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cpu.c
资源名称:tcpmp.rar [点击查看]
上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:6k
源码类别:
Windows CE
开发平台:
C/C++
- /* 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 <stdlib.h>
- #include <stdio.h>
- #ifdef HAVE_CONFIG_H
- #include <config.h>
- #endif
- #if 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 */
- 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, %0nt"
- "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
- }