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Rebased from gcc

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This commit is contained in:
Anthony Green
2012-02-10 13:06:46 -05:00
parent 4130e1972d
commit dee20f8e45
45 changed files with 1221 additions and 182 deletions
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36
src/x86/ffi.c
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@@ -428,6 +428,8 @@ void FFI_HIDDEN ffi_closure_raw_SYSV (ffi_raw_closure *)
#ifdef X86_WIN32
void FFI_HIDDEN ffi_closure_STDCALL (ffi_closure *)
__attribute__ ((regparm(1)));
void FFI_HIDDEN ffi_closure_THISCALL (ffi_closure *)
__attribute__ ((regparm(1)));
#endif
#ifdef X86_WIN64
void FFI_HIDDEN ffi_closure_win64 (ffi_closure *);
@@ -587,6 +589,33 @@ ffi_prep_incoming_args_SYSV(char *stack, void **rvalue, void **avalue,
*(unsigned int*) &__tramp[6] = __dis; /* jmp __fun */ \
}
#define FFI_INIT_TRAMPOLINE_THISCALL(TRAMP,FUN,CTX,SIZE) \
{ unsigned char *__tramp = (unsigned char*)(TRAMP); \
unsigned int __fun = (unsigned int)(FUN); \
unsigned int __ctx = (unsigned int)(CTX); \
unsigned int __dis = __fun - (__ctx + 22); \
unsigned short __size = (unsigned short)(SIZE); \
*(unsigned int *) &__tramp[0] = 0x8324048b; /* mov (%esp), %eax */ \
*(unsigned int *) &__tramp[4] = 0x4c890cec; /* sub $12, %esp */ \
*(unsigned int *) &__tramp[8] = 0x04890424; /* mov %ecx, 4(%esp) */ \
*(unsigned char*) &__tramp[12] = 0x24; /* mov %eax, (%esp) */ \
*(unsigned char*) &__tramp[13] = 0xb8; \
*(unsigned int *) &__tramp[14] = __size; /* mov __size, %eax */ \
*(unsigned int *) &__tramp[18] = 0x08244c8d; /* lea 8(%esp), %ecx */ \
*(unsigned int *) &__tramp[22] = 0x4802e8c1; /* shr $2, %eax ; dec %eax */ \
*(unsigned short*) &__tramp[26] = 0x0b74; /* jz 1f */ \
*(unsigned int *) &__tramp[28] = 0x8908518b; /* 2b: mov 8(%ecx), %edx */ \
*(unsigned int *) &__tramp[32] = 0x04c18311; /* mov %edx, (%ecx) ; add $4, %ecx */ \
*(unsigned char*) &__tramp[36] = 0x48; /* dec %eax */ \
*(unsigned short*) &__tramp[37] = 0xf575; /* jnz 2b ; 1f: */ \
*(unsigned char*) &__tramp[39] = 0xb8; \
*(unsigned int*) &__tramp[40] = __ctx; /* movl __ctx, %eax */ \
*(unsigned char *) &__tramp[44] = 0xe8; \
*(unsigned int*) &__tramp[45] = __dis; /* call __fun */ \
*(unsigned char*) &__tramp[49] = 0xc2; /* ret */ \
*(unsigned short*) &__tramp[50] = (__size + 8); /* ret (__size + 8) */ \
}
#define FFI_INIT_TRAMPOLINE_STDCALL(TRAMP,FUN,CTX,SIZE) \
{ unsigned char *__tramp = (unsigned char*)(TRAMP); \
unsigned int __fun = (unsigned int)(FUN); \
@@ -629,6 +658,13 @@ ffi_prep_closure_loc (ffi_closure* closure,
(void*)codeloc);
}
#ifdef X86_WIN32
else if (cif->abi == FFI_THISCALL)
{
FFI_INIT_TRAMPOLINE_THISCALL (&closure->tramp[0],
&ffi_closure_THISCALL,
(void*)codeloc,
cif->bytes);
}
else if (cif->abi == FFI_STDCALL)
{
FFI_INIT_TRAMPOLINE_STDCALL (&closure->tramp[0],