diff options
Diffstat (limited to '3rdparty/libflac/src/libFLAC/cpu.c')
-rw-r--r-- | 3rdparty/libflac/src/libFLAC/cpu.c | 422 |
1 files changed, 0 insertions, 422 deletions
diff --git a/3rdparty/libflac/src/libFLAC/cpu.c b/3rdparty/libflac/src/libFLAC/cpu.c deleted file mode 100644 index e5ea78ea37c..00000000000 --- a/3rdparty/libflac/src/libFLAC/cpu.c +++ /dev/null @@ -1,422 +0,0 @@ -/* libFLAC - Free Lossless Audio Codec library - * Copyright (C) 2001,2002,2003,2004,2005,2006,2007 Josh Coalson - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * - Neither the name of the Xiph.org Foundation nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -#include "private/cpu.h" -#include <stdlib.h> -#include <stdio.h> - -#if defined FLAC__CPU_IA32 -# include <signal.h> -#elif defined FLAC__CPU_PPC -# if !defined FLAC__NO_ASM -# if defined FLAC__SYS_DARWIN -# include <sys/sysctl.h> -# include <mach/mach.h> -# include <mach/mach_host.h> -# include <mach/host_info.h> -# include <mach/machine.h> -# ifndef CPU_SUBTYPE_POWERPC_970 -# define CPU_SUBTYPE_POWERPC_970 ((cpu_subtype_t) 100) -# endif -# else /* FLAC__SYS_DARWIN */ - -# include <signal.h> -# include <setjmp.h> - -static sigjmp_buf jmpbuf; -static volatile sig_atomic_t canjump = 0; - -static void sigill_handler (int sig) -{ - if (!canjump) { - signal (sig, SIG_DFL); - raise (sig); - } - canjump = 0; - siglongjmp (jmpbuf, 1); -} -# endif /* FLAC__SYS_DARWIN */ -# endif /* FLAC__NO_ASM */ -#endif /* FLAC__CPU_PPC */ - -#if defined (__NetBSD__) || defined(__OpenBSD__) -#include <sys/param.h> -#include <sys/sysctl.h> -#include <machine/cpu.h> -#endif - -#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) -#include <sys/types.h> -#include <sys/sysctl.h> -#endif - -#if defined(__APPLE__) -/* how to get sysctlbyname()? */ -#endif - -#if defined(FLAC__CPU_IA32) && !defined(FLAC__NO_ASM) && defined (FLAC__HAS_NASM) -/* these are flags in EDX of CPUID AX=00000001 */ -static const unsigned FLAC__CPUINFO_IA32_CPUID_CMOV = 0x00008000; -static const unsigned FLAC__CPUINFO_IA32_CPUID_MMX = 0x00800000; -static const unsigned FLAC__CPUINFO_IA32_CPUID_FXSR = 0x01000000; -static const unsigned FLAC__CPUINFO_IA32_CPUID_SSE = 0x02000000; -static const unsigned FLAC__CPUINFO_IA32_CPUID_SSE2 = 0x04000000; -/* these are flags in ECX of CPUID AX=00000001 */ -static const unsigned FLAC__CPUINFO_IA32_CPUID_SSE3 = 0x00000001; -static const unsigned FLAC__CPUINFO_IA32_CPUID_SSSE3 = 0x00000200; -#ifdef FLAC__USE_3DNOW -/* these are flags in EDX of CPUID AX=80000001 */ -static const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_3DNOW = 0x80000000; -static const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXT3DNOW = 0x40000000; -static const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXTMMX = 0x00400000; -#endif -#endif - - -/* - * Extra stuff needed for detection of OS support for SSE on IA-32 - */ -#if defined(FLAC__CPU_IA32) && !defined FLAC__NO_ASM && defined FLAC__HAS_NASM && !defined FLAC__NO_SSE_OS && !defined FLAC__SSE_OS -# if defined(__linux__) -/* - * If the OS doesn't support SSE, we will get here with a SIGILL. We - * modify the return address to jump over the offending SSE instruction - * and also the operation following it that indicates the instruction - * executed successfully. In this way we use no global variables and - * stay thread-safe. - * - * 3 + 3 + 6: - * 3 bytes for "xorps xmm0,xmm0" - * 3 bytes for estimate of how long the follwing "inc var" instruction is - * 6 bytes extra in case our estimate is wrong - * 12 bytes puts us in the NOP "landing zone" - */ -# undef USE_OBSOLETE_SIGCONTEXT_FLAVOR /* #define this to use the older signal handler method */ -# ifdef USE_OBSOLETE_SIGCONTEXT_FLAVOR - static void sigill_handler_sse_os(int signal, struct sigcontext sc) - { - (void)signal; - sc.eip += 3 + 3 + 6; - } -# else -# include <sys/ucontext.h> - static void sigill_handler_sse_os(int signal, siginfo_t *si, void *uc) - { - (void)signal, (void)si; - ((ucontext_t*)uc)->uc_mcontext.gregs[14/*REG_EIP*/] += 3 + 3 + 6; - } -# endif -# elif defined(_MSC_VER) -# include <windows.h> -# undef USE_TRY_CATCH_FLAVOR /* #define this to use the try/catch method for catching illegal opcode exception */ -# ifdef USE_TRY_CATCH_FLAVOR -# else - LONG CALLBACK sigill_handler_sse_os(EXCEPTION_POINTERS *ep) - { - if(ep->ExceptionRecord->ExceptionCode == EXCEPTION_ILLEGAL_INSTRUCTION) { - ep->ContextRecord->Eip += 3 + 3 + 6; - return EXCEPTION_CONTINUE_EXECUTION; - } - return EXCEPTION_CONTINUE_SEARCH; - } -# endif -# endif -#endif - - -void FLAC__cpu_info(FLAC__CPUInfo *info) -{ -/* - * IA32-specific - */ -#ifdef FLAC__CPU_IA32 - info->type = FLAC__CPUINFO_TYPE_IA32; -#if !defined FLAC__NO_ASM && defined FLAC__HAS_NASM - info->use_asm = true; /* we assume a minimum of 80386 with FLAC__CPU_IA32 */ - info->data.ia32.cpuid = FLAC__cpu_have_cpuid_asm_ia32()? true : false; - info->data.ia32.bswap = info->data.ia32.cpuid; /* CPUID => BSWAP since it came after */ - info->data.ia32.cmov = false; - info->data.ia32.mmx = false; - info->data.ia32.fxsr = false; - info->data.ia32.sse = false; - info->data.ia32.sse2 = false; - info->data.ia32.sse3 = false; - info->data.ia32.ssse3 = false; - info->data.ia32._3dnow = false; - info->data.ia32.ext3dnow = false; - info->data.ia32.extmmx = false; - if(info->data.ia32.cpuid) { - /* http://www.sandpile.org/ia32/cpuid.htm */ - FLAC__uint32 flags_edx, flags_ecx; - FLAC__cpu_info_asm_ia32(&flags_edx, &flags_ecx); - info->data.ia32.cmov = (flags_edx & FLAC__CPUINFO_IA32_CPUID_CMOV )? true : false; - info->data.ia32.mmx = (flags_edx & FLAC__CPUINFO_IA32_CPUID_MMX )? true : false; - info->data.ia32.fxsr = (flags_edx & FLAC__CPUINFO_IA32_CPUID_FXSR )? true : false; - info->data.ia32.sse = (flags_edx & FLAC__CPUINFO_IA32_CPUID_SSE )? true : false; - info->data.ia32.sse2 = (flags_edx & FLAC__CPUINFO_IA32_CPUID_SSE2 )? true : false; - info->data.ia32.sse3 = (flags_ecx & FLAC__CPUINFO_IA32_CPUID_SSE3 )? true : false; - info->data.ia32.ssse3 = (flags_ecx & FLAC__CPUINFO_IA32_CPUID_SSSE3)? true : false; - -#ifdef FLAC__USE_3DNOW - flags_edx = FLAC__cpu_info_extended_amd_asm_ia32(); - info->data.ia32._3dnow = (flags_edx & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_3DNOW )? true : false; - info->data.ia32.ext3dnow = (flags_edx & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXT3DNOW)? true : false; - info->data.ia32.extmmx = (flags_edx & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXTMMX )? true : false; -#else - info->data.ia32._3dnow = info->data.ia32.ext3dnow = info->data.ia32.extmmx = false; -#endif - -#ifdef DEBUG - fprintf(stderr, "CPU info (IA-32):\n"); - fprintf(stderr, " CPUID ...... %c\n", info->data.ia32.cpuid ? 'Y' : 'n'); - fprintf(stderr, " BSWAP ...... %c\n", info->data.ia32.bswap ? 'Y' : 'n'); - fprintf(stderr, " CMOV ....... %c\n", info->data.ia32.cmov ? 'Y' : 'n'); - fprintf(stderr, " MMX ........ %c\n", info->data.ia32.mmx ? 'Y' : 'n'); - fprintf(stderr, " FXSR ....... %c\n", info->data.ia32.fxsr ? 'Y' : 'n'); - fprintf(stderr, " SSE ........ %c\n", info->data.ia32.sse ? 'Y' : 'n'); - fprintf(stderr, " SSE2 ....... %c\n", info->data.ia32.sse2 ? 'Y' : 'n'); - fprintf(stderr, " SSE3 ....... %c\n", info->data.ia32.sse3 ? 'Y' : 'n'); - fprintf(stderr, " SSSE3 ...... %c\n", info->data.ia32.ssse3 ? 'Y' : 'n'); - fprintf(stderr, " 3DNow! ..... %c\n", info->data.ia32._3dnow ? 'Y' : 'n'); - fprintf(stderr, " 3DNow!-ext . %c\n", info->data.ia32.ext3dnow? 'Y' : 'n'); - fprintf(stderr, " 3DNow!-MMX . %c\n", info->data.ia32.extmmx ? 'Y' : 'n'); -#endif - - /* - * now have to check for OS support of SSE/SSE2 - */ - if(info->data.ia32.fxsr || info->data.ia32.sse || info->data.ia32.sse2) { -#if defined FLAC__NO_SSE_OS - /* assume user knows better than us; turn it off */ - info->data.ia32.fxsr = info->data.ia32.sse = info->data.ia32.sse2 = info->data.ia32.sse3 = info->data.ia32.ssse3 = false; -#elif defined FLAC__SSE_OS - /* assume user knows better than us; leave as detected above */ -#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) || defined(__APPLE__) - int sse = 0; - size_t len; - /* at least one of these must work: */ - len = sizeof(sse); sse = sse || (sysctlbyname("hw.instruction_sse", &sse, &len, NULL, 0) == 0 && sse); - len = sizeof(sse); sse = sse || (sysctlbyname("hw.optional.sse" , &sse, &len, NULL, 0) == 0 && sse); /* __APPLE__ ? */ - if(!sse) - info->data.ia32.fxsr = info->data.ia32.sse = info->data.ia32.sse2 = info->data.ia32.sse3 = info->data.ia32.ssse3 = false; -#elif defined(__NetBSD__) || defined (__OpenBSD__) -# if __NetBSD_Version__ >= 105250000 || (defined __OpenBSD__) - int val = 0, mib[2] = { CTL_MACHDEP, CPU_SSE }; - size_t len = sizeof(val); - if(sysctl(mib, 2, &val, &len, NULL, 0) < 0 || !val) - info->data.ia32.fxsr = info->data.ia32.sse = info->data.ia32.sse2 = info->data.ia32.sse3 = info->data.ia32.ssse3 = false; - else { /* double-check SSE2 */ - mib[1] = CPU_SSE2; - len = sizeof(val); - if(sysctl(mib, 2, &val, &len, NULL, 0) < 0 || !val) - info->data.ia32.sse2 = info->data.ia32.sse3 = info->data.ia32.ssse3 = false; - } -# else - info->data.ia32.fxsr = info->data.ia32.sse = info->data.ia32.sse2 = info->data.ia32.sse3 = info->data.ia32.ssse3 = false; -# endif -#elif defined(__linux__) - int sse = 0; - struct sigaction sigill_save; -#ifdef USE_OBSOLETE_SIGCONTEXT_FLAVOR - if(0 == sigaction(SIGILL, NULL, &sigill_save) && signal(SIGILL, (void (*)(int))sigill_handler_sse_os) != SIG_ERR) -#else - struct sigaction sigill_sse; - sigill_sse.sa_sigaction = sigill_handler_sse_os; - __sigemptyset(&sigill_sse.sa_mask); - sigill_sse.sa_flags = SA_SIGINFO | SA_RESETHAND; /* SA_RESETHAND just in case our SIGILL return jump breaks, so we don't get stuck in a loop */ - if(0 == sigaction(SIGILL, &sigill_sse, &sigill_save)) -#endif - { - /* http://www.ibiblio.org/gferg/ldp/GCC-Inline-Assembly-HOWTO.html */ - /* see sigill_handler_sse_os() for an explanation of the following: */ - asm volatile ( - "xorl %0,%0\n\t" /* for some reason, still need to do this to clear 'sse' var */ - "xorps %%xmm0,%%xmm0\n\t" /* will cause SIGILL if unsupported by OS */ - "incl %0\n\t" /* SIGILL handler will jump over this */ - /* landing zone */ - "nop\n\t" /* SIGILL jump lands here if "inc" is 9 bytes */ - "nop\n\t" - "nop\n\t" - "nop\n\t" - "nop\n\t" - "nop\n\t" - "nop\n\t" /* SIGILL jump lands here if "inc" is 3 bytes (expected) */ - "nop\n\t" - "nop" /* SIGILL jump lands here if "inc" is 1 byte */ - : "=r"(sse) - : "r"(sse) - ); - - sigaction(SIGILL, &sigill_save, NULL); - } - - if(!sse) - info->data.ia32.fxsr = info->data.ia32.sse = info->data.ia32.sse2 = info->data.ia32.sse3 = info->data.ia32.ssse3 = false; -#elif defined(_MSC_VER) -# ifdef USE_TRY_CATCH_FLAVOR - _try { - __asm { -# if _MSC_VER <= 1200 - /* VC6 assembler doesn't know SSE, have to emit bytecode instead */ - _emit 0x0F - _emit 0x57 - _emit 0xC0 -# else - xorps xmm0,xmm0 -# endif - } - } - _except(EXCEPTION_EXECUTE_HANDLER) { - if (_exception_code() == STATUS_ILLEGAL_INSTRUCTION) - info->data.ia32.fxsr = info->data.ia32.sse = info->data.ia32.sse2 = info->data.ia32.sse3 = info->data.ia32.ssse3 = false; - } -# else - int sse = 0; - LPTOP_LEVEL_EXCEPTION_FILTER save = SetUnhandledExceptionFilter(sigill_handler_sse_os); - /* see GCC version above for explanation */ - /* http://msdn2.microsoft.com/en-us/library/4ks26t93.aspx */ - /* http://www.codeproject.com/cpp/gccasm.asp */ - /* http://www.hick.org/~mmiller/msvc_inline_asm.html */ - __asm { -# if _MSC_VER <= 1200 - /* VC6 assembler doesn't know SSE, have to emit bytecode instead */ - _emit 0x0F - _emit 0x57 - _emit 0xC0 -# else - xorps xmm0,xmm0 -# endif - inc sse - nop - nop - nop - nop - nop - nop - nop - nop - nop - } - SetUnhandledExceptionFilter(save); - if(!sse) - info->data.ia32.fxsr = info->data.ia32.sse = info->data.ia32.sse2 = info->data.ia32.sse3 = info->data.ia32.ssse3 = false; -# endif -#else - /* no way to test, disable to be safe */ - info->data.ia32.fxsr = info->data.ia32.sse = info->data.ia32.sse2 = info->data.ia32.sse3 = info->data.ia32.ssse3 = false; -#endif -#ifdef DEBUG - fprintf(stderr, " SSE OS sup . %c\n", info->data.ia32.sse ? 'Y' : 'n'); -#endif - - } - } -#else - info->use_asm = false; -#endif - -/* - * PPC-specific - */ -#elif defined FLAC__CPU_PPC - info->type = FLAC__CPUINFO_TYPE_PPC; -# if !defined FLAC__NO_ASM - info->use_asm = true; -# ifdef FLAC__USE_ALTIVEC -# if defined FLAC__SYS_DARWIN - { - int val = 0, mib[2] = { CTL_HW, HW_VECTORUNIT }; - size_t len = sizeof(val); - info->data.ppc.altivec = !(sysctl(mib, 2, &val, &len, NULL, 0) || !val); - } - { - host_basic_info_data_t hostInfo; - mach_msg_type_number_t infoCount; - - infoCount = HOST_BASIC_INFO_COUNT; - host_info(mach_host_self(), HOST_BASIC_INFO, (host_info_t)&hostInfo, &infoCount); - - info->data.ppc.ppc64 = (hostInfo.cpu_type == CPU_TYPE_POWERPC) && (hostInfo.cpu_subtype == CPU_SUBTYPE_POWERPC_970); - } -# else /* FLAC__USE_ALTIVEC && !FLAC__SYS_DARWIN */ - { - /* no Darwin, do it the brute-force way */ - /* @@@@@@ this is not thread-safe; replace with SSE OS method above or remove */ - info->data.ppc.altivec = 0; - info->data.ppc.ppc64 = 0; - - signal (SIGILL, sigill_handler); - canjump = 0; - if (!sigsetjmp (jmpbuf, 1)) { - canjump = 1; - - asm volatile ( - "mtspr 256, %0\n\t" - "vand %%v0, %%v0, %%v0" - : - : "r" (-1) - ); - - info->data.ppc.altivec = 1; - } - canjump = 0; - if (!sigsetjmp (jmpbuf, 1)) { - int x = 0; - canjump = 1; - - /* PPC64 hardware implements the cntlzd instruction */ - asm volatile ("cntlzd %0, %1" : "=r" (x) : "r" (x) ); - - info->data.ppc.ppc64 = 1; - } - signal (SIGILL, SIG_DFL); /*@@@@@@ should save and restore old signal */ - } -# endif -# else /* !FLAC__USE_ALTIVEC */ - info->data.ppc.altivec = 0; - info->data.ppc.ppc64 = 0; -# endif -# else - info->use_asm = false; -# endif - -/* - * unknown CPI - */ -#else - info->type = FLAC__CPUINFO_TYPE_UNKNOWN; - info->use_asm = false; -#endif -} |