gecko/media/libvpx/vpx_ports/arm_cpudetect.c
Timothy B. Terriberry 276a65b63d Bug 730907 - Update libvpx to v1.0.0, r=cpearce,khuey
--HG--
rename : media/libvpx/vp8/decoder/arm/armv6/dequant_idct_v6.asm => media/libvpx/vp8/common/arm/armv6/dequant_idct_v6.asm
rename : media/libvpx/vp8/decoder/arm/armv6/dequantize_v6.asm => media/libvpx/vp8/common/arm/armv6/dequantize_v6.asm
rename : media/libvpx/vp8/decoder/arm/armv6/idct_blk_v6.c => media/libvpx/vp8/common/arm/armv6/idct_blk_v6.c
rename : media/libvpx/vp8/encoder/arm/armv6/vp8_mse16x16_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_mse16x16_armv6.asm
rename : media/libvpx/vp8/encoder/arm/armv6/vp8_sad16x16_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_sad16x16_armv6.asm
rename : media/libvpx/vp8/encoder/arm/armv6/vp8_variance16x16_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_variance16x16_armv6.asm
rename : media/libvpx/vp8/encoder/arm/armv6/vp8_variance8x8_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_variance8x8_armv6.asm
rename : media/libvpx/vp8/encoder/arm/armv6/vp8_variance_halfpixvar16x16_h_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_variance_halfpixvar16x16_h_armv6.asm
rename : media/libvpx/vp8/encoder/arm/armv6/vp8_variance_halfpixvar16x16_hv_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_variance_halfpixvar16x16_hv_armv6.asm
rename : media/libvpx/vp8/encoder/arm/armv6/vp8_variance_halfpixvar16x16_v_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_variance_halfpixvar16x16_v_armv6.asm
rename : media/libvpx/vp8/decoder/arm/dequantize_arm.c => media/libvpx/vp8/common/arm/dequantize_arm.c
rename : media/libvpx/vp8/decoder/arm/dequantize_arm.h => media/libvpx/vp8/common/arm/dequantize_arm.h
rename : media/libvpx/vp8/decoder/arm/neon/dequant_idct_neon.asm => media/libvpx/vp8/common/arm/neon/dequant_idct_neon.asm
rename : media/libvpx/vp8/decoder/arm/neon/dequantizeb_neon.asm => media/libvpx/vp8/common/arm/neon/dequantizeb_neon.asm
rename : media/libvpx/vp8/decoder/arm/neon/idct_blk_neon.c => media/libvpx/vp8/common/arm/neon/idct_blk_neon.c
rename : media/libvpx/vp8/decoder/arm/neon/idct_dequant_0_2x_neon.asm => media/libvpx/vp8/common/arm/neon/idct_dequant_0_2x_neon.asm
rename : media/libvpx/vp8/decoder/arm/neon/idct_dequant_full_2x_neon.asm => media/libvpx/vp8/common/arm/neon/idct_dequant_full_2x_neon.asm
rename : media/libvpx/vp8/encoder/arm/neon/sad16_neon.asm => media/libvpx/vp8/common/arm/neon/sad16_neon.asm
rename : media/libvpx/vp8/encoder/arm/neon/sad8_neon.asm => media/libvpx/vp8/common/arm/neon/sad8_neon.asm
rename : media/libvpx/vp8/encoder/arm/neon/variance_neon.asm => media/libvpx/vp8/common/arm/neon/variance_neon.asm
rename : media/libvpx/vp8/encoder/arm/neon/vp8_mse16x16_neon.asm => media/libvpx/vp8/common/arm/neon/vp8_mse16x16_neon.asm
rename : media/libvpx/vp8/encoder/arm/neon/vp8_subpixelvariance16x16_neon.asm => media/libvpx/vp8/common/arm/neon/vp8_subpixelvariance16x16_neon.asm
rename : media/libvpx/vp8/encoder/arm/neon/vp8_subpixelvariance16x16s_neon.asm => media/libvpx/vp8/common/arm/neon/vp8_subpixelvariance16x16s_neon.asm
rename : media/libvpx/vp8/encoder/arm/neon/vp8_subpixelvariance8x8_neon.asm => media/libvpx/vp8/common/arm/neon/vp8_subpixelvariance8x8_neon.asm
rename : media/libvpx/vp8/encoder/arm/variance_arm.c => media/libvpx/vp8/common/arm/variance_arm.c
rename : media/libvpx/vp8/encoder/arm/variance_arm.h => media/libvpx/vp8/common/arm/variance_arm.h
rename : media/libvpx/vp8/decoder/dequantize.c => media/libvpx/vp8/common/dequantize.c
rename : media/libvpx/vp8/decoder/dequantize.h => media/libvpx/vp8/common/dequantize.h
rename : media/libvpx/vp8/decoder/idct_blk.c => media/libvpx/vp8/common/idct_blk.c
rename : media/libvpx/vp8/encoder/sad_c.c => media/libvpx/vp8/common/sad_c.c
rename : media/libvpx/vp8/encoder/variance.h => media/libvpx/vp8/common/variance.h
rename : media/libvpx/vp8/encoder/variance_c.c => media/libvpx/vp8/common/variance_c.c
rename : media/libvpx/vp8/decoder/x86/dequantize_mmx.asm => media/libvpx/vp8/common/x86/dequantize_mmx.asm
rename : media/libvpx/vp8/decoder/x86/dequantize_x86.h => media/libvpx/vp8/common/x86/dequantize_x86.h
rename : media/libvpx/vp8/decoder/x86/idct_blk_mmx.c => media/libvpx/vp8/common/x86/idct_blk_mmx.c
rename : media/libvpx/vp8/decoder/x86/idct_blk_sse2.c => media/libvpx/vp8/common/x86/idct_blk_sse2.c
rename : media/libvpx/vp8/encoder/x86/sad_mmx.asm => media/libvpx/vp8/common/x86/sad_mmx.asm
rename : media/libvpx/vp8/encoder/x86/sad_sse2.asm => media/libvpx/vp8/common/x86/sad_sse2.asm
rename : media/libvpx/vp8/encoder/x86/sad_sse3.asm => media/libvpx/vp8/common/x86/sad_sse3.asm
rename : media/libvpx/vp8/encoder/x86/sad_sse4.asm => media/libvpx/vp8/common/x86/sad_sse4.asm
rename : media/libvpx/vp8/encoder/x86/sad_ssse3.asm => media/libvpx/vp8/common/x86/sad_ssse3.asm
rename : media/libvpx/vp8/encoder/x86/variance_impl_mmx.asm => media/libvpx/vp8/common/x86/variance_impl_mmx.asm
rename : media/libvpx/vp8/encoder/x86/variance_impl_sse2.asm => media/libvpx/vp8/common/x86/variance_impl_sse2.asm
rename : media/libvpx/vp8/encoder/x86/variance_impl_ssse3.asm => media/libvpx/vp8/common/x86/variance_impl_ssse3.asm
rename : media/libvpx/vp8/encoder/x86/variance_mmx.c => media/libvpx/vp8/common/x86/variance_mmx.c
rename : media/libvpx/vp8/encoder/x86/variance_sse2.c => media/libvpx/vp8/common/x86/variance_sse2.c
rename : media/libvpx/vp8/encoder/x86/variance_ssse3.c => media/libvpx/vp8/common/x86/variance_ssse3.c
rename : media/libvpx/vp8/encoder/x86/variance_x86.h => media/libvpx/vp8/common/x86/variance_x86.h
rename : media/libvpx/vp8/encoder/arm/armv6/vp8_fast_fdct4x4_armv6.asm => media/libvpx/vp8/encoder/arm/armv6/vp8_short_fdct4x4_armv6.asm
rename : media/libvpx/vp8/common/defaultcoefcounts.c => media/libvpx/vp8/encoder/defaultcoefcounts.h
2012-04-29 20:51:44 -07:00

219 lines
4.9 KiB
C

/*
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <stdlib.h>
#include <string.h>
#include "arm.h"
static int arm_cpu_env_flags(int *flags)
{
char *env;
env = getenv("VPX_SIMD_CAPS");
if (env && *env)
{
*flags = (int)strtol(env, NULL, 0);
return 0;
}
*flags = 0;
return -1;
}
static int arm_cpu_env_mask(void)
{
char *env;
env = getenv("VPX_SIMD_CAPS_MASK");
return env && *env ? (int)strtol(env, NULL, 0) : ~0;
}
#if defined(_MSC_VER)
/*For GetExceptionCode() and EXCEPTION_ILLEGAL_INSTRUCTION.*/
#define WIN32_LEAN_AND_MEAN
#define WIN32_EXTRA_LEAN
#include <windows.h>
int arm_cpu_caps(void)
{
int flags;
int mask;
if (!arm_cpu_env_flags(&flags))
{
return flags;
}
mask = arm_cpu_env_mask();
/* MSVC has no inline __asm support for ARM, but it does let you __emit
* instructions via their assembled hex code.
* All of these instructions should be essentially nops.
*/
#if defined(HAVE_ARMV5TE)
if (mask & HAS_EDSP)
{
__try
{
/*PLD [r13]*/
__emit(0xF5DDF000);
flags |= HAS_EDSP;
}
__except(GetExceptionCode() == EXCEPTION_ILLEGAL_INSTRUCTION)
{
/*Ignore exception.*/
}
}
#if defined(HAVE_ARMV6)
if (mask & HAS_MEDIA)
__try
{
/*SHADD8 r3,r3,r3*/
__emit(0xE6333F93);
flags |= HAS_MEDIA;
}
__except(GetExceptionCode() == EXCEPTION_ILLEGAL_INSTRUCTION)
{
/*Ignore exception.*/
}
}
#if defined(HAVE_ARMV7)
if (mask & HAS_NEON)
{
__try
{
/*VORR q0,q0,q0*/
__emit(0xF2200150);
flags |= HAS_NEON;
}
__except(GetExceptionCode() == EXCEPTION_ILLEGAL_INSTRUCTION)
{
/*Ignore exception.*/
}
}
#endif
#endif
#endif
return flags & mask;
}
#elif defined(__linux__)
#if defined(__ANDROID__)
#include <cpu-features.h>
int arm_cpu_caps(void)
{
int flags;
int mask;
uint64_t features;
if (!arm_cpu_env_flags(&flags))
{
return flags;
}
mask = arm_cpu_env_mask();
features = android_getCpuFeatures();
#if defined(HAVE_ARMV5TE)
flags |= HAS_EDSP;
#endif
#if defined(HAVE_ARMV6)
flags |= HAS_MEDIA;
#endif
#if defined(HAVE_ARMV7)
if (features & ANDROID_CPU_ARM_FEATURE_NEON)
flags |= HAS_NEON;
#endif
return flags & mask;
}
#else // !defined(__ANDROID__)
#include <stdio.h>
int arm_cpu_caps(void)
{
FILE *fin;
int flags;
int mask;
if (!arm_cpu_env_flags(&flags))
{
return flags;
}
mask = arm_cpu_env_mask();
/* Reading /proc/self/auxv would be easier, but that doesn't work reliably
* on Android.
* This also means that detection will fail in Scratchbox.
*/
fin = fopen("/proc/cpuinfo","r");
if(fin != NULL)
{
/* 512 should be enough for anybody (it's even enough for all the flags
* that x86 has accumulated... so far).
*/
char buf[512];
while (fgets(buf, 511, fin) != NULL)
{
#if defined(HAVE_ARMV5TE) || defined(HAVE_ARMV7)
if (memcmp(buf, "Features", 8) == 0)
{
char *p;
#if defined(HAVE_ARMV5TE)
p=strstr(buf, " edsp");
if (p != NULL && (p[5] == ' ' || p[5] == '\n'))
{
flags |= HAS_EDSP;
}
#if defined(HAVE_ARMV7)
p = strstr(buf, " neon");
if (p != NULL && (p[5] == ' ' || p[5] == '\n'))
{
flags |= HAS_NEON;
}
#endif
#endif
}
#endif
#if defined(HAVE_ARMV6)
if (memcmp(buf, "CPU architecture:",17) == 0){
int version;
version = atoi(buf+17);
if (version >= 6)
{
flags |= HAS_MEDIA;
}
}
#endif
}
fclose(fin);
}
return flags & mask;
}
#endif // defined(__linux__)
#elif !CONFIG_RUNTIME_CPU_DETECT
int arm_cpu_caps(void)
{
int flags;
int mask;
if (!arm_cpu_env_flags(&flags))
{
return flags;
}
mask = arm_cpu_env_mask();
#if defined(HAVE_ARMV5TE)
flags |= HAS_EDSP;
#endif
#if defined(HAVE_ARMV6)
flags |= HAS_MEDIA;
#endif
#if defined(HAVE_ARMV7)
flags |= HAS_NEON;
#endif
return flags & mask;
}
#else
#error "--enable-runtime-cpu-detect selected, but no CPU detection method " \
"available for your platform. Reconfigure without --enable-runtime-cpu-detect."
#endif