mewin/libpng
1
0
Fork 0
mirror of https://git.code.sf.net/p/libpng/code.git synced 2025-07-10 18:04:09 +02:00
Code Issues Projects Releases Wiki Activity

Imported from pngcrush-1.5.8.tar

Browse Source
This commit is contained in:
Glenn Randers-Pehrson
2001-12-12 18:01:38 -06:00
parent f671d863fe
commit 2eb0852fd6
22 changed files with 323 additions and 208 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
pnggccrd.c
View File

@@ -6,7 +6,7 @@
* and http://www.intel.com/drg/pentiumII/appnotes/923/923.htm
* for Intel's performance analysis of the MMX vs. non-MMX code.
*
* libpng version 1.2.0 - September 1, 2001
* libpng version 1.2.1 - December 12, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, Intel Corporation
@@ -5287,6 +5287,8 @@ png_mmx_support(void)
"popfl \n\t" // restore modified value to Eflag reg
"pushfl \n\t" // save Eflag to stack
"popl %%eax \n\t" // get Eflag from stack
"pushl %%ecx \n\t" // save original Eflag to stack
"popfl \n\t" // restore original Eflag
"xorl %%ecx, %%eax \n\t" // compare new Eflag with original Eflag
"jz .NOT_SUPPORTED \n\t" // if same, CPUID instr. is not supported