mirror of
https://github.com/ZDoom/Raze.git
synced 2024-12-15 15:11:41 +00:00
604 lines
12 KiB
C
604 lines
12 KiB
C
//
|
|
// Microsoft C inline assembler
|
|
//
|
|
|
|
//{{{
|
|
|
|
#ifdef __pragmas_h__
|
|
#ifndef __pragmas_x86_h__
|
|
#define __pragmas_x86_h__
|
|
|
|
static __inline int32_t sqr(int32_t a)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
imul eax, eax
|
|
}
|
|
}
|
|
|
|
static __inline int32_t scale(int32_t a, int32_t d, int32_t c)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
imul d
|
|
idiv c
|
|
}
|
|
}
|
|
|
|
static __inline int32_t mulscale(int32_t a, int32_t d, int32_t c)
|
|
{
|
|
_asm {
|
|
mov ecx, c
|
|
mov eax, a
|
|
imul d
|
|
shrd eax, edx, cl
|
|
}
|
|
}
|
|
|
|
#define _scaler(x) \
|
|
static __inline int32_t mulscale##x (int32_t a, int32_t d) \
|
|
{ \
|
|
_asm mov eax, a \
|
|
_asm imul d \
|
|
_asm shrd eax, edx, x \
|
|
} \
|
|
static __inline int32_t dmulscale##x (int32_t a, int32_t d, int32_t S, int32_t D) \
|
|
{ \
|
|
_asm mov eax, a \
|
|
_asm imul d \
|
|
_asm mov ebx, eax \
|
|
_asm mov eax, S \
|
|
_asm mov esi, edx \
|
|
_asm imul D \
|
|
_asm add eax, ebx \
|
|
_asm adc edx, esi \
|
|
_asm shrd eax, edx, x \
|
|
} \
|
|
|
|
|
|
PRAGMA_FUNCS
|
|
#undef _scaler
|
|
|
|
static __inline int32_t mulscale32(int32_t a, int32_t d)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
imul d
|
|
mov eax, edx
|
|
}
|
|
}
|
|
|
|
static __inline int32_t dmulscale(int32_t a, int32_t d, int32_t S, int32_t D, int32_t c)
|
|
{
|
|
_asm {
|
|
mov ecx, c
|
|
mov eax, a
|
|
imul d
|
|
mov ebx, eax
|
|
mov eax, S
|
|
mov esi, edx
|
|
imul D
|
|
add eax, ebx
|
|
adc edx, esi
|
|
shrd eax, edx, cl
|
|
}
|
|
}
|
|
|
|
static __inline int32_t dmulscale32(int32_t a, int32_t d, int32_t S, int32_t D)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
imul d
|
|
mov ebx, eax
|
|
mov eax, S
|
|
mov esi, edx
|
|
imul D
|
|
add eax, ebx
|
|
adc edx, esi
|
|
mov eax, edx
|
|
}
|
|
}
|
|
|
|
#ifdef USE_ASM_DIVSCALE
|
|
static __inline int32_t divscale(int32_t a, int32_t b, int32_t c)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
mov ecx, c
|
|
mov edx, eax
|
|
shl eax, cl
|
|
neg cl
|
|
sar edx, cl
|
|
idiv b
|
|
}
|
|
}
|
|
|
|
static __inline int32_t divscale1(int32_t a, int32_t b)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
add eax, eax
|
|
sbb edx, edx
|
|
idiv b
|
|
}
|
|
}
|
|
|
|
static __inline int32_t divscale2(int32_t a, int32_t b)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
mov edx, eax
|
|
sar edx, 30
|
|
lea eax, [eax*4]
|
|
idiv b
|
|
}
|
|
}
|
|
|
|
static __inline int32_t divscale3(int32_t a, int32_t b)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
mov edx, eax
|
|
sar edx, 29
|
|
lea eax, [eax*8]
|
|
idiv b
|
|
}
|
|
}
|
|
|
|
#define DIVSCALE(x,y) \
|
|
static __inline int32_t divscale##y(int32_t a, int32_t b) \
|
|
{ \
|
|
_asm mov eax, a \
|
|
_asm mov edx, eax \
|
|
_asm sar edx, x \
|
|
_asm shl eax, y \
|
|
_asm idiv b \
|
|
}
|
|
|
|
DIVSCALE(28, 4) DIVSCALE(27, 5) DIVSCALE(26, 6) DIVSCALE(25, 7)
|
|
DIVSCALE(24, 8) DIVSCALE(23, 9) DIVSCALE(22, 10) DIVSCALE(21, 11)
|
|
DIVSCALE(20, 12) DIVSCALE(19, 13) DIVSCALE(18, 14) DIVSCALE(17, 15)
|
|
DIVSCALE(16, 16) DIVSCALE(15, 17) DIVSCALE(14, 18) DIVSCALE(13, 19)
|
|
DIVSCALE(12, 20) DIVSCALE(11, 21) DIVSCALE(10, 22) DIVSCALE(9, 23)
|
|
DIVSCALE(8, 24) DIVSCALE(7, 25) DIVSCALE(6, 26) DIVSCALE(5, 27)
|
|
DIVSCALE(4, 28) DIVSCALE(3, 29) DIVSCALE(2, 30) DIVSCALE(1, 31)
|
|
|
|
static __inline int32_t divscale32(int32_t d, int32_t b)
|
|
{
|
|
_asm {
|
|
mov edx, d
|
|
xor eax, eax
|
|
idiv b
|
|
}
|
|
}
|
|
#endif // defined USE_ASM_DIVSCALE
|
|
|
|
static __inline char readpixel(void *d)
|
|
{
|
|
_asm {
|
|
mov edx, d
|
|
mov al, byte ptr[edx]
|
|
}
|
|
}
|
|
|
|
static __inline void drawpixel(void *d, char a)
|
|
{
|
|
_asm {
|
|
mov edx, d
|
|
mov al, a
|
|
mov byte ptr[edx], al
|
|
}
|
|
}
|
|
|
|
static __inline void drawpixels(void *d, int16_t a)
|
|
{
|
|
_asm {
|
|
mov edx, d
|
|
mov ax, a
|
|
mov word ptr[edx], ax
|
|
}
|
|
}
|
|
|
|
static __inline void drawpixelses(void *d, int32_t a)
|
|
{
|
|
_asm {
|
|
mov edx, d
|
|
mov eax, a
|
|
mov dword ptr[edx], eax
|
|
}
|
|
}
|
|
|
|
static __inline void clearbuf(void *d, int32_t c, int32_t a)
|
|
{
|
|
_asm {
|
|
mov edi, d
|
|
mov ecx, c
|
|
mov eax, a
|
|
rep stosd
|
|
}
|
|
}
|
|
|
|
static __inline void clearbufbyte(void *d, int32_t c, int32_t a)
|
|
{
|
|
_asm {
|
|
mov edi, d
|
|
mov ecx, c
|
|
mov eax, a
|
|
cmp ecx, 4
|
|
jae longcopy
|
|
test cl, 1
|
|
jz preskip
|
|
stosb
|
|
preskip :
|
|
shr ecx, 1
|
|
rep stosw
|
|
jmp endit
|
|
longcopy :
|
|
test edi, 1
|
|
jz skip1
|
|
stosb
|
|
dec ecx
|
|
skip1 :
|
|
test edi, 2
|
|
jz skip2
|
|
stosw
|
|
sub ecx, 2
|
|
skip2 :
|
|
mov ebx, ecx
|
|
shr ecx, 2
|
|
rep stosd
|
|
test bl, 2
|
|
jz skip3
|
|
stosw
|
|
skip3 :
|
|
test bl, 1
|
|
jz endit
|
|
stosb
|
|
endit :
|
|
}
|
|
}
|
|
|
|
static __inline void copybuf(const void *s, void *d, int32_t c)
|
|
{
|
|
_asm {
|
|
mov esi, s
|
|
mov edi, d
|
|
mov ecx, c
|
|
rep movsd
|
|
}
|
|
}
|
|
|
|
static __inline void copybufbyte(const void *s, void *d, int32_t c)
|
|
{
|
|
_asm {
|
|
mov esi, s
|
|
mov edi, d
|
|
mov ecx, c
|
|
cmp ecx, 4
|
|
jae longcopy
|
|
test cl, 1
|
|
jz preskip
|
|
movsb
|
|
preskip :
|
|
shr ecx, 1
|
|
rep movsw
|
|
jmp endit
|
|
longcopy :
|
|
test edi, 1
|
|
jz skip1
|
|
movsb
|
|
dec ecx
|
|
skip1 :
|
|
test edi, 2
|
|
jz skip2
|
|
movsw
|
|
sub ecx, 2
|
|
skip2 :
|
|
mov ebx, ecx
|
|
shr ecx, 2
|
|
rep movsd
|
|
test bl, 2
|
|
jz skip3
|
|
movsw
|
|
skip3 :
|
|
test bl, 1
|
|
jz endit
|
|
movsb
|
|
endit :
|
|
}
|
|
}
|
|
|
|
static __inline void copybufreverse(const void *s, void *d, int32_t c)
|
|
{
|
|
_asm {
|
|
mov esi, s
|
|
mov edi, d
|
|
mov ecx, c
|
|
shr ecx, 1
|
|
jnc skipit1
|
|
mov al, byte ptr[esi]
|
|
dec esi
|
|
mov byte ptr[edi], al
|
|
inc edi
|
|
skipit1 :
|
|
shr ecx, 1
|
|
jnc skipit2
|
|
mov ax, word ptr[esi-1]
|
|
sub esi, 2
|
|
ror ax, 8
|
|
mov word ptr[edi], ax
|
|
add edi, 2
|
|
skipit2:
|
|
test ecx, ecx
|
|
jz endloop
|
|
begloop :
|
|
mov eax, dword ptr[esi-3]
|
|
sub esi, 4
|
|
bswap eax
|
|
mov dword ptr[edi], eax
|
|
add edi, 4
|
|
dec ecx
|
|
jnz begloop
|
|
endloop :
|
|
}
|
|
}
|
|
|
|
static __inline void qinterpolatedown16(int32_t a, int32_t c, int32_t d, int32_t s)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
mov ecx, c
|
|
mov edx, d
|
|
mov esi, s
|
|
mov ebx, ecx
|
|
shr ecx, 1
|
|
jz skipbegcalc
|
|
begqcalc :
|
|
lea edi, [edx+esi]
|
|
sar edx, 16
|
|
mov dword ptr[eax], edx
|
|
lea edx, [edi+esi]
|
|
sar edi, 16
|
|
mov dword ptr[eax+4], edi
|
|
add eax, 8
|
|
dec ecx
|
|
jnz begqcalc
|
|
test ebx, 1
|
|
jz skipbegqcalc2
|
|
skipbegcalc :
|
|
sar edx, 16
|
|
mov dword ptr[eax], edx
|
|
skipbegqcalc2 :
|
|
}
|
|
}
|
|
|
|
static __inline void qinterpolatedown16short(int32_t a, int32_t c, int32_t d, int32_t s)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
mov ecx, c
|
|
mov edx, d
|
|
mov esi, s
|
|
test ecx, ecx
|
|
jz endit
|
|
test al, 2
|
|
jz skipalignit
|
|
mov ebx, edx
|
|
sar ebx, 16
|
|
mov word ptr[eax], bx
|
|
add edx, esi
|
|
add eax, 2
|
|
dec ecx
|
|
jz endit
|
|
skipalignit :
|
|
sub ecx, 2
|
|
jc finishit
|
|
begqcalc :
|
|
mov ebx, edx
|
|
add edx, esi
|
|
sar ebx, 16
|
|
mov edi, edx
|
|
and edi, 0ffff0000h
|
|
add edx, esi
|
|
add ebx, edi
|
|
mov dword ptr[eax], ebx
|
|
add eax, 4
|
|
sub ecx, 2
|
|
jnc begqcalc
|
|
test cl, 1
|
|
jz endit
|
|
finishit :
|
|
mov ebx, edx
|
|
sar ebx, 16
|
|
mov word ptr[eax], bx
|
|
endit :
|
|
}
|
|
}
|
|
|
|
//returns eax/ebx, dmval = eax%edx;
|
|
static __inline int32_t divmod(int32_t a, int32_t b)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
xor edx, edx
|
|
div b
|
|
mov dmval, edx
|
|
}
|
|
}
|
|
|
|
//returns eax%ebx, dmval = eax/edx;
|
|
static __inline int32_t moddiv(int32_t a, int32_t b)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
xor edx, edx
|
|
div b
|
|
mov dmval, eax
|
|
mov eax, edx
|
|
}
|
|
}
|
|
|
|
static __inline int32_t klabs(int32_t a)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
test eax, eax
|
|
jns skipnegate
|
|
neg eax
|
|
skipnegate :
|
|
}
|
|
}
|
|
|
|
static __inline int32_t ksgn(int32_t b)
|
|
{
|
|
_asm {
|
|
mov ebx, b
|
|
add ebx, ebx
|
|
sbb eax, eax
|
|
cmp eax, ebx
|
|
adc al, 0
|
|
}
|
|
}
|
|
|
|
//eax = (unsigned min)umin(eax,ebx)
|
|
static __inline int32_t umin(int32_t a, int32_t b)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
sub eax, b
|
|
sbb ecx, ecx
|
|
and eax, ecx
|
|
add eax, b
|
|
}
|
|
}
|
|
|
|
//eax = (unsigned max)umax(eax,ebx)
|
|
static __inline int32_t umax(int32_t a, int32_t b)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
sub eax, b
|
|
sbb ecx, ecx
|
|
xor ecx, 0xffffffff
|
|
and eax, ecx
|
|
add eax, b
|
|
}
|
|
}
|
|
|
|
static __inline int32_t kmin(int32_t a, int32_t b)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
mov ebx, b
|
|
cmp eax, ebx
|
|
jl skipit
|
|
mov eax, ebx
|
|
skipit :
|
|
}
|
|
}
|
|
|
|
static __inline int32_t kmax(int32_t a, int32_t b)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
mov ebx, b
|
|
cmp eax, ebx
|
|
jg skipit
|
|
mov eax, ebx
|
|
skipit :
|
|
}
|
|
}
|
|
|
|
static __inline void swapchar(void *a, void *b)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
mov ebx, b
|
|
mov cl, [eax]
|
|
mov ch, [ebx]
|
|
mov[ebx], cl
|
|
mov[eax], ch
|
|
}
|
|
}
|
|
|
|
static __inline void swapshort(void *a, void *b)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
mov ebx, b
|
|
mov cx, [eax]
|
|
mov dx, [ebx]
|
|
mov[ebx], cx
|
|
mov[eax], dx
|
|
}
|
|
}
|
|
|
|
static __inline void swaplong(void *a, void *b)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
mov ebx, b
|
|
mov ecx, [eax]
|
|
mov edx, [ebx]
|
|
mov[ebx], ecx
|
|
mov[eax], edx
|
|
}
|
|
}
|
|
|
|
#define swapfloat swaplong
|
|
|
|
static __inline void swapbuf4(void *a, void *b, int32_t c)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
mov ebx, b
|
|
mov ecx, c
|
|
begswap :
|
|
mov esi, [eax]
|
|
mov edi, [ebx]
|
|
mov[ebx], esi
|
|
mov[eax], edi
|
|
add eax, 4
|
|
add ebx, 4
|
|
dec ecx
|
|
jnz short begswap
|
|
}
|
|
}
|
|
|
|
static __inline void swap64bit(void *a, void *b)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
mov ebx, b
|
|
mov ecx, [eax]
|
|
mov edx, [ebx]
|
|
mov[ebx], ecx
|
|
mov ecx, [eax+4]
|
|
mov[eax], edx
|
|
mov edx, [ebx+4]
|
|
mov[ebx+4], ecx
|
|
mov[eax+4], edx
|
|
}
|
|
}
|
|
|
|
//swapchar2(ptr1,ptr2,xsiz); is the same as:
|
|
//swapchar(ptr1,ptr2); swapchar(ptr1+1,ptr2+xsiz);
|
|
static __inline void swapchar2(void *a, void *b, int32_t s)
|
|
{
|
|
_asm {
|
|
mov eax, a
|
|
mov ebx, b
|
|
mov esi, s
|
|
add esi, ebx
|
|
mov cx, [eax]
|
|
mov dl, [ebx]
|
|
mov[ebx], cl
|
|
mov dh, [esi]
|
|
mov[esi], ch
|
|
mov[eax], dx
|
|
}
|
|
}
|
|
//}}}
|
|
|
|
#endif // __pragmas_x86_h__
|
|
#endif // __pragmas_h__
|