2 * emit-x86.c: Support functions for emitting x86 code
5 * Dietmar Maurer (dietmar@ximian.com)
6 * Miguel de Icaza (miguel@ximian.com)
8 * (C) 2001 Ximian, Inc.
14 #include <mono/metadata/assembly.h>
15 #include <mono/metadata/loader.h>
16 #include <mono/metadata/cil-coff.h>
17 #include <mono/metadata/tabledefs.h>
18 #include <mono/metadata/class.h>
19 #include <mono/metadata/debug-helpers.h>
20 #include <mono/metadata/mono-endian.h>
21 #include <mono/arch/x86/x86-codegen.h>
22 #include <mono/metadata/profiler-private.h>
29 //#define DEBUG_REGALLOC
30 //#define DEBUG_SPILLS
33 * we may want a x86-specific header or we
34 * can just declare it extern in x86.brg.
36 int mono_x86_have_cmov = 0;
39 cpuid (int id, int* p_eax, int* p_ebx, int* p_ecx, int* p_edx)
42 __asm__ __volatile__ (
46 "xorl $0x200000, %%eax\n"
52 "andl $0x200000, %%eax\n"
60 __asm__ __volatile__ ("cpuid"
61 : "=a" (*p_eax), "=b" (*p_ebx), "=c" (*p_ecx), "=d" (*p_edx)
69 mono_cpu_detect (void) {
70 int eax, ebx, ecx, edx;
72 /* Feature Flags function, flags returned in EDX. */
73 if (cpuid(1, &eax, &ebx, &ecx, &edx)) {
74 if (edx & (1U << 15)) {
75 mono_x86_have_cmov = 1;
81 enter_method (MonoMethod *method, char *ebp)
87 printf ("ENTER: %s.%s::%s\n(", method->klass->name_space,
88 method->klass->name, method->name);
91 if (((int)ebp & 3) != 0) {
92 g_error ("unaligned stack detected (%p)", ebp);
97 if (ISSTRUCT (method->signature->ret)) {
100 g_assert (!method->signature->ret->byref);
102 size = mono_type_stack_size (method->signature->ret, &align);
104 printf ("VALUERET:%p, ", *((gpointer *)ebp));
105 ebp += sizeof (gpointer);
108 if (method->signature->hasthis) {
109 if (method->klass->valuetype) {
110 printf ("value:%p, ", *((gpointer *)ebp));
112 o = *((MonoObject **)ebp);
116 class = o->vtable->klass;
118 if (class == mono_defaults.string_class) {
119 printf ("this:[STRING:%p:%s], ", o, mono_string_to_utf8 ((MonoString *)o));
121 printf ("this:%p[%s.%s], ", o, class->name_space, class->name);
124 ebp += sizeof (gpointer);
127 for (i = 0; i < method->signature->param_count; ++i) {
128 MonoType *type = method->signature->params [i];
130 size = mono_type_stack_size (type, &align);
133 printf ("[BYREF:%p], ", *((gpointer *)ebp));
134 } else switch (type->type) {
136 case MONO_TYPE_BOOLEAN:
146 printf ("%d, ", *((int *)(ebp)));
148 case MONO_TYPE_STRING: {
149 MonoString *s = *((MonoString **)ebp);
151 g_assert (((MonoObject *)s)->vtable->klass == mono_defaults.string_class);
152 printf ("[STRING:%p:%s], ", s, mono_string_to_utf8 (s));
154 printf ("[STRING:null], ");
157 case MONO_TYPE_CLASS:
158 case MONO_TYPE_OBJECT: {
159 o = *((MonoObject **)ebp);
161 class = o->vtable->klass;
163 if (class == mono_defaults.string_class) {
164 printf ("[STRING:%p:%s], ", o, mono_string_to_utf8 ((MonoString *)o));
165 } else if (class == mono_defaults.int32_class) {
166 printf ("[INT32:%p:%d], ", o, *(gint32 *)((char *)o + sizeof (MonoObject)));
168 printf ("[%s.%s:%p], ", class->name_space, class->name, o);
170 printf ("%p, ", *((gpointer *)(ebp)));
175 case MONO_TYPE_FNPTR:
176 case MONO_TYPE_ARRAY:
177 case MONO_TYPE_SZARRAY:
178 printf ("%p, ", *((gpointer *)(ebp)));
181 printf ("%lld, ", *((gint64 *)(ebp)));
184 printf ("%f, ", *((float *)(ebp)));
187 printf ("%f, ", *((double *)(ebp)));
189 case MONO_TYPE_VALUETYPE:
191 for (j = 0; j < size; j++)
192 printf ("%02x,", *((guint8*)ebp +j));
199 g_assert (align == 4 || align == 8);
200 ebp += size + align - 1;
201 ebp = (gpointer)((unsigned)ebp & ~(align - 1));
208 leave_method (MonoMethod *method, int edx, int eax, double test)
212 printf ("LEAVE: %s.%s::%s ", method->klass->name_space,
213 method->klass->name, method->name);
215 switch (method->signature->ret->type) {
218 case MONO_TYPE_BOOLEAN:
220 printf ("TRUE:%d", eax);
234 printf ("EAX=%d", eax);
236 case MONO_TYPE_STRING: {
237 MonoString *s = (MonoString *)eax;
240 g_assert (((MonoObject *)s)->vtable->klass == mono_defaults.string_class);
241 printf ("[STRING:%p:%s]", s, mono_string_to_utf8 (s));
243 printf ("[STRING:null], ");
246 case MONO_TYPE_OBJECT: {
247 MonoObject *o = (MonoObject *)eax;
250 if (o->vtable->klass == mono_defaults.boolean_class) {
251 printf ("[BOOLEAN:%p:%d]", o, *((guint8 *)o + sizeof (MonoObject)));
252 } else if (o->vtable->klass == mono_defaults.int32_class) {
253 printf ("[INT32:%p:%d]", o, *((gint32 *)((char *)o + sizeof (MonoObject))));
255 printf ("[%s.%s:%p]", o->vtable->klass->name_space, o->vtable->klass->name, o);
257 printf ("[OBJECT:%p]", o);
261 case MONO_TYPE_CLASS:
263 case MONO_TYPE_FNPTR:
264 case MONO_TYPE_ARRAY:
265 case MONO_TYPE_SZARRAY:
266 printf ("EAX=%p", (gpointer)eax);
269 *((gint32 *)&l) = eax;
270 *((gint32 *)&l + 1) = edx;
271 printf ("EAX/EDX=%lld", l);
274 printf ("FP=%f\n", test);
277 printf ("(unknown return type)");
284 * arch_emit_prologue:
285 * @cfg: pointer to status information
287 * Emits the function prolog.
290 arch_emit_prologue (MonoFlowGraph *cfg)
292 MonoMethod *method = cfg->method;
293 MonoMethodHeader *header = ((MonoMethodNormal *)method)->header;
296 x86_push_reg (cfg->code, X86_EBP);
297 x86_mov_reg_reg (cfg->code, X86_EBP, X86_ESP, 4);
299 if (cfg->locals_size)
300 x86_alu_reg_imm (cfg->code, X86_SUB, X86_ESP, cfg->locals_size);
302 if (mono_regset_reg_used (cfg->rs, X86_EBX))
303 x86_push_reg (cfg->code, X86_EBX);
305 if (mono_regset_reg_used (cfg->rs, X86_EDI))
306 x86_push_reg (cfg->code, X86_EDI);
308 if (mono_regset_reg_used (cfg->rs, X86_ESI))
309 x86_push_reg (cfg->code, X86_ESI);
311 if (mono_jit_trace_calls) {
312 x86_push_reg (cfg->code, X86_EBP);
313 x86_push_imm (cfg->code, cfg->method);
314 x86_mov_reg_imm (cfg->code, X86_EAX, enter_method);
315 x86_call_reg (cfg->code, X86_EAX);
316 x86_alu_reg_imm (cfg->code, X86_ADD, X86_ESP, 8);
318 if (mono_jit_profile) {
319 x86_push_imm (cfg->code, cfg->method);
320 x86_mov_reg_imm (cfg->code, X86_EAX, mono_profiler_method_enter);
321 x86_call_reg (cfg->code, X86_EAX);
322 x86_alu_reg_imm (cfg->code, X86_ADD, X86_ESP, 4);
325 /* initialize local vars */
326 if (header->num_locals) {
328 if (header->init_locals) {
329 int offset = g_array_index (cfg->varinfo, MonoVarInfo,
330 cfg->locals_start_index + header->num_locals - 1).offset;
333 if (size == 1 || size == 2 || size == 4) {
334 x86_mov_membase_imm (cfg->code, X86_EBP, offset, 0, size);
342 if (!mono_regset_reg_used (cfg->rs, X86_EDI))
343 x86_push_reg (cfg->code, X86_EDI);
344 x86_lea_membase (cfg->code, X86_EDI, X86_EBP, offset);
345 x86_alu_reg_reg (cfg->code, X86_XOR, X86_EAX, X86_EAX);
346 x86_mov_reg_imm (cfg->code, X86_ECX, i);
348 x86_prefix (cfg->code, X86_REP_PREFIX);
349 x86_stosl (cfg->code);
350 for (i = 0; i < j; i++)
351 x86_stosb (cfg->code);
352 if (!mono_regset_reg_used (cfg->rs, X86_EDI))
353 x86_pop_reg (cfg->code, X86_EDI);
357 x86_mov_membase_imm (cfg->code, X86_EBP, offset, 0, 2);
358 x86_mov_membase_imm (cfg->code, X86_EBP, offset + 2, 0, 1);
363 /* we always need to initialize object pointers */
365 for (i = 0; i < header->num_locals; ++i) {
366 MonoType *t = header->locals [i];
367 int offset = g_array_index (cfg->varinfo, MonoVarInfo, cfg->locals_start_index + i).offset;
370 x86_mov_membase_imm (cfg->code, X86_EBP, offset, 0, 4);
375 case MONO_TYPE_STRING:
376 case MONO_TYPE_CLASS:
377 case MONO_TYPE_ARRAY:
378 case MONO_TYPE_SZARRAY:
379 case MONO_TYPE_OBJECT:
380 x86_mov_membase_imm (cfg->code, X86_EBP, offset, 0, 4);
390 * arch_emit_epilogue:
391 * @cfg: pointer to status information
393 * Emits the function epilog.
396 arch_emit_epilogue (MonoFlowGraph *cfg)
399 * note: with trace and profiling the value on the FP stack may get clobbered.
401 if (mono_jit_trace_calls) {
402 x86_fld_reg (cfg->code, 0);
403 x86_alu_reg_imm (cfg->code, X86_SUB, X86_ESP, 8);
404 x86_fst_membase (cfg->code, X86_ESP, 0, TRUE, TRUE);
405 x86_push_reg (cfg->code, X86_EAX);
406 x86_push_reg (cfg->code, X86_EDX);
407 x86_push_imm (cfg->code, cfg->method);
408 x86_mov_reg_imm (cfg->code, X86_EAX, leave_method);
409 x86_call_reg (cfg->code, X86_EAX);
410 x86_alu_reg_imm (cfg->code, X86_ADD, X86_ESP, 4);
411 x86_pop_reg (cfg->code, X86_EDX);
412 x86_pop_reg (cfg->code, X86_EAX);
413 x86_alu_reg_imm (cfg->code, X86_ADD, X86_ESP, 8);
415 if (mono_jit_profile) {
416 x86_push_reg (cfg->code, X86_EAX);
417 x86_push_reg (cfg->code, X86_EDX);
418 x86_push_imm (cfg->code, cfg->method);
419 x86_mov_reg_imm (cfg->code, X86_EAX, mono_profiler_method_leave);
420 x86_call_reg (cfg->code, X86_EAX);
421 x86_alu_reg_imm (cfg->code, X86_ADD, X86_ESP, 4);
422 x86_pop_reg (cfg->code, X86_EDX);
423 x86_pop_reg (cfg->code, X86_EAX);
426 if (mono_regset_reg_used (cfg->rs, X86_ESI))
427 x86_pop_reg (cfg->code, X86_ESI);
429 if (mono_regset_reg_used (cfg->rs, X86_EDI))
430 x86_pop_reg (cfg->code, X86_EDI);
432 if (mono_regset_reg_used (cfg->rs, X86_EBX))
433 x86_pop_reg (cfg->code, X86_EBX);
435 x86_leave (cfg->code);
440 mono_label_cfg (MonoFlowGraph *cfg)
444 for (i = 0; i < cfg->block_count; i++) {
445 GPtrArray *forest = cfg->bblocks [i].forest;
448 if (!cfg->bblocks [i].reached) /* unreachable code */
453 for (j = 0; j < top; j++) {
454 MBTree *t1 = (MBTree *) g_ptr_array_index (forest, j);
457 mbstate = mono_burg_label (t1, cfg);
461 if (mono_debug_handle)
463 g_warning ("tree does not match");
464 mono_print_ctree (t1); printf ("\n\n");
466 mono_print_forest (forest);
467 g_assert_not_reached ();
474 tree_allocate_regs (MBTree *tree, int goal, MonoRegSet *rs, guint8 exclude_mask, int *spillcount)
477 int ern = mono_burg_rule (tree->state, goal);
478 const guint16 *nts = mono_burg_nts [ern];
479 guint8 left_exclude_mask = 0, right_exclude_mask = 0;
482 #ifdef DEBUG_REGALLOC
483 printf ("tree_allocate_regs start %d %08x %d %d\n", tree->op, rs->free_mask, goal,
484 (nts [0] && kids [0] == tree));
487 mono_burg_kids (tree, ern, kids);
493 exclude_mask |= (1 << X86_ECX);
494 left_exclude_mask |= (1 << X86_ECX);
497 case MB_TERM_MUL_OVF:
498 case MB_TERM_MUL_OVF_UN:
503 if (goal == MB_NTERM_reg) {
504 left_exclude_mask |= (1 << X86_EDX);
505 right_exclude_mask |= (1 << X86_EDX) | (1 << X86_EAX);
512 if (nts [0] && kids [0] == tree) {
514 if (!tree_allocate_regs (kids [0], nts [0], rs, exclude_mask, spillcount))
516 /* special case reg: coni4 */
517 if (goal == MB_NTERM_reg) {
518 if (tree->reg1 == -1)
519 tree->reg1 = mono_regset_alloc_reg (rs, -1, exclude_mask);
520 if (tree->reg1 == -1)
542 if (nts [1]) { /* two kids */
544 if (nts [2]) /* we cant handle tree kids */
545 g_assert_not_reached ();
547 if (!tree_allocate_regs (kids [0], nts [0], rs, left_exclude_mask, spillcount))
552 if (!tree_allocate_regs (kids [1], nts [1], rs, right_exclude_mask, spillcount)) {
554 #ifdef DEBUG_REGALLOC
555 printf ("tree_allocate_regs try 1 failed %d %d %d %d\n",
556 nts [1], kids [1]->reg1,
557 kids [1]->reg2,kids [1]->reg3);
561 if (kids [0]->reg1 != -1) {
562 right_exclude_mask |= 1 << kids [0]->reg1;
565 if (kids [0]->reg2 != -1) {
566 right_exclude_mask |= 1 << kids [0]->reg2;
569 if (kids [0]->reg3 != -1) {
570 right_exclude_mask |= 1 << kids [0]->reg3;
574 mono_regset_free_reg (rs, kids [0]->reg1);
575 mono_regset_free_reg (rs, kids [0]->reg2);
576 mono_regset_free_reg (rs, kids [0]->reg3);
578 kids [0]->spilled = 1;
580 if (!tree_allocate_regs (kids [1], nts [1], rs, right_exclude_mask, spillcount)) {
581 #ifdef DEBUG_REGALLOC
582 printf ("tree_allocate_regs try 2 failed\n");
586 #ifdef DEBUG_REGALLOC
587 printf ("tree_allocate_regs try 2 succesfull\n");
591 } else { /* one kid */
592 if (!tree_allocate_regs (kids [0], nts [0], rs, left_exclude_mask, spillcount))
598 for (i = 0; nts [i]; i++) {
599 mono_regset_free_reg (rs, kids [i]->reg1);
600 mono_regset_free_reg (rs, kids [i]->reg2);
601 mono_regset_free_reg (rs, kids [i]->reg3);
604 tree->emit = mono_burg_func [ern];
607 case MB_TERM_CALL_I4:
608 case MB_TERM_CALL_I8:
609 case MB_TERM_CALL_R8:
610 // case MB_TERM_CALL_VOID :
611 if ((tree->reg1 = mono_regset_alloc_reg (rs, X86_EAX, exclude_mask)) == -1)
613 if ((tree->reg2 = mono_regset_alloc_reg (rs, X86_EDX, exclude_mask)) == -1)
615 if ((tree->reg3 = mono_regset_alloc_reg (rs, X86_ECX, exclude_mask)) == -1)
623 case MB_TERM_MUL_OVF_UN:
628 if ((tree->reg1 = mono_regset_alloc_reg (rs, X86_EAX, exclude_mask)) == -1)
630 if ((tree->reg2 = mono_regset_alloc_reg (rs, X86_EDX, exclude_mask)) == -1)
634 if ((tree->reg1 = mono_regset_alloc_reg (rs, -1, exclude_mask)) == -1)
642 case MB_TERM_MUL_OVF:
643 case MB_TERM_MUL_OVF_UN:
648 if ((tree->reg1 = mono_regset_alloc_reg (rs, X86_EAX, exclude_mask)) == -1)
650 if ((tree->reg2 = mono_regset_alloc_reg (rs, X86_EDX, exclude_mask)) == -1)
654 if ((tree->reg1 = mono_regset_alloc_reg (rs, -1, exclude_mask)) == -1)
656 if ((tree->reg2 = mono_regset_alloc_reg (rs, -1, exclude_mask)) == -1)
662 /* fixme: allocate floating point registers */
666 if (tree->op == MB_TERM_ADD) {
667 if ((tree->reg1 = mono_regset_alloc_reg (rs, tree->left->reg1, exclude_mask)) == -1)
669 if ((tree->reg2 = mono_regset_alloc_reg (rs, tree->right->reg1, exclude_mask)) == -1)
675 if (tree->op == MB_TERM_ADD) {
676 if ((tree->reg1 = mono_regset_alloc_reg (rs, tree->left->reg1, exclude_mask)) == -1)
682 if (tree->op == MB_TERM_SHL ||
683 tree->op == MB_TERM_MUL) {
684 if ((tree->reg1 = mono_regset_alloc_reg (rs, tree->left->reg1, exclude_mask)) == -1)
693 #ifdef DEBUG_REGALLOC
694 printf ("tree_allocate_regs end %d %08x\n", tree->op, rs->free_mask);
700 arch_allocate_regs (MonoFlowGraph *cfg)
702 int i, j, max_spillcount = 0;
704 for (i = 0; i < cfg->block_count; i++) {
705 GPtrArray *forest = cfg->bblocks [i].forest;
708 if (!cfg->bblocks [i].reached) /* unreachable code */
713 for (j = 0; j < top; j++) {
714 MBTree *t1 = (MBTree *) g_ptr_array_index (forest, j);
716 #ifdef DEBUG_REGALLOC
717 printf ("arch_allocate_regs start %d:%d %08x\n", i, j, cfg->rs->free_mask);
719 if (!tree_allocate_regs (t1, 1, cfg->rs, 0, &spillcount)) {
720 mono_print_ctree (t1);
721 g_error ("register allocation failed");
724 max_spillcount = MAX (max_spillcount, spillcount);
726 #ifdef DEBUG_REGALLOC
727 printf ("arch_allocate_regs end %d:%d %08x\n", i, j, cfg->rs->free_mask);
729 g_assert (cfg->rs->free_mask == 0xffffffff);
733 /* allocate space for spilled regs */
735 cfg->spillvars = mono_mempool_alloc0 (cfg->mp, sizeof (gint) * max_spillcount);
736 cfg->spillcount = max_spillcount;
738 for (i = 0; i < max_spillcount; i++) {
740 spillvar = arch_allocate_var (cfg, sizeof (gpointer), sizeof (gpointer),
741 MONO_TEMPVAR, VAL_I32);
742 cfg->spillvars [i] = VAROFFSET (cfg, spillvar);
747 tree_emit (int goal, MonoFlowGraph *cfg, MBTree *tree, int *spillcount)
750 int ern = mono_burg_rule (tree->state, goal);
751 const guint16 *nts = mono_burg_nts [ern];
755 mono_burg_kids (tree, ern, kids);
759 int spilloffset1, spilloffset2, spilloffset3;
762 g_assert_not_reached ();
764 tree_emit (nts [0], cfg, kids [0], spillcount);
766 if (kids [0]->spilled) {
768 printf ("SPILL_REGS %d %03x %s.%s:%s\n",
769 nts [0], cfg->code - cfg->start,
770 cfg->method->klass->name_space,
771 cfg->method->klass->name, cfg->method->name);
773 mono_print_ctree (kids [0]);printf ("\n\n");
779 if (kids [0]->reg1 != -1) {
780 spilloffset1 = cfg->spillvars [(*spillcount)++];
781 x86_mov_membase_reg (cfg->code, X86_EBP, spilloffset1,
784 if (kids [0]->reg2 != -1) {
785 spilloffset2 = cfg->spillvars [(*spillcount)++];
786 x86_mov_membase_reg (cfg->code, X86_EBP, spilloffset2,
789 if (kids [0]->reg3 != -1) {
790 spilloffset3 = cfg->spillvars [(*spillcount)++];
791 x86_mov_membase_reg (cfg->code, X86_EBP, spilloffset3,
796 tree_emit (nts [1], cfg, kids [1], spillcount);
798 if (kids [0]->spilled) {
801 printf ("RELOAD_REGS %03x %s.%s:%s\n",
802 cfg->code - cfg->start,
803 cfg->method->klass->name_space,
804 cfg->method->klass->name, cfg->method->name);
807 if (kids [0]->reg3 != -1)
808 x86_mov_reg_membase (cfg->code, kids [0]->reg3, X86_EBP,
810 if (kids [0]->reg2 != -1)
811 x86_mov_reg_membase (cfg->code, kids [0]->reg2, X86_EBP,
813 if (kids [0]->reg1 != -1)
814 x86_mov_reg_membase (cfg->code, kids [0]->reg1, X86_EBP,
818 tree_emit (nts [0], cfg, kids [0], spillcount);
822 g_assert ((*spillcount) <= cfg->spillcount);
824 tree->addr = offset = cfg->code - cfg->start;
826 // we assume an instruction uses a maximum of 128 bytes
827 if ((cfg->code_size - offset) <= 128) {
828 int add = MIN (cfg->code_size, 128);
829 cfg->code_size += add;
830 mono_jit_stats.code_reallocs++;
831 cfg->start = g_realloc (cfg->start, cfg->code_size);
832 g_assert (cfg->start);
833 cfg->code = cfg->start + offset;
836 if ((emit = mono_burg_func [ern]))
839 g_assert ((cfg->code - cfg->start) < cfg->code_size);
843 mono_emit_cfg (MonoFlowGraph *cfg)
845 int i, j, spillcount;
847 for (i = 0; i < cfg->block_count; i++) {
848 MonoBBlock *bb = &cfg->bblocks [i];
849 GPtrArray *forest = bb->forest;
852 if (!bb->reached) /* unreachable code */
857 bb->addr = cfg->code - cfg->start;
859 for (j = 0; j < top; j++) {
860 MBTree *t1 = (MBTree *) g_ptr_array_index (forest, j);
863 tree_emit (1, cfg, t1, &spillcount);
867 cfg->epilog = cfg->code - cfg->start;
871 mono_compute_branches (MonoFlowGraph *cfg)
879 for (j = 0; j < cfg->block_count; j++) {
880 MonoBBlock *bb = &cfg->bblocks [j];
881 GPtrArray *forest = bb->forest;
884 if (!bb->reached) /* unreachable code */
889 for (i = 0; i < top; i++) {
890 MBTree *t1 = (MBTree *) g_ptr_array_index (forest, i);
892 if (t1->op == MB_TERM_SWITCH) {
893 MonoBBlock **jt = (MonoBBlock **)t1->data.p;
894 guint32 *rt = (guint32 *)t1->data.p;
895 int m = *((guint32 *)t1->data.p) + 1;
898 for (k = 1; k <= m; k++)
899 rt [k] = (int)(jt [k]->addr + cfg->start);
901 /* emit the switch instruction again to update addresses */
902 cfg->code = cfg->start + t1->addr;
903 ((MBEmitFunc)t1->emit) (t1, cfg);
910 for (ji = cfg->jump_info; ji; ji = ji->next) {
911 gpointer *ip = GUINT_TO_POINTER (GPOINTER_TO_UINT (ji->ip) + cfg->start);
915 case MONO_JUMP_INFO_BB:
916 target = ji->data.bb->addr + cfg->start;
917 *ip = target - GPOINTER_TO_UINT(ip) - 4;
919 case MONO_JUMP_INFO_ABS:
920 target = ji->data.target;
921 *ip = target - GPOINTER_TO_UINT(ip) - 4;
923 case MONO_JUMP_INFO_EPILOG:
924 target = cfg->epilog + cfg->start;
925 *ip = target - GPOINTER_TO_UINT(ip) - 4;
927 case MONO_JUMP_INFO_IP:
931 g_assert_not_reached ();
937 mono_add_jump_info (MonoFlowGraph *cfg, gpointer ip, MonoJumpInfoType type, gpointer target)
939 MonoJumpInfo *ji = mono_mempool_alloc (cfg->mp, sizeof (MonoJumpInfo));
942 ji->ip = GUINT_TO_POINTER (GPOINTER_TO_UINT (ip) - GPOINTER_TO_UINT (cfg->start));
943 ji->data.target = target;
944 ji->next = cfg->jump_info;
950 match_debug_method (MonoMethod* method)
952 GList *tmp = mono_debug_methods;
954 for (; tmp; tmp = tmp->next) {
955 if (mono_method_desc_full_match (tmp->data, method))
962 * arch_compile_method:
963 * @method: pointer to the method info
965 * JIT compilation of a single method.
967 * Returns: a pointer to the newly created code.
970 arch_compile_method (MonoMethod *method)
972 MonoDomain *target_domain, *domain = mono_domain_get ();
975 GHashTable *jit_code_hash;
977 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
978 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
980 method->info = arch_create_native_wrapper (method);
984 if (mono_jit_share_code)
985 target_domain = mono_root_domain;
987 target_domain = domain;
989 jit_code_hash = target_domain->jit_code_hash;
991 if ((addr = g_hash_table_lookup (jit_code_hash, method))) {
992 mono_jit_stats.methods_lookups++;
996 mono_jit_stats.methods_compiled++;
998 if (mono_jit_trace_calls || mono_jit_dump_asm || mono_jit_dump_forest) {
999 printf ("Start JIT compilation of %s.%s:%s\n", method->klass->name_space,
1000 method->klass->name, method->name);
1003 if (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) {
1004 const char *name = method->name;
1006 gboolean delegate = FALSE;
1008 if (method->klass->parent == mono_defaults.multicastdelegate_class)
1011 if (delegate && *name == '.' && (strcmp (name, ".ctor") == 0)) {
1012 addr = (gpointer)mono_delegate_ctor;
1013 } else if (delegate && *name == 'I' && (strcmp (name, "Invoke") == 0)) {
1016 addr = arch_get_delegate_invoke (method, &size);
1018 if (mono_jit_dump_asm) {
1019 char *id = g_strdup_printf ("%s.%s_%s", method->klass->name_space,
1020 method->klass->name, method->name);
1021 mono_disassemble_code (addr, size, id);
1024 } else if (delegate && *name == 'B' && (strcmp (name, "BeginInvoke") == 0)) {
1025 code = addr = g_malloc (32);
1026 x86_push_imm (code, method);
1027 x86_call_code (code, arch_begin_invoke);
1028 x86_alu_reg_imm (code, X86_ADD, X86_ESP, 4);
1030 g_assert ((code - addr) <= 32);
1031 } else if (delegate && *name == 'E' && (strcmp (name, "EndInvoke") == 0)) {
1032 /* this can raise exceptions, so we need a wrapper to save/restore LMF */
1033 method->addr = (gpointer)arch_end_invoke;
1034 addr = arch_create_native_wrapper (method);
1036 mono_profiler_method_end_jit (method, MONO_PROFILE_FAILED);
1037 if (mono_debug_handle)
1040 g_error ("Don't know how to exec runtime method %s.%s::%s",
1041 method->klass->name_space, method->klass->name, method->name);
1045 MonoMethodHeader *header = ((MonoMethodNormal *)method)->header;
1048 gulong code_size_ratio;
1050 mono_profiler_method_jit (method);
1052 ji = mono_mempool_alloc0 (target_domain->mp, sizeof (MonoJitInfo));
1054 mp = mono_mempool_new ();
1056 cfg = mono_cfg_new (method, mp);
1058 mono_analyze_flow (cfg);
1060 mono_profiler_method_end_jit (method, MONO_PROFILE_FAILED);
1064 mono_analyze_stack (cfg);
1066 mono_profiler_method_end_jit (method, MONO_PROFILE_FAILED);
1070 cfg->rs = mono_regset_new (X86_NREG);
1071 mono_regset_reserve_reg (cfg->rs, X86_ESP);
1072 mono_regset_reserve_reg (cfg->rs, X86_EBP);
1074 /* we can use this regs for global register allocation */
1075 mono_regset_reserve_reg (cfg->rs, X86_EBX);
1076 mono_regset_reserve_reg (cfg->rs, X86_ESI);
1078 cfg->code_size = MAX (header->code_size * 5, 256);
1079 cfg->start = cfg->code = g_malloc (cfg->code_size);
1081 mono_debug_last_breakpoint_address = cfg->code;
1083 if (match_debug_method (method) || mono_debug_insert_breakpoint)
1084 x86_breakpoint (cfg->code);
1085 else if (mono_debug_handle)
1086 x86_nop (cfg->code);
1088 if (mono_debug_insert_breakpoint > 0)
1089 mono_debug_insert_breakpoint--;
1091 if (mono_jit_dump_forest) {
1093 printf ("FOREST %s.%s:%s\n", method->klass->name_space,
1094 method->klass->name, method->name);
1095 for (i = 0; i < cfg->block_count; i++) {
1096 printf ("BLOCK %d:\n", i);
1097 mono_print_forest (cfg->bblocks [i].forest);
1101 mono_label_cfg (cfg);
1103 mono_profiler_method_end_jit (method, MONO_PROFILE_FAILED);
1107 arch_allocate_regs (cfg);
1109 /* align to 8 byte boundary */
1110 cfg->locals_size += 7;
1111 cfg->locals_size &= ~7;
1113 arch_emit_prologue (cfg);
1114 cfg->prologue_end = cfg->code - cfg->start;
1115 mono_emit_cfg (cfg);
1116 arch_emit_epilogue (cfg);
1117 cfg->epilogue_end = cfg->code - cfg->start;
1121 mono_jit_stats.allocated_code_size += cfg->code_size;
1123 code_size_ratio = cfg->code - cfg->start;
1124 if (code_size_ratio > mono_jit_stats.biggest_method_size) {
1125 mono_jit_stats.biggest_method_size = code_size_ratio;
1126 mono_jit_stats.biggest_method = method;
1128 code_size_ratio = (code_size_ratio * 100) / header->code_size;
1129 if (code_size_ratio > mono_jit_stats.max_code_size_ratio) {
1130 mono_jit_stats.max_code_size_ratio = code_size_ratio;
1131 mono_jit_stats.max_ratio_method = method;
1134 mono_compute_branches (cfg);
1136 if (mono_jit_dump_asm) {
1137 char *id = g_strdup_printf ("%s.%s_%s", method->klass->name_space,
1138 method->klass->name, method->name);
1139 mono_disassemble_code (cfg->start, cfg->code - cfg->start, id);
1142 if (mono_debug_handle)
1143 mono_debug_add_method (mono_debug_handle, cfg);
1145 ji->code_size = cfg->code - cfg->start;
1146 ji->used_regs = cfg->rs->used_mask;
1147 ji->method = method;
1148 ji->code_start = addr;
1150 mono_jit_stats.native_code_size += ji->code_size;
1152 if (header->num_clauses) {
1153 int i, start_block, end_block;
1155 ji->num_clauses = header->num_clauses;
1156 ji->clauses = mono_mempool_alloc0 (target_domain->mp,
1157 sizeof (MonoJitExceptionInfo) * header->num_clauses);
1159 for (i = 0; i < header->num_clauses; i++) {
1160 MonoExceptionClause *ec = &header->clauses [i];
1161 MonoJitExceptionInfo *ei = &ji->clauses [i];
1163 ei->flags = ec->flags;
1164 ei->token_or_filter = ec->token_or_filter;
1166 g_assert (cfg->bcinfo [ec->try_offset].is_block_start);
1167 start_block = cfg->bcinfo [ec->try_offset].block_id;
1168 end_block = cfg->bcinfo [ec->try_offset + ec->try_len].block_id;
1169 g_assert (cfg->bcinfo [ec->try_offset + ec->try_len].is_block_start);
1171 ei->try_start = cfg->start + cfg->bblocks [start_block].addr;
1172 ei->try_end = cfg->start + cfg->bblocks [end_block].addr;
1174 g_assert (cfg->bcinfo [ec->handler_offset].is_block_start);
1175 start_block = cfg->bcinfo [ec->handler_offset].block_id;
1176 ei->handler_start = cfg->start + cfg->bblocks [start_block].addr;
1178 //printf ("TEST %x %x %x\n", ei->try_start, ei->try_end, ei->handler_start);
1182 mono_jit_info_table_add (target_domain, ji);
1184 mono_regset_free (cfg->rs);
1186 mono_cfg_free (cfg);
1188 mono_mempool_destroy (mp);
1190 mono_profiler_method_end_jit (method, MONO_PROFILE_OK);
1193 if (mono_jit_trace_calls || mono_jit_dump_asm || mono_jit_dump_forest) {
1194 printf ("END JIT compilation of %s.%s:%s %p %p\n", method->klass->name_space,
1195 method->klass->name, method->name, method, addr);
1198 g_hash_table_insert (jit_code_hash, method, addr);