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- Fix MMX code when using gcc-4.6 [bnc#696824]

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* adjusted gcc46.patch

OBS-URL: https://build.opensuse.org/package/show/graphics/djvulibre?expand=0&rev=9
This commit is contained in:
Petr Gajdos 2011-06-09 10:43:29 +00:00 committed by Git OBS Bridge
parent 96c09584fd
commit f57f50d7a2
2 changed files with 63 additions and 0 deletions
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57
djvulibre-3.5.23-gcc46.patch
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@ -10,3 +10,60 @@
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
diff --git a/libdjvu/MMX.cpp b/libdjvu/MMX.cpp
index 528dab6..e70fdd8 100644
--- a/libdjvu/MMX.cpp
+++ b/libdjvu/MMX.cpp
@@ -167,8 +167,23 @@ MMXControl::enable_mmx()
: "=m" (cpuflags) :
: "eax","ecx","edx");
#endif
+#if defined(MMX) && defined(__GNUC__) && defined(__x86_64__)
+ // Detection of MMX for GCC
+ __asm__ volatile (// Check that CR0:EM is clear
+ "xorl %%edx,%%edx\n\t"
+ "smsw %%ax\n\t"
+ "andl $4,%%eax\n\t"
+ "jnz 1f\n\t"
+ // Execute CPUID
+ "movl $1,%%eax\n\t"
+ "cpuid\n"
+ // Finish
+ "1:\tmovl %%edx, %0"
+ : "=m" (cpuflags) :
+ : "eax","ebx","ecx","edx");
+#endif
#if defined(MMX) && defined(_MSC_VER) && defined(_M_IX86)
- // Detection of MMX for MSVC
+ // Detection of MMX for MSVC 32 bits
__asm { pushfd
pop ecx
xor edx,edx
diff --git a/libdjvu/MMX.h b/libdjvu/MMX.h
index b0af5e5..f8780af 100644
--- a/libdjvu/MMX.h
+++ b/libdjvu/MMX.h
@@ -143,17 +143,18 @@ class MMXControl
#ifndef NO_MMX
-#if defined(__GNUC__) && defined(__i386__)
+#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
+typedef struct{ char c[8]; } MMX_t;
#define MMXemms \
__asm__ volatile("emms" : : : "memory" )
#define MMXrr(op,src,dst) \
- __asm__ volatile( #op " %%" #src ",%%" #dst : : : "memory")
+ __asm__ volatile( #op " %%" #src ",%%" #dst : : : "memory" )
#define MMXir(op,imm,dst) \
- __asm__ volatile( #op " %0,%%" #dst : : "i" (imm) : "memory")
+ __asm__ volatile( #op " %0,%%" #dst : : "i" (imm) : "memory" )
#define MMXar(op,addr,dst) \
- __asm__ volatile( #op " %0,%%" #dst : : "m" (*(addr)) : "memory")
+ __asm__ volatile( #op " %0,%%" #dst : : "m" (*(MMX_t*)(addr)) : "memory" )
#define MMXra(op,src,addr) \
- __asm__ volatile( #op " %%" #src ",%0" : : "m" (*(addr)) : "memory")
+ __asm__ volatile( #op " %%" #src ",%0" : "=m" (*(MMX_t*)(addr)) : : "memory")
#define MMX 1
#endif

6
djvulibre.changes
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@ -1,3 +1,9 @@
-------------------------------------------------------------------
Thu Jun 9 10:22:43 UTC 2011 - pgajdos@novell.com
- Fix MMX code when using gcc-4.6 [bnc#696824]
* adjusted gcc46.patch
-------------------------------------------------------------------
Mon May 2 14:45:43 UTC 2011 - idoenmez@novell.com