diff options
Diffstat (limited to 'media/libjpeg/simd/jsimdcpu.asm')
-rw-r--r-- | media/libjpeg/simd/jsimdcpu.asm | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/media/libjpeg/simd/jsimdcpu.asm b/media/libjpeg/simd/jsimdcpu.asm deleted file mode 100644 index 599083b182..0000000000 --- a/media/libjpeg/simd/jsimdcpu.asm +++ /dev/null @@ -1,104 +0,0 @@ -; -; jsimdcpu.asm - SIMD instruction support check -; -; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB -; -; Based on the x86 SIMD extension for IJG JPEG library -; Copyright (C) 1999-2006, MIYASAKA Masaru. -; For conditions of distribution and use, see copyright notice in jsimdext.inc -; -; This file should be assembled with NASM (Netwide Assembler), -; can *not* be assembled with Microsoft's MASM or any compatible -; assembler (including Borland's Turbo Assembler). -; NASM is available from http://nasm.sourceforge.net/ or -; http://sourceforge.net/project/showfiles.php?group_id=6208 -; -; [TAB8] - -%include "jsimdext.inc" - -; -------------------------------------------------------------------------- - SECTION SEG_TEXT - BITS 32 -; -; Check if the CPU supports SIMD instructions -; -; GLOBAL(unsigned int) -; jpeg_simd_cpu_support (void) -; - - align 16 - global EXTN(jpeg_simd_cpu_support) - -EXTN(jpeg_simd_cpu_support): - push ebx -; push ecx ; need not be preserved -; push edx ; need not be preserved -; push esi ; unused - push edi - - xor edi,edi ; simd support flag - - pushfd - pop eax - mov edx,eax - xor eax, 1<<21 ; flip ID bit in EFLAGS - push eax - popfd - pushfd - pop eax - xor eax,edx - jz short .return ; CPUID is not supported - - ; Check for MMX instruction support - xor eax,eax - cpuid - test eax,eax - jz short .return - - xor eax,eax - inc eax - cpuid - mov eax,edx ; eax = Standard feature flags - - test eax, 1<<23 ; bit23:MMX - jz short .no_mmx - or edi, byte JSIMD_MMX -.no_mmx: - test eax, 1<<25 ; bit25:SSE - jz short .no_sse - or edi, byte JSIMD_SSE -.no_sse: - test eax, 1<<26 ; bit26:SSE2 - jz short .no_sse2 - or edi, byte JSIMD_SSE2 -.no_sse2: - - ; Check for 3DNow! instruction support - mov eax, 0x80000000 - cpuid - cmp eax, 0x80000000 - jbe short .return - - mov eax, 0x80000001 - cpuid - mov eax,edx ; eax = Extended feature flags - - test eax, 1<<31 ; bit31:3DNow!(vendor independent) - jz short .no_3dnow - or edi, byte JSIMD_3DNOW -.no_3dnow: - -.return: - mov eax,edi - - pop edi -; pop esi ; unused -; pop edx ; need not be preserved -; pop ecx ; need not be preserved - pop ebx - ret - -; For some reason, the OS X linker does not honor the request to align the -; segment unless we do this. - align 16 |