mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-06 13:29:56 -05:00
5effc83479
FSF addresses used in PA sources are no longer valid and rpmlint generates numerous warnings during packaging because of this. This patch changes all FSF addresses to FSF web page according to the GPL how-to: https://www.gnu.org/licenses/gpl-howto.en.html Done automatically by sed-ing through sources.
135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
/***
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This file is part of PulseAudio.
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Copyright 2004-2006 Lennart Poettering
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Copyright 2009 Wim Taymans <wim.taymans@collabora.co.uk>
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdint.h>
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#include <pulsecore/log.h>
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#include "cpu-x86.h"
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#if defined (__i386__) || defined (__amd64__)
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static void get_cpuid(uint32_t op, uint32_t *a, uint32_t *b, uint32_t *c, uint32_t *d) {
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__asm__ __volatile__ (
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" push %%"PA_REG_b" \n\t"
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" cpuid \n\t"
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" mov %%ebx, %%esi \n\t"
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" pop %%"PA_REG_b" \n\t"
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: "=a" (*a), "=S" (*b), "=c" (*c), "=d" (*d)
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: "0" (op)
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);
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}
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#endif
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void pa_cpu_get_x86_flags(pa_cpu_x86_flag_t *flags) {
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#if defined (__i386__) || defined (__amd64__)
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uint32_t eax, ebx, ecx, edx;
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uint32_t level;
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*flags = 0;
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/* get standard level */
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get_cpuid(0x00000000, &level, &ebx, &ecx, &edx);
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if (level >= 1) {
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get_cpuid(0x00000001, &eax, &ebx, &ecx, &edx);
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if (edx & (1<<15))
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*flags |= PA_CPU_X86_CMOV;
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if (edx & (1<<23))
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*flags |= PA_CPU_X86_MMX;
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if (edx & (1<<25))
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*flags |= PA_CPU_X86_SSE;
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if (edx & (1<<26))
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*flags |= PA_CPU_X86_SSE2;
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if (ecx & (1<<0))
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*flags |= PA_CPU_X86_SSE3;
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if (ecx & (1<<9))
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*flags |= PA_CPU_X86_SSSE3;
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if (ecx & (1<<19))
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*flags |= PA_CPU_X86_SSE4_1;
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if (ecx & (1<<20))
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*flags |= PA_CPU_X86_SSE4_2;
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}
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/* get extended level */
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get_cpuid(0x80000000, &level, &ebx, &ecx, &edx);
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if (level >= 0x80000001) {
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get_cpuid(0x80000001, &eax, &ebx, &ecx, &edx);
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if (edx & (1<<22))
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*flags |= PA_CPU_X86_MMXEXT;
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if (edx & (1<<23))
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*flags |= PA_CPU_X86_MMX;
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if (edx & (1<<30))
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*flags |= PA_CPU_X86_3DNOWEXT;
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if (edx & (1<<31))
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*flags |= PA_CPU_X86_3DNOW;
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}
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pa_log_info("CPU flags: %s%s%s%s%s%s%s%s%s%s%s",
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(*flags & PA_CPU_X86_CMOV) ? "CMOV " : "",
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(*flags & PA_CPU_X86_MMX) ? "MMX " : "",
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(*flags & PA_CPU_X86_SSE) ? "SSE " : "",
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(*flags & PA_CPU_X86_SSE2) ? "SSE2 " : "",
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(*flags & PA_CPU_X86_SSE3) ? "SSE3 " : "",
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(*flags & PA_CPU_X86_SSSE3) ? "SSSE3 " : "",
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(*flags & PA_CPU_X86_SSE4_1) ? "SSE4_1 " : "",
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(*flags & PA_CPU_X86_SSE4_2) ? "SSE4_2 " : "",
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(*flags & PA_CPU_X86_MMXEXT) ? "MMXEXT " : "",
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(*flags & PA_CPU_X86_3DNOW) ? "3DNOW " : "",
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(*flags & PA_CPU_X86_3DNOWEXT) ? "3DNOWEXT " : "");
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#endif /* defined (__i386__) || defined (__amd64__) */
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}
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bool pa_cpu_init_x86(pa_cpu_x86_flag_t *flags) {
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#if defined (__i386__) || defined (__amd64__)
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pa_cpu_get_x86_flags(flags);
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/* activate various optimisations */
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if (*flags & PA_CPU_X86_MMX) {
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pa_volume_func_init_mmx(*flags);
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pa_remap_func_init_mmx(*flags);
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}
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if (*flags & (PA_CPU_X86_SSE | PA_CPU_X86_SSE2)) {
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pa_volume_func_init_sse(*flags);
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pa_remap_func_init_sse(*flags);
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pa_convert_func_init_sse(*flags);
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}
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return true;
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#else /* defined (__i386__) || defined (__amd64__) */
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return false;
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#endif /* defined (__i386__) || defined (__amd64__) */
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}
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