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[master] Ported some cosmetic changes from the devel branch

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Glenn Randers-Pehrson
2009-10-05 13:53:19 -05:00
parent 48fac4e8ce
commit 9023e8f7bb
9 changed files with 172 additions and 125 deletions
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6
pnggccrd.c
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@@ -17,9 +17,9 @@ int PNGAPI
png_dummy_mmx_support(void)
{
int result;
#if defined(PNG_MMX_CODE_SUPPORTED) // superfluous, but what the heck
#ifdef PNG_MMX_CODE_SUPPORTED // superfluous, but what the heck
__asm__ __volatile__ (
#if defined(__x86_64__)
#ifdef __x86_64__
"pushq %%rbx \n\t" // rbx gets clobbered by CPUID instruction
"pushq %%rcx \n\t" // so does rcx...
"pushq %%rdx \n\t" // ...and rdx (but rcx & rdx safe on Linux)
@@ -71,7 +71,7 @@ png_dummy_mmx_support(void)
"0: \n\t" // .NOT_SUPPORTED: target label for jump instructions
"movl $0, %%eax \n\t" // set return value to 0
"1: \n\t" // .RETURN: target label for jump instructions
#if defined(__x86_64__)
#ifdef __x86_64__
"popq %%rdx \n\t" // restore rdx
"popq %%rcx \n\t" // restore rcx
"popq %%rbx \n\t" // restore rbx