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| author | atmos4 <atmos4@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2002-12-07 21:04:54 +0000 |
|---|---|---|
| committer | atmos4 <atmos4@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2002-12-07 21:04:54 +0000 |
| commit | bae716c76351567c8ab2546b11fdb4a6bc1191dd (patch) | |
| tree | 6e848ee77ef83bb9acaf75834cb70852d8e832a6 /cpudetect.c | |
| parent | 7caded971dd08e61633414afb92990153861270d (diff) | |
| download | mpv-bae716c76351567c8ab2546b11fdb4a6bc1191dd.tar.bz2 mpv-bae716c76351567c8ab2546b11fdb4a6bc1191dd.tar.xz | |
Runtime SSE detection for NEtBSD, patch by Nick Hudson <skrll at netbsd.org>
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@8402 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'cpudetect.c')
| -rw-r--r-- | cpudetect.c | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/cpudetect.c b/cpudetect.c index cf466fb400..7d9b102acf 100644 --- a/cpudetect.c +++ b/cpudetect.c @@ -14,6 +14,11 @@ CpuCaps gCpuCaps; #include <stdio.h> #include <string.h> +#ifdef __NetBSD__ +#include <sys/param.h> +#include <setjmp.h> +#endif + #ifdef __FreeBSD__ #include <sys/types.h> #include <sys/sysctl.h> @@ -147,7 +152,7 @@ void GetCpuCaps( CpuCaps *caps) #endif /* FIXME: Does SSE2 need more OS support, too? */ -#if defined(__linux__) || defined(__FreeBSD__) +#if defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__) if (caps->hasSSE) check_os_katmai_support(); if (!caps->hasSSE) @@ -237,6 +242,15 @@ char *GetCpuFriendlyName(unsigned int regs[], unsigned int regs2[]){ #undef CPUID_STEPPING +#ifdef __NetBSD__ +jmp_buf sseCheckEnv; + +void sseCheckHandler(int i) +{ + longjmp(sseCheckEnv, 1); +} +#endif + #if defined(__linux__) && defined(_POSIX_SOURCE) && defined(X86_FXSR_MAGIC) static void sigill_handler_sse( int signal, struct sigcontext sc ) { @@ -293,6 +307,36 @@ static void check_os_katmai_support( void ) if (ret || !has_sse) gCpuCaps.hasSSE=0; +#elif defined(__NetBSD__) +#if __NetBSD_Version__ >= 105260000 + if ( gCpuCaps.hasSSE ) { + void (*oldHandler)(int); + + mp_msg(MSGT_CPUDETECT,MSGL_V, "Testing OS support for SSE... " ); + + oldHandler = signal(SIGILL, sseCheckHandler); + if (setjmp(sseCheckEnv)) { + gCpuCaps.hasSSE = 0; + } else { + __asm__ __volatile__ ( + "subl $0x10, %esp \n" + "movups %xmm0, (%esp) \n" + "emms \n" + "addl $0x10, %esp \n" + ); + } + signal(SIGILL, oldHandler); + + if ( gCpuCaps.hasSSE ) { + mp_msg(MSGT_CPUDETECT,MSGL_V, "no!\n" ); + } else { + mp_msg(MSGT_CPUDETECT,MSGL_V, "yes!\n" ); + } + } +#else + gCpuCaps.hasSSE = 0 + mp_msg(MSGT_CPUDETECT,MSGL_WARN, "No OS support for SSE, disabling to be safe.\n" ); +#endif #elif defined(__linux__) #if defined(_POSIX_SOURCE) && defined(X86_FXSR_MAGIC) struct sigaction saved_sigill; |