diff options
Diffstat (limited to 'src/main/jni/libyuv/source/cpu_id.cc')
-rw-r--r-- | src/main/jni/libyuv/source/cpu_id.cc | 293 |
1 files changed, 0 insertions, 293 deletions
diff --git a/src/main/jni/libyuv/source/cpu_id.cc b/src/main/jni/libyuv/source/cpu_id.cc deleted file mode 100644 index deb4c4465..000000000 --- a/src/main/jni/libyuv/source/cpu_id.cc +++ /dev/null @@ -1,293 +0,0 @@ -/* - * Copyright 2011 The LibYuv 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 "libyuv/cpu_id.h" - -#if defined(_MSC_VER) && !defined(__clang__) -#include <intrin.h> // For __cpuidex() -#endif -#if !defined(__pnacl__) && !defined(__CLR_VER) && \ - !defined(__native_client__) && \ - defined(_MSC_VER) && (_MSC_FULL_VER >= 160040219) -#include <immintrin.h> // For _xgetbv() -#endif - -#if !defined(__native_client__) -#include <stdlib.h> // For getenv() -#endif - -// For ArmCpuCaps() but unittested on all platforms -#include <stdio.h> -#include <string.h> - -#include "libyuv/basic_types.h" // For CPU_X86 - -#ifdef __cplusplus -namespace libyuv { -extern "C" { -#endif - -// For functions that use the stack and have runtime checks for overflow, -// use SAFEBUFFERS to avoid additional check. -#if defined(_MSC_VER) && (_MSC_FULL_VER >= 160040219) -#define SAFEBUFFERS __declspec(safebuffers) -#else -#define SAFEBUFFERS -#endif - -// Low level cpuid for X86. Returns zeros on other CPUs. -#if !defined(__pnacl__) && !defined(__CLR_VER) && \ - (defined(_M_IX86) || defined(_M_X64) || \ - defined(__i386__) || defined(__x86_64__)) -LIBYUV_API -void CpuId(uint32 info_eax, uint32 info_ecx, uint32* cpu_info) { -#if defined(_MSC_VER) && !defined(__clang__) -#if (_MSC_FULL_VER >= 160040219) - __cpuidex((int*)(cpu_info), info_eax, info_ecx); -#elif defined(_M_IX86) - __asm { - mov eax, info_eax - mov ecx, info_ecx - mov edi, cpu_info - cpuid - mov [edi], eax - mov [edi + 4], ebx - mov [edi + 8], ecx - mov [edi + 12], edx - } -#else - if (info_ecx == 0) { - __cpuid((int*)(cpu_info), info_eax); - } else { - cpu_info[3] = cpu_info[2] = cpu_info[1] = cpu_info[0] = 0; - } -#endif -#else // defined(_MSC_VER) - uint32 info_ebx, info_edx; - asm volatile ( // NOLINT -#if defined( __i386__) && defined(__PIC__) - // Preserve ebx for fpic 32 bit. - "mov %%ebx, %%edi \n" - "cpuid \n" - "xchg %%edi, %%ebx \n" - : "=D" (info_ebx), -#else - "cpuid \n" - : "=b" (info_ebx), -#endif // defined( __i386__) && defined(__PIC__) - "+a" (info_eax), "+c" (info_ecx), "=d" (info_edx)); - cpu_info[0] = info_eax; - cpu_info[1] = info_ebx; - cpu_info[2] = info_ecx; - cpu_info[3] = info_edx; -#endif // defined(_MSC_VER) -} - -#if !defined(__native_client__) -#define HAS_XGETBV -// X86 CPUs have xgetbv to detect OS saves high parts of ymm registers. -int TestOsSaveYmm() { - uint32 xcr0 = 0u; -#if defined(_MSC_VER) && (_MSC_FULL_VER >= 160040219) - xcr0 = (uint32)(_xgetbv(0)); // VS2010 SP1 required. -#elif defined(_M_IX86) && defined(_MSC_VER) - __asm { - xor ecx, ecx // xcr 0 - _asm _emit 0x0f _asm _emit 0x01 _asm _emit 0xd0 // For VS2010 and earlier. - mov xcr0, eax - } -#elif defined(__i386__) || defined(__x86_64__) - asm(".byte 0x0f, 0x01, 0xd0" : "=a" (xcr0) : "c" (0) : "%edx"); -#endif // defined(_MSC_VER) - return((xcr0 & 6) == 6); // Is ymm saved? -} -#endif // !defined(__native_client__) -#else -LIBYUV_API -void CpuId(uint32 eax, uint32 ecx, uint32* cpu_info) { - cpu_info[0] = cpu_info[1] = cpu_info[2] = cpu_info[3] = 0; -} -#endif - -// based on libvpx arm_cpudetect.c -// For Arm, but public to allow testing on any CPU -LIBYUV_API SAFEBUFFERS -int ArmCpuCaps(const char* cpuinfo_name) { - char cpuinfo_line[512]; - FILE* f = fopen(cpuinfo_name, "r"); - if (!f) { - // Assume Neon if /proc/cpuinfo is unavailable. - // This will occur for Chrome sandbox for Pepper or Render process. - return kCpuHasNEON; - } - while (fgets(cpuinfo_line, sizeof(cpuinfo_line) - 1, f)) { - if (memcmp(cpuinfo_line, "Features", 8) == 0) { - char* p = strstr(cpuinfo_line, " neon"); - if (p && (p[5] == ' ' || p[5] == '\n')) { - fclose(f); - return kCpuHasNEON; - } - } - } - fclose(f); - return 0; -} - -#if defined(__mips__) && defined(__linux__) -static int MipsCpuCaps(const char* search_string) { - char cpuinfo_line[512]; - const char* file_name = "/proc/cpuinfo"; - FILE* f = fopen(file_name, "r"); - if (!f) { - // Assume DSP if /proc/cpuinfo is unavailable. - // This will occur for Chrome sandbox for Pepper or Render process. - return kCpuHasMIPS_DSP; - } - while (fgets(cpuinfo_line, sizeof(cpuinfo_line) - 1, f) != NULL) { - if (strstr(cpuinfo_line, search_string) != NULL) { - fclose(f); - return kCpuHasMIPS_DSP; - } - } - fclose(f); - return 0; -} -#endif - -// CPU detect function for SIMD instruction sets. -LIBYUV_API -int cpu_info_ = kCpuInit; // cpu_info is not initialized yet. - -// Test environment variable for disabling CPU features. Any non-zero value -// to disable. Zero ignored to make it easy to set the variable on/off. -#if !defined(__native_client__) && !defined(_M_ARM) - -static LIBYUV_BOOL TestEnv(const char* name) { - const char* var = getenv(name); - if (var) { - if (var[0] != '0') { - return LIBYUV_TRUE; - } - } - return LIBYUV_FALSE; -} -#else // nacl does not support getenv(). -static LIBYUV_BOOL TestEnv(const char*) { - return LIBYUV_FALSE; -} -#endif - -LIBYUV_API SAFEBUFFERS -int InitCpuFlags(void) { -#if !defined(__pnacl__) && !defined(__CLR_VER) && defined(CPU_X86) - - uint32 cpu_info0[4] = { 0, 0, 0, 0 }; - uint32 cpu_info1[4] = { 0, 0, 0, 0 }; - uint32 cpu_info7[4] = { 0, 0, 0, 0 }; - CpuId(0, 0, cpu_info0); - CpuId(1, 0, cpu_info1); - if (cpu_info0[0] >= 7) { - CpuId(7, 0, cpu_info7); - } - cpu_info_ = ((cpu_info1[3] & 0x04000000) ? kCpuHasSSE2 : 0) | - ((cpu_info1[2] & 0x00000200) ? kCpuHasSSSE3 : 0) | - ((cpu_info1[2] & 0x00080000) ? kCpuHasSSE41 : 0) | - ((cpu_info1[2] & 0x00100000) ? kCpuHasSSE42 : 0) | - ((cpu_info7[1] & 0x00000200) ? kCpuHasERMS : 0) | - ((cpu_info1[2] & 0x00001000) ? kCpuHasFMA3 : 0) | - kCpuHasX86; - -#ifdef HAS_XGETBV - if ((cpu_info1[2] & 0x18000000) == 0x18000000 && // AVX and OSSave - TestOsSaveYmm()) { // Saves YMM. - cpu_info_ |= ((cpu_info7[1] & 0x00000020) ? kCpuHasAVX2 : 0) | - kCpuHasAVX; - } -#endif - // Environment variable overrides for testing. - if (TestEnv("LIBYUV_DISABLE_X86")) { - cpu_info_ &= ~kCpuHasX86; - } - if (TestEnv("LIBYUV_DISABLE_SSE2")) { - cpu_info_ &= ~kCpuHasSSE2; - } - if (TestEnv("LIBYUV_DISABLE_SSSE3")) { - cpu_info_ &= ~kCpuHasSSSE3; - } - if (TestEnv("LIBYUV_DISABLE_SSE41")) { - cpu_info_ &= ~kCpuHasSSE41; - } - if (TestEnv("LIBYUV_DISABLE_SSE42")) { - cpu_info_ &= ~kCpuHasSSE42; - } - if (TestEnv("LIBYUV_DISABLE_AVX")) { - cpu_info_ &= ~kCpuHasAVX; - } - if (TestEnv("LIBYUV_DISABLE_AVX2")) { - cpu_info_ &= ~kCpuHasAVX2; - } - if (TestEnv("LIBYUV_DISABLE_ERMS")) { - cpu_info_ &= ~kCpuHasERMS; - } - if (TestEnv("LIBYUV_DISABLE_FMA3")) { - cpu_info_ &= ~kCpuHasFMA3; - } -#elif defined(__mips__) && defined(__linux__) - // Linux mips parse text file for dsp detect. - cpu_info_ = MipsCpuCaps("dsp"); // set kCpuHasMIPS_DSP. -#if defined(__mips_dspr2) - cpu_info_ |= kCpuHasMIPS_DSPR2; -#endif - cpu_info_ |= kCpuHasMIPS; - - if (getenv("LIBYUV_DISABLE_MIPS")) { - cpu_info_ &= ~kCpuHasMIPS; - } - if (getenv("LIBYUV_DISABLE_MIPS_DSP")) { - cpu_info_ &= ~kCpuHasMIPS_DSP; - } - if (getenv("LIBYUV_DISABLE_MIPS_DSPR2")) { - cpu_info_ &= ~kCpuHasMIPS_DSPR2; - } -#elif defined(__arm__) || defined(__aarch64__) -// gcc -mfpu=neon defines __ARM_NEON__ -// __ARM_NEON__ generates code that requires Neon. NaCL also requires Neon. -// For Linux, /proc/cpuinfo can be tested but without that assume Neon. -#if defined(__ARM_NEON__) || defined(__native_client__) || !defined(__linux__) - cpu_info_ = kCpuHasNEON; -// For aarch64(arm64), /proc/cpuinfo's feature is not complete, e.g. no neon -// flag in it. -// So for aarch64, neon enabling is hard coded here. -#elif defined(__aarch64__) - cpu_info_ = kCpuHasNEON; -#else - // Linux arm parse text file for neon detect. - cpu_info_ = ArmCpuCaps("/proc/cpuinfo"); -#endif - cpu_info_ |= kCpuHasARM; - if (TestEnv("LIBYUV_DISABLE_NEON")) { - cpu_info_ &= ~kCpuHasNEON; - } -#endif // __arm__ - if (TestEnv("LIBYUV_DISABLE_ASM")) { - cpu_info_ = 0; - } - return cpu_info_; -} - -LIBYUV_API -void MaskCpuFlags(int enable_flags) { - cpu_info_ = InitCpuFlags() & enable_flags; -} - -#ifdef __cplusplus -} // extern "C" -} // namespace libyuv -#endif |