OP_X86_AND_MEMBASE_REG:
3395 amd64_alu_membase_reg_size (code, X86_AND, ins->inst_basereg, ins->inst_offset, ins->sreg2, 4);
3397 case OP_X86_OR_MEMBASE_REG:
3398 amd64_alu_membase_reg_size (code, X86_OR, ins->inst_basereg, ins->inst_offset, ins->sreg2, 4);
3400 case OP_X86_XOR_MEMBASE_REG:
3401 amd64_alu_membase_reg_size (code, X86_XOR, ins->inst_basereg, ins->inst_offset, ins->sreg2, 4);
3403 case OP_X86_INC_MEMBASE:
3404 amd64_inc_membase_size (code, ins->inst_basereg, ins->inst_offset, 4);
3406 case OP_X86_INC_REG:
3407 amd64_inc_reg_size (code, ins->dreg, 4);
3409 case OP_X86_DEC_MEMBASE:
3410 amd64_dec_membase_size (code, ins->inst_basereg, ins->inst_offset, 4);
3412 case OP_X86_DEC_REG:
3413 amd64_dec_reg_size (code, ins->dreg, 4);
3415 case OP_X86_MUL_REG_MEMBASE:
3416 case OP_X86_MUL_MEMBASE_REG:
3417 amd64_imul_reg_membase_size (code, ins->sreg1, ins->sreg2, ins->inst_offset, 4);
3419 case OP_AMD64_ICOMPARE_MEMBASE_REG:
3420 amd64_alu_membase_reg_size (code, X86_CMP, ins->inst_basereg, ins->inst_offset, ins->sreg2, 4);
3422 case OP_AMD64_ICOMPARE_MEMBASE_IMM:
3423 amd64_alu_membase_imm_size (code, X86_CMP, ins->inst_basereg, ins->inst_offset, ins->inst_imm, 4);
3425 case OP_AMD64_COMPARE_MEMBASE_REG:
3426 amd64_alu_membase_reg_size (code, X86_CMP, ins->inst_basereg, ins->inst_offset, ins->sreg2, 8);
3428 case OP_AMD64_COMPARE_MEMBASE_IMM:
3429 g_assert (amd64_is_imm32 (ins->inst_imm));
3430 amd64_alu_membase_imm_size (code, X86_CMP, ins->inst_basereg, ins->inst_offset, ins->inst_imm, 8);
3432 case OP_X86_COMPARE_MEMBASE8_IMM:
3433 amd64_alu_membase8_imm_size (code, X86_CMP, ins->inst_basereg, ins->inst_offset, ins->inst_imm, 4);
3435 case OP_AMD64_ICOMPARE_REG_MEMBASE:
3436 amd64_alu_reg_membase_size (code, X86_CMP, ins->sreg1, ins->sreg2, ins->inst_offset, 4);
3438 case OP_AMD64_COMPARE_REG_MEMBASE:
3439 amd64_alu_reg_membase_size (code, X86_CMP, ins->sreg1, ins->sreg2, ins->inst_offset, 8);
3442 case OP_AMD64_ADD_REG_MEMBASE:
3443 amd64_alu_reg_membase_size (code, X86_ADD, ins->sreg1, ins->sreg2, ins->inst_offset, 8);
3445 case OP_AMD64_SUB_REG_MEMBASE:
3446 amd64_alu_reg_membase_size (code, X86_SUB, ins->sreg1, ins->sreg2, ins->inst_offset, 8);
3448 case OP_AMD64_AND_REG_MEMBASE:
3449 amd64_alu_reg_membase_size (code, X86_AND, ins->sreg1, ins->sreg2, ins->inst_offset, 8);
3451 case OP_AMD64_OR_REG_MEMBASE:
3452 amd64_alu_reg_membase_size (code, X86_OR, ins->sreg1, ins->sreg2, ins->inst_offset, 8);
3454 case OP_AMD64_XOR_REG_MEMBASE:
3455 amd64_alu_reg_membase_size (code, X86_XOR, ins->sreg1, ins->sreg2, ins->inst_offset, 8);
3458 case OP_AMD64_ADD_MEMBASE_REG:
3459 amd64_alu_membase_reg_size (code, X86_ADD, ins->inst_basereg, ins->inst_offset, ins->sreg2, 8);
3461 case OP_AMD64_SUB_MEMBASE_REG:
3462 amd64_alu_membase_reg_size (code, X86_SUB, ins->inst_basereg, ins->inst_offset, ins->sreg2, 8);
3464 case OP_AMD64_AND_MEMBASE_REG:
3465 amd64_alu_membase_reg_size (code, X86_AND, ins->inst_basereg, ins->inst_offset, ins->sreg2, 8);
3467 case OP_AMD64_OR_MEMBASE_REG:
3468 amd64_alu_membase_reg_size (code, X86_OR, ins->inst_basereg, ins->inst_offset, ins->sreg2, 8);
3470 case OP_AMD64_XOR_MEMBASE_REG:
3471 amd64_alu_membase_reg_size (code, X86_XOR, ins->inst_basereg, ins->inst_offset, ins->sreg2, 8);
3474 case OP_AMD64_ADD_MEMBASE_IMM:
3475 g_assert (amd64_is_imm32 (ins->inst_imm));
3476 amd64_alu_membase_imm_size (code, X86_ADD, ins->inst_basereg, ins->inst_offset, ins->inst_imm, 8);
3478 case OP_AMD64_SUB_MEMBASE_IMM:
3479 g_assert (amd64_is_imm32 (ins->inst_imm));
3480 amd64_alu_membase_imm_size (code, X86_SUB, ins->inst_basereg, ins->inst_offset, ins->inst_imm, 8);
3482 case OP_AMD64_AND_MEMBASE_IMM:
3483 g_assert (amd64_is_imm32 (ins->inst_imm));
3484 amd64_alu_membase_imm_size (code, X86_AND, ins->inst_basereg, ins->inst_offset, ins->inst_imm, 8);
3486 case OP_AMD64_OR_MEMBASE_IMM:
3487 g_assert (amd64_is_imm32 (ins->inst_imm));
3488 amd64_alu_membase_imm_size (code, X86_OR, ins->inst_basereg, ins->inst_offset, ins->inst_imm, 8);
3490 case OP_AMD64_XOR_MEMBASE_IMM:
3491 g_assert (amd64_is_imm32 (ins->inst_imm));
3492 amd64_alu_membase_imm_size (code, X86_XOR, ins->inst_basereg, ins->inst_offset, ins->inst_imm, 8);
3496 amd64_breakpoint (code);
3498 case OP_RELAXED_NOP:
3499 x86_prefix (code, X86_REP_PREFIX);
3507 case OP_DUMMY_STORE:
3508 case OP_NOT_REACHED:
3511 case OP_SEQ_POINT: {
3514 if (cfg->compile_aot)
3518 * Read from the single stepping trigger page. This will cause a
3519 * SIGSEGV when single stepping is enabled.
3520 * We do this _before_ the breakpoint, so single stepping after
3521 * a breakpoint is hit will step to the next IL offset.
3523 g_assert (((guint64)ss_trigger_page >> 32) == 0);
3525 if (ins->flags & MONO_INST_SINGLE_STEP_LOC)
3526 amd64_mov_reg_mem (code, AMD64_R11, (guint64)ss_trigger_page, 4);
3528 il_offset = ins->inst_imm;
3530 if (!cfg->seq_points)
3531 cfg->seq_points = g_ptr_array_new ();
3532 g_ptr_array_add (cfg->seq_points, GUINT_TO_POINTER (il_offset));
3533 g_ptr_array_add (cfg->seq_points, GUINT_TO_POINTER (code - cfg->native_code));
3535 * A placeholder for a possible breakpoint inserted by
3536 * mono_arch_set_breakpoint ().
3538 for (i = 0; i < BREAKPOINT_SIZE; ++i)
3544 amd64_alu_reg_reg (code, X86_ADD, ins->sreg1, ins->sreg2);
3547 amd64_alu_reg_reg (code, X86_ADC, ins->sreg1, ins->sreg2);
3551 g_assert (amd64_is_imm32 (ins->inst_imm));
3552 amd64_alu_reg_imm (code, X86_ADD, ins->dreg, ins->inst_imm);
3555 g_assert (amd64_is_imm32 (ins->inst_imm));
3556 amd64_alu_reg_imm (code, X86_ADC, ins->dreg, ins->inst_imm);
3560 amd64_alu_reg_reg (code, X86_SUB, ins->sreg1, ins->sreg2);
3563 amd64_alu_reg_reg (code, X86_SBB, ins->sreg1, ins->sreg2);
3567 g_assert (amd64_is_imm32 (ins->inst_imm));
3568 amd64_alu_reg_imm (code, X86_SUB, ins->dreg, ins->inst_imm);
3571 g_assert (amd64_is_imm32 (ins->inst_imm));
3572 amd64_alu_reg_imm (code, X86_SBB, ins->dreg, ins->inst_imm);
3575 amd64_alu_reg_reg (code, X86_AND, ins->sreg1, ins->sreg2);
3579 g_assert (amd64_is_imm32 (ins->inst_imm));
3580 amd64_alu_reg_imm (code, X86_AND, ins->sreg1, ins->inst_imm);
3583 amd64_imul_reg_reg (code, ins->sreg1, ins->sreg2);
3588 guint32 size = (ins->opcode == OP_IMUL_IMM) ? 4 : 8;
3590 switch (ins->inst_imm) {
3594 if (ins->dreg != ins->sreg1)
3595 amd64_mov_reg_reg (code, ins->dreg, ins->sreg1, size);
3596 amd64_alu_reg_reg (code, X86_ADD, ins->dreg, ins->dreg);
3599 /* LEA r1, [r2 + r2*2] */
3600 amd64_lea_memindex (code, ins->dreg, ins->sreg1, 0, ins->sreg1, 1);
3603 /* LEA r1, [r2 + r2*4] */
3604 amd64_lea_memindex (code, ins->dreg, ins->sreg1, 0, ins->sreg1, 2);
3607 /* LEA r1, [r2 + r2*2] */
3609 amd64_lea_memindex (code, ins->dreg, ins->sreg1, 0, ins->sreg1, 1);
3610 amd64_alu_reg_reg (code, X86_ADD, ins->dreg, ins->dreg);
3613 /* LEA r1, [r2 + r2*8] */
3614 amd64_lea_memindex (code, ins->dreg, ins->sreg1, 0, ins->sreg1, 3);
3617 /* LEA r1, [r2 + r2*4] */
3619 amd64_lea_memindex (code, ins->dreg, ins->sreg1, 0, ins->sreg1, 2);
3620 amd64_alu_reg_reg (code, X86_ADD, ins->dreg, ins->dreg);
3623 /* LEA r1, [r2 + r2*2] */
3625 amd64_lea_memindex (code, ins->dreg, ins->sreg1, 0, ins->sreg1, 1);
3626 amd64_shift_reg_imm (code, X86_SHL, ins->dreg, 2);
3629 /* LEA r1, [r2 + r2*4] */
3630 /* LEA r1, [r1 + r1*4] */
3631 amd64_lea_memindex (code, ins->dreg, ins->sreg1, 0, ins->sreg1, 2);
3632 amd64_lea_memindex (code, ins->dreg, ins->dreg, 0, ins->dreg, 2);
3635 /* LEA r1, [r2 + r2*4] */
3637 /* LEA r1, [r1 + r1*4] */
3638 amd64_lea_memindex (code, ins->dreg, ins->sreg1, 0, ins->sreg1, 2);
3639 amd64_shift_reg_imm (code, X86_SHL, ins->dreg, 2);
3640 amd64_lea_memindex (code, ins->dreg, ins->dreg, 0, ins->dreg, 2);
3643 amd64_imul_reg_reg_imm_size (code, ins->dreg, ins->sreg1, ins->inst_imm, size);
3650 /* Regalloc magic makes the div/rem cases the same */
3651 if (ins->sreg2 == AMD64_RDX) {
3652 amd64_mov_membase_reg (code, AMD64_RSP, -8, AMD64_RDX, 8);
3654 amd64_div_membase (code, AMD64_RSP, -8, TRUE);
3657 amd64_div_reg (code, ins->sreg2, TRUE);
3662 if (ins->sreg2 == AMD64_RDX) {
3663 amd64_mov_membase_reg (code, AMD64_RSP, -8, AMD64_RDX, 8);
3664 amd64_alu_reg_reg (code, X86_XOR, AMD64_RDX, AMD64_RDX);
3665 amd64_div_membase (code, AMD64_RSP, -8, FALSE);
3667 amd64_alu_reg_reg (code, X86_XOR, AMD64_RDX, AMD64_RDX);
3668 amd64_div_reg (code, ins->sreg2, FALSE);
3673 if (ins->sreg2 == AMD64_RDX) {
3674 amd64_mov_membase_reg (code, AMD64_RSP, -8, AMD64_RDX, 8);
3675 amd64_cdq_size (code, 4);
3676 amd64_div_membase_size (code, AMD64_RSP, -8, TRUE, 4);
3678 amd64_cdq_size (code, 4);
3679 amd64_div_reg_size (code, ins->sreg2, TRUE, 4);
3684 if (ins->sreg2 == AMD64_RDX) {
3685 amd64_mov_membase_reg (code, AMD64_RSP, -8, AMD64_RDX, 8);
3686 amd64_alu_reg_reg (code, X86_XOR, AMD64_RDX, AMD64_RDX);
3687 amd64_div_membase_size (code, AMD64_RSP, -8, FALSE, 4);
3689 amd64_alu_reg_reg (code, X86_XOR, AMD64_RDX, AMD64_RDX);
3690 amd64_div_reg_size (code, ins->sreg2, FALSE, 4);
3694 int power = mono_is_power_of_two (ins->inst_imm);
3696 g_assert (ins->sreg1 == X86_EAX);
3697 g_assert (ins->dreg == X86_EAX);
3698 g_assert (power >= 0);
3701 amd64_mov_reg_imm (code, ins->dreg, 0);
3705 /* Based on gcc code */
3707 /* Add compensation for negative dividents */
3708 amd64_mov_reg_reg_size (code, AMD64_RDX, AMD64_RAX, 4);
3710 amd64_shift_reg_imm_size (code, X86_SAR, AMD64_RDX, 31, 4);
3711 amd64_shift_reg_imm_size (code, X86_SHR, AMD64_RDX, 32 - power, 4);
3712 amd64_alu_reg_reg_size (code, X86_ADD, AMD64_RAX, AMD64_RDX, 4);
3713 /* Compute remainder */
3714 amd64_alu_reg_imm_size (code, X86_AND, AMD64_RAX, (1 << power) - 1, 4);
3715 /* Remove compensation */
3716 amd64_alu_reg_reg_size (code, X86_SUB, AMD64_RAX, AMD64_RDX, 4);
3720 amd64_imul_reg_reg (code, ins->sreg1, ins->sreg2);
3721 EMIT_COND_SYSTEM_EXCEPTION (X86_CC_O, FALSE, "OverflowException");
3724 amd64_alu_reg_reg (code, X86_OR, ins->sreg1, ins->sreg2);
3728 g_assert (amd64_is_imm32 (ins->inst_imm));
3729 amd64_alu_reg_imm (code, X86_OR, ins->sreg1, ins->inst_imm);
3732 amd64_alu_reg_reg (code, X86_XOR, ins->sreg1, ins->sreg2);
3736 g_assert (amd64_is_imm32 (ins->inst_imm));
3737 amd64_alu_reg_imm (code, X86_XOR, ins->sreg1, ins->inst_imm);
3740 g_assert (ins->sreg2 == AMD64_RCX);
3741 amd64_shift_reg (code, X86_SHL, ins->dreg);
3744 g_assert (ins->sreg2 == AMD64_RCX);
3745 amd64_shift_reg (code, X86_SAR, ins->dreg);
3748 g_assert (amd64_is_imm32 (ins->inst_imm));
3749 amd64_shift_reg_imm_size (code, X86_SAR, ins->dreg, ins->inst_imm, 4);
3752 g_assert (amd64_is_imm32 (ins->inst_imm));
3753 amd64_shift_reg_imm (code, X86_SAR, ins->dreg, ins->inst_imm);
3756 g_assert (amd64_is_imm32 (ins->inst_imm));
3757 amd64_shift_reg_imm_size (code, X86_SHR, ins->dreg, ins->inst_imm, 4);
3759 case OP_LSHR_UN_IMM:
3760 g_assert (amd64_is_imm32 (ins->inst_imm));
3761 amd64_shift_reg_imm (code, X86_SHR, ins->dreg, ins->inst_imm);
3764 g_assert (ins->sreg2 == AMD64_RCX);
3765 amd64_shift_reg (code, X86_SHR, ins->dreg);
3768 g_assert (amd64_is_imm32 (ins->inst_imm));
3769 amd64_shift_reg_imm_size (code, X86_SHL, ins->dreg, ins->inst_imm, 4);
3772 g_assert (amd64_is_imm32 (ins->inst_imm));
3773 amd64_shift_reg_imm (code, X86_SHL, ins->dreg, ins->inst_imm);
3778 amd64_alu_reg_reg_size (code, X86_ADD, ins->sreg1, ins->sreg2, 4);
3781 amd64_alu_reg_reg_size (code, X86_ADC, ins->sreg1, ins->sreg2, 4);
3784 amd64_alu_reg_imm_size (code, X86_ADD, ins->dreg, ins->inst_imm, 4);
3787 amd64_alu_reg_imm_size (code, X86_ADC, ins->dreg, ins->inst_imm, 4);
3791 amd64_alu_reg_reg_size (code, X86_SUB, ins->sreg1, ins->sreg2, 4);
3794 amd64_alu_reg_reg_size (code, X86_SBB, ins->sreg1, ins->sreg2, 4);
3797 amd64_alu_reg_imm_size (code, X86_SUB, ins->dreg, ins->inst_imm, 4);
3800 amd64_alu_reg_imm_size (code, X86_SBB, ins->dreg, ins->inst_imm, 4);
3803 amd64_alu_reg_reg_size (code, X86_AND, ins->sreg1, ins->sreg2, 4);
3806 amd64_alu_reg_imm_size (code, X86_AND, ins->sreg1, ins->inst_imm, 4);
3809 amd64_alu_reg_reg_size (code, X86_OR, ins->sreg1, ins->sreg2, 4);
3812 amd64_alu_reg_imm_size (code, X86_OR, ins->sreg1, ins->inst_imm, 4);
3815 amd64_alu_reg_reg_size (code, X86_XOR, ins->sreg1, ins->sreg2, 4);
3818 amd64_alu_reg_imm_size (code, X86_XOR, ins->sreg1, ins->inst_imm, 4);
3821 amd64_neg_reg_size (code, ins->sreg1, 4);
3824 amd64_not_reg_size (code, ins->sreg1, 4);
3827 g_assert (ins->sreg2 == AMD64_RCX);
3828 amd64_shift_reg_size (code, X86_SHL, ins->dreg, 4);
3831 g_assert (ins->sreg2 == AMD64_RCX);
3832 amd64_shift_reg_size (code, X86_SAR, ins->dreg, 4);
3835 amd64_shift_reg_imm_size (code, X86_SAR, ins->dreg, ins->inst_imm, 4);
3837 case OP_ISHR_UN_IMM:
3838 amd64_shift_reg_imm_size (code, X86_SHR, ins->dreg, ins->inst_imm, 4);
3841 g_assert (ins->sreg2 == AMD64_RCX);
3842 amd64_shift_reg_size (code, X86_SHR, ins->dreg, 4);
3845 amd64_shift_reg_imm_size (code, X86_SHL, ins->dreg, ins->inst_imm, 4);
3848 amd64_imul_reg_reg_size (code, ins->sreg1, ins->sreg2, 4);
3851 amd64_imul_reg_reg_size (code, ins->sreg1, ins->sreg2, 4);
3852 EMIT_COND_SYSTEM_EXCEPTION (X86_CC_O, FALSE, "OverflowException");
3854 case OP_IMUL_OVF_UN:
3855 case OP_LMUL_OVF_UN: {
3856 /* the mul operation and the exception check should most likely be split */
3857 int non_eax_reg, saved_eax = FALSE, saved_edx = FALSE;
3858 int size = (ins->opcode == OP_IMUL_OVF_UN) ? 4 : 8;
3859 /*g_assert (ins->sreg2 == X86_EAX);
3860 g_assert (ins->dreg == X86_EAX);*/
3861 if (ins->sreg2 == X86_EAX) {
3862 non_eax_reg = ins->sreg1;
3863 } else if (ins->sreg1 == X86_EAX) {
3864 non_eax_reg = ins->sreg2;
3866 /* no need to save since we're going to store to it anyway */
3867 if (ins->dreg != X86_EAX) {
3869 amd64_push_reg (code, X86_EAX);
3871 amd64_mov_reg_reg (code, X86_EAX, ins->sreg1, size);
3872 non_eax_reg = ins->sreg2;
3874 if (ins->dreg == X86_EDX) {
3877 amd64_push_reg (code, X86_EAX);
3881 amd64_push_reg (code, X86_EDX);
3883 amd64_mul_reg_size (code, non_eax_reg, FALSE, size);
3884 /* save before the check since pop and mov don't change the flags */
3885 if (ins->dreg != X86_EAX)
3886 amd64_mov_reg_reg (code, ins->dreg, X86_EAX, size);
3888 amd64_pop_reg (code, X86_EDX);
3890 amd64_pop_reg (code, X86_EAX);
3891 EMIT_COND_SYSTEM_EXCEPTION (X86_CC_O, FALSE, "OverflowException");
3895 amd64_alu_reg_reg_size (code, X86_CMP, ins->sreg1, ins->sreg2, 4);
3897 case OP_ICOMPARE_IMM:
3898 amd64_alu_reg_imm_size (code, X86_CMP, ins->sreg1, ins->inst_imm, 4);
3920 EMIT_COND_BRANCH (ins, cc_table [mono_opcode_to_cond (ins->opcode)], cc_signed_table [mono_opcode_to_cond (ins->opcode)]);
3928 case OP_CMOV_INE_UN:
3929 case OP_CMOV_IGE_UN:
3930 case OP_CMOV_IGT_UN:
3931 case OP_CMOV_ILE_UN:
3932 case OP_CMOV_ILT_UN:
3938 case OP_CMOV_LNE_UN:
3939 case OP_CMOV_LGE_UN:
3940 case OP_CMOV_LGT_UN:
3941 case OP_CMOV_LLE_UN:
3942 case OP_CMOV_LLT_UN:
3943 g_assert (ins->dreg == ins->sreg1);
3944 /* This needs to operate on 64 bit values */
3945 amd64_cmov_reg (code, cc_table [mono_opcode_to_cond (ins->opcode)], cc_signed_table [mono_opcode_to_cond (ins->opcode)], ins->dreg, ins->sreg2);
3949 amd64_not_reg (code, ins->sreg1);
3952 amd64_neg_reg (code, ins->sreg1);
3957 if ((((guint64)ins->inst_c0) >> 32) == 0)
3958 amd64_mov_reg_imm_size (code, ins->dreg, ins->inst_c0, 4);
3960 amd64_mov_reg_imm_size (code, ins->dreg, ins->inst_c0, 8);
3963 mono_add_patch_info (cfg, offset, (MonoJumpInfoType)ins->inst_i1, ins->inst_p0);
3964 amd64_mov_reg_membase (code, ins->dreg, AMD64_RIP, 0, 8);
3967 mono_add_patch_info (cfg, offset, (MonoJumpInfoType)ins->inst_i1, ins->inst_p0);
3968 amd64_mov_reg_imm_size (code, ins->dreg, 0, 8);
3971 amd64_mov_reg_reg (code, ins->dreg, ins->sreg1, sizeof (gpointer));
3973 case OP_AMD64_SET_XMMREG_R4: {
3974 amd64_sse_cvtsd2ss_reg_reg (code, ins->dreg, ins->sreg1);
3977 case OP_AMD64_SET_XMMREG_R8: {
3978 if (ins->dreg != ins->sreg1)
3979 amd64_sse_movsd_reg_reg (code, ins->dreg, ins->sreg1);
3984 * Note: this 'frame destruction' logic is useful for tail calls, too.
3985 * Keep in sync with the code in emit_epilog.
3989 /* FIXME: no tracing support... */
3990 if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE)
3991 code = mono_arch_instrument_epilog_full (cfg, mono_profiler_method_leave, code, FALSE, FALSE);
3993 g_assert (!cfg->method->save_lmf);
3995 if (cfg->arch.omit_fp) {
3996 guint32 save_offset = 0;
3997 /* Pop callee-saved registers */
3998 for (i = 0; i < AMD64_NREG; ++i)
3999 if (AMD64_IS_CALLEE_SAVED_REG (i) && (cfg->used_int_regs & (1 << i))) {
4000 amd64_mov_reg_membase (code, i, AMD64_RSP, save_offset, 8);
4003 amd64_alu_reg_imm (code, X86_ADD, AMD64_RSP, cfg->arch.stack_alloc_size);
4006 for (i = 0; i < AMD64_NREG; ++i)
4007 if (AMD64_IS_CALLEE_SAVED_REG (i) && (cfg->used_int_regs & (1 << i)))
4008 pos -= sizeof (gpointer);
4011 amd64_lea_membase (code, AMD64_RSP, AMD64_RBP, pos);
4013 /* Pop registers in reverse order */
4014 for (i = AMD64_NREG - 1; i > 0; --i)
4015 if (AMD64_IS_CALLEE_SAVED_REG (i) && (cfg->used_int_regs & (1 << i))) {
4016 amd64_pop_reg (code, i);
4022 offset = code - cfg->native_code;
4023 mono_add_patch_info (cfg, code - cfg->native_code, MONO_PATCH_INFO_METHOD_JUMP, ins->inst_p0);
4024 if (cfg->compile_aot)
4025 amd64_mov_reg_membase (code, AMD64_R11, AMD64_RIP, 0, 8);
4027 amd64_set_reg_template (code, AMD64_R11);
4028 amd64_jump_reg (code, AMD64_R11);
4032 /* ensure ins->sreg1 is not NULL */
4033 amd64_alu_membase_imm_size (code, X86_CMP, ins->sreg1, 0, 0, 4);
4036 amd64_lea_membase (code, AMD64_R11, cfg->frame_reg, cfg->sig_cookie);
4037 amd64_mov_membase_reg (code, ins->sreg1, 0, AMD64_R11, 8);
4046 call = (MonoCallInst*)ins;
4048 * The AMD64 ABI forces callers to know about varargs.
4050 if ((call->signature->call_convention == MONO_CALL_VARARG) && (call->signature->pinvoke))
4051 amd64_alu_reg_reg (code, X86_XOR, AMD64_RAX, AMD64_RAX);
4052 else if ((cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) && (cfg->method->klass->image != mono_defaults.corlib)) {
4054 * Since the unmanaged calling convention doesn't contain a
4055 * 'vararg' entry, we have to treat every pinvoke call as a
4056 * potential vararg call.
4060 for (i = 0; i < AMD64_XMM_NREG; ++i)
4061 if (call->used_fregs & (1 << i))
4064 amd64_alu_reg_reg (code, X86_XOR, AMD64_RAX, AMD64_RAX);
4066 amd64_mov_reg_imm (code, AMD64_RAX, nregs);
4069 if (ins->flags & MONO_INST_HAS_METHOD)
4070 code = emit_call (cfg, code, MONO_PATCH_INFO_METHOD, call->method, FALSE);
4072 code = emit_call (cfg, code, MONO_PATCH_INFO_ABS, call->fptr, FALSE);
4073 if (call->stack_usage && !CALLCONV_IS_STDCALL (call->signature->call_convention) && !cfg->arch.no_pushes)
4074 amd64_alu_reg_imm (code, X86_ADD, AMD64_RSP, call->stack_usage);
4075 code = emit_move_return_value (cfg, ins, code);
4081 case OP_VOIDCALL_REG:
4083 call = (MonoCallInst*)ins;
4085 if (AMD64_IS_ARGUMENT_REG (ins->sreg1)) {
4086 amd64_mov_reg_reg (code, AMD64_R11, ins->sreg1, 8);
4087 ins->sreg1 = AMD64_R11;
4091 * The AMD64 ABI forces callers to know about varargs.
4093 if ((call->signature->call_convention == MONO_CALL_VARARG) && (call->signature->pinvoke)) {
4094 if (ins->sreg1 == AMD64_RAX) {
4095 amd64_mov_reg_reg (code, AMD64_R11, AMD64_RAX, 8);
4096 ins->sreg1 = AMD64_R11;
4098 amd64_alu_reg_reg (code, X86_XOR, AMD64_RAX, AMD64_RAX);
4099 } else if ((cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) && (cfg->method->klass->image != mono_defaults.corlib)) {
4101 * Since the unmanaged calling convention doesn't contain a
4102 * 'vararg' entry, we have to treat every pinvoke call as a
4103 * potential vararg call.
4107 for (i = 0; i < AMD64_XMM_NREG; ++i)
4108 if (call->used_fregs & (1 << i))
4110 if (ins->sreg1 == AMD64_RAX) {
4111 amd64_mov_reg_reg (code, AMD64_R11, AMD64_RAX, 8);
4112 ins->sreg1 = AMD64_R11;
4115 amd64_alu_reg_reg (code, X86_XOR, AMD64_RAX, AMD64_RAX);
4117 amd64_mov_reg_imm (code, AMD64_RAX, nregs);
4120 amd64_call_reg (code, ins->sreg1);
4121 if (call->stack_usage && !CALLCONV_IS_STDCALL (call->signature->call_convention) && !cfg->arch.no_pushes)
4122 amd64_alu_reg_imm (code, X86_ADD, AMD64_RSP, call->stack_usage);
4123 code = emit_move_return_value (cfg, ins, code);
4125 case OP_FCALL_MEMBASE:
4126 case OP_LCALL_MEMBASE:
4127 case OP_VCALL_MEMBASE:
4128 case OP_VCALL2_MEMBASE:
4129 case OP_VOIDCALL_MEMBASE:
4130 case OP_CALL_MEMBASE:
4131 call = (MonoCallInst*)ins;
4133 if (AMD64_IS_ARGUMENT_REG (ins->sreg1)) {
4135 * Can't use R11 because it is clobbered by the trampoline
4136 * code, and the reg value is needed by get_vcall_slot_addr.
4138 amd64_mov_reg_reg (code, AMD64_RAX, ins->sreg1, 8);
4139 ins->sreg1 = AMD64_RAX;
4143 * Emit a few nops to simplify get_vcall_slot ().
4149 amd64_call_membase (code, ins->sreg1, ins->inst_offset);
4150 if (call->stack_usage && !CALLCONV_IS_STDCALL (call->signature->call_convention) && !cfg->arch.no_pushes)
4151 amd64_alu_reg_imm (code, X86_ADD, AMD64_RSP, call->stack_usage);
4152 code = emit_move_return_value (cfg, ins, code);
4156 MonoInst *var = cfg->dyn_call_var;
4158 g_assert (var->opcode == OP_REGOFFSET);
4160 /* r11 = args buffer filled by mono_arch_get_dyn_call_args () */
4161 amd64_mov_reg_reg (code, AMD64_R11, ins->sreg1, 8);
4163 amd64_mov_reg_reg (code, AMD64_R10, ins->sreg2, 8);
4165 /* Save args buffer */
4166 amd64_mov_membase_reg (code, var->inst_basereg, var->inst_offset, AMD64_R11, 8);
4168 /* Set argument registers */
4169 for (i = 0; i < PARAM_REGS; ++i)
4170 amd64_mov_reg_membase (code, param_regs [i], AMD64_R11, i * sizeof (gpointer), 8);
4173 amd64_call_reg (code, AMD64_R10);
4176 amd64_mov_reg_membase (code, AMD64_R11, var->inst_basereg, var->inst_offset, 8);
4177 amd64_mov_membase_reg (code, AMD64_R11, G_STRUCT_OFFSET (DynCallArgs, res), AMD64_RAX, 8);
4180 case OP_AMD64_SAVE_SP_TO_LMF:
4181 amd64_mov_membase_reg (code, cfg->frame_reg, cfg->arch.lmf_offset + G_STRUCT_OFFSET (MonoLMF, rsp), AMD64_RSP, 8);
4184 g_assert (!cfg->arch.no_pushes);
4185 amd64_push_reg (code, ins->sreg1);
4187 case OP_X86_PUSH_IMM:
4188 g_assert (!cfg->arch.no_pushes);
4189 g_assert (amd64_is_imm32 (ins->inst_imm));
4190 amd64_push_imm (code, ins->inst_imm);
4192 case OP_X86_PUSH_MEMBASE:
4193 g_assert (!cfg->arch.no_pushes);
4194 amd64_push_membase (code, ins->inst_basereg, ins->inst_offset);
4196 case OP_X86_PUSH_OBJ: {
4197 int size = ALIGN_TO (ins->inst_imm, 8);
4199 g_assert (!cfg->arch.no_pushes);
4201 amd64_alu_reg_imm (code, X86_SUB, AMD64_RSP, size);
4202 amd64_push_reg (code, AMD64_RDI);
4203 amd64_push_reg (code, AMD64_RSI);
4204 amd64_push_reg (code, AMD64_RCX);
4205 if (ins->inst_offset)
4206 amd64_lea_membase (code, AMD64_RSI, ins->inst_basereg, ins->inst_offset);
4208 amd64_mov_reg_reg (code, AMD64_RSI, ins->inst_basereg, 8);
4209 amd64_lea_membase (code, AMD64_RDI, AMD64_RSP, (3 * 8));
4210 amd64_mov_reg_imm (code, AMD64_RCX, (size >> 3));
4212 amd64_prefix (code, X86_REP_PREFIX);
4214 amd64_pop_reg (code, AMD64_RCX);
4215 amd64_pop_reg (code, AMD64_RSI);
4216 amd64_pop_reg (code, AMD64_RDI);
4220 amd64_lea_memindex (code, ins->dreg, ins->sreg1, ins->inst_imm, ins->sreg2, ins->backend.shift_amount);
4222 case OP_X86_LEA_MEMBASE:
4223 amd64_lea_membase (code, ins->dreg, ins->sreg1, ins->inst_imm);
4226 amd64_xchg_reg_reg (code, ins->sreg1, ins->sreg2, 4);
4229 /* keep alignment */
4230 amd64_alu_reg_imm (code, X86_ADD, ins->sreg1, MONO_ARCH_FRAME_ALIGNMENT - 1);
4231 amd64_alu_reg_imm (code, X86_AND, ins->sreg1, ~(MONO_ARCH_FRAME_ALIGNMENT - 1));
4232 code = mono_emit_stack_alloc (cfg, code, ins);
4233 amd64_mov_reg_reg (code, ins->dreg, AMD64_RSP, 8);
4234 if (cfg->param_area && cfg->arch.no_pushes)
4235 amd64_alu_reg_imm (code, X86_ADD, ins->dreg, cfg->param_area);
4237 case OP_LOCALLOC_IMM: {
4238 guint32 size = ins->inst_imm;
4239 size = (size + (MONO_ARCH_FRAME_ALIGNMENT - 1)) & ~ (MONO_ARCH_FRAME_ALIGNMENT - 1);
4241 if (ins->flags & MONO_INST_INIT) {
4245 amd64_alu_reg_imm (code, X86_SUB, AMD64_RSP, size);
4246 amd64_alu_reg_reg (code, X86_XOR, ins->dreg, ins->dreg);
4248 for (i = 0; i < size; i += 8)
4249 amd64_mov_membase_reg (code, AMD64_RSP, i, ins->dreg, 8);
4250 amd64_mov_reg_reg (code, ins->dreg, AMD64_RSP, 8);
4252 amd64_mov_reg_imm (code, ins->dreg, size);
4253 ins->sreg1 = ins->dreg;
4255 code = mono_emit_stack_alloc (cfg, code, ins);
4256 amd64_mov_reg_reg (code, ins->dreg, AMD64_RSP, 8);
4259 amd64_alu_reg_imm (code, X86_SUB, AMD64_RSP, size);
4260 amd64_mov_reg_reg (code, ins->dreg, AMD64_RSP, 8);
4262 if (cfg->param_area && cfg->arch.no_pushes)
4263 amd64_alu_reg_imm (code, X86_ADD, ins->dreg, cfg->param_area);
4267 amd64_mov_reg_reg (code, AMD64_ARG_REG1, ins->sreg1, 8);
4268 code = emit_call (cfg, code, MONO_PATCH_INFO_INTERNAL_METHOD,
4269 (gpointer)"mono_arch_throw_exception", FALSE);
4273 amd64_mov_reg_reg (code, AMD64_ARG_REG1, ins->sreg1, 8);
4274 code = emit_call (cfg, code, MONO_PATCH_INFO_INTERNAL_METHOD,
4275 (gpointer)"mono_arch_rethrow_exception", FALSE);
4278 case OP_CALL_HANDLER:
4280 amd64_alu_reg_imm (code, X86_SUB, AMD64_RSP, 8);
4281 mono_add_patch_info (cfg, code - cfg->native_code, MONO_PATCH_INFO_BB, ins->inst_target_bb);
4282 amd64_call_imm (code, 0);
4283 /* Restore stack alignment */
4284 amd64_alu_reg_imm (code, X86_ADD, AMD64_RSP, 8);
4286 case OP_START_HANDLER: {
4287 MonoInst *spvar = mono_find_spvar_for_region (cfg, bb->region);
4288 amd64_mov_membase_reg (code, spvar->inst_basereg, spvar->inst_offset, AMD64_RSP, 8);
4290 if ((MONO_BBLOCK_IS_IN_REGION (bb, MONO_REGION_FINALLY) ||
4291 MONO_BBLOCK_IS_IN_REGION (bb, MONO_REGION_FINALLY)) &&
4292 cfg->param_area && cfg->arch.no_pushes) {
4293 amd64_alu_reg_imm (code, X86_SUB, AMD64_RSP, ALIGN_TO (cfg->param_area, MONO_ARCH_FRAME_ALIGNMENT));
4297 case OP_ENDFINALLY: {
4298 MonoInst *spvar = mono_find_spvar_for_region (cfg, bb->region);
4299 amd64_mov_reg_membase (code, AMD64_RSP, spvar->inst_basereg, spvar->inst_offset, 8);
4303 case OP_ENDFILTER: {
4304 MonoInst *spvar = mono_find_spvar_for_region (cfg, bb->region);
4305 amd64_mov_reg_membase (code, AMD64_RSP, spvar->inst_basereg, spvar->inst_offset, 8);
4306 /* The local allocator will put the result into RAX */
4312 ins->inst_c0 = code - cfg->native_code;
4315 //g_print ("target: %p, next: %p, curr: %p, last: %p\n", ins->inst_target_bb, bb->next_bb, ins, bb->last_ins);
4316 //if ((ins->inst_target_bb == bb->next_bb) && ins == bb->last_ins)
4318 if (ins->inst_target_bb->native_offset) {
4319 amd64_jump_code (code, cfg->native_code + ins->inst_target_bb->native_offset);
4321 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_BB, ins->inst_target_bb);
4322 if ((cfg->opt & MONO_OPT_BRANCH) &&
4323 x86_is_imm8 (ins->inst_target_bb->max_offset - offset))
4324 x86_jump8 (code, 0);
4326 x86_jump32 (code, 0);
4330 amd64_jump_reg (code, ins->sreg1);
4347 amd64_set_reg (code, cc_table [mono_opcode_to_cond (ins->opcode)], ins->dreg, cc_signed_table [mono_opcode_to_cond (ins->opcode)]);
4348 amd64_widen_reg (code, ins->dreg, ins->dreg, FALSE, FALSE);
4350 case OP_COND_EXC_EQ:
4351 case OP_COND_EXC_NE_UN:
4352 case OP_COND_EXC_LT:
4353 case OP_COND_EXC_LT_UN:
4354 case OP_COND_EXC_GT:
4355 case OP_COND_EXC_GT_UN:
4356 case OP_COND_EXC_GE:
4357 case OP_COND_EXC_GE_UN:
4358 case OP_COND_EXC_LE:
4359 case OP_COND_EXC_LE_UN:
4360 case OP_COND_EXC_IEQ:
4361 case OP_COND_EXC_INE_UN:
4362 case OP_COND_EXC_ILT:
4363 case OP_COND_EXC_ILT_UN:
4364 case OP_COND_EXC_IGT:
4365 case OP_COND_EXC_IGT_UN:
4366 case OP_COND_EXC_IGE:
4367 case OP_COND_EXC_IGE_UN:
4368 case OP_COND_EXC_ILE:
4369 case OP_COND_EXC_ILE_UN:
4370 EMIT_COND_SYSTEM_EXCEPTION (cc_table [mono_opcode_to_cond (ins->opcode)], cc_signed_table [mono_opcode_to_cond (ins->opcode)], ins->inst_p1);
4372 case OP_COND_EXC_OV:
4373 case OP_COND_EXC_NO:
4375 case OP_COND_EXC_NC:
4376 EMIT_COND_SYSTEM_EXCEPTION (branch_cc_table [ins->opcode - OP_COND_EXC_EQ],
4377 (ins->opcode < OP_COND_EXC_NE_UN), ins->inst_p1);
4379 case OP_COND_EXC_IOV:
4380 case OP_COND_EXC_INO:
4381 case OP_COND_EXC_IC:
4382 case OP_COND_EXC_INC:
4383 EMIT_COND_SYSTEM_EXCEPTION (branch_cc_table [ins->opcode - OP_COND_EXC_IEQ],
4384 (ins->opcode < OP_COND_EXC_INE_UN), ins->inst_p1);
4387 /* floating point opcodes */
4389 double d = *(double *)ins->inst_p0;
4391 if ((d == 0.0) && (mono_signbit (d) == 0)) {
4392 amd64_sse_xorpd_reg_reg (code, ins->dreg, ins->dreg);
4395 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_R8, ins->inst_p0);
4396 amd64_sse_movsd_reg_membase (code, ins->dreg, AMD64_RIP, 0);
4401 float f = *(float *)ins->inst_p0;
4403 if ((f == 0.0) && (mono_signbit (f) == 0)) {
4404 amd64_sse_xorpd_reg_reg (code, ins->dreg, ins->dreg);
4407 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_R4, ins->inst_p0);
4408 amd64_sse_movss_reg_membase (code, ins->dreg, AMD64_RIP, 0);
4409 amd64_sse_cvtss2sd_reg_reg (code, ins->dreg, ins->dreg);
4413 case OP_STORER8_MEMBASE_REG:
4414 amd64_sse_movsd_membase_reg (code, ins->inst_destbasereg, ins->inst_offset, ins->sreg1);
4416 case OP_LOADR8_MEMBASE:
4417 amd64_sse_movsd_reg_membase (code, ins->dreg, ins->inst_basereg, ins->inst_offset);
4419 case OP_STORER4_MEMBASE_REG:
4420 /* This requires a double->single conversion */
4421 amd64_sse_cvtsd2ss_reg_reg (code, AMD64_XMM15, ins->sreg1);
4422 amd64_sse_movss_membase_reg (code, ins->inst_destbasereg, ins->inst_offset, AMD64_XMM15);
4424 case OP_LOADR4_MEMBASE:
4425 amd64_sse_movss_reg_membase (code, ins->dreg, ins->inst_basereg, ins->inst_offset);
4426 amd64_sse_cvtss2sd_reg_reg (code, ins->dreg, ins->dreg);
4428 case OP_ICONV_TO_R4: /* FIXME: change precision */
4429 case OP_ICONV_TO_R8:
4430 amd64_sse_cvtsi2sd_reg_reg_size (code, ins->dreg, ins->sreg1, 4);
4432 case OP_LCONV_TO_R4: /* FIXME: change precision */
4433 case OP_LCONV_TO_R8:
4434 amd64_sse_cvtsi2sd_reg_reg (code, ins->dreg, ins->sreg1);
4436 case OP_FCONV_TO_R4:
4437 /* FIXME: nothing to do ?? */
4439 case OP_FCONV_TO_I1:
4440 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, TRUE);
4442 case OP_FCONV_TO_U1:
4443 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, FALSE);
4445 case OP_FCONV_TO_I2:
4446 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, TRUE);
4448 case OP_FCONV_TO_U2:
4449 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, FALSE);
4451 case OP_FCONV_TO_U4:
4452 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, FALSE);
4454 case OP_FCONV_TO_I4:
4456 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, TRUE);
4458 case OP_FCONV_TO_I8:
4459 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 8, TRUE);
4461 case OP_LCONV_TO_R_UN: {
4464 /* Based on gcc code */
4465 amd64_test_reg_reg (code, ins->sreg1, ins->sreg1);
4466 br [0] = code; x86_branch8 (code, X86_CC_S, 0, TRUE);
4469 amd64_sse_cvtsi2sd_reg_reg (code, ins->dreg, ins->sreg1);
4470 br [1] = code; x86_jump8 (code, 0);
4471 amd64_patch (br [0], code);
4474 /* Save to the red zone */
4475 amd64_mov_membase_reg (code, AMD64_RSP, -8, AMD64_RAX, 8);
4476 amd64_mov_membase_reg (code, AMD64_RSP, -16, AMD64_RCX, 8);
4477 amd64_mov_reg_reg (code, AMD64_RCX, ins->sreg1, 8);
4478 amd64_mov_reg_reg (code, AMD64_RAX, ins->sreg1, 8);
4479 amd64_alu_reg_imm (code, X86_AND, AMD64_RCX, 1);
4480 amd64_shift_reg_imm (code, X86_SHR, AMD64_RAX, 1);
4481 amd64_alu_reg_imm (code, X86_OR, AMD64_RAX, AMD64_RCX);
4482 amd64_sse_cvtsi2sd_reg_reg (code, ins->dreg, AMD64_RAX);
4483 amd64_sse_addsd_reg_reg (code, ins->dreg, ins->dreg);
4485 amd64_mov_reg_membase (code, AMD64_RCX, AMD64_RSP, -16, 8);
4486 amd64_mov_reg_membase (code, AMD64_RAX, AMD64_RSP, -8, 8);
4487 amd64_patch (br [1], code);
4490 case OP_LCONV_TO_OVF_U4:
4491 amd64_alu_reg_imm (code, X86_CMP, ins->sreg1, 0);
4492 EMIT_COND_SYSTEM_EXCEPTION (X86_CC_LT, TRUE, "OverflowException");
4493 amd64_mov_reg_reg (code, ins->dreg, ins->sreg1, 8);
4495 case OP_LCONV_TO_OVF_I4_UN:
4496 amd64_alu_reg_imm (code, X86_CMP, ins->sreg1, 0x7fffffff);
4497 EMIT_COND_SYSTEM_EXCEPTION (X86_CC_GT, FALSE, "OverflowException");
4498 amd64_mov_reg_reg (code, ins->dreg, ins->sreg1, 8);
4501 if (ins->dreg != ins->sreg1)
4502 amd64_sse_movsd_reg_reg (code, ins->dreg, ins->sreg1);
4505 amd64_sse_addsd_reg_reg (code, ins->dreg, ins->sreg2);
4508 amd64_sse_subsd_reg_reg (code, ins->dreg, ins->sreg2);
4511 amd64_sse_mulsd_reg_reg (code, ins->dreg, ins->sreg2);
4514 amd64_sse_divsd_reg_reg (code, ins->dreg, ins->sreg2);
4517 static double r8_0 = -0.0;
4519 g_assert (ins->sreg1 == ins->dreg);
4521 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_R8, &r8_0);
4522 amd64_sse_xorpd_reg_membase (code, ins->dreg, AMD64_RIP, 0);
4526 EMIT_SSE2_FPFUNC (code, fsin, ins->dreg, ins->sreg1);
4529 EMIT_SSE2_FPFUNC (code, fcos, ins->dreg, ins->sreg1);
4532 static guint64 d = 0x7fffffffffffffffUL;
4534 g_assert (ins->sreg1 == ins->dreg);
4536 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_R8, &d);
4537 amd64_sse_andpd_reg_membase (code, ins->dreg, AMD64_RIP, 0);
4541 EMIT_SSE2_FPFUNC (code, fsqrt, ins->dreg, ins->sreg1);
4544 g_assert (cfg->opt & MONO_OPT_CMOV);
4545 g_assert (ins->dreg == ins->sreg1);
4546 amd64_alu_reg_reg_size (code, X86_CMP, ins->sreg1, ins->sreg2, 4);
4547 amd64_cmov_reg_size (code, X86_CC_GT, TRUE, ins->dreg, ins->sreg2, 4);
4550 g_assert (cfg->opt & MONO_OPT_CMOV);
4551 g_assert (ins->dreg == ins->sreg1);
4552 amd64_alu_reg_reg_size (code, X86_CMP, ins->sreg1, ins->sreg2, 4);
4553 amd64_cmov_reg_size (code, X86_CC_GT, FALSE, ins->dreg, ins->sreg2, 4);
4556 g_assert (cfg->opt & MONO_OPT_CMOV);
4557 g_assert (ins->dreg == ins->sreg1);
4558 amd64_alu_reg_reg_size (code, X86_CMP, ins->sreg1, ins->sreg2, 4);
4559 amd64_cmov_reg_size (code, X86_CC_LT, TRUE, ins->dreg, ins->sreg2, 4);
4562 g_assert (cfg->opt & MONO_OPT_CMOV);
4563 g_assert (ins->dreg == ins->sreg1);
4564 amd64_alu_reg_reg_size (code, X86_CMP, ins->sreg1, ins->sreg2, 4);
4565 amd64_cmov_reg_size (code, X86_CC_LT, FALSE, ins->dreg, ins->sreg2, 4);
4568 g_assert (cfg->opt & MONO_OPT_CMOV);
4569 g_assert (ins->dreg == ins->sreg1);
4570 amd64_alu_reg_reg (code, X86_CMP, ins->sreg1, ins->sreg2);
4571 amd64_cmov_reg (code, X86_CC_GT, TRUE, ins->dreg, ins->sreg2);
4574 g_assert (cfg->opt & MONO_OPT_CMOV);
4575 g_assert (ins->dreg == ins->sreg1);
4576 amd64_alu_reg_reg (code, X86_CMP, ins->sreg1, ins->sreg2);
4577 amd64_cmov_reg (code, X86_CC_GT, FALSE, ins->dreg, ins->sreg2);
4580 g_assert (cfg->opt & MONO_OPT_CMOV);
4581 g_assert (ins->dreg == ins->sreg1);
4582 amd64_alu_reg_reg (code, X86_CMP, ins->sreg1, ins->sreg2);
4583 amd64_cmov_reg (code, X86_CC_LT, TRUE, ins->dreg, ins->sreg2);
4586 g_assert (cfg->opt & MONO_OPT_CMOV);
4587 g_assert (ins->dreg == ins->sreg1);
4588 amd64_alu_reg_reg (code, X86_CMP, ins->sreg1, ins->sreg2);
4589 amd64_cmov_reg (code, X86_CC_LT, FALSE, ins->dreg, ins->sreg2);
4595 * The two arguments are swapped because the fbranch instructions
4596 * depend on this for the non-sse case to work.
4598 amd64_sse_comisd_reg_reg (code, ins->sreg2, ins->sreg1);
4601 /* zeroing the register at the start results in
4602 * shorter and faster code (we can also remove the widening op)
4604 guchar *unordered_check;
4605 amd64_alu_reg_reg (code, X86_XOR, ins->dreg, ins->dreg);
4606 amd64_sse_comisd_reg_reg (code, ins->sreg1, ins->sreg2);
4607 unordered_check = code;
4608 x86_branch8 (code, X86_CC_P, 0, FALSE);
4609 amd64_set_reg (code, X86_CC_EQ, ins->dreg, FALSE);
4610 amd64_patch (unordered_check, code);
4615 /* zeroing the register at the start results in
4616 * shorter and faster code (we can also remove the widening op)
4618 amd64_alu_reg_reg (code, X86_XOR, ins->dreg, ins->dreg);
4619 amd64_sse_comisd_reg_reg (code, ins->sreg2, ins->sreg1);
4620 if (ins->opcode == OP_FCLT_UN) {
4621 guchar *unordered_check = code;
4622 guchar *jump_to_end;
4623 x86_branch8 (code, X86_CC_P, 0, FALSE);
4624 amd64_set_reg (code, X86_CC_GT, ins->dreg, FALSE);
4626 x86_jump8 (code, 0);
4627 amd64_patch (unordered_check, code);
4628 amd64_inc_reg (code, ins->dreg);
4629 amd64_patch (jump_to_end, code);
4631 amd64_set_reg (code, X86_CC_GT, ins->dreg, FALSE);
4636 /* zeroing the register at the start results in
4637 * shorter and faster code (we can also remove the widening op)
4639 guchar *unordered_check;
4640 amd64_alu_reg_reg (code, X86_XOR, ins->dreg, ins->dreg);
4641 amd64_sse_comisd_reg_reg (code, ins->sreg2, ins->sreg1);
4642 if (ins->opcode == OP_FCGT) {
4643 unordered_check = code;
4644 x86_branch8 (code, X86_CC_P, 0, FALSE);
4645 amd64_set_reg (code, X86_CC_LT, ins->dreg, FALSE);
4646 amd64_patch (unordered_check, code);
4648 amd64_set_reg (code, X86_CC_LT, ins->dreg, FALSE);
4652 case OP_FCLT_MEMBASE:
4653 case OP_FCGT_MEMBASE:
4654 case OP_FCLT_UN_MEMBASE:
4655 case OP_FCGT_UN_MEMBASE:
4656 case OP_FCEQ_MEMBASE: {
4657 guchar *unordered_check, *jump_to_end;
4660 amd64_alu_reg_reg (code, X86_XOR, ins->dreg, ins->dreg);
4661 amd64_sse_comisd_reg_membase (code, ins->sreg1, ins->sreg2, ins->inst_offset);
4663 switch (ins->opcode) {
4664 case OP_FCEQ_MEMBASE:
4665 x86_cond = X86_CC_EQ;
4667 case OP_FCLT_MEMBASE:
4668 case OP_FCLT_UN_MEMBASE:
4669 x86_cond = X86_CC_LT;
4671 case OP_FCGT_MEMBASE:
4672 case OP_FCGT_UN_MEMBASE:
4673 x86_cond = X86_CC_GT;
4676 g_assert_not_reached ();
4679 unordered_check = code;
4680 x86_branch8 (code, X86_CC_P, 0, FALSE);
4681 amd64_set_reg (code, x86_cond, ins->dreg, FALSE);
4683 switch (ins->opcode) {
4684 case OP_FCEQ_MEMBASE:
4685 case OP_FCLT_MEMBASE:
4686 case OP_FCGT_MEMBASE:
4687 amd64_patch (unordered_check, code);
4689 case OP_FCLT_UN_MEMBASE:
4690 case OP_FCGT_UN_MEMBASE:
4692 x86_jump8 (code, 0);
4693 amd64_patch (unordered_check, code);
4694 amd64_inc_reg (code, ins->dreg);
4695 amd64_patch (jump_to_end, code);
4703 guchar *jump = code;
4704 x86_branch8 (code, X86_CC_P, 0, TRUE);
4705 EMIT_COND_BRANCH (ins, X86_CC_EQ, FALSE);
4706 amd64_patch (jump, code);
4710 /* Branch if C013 != 100 */
4711 /* branch if !ZF or (PF|CF) */
4712 EMIT_COND_BRANCH (ins, X86_CC_NE, FALSE);
4713 EMIT_COND_BRANCH (ins, X86_CC_P, FALSE);
4714 EMIT_COND_BRANCH (ins, X86_CC_B, FALSE);
4717 EMIT_COND_BRANCH (ins, X86_CC_GT, FALSE);
4720 EMIT_COND_BRANCH (ins, X86_CC_P, FALSE);
4721 EMIT_COND_BRANCH (ins, X86_CC_GT, FALSE);
4725 if (ins->opcode == OP_FBGT) {
4728 /* skip branch if C1=1 */
4730 x86_branch8 (code, X86_CC_P, 0, FALSE);
4731 /* branch if (C0 | C3) = 1 */
4732 EMIT_COND_BRANCH (ins, X86_CC_LT, FALSE);
4733 amd64_patch (br1, code);
4736 EMIT_COND_BRANCH (ins, X86_CC_LT, FALSE);
4740 /* Branch if C013 == 100 or 001 */
4743 /* skip branch if C1=1 */
4745 x86_branch8 (code, X86_CC_P, 0, FALSE);
4746 /* branch if (C0 | C3) = 1 */
4747 EMIT_COND_BRANCH (ins, X86_CC_BE, FALSE);
4748 amd64_patch (br1, code);
4752 /* Branch if C013 == 000 */
4753 EMIT_COND_BRANCH (ins, X86_CC_LE, FALSE);
4756 /* Branch if C013=000 or 100 */
4759 /* skip branch if C1=1 */
4761 x86_branch8 (code, X86_CC_P, 0, FALSE);
4762 /* branch if C0=0 */
4763 EMIT_COND_BRANCH (ins, X86_CC_NB, FALSE);
4764 amd64_patch (br1, code);
4768 /* Branch if C013 != 001 */
4769 EMIT_COND_BRANCH (ins, X86_CC_P, FALSE);
4770 EMIT_COND_BRANCH (ins, X86_CC_GE, FALSE);
4773 /* Transfer value to the fp stack */
4774 amd64_alu_reg_imm (code, X86_SUB, AMD64_RSP, 16);
4775 amd64_movsd_membase_reg (code, AMD64_RSP, 0, ins->sreg1);
4776 amd64_fld_membase (code, AMD64_RSP, 0, TRUE);
4778 amd64_push_reg (code, AMD64_RAX);
4780 amd64_fnstsw (code);
4781 amd64_alu_reg_imm (code, X86_AND, AMD64_RAX, 0x4100);
4782 amd64_alu_reg_imm (code, X86_CMP, AMD64_RAX, X86_FP_C0);
4783 amd64_pop_reg (code, AMD64_RAX);
4784 amd64_fstp (code, 0);
4785 EMIT_COND_SYSTEM_EXCEPTION (X86_CC_EQ, FALSE, "ArithmeticException");
4786 amd64_alu_reg_imm (code, X86_ADD, AMD64_RSP, 16);
4789 code = mono_amd64_emit_tls_get (code, ins->dreg, ins->inst_offset);
4792 case OP_MEMORY_BARRIER: {
4793 /* Not needed on amd64 */
4796 case OP_ATOMIC_ADD_I4:
4797 case OP_ATOMIC_ADD_I8: {
4798 int dreg = ins->dreg;
4799 guint32 size = (ins->opcode == OP_ATOMIC_ADD_I4) ? 4 : 8;
4801 if (dreg == ins->inst_basereg)
4804 if (dreg != ins->sreg2)
4805 amd64_mov_reg_reg (code, ins->dreg, ins->sreg2, size);
4807 x86_prefix (code, X86_LOCK_PREFIX);
4808 amd64_xadd_membase_reg (code, ins->inst_basereg, ins->inst_offset, dreg, size);
4810 if (dreg != ins->dreg)
4811 amd64_mov_reg_reg (code, ins->dreg, dreg, size);
4815 case OP_ATOMIC_ADD_NEW_I4:
4816 case OP_ATOMIC_ADD_NEW_I8: {
4817 int dreg = ins->dreg;
4818 guint32 size = (ins->opcode == OP_ATOMIC_ADD_NEW_I4) ? 4 : 8;
4820 if ((dreg == ins->sreg2) || (dreg == ins->inst_basereg))
4823 amd64_mov_reg_reg (code, dreg, ins->sreg2, size);
4824 amd64_prefix (code, X86_LOCK_PREFIX);
4825 amd64_xadd_membase_reg (code, ins->inst_basereg, ins->inst_offset, dreg, size);
4826 /* dreg contains the old value, add with sreg2 value */
4827 amd64_alu_reg_reg_size (code, X86_ADD, dreg, ins->sreg2, size);
4829 if (ins->dreg != dreg)
4830 amd64_mov_reg_reg (code, ins->dreg, dreg, size);
4834 case OP_ATOMIC_EXCHANGE_I4:
4835 case OP_ATOMIC_EXCHANGE_I8: {
4837 int sreg2 = ins->sreg2;
4838 int breg = ins->inst_basereg;
4840 gboolean need_push = FALSE, rdx_pushed = FALSE;
4842 if (ins->opcode == OP_ATOMIC_EXCHANGE_I8)
4848 * See http://msdn.microsoft.com/en-us/magazine/cc302329.aspx for
4849 * an explanation of how this works.
4852 /* cmpxchg uses eax as comperand, need to make sure we can use it
4853 * hack to overcome limits in x86 reg allocator
4854 * (req: dreg == eax and sreg2 != eax and breg != eax)
4856 g_assert (ins->dreg == AMD64_RAX);
4858 if (breg == AMD64_RAX && ins->sreg2 == AMD64_RAX)
4859 /* Highly unlikely, but possible */
4862 /* The pushes invalidate rsp */
4863 if ((breg == AMD64_RAX) || need_push) {
4864 amd64_mov_reg_reg (code, AMD64_R11, breg, 8);
4868 /* We need the EAX reg for the comparand */
4869 if (ins->sreg2 == AMD64_RAX) {
4870 if (breg != AMD64_R11) {
4871 amd64_mov_reg_reg (code, AMD64_R11, AMD64_RAX, 8);
4874 g_assert (need_push);
4875 amd64_push_reg (code, AMD64_RDX);
4876 amd64_mov_reg_reg (code, AMD64_RDX, AMD64_RAX, size);
4882 amd64_mov_reg_membase (code, AMD64_RAX, breg, ins->inst_offset, size);
4884 br [0] = code; amd64_prefix (code, X86_LOCK_PREFIX);
4885 amd64_cmpxchg_membase_reg_size (code, breg, ins->inst_offset, sreg2, size);
4886 br [1] = code; amd64_branch8 (code, X86_CC_NE, -1, FALSE);
4887 amd64_patch (br [1], br [0]);
4890 amd64_pop_reg (code, AMD64_RDX);
4894 case OP_ATOMIC_CAS_I4:
4895 case OP_ATOMIC_CAS_I8: {
4898 if (ins->opcode == OP_ATOMIC_CAS_I8)
4904 * See http://msdn.microsoft.com/en-us/magazine/cc302329.aspx for
4905 * an explanation of how this works.
4907 g_assert (ins->sreg3 == AMD64_RAX);
4908 g_assert (ins->sreg1 != AMD64_RAX);
4909 g_assert (ins->sreg1 != ins->sreg2);
4911 amd64_prefix (code, X86_LOCK_PREFIX);
4912 amd64_cmpxchg_membase_reg_size (code, ins->sreg1, ins->inst_offset, ins->sreg2, size);
4914 if (ins->dreg != AMD64_RAX)
4915 amd64_mov_reg_reg (code, ins->dreg, AMD64_RAX, size);
4918 #ifdef MONO_ARCH_SIMD_INTRINSICS
4919 /* TODO: Some of these IR opcodes are marked as no clobber when they indeed do. */
4921 amd64_sse_addps_reg_reg (code, ins->sreg1, ins->sreg2);
4924 amd64_sse_divps_reg_reg (code, ins->sreg1, ins->sreg2);
4927 amd64_sse_mulps_reg_reg (code, ins->sreg1, ins->sreg2);
4930 amd64_sse_subps_reg_reg (code, ins->sreg1, ins->sreg2);
4933 amd64_sse_maxps_reg_reg (code, ins->sreg1, ins->sreg2);
4936 amd64_sse_minps_reg_reg (code, ins->sreg1, ins->sreg2);
4939 g_assert (ins->inst_c0 >= 0 && ins->inst_c0 <= 7);
4940 amd64_sse_cmpps_reg_reg_imm (code, ins->sreg1, ins->sreg2, ins->inst_c0);
4943 amd64_sse_andps_reg_reg (code, ins->sreg1, ins->sreg2);
4946 amd64_sse_andnps_reg_reg (code, ins->sreg1, ins->sreg2);
4949 amd64_sse_orps_reg_reg (code, ins->sreg1, ins->sreg2);
4952 amd64_sse_xorps_reg_reg (code, ins->sreg1, ins->sreg2);
4955 amd64_sse_sqrtps_reg_reg (code, ins->dreg, ins->sreg1);
4958 amd64_sse_rsqrtps_reg_reg (code, ins->dreg, ins->sreg1);
4961 amd64_sse_rcpps_reg_reg (code, ins->dreg, ins->sreg1);
4964 amd64_sse_addsubps_reg_reg (code, ins->sreg1, ins->sreg2);
4967 amd64_sse_haddps_reg_reg (code, ins->sreg1, ins->sreg2);
4970 amd64_sse_hsubps_reg_reg (code, ins->sreg1, ins->sreg2);
4973 amd64_sse_movshdup_reg_reg (code, ins->dreg, ins->sreg1);
4976 amd64_sse_movsldup_reg_reg (code, ins->dreg, ins->sreg1);
4979 case OP_PSHUFLEW_HIGH:
4980 g_assert (ins->inst_c0 >= 0 && ins->inst_c0 <= 0xFF);
4981 amd64_sse_pshufhw_reg_reg_imm (code, ins->dreg, ins->sreg1, ins->inst_c0);
4983 case OP_PSHUFLEW_LOW:
4984 g_assert (ins->inst_c0 >= 0 && ins->inst_c0 <= 0xFF);
4985 amd64_sse_pshuflw_reg_reg_imm (code, ins->dreg, ins->sreg1, ins->inst_c0);
4988 g_assert (ins->inst_c0 >= 0 && ins->inst_c0 <= 0xFF);
4989 amd64_sse_pshufd_reg_reg_imm (code, ins->dreg, ins->sreg1, ins->inst_c0);
4993 amd64_sse_addpd_reg_reg (code, ins->sreg1, ins->sreg2);
4996 amd64_sse_divpd_reg_reg (code, ins->sreg1, ins->sreg2);
4999 amd64_sse_mulpd_reg_reg (code, ins->sreg1, ins->sreg2);
5002 amd64_sse_subpd_reg_reg (code, ins->sreg1, ins->sreg2);
5005 amd64_sse_maxpd_reg_reg (code, ins->sreg1, ins->sreg2);
5008 amd64_sse_minpd_reg_reg (code, ins->sreg1, ins->sreg2);
5011 g_assert (ins->inst_c0 >= 0 && ins->inst_c0 <= 7);
5012 amd64_sse_cmppd_reg_reg_imm (code, ins->sreg1, ins->sreg2, ins->inst_c0);
5015 amd64_sse_andpd_reg_reg (code, ins->sreg1, ins->sreg2);
5018 amd64_sse_andnpd_reg_reg (code, ins->sreg1, ins->sreg2);
5021 amd64_sse_orpd_reg_reg (code, ins->sreg1, ins->sreg2);
5024 amd64_sse_xorpd_reg_reg (code, ins->sreg1, ins->sreg2);
5027 amd64_sse_sqrtpd_reg_reg (code, ins->dreg, ins->sreg1);
5030 amd64_sse_addsubpd_reg_reg (code, ins->sreg1, ins->sreg2);
5033 amd64_sse_haddpd_reg_reg (code, ins->sreg1, ins->sreg2);
5036 amd64_sse_hsubpd_reg_reg (code, ins->sreg1, ins->sreg2);
5039 amd64_sse_movddup_reg_reg (code, ins->dreg, ins->sreg1);
5042 case OP_EXTRACT_MASK:
5043 amd64_sse_pmovmskb_reg_reg (code, ins->dreg, ins->sreg1);
5047 amd64_sse_pand_reg_reg (code, ins->sreg1, ins->sreg2);
5050 amd64_sse_por_reg_reg (code, ins->sreg1, ins->sreg2);
5053 amd64_sse_pxor_reg_reg (code, ins->sreg1, ins->sreg2);
5057 amd64_sse_paddb_reg_reg (code, ins->sreg1, ins->sreg2);
5060 amd64_sse_paddw_reg_reg (code, ins->sreg1, ins->sreg2);
5063 amd64_sse_paddd_reg_reg (code, ins->sreg1, ins->sreg2);
5066 amd64_sse_paddq_reg_reg (code, ins->sreg1, ins->sreg2);
5070 amd64_sse_psubb_reg_reg (code, ins->sreg1, ins->sreg2);
5073 amd64_sse_psubw_reg_reg (code, ins->sreg1, ins->sreg2);
5076 amd64_sse_psubd_reg_reg (code, ins->sreg1, ins->sreg2);
5079 amd64_sse_psubq_reg_reg (code, ins->sreg1, ins->sreg2);
5083 amd64_sse_pmaxub_reg_reg (code, ins->sreg1, ins->sreg2);
5086 amd64_sse_pmaxuw_reg_reg (code, ins->sreg1, ins->sreg2);
5089 amd64_sse_pmaxud_reg_reg (code, ins->sreg1, ins->sreg2);
5093 amd64_sse_pmaxsb_reg_reg (code, ins->sreg1, ins->sreg2);
5096 amd64_sse_pmaxsw_reg_reg (code, ins->sreg1, ins->sreg2);
5099 amd64_sse_pmaxsd_reg_reg (code, ins->sreg1, ins->sreg2);
5103 amd64_sse_pavgb_reg_reg (code, ins->sreg1, ins->sreg2);
5106 amd64_sse_pavgw_reg_reg (code, ins->sreg1, ins->sreg2);
5110 amd64_sse_pminub_reg_reg (code, ins->sreg1, ins->sreg2);
5113 amd64_sse_pminuw_reg_reg (code, ins->sreg1, ins->sreg2);
5116 amd64_sse_pminud_reg_reg (code, ins->sreg1, ins->sreg2);
5120 amd64_sse_pminsb_reg_reg (code, ins->sreg1, ins->sreg2);
5123 amd64_sse_pminsw_reg_reg (code, ins->sreg1, ins->sreg2);
5126 amd64_sse_pminsd_reg_reg (code, ins->sreg1, ins->sreg2);
5130 amd64_sse_pcmpeqb_reg_reg (code, ins->sreg1, ins->sreg2);
5133 amd64_sse_pcmpeqw_reg_reg (code, ins->sreg1, ins->sreg2);
5136 amd64_sse_pcmpeqd_reg_reg (code, ins->sreg1, ins->sreg2);
5139 amd64_sse_pcmpeqq_reg_reg (code, ins->sreg1, ins->sreg2);
5143 amd64_sse_pcmpgtb_reg_reg (code, ins->sreg1, ins->sreg2);
5146 amd64_sse_pcmpgtw_reg_reg (code, ins->sreg1, ins->sreg2);
5149 amd64_sse_pcmpgtd_reg_reg (code, ins->sreg1, ins->sreg2);
5152 amd64_sse_pcmpgtq_reg_reg (code, ins->sreg1, ins->sreg2);
5155 case OP_PSUM_ABS_DIFF:
5156 amd64_sse_psadbw_reg_reg (code, ins->sreg1, ins->sreg2);
5159 case OP_UNPACK_LOWB:
5160 amd64_sse_punpcklbw_reg_reg (code, ins->sreg1, ins->sreg2);
5162 case OP_UNPACK_LOWW:
5163 amd64_sse_punpcklwd_reg_reg (code, ins->sreg1, ins->sreg2);
5165 case OP_UNPACK_LOWD:
5166 amd64_sse_punpckldq_reg_reg (code, ins->sreg1, ins->sreg2);
5168 case OP_UNPACK_LOWQ:
5169 amd64_sse_punpcklqdq_reg_reg (code, ins->sreg1, ins->sreg2);
5171 case OP_UNPACK_LOWPS:
5172 amd64_sse_unpcklps_reg_reg (code, ins->sreg1, ins->sreg2);
5174 case OP_UNPACK_LOWPD:
5175 amd64_sse_unpcklpd_reg_reg (code, ins->sreg1, ins->sreg2);
5178 case OP_UNPACK_HIGHB:
5179 amd64_sse_punpckhbw_reg_reg (code, ins->sreg1, ins->sreg2);
5181 case OP_UNPACK_HIGHW:
5182 amd64_sse_punpckhwd_reg_reg (code, ins->sreg1, ins->sreg2);
5184 case OP_UNPACK_HIGHD:
5185 amd64_sse_punpckhdq_reg_reg (code, ins->sreg1, ins->sreg2);
5187 case OP_UNPACK_HIGHQ:
5188 amd64_sse_punpckhqdq_reg_reg (code, ins->sreg1, ins->sreg2);
5190 case OP_UNPACK_HIGHPS:
5191 amd64_sse_unpckhps_reg_reg (code, ins->sreg1, ins->sreg2);
5193 case OP_UNPACK_HIGHPD:
5194 amd64_sse_unpckhpd_reg_reg (code, ins->sreg1, ins->sreg2);
5198 amd64_sse_packsswb_reg_reg (code, ins->sreg1, ins->sreg2);
5201 amd64_sse_packssdw_reg_reg (code, ins->sreg1, ins->sreg2);
5204 amd64_sse_packuswb_reg_reg (code, ins->sreg1, ins->sreg2);
5207 amd64_sse_packusdw_reg_reg (code, ins->sreg1, ins->sreg2);
5210 case OP_PADDB_SAT_UN:
5211 amd64_sse_paddusb_reg_reg (code, ins->sreg1, ins->sreg2);
5213 case OP_PSUBB_SAT_UN:
5214 amd64_sse_psubusb_reg_reg (code, ins->sreg1, ins->sreg2);
5216 case OP_PADDW_SAT_UN:
5217 amd64_sse_paddusw_reg_reg (code, ins->sreg1, ins->sreg2);
5219 case OP_PSUBW_SAT_UN:
5220 amd64_sse_psubusw_reg_reg (code, ins->sreg1, ins->sreg2);
5224 amd64_sse_paddsb_reg_reg (code, ins->sreg1, ins->sreg2);
5227 amd64_sse_psubsb_reg_reg (code, ins->sreg1, ins->sreg2);
5230 amd64_sse_paddsw_reg_reg (code, ins->sreg1, ins->sreg2);
5233 amd64_sse_psubsw_reg_reg (code, ins->sreg1, ins->sreg2);
5237 amd64_sse_pmullw_reg_reg (code, ins->sreg1, ins->sreg2);
5240 amd64_sse_pmulld_reg_reg (code, ins->sreg1, ins->sreg2);
5243 amd64_sse_pmuludq_reg_reg (code, ins->sreg1, ins->sreg2);
5245 case OP_PMULW_HIGH_UN:
5246 amd64_sse_pmulhuw_reg_reg (code, ins->sreg1, ins->sreg2);
5249 amd64_sse_pmulhw_reg_reg (code, ins->sreg1, ins->sreg2);
5253 amd64_sse_psrlw_reg_imm (code, ins->dreg, ins->inst_imm);
5256 amd64_sse_psrlw_reg_reg (code, ins->dreg, ins->sreg2);
5260 amd64_sse_psraw_reg_imm (code, ins->dreg, ins->inst_imm);
5263 amd64_sse_psraw_reg_reg (code, ins->dreg, ins->sreg2);
5267 amd64_sse_psllw_reg_imm (code, ins->dreg, ins->inst_imm);
5270 amd64_sse_psllw_reg_reg (code, ins->dreg, ins->sreg2);
5274 amd64_sse_psrld_reg_imm (code, ins->dreg, ins->inst_imm);
5277 amd64_sse_psrld_reg_reg (code, ins->dreg, ins->sreg2);
5281 amd64_sse_psrad_reg_imm (code, ins->dreg, ins->inst_imm);
5284 amd64_sse_psrad_reg_reg (code, ins->dreg, ins->sreg2);
5288 amd64_sse_pslld_reg_imm (code, ins->dreg, ins->inst_imm);
5291 amd64_sse_pslld_reg_reg (code, ins->dreg, ins->sreg2);
5295 amd64_sse_psrlq_reg_imm (code, ins->dreg, ins->inst_imm);
5298 amd64_sse_psrlq_reg_reg (code, ins->dreg, ins->sreg2);
5301 /*TODO: This is appart of the sse spec but not added
5303 amd64_sse_psraq_reg_imm (code, ins->dreg, ins->inst_imm);
5306 amd64_sse_psraq_reg_reg (code, ins->dreg, ins->sreg2);
5311 amd64_sse_psllq_reg_imm (code, ins->dreg, ins->inst_imm);
5314 amd64_sse_psllq_reg_reg (code, ins->dreg, ins->sreg2);
5318 amd64_movd_xreg_reg_size (code, ins->dreg, ins->sreg1, 4);
5321 amd64_movd_reg_xreg_size (code, ins->dreg, ins->sreg1, 4);
5325 amd64_movhlps_reg_reg (code, AMD64_XMM15, ins->sreg1);
5326 amd64_movd_reg_xreg_size (code, ins->dreg, AMD64_XMM15, 8);
5328 amd64_movd_reg_xreg_size (code, ins->dreg, ins->sreg1, 8);
5333 amd64_movd_reg_xreg_size (code, ins->dreg, ins->sreg1, 4);
5335 amd64_shift_reg_imm (code, X86_SHR, ins->dreg, ins->inst_c0 * 8);
5336 amd64_widen_reg (code, ins->dreg, ins->dreg, ins->opcode == OP_EXTRACT_I1, FALSE);
5340 /*amd64_movd_reg_xreg_size (code, ins->dreg, ins->sreg1, 4);
5342 amd64_shift_reg_imm_size (code, X86_SHR, ins->dreg, 16, 4);*/
5343 amd64_sse_pextrw_reg_reg_imm (code, ins->dreg, ins->sreg1, ins->inst_c0);
5344 amd64_widen_reg_size (code, ins->dreg, ins->dreg, ins->opcode == OP_EXTRACT_I2, TRUE, 4);
5348 amd64_movhlps_reg_reg (code, ins->dreg, ins->sreg1);
5350 amd64_sse_movsd_reg_reg (code, ins->dreg, ins->sreg1);
5353 amd64_sse_pinsrw_reg_reg_imm (code, ins->sreg1, ins->sreg2, ins->inst_c0);
5355 case OP_EXTRACTX_U2:
5356 amd64_sse_pextrw_reg_reg_imm (code, ins->dreg, ins->sreg1, ins->inst_c0);
5358 case OP_INSERTX_U1_SLOW:
5359 /*sreg1 is the extracted ireg (scratch)
5360 /sreg2 is the to be inserted ireg (scratch)
5361 /dreg is the xreg to receive the value*/
5363 /*clear the bits from the extracted word*/
5364 amd64_alu_reg_imm (code, X86_AND, ins->sreg1, ins->inst_c0 & 1 ? 0x00FF : 0xFF00);
5365 /*shift the value to insert if needed*/
5366 if (ins->inst_c0 & 1)
5367 amd64_shift_reg_imm_size (code, X86_SHL, ins->sreg2, 8, 4);
5368 /*join them together*/
5369 amd64_alu_reg_reg (code, X86_OR, ins->sreg1, ins->sreg2);
5370 amd64_sse_pinsrw_reg_reg_imm (code, ins->dreg, ins->sreg1, ins->inst_c0 / 2);
5372 case OP_INSERTX_I4_SLOW:
5373 amd64_sse_pinsrw_reg_reg_imm (code, ins->dreg, ins->sreg2, ins->inst_c0 * 2);
5374 amd64_shift_reg_imm (code, X86_SHR, ins->sreg2, 16);
5375 amd64_sse_pinsrw_reg_reg_imm (code, ins->dreg, ins->sreg2, ins->inst_c0 * 2 + 1);
5377 case OP_INSERTX_I8_SLOW:
5378 amd64_movd_xreg_reg_size(code, AMD64_XMM15, ins->sreg2, 8);
5380 amd64_movlhps_reg_reg (code, ins->dreg, AMD64_XMM15);
5382 amd64_sse_movsd_reg_reg (code, ins->dreg, AMD64_XMM15);
5385 case OP_INSERTX_R4_SLOW:
5386 switch (ins->inst_c0) {
5388 amd64_sse_cvtsd2ss_reg_reg (code, ins->dreg, ins->sreg2);
5391 amd64_sse_pshufd_reg_reg_imm (code, ins->dreg, ins->dreg, mono_simd_shuffle_mask(1, 0, 2, 3));
5392 amd64_sse_cvtsd2ss_reg_reg (code, ins->dreg, ins->sreg2);
5393 amd64_sse_pshufd_reg_reg_imm (code, ins->dreg, ins->dreg, mono_simd_shuffle_mask(1, 0, 2, 3));
5396 amd64_sse_pshufd_reg_reg_imm (code, ins->dreg, ins->dreg, mono_simd_shuffle_mask(2, 1, 0, 3));
5397 amd64_sse_cvtsd2ss_reg_reg (code, ins->dreg, ins->sreg2);
5398 amd64_sse_pshufd_reg_reg_imm (code, ins->dreg, ins->dreg, mono_simd_shuffle_mask(2, 1, 0, 3));
5401 amd64_sse_pshufd_reg_reg_imm (code, ins->dreg, ins->dreg, mono_simd_shuffle_mask(3, 1, 2, 0));
5402 amd64_sse_cvtsd2ss_reg_reg (code, ins->dreg, ins->sreg2);
5403 amd64_sse_pshufd_reg_reg_imm (code, ins->dreg, ins->dreg, mono_simd_shuffle_mask(3, 1, 2, 0));
5407 case OP_INSERTX_R8_SLOW:
5409 amd64_movlhps_reg_reg (code, ins->dreg, ins->sreg2);
5411 amd64_sse_movsd_reg_reg (code, ins->dreg, ins->sreg2);
5413 case OP_STOREX_MEMBASE_REG:
5414 case OP_STOREX_MEMBASE:
5415 amd64_sse_movups_membase_reg (code, ins->dreg, ins->inst_offset, ins->sreg1);
5417 case OP_LOADX_MEMBASE:
5418 amd64_sse_movups_reg_membase (code, ins->dreg, ins->sreg1, ins->inst_offset);
5420 case OP_LOADX_ALIGNED_MEMBASE:
5421 amd64_sse_movaps_reg_membase (code, ins->dreg, ins->sreg1, ins->inst_offset);
5423 case OP_STOREX_ALIGNED_MEMBASE_REG:
5424 amd64_sse_movaps_membase_reg (code, ins->dreg, ins->inst_offset, ins->sreg1);
5426 case OP_STOREX_NTA_MEMBASE_REG:
5427 amd64_sse_movntps_reg_membase (code, ins->dreg, ins->sreg1, ins->inst_offset);
5429 case OP_PREFETCH_MEMBASE:
5430 amd64_sse_prefetch_reg_membase (code, ins->backend.arg_info, ins->sreg1, ins->inst_offset);
5434 /*FIXME the peephole pass should have killed this*/
5435 if (ins->dreg != ins->sreg1)
5436 amd64_sse_movaps_reg_reg (code, ins->dreg, ins->sreg1);
5439 amd64_sse_pxor_reg_reg (code, ins->dreg, ins->dreg);
5441 case OP_ICONV_TO_R8_RAW:
5442 amd64_movd_xreg_reg_size (code, ins->dreg, ins->sreg1, 4);
5443 amd64_sse_cvtss2sd_reg_reg (code, ins->dreg, ins->dreg);
5446 case OP_FCONV_TO_R8_X:
5447 amd64_sse_movsd_reg_reg (code, ins->dreg, ins->sreg1);
5450 case OP_XCONV_R8_TO_I4:
5451 amd64_sse_cvttsd2si_reg_xreg_size (code, ins->dreg, ins->sreg1, 4);
5452 switch (ins->backend.source_opcode) {
5453 case OP_FCONV_TO_I1:
5454 amd64_widen_reg (code, ins->dreg, ins->dreg, TRUE, FALSE);
5456 case OP_FCONV_TO_U1:
5457 amd64_widen_reg (code, ins->dreg, ins->dreg, FALSE, FALSE);
5459 case OP_FCONV_TO_I2:
5460 amd64_widen_reg (code, ins->dreg, ins->dreg, TRUE, TRUE);
5462 case OP_FCONV_TO_U2:
5463 amd64_widen_reg (code, ins->dreg, ins->dreg, FALSE, TRUE);
5469 amd64_sse_pinsrw_reg_reg_imm (code, ins->dreg, ins->sreg1, 0);
5470 amd64_sse_pinsrw_reg_reg_imm (code, ins->dreg, ins->sreg1, 1);
5471 amd64_sse_pshufd_reg_reg_imm (code, ins->dreg, ins->dreg, 0);
5474 amd64_movd_xreg_reg_size (code, ins->dreg, ins->sreg1, 4);
5475 amd64_sse_pshufd_reg_reg_imm (code, ins->dreg, ins->dreg, 0);
5478 amd64_movd_xreg_reg_size (code, ins->dreg, ins->sreg1, 8);
5479 amd64_sse_pshufd_reg_reg_imm (code, ins->dreg, ins->dreg, 0x44);
5482 amd64_sse_movsd_reg_reg (code, ins->dreg, ins->sreg1);
5483 amd64_sse_cvtsd2ss_reg_reg (code, ins->dreg, ins->dreg);
5484 amd64_sse_pshufd_reg_reg_imm (code, ins->dreg, ins->dreg, 0);
5487 amd64_sse_movsd_reg_reg (code, ins->dreg, ins->sreg1);
5488 amd64_sse_pshufd_reg_reg_imm (code, ins->dreg, ins->dreg, 0x44);
5491 case OP_LIVERANGE_START: {
5492 if (cfg->verbose_level > 1)
5493 printf ("R%d START=0x%x\n", MONO_VARINFO (cfg, ins->inst_c0)->vreg, (int)(code - cfg->native_code));
5494 MONO_VARINFO (cfg, ins->inst_c0)->live_range_start = code - cfg->native_code;
5497 case OP_LIVERANGE_END: {
5498 if (cfg->verbose_level > 1)
5499 printf ("R%d END=0x%x\n", MONO_VARINFO (cfg, ins->inst_c0)->vreg, (int)(code - cfg->native_code));
5500 MONO_VARINFO (cfg, ins->inst_c0)->live_range_end = code - cfg->native_code;
5504 g_warning ("unknown opcode %s in %s()\n", mono_inst_name (ins->opcode), __FUNCTION__);
5505 g_assert_not_reached ();
5508 if ((code - cfg->native_code - offset) > max_len) {
5509 g_warning ("wrong maximal instruction length of instruction %s (expected %d, got %ld)",
5510 mono_inst_name (ins->opcode), max_len, code - cfg->native_code - offset);
5511 g_assert_not_reached ();
5515 last_offset = offset;
5518 cfg->code_len = code - cfg->native_code;
5521 #endif /* DISABLE_JIT */
5524 mono_arch_register_lowlevel_calls (void)
5526 /* The signature doesn't matter */
5527 mono_register_jit_icall (mono_amd64_throw_exception, "mono_amd64_throw_exception", mono_create_icall_signature ("void"), TRUE);
5531 mono_arch_patch_code (MonoMethod *method, MonoDomain *domain, guint8 *code, MonoJumpInfo *ji, gboolean run_cctors)
5533 MonoJumpInfo *patch_info;
5534 gboolean compile_aot = !run_cctors;
5536 for (patch_info = ji; patch_info; patch_info = patch_info->next) {
5537 unsigned char *ip = patch_info->ip.i + code;
5538 unsigned char *target;
5540 target = mono_resolve_patch_target (method, domain, code, patch_info, run_cctors);
5543 switch (patch_info->type) {
5544 case MONO_PATCH_INFO_BB:
5545 case MONO_PATCH_INFO_LABEL:
5548 /* No need to patch these */
5553 switch (patch_info->type) {
5554 case MONO_PATCH_INFO_NONE:
5556 case MONO_PATCH_INFO_METHOD_REL:
5557 case MONO_PATCH_INFO_R8:
5558 case MONO_PATCH_INFO_R4:
5559 g_assert_not_reached ();
5561 case MONO_PATCH_INFO_BB:
5568 * Debug code to help track down problems where the target of a near call is
5571 if (amd64_is_near_call (ip)) {
5572 gint64 disp = (guint8*)target - (guint8*)ip;
5574 if (!amd64_is_imm32 (disp)) {
5575 printf ("TYPE: %d\n", patch_info->type);
5576 switch (patch_info->type) {
5577 case MONO_PATCH_INFO_INTERNAL_METHOD:
5578 printf ("V: %s\n", patch_info->data.name);
5580 case MONO_PATCH_INFO_METHOD_JUMP:
5581 case MONO_PATCH_INFO_METHOD:
5582 printf ("V: %s\n", patch_info->data.method->name);
5590 amd64_patch (ip, (gpointer)target);
5595 get_max_epilog_size (MonoCompile *cfg)
5597 int max_epilog_size = 16;
5599 if (cfg->method->save_lmf)
5600 max_epilog_size += 256;
5602 if (mono_jit_trace_calls != NULL)
5603 max_epilog_size += 50;
5605 if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE)
5606 max_epilog_size += 50;
5608 max_epilog_size += (AMD64_NREG * 2);
5610 return max_epilog_size;
5614 * This macro is used for testing whenever the unwinder works correctly at every point
5615 * where an async exception can happen.
5617 /* This will generate a SIGSEGV at the given point in the code */
5618 #define async_exc_point(code) do { \
5619 if (mono_inject_async_exc_method && mono_method_desc_full_match (mono_inject_async_exc_method, cfg->method)) { \
5620 if (cfg->arch.async_point_count == mono_inject_async_exc_pos) \
5621 amd64_mov_reg_mem (code, AMD64_RAX, 0, 4); \
5622 cfg->arch.async_point_count ++; \
5627 mono_arch_emit_prolog (MonoCompile *cfg)
5629 MonoMethod *method = cfg->method;
5631 MonoMethodSignature *sig;
5633 int alloc_size, pos, i, cfa_offset, quad, max_epilog_size;
5636 gint32 lmf_offset = cfg->arch.lmf_offset;
5637 gboolean args_clobbered = FALSE;
5638 gboolean trace = FALSE;
5640 cfg->code_size = MAX (((MonoMethodNormal *)method)->header->code_size * 4, 10240);
5642 code = cfg->native_code = g_malloc (cfg->code_size);
5644 if (mono_jit_trace_calls != NULL && mono_trace_eval (method))
5647 /* Amount of stack space allocated by register saving code */
5650 /* Offset between RSP and the CFA */
5654 * The prolog consists of the following parts:
5656 * - push rbp, mov rbp, rsp
5657 * - save callee saved regs using pushes
5659 * - save rgctx if needed
5660 * - save lmf if needed
5663 * - save rgctx if needed
5664 * - save lmf if needed
5665 * - save callee saved regs using moves
5670 mono_emit_unwind_op_def_cfa (cfg, code, AMD64_RSP, 8);
5671 // IP saved at CFA - 8
5672 mono_emit_unwind_op_offset (cfg, code, AMD64_RIP, -cfa_offset);
5673 async_exc_point (code);
5675 if (!cfg->arch.omit_fp) {
5676 amd64_push_reg (code, AMD64_RBP);
5678 mono_emit_unwind_op_def_cfa_offset (cfg, code, cfa_offset);
5679 mono_emit_unwind_op_offset (cfg, code, AMD64_RBP, - cfa_offset);
5680 async_exc_point (code);
5682 mono_arch_unwindinfo_add_push_nonvol (&cfg->arch.unwindinfo, cfg->native_code, code, AMD64_RBP);
5685 amd64_mov_reg_reg (code, AMD64_RBP, AMD64_RSP, sizeof (gpointer));
5686 mono_emit_unwind_op_def_cfa_reg (cfg, code, AMD64_RBP);
5687 async_exc_point (code);
5689 mono_arch_unwindinfo_add_set_fpreg (&cfg->arch.unwindinfo, cfg->native_code, code, AMD64_RBP);
5693 /* Save callee saved registers */
5694 if (!cfg->arch.omit_fp && !method->save_lmf) {
5695 int offset = cfa_offset;
5697 for (i = 0; i < AMD64_NREG; ++i)
5698 if (AMD64_IS_CALLEE_SAVED_REG (i) && (cfg->used_int_regs & (1 << i))) {
5699 amd64_push_reg (code, i);
5700 pos += sizeof (gpointer);
5702 mono_emit_unwind_op_offset (cfg, code, i, - offset);
5703 async_exc_point (code);
5707 /* The param area is always at offset 0 from sp */
5708 /* This needs to be allocated here, since it has to come after the spill area */
5709 if (cfg->arch.no_pushes && cfg->param_area) {
5710 if (cfg->arch.omit_fp)
5712 g_assert_not_reached ();
5713 cfg->stack_offset += ALIGN_TO (cfg->param_area, sizeof (gpointer));
5716 if (cfg->arch.omit_fp) {
5718 * On enter, the stack is misaligned by the the pushing of the return
5719 * address. It is either made aligned by the pushing of %rbp, or by
5722 alloc_size = ALIGN_TO (cfg->stack_offset, 8);
5723 if ((alloc_size % 16) == 0)
5726 alloc_size = ALIGN_TO (cfg->stack_offset, MONO_ARCH_FRAME_ALIGNMENT);
5731 cfg->arch.stack_alloc_size = alloc_size;
5733 /* Allocate stack frame */
5735 /* See mono_emit_stack_alloc */
5736 #if defined(HOST_WIN32) || defined(MONO_ARCH_SIGSEGV_ON_ALTSTACK)
5737 guint32 remaining_size = alloc_size;
5738 /*FIXME handle unbounded code expansion, we should use a loop in case of more than X interactions*/
5739 guint32 required_code_size = ((remaining_size / 0x1000) + 1) * 10; /*10 is the max size of amd64_alu_reg_imm + amd64_test_membase_reg*/
5740 guint32 offset = code - cfg->native_code;
5741 if (G_UNLIKELY (required_code_size >= (cfg->code_size - offset))) {
5742 while (required_code_size >= (cfg->code_size - offset))
5743 cfg->code_size *= 2;
5744 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
5745 code = cfg->native_code + offset;
5746 mono_jit_stats.code_reallocs++;
5749 while (remaining_size >= 0x1000) {
5750 amd64_alu_reg_imm (code, X86_SUB, AMD64_RSP, 0x1000);
5751 if (cfg->arch.omit_fp) {
5752 cfa_offset += 0x1000;
5753 mono_emit_unwind_op_def_cfa_offset (cfg, code, cfa_offset);
5755 async_exc_point (code);
5757 if (cfg->arch.omit_fp)
5758 mono_arch_unwindinfo_add_alloc_stack (&cfg->arch.unwindinfo, cfg->native_code, code, 0x1000);
5761 amd64_test_membase_reg (code, AMD64_RSP, 0, AMD64_RSP);
5762 remaining_size -= 0x1000;
5764 if (remaining_size) {
5765 amd64_alu_reg_imm (code, X86_SUB, AMD64_RSP, remaining_size);
5766 if (cfg->arch.omit_fp) {
5767 cfa_offset += remaining_size;
5768 mono_emit_unwind_op_def_cfa_offset (cfg, code, cfa_offset);
5769 async_exc_point (code);
5772 if (cfg->arch.omit_fp)
5773 mono_arch_unwindinfo_add_alloc_stack (&cfg->arch.unwindinfo, cfg->native_code, code, remaining_size);
5777 amd64_alu_reg_imm (code, X86_SUB, AMD64_RSP, alloc_size);
5778 if (cfg->arch.omit_fp) {
5779 cfa_offset += alloc_size;
5780 mono_emit_unwind_op_def_cfa_offset (cfg, code, cfa_offset);
5781 async_exc_point (code);
5786 /* Stack alignment check */
5789 amd64_mov_reg_reg (code, AMD64_RAX, AMD64_RSP, 8);
5790 amd64_alu_reg_imm (code, X86_AND, AMD64_RAX, 0xf);
5791 amd64_alu_reg_imm (code, X86_CMP, AMD64_RAX, 0);
5792 x86_branch8 (code, X86_CC_EQ, 2, FALSE);
5793 amd64_breakpoint (code);
5798 if (method->save_lmf) {
5800 * The ip field is not set, the exception handling code will obtain it from the stack location pointed to by the sp field.
5802 /* sp is saved right before calls */
5803 /* Skip method (only needed for trampoline LMF frames) */
5804 /* Save callee saved regs */
5805 for (i = 0; i < MONO_MAX_IREGS; ++i) {
5809 case AMD64_RBX: offset = G_STRUCT_OFFSET (MonoLMF, rbx); break;
5810 case AMD64_RBP: offset = G_STRUCT_OFFSET (MonoLMF, rbp); break;
5811 case AMD64_R12: offset = G_STRUCT_OFFSET (MonoLMF, r12); break;
5812 case AMD64_R13: offset = G_STRUCT_OFFSET (MonoLMF, r13); break;
5813 case AMD64_R14: offset = G_STRUCT_OFFSET (MonoLMF, r14); break;
5814 case AMD64_R15: offset = G_STRUCT_OFFSET (MonoLMF, r15); break;
5816 case AMD64_RDI: offset = G_STRUCT_OFFSET (MonoLMF, rdi); break;
5817 case AMD64_RSI: offset = G_STRUCT_OFFSET (MonoLMF, rsi); break;
5825 amd64_mov_membase_reg (code, cfg->frame_reg, lmf_offset + offset, i, 8);
5826 if (cfg->arch.omit_fp || (i != AMD64_RBP))
5827 mono_emit_unwind_op_offset (cfg, code, i, - (cfa_offset - (lmf_offset + offset)));
5832 /* Save callee saved registers */
5833 if (cfg->arch.omit_fp && !method->save_lmf) {
5834 gint32 save_area_offset = cfg->arch.reg_save_area_offset;
5836 /* Save caller saved registers after sp is adjusted */
5837 /* The registers are saved at the bottom of the frame */
5838 /* FIXME: Optimize this so the regs are saved at the end of the frame in increasing order */
5839 for (i = 0; i < AMD64_NREG; ++i)
5840 if (AMD64_IS_CALLEE_SAVED_REG (i) && (cfg->used_int_regs & (1 << i))) {
5841 amd64_mov_membase_reg (code, AMD64_RSP, save_area_offset, i, 8);
5842 mono_emit_unwind_op_offset (cfg, code, i, - (cfa_offset - save_area_offset));
5843 save_area_offset += 8;
5844 async_exc_point (code);
5848 /* store runtime generic context */
5849 if (cfg->rgctx_var) {
5850 g_assert (cfg->rgctx_var->opcode == OP_REGOFFSET &&
5851 (cfg->rgctx_var->inst_basereg == AMD64_RBP || cfg->rgctx_var->inst_basereg == AMD64_RSP));
5853 amd64_mov_membase_reg (code, cfg->rgctx_var->inst_basereg, cfg->rgctx_var->inst_offset, MONO_ARCH_RGCTX_REG, 8);
5856 /* compute max_length in order to use short forward jumps */
5857 max_epilog_size = get_max_epilog_size (cfg);
5858 if (cfg->opt & MONO_OPT_BRANCH) {
5859 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
5863 if (cfg->prof_options & MONO_PROFILE_COVERAGE)
5865 /* max alignment for loops */
5866 if ((cfg->opt & MONO_OPT_LOOP) && bb_is_loop_start (bb))
5867 max_length += LOOP_ALIGNMENT;
5869 MONO_BB_FOR_EACH_INS (bb, ins) {
5870 max_length += ((guint8 *)ins_get_spec (ins->opcode))[MONO_INST_LEN];
5873 /* Take prolog and epilog instrumentation into account */
5874 if (bb == cfg->bb_entry || bb == cfg->bb_exit)
5875 max_length += max_epilog_size;
5877 bb->max_length = max_length;
5881 sig = mono_method_signature (method);
5884 cinfo = cfg->arch.cinfo;
5886 if (sig->ret->type != MONO_TYPE_VOID) {
5887 /* Save volatile arguments to the stack */
5888 if (cfg->vret_addr && (cfg->vret_addr->opcode != OP_REGVAR))
5889 amd64_mov_membase_reg (code, cfg->vret_addr->inst_basereg, cfg->vret_addr->inst_offset, cinfo->ret.reg, 8);
5892 /* Keep this in sync with emit_load_volatile_arguments */
5893 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
5894 ArgInfo *ainfo = cinfo->args + i;
5895 gint32 stack_offset;
5898 ins = cfg->args [i];
5900 if ((ins->flags & MONO_INST_IS_DEAD) && !trace)
5901 /* Unused arguments */
5904 if (sig->hasthis && (i == 0))
5905 arg_type = &mono_defaults.object_class->byval_arg;
5907 arg_type = sig->params [i - sig->hasthis];
5909 stack_offset = ainfo->offset + ARGS_OFFSET;
5911 if (cfg->globalra) {
5912 /* All the other moves are done by the register allocator */
5913 switch (ainfo->storage) {
5914 case ArgInFloatSSEReg:
5915 amd64_sse_cvtss2sd_reg_reg (code, ainfo->reg, ainfo->reg);
5917 case ArgValuetypeInReg:
5918 for (quad = 0; quad < 2; quad ++) {
5919 switch (ainfo->pair_storage [quad]) {
5921 amd64_mov_membase_reg (code, ins->inst_basereg, ins->inst_offset + (quad * sizeof (gpointer)), ainfo->pair_regs [quad], sizeof (gpointer));
5923 case ArgInFloatSSEReg:
5924 amd64_movss_membase_reg (code, ins->inst_basereg, ins->inst_offset + (quad * sizeof (gpointer)), ainfo->pair_regs [quad]);
5926 case ArgInDoubleSSEReg:
5927 amd64_movsd_membase_reg (code, ins->inst_basereg, ins->inst_offset + (quad * sizeof (gpointer)), ainfo->pair_regs [quad]);
5932 g_assert_not_reached ();
5943 /* Save volatile arguments to the stack */
5944 if (ins->opcode != OP_REGVAR) {
5945 switch (ainfo->storage) {
5951 if (stack_offset & 0x1)
5953 else if (stack_offset & 0x2)
5955 else if (stack_offset & 0x4)
5960 amd64_mov_membase_reg (code, ins->inst_basereg, ins->inst_offset, ainfo->reg, size);
5963 case ArgInFloatSSEReg:
5964 amd64_movss_membase_reg (code, ins->inst_basereg, ins->inst_offset, ainfo->reg);
5966 case ArgInDoubleSSEReg:
5967 amd64_movsd_membase_reg (code, ins->inst_basereg, ins->inst_offset, ainfo->reg);
5969 case ArgValuetypeInReg:
5970 for (quad = 0; quad < 2; quad ++) {
5971 switch (ainfo->pair_storage [quad]) {
5973 amd64_mov_membase_reg (code, ins->inst_basereg, ins->inst_offset + (quad * sizeof (gpointer)), ainfo->pair_regs [quad], sizeof (gpointer));
5975 case ArgInFloatSSEReg:
5976 amd64_movss_membase_reg (code, ins->inst_basereg, ins->inst_offset + (quad * sizeof (gpointer)), ainfo->pair_regs [quad]);
5978 case ArgInDoubleSSEReg:
5979 amd64_movsd_membase_reg (code, ins->inst_basereg, ins->inst_offset + (quad * sizeof (gpointer)), ainfo->pair_regs [quad]);
5984 g_assert_not_reached ();
5988 case ArgValuetypeAddrInIReg:
5989 if (ainfo->pair_storage [0] == ArgInIReg)
5990 amd64_mov_membase_reg (code, ins->inst_left->inst_basereg, ins->inst_left->inst_offset, ainfo->pair_regs [0], sizeof (gpointer));
5996 /* Argument allocated to (non-volatile) register */
5997 switch (ainfo->storage) {
5999 amd64_mov_reg_reg (code, ins->dreg, ainfo->reg, 8);
6002 amd64_mov_reg_membase (code, ins->dreg, AMD64_RBP, ARGS_OFFSET + ainfo->offset, 8);
6005 g_assert_not_reached ();
6010 /* Might need to attach the thread to the JIT or change the domain for the callback */
6011 if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
6012 guint64 domain = (guint64)cfg->domain;
6014 args_clobbered = TRUE;
6017 * The call might clobber argument registers, but they are already
6018 * saved to the stack/global regs.
6020 if (appdomain_tls_offset != -1 && lmf_tls_offset != -1) {
6021 guint8 *buf, *no_domain_branch;
6023 code = mono_amd64_emit_tls_get (code, AMD64_RAX, appdomain_tls_offset);
6024 if (cfg->compile_aot) {
6025 /* AOT code is only used in the root domain */
6026 amd64_mov_reg_imm (code, AMD64_ARG_REG1, 0);
6028 if ((domain >> 32) == 0)
6029 amd64_mov_reg_imm_size (code, AMD64_ARG_REG1, domain, 4);
6031 amd64_mov_reg_imm_size (code, AMD64_ARG_REG1, domain, 8);
6033 amd64_alu_reg_reg (code, X86_CMP, AMD64_RAX, AMD64_ARG_REG1);
6034 no_domain_branch = code;
6035 x86_branch8 (code, X86_CC_NE, 0, 0);
6036 code = mono_amd64_emit_tls_get ( code, AMD64_RAX, lmf_addr_tls_offset);
6037 amd64_test_reg_reg (code, AMD64_RAX, AMD64_RAX);
6039 x86_branch8 (code, X86_CC_NE, 0, 0);
6040 amd64_patch (no_domain_branch, code);
6041 code = emit_call (cfg, code, MONO_PATCH_INFO_INTERNAL_METHOD,
6042 (gpointer)"mono_jit_thread_attach", TRUE);
6043 amd64_patch (buf, code);
6045 /* The TLS key actually contains a pointer to the MonoJitTlsData structure */
6046 /* FIXME: Add a separate key for LMF to avoid this */
6047 amd64_alu_reg_imm (code, X86_ADD, AMD64_RAX, G_STRUCT_OFFSET (MonoJitTlsData, lmf));
6050 g_assert (!cfg->compile_aot);
6051 if (cfg->compile_aot) {
6052 /* AOT code is only used in the root domain */
6053 amd64_mov_reg_imm (code, AMD64_ARG_REG1, 0);
6055 if ((domain >> 32) == 0)
6056 amd64_mov_reg_imm_size (code, AMD64_ARG_REG1, domain, 4);
6058 amd64_mov_reg_imm_size (code, AMD64_ARG_REG1, domain, 8);
6060 code = emit_call (cfg, code, MONO_PATCH_INFO_INTERNAL_METHOD,
6061 (gpointer)"mono_jit_thread_attach", TRUE);
6065 if (method->save_lmf) {
6066 if ((lmf_tls_offset != -1) && !optimize_for_xen) {
6068 * Optimized version which uses the mono_lmf TLS variable instead of
6069 * indirection through the mono_lmf_addr TLS variable.
6071 /* %rax = previous_lmf */
6072 x86_prefix (code, X86_FS_PREFIX);
6073 amd64_mov_reg_mem (code, AMD64_RAX, lmf_tls_offset, 8);
6075 /* Save previous_lmf */
6076 amd64_mov_membase_reg (code, cfg->frame_reg, lmf_offset + G_STRUCT_OFFSET (MonoLMF, previous_lmf), AMD64_RAX, 8);
6078 if (lmf_offset == 0) {
6079 x86_prefix (code, X86_FS_PREFIX);
6080 amd64_mov_mem_reg (code, lmf_tls_offset, cfg->frame_reg, 8);
6082 amd64_lea_membase (code, AMD64_R11, cfg->frame_reg, lmf_offset);
6083 x86_prefix (code, X86_FS_PREFIX);
6084 amd64_mov_mem_reg (code, lmf_tls_offset, AMD64_R11, 8);
6087 if (lmf_addr_tls_offset != -1) {
6088 /* Load lmf quicky using the FS register */
6089 code = mono_amd64_emit_tls_get (code, AMD64_RAX, lmf_addr_tls_offset);
6091 /* The TLS key actually contains a pointer to the MonoJitTlsData structure */
6092 /* FIXME: Add a separate key for LMF to avoid this */
6093 amd64_alu_reg_imm (code, X86_ADD, AMD64_RAX, G_STRUCT_OFFSET (MonoJitTlsData, lmf));
6098 * The call might clobber argument registers, but they are already
6099 * saved to the stack/global regs.
6101 args_clobbered = TRUE;
6102 code = emit_call (cfg, code, MONO_PATCH_INFO_INTERNAL_METHOD,
6103 (gpointer)"mono_get_lmf_addr", TRUE);
6107 amd64_mov_membase_reg (code, cfg->frame_reg, lmf_offset + G_STRUCT_OFFSET (MonoLMF, lmf_addr), AMD64_RAX, 8);
6108 /* Save previous_lmf */
6109 amd64_mov_reg_membase (code, AMD64_R11, AMD64_RAX, 0, 8);
6110 amd64_mov_membase_reg (code, cfg->frame_reg, lmf_offset + G_STRUCT_OFFSET (MonoLMF, previous_lmf), AMD64_R11, 8);
6112 amd64_lea_membase (code, AMD64_R11, cfg->frame_reg, lmf_offset);
6113 amd64_mov_membase_reg (code, AMD64_RAX, 0, AMD64_R11, 8);
6118 args_clobbered = TRUE;
6119 code = mono_arch_instrument_prolog (cfg, mono_trace_enter_method, code, TRUE);
6122 if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE)
6123 args_clobbered = TRUE;
6126 * Optimize the common case of the first bblock making a call with the same
6127 * arguments as the method. This works because the arguments are still in their
6128 * original argument registers.
6129 * FIXME: Generalize this
6131 if (!args_clobbered) {
6132 MonoBasicBlock *first_bb = cfg->bb_entry;
6135 next = mono_bb_first_ins (first_bb);
6136 if (!next && first_bb->next_bb) {
6137 first_bb = first_bb->next_bb;
6138 next = mono_bb_first_ins (first_bb);
6141 if (first_bb->in_count > 1)
6144 for (i = 0; next && i < sig->param_count + sig->hasthis; ++i) {
6145 ArgInfo *ainfo = cinfo->args + i;
6146 gboolean match = FALSE;
6148 ins = cfg->args [i];
6149 if (ins->opcode != OP_REGVAR) {
6150 switch (ainfo->storage) {
6152 if (((next->opcode == OP_LOAD_MEMBASE) || (next->opcode == OP_LOADI4_MEMBASE)) && next->inst_basereg == ins->inst_basereg && next->inst_offset == ins->inst_offset) {
6153 if (next->dreg == ainfo->reg) {
6157 next->opcode = OP_MOVE;
6158 next->sreg1 = ainfo->reg;
6159 /* Only continue if the instruction doesn't change argument regs */
6160 if (next->dreg == ainfo->reg || next->dreg == AMD64_RAX)
6170 /* Argument allocated to (non-volatile) register */
6171 switch (ainfo->storage) {
6173 if (next->opcode == OP_MOVE && next->sreg1 == ins->dreg && next->dreg == ainfo->reg) {
6185 //next = mono_inst_list_next (&next->node, &first_bb->ins_list);
6192 cfg->code_len = code - cfg->native_code;
6194 g_assert (cfg->code_len < cfg->code_size);
6200 mono_arch_emit_epilog (MonoCompile *cfg)
6202 MonoMethod *method = cfg->method;
6205 int max_epilog_size;
6207 gint32 lmf_offset = cfg->arch.lmf_offset;
6209 max_epilog_size = get_max_epilog_size (cfg);
6211 while (cfg->code_len + max_epilog_size > (cfg->code_size - 16)) {
6212 cfg->code_size *= 2;
6213 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
6214 mono_jit_stats.code_reallocs++;
6217 code = cfg->native_code + cfg->code_len;
6219 if (mono_jit_trace_calls != NULL && mono_trace_eval (method))
6220 code = mono_arch_instrument_epilog (cfg, mono_trace_leave_method, code, TRUE);
6222 /* the code restoring the registers must be kept in sync with OP_JMP */
6225 if (method->save_lmf) {
6226 /* check if we need to restore protection of the stack after a stack overflow */
6227 if (mono_get_jit_tls_offset () != -1) {
6229 code = mono_amd64_emit_tls_get (code, X86_ECX, mono_get_jit_tls_offset ());
6230 /* we load the value in a separate instruction: this mechanism may be
6231 * used later as a safer way to do thread interruption
6233 amd64_mov_reg_membase (code, X86_ECX, X86_ECX, G_STRUCT_OFFSET (MonoJitTlsData, restore_stack_prot), 8);
6234 x86_alu_reg_imm (code, X86_CMP, X86_ECX, 0);
6236 x86_branch8 (code, X86_CC_Z, 0, FALSE);
6237 /* note that the call trampoline will preserve eax/edx */
6238 x86_call_reg (code, X86_ECX);
6239 x86_patch (patch, code);
6241 /* FIXME: maybe save the jit tls in the prolog */
6243 if ((lmf_tls_offset != -1) && !optimize_for_xen) {
6245 * Optimized version which uses the mono_lmf TLS variable instead of indirection
6246 * through the mono_lmf_addr TLS variable.
6248 /* reg = previous_lmf */
6249 amd64_mov_reg_membase (code, AMD64_R11, cfg->frame_reg, lmf_offset + G_STRUCT_OFFSET (MonoLMF, previous_lmf), 8);
6250 x86_prefix (code, X86_FS_PREFIX);
6251 amd64_mov_mem_reg (code, lmf_tls_offset, AMD64_R11, 8);
6253 /* Restore previous lmf */
6254 amd64_mov_reg_membase (code, AMD64_RCX, cfg->frame_reg, lmf_offset + G_STRUCT_OFFSET (MonoLMF, previous_lmf), 8);
6255 amd64_mov_reg_membase (code, AMD64_R11, cfg->frame_reg, lmf_offset + G_STRUCT_OFFSET (MonoLMF, lmf_addr), 8);
6256 amd64_mov_membase_reg (code, AMD64_R11, 0, AMD64_RCX, 8);
6259 /* Restore caller saved regs */
6260 if (cfg->used_int_regs & (1 << AMD64_RBP)) {
6261 amd64_mov_reg_membase (code, AMD64_RBP, cfg->frame_reg, lmf_offset + G_STRUCT_OFFSET (MonoLMF, rbp), 8);
6263 if (cfg->used_int_regs & (1 << AMD64_RBX)) {
6264 amd64_mov_reg_membase (code, AMD64_RBX, cfg->frame_reg, lmf_offset + G_STRUCT_OFFSET (MonoLMF, rbx), 8);
6266 if (cfg->used_int_regs & (1 << AMD64_R12)) {
6267 amd64_mov_reg_membase (code, AMD64_R12, cfg->frame_reg, lmf_offset + G_STRUCT_OFFSET (MonoLMF, r12), 8);
6269 if (cfg->used_int_regs & (1 << AMD64_R13)) {
6270 amd64_mov_reg_membase (code, AMD64_R13, cfg->frame_reg, lmf_offset + G_STRUCT_OFFSET (MonoLMF, r13), 8);
6272 if (cfg->used_int_regs & (1 << AMD64_R14)) {
6273 amd64_mov_reg_membase (code, AMD64_R14, cfg->frame_reg, lmf_offset + G_STRUCT_OFFSET (MonoLMF, r14), 8);
6275 if (cfg->used_int_regs & (1 << AMD64_R15)) {
6276 amd64_mov_reg_membase (code, AMD64_R15, cfg->frame_reg, lmf_offset + G_STRUCT_OFFSET (MonoLMF, r15), 8);
6279 if (cfg->used_int_regs & (1 << AMD64_RDI)) {
6280 amd64_mov_reg_membase (code, AMD64_RDI, cfg->frame_reg, lmf_offset + G_STRUCT_OFFSET (MonoLMF, rdi), 8);
6282 if (cfg->used_int_regs & (1 << AMD64_RSI)) {
6283 amd64_mov_reg_membase (code, AMD64_RSI, cfg->frame_reg, lmf_offset + G_STRUCT_OFFSET (MonoLMF, rsi), 8);
6288 if (cfg->arch.omit_fp) {
6289 gint32 save_area_offset = cfg->arch.reg_save_area_offset;
6291 for (i = 0; i < AMD64_NREG; ++i)
6292 if (AMD64_IS_CALLEE_SAVED_REG (i) && (cfg->used_int_regs & (1 << i))) {
6293 amd64_mov_reg_membase (code, i, AMD64_RSP, save_area_offset, 8);
6294 save_area_offset += 8;
6298 for (i = 0; i < AMD64_NREG; ++i)
6299 if (AMD64_IS_CALLEE_SAVED_REG (i) && (cfg->used_int_regs & (1 << i)))
6300 pos -= sizeof (gpointer);
6303 if (pos == - sizeof (gpointer)) {
6304 /* Only one register, so avoid lea */
6305 for (i = AMD64_NREG - 1; i > 0; --i)
6306 if (AMD64_IS_CALLEE_SAVED_REG (i) && (cfg->used_int_regs & (1 << i))) {
6307 amd64_mov_reg_membase (code, i, AMD64_RBP, pos, 8);
6311 amd64_lea_membase (code, AMD64_RSP, AMD64_RBP, pos);
6313 /* Pop registers in reverse order */
6314 for (i = AMD64_NREG - 1; i > 0; --i)
6315 if (AMD64_IS_CALLEE_SAVED_REG (i) && (cfg->used_int_regs & (1 << i))) {
6316 amd64_pop_reg (code, i);
6323 /* Load returned vtypes into registers if needed */
6324 cinfo = cfg->arch.cinfo;
6325 if (cinfo->ret.storage == ArgValuetypeInReg) {
6326 ArgInfo *ainfo = &cinfo->ret;
6327 MonoInst *inst = cfg->ret;
6329 for (quad = 0; quad < 2; quad ++) {
6330 switch (ainfo->pair_storage [quad]) {
6332 amd64_mov_reg_membase (code, ainfo->pair_regs [quad], inst->inst_basereg, inst->inst_offset + (quad * sizeof (gpointer)), sizeof (gpointer));
6334 case ArgInFloatSSEReg:
6335 amd64_movss_reg_membase (code, ainfo->pair_regs [quad], inst->inst_basereg, inst->inst_offset + (quad * sizeof (gpointer)));
6337 case ArgInDoubleSSEReg:
6338 amd64_movsd_reg_membase (code, ainfo->pair_regs [quad], inst->inst_basereg, inst->inst_offset + (quad * sizeof (gpointer)));
6343 g_assert_not_reached ();
6348 if (cfg->arch.omit_fp) {
6349 if (cfg->arch.stack_alloc_size)
6350 amd64_alu_reg_imm (code, X86_ADD, AMD64_RSP, cfg->arch.stack_alloc_size);
6354 async_exc_point (code);
6357 cfg->code_len = code - cfg->native_code;
6359 g_assert (cfg->code_len < cfg->code_size);
6363 mono_arch_emit_exceptions (MonoCompile *cfg)
6365 MonoJumpInfo *patch_info;
6368 MonoClass *exc_classes [16];
6369 guint8 *exc_throw_start [16], *exc_throw_end [16];
6370 guint32 code_size = 0;
6372 /* Compute needed space */
6373 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
6374 if (patch_info->type == MONO_PATCH_INFO_EXC)
6376 if (patch_info->type == MONO_PATCH_INFO_R8)
6377 code_size += 8 + 15; /* sizeof (double) + alignment */
6378 if (patch_info->type == MONO_PATCH_INFO_R4)
6379 code_size += 4 + 15; /* sizeof (float) + alignment */
6382 while (cfg->code_len + code_size > (cfg->code_size - 16)) {
6383 cfg->code_size *= 2;
6384 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
6385 mono_jit_stats.code_reallocs++;
6388 code = cfg->native_code + cfg->code_len;
6390 /* add code to raise exceptions */
6392 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
6393 switch (patch_info->type) {
6394 case MONO_PATCH_INFO_EXC: {
6395 MonoClass *exc_class;
6399 amd64_patch (patch_info->ip.i + cfg->native_code, code);
6401 exc_class = mono_class_from_name (mono_defaults.corlib, "System", patch_info->data.name);
6402 g_assert (exc_class);
6403 throw_ip = patch_info->ip.i;
6405 //x86_breakpoint (code);
6406 /* Find a throw sequence for the same exception class */
6407 for (i = 0; i < nthrows; ++i)
6408 if (exc_classes [i] == exc_class)
6411 amd64_mov_reg_imm (code, AMD64_ARG_REG2, (exc_throw_end [i] - cfg->native_code) - throw_ip);
6412 x86_jump_code (code, exc_throw_start [i]);
6413 patch_info->type = MONO_PATCH_INFO_NONE;
6417 amd64_mov_reg_imm_size (code, AMD64_ARG_REG2, 0xf0f0f0f0, 4);
6421 exc_classes [nthrows] = exc_class;
6422 exc_throw_start [nthrows] = code;
6424 amd64_mov_reg_imm (code, AMD64_ARG_REG1, exc_class->type_token);
6426 patch_info->type = MONO_PATCH_INFO_NONE;
6428 code = emit_call_body (cfg, code, MONO_PATCH_INFO_INTERNAL_METHOD, "mono_arch_throw_corlib_exception");
6430 amd64_mov_reg_imm (buf, AMD64_ARG_REG2, (code - cfg->native_code) - throw_ip);
6435 exc_throw_end [nthrows] = code;
6447 /* Handle relocations with RIP relative addressing */
6448 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
6449 gboolean remove = FALSE;
6451 switch (patch_info->type) {
6452 case MONO_PATCH_INFO_R8:
6453 case MONO_PATCH_INFO_R4: {
6456 /* The SSE opcodes require a 16 byte alignment */
6457 code = (guint8*)ALIGN_TO (code, 16);
6459 pos = cfg->native_code + patch_info->ip.i;
6461 if (IS_REX (pos [1]))
6462 *(guint32*)(pos + 5) = (guint8*)code - pos - 9;
6464 *(guint32*)(pos + 4) = (guint8*)code - pos - 8;
6466 if (patch_info->type == MONO_PATCH_INFO_R8) {
6467 *(double*)code = *(double*)patch_info->data.target;
6468 code += sizeof (double);
6470 *(float*)code = *(float*)patch_info->data.target;
6471 code += sizeof (float);
6482 if (patch_info == cfg->patch_info)
6483 cfg->patch_info = patch_info->next;
6487 for (tmp = cfg->patch_info; tmp->next != patch_info; tmp = tmp->next)
6489 tmp->next = patch_info->next;
6494 cfg->code_len = code - cfg->native_code;
6496 g_assert (cfg->code_len < cfg->code_size);
6501 mono_arch_instrument_prolog (MonoCompile *cfg, void *func, void *p, gboolean enable_arguments)
6504 CallInfo *cinfo = NULL;
6505 MonoMethodSignature *sig;
6507 int i, n, stack_area = 0;
6509 /* Keep this in sync with mono_arch_get_argument_info */
6511 if (enable_arguments) {
6512 /* Allocate a new area on the stack and save arguments there */
6513 sig = mono_method_signature (cfg->method);
6515 cinfo = get_call_info (cfg->generic_sharing_context, cfg->mempool, sig, FALSE);
6517 n = sig->param_count + sig->hasthis;
6519 stack_area = ALIGN_TO (n * 8, 16);
6521 amd64_alu_reg_imm (code, X86_SUB, AMD64_RSP, stack_area);
6523 for (i = 0; i < n; ++i) {
6524 inst = cfg->args [i];
6526 if (inst->opcode == OP_REGVAR)
6527 amd64_mov_membase_reg (code, AMD64_RSP, (i * 8), inst->dreg, 8);
6529 amd64_mov_reg_membase (code, AMD64_R11, inst->inst_basereg, inst->inst_offset, 8);
6530 amd64_mov_membase_reg (code, AMD64_RSP, (i * 8), AMD64_R11, 8);
6535 mono_add_patch_info (cfg, code-cfg->native_code, MONO_PATCH_INFO_METHODCONST, cfg->method);
6536 amd64_set_reg_template (code, AMD64_ARG_REG1);
6537 amd64_mov_reg_reg (code, AMD64_ARG_REG2, AMD64_RSP, 8);
6538 code = emit_call (cfg, code, MONO_PATCH_INFO_ABS, (gpointer)func, TRUE);
6540 if (enable_arguments)
6541 amd64_alu_reg_imm (code, X86_ADD, AMD64_RSP, stack_area);
6555 mono_arch_instrument_epilog_full (MonoCompile *cfg, void *func, void *p, gboolean enable_arguments, gboolean preserve_argument_registers)
6558 int save_mode = SAVE_NONE;
6559 MonoMethod *method = cfg->method;
6560 int rtype = mini_type_get_underlying_type (NULL, mono_method_signature (method)->ret)->type;
6563 case MONO_TYPE_VOID:
6564 /* special case string .ctor icall */
6565 if (strcmp (".ctor", method->name) && method->klass == mono_defaults.string_class)
6566 save_mode = SAVE_EAX;
6568 save_mode = SAVE_NONE;
6572 save_mode = SAVE_EAX;
6576 save_mode = SAVE_XMM;
6578 case MONO_TYPE_GENERICINST:
6579 if (!mono_type_generic_inst_is_valuetype (mono_method_signature (method)->ret)) {
6580 save_mode = SAVE_EAX;
6584 case MONO_TYPE_VALUETYPE:
6585 save_mode = SAVE_STRUCT;
6588 save_mode = SAVE_EAX;
6592 /* Save the result and copy it into the proper argument register */
6593 switch (save_mode) {
6595 amd64_push_reg (code, AMD64_RAX);
6597 amd64_alu_reg_imm (code, X86_SUB, AMD64_RSP, 8);
6598 if (enable_arguments)
6599 amd64_mov_reg_reg (code, AMD64_ARG_REG2, AMD64_RAX, 8);
6603 if (enable_arguments)
6604 amd64_mov_reg_imm (code, AMD64_ARG_REG2, 0);
6607 amd64_alu_reg_imm (code, X86_SUB, AMD64_RSP, 8);
6608 amd64_movsd_membase_reg (code, AMD64_RSP, 0, AMD64_XMM0);
6610 amd64_alu_reg_imm (code, X86_SUB, AMD64_RSP, 8);
6612 * The result is already in the proper argument register so no copying
6619 g_assert_not_reached ();
6622 /* Set %al since this is a varargs call */
6623 if (save_mode == SAVE_XMM)
6624 amd64_mov_reg_imm (code, AMD64_RAX, 1);
6626 amd64_mov_reg_imm (code, AMD64_RAX, 0);
6628 if (preserve_argument_registers) {
6629 amd64_push_reg (code, MONO_AMD64_ARG_REG1);
6630 amd64_push_reg (code, MONO_AMD64_ARG_REG2);
6633 mono_add_patch_info (cfg, code-cfg->native_code, MONO_PATCH_INFO_METHODCONST, method);
6634 amd64_set_reg_template (code, AMD64_ARG_REG1);
6635 code = emit_call (cfg, code, MONO_PATCH_INFO_ABS, (gpointer)func, TRUE);
6637 if (preserve_argument_registers) {
6638 amd64_pop_reg (code, MONO_AMD64_ARG_REG2);
6639 amd64_pop_reg (code, MONO_AMD64_ARG_REG1);
6642 /* Restore result */
6643 switch (save_mode) {
6645 amd64_alu_reg_imm (code, X86_ADD, AMD64_RSP, 8);
6646 amd64_pop_reg (code, AMD64_RAX);
6652 amd64_alu_reg_imm (code, X86_ADD, AMD64_RSP, 8);
6653 amd64_movsd_reg_membase (code, AMD64_XMM0, AMD64_RSP, 0);
6654 amd64_alu_reg_imm (code, X86_ADD, AMD64_RSP, 8);
6659 g_assert_not_reached ();
6666 mono_arch_flush_icache (guint8 *code, gint size)
6672 mono_arch_flush_register_windows (void)
6677 mono_arch_is_inst_imm (gint64 imm)
6679 return amd64_is_imm32 (imm);
6683 * Determine whenever the trap whose info is in SIGINFO is caused by
6687 mono_arch_is_int_overflow (void *sigctx, void *info)
6694 mono_arch_sigctx_to_monoctx (sigctx, &ctx);
6696 rip = (guint8*)ctx.rip;
6698 if (IS_REX (rip [0])) {
6699 reg = amd64_rex_b (rip [0]);
6705 if ((rip [0] == 0xf7) && (x86_modrm_mod (rip [1]) == 0x3) && (x86_modrm_reg (rip [1]) == 0x7)) {
6707 reg += x86_modrm_rm (rip [1]);
6747 g_assert_not_reached ();
6759 mono_arch_get_patch_offset (guint8 *code)
6765 * mono_breakpoint_clean_code:
6767 * Copy @size bytes from @code - @offset to the buffer @buf. If the debugger inserted software
6768 * breakpoints in the original code, they are removed in the copy.
6770 * Returns TRUE if no sw breakpoint was present.
6773 mono_breakpoint_clean_code (guint8 *method_start, guint8 *code, int offset, guint8 *buf, int size)
6776 gboolean can_write = TRUE;
6778 * If method_start is non-NULL we need to perform bound checks, since we access memory
6779 * at code - offset we could go before the start of the method and end up in a different
6780 * page of memory that is not mapped or read incorrect data anyway. We zero-fill the bytes
6783 if (!method_start || code - offset >= method_start) {
6784 memcpy (buf, code - offset, size);
6786 int diff = code - method_start;
6787 memset (buf, 0, size);
6788 memcpy (buf + offset - diff, method_start, diff + size - offset);
6791 for (i = 0; i < MONO_BREAKPOINT_ARRAY_SIZE; ++i) {
6792 int idx = mono_breakpoint_info_index [i];
6796 ptr = mono_breakpoint_info [idx].address;
6797 if (ptr >= code && ptr < code + size) {
6798 guint8 saved_byte = mono_breakpoint_info [idx].saved_byte;
6800 /*g_print ("patching %p with 0x%02x (was: 0x%02x)\n", ptr, saved_byte, buf [ptr - code]);*/
6801 buf [ptr - code] = saved_byte;
6808 mono_arch_get_vcall_slot (guint8 *code, mgreg_t *regs, int *displacement)
6814 MonoJitInfo *ji = NULL;
6817 /* code - 9 might be before the start of the method */
6818 /* FIXME: Avoid this expensive call somehow */
6819 ji = mono_jit_info_table_find (mono_domain_get (), (char*)code);
6822 mono_breakpoint_clean_code (ji ? ji->code_start : NULL, code, 9, buf, sizeof (buf));
6830 * A given byte sequence can match more than case here, so we have to be
6831 * really careful about the ordering of the cases. Longer sequences
6833 * There are two types of calls:
6834 * - direct calls: 0xff address_byte 8/32 bits displacement
6835 * - indirect calls: nop nop nop <call>
6836 * The nops make sure we don't confuse the instruction preceeding an indirect
6837 * call with a direct call.
6839 if ((code [0] == 0x41) && (code [1] == 0xff) && (code [2] == 0x15)) {
6840 /* call OFFSET(%rip) */
6841 disp = *(guint32*)(code + 3);
6842 return (gpointer*)(code + disp + 7);
6843 } else if ((code [0] == 0xff) && (amd64_modrm_reg (code [1]) == 0x2) && (amd64_modrm_mod (code [1]) == 0x2) && (amd64_sib_index (code [2]) == 4) && (amd64_sib_scale (code [2]) == 0)) {
6844 /* call *[reg+disp32] using indexed addressing */
6845 /* The LLVM JIT emits this, and we emit it too for %r12 */
6846 if (IS_REX (code [-1])) {
6848 g_assert (amd64_rex_x (rex) == 0);
6850 reg = amd64_sib_base (code [2]);
6851 disp = *(gint32*)(code + 3);
6852 } else if ((code [1] == 0xff) && (amd64_modrm_reg (code [2]) == 0x2) && (amd64_modrm_mod (code [2]) == 0x2)) {
6853 /* call *[reg+disp32] */
6854 if (IS_REX (code [0]))
6856 reg = amd64_modrm_rm (code [2]);
6857 disp = *(gint32*)(code + 3);
6858 /* R10 is clobbered by the IMT thunk code */
6859 g_assert (reg != AMD64_R10);
6860 } else if (code [2] == 0xe8) {
6863 } else if ((code [3] == 0xff) && (amd64_modrm_reg (code [4]) == 0x2) && (amd64_modrm_mod (code [4]) == 0x1) && (amd64_sib_index (code [5]) == 4) && (amd64_sib_scale (code [5]) == 0)) {
6864 /* call *[r12+disp8] using indexed addressing */
6865 if (IS_REX (code [2]))
6867 reg = amd64_sib_base (code [5]);
6868 disp = *(gint8*)(code + 6);
6869 } else if (IS_REX (code [4]) && (code [5] == 0xff) && (amd64_modrm_reg (code [6]) == 0x2) && (amd64_modrm_mod (code [6]) == 0x3)) {
6872 } else if ((code [4] == 0xff) && (amd64_modrm_reg (code [5]) == 0x2) && (amd64_modrm_mod (code [5]) == 0x1)) {
6873 /* call *[reg+disp8] */
6874 if (IS_REX (code [3]))
6876 reg = amd64_modrm_rm (code [5]);
6877 disp = *(gint8*)(code + 6);
6878 //printf ("B: [%%r%d+0x%x]\n", reg, disp);
6880 else if ((code [5] == 0xff) && (amd64_modrm_reg (code [6]) == 0x2) && (amd64_modrm_mod (code [6]) == 0x0)) {
6882 if (IS_REX (code [4]))
6884 reg = amd64_modrm_rm (code [6]);
6888 g_assert_not_reached ();
6890 reg += amd64_rex_b (rex);
6892 /* R11 is clobbered by the trampoline code */
6893 g_assert (reg != AMD64_R11);
6895 *displacement = disp;
6896 return (gpointer)regs [reg];
6900 mono_arch_get_this_arg_reg (MonoMethodSignature *sig, MonoGenericSharingContext *gsctx, guint8 *code)
6902 int this_reg = AMD64_ARG_REG1;
6904 if (MONO_TYPE_ISSTRUCT (sig->ret)) {
6908 gsctx = mono_get_generic_context_from_code (code);
6910 cinfo = get_call_info (gsctx, NULL, sig, FALSE);
6912 if (cinfo->ret.storage != ArgValuetypeInReg)
6913 this_reg = AMD64_ARG_REG2;
6921 mono_arch_get_this_arg_from_call (MonoGenericSharingContext *gsctx, MonoMethodSignature *sig, mgreg_t *regs, guint8 *code)
6923 return (gpointer)regs [mono_arch_get_this_arg_reg (sig, gsctx, code)];
6926 #define MAX_ARCH_DELEGATE_PARAMS 10
6929 get_delegate_invoke_impl (gboolean has_target, guint32 param_count, guint32 *code_len)
6931 guint8 *code, *start;
6935 start = code = mono_global_codeman_reserve (64);
6937 /* Replace the this argument with the target */
6938 amd64_mov_reg_reg (code, AMD64_RAX, AMD64_ARG_REG1, 8);
6939 amd64_mov_reg_membase (code, AMD64_ARG_REG1, AMD64_RAX, G_STRUCT_OFFSET (MonoDelegate, target), 8);
6940 amd64_jump_membase (code, AMD64_RAX, G_STRUCT_OFFSET (MonoDelegate, method_ptr));
6942 g_assert ((code - start) < 64);
6944 start = code = mono_global_codeman_reserve (64);
6946 if (param_count == 0) {
6947 amd64_jump_membase (code, AMD64_ARG_REG1, G_STRUCT_OFFSET (MonoDelegate, method_ptr));
6949 /* We have to shift the arguments left */
6950 amd64_mov_reg_reg (code, AMD64_RAX, AMD64_ARG_REG1, 8);
6951 for (i = 0; i < param_count; ++i) {
6954 amd64_mov_reg_reg (code, param_regs [i], param_regs [i + 1], 8);
6956 amd64_mov_reg_membase (code, param_regs [i], AMD64_RSP, 0x28, 8);
6958 amd64_mov_reg_reg (code, param_regs [i], param_regs [i + 1], 8);
6962 amd64_jump_membase (code, AMD64_RAX, G_STRUCT_OFFSET (MonoDelegate, method_ptr));
6964 g_assert ((code - start) < 64);
6967 mono_debug_add_delegate_trampoline (start, code - start);
6970 *code_len = code - start;
6976 * mono_arch_get_delegate_invoke_impls:
6978 * Return a list of MonoAotTrampInfo structures for the delegate invoke impl
6982 mono_arch_get_delegate_invoke_impls (void)
6989 code = get_delegate_invoke_impl (TRUE, 0, &code_len);
6990 res = g_slist_prepend (res, mono_aot_tramp_info_create (g_strdup ("delegate_invoke_impl_has_target"), code, code_len));
6992 for (i = 0; i < MAX_ARCH_DELEGATE_PARAMS; ++i) {
6993 code = get_delegate_invoke_impl (FALSE, i, &code_len);
6994 res = g_slist_prepend (res, mono_aot_tramp_info_create (g_strdup_printf ("delegate_invoke_impl_target_%d", i), code, code_len));
7001 mono_arch_get_delegate_invoke_impl (MonoMethodSignature *sig, gboolean has_target)
7003 guint8 *code, *start;
7006 if (sig->param_count > MAX_ARCH_DELEGATE_PARAMS)
7009 /* FIXME: Support more cases */
7010 if (MONO_TYPE_ISSTRUCT (sig->ret))
7014 static guint8* cached = NULL;
7020 start = mono_aot_get_named_code ("delegate_invoke_impl_has_target");
7022 start = get_delegate_invoke_impl (TRUE, 0, NULL);
7024 mono_memory_barrier ();
7028 static guint8* cache [MAX_ARCH_DELEGATE_PARAMS + 1] = {NULL};
7029 for (i = 0; i < sig->param_count; ++i)
7030 if (!mono_is_regsize_var (sig->params [i]))
7032 if (sig->param_count > 4)
7035 code = cache [sig->param_count];
7039 if (mono_aot_only) {
7040 char *name = g_strdup_printf ("delegate_invoke_impl_target_%d", sig->param_count);
7041 start = mono_aot_get_named_code (name);
7044 start = get_delegate_invoke_impl (FALSE, sig->param_count, NULL);
7047 mono_memory_barrier ();
7049 cache [sig->param_count] = start;
7056 * Support for fast access to the thread-local lmf structure using the GS
7057 * segment register on NPTL + kernel 2.6.x.
7060 static gboolean tls_offset_inited = FALSE;
7063 mono_arch_setup_jit_tls_data (MonoJitTlsData *tls)
7065 if (!tls_offset_inited) {
7068 * We need to init this multiple times, since when we are first called, the key might not
7069 * be initialized yet.
7071 appdomain_tls_offset = mono_domain_get_tls_key ();
7072 lmf_tls_offset = mono_get_jit_tls_key ();
7073 lmf_addr_tls_offset = mono_get_jit_tls_key ();
7075 /* Only 64 tls entries can be accessed using inline code */
7076 if (appdomain_tls_offset >= 64)
7077 appdomain_tls_offset = -1;
7078 if (lmf_tls_offset >= 64)
7079 lmf_tls_offset = -1;
7081 tls_offset_inited = TRUE;
7083 optimize_for_xen = access ("/proc/xen", F_OK) == 0;
7085 appdomain_tls_offset = mono_domain_get_tls_offset ();
7086 lmf_tls_offset = mono_get_lmf_tls_offset ();
7087 lmf_addr_tls_offset = mono_get_lmf_addr_tls_offset ();
7093 mono_arch_free_jit_tls_data (MonoJitTlsData *tls)
7097 #ifdef MONO_ARCH_HAVE_IMT
7099 #define CMP_SIZE (6 + 1)
7100 #define CMP_REG_REG_SIZE (4 + 1)
7101 #define BR_SMALL_SIZE 2
7102 #define BR_LARGE_SIZE 6
7103 #define MOV_REG_IMM_SIZE 10
7104 #define MOV_REG_IMM_32BIT_SIZE 6
7105 #define JUMP_REG_SIZE (2 + 1)
7108 imt_branch_distance (MonoIMTCheckItem **imt_entries, int start, int target)
7110 int i, distance = 0;
7111 for (i = start; i < target; ++i)
7112 distance += imt_entries [i]->chunk_size;
7117 * LOCKING: called with the domain lock held
7120 mono_arch_build_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count,
7121 gpointer fail_tramp)
7125 guint8 *code, *start;
7126 gboolean vtable_is_32bit = ((gsize)(vtable) == (gsize)(int)(gsize)(vtable));
7128 for (i = 0; i < count; ++i) {
7129 MonoIMTCheckItem *item = imt_entries [i];
7130 if (item->is_equals) {
7131 if (item->check_target_idx) {
7132 if (!item->compare_done) {
7133 if (amd64_is_imm32 (item->key))
7134 item->chunk_size += CMP_SIZE;
7136 item->chunk_size += MOV_REG_IMM_SIZE + CMP_REG_REG_SIZE;
7138 if (item->has_target_code) {
7139 item->chunk_size += MOV_REG_IMM_SIZE;
7141 if (vtable_is_32bit)
7142 item->chunk_size += MOV_REG_IMM_32BIT_SIZE;
7144 item->chunk_size += MOV_REG_IMM_SIZE;
7146 item->chunk_size += BR_SMALL_SIZE + JUMP_REG_SIZE;
7149 item->chunk_size += MOV_REG_IMM_SIZE * 3 + CMP_REG_REG_SIZE +
7150 BR_SMALL_SIZE + JUMP_REG_SIZE * 2;
7152 if (vtable_is_32bit)
7153 item->chunk_size += MOV_REG_IMM_32BIT_SIZE;
7155 item->chunk_size += MOV_REG_IMM_SIZE;
7156 item->chunk_size += JUMP_REG_SIZE;
7157 /* with assert below:
7158 * item->chunk_size += CMP_SIZE + BR_SMALL_SIZE + 1;
7163 if (amd64_is_imm32 (item->key))
7164 item->chunk_size += CMP_SIZE;
7166 item->chunk_size += MOV_REG_IMM_SIZE + CMP_REG_REG_SIZE;
7167 item->chunk_size += BR_LARGE_SIZE;
7168 imt_entries [item->check_target_idx]->compare_done = TRUE;
7170 size += item->chunk_size;
7173 code = mono_method_alloc_generic_virtual_thunk (domain, size);
7175 code = mono_domain_code_reserve (domain, size);
7177 for (i = 0; i < count; ++i) {
7178 MonoIMTCheckItem *item = imt_entries [i];
7179 item->code_target = code;
7180 if (item->is_equals) {
7181 gboolean fail_case = !item->check_target_idx && fail_tramp;
7183 if (item->check_target_idx || fail_case) {
7184 if (!item->compare_done || fail_case) {
7185 if (amd64_is_imm32 (item->key))
7186 amd64_alu_reg_imm (code, X86_CMP, MONO_ARCH_IMT_REG, (guint32)(gssize)item->key);
7188 amd64_mov_reg_imm (code, AMD64_R10, item->key);
7189 amd64_alu_reg_reg (code, X86_CMP, MONO_ARCH_IMT_REG, AMD64_R10);
7192 item->jmp_code = code;
7193 amd64_branch8 (code, X86_CC_NE, 0, FALSE);
7194 /* See the comment below about R10 */
7195 if (item->has_target_code) {
7196 amd64_mov_reg_imm (code, AMD64_R10, item->value.target_code);
7197 amd64_jump_reg (code, AMD64_R10);
7199 amd64_mov_reg_imm (code, AMD64_R10, & (vtable->vtable [item->value.vtable_slot]));
7200 amd64_jump_membase (code, AMD64_R10, 0);
7204 amd64_patch (item->jmp_code, code);
7205 amd64_mov_reg_imm (code, AMD64_R10, fail_tramp);
7206 amd64_jump_reg (code, AMD64_R10);
7207 item->jmp_code = NULL;
7210 /* enable the commented code to assert on wrong method */
7212 if (amd64_is_imm32 (item->key))
7213 amd64_alu_reg_imm (code, X86_CMP, MONO_ARCH_IMT_REG, (guint32)(gssize)item->key);
7215 amd64_mov_reg_imm (code, AMD64_R10, item->key);
7216 amd64_alu_reg_reg (code, X86_CMP, MONO_ARCH_IMT_REG, AMD64_R10);
7218 item->jmp_code = code;
7219 amd64_branch8 (code, X86_CC_NE, 0, FALSE);
7220 /* See the comment below about R10 */
7221 amd64_mov_reg_imm (code, AMD64_R10, & (vtable->vtable [item->value.vtable_slot]));
7222 amd64_jump_membase (code, AMD64_R10, 0);
7223 amd64_patch (item->jmp_code, code);
7224 amd64_breakpoint (code);
7225 item->jmp_code = NULL;
7227 /* We're using R10 here because R11
7228 needs to be preserved. R10 needs
7229 to be preserved for calls which
7230 require a runtime generic context,
7231 but interface calls don't. */
7232 amd64_mov_reg_imm (code, AMD64_R10, & (vtable->vtable [item->value.vtable_slot]));
7233 amd64_jump_membase (code, AMD64_R10, 0);
7237 if (amd64_is_imm32 (item->key))
7238 amd64_alu_reg_imm (code, X86_CMP, MONO_ARCH_IMT_REG, (guint32)(gssize)item->key);
7240 amd64_mov_reg_imm (code, AMD64_R10, item->key);
7241 amd64_alu_reg_reg (code, X86_CMP, MONO_ARCH_IMT_REG, AMD64_R10);
7243 item->jmp_code = code;
7244 if (x86_is_imm8 (imt_branch_distance (imt_entries, i, item->check_target_idx)))
7245 x86_branch8 (code, X86_CC_GE, 0, FALSE);
7247 x86_branch32 (code, X86_CC_GE, 0, FALSE);
7249 g_assert (code - item->code_target <= item->chunk_size);
7251 /* patch the branches to get to the target items */
7252 for (i = 0; i < count; ++i) {
7253 MonoIMTCheckItem *item = imt_entries [i];
7254 if (item->jmp_code) {
7255 if (item->check_target_idx) {
7256 amd64_patch (item->jmp_code, imt_entries [item->check_target_idx]->code_target);
7262 mono_stats.imt_thunks_size += code - start;
7263 g_assert (code - start <= size);
7269 mono_arch_find_imt_method (mgreg_t *regs, guint8 *code)
7271 return (MonoMethod*)regs [MONO_ARCH_IMT_REG];
7275 mono_arch_find_this_argument (mgreg_t *regs, MonoMethod *method, MonoGenericSharingContext *gsctx)
7277 return mono_arch_get_this_arg_from_call (gsctx, mono_method_signature (method), regs, NULL);
7282 mono_arch_find_static_call_vtable (mgreg_t *regs, guint8 *code)
7284 return (MonoVTable*) regs [MONO_ARCH_RGCTX_REG];
7288 mono_arch_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
7290 MonoInst *ins = NULL;
7293 if (cmethod->klass == mono_defaults.math_class) {
7294 if (strcmp (cmethod->name, "Sin") == 0) {
7296 } else if (strcmp (cmethod->name, "Cos") == 0) {
7298 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
7300 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
7305 MONO_INST_NEW (cfg, ins, opcode);
7306 ins->type = STACK_R8;
7307 ins->dreg = mono_alloc_freg (cfg);
7308 ins->sreg1 = args [0]->dreg;
7309 MONO_ADD_INS (cfg->cbb, ins);
7313 if (cfg->opt & MONO_OPT_CMOV) {
7314 if (strcmp (cmethod->name, "Min") == 0) {
7315 if (fsig->params [0]->type == MONO_TYPE_I4)
7317 if (fsig->params [0]->type == MONO_TYPE_U4)
7318 opcode = OP_IMIN_UN;
7319 else if (fsig->params [0]->type == MONO_TYPE_I8)
7321 else if (fsig->params [0]->type == MONO_TYPE_U8)
7322 opcode = OP_LMIN_UN;
7323 } else if (strcmp (cmethod->name, "Max") == 0) {
7324 if (fsig->params [0]->type == MONO_TYPE_I4)
7326 if (fsig->params [0]->type == MONO_TYPE_U4)
7327 opcode = OP_IMAX_UN;
7328 else if (fsig->params [0]->type == MONO_TYPE_I8)
7330 else if (fsig->params [0]->type == MONO_TYPE_U8)
7331 opcode = OP_LMAX_UN;
7336 MONO_INST_NEW (cfg, ins, opcode);
7337 ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
7338 ins->dreg = mono_alloc_ireg (cfg);
7339 ins->sreg1 = args [0]->dreg;
7340 ins->sreg2 = args [1]->dreg;
7341 MONO_ADD_INS (cfg->cbb, ins);
7345 /* OP_FREM is not IEEE compatible */
7346 else if (strcmp (cmethod->name, "IEEERemainder") == 0) {
7347 MONO_INST_NEW (cfg, ins, OP_FREM);
7348 ins->inst_i0 = args [0];
7349 ins->inst_i1 = args [1];
7355 * Can't implement CompareExchange methods this way since they have
7363 mono_arch_print_tree (MonoInst *tree, int arity)
7368 MonoInst* mono_arch_get_domain_intrinsic (MonoCompile* cfg)
7372 if (appdomain_tls_offset == -1)
7375 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
7376 ins->inst_offset = appdomain_tls_offset;
7380 #define _CTX_REG(ctx,fld,i) ((gpointer)((&ctx->fld)[i]))
7383 mono_arch_context_get_int_reg (MonoContext *ctx, int reg)
7386 case AMD64_RCX: return (gpointer)ctx->rcx;
7387 case AMD64_RDX: return (gpointer)ctx->rdx;
7388 case AMD64_RBX: return (gpointer)ctx->rbx;
7389 case AMD64_RBP: return (gpointer)ctx->rbp;
7390 case AMD64_RSP: return (gpointer)ctx->rsp;
7393 return _CTX_REG (ctx, rax, reg);
7395 return _CTX_REG (ctx, r12, reg - 12);
7397 g_assert_not_reached ();
7401 /* Soft Debug support */
7402 #ifdef MONO_ARCH_SOFT_DEBUG_SUPPORTED
7405 * mono_arch_set_breakpoint:
7407 * Set a breakpoint at the native code corresponding to JI at NATIVE_OFFSET.
7408 * The location should contain code emitted by OP_SEQ_POINT.
7411 mono_arch_set_breakpoint (MonoJitInfo *ji, guint8 *ip)
7414 guint8 *orig_code = code;
7417 * In production, we will use int3 (has to fix the size in the md
7418 * file). But that could confuse gdb, so during development, we emit a SIGSEGV
7421 g_assert (code [0] == 0x90);
7423 g_assert (((guint64)bp_trigger_page >> 32) == 0);
7425 amd64_mov_reg_mem (code, AMD64_R11, (guint64)bp_trigger_page, 4);
7426 g_assert (code - orig_code == BREAKPOINT_SIZE);
7430 * mono_arch_clear_breakpoint:
7432 * Clear the breakpoint at IP.
7435 mono_arch_clear_breakpoint (MonoJitInfo *ji, guint8 *ip)
7440 for (i = 0; i < BREAKPOINT_SIZE; ++i)
7445 * mono_arch_start_single_stepping:
7447 * Start single stepping.
7450 mono_arch_start_single_stepping (void)
7452 mono_mprotect (ss_trigger_page, mono_pagesize (), 0);
7456 * mono_arch_stop_single_stepping:
7458 * Stop single stepping.
7461 mono_arch_stop_single_stepping (void)
7463 mono_mprotect (ss_trigger_page, mono_pagesize (), MONO_MMAP_READ);
7467 * mono_arch_is_single_step_event:
7469 * Return whenever the machine state in SIGCTX corresponds to a single
7473 mono_arch_is_single_step_event (void *info, void *sigctx)
7476 EXCEPTION_RECORD* einfo = (EXCEPTION_RECORD*)info;
7479 siginfo_t* sinfo = (siginfo_t*) info;
7480 /* Sometimes the address is off by 4 */
7481 if (sinfo->si_addr >= ss_trigger_page && (guint8*)sinfo->si_addr <= (guint8*)ss_trigger_page + 128)
7489 mono_arch_is_breakpoint_event (void *info, void *sigctx)
7492 EXCEPTION_RECORD* einfo = (EXCEPTION_RECORD*)info;
7495 siginfo_t* sinfo = (siginfo_t*) info;
7496 /* Sometimes the address is off by 4 */
7497 if (sinfo->si_addr >= bp_trigger_page && (guint8*)sinfo->si_addr <= (guint8*)bp_trigger_page + 128)
7505 * mono_arch_get_ip_for_breakpoint:
7507 * Convert the ip in CTX to the address where a breakpoint was placed.
7510 mono_arch_get_ip_for_breakpoint (MonoJitInfo *ji, MonoContext *ctx)
7512 guint8 *ip = MONO_CONTEXT_GET_IP (ctx);
7514 /* size of xor r11, r11 */
7521 * mono_arch_get_ip_for_single_step:
7523 * Convert the ip in CTX to the address stored in seq_points.
7526 mono_arch_get_ip_for_single_step (MonoJitInfo *ji, MonoContext *ctx)
7528 guint8 *ip = MONO_CONTEXT_GET_IP (ctx);
7530 /* Size of amd64_mov_reg_mem (r11) */
7537 * mono_arch_skip_breakpoint:
7539 * Modify CTX so the ip is placed after the breakpoint instruction, so when
7540 * we resume, the instruction is not executed again.
7543 mono_arch_skip_breakpoint (MonoContext *ctx)
7545 MONO_CONTEXT_SET_IP (ctx, (guint8*)MONO_CONTEXT_GET_IP (ctx) + BREAKPOINT_SIZE);
7549 * mono_arch_skip_single_step:
7551 * Modify CTX so the ip is placed after the single step trigger instruction,
7552 * we resume, the instruction is not executed again.
7555 mono_arch_skip_single_step (MonoContext *ctx)
7557 MONO_CONTEXT_SET_IP (ctx, (guint8*)MONO_CONTEXT_GET_IP (ctx) + 8);
7561 * mono_arch_create_seq_point_info:
7563 * Return a pointer to a data structure which is used by the sequence
7564 * point implementation in AOTed code.
7567 mono_arch_get_seq_point_info (MonoDomain *domain, guint8 *code)