/*
- * trampolinesparc.c: JIT trampoline code for Sparc 64
+ * tramp-sparc.c: JIT trampoline code for Sparc 64
*
* Authors:
* Mark Crichton (crichton@gimp.org)
#include "mini.h"
#include "mini-sparc.h"
-#warning NotReady
+typedef enum {
+ MONO_TRAMPOLINE_GENERIC,
+ MONO_TRAMPOLINE_JUMP,
+ MONO_TRAMPOLINE_CLASS_INIT
+} MonoTrampolineType;
/* adapt to mini later... */
#define mono_jit_share_code (1)
get_unbox_trampoline (MonoMethod *m, gpointer addr)
{
guint8 *code, *start;
- int this_pos = 4;
+ int this_pos = 4, reg;
if (!m->signature->ret->byref && MONO_TYPE_ISSTRUCT (m->signature->ret))
this_pos = 8;
- start = code = g_malloc (16);
+ start = code = g_malloc (36);
+
+ /* This executes in the context of the caller, hence o0 */
+ sparc_add_imm (code, 0, sparc_o0, sizeof (MonoObject), sparc_o0);
+#ifdef SPARCV9
+ reg = sparc_g4;
+#else
+ reg = sparc_g1;
+#endif
+ sparc_set (code, addr, reg);
+ sparc_jmpl (code, reg, sparc_g0, sparc_g0);
+ sparc_nop (code);
+
+ g_assert ((code - start) <= 36);
- //x86_alu_membase_imm (code, X86_ADD, X86_ESP, this_pos, sizeof (MonoObject));
- //x86_jump_code (code, addr);
- g_assert ((code - start) < 16);
+ mono_arch_flush_icache (start, code - start);
return start;
}
/**
- * x86_magic_trampoline:
- * @eax: saved x86 register
- * @ecx: saved x86 register
- * @edx: saved x86 register
- * @esi: saved x86 register
- * @edi: saved x86 register
- * @ebx: saved x86 register
- * @code: pointer into caller code
- * @method: the method to translate
+ * sparc_magic_trampoline:
+ * @m: the method to translate
+ * @code: the address of the call instruction
+ * @fp: address of the stack frame for the caller
*
- * This method is called by the trampoline functions for virtual
- * methods. It inspects the caller code to find the address of the
- * vtable slot, then calls the JIT compiler and writes the address
- * of the compiled method back to the vtable. All virtual methods
- * are called with: x86_call_membase (inst, basereg, disp). We always
- * use 32 bit displacement to ensure that the length of the call
- * instruction is 6 bytes. We need to get the value of the basereg
- * and the constant displacement.
+ * This method is called by the trampoline functions for methods. It calls the
+ * JIT compiler to compile the method, then patches the calling instruction so
+ * further calls will bypass the trampoline. For virtual methods, it finds the
+ * address of the vtable slot and updates it.
*/
static gpointer
-x86_magic_trampoline (int eax, int ecx, int edx, int esi, int edi,
- int ebx, guint8 *code, MonoMethod *m)
+sparc_magic_trampoline (MonoMethod *m, guint32 *code, guint32 *fp)
{
- guint8 reg;
- gint32 disp;
- char *o;
gpointer addr;
+ gpointer *vtable_slot;
addr = mono_compile_method (m);
g_assert (addr);
- /* the method was jumped to */
- if (!code)
- return addr;
-
- /* go to the start of the call instruction
- *
- * address_byte = (m << 6) | (o << 3) | reg
- * call opcode: 0xff address_byte displacement
- * 0xff m=1,o=2 imm8
- * 0xff m=2,o=2 imm32
+ /*
+ * Check whenever this is a virtual call, and call an unbox trampoline if
+ * needed.
*/
- code -= 6;
- if ((code [1] != 0xe8) && (code [3] == 0xff) && ((code [4] & 0x18) == 0x10) && ((code [4] >> 6) == 1)) {
- reg = code [4] & 0x07;
- disp = (signed char)code [5];
- } else {
- if ((code [0] == 0xff) && ((code [1] & 0x18) == 0x10) && ((code [1] >> 6) == 2)) {
- reg = code [1] & 0x07;
- disp = *((gint32*)(code + 2));
- } else if ((code [1] == 0xe8)) {
- *((guint32*)(code + 2)) = (guint)addr - ((guint)code + 1) - 5;
- return addr;
- } else if ((code [4] == 0xff) && (((code [5] >> 6) & 0x3) == 0) && (((code [5] >> 3) & 0x7) == 2)) {
- /*
- * This is a interface call: should check the above code can't catch it earlier
- * 8b 40 30 mov 0x30(%eax),%eax
- * ff 10 call *(%eax)
- */
- disp = 0;
- reg = code [5] & 0x07;
- } else {
- printf ("Invalid trampoline sequence: %x %x %x %x %x %x %x\n", code [0], code [1], code [2], code [3],
- code [4], code [5], code [6]);
- g_assert_not_reached ();
- }
+ if (mono_sparc_is_virtual_call (code)) {
+ if (m->klass->valuetype)
+ addr = get_unbox_trampoline (m, addr);
+
+ /* Compute address of vtable slot */
+ vtable_slot = mono_sparc_get_vcall_slot_addr (code, fp);
+ *vtable_slot = addr;
+ }
+ else {
+ /* Patch calling code */
+ if (sparc_inst_op (*code) == 0x1)
+ sparc_call_simple (code, (guint8*)addr - (guint8*)code);
}
- o += disp;
+ return addr;
+}
- if (m->klass->valuetype) {
- return *((gpointer *)o) = get_unbox_trampoline (m, addr);
- } else {
- return *((gpointer *)o) = addr;
- }
+static void
+sparc_class_init_trampoline (MonoVTable *vtable, guint32 *code)
+{
+ mono_runtime_class_init (vtable);
+
+ /* Patch calling code */
+ sparc_nop (code);
}
+#define ALIGN_TO(val,align) (((val) + ((align) - 1)) & ~((align) - 1))
+
static guchar*
-create_trampoline_code (int is_jump)
+create_trampoline_code (MonoTrampolineType tramp_type)
{
- guint8 *buf, *code;
+ guint8 *buf, *code, *tramp_addr;
+ guint32 lmf_offset, method_reg, i;
static guint8* generic_jump_trampoline = NULL;
-
- if (is_jump) {
- if (generic_jump_trampoline)
- return generic_jump_trampoline;
- } else {
+ static guint8 *generic_class_init_trampoline = NULL;
+
+ switch (tramp_type) {
+ case MONO_TRAMPOLINE_GENERIC:
if (mono_generic_trampoline_code)
return mono_generic_trampoline_code;
+ break;
+ case MONO_TRAMPOLINE_JUMP:
+ if (generic_jump_trampoline)
+ return generic_jump_trampoline;
+ break;
+ case MONO_TRAMPOLINE_CLASS_INIT:
+ if (generic_class_init_trampoline)
+ return generic_class_init_trampoline;
+ break;
}
-
- code = buf = g_malloc (256);
- /* save caller save regs because we need to do a call */
- //x86_push_reg (buf, X86_EDX);
- //x86_push_reg (buf, X86_EAX);
- //x86_push_reg (buf, X86_ECX);
-
-#if 0
- /* save the IP (caller ip) */
- if (is_jump)
- x86_push_imm (buf, 0);
+
+ code = buf = g_malloc (512);
+
+ sparc_save_imm (code, sparc_sp, -608, sparc_sp);
+
+#ifdef SPARCV9
+ method_reg = sparc_g4;
+#else
+ method_reg = sparc_g1;
+#endif
+
+#ifdef SPARCV9
+ /* Save fp regs since they are not preserved by calls */
+ for (i = 0; i < 16; i ++)
+ sparc_stdf_imm (code, sparc_f0 + (i * 2), sparc_sp, MONO_SPARC_STACK_BIAS + 320 + (i * 8));
+#endif
+
+ /* We receive the method address in %r1, so save it here */
+ sparc_sti_imm (code, method_reg, sparc_sp, MONO_SPARC_STACK_BIAS + 200);
+
+ /* Save lmf since compilation can raise exceptions */
+ lmf_offset = MONO_SPARC_STACK_BIAS - sizeof (MonoLMF);
+
+ /* Save the data for the parent (managed) frame */
+
+ /* Save ip */
+ sparc_sti_imm (code, sparc_i7, sparc_fp, lmf_offset + G_STRUCT_OFFSET (MonoLMF, ip));
+ /* Save sp */
+ sparc_sti_imm (code, sparc_fp, sparc_fp, lmf_offset + G_STRUCT_OFFSET (MonoLMF, sp));
+ /* Save fp */
+ /* Load previous fp from the saved register window */
+ sparc_flushw (code);
+ sparc_ldi_imm (code, sparc_fp, MONO_SPARC_STACK_BIAS + (sparc_i6 - 16) * sizeof (gpointer), sparc_o7);
+ sparc_sti_imm (code, sparc_o7, sparc_fp, lmf_offset + G_STRUCT_OFFSET (MonoLMF, ebp));
+ /* Save method */
+ sparc_sti_imm (code, method_reg, sparc_fp, lmf_offset + G_STRUCT_OFFSET (MonoLMF, method));
+
+ sparc_set (code, mono_get_lmf_addr, sparc_o7);
+ sparc_jmpl (code, sparc_o7, sparc_g0, sparc_o7);
+ sparc_nop (code);
+
+ code = mono_sparc_emit_save_lmf (code, lmf_offset);
+
+ if (tramp_type == MONO_TRAMPOLINE_CLASS_INIT)
+ tramp_addr = &sparc_class_init_trampoline;
else
- x86_push_membase (buf, X86_ESP, 16);
-
- x86_push_reg (buf, X86_EBX);
- x86_push_reg (buf, X86_EDI);
- x86_push_reg (buf, X86_ESI);
- x86_push_reg (buf, X86_EBP);
-
- /* save method info */
- x86_push_membase (buf, X86_ESP, 32);
- /* get the address of lmf for the current thread */
- x86_call_code (buf, mono_get_lmf_addr);
- /* push lmf */
- x86_push_reg (buf, X86_EAX);
- /* push *lfm (previous_lmf) */
- x86_push_membase (buf, X86_EAX, 0);
- /* *(lmf) = ESP */
- x86_mov_membase_reg (buf, X86_EAX, 0, X86_ESP, 4);
- /* save LFM end */
-
- /* push the method info */
- x86_push_membase (buf, X86_ESP, 44);
- /* push the return address onto the stack */
- if (is_jump)
- x86_push_imm (buf, 0);
+ tramp_addr = &sparc_magic_trampoline;
+ sparc_ldi_imm (code, sparc_sp, MONO_SPARC_STACK_BIAS + 200, sparc_o0);
+ /* pass parent frame address as third argument */
+ sparc_mov_reg_reg (code, sparc_fp, sparc_o2);
+ sparc_set (code, tramp_addr, sparc_o7);
+ /* set %o1 to caller address */
+ sparc_mov_reg_reg (code, sparc_i7, sparc_o1);
+ sparc_jmpl (code, sparc_o7, sparc_g0, sparc_o7);
+ sparc_nop (code);
+
+ /* Save result */
+ sparc_sti_imm (code, sparc_o0, sparc_sp, MONO_SPARC_STACK_BIAS + 304);
+
+ /* Restore lmf */
+ code = mono_sparc_emit_restore_lmf (code, lmf_offset);
+
+ /* Reload result */
+ sparc_ldi_imm (code, sparc_sp, MONO_SPARC_STACK_BIAS + 304, sparc_o0);
+
+#ifdef SPARCV9
+ /* Reload fp regs */
+ for (i = 0; i < 16; i ++)
+ sparc_lddf_imm (code, sparc_sp, MONO_SPARC_STACK_BIAS + 320 + (i * 8), sparc_f0 + (i * 2));
+#endif
+
+ if (tramp_type == MONO_TRAMPOLINE_CLASS_INIT)
+ sparc_ret (code);
else
- x86_push_membase (buf, X86_ESP, 52);
-
- /* save all register values */
- x86_push_reg (buf, X86_EBX);
- x86_push_reg (buf, X86_EDI);
- x86_push_reg (buf, X86_ESI);
- x86_push_membase (buf, X86_ESP, 64); /* EDX */
- x86_push_membase (buf, X86_ESP, 64); /* ECX */
- x86_push_membase (buf, X86_ESP, 64); /* EAX */
-
- x86_call_code (buf, x86_magic_trampoline);
- x86_alu_reg_imm (buf, X86_ADD, X86_ESP, 8*4);
-
- /* restore LMF start */
- /* ebx = previous_lmf */
- x86_pop_reg (buf, X86_EBX);
- /* edi = lmf */
- x86_pop_reg (buf, X86_EDI);
- /* *(lmf) = previous_lmf */
- x86_mov_membase_reg (buf, X86_EDI, 0, X86_EBX, 4);
- /* discard method info */
- x86_pop_reg (buf, X86_ESI);
- /* restore caller saved regs */
- x86_pop_reg (buf, X86_EBP);
- x86_pop_reg (buf, X86_ESI);
- x86_pop_reg (buf, X86_EDI);
- x86_pop_reg (buf, X86_EBX);
- /* discard save IP */
- x86_alu_reg_imm (buf, X86_ADD, X86_ESP, 4);
- /* restore LMF end */
-
- x86_alu_reg_imm (buf, X86_ADD, X86_ESP, 16);
-
- /* call the compiled method */
- x86_jump_reg (buf, X86_EAX);
-#endif
+ sparc_jmpl (code, sparc_o0, sparc_g0, sparc_g0);
+
+ /* restore previous frame in delay slot */
+ sparc_restore_simple (code);
- g_assert ((buf - code) <= 256);
+/*
+{
+ gpointer addr;
- if (is_jump) {
- return generic_jump_trampoline = code;
- } else {
- return mono_generic_trampoline_code = code;
+ sparc_save_imm (code, sparc_sp, -608, sparc_sp);
+ addr = code;
+ sparc_call_simple (code, 16);
+ sparc_nop (code);
+ sparc_rett_simple (code);
+ sparc_nop (code);
+
+ sparc_save_imm (code, sparc_sp, -608, sparc_sp);
+ sparc_ta (code, 1);
+ tramp_addr = &sparc_magic_trampoline;
+ sparc_call_simple (code, tramp_addr - code);
+ sparc_nop (code);
+ sparc_rett_simple (code);
+ sparc_nop (code);
+}
+*/
+
+ g_assert ((code - buf) <= 512);
+
+ switch (tramp_type) {
+ case MONO_TRAMPOLINE_GENERIC:
+ mono_generic_trampoline_code = buf;
+ break;
+ case MONO_TRAMPOLINE_JUMP:
+ generic_jump_trampoline = buf;
+ break;
+ case MONO_TRAMPOLINE_CLASS_INIT:
+ generic_class_init_trampoline = buf;
+ break;
}
+
+ mono_arch_flush_icache (buf, code - buf);
+
+ return buf;
}
-#define TRAMPOLINE_SIZE 10
+#define TRAMPOLINE_SIZE (((SPARC_SET_MAX_SIZE >> 2) * 2) + 2)
-gpointer
-mono_arch_create_jump_trampoline (MonoMethod *method)
+static MonoJitInfo*
+create_specific_trampoline (gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain)
{
- guint8 *code, *buf, *tramp;
+ MonoJitInfo *ji;
+ guint32 *code, *buf, *tramp;
- if (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
- return mono_arch_create_jump_trampoline (mono_marshal_get_synchronized_wrapper (method));
-
- /* icalls use method->addr */
- if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
- (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
- MonoMethod *nm;
-
- if (!method->addr && (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL))
- mono_lookup_pinvoke_call (method);
-
-#ifdef MONO_USE_EXC_TABLES
- if (mono_method_blittable (method)) {
- return method->addr;
- } else {
-#endif
- nm = mono_marshal_get_native_wrapper (method);
- return mono_compile_method (nm);
-#ifdef MONO_USE_EXC_TABLES
- }
+ tramp = create_trampoline_code (tramp_type);
+
+ mono_domain_lock (domain);
+ code = buf = mono_code_manager_reserve (domain->code_mp, TRAMPOLINE_SIZE * 4);
+ mono_domain_unlock (domain);
+
+ /* We have to use g5 here because there is no other free register */
+ sparc_set (code, tramp, sparc_g5);
+#ifdef SPARCV9
+ sparc_set (code, arg1, sparc_g4);
+#else
+ sparc_set (code, arg1, sparc_g1);
#endif
- }
-
- tramp = create_trampoline_code (TRUE);
+ sparc_jmpl (code, sparc_g5, sparc_g0, sparc_g0);
+ sparc_nop (code);
- code = buf = g_malloc (TRAMPOLINE_SIZE);
- //x86_push_imm (buf, method);
- //x86_jump_code (buf, tramp);
- g_assert ((buf - code) <= TRAMPOLINE_SIZE);
+ g_assert ((code - buf) <= TRAMPOLINE_SIZE);
+
+ ji = g_new0 (MonoJitInfo, 1);
+ ji->code_start = buf;
+ ji->code_size = (code - buf) * 4;
mono_jit_stats.method_trampolines++;
- return code;
+ mono_arch_flush_icache (ji->code_start, ji->code_size);
+
+ return ji;
+}
+
+MonoJitInfo*
+mono_arch_create_jump_trampoline (MonoMethod *method)
+{
+ MonoJitInfo *ji = create_specific_trampoline (method, MONO_TRAMPOLINE_JUMP, mono_domain_get ());
+ ji->method = method;
+ return ji;
}
/**
* Creates a trampoline function for virtual methods. If the created
* code is called it first starts JIT compilation of method,
* and then calls the newly created method. I also replaces the
- * corresponding vtable entry (see x86_magic_trampoline).
+ * corresponding vtable entry (see sparc_magic_trampoline).
*
* Returns: a pointer to the newly created code
*/
gpointer
mono_arch_create_jit_trampoline (MonoMethod *method)
{
- guint8 *code, *buf;
+ MonoJitInfo *ji;
/* previously created trampoline code */
if (method->info)
return method->info;
- /* we immediately compile runtime provided functions */
- if (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) {
- method->info = mono_compile_method (method);
- return method->info;
- }
-
- /* icalls use method->addr */
- if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
- (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
- MonoMethod *nm;
-
- if (!method->addr && (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL))
- mono_lookup_pinvoke_call (method);
-
-#ifdef MONO_USE_EXC_TABLES
- if (mono_method_blittable (method)) {
- method->info = method->addr;
- } else {
-#endif
- nm = mono_marshal_get_native_wrapper (method);
- method->info = mono_compile_method (nm);
-#ifdef MONO_USE_EXC_TABLES
- }
-#endif
- return method->info;
- }
-
if (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
return mono_arch_create_jit_trampoline (mono_marshal_get_synchronized_wrapper (method));
- create_trampoline_code (FALSE);
+ ji = create_specific_trampoline (method, MONO_TRAMPOLINE_GENERIC, mono_domain_get ());
+ method->info = ji->code_start;
+ g_free (ji);
- code = buf = g_malloc (TRAMPOLINE_SIZE);
- //x86_push_imm (buf, method);
- //x86_jump_code (buf, mono_generic_trampoline_code);
- g_assert ((buf - code) <= TRAMPOLINE_SIZE);
+ return method->info;
+}
- /* store trampoline address */
- method->info = code;
+/**
+ * mono_arch_create_class_init_trampoline:
+ * @vtable: the type to initialize
+ *
+ * Creates a trampoline function to run a type initializer.
+ * If the trampoline is called, it calls mono_runtime_class_init with the
+ * given vtable, then patches the caller code so it does not get called any
+ * more.
+ *
+ * Returns: a pointer to the newly created code
+ */
+gpointer
+mono_arch_create_class_init_trampoline (MonoVTable *vtable)
+{
+ MonoJitInfo *ji;
+ gpointer code;
- mono_jit_stats.method_trampolines++;
+ ji = create_specific_trampoline (vtable, MONO_TRAMPOLINE_CLASS_INIT, vtable->domain);
+ code = ji->code_start;
+ g_free (ji);
return code;
}
guint8 *ptr, *buf;
ptr = buf = g_malloc0 (16);
- //x86_breakpoint (buf);
if (notification_address)
*notification_address = buf;
- //x86_ret (buf);
+
+ g_assert_not_reached ();
return ptr;
}
-
projects / mono.git / blobdiff