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We were changing the edi register, but not informing the compiler about this.

Browse source 
For certain optimization combinations, the compiler would assume edi was
unchanged. Fixed by adding %edi to the clobber list.

svn path=/trunk/; revision=15901
This commit is contained in:
Gé van Geldorp 2005-06-13 22:24:28 +00:00
parent f5f855488d
commit 08d5e5e7e5
2 changed files with 11 additions and 8 deletions
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14
reactos/subsys/win32k/dib/dib16bpp.c
View file

@ -17,6 +17,7 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id$ */
#include <w32k.h>
VOID
@ -53,6 +54,7 @@ DIB_16BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
" shl $16, %%eax\n"
" andl $0xffff, %0\n" /* If the pixel value is "abcd", put "abcdabcd" in %eax */
" or %0, %%eax\n"
" mov %2, %%edi\n"
" test $0x03, %%edi\n" /* Align to fullword boundary */
" jz .L1\n"
" stosw\n"
@ -67,8 +69,8 @@ DIB_16BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
" stosw\n"
".L2:\n"
: /* no output */
: "r"(c), "r"(Count), "D"(addr)
: "%eax", "%ecx");
: "r"(c), "r"(Count), "m"(addr)
: "%eax", "%ecx", "%edi");
#else /* _M_IX86 */
LONG cx = x1;
DWORD cc;
@ -443,8 +445,8 @@ DIB_16BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
{
__asm__ __volatile__ (
" cld\n"
" mov %0,%%eax\n"
" mov %1,%%ebx\n"
" mov %2,%%edi\n"
" test $0x03, %%edi\n" /* Align to fullword boundary */
" jz .FL1\n"
" stosw\n"
@ -458,9 +460,9 @@ DIB_16BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
" jz .FL2\n"
" stosw\n"
".FL2:\n"
:
: "r" (color), "r" (width), "D" (pos)
: "%eax", "%ecx","%ebx");
:
: "a" (color), "r" (width), "m" (pos)
: "%ecx", "%ebx", "%edi");
pos =(PULONG)((ULONG_PTR)pos + delta);
}

5
reactos/subsys/win32k/dib/dib32bpp.c
View file

@ -52,6 +52,7 @@ DIB_32BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
__asm__ __volatile__ (
" cld\n"
" mov %0, %%eax\n"
" mov %2, %%edi\n"
" test $0x03, %%edi\n" /* Align to fullword boundary */
" jnz .L1\n"
" mov %1,%%ecx\n" /* Setup count of fullwords to fill */
@ -67,8 +68,8 @@ DIB_32BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
" stosw\n"
".L2:\n"
: /* no output */
: "r"(c), "r"(cx), "D"(addr)
: "%eax", "%ecx");
: "m"(c), "r"(cx), "m"(addr)
: "%eax", "%ecx", "%edi");
}