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Real fix for mode switch segfault, not to mention collosal inline asm cleanups

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This commit is contained in:
theoddone33
2002-02-27 07:06:23 +00:00
parent adede569d1
commit b5f7ed85fd
2 changed files with 30 additions and 77 deletions
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105
zsnes/src/linux/sw_draw.c
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@@ -127,39 +127,37 @@ void sw_clearwin()
case 16:
__asm__ __volatile__ (
" xorl %%eax, %%eax\n" \
" movl SurfBufD, %%edi\n" \
" xorl %%ebx, %%ebx\n" \
"Blank2:\n" \
" movl SurfaceX, %%ecx\n" \
" movl %1, %%ecx\n" \
" rep\n" \
" stosw\n" \
" movl SurfaceX, %%edx\n" \
" addl pitch, %%edi\n" \
" movl %1, %%edx\n" \
" addl %0, %%edi\n" \
" shll $1, %%edx\n" \
" addl $1, %%ebx\n" \
" subl %%edx, %%edi\n" \
" cmpl SurfaceY, %%ebx\n" \
" cmpl %2, %%ebx\n" \
" jne Blank2\n" \
: : : "cc", "memory", "eax", "ebx", "edx", "ecx", "edi");
: : "g" (pitch), "g" (SurfaceX), "g" (SurfaceY), "D" (SurfBufD) : "cc", "memory", "eax", "ebx", "edx", "ecx");
break;
case 32:
__asm__ __volatile__ (
" xorl %%eax, %%eax\n" \
" movl SurfBufD, %%edi\n" \
" xorl %%ebx, %%ebx\n" \
"Blank3:\n" \
" movl SurfaceX, %%ecx\n" \
" movl %1, %%ecx\n" \
" rep\n" \
" stosl\n" \
" addl pitch, %%edi\n" \
" subl SurfaceX, %%edi\n" \
" subl SurfaceX, %%edi\n" \
" subl SurfaceX, %%edi\n" \
" subl SurfaceX, %%edi\n" \
" addl %0, %%edi\n" \
" subl %1, %%edi\n" \
" subl %1, %%edi\n" \
" subl %1, %%edi\n" \
" subl %1, %%edi\n" \
" addl $1, %%ebx\n" \
" cmpl SurfaceY, %%ebx\n" \
" cmpl %2, %%ebx\n" \
" jne Blank3\n" \
: : : "cc", "memory", "eax", "ebx", "ecx","edi");
: : "g" (pitch), "g" (SurfaceX), "g" (SurfaceY), "D" (SurfBufD) : "cc", "memory", "eax", "ebx", "ecx");
break;
}
UnlockSurface();
@@ -201,12 +199,7 @@ void sw_drawwin()
case 16:
if (MMXSupport){
__asm__ __volatile__ (
" pushw %%es\n" \
" movw %%ds, %%ax\n" \
" movw %%ax, %%es\n" \
" xorl %%eax, %%eax\n" \
" movl ScreenPtr, %%esi\n" \
" movl SurfBufD, %%edi\n" \
"Copying3:\n" \
" movl $32, %%ecx\n" \
"CopyLoop:\n" \
@@ -219,7 +212,7 @@ void sw_drawwin()
" decl %%ecx\n" \
" jnz CopyLoop\n" \
" incl %%eax\n" \
" addl pitch, %%edi\n" \
" addl %0, %%edi\n" \
" subl $512, %%edi\n" \
" addl $64, %%esi\n" \
" cmpl $223, %%eax\n" \
@@ -229,24 +222,18 @@ void sw_drawwin()
" movl $128, %%ecx\n" \
" rep\n" \
" stosl\n" \
" popw %%es\n" \
" emms\n" \
: : : "cc", "memory", "eax", "ebx", "ecx","edi", "esi");
: : "g" (pitch), "S" (ScreenPtr), "D" (SurfBufD) : "cc", "memory", "eax", "ebx", "ecx");
} else {
// Doesn't seem to work - DDOI
__asm__ __volatile__ (
" pushw %%es\n" \
" movw %%ds, %%ax\n" \
" movw %%ax, %%es\n" \
" xorl %%eax, %%eax\n" \
" movl ScreenPtr, %%esi\n" \
" movl SurfBufD, %%edi\n" \
"Copying:\n" \
" movl $128, %%ecx\n" \
" rep\n" \
" movsl\n" \
" incl %%eax\n" \
" addl pitch, %%edi\n" \
" addl %0, %%edi\n" \
" subl $512, %%edi\n" \
" addl $64, %%esi\n" \
" cmpl $223, %%eax\n" \
@@ -255,20 +242,13 @@ void sw_drawwin()
" movl $128, %%ecx\n" \
" rep\n" \
" stosl\n" \
" popw %%es\n" \
: : : "cc", "memory", "eax", "ebx", "ecx","edi", "esi");
: : "g" (pitch), "S" (ScreenPtr), "D" (SurfBufD) : "cc", "memory", "eax", "ecx");
}
break;
case 32:
__asm__ __volatile__ (
" pushw %%es\n" \
" movw %%ds, %%ax\n" \
" movw %%ax, %%es\n" \
" xorl %%eax, %%eax\n" \
" movl BitConv32Ptr, %%ebx\n" \
" movl ScreenPtr, %%esi\n" \
" movl SurfBufD, %%edi\n" \
"Copying32b:\n" \
" movl $256, %%ecx\n" \
" pushl %%eax\n" \
@@ -283,13 +263,12 @@ void sw_drawwin()
" jnz CopyLoop32b\n" \
" popl %%eax\n" \
" incl %%eax\n" \
" addl pitch, %%edi\n" \
" addl %0, %%edi\n" \
" subl $1024, %%edi\n" \
" addl $64, %%esi\n" \
" cmpl $223, %%eax\n" \
" jne Copying32b\n" \
" popw %%es\n" \
: : : "cc", "memory", "eax", "ebx", "ecx","edi", "esi");
: : "g" (pitch), "b" (BitConv32Ptr), "S" (ScreenPtr), "D" (SurfBufD) : "cc", "memory", "eax", "ecx","edx");
SURFDW = (DWORD *) SurfBufD + 222*pitch;
color32 = 0x7F000000;
@@ -334,19 +313,14 @@ void sw_drawwin()
case 16:
if (MMXSupport) {
__asm__ __volatile__ (
" pushw %%es\n" \
" movw %%ds, %%ax\n" \
" movw %%ax, %%es\n" \
" xor %%eax, %%eax\n" \
" xor %%ebx, %%ebx\n" \
" movl ScreenPtr, %%esi\n" \
" movl SurfBufD, %%edi\n" \
"Blank1MMX:\n" \
" mov $160, %%ecx\n" \
" rep\n" \
" stosl\n" \
" subl $160, %%edi\n" \
" addl pitch, %%edi\n" \
" addl %0, %%edi\n" \
" addl $1, %%ebx\n" \
" cmpl $8, %%ebx\n" \
" jne Blank1MMX\n" \
@@ -378,7 +352,7 @@ void sw_drawwin()
" decl %%ecx\n" \
" jnz MMXLoopC\n" \
" incl %%ebx\n" \
" addl pitch, %%edi\n" \
" addl %0, %%edi\n" \
" subl $640, %%edi\n" \
" addl $64, %%esi\n" \
" cmpl $223, %%ebx\n" \
@@ -387,25 +361,19 @@ void sw_drawwin()
" movl $128, %%ecx\n" \
" rep\n" \
" stosl\n" \
" pop %%es\n" \
" emms\n" \
: : : "cc", "memory", "eax", "ebx", "ecx","edi", "esi");
: : "g" (pitch), "S" (ScreenPtr), "D" (SurfBufD) : "cc", "memory", "eax", "ebx", "ecx");
} else {
__asm__ __volatile__ (
" push %%es\n" \
" movw %%ds, %%ax\n" \
" movw %%ax, %%es\n" \
" xorl %%eax, %%eax\n" \
" xorl %%ebx, %%ebx\n" \
" movl ScreenPtr, %%esi\n" \
" movl SurfBufD, %%edi\n" \
"Blank1:\n" \
" movl $160, %%ecx\n" \
" rep\n" \
" stosl\n" \
" subl $640, %%edi\n" \
" addl pitch, %%edi\n" \
" addl %0, %%edi\n" \
" addl $1, %%ebx\n" \
" cmpl $8, %%ebx\n" \
"jne Blank1\n" \
@@ -421,7 +389,7 @@ void sw_drawwin()
" rep\n" \
" stosl\n" \
" incl %%ebx\n" \
" addl pitch, %%edi\n" \
" addl %0, %%edi\n" \
" subl $640, %%edi\n" \
" addl $64, %%esi\n" \
" cmpl $223, %%ebx\n" \
@@ -430,8 +398,7 @@ void sw_drawwin()
" movl $128, %%ecx\n" \
" rep\n" \
" stosl\n" \
" pop %%es\n" \
: : : "cc", "memory", "eax", "ebx", "ecx","edi", "esi");
: : "g" (pitch), "S" (ScreenPtr), "D" (SurfBufD) : "cc", "memory", "eax", "ebx", "ecx");
}
break;
@@ -509,13 +476,7 @@ void sw_drawwin()
case 32:
__asm__ __volatile__ (
" pushw %%es\n" \
" movw %%ds, %%ax\n" \
" movw %%ax, %%es\n" \
" xorl %%eax, %%eax\n" \
" movl BitConv32Ptr, %%ebx\n" \
" movl ScreenPtr, %%esi\n" \
" movl SurfBufD, %%edi\n" \
"Copying32c:\n" \
" movl $256, %%ecx\n" \
" pushl %%eax\n" \
@@ -530,7 +491,7 @@ void sw_drawwin()
" loop CopyLoop32c\n" \
" pushl %%esi\n" \
" movl %%edi, %%esi\n" \
" subl pitch, %%esi\n" \
" subl %0, %%esi\n" \
" movl $512, %%ecx\n" \
" rep\n" \
" movsl\n" \
@@ -540,8 +501,7 @@ void sw_drawwin()
" addl $64, %%esi\n" \
" cmpl $223, %%eax\n" \
" jne Copying32c\n" \
" popw %%es\n" \
: : : "cc", "memory","eax","ebx","ecx","edx","edi","esi");
: : "g" (pitch), "S" (ScreenPtr), "D" (SurfBufD), "b" (BitConv32Ptr) : "cc", "memory","eax","ecx","edx");
break;
/*
addl pitch, %%edi
@@ -571,13 +531,7 @@ void sw_drawwin()
case 32:
__asm__ __volatile__ (
" pushw %%es\n" \
" movw %%ds, %%ax\n" \
" movw %%ax, %%es\n" \
" xorl %%eax, %%eax\n" \
" movl BitConv32Ptr, %%ebx\n" \
" movl ScreenPtr, %%esi\n" \
" movl SurfBufD, %%edi\n" \
" addl $20608, %%edi\n" \
"Copying32d:\n" \
" movl $256, %%ecx\n" \
@@ -594,7 +548,7 @@ void sw_drawwin()
" addl $512, %%edi\n" \
" pushl %%esi\n" \
" movl %%edi, %%esi\n" \
" subl pitch, %%esi\n" \
" subl %0, %%esi\n" \
" movl $512, %%ecx\n" \
" rep\n" \
" movsl\n" \
@@ -605,8 +559,7 @@ void sw_drawwin()
" addl $64, %%esi\n" \
" cmpl $223, %%eax\n" \
" jne Copying32d\n" \
" popw %%es\n" \
: : : "cc", "memory","eax","ebx","ecx","edx","edi","esi");
: : "g" (pitch), "S" (ScreenPtr), "D" (SurfBufD), "b" (BitConv32Ptr) : "cc", "memory","eax","ecx","edx");
break;
/*
addl pitch, %%edi