mirror of
https://github.com/mkxp-z/mkxp-z.git
synced 2024-10-28 11:19:36 +01:00
55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
#include "miniffi.h"
|
|
#include <assert.h>
|
|
|
|
#if defined(__MINGW64__) || defined(__linux__) || defined(__APPLE__)
|
|
mffi_value miniffi_call_intern(MINIFFI_FUNC target, MiniFFIFuncArgs *p, int nparams) {
|
|
assert(nparams <= 10);
|
|
return target(p->params[0], p->params[1], p->params[2], p->params[3],
|
|
p->params[4], p->params[5], p->params[6],
|
|
p->params[7], p->params[8], p->params[9]);
|
|
}
|
|
#else // 32-bit Windows
|
|
#define INTEL_ASM ".intel_syntax noprefix\n"
|
|
__attribute__((noinline))
|
|
mffi_value miniffi_call_intern(MINIFFI_FUNC target, MiniFFIFuncArgs *p, int nparams) {
|
|
mffi_value ret;
|
|
void *old_esp = 0;
|
|
|
|
asm volatile(INTEL_ASM
|
|
|
|
"mov [edi], esp\n"
|
|
"test ebx, ebx\n"
|
|
"jz mffi_call_void\n"
|
|
|
|
"shl ebx, 2\n"
|
|
"mov ecx, ebx\n"
|
|
|
|
"mffi_call_loop:\n"
|
|
"sub ecx, 4\n"
|
|
"mov ebx, [esi+ecx]\n"
|
|
"push ebx\n"
|
|
"test ecx, ecx\n"
|
|
"jnz mffi_call_loop\n"
|
|
|
|
"mffi_call_void:\n"
|
|
"call edx\n"
|
|
|
|
: "=a"(ret)
|
|
: "b"(nparams), "S"(p), "d"(target), "D"(&old_esp)
|
|
: "ecx"
|
|
);
|
|
|
|
|
|
// If esp doesn't match, this was probably a cdecl and not a stdcall.
|
|
// Move the stack pointer back to where it should be
|
|
asm volatile(INTEL_ASM
|
|
"mov edx, [edi]\n"
|
|
"cmp edx, esp\n"
|
|
"cmovne esp, edx"
|
|
:
|
|
: "D"(&old_esp)
|
|
: "edx"
|
|
);
|
|
return ret;
|
|
}
|
|
#endif
|