From aa97e4d4981d61808a558c5ab36be6d3bcc2c4f6 Mon Sep 17 00:00:00 2001 From: Dave Chapman Date: Wed, 16 Feb 2005 19:33:19 +0000 Subject: Initial import of libFLAC from flac-1.1.2.tar.gz git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5983 a1c6a512-1295-4272-9138-f99709370657 --- apps/codecs/libFLAC/cpu.c | 179 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 179 insertions(+) create mode 100644 apps/codecs/libFLAC/cpu.c (limited to 'apps/codecs/libFLAC/cpu.c') diff --git a/apps/codecs/libFLAC/cpu.c b/apps/codecs/libFLAC/cpu.c new file mode 100644 index 0000000000..1e6b27994f --- /dev/null +++ b/apps/codecs/libFLAC/cpu.c @@ -0,0 +1,179 @@ +/* libFLAC - Free Lossless Audio Codec library + * Copyright (C) 2001,2002,2003,2004,2005 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. + */ + +#include "private/cpu.h" +#include +#include + +#ifdef HAVE_CONFIG_H +#include +#endif + +#if defined FLAC__CPU_PPC +#if !defined FLAC__NO_ASM +#if defined FLAC__SYS_DARWIN +#include +#include +#include +#include +#include +#ifndef CPU_SUBTYPE_POWERPC_970 +#define CPU_SUBTYPE_POWERPC_970 ((cpu_subtype_t) 100) +#endif +#else /* FLAC__SYS_DARWIN */ +#include +#include + +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 */ + +const unsigned FLAC__CPUINFO_IA32_CPUID_CMOV = 0x00008000; +const unsigned FLAC__CPUINFO_IA32_CPUID_MMX = 0x00800000; +const unsigned FLAC__CPUINFO_IA32_CPUID_FXSR = 0x01000000; +const unsigned FLAC__CPUINFO_IA32_CPUID_SSE = 0x02000000; +const unsigned FLAC__CPUINFO_IA32_CPUID_SSE2 = 0x04000000; + +const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_3DNOW = 0x80000000; +const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXT3DNOW = 0x40000000; +const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXTMMX = 0x00400000; + + +void FLAC__cpu_info(FLAC__CPUInfo *info) +{ +#ifdef FLAC__CPU_IA32 + info->type = FLAC__CPUINFO_TYPE_IA32; +#if !defined FLAC__NO_ASM && defined FLAC__HAS_NASM + info->use_asm = true; + { + unsigned cpuid = FLAC__cpu_info_asm_ia32(); + info->data.ia32.cmov = (cpuid & FLAC__CPUINFO_IA32_CPUID_CMOV)? true : false; + info->data.ia32.mmx = (cpuid & FLAC__CPUINFO_IA32_CPUID_MMX)? true : false; + info->data.ia32.fxsr = (cpuid & FLAC__CPUINFO_IA32_CPUID_FXSR)? true : false; + info->data.ia32.sse = (cpuid & FLAC__CPUINFO_IA32_CPUID_SSE)? true : false; + info->data.ia32.sse2 = (cpuid & FLAC__CPUINFO_IA32_CPUID_SSE2)? true : false; + +#ifndef FLAC__SSE_OS + info->data.ia32.fxsr = info->data.ia32.sse = info->data.ia32.sse2 = false; +#endif + +#ifdef FLAC__USE_3DNOW + cpuid = FLAC__cpu_info_extended_amd_asm_ia32(); + info->data.ia32._3dnow = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_3DNOW)? true : false; + info->data.ia32.ext3dnow = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXT3DNOW)? true : false; + info->data.ia32.extmmx = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXTMMX)? true : false; +#else + info->data.ia32._3dnow = info->data.ia32.ext3dnow = info->data.ia32.extmmx = false; +#endif + } +#else + info->use_asm = false; +#endif +#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 selectors[2] = { CTL_HW, HW_VECTORUNIT }; + int result = 0; + size_t length = sizeof(result); + int error = sysctl(selectors, 2, &result, &length, 0, 0); + + info->data.ppc.altivec = error==0 ? result!=0 : 0; + } + { + 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__SYS_DARWIN */ + { + /* no Darwin, do it the brute-force way */ + /* this is borrowed from MPlayer from the libmpeg2 library */ + info->data.ppc.altivec = 0; + info->data.ppc.ppc64 = 0; + + signal (SIGILL, sigill_handler); + 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); + } +#endif /* FLAC__SYS_DARWIN */ +#else /* FLAC__USE_ALTIVEC */ + info->data.ppc.altivec = 0; + info->data.ppc.ppc64 = 0; +#endif /* FLAC__USE_ALTIVEC */ +#else /* FLAC__NO_ASM */ + info->use_asm = false; +#endif /* FLAC__NO_ASM */ +#else + info->type = FLAC__CPUINFO_TYPE_UNKNOWN; + info->use_asm = false; +#endif +} -- cgit v1.2.3