Quelltext /~heha/hs/zqr.zip/src/vorbis/util.c

#ifdef _M_IX86
__int64 _declspec(naked) _cdecl _allshl(__int64 ll, char shift) {
 _asm{
	test	cl,32
	jnz	l1
	shld	edx,eax,cl
	shl	eax,cl
	ret
l1:	mov	edx,eax
	xor	eax,eax
	shl	edx,cl
	ret
 }
}
__int64 _declspec(naked) _cdecl _allshr(__int64 ll, char shift) {
 _asm{
	test	cl,32
	jnz	l1
	shrd	eax,edx,cl
	sar	edx,cl
	ret
l1:	mov	eax,edx
	xor	edx,edx
	sar	eax,cl
	ret
 }
}

void __declspec(naked) _fltused() {}
void __declspec(naked) _chkstk() { _asm{
	cmp	eax,4096
	jae	short probesetup
	neg	eax
	add	eax,esp
	add	eax,4
	test	dword ptr [eax],eax
	xchg	eax,esp
	jmp	dword ptr[eax]
probesetup:
	push	ecx
	 lea	ecx,[esp] + 8
onepg:	 sub	ecx,4096
	 sub	eax,4096
	 test	dword ptr [ecx],eax
	 cmp	eax,4096
	 jae	short onepg
	 sub	ecx,eax
	 mov	eax,esp
	 test	dword ptr [ecx],eax
	 mov	esp,ecx
	mov	ecx,dword ptr [eax]
	jmp	dword ptr[eax+4]
}}
void _declspec(naked) _alloca_probe() {_asm{
	jmp	_chkstk
}}
void _declspec(naked) _alloca_probe_16() {_asm{
	jmp	_chkstk
}}
#endif