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Bug 662358 - Implement mingw variant of nsXPTCStubBase::StubXX directly in assembly r=benjamin

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This commit is contained in:
Jacek Caban 2011-10-27 13:30:00 +02:00
parent 85d9e7bc7f
commit c50cbc6358
1 changed files with 55 additions and 14 deletions
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69
xpcom/reflect/xptcall/src/md/win32/xptcstubs.cpp
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@ -46,7 +46,10 @@
extern "C" {
static nsresult __stdcall
#ifndef __GNUC__
static
#endif
nsresult __stdcall
PrepareAndDispatch(nsXPTCStubBase* self, PRUint32 methodIndex,
PRUint32* args, PRUint32* stackBytesToPop)
{
@ -156,20 +159,58 @@ __declspec(naked) nsresult __stdcall nsXPTCStubBase::Stub##n() \
#else
asm(".text\n\t"
".align 4\n\t"
"SharedStub:\n\t"
"push %ebp\n\t"
"mov %esp, %ebp\n\t"
"push %ecx\n\t"
"lea -4(%ebp), %eax\n\t"
"push %eax\n\t"
"lea 12(%ebp), %eax\n\t"
"push %eax\n\t"
"push %ecx\n\t"
"movl 8(%ebp), %eax\n\t"
"push %eax\n\t"
"call _PrepareAndDispatch@16\n\t"
"mov 4(%ebp), %edx\n\t"
"mov -4(%ebp), %ecx\n\t"
"add $8, %ecx\n\t"
"mov %ebp, %esp\n\t"
"pop %ebp\n\t"
"add %ecx, %esp\n\t"
"jmp *%edx"
);
#define STUB_ENTRY(n) \
nsresult __stdcall nsXPTCStubBase::Stub##n() \
{ \
PRUint32 *args, stackBytesToPop = 0; \
nsresult result = 0; \
nsXPTCStubBase *obj; \
__asm__ __volatile__ ( \
"leal 0x0c(%%ebp), %%ecx\n\t" /* args */ \
"movl 0x08(%%ebp), %%edx\n\t" /* this */ \
: "=c" (args), \
"=d" (obj)); \
result = PrepareAndDispatch(obj, n, args, &stackBytesToPop); \
return result; \
}
asm(".text\n\t" \
".align 4\n\t" \
".if " #n " < 10\n\t" \
".globl __ZN14nsXPTCStubBase5Stub" #n "Ev@4\n\t" \
".def __ZN14nsXPTCStubBase5Stub" #n "Ev@4; \n\t" \
".scl 3\n\t" \
".type 46\n\t" \
".endef\n\t" \
"__ZN14nsXPTCStubBase5Stub" #n "Ev@4:\n\t" \
".elseif " #n " < 100\n\t" \
".globl __ZN14nsXPTCStubBase6Stub" #n "Ev@4\n\t" \
".def __ZN14nsXPTCStubBase6Stub" #n "Ev@4\n\t" \
".scl 3\n\t" \
".type 46\n\t" \
".endef\n\t" \
"__ZN14nsXPTCStubBase6Stub" #n "Ev@4:\n\t" \
".elseif " #n " < 1000\n\t" \
".globl __ZN14nsXPTCStubBase7Stub" #n "Ev@4\n\t" \
".def __ZN14nsXPTCStubBase7Stub" #n "Ev@4\n\t" \
".scl 3\n\t" \
".type 46\n\t" \
".endef\n\t" \
"__ZN14nsXPTCStubBase7Stub" #n "Ev@4:\n\t" \
".else\n\t" \
".err \"stub number " #n " >= 1000 not yet supported\"\n\t" \
".endif\n\t" \
"mov $" #n ", %ecx\n\t" \
"jmp SharedStub");
#endif /* __GNUC__ */