diff options
| author | Jan Beich <[email protected]> | 2019-09-16 11:42:07 +0000 |
|---|---|---|
| committer | Matt Turner <[email protected]> | 2019-10-09 12:55:13 -0700 |
| commit | e892d9337f080c5bbd78aaeaf53cca6e1231daa1 (patch) | |
| tree | c82bc7f6e1230c22c78612573ada1974d4c74288 /src/util | |
| parent | 8d2dd1f4f37277092bfb214fae36025c6563bb87 (diff) | |
util: detect AltiVec at runtime on BSDs
Reviewed-by: Matt Turner <[email protected]>
Signed-off-by: Jan Beich <[email protected]>
Diffstat (limited to 'src/util')
| -rw-r--r-- | src/util/u_cpu_detect.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/src/util/u_cpu_detect.c b/src/util/u_cpu_detect.c index ae553d88701..960f990636d 100644 --- a/src/util/u_cpu_detect.c +++ b/src/util/u_cpu_detect.c @@ -60,6 +60,9 @@ #include <sys/auxv.h> #define HAVE_ELF_AUX_INFO #endif +#if defined(PIPE_ARCH_PPC) +#include <machine/cpu.h> +#endif #endif #if defined(PIPE_OS_LINUX) @@ -96,7 +99,7 @@ static int has_cpuid(void); #endif -#if defined(PIPE_ARCH_PPC) && !defined(PIPE_OS_APPLE) && !defined(PIPE_OS_LINUX) +#if defined(PIPE_ARCH_PPC) && !defined(PIPE_OS_APPLE) && !defined(PIPE_OS_BSD) && !defined(PIPE_OS_LINUX) static jmp_buf __lv_powerpc_jmpbuf; static volatile sig_atomic_t __lv_powerpc_canjump = 0; @@ -125,8 +128,12 @@ check_os_altivec_support(void) #endif #if defined(__ALTIVEC__) && defined(__VSX__) /* Do nothing */ -#elif defined(PIPE_OS_APPLE) +#elif defined(PIPE_OS_APPLE) || defined(PIPE_OS_NETBSD) || defined(PIPE_OS_OPENBSD) +#ifdef HW_VECTORUNIT int sels[2] = {CTL_HW, HW_VECTORUNIT}; +#else + int sels[2] = {CTL_MACHDEP, CPU_ALTIVEC}; +#endif int has_vu = 0; int len = sizeof (has_vu); int err; @@ -138,7 +145,19 @@ check_os_altivec_support(void) util_cpu_caps.has_altivec = 1; } } -#elif defined(PIPE_OS_LINUX) /* !PIPE_OS_APPLE */ +#elif defined(PIPE_OS_FREEBSD) /* !PIPE_OS_APPLE && !PIPE_OS_NETBSD && !PIPE_OS_OPENBSD */ + unsigned long hwcap = 0; +#ifdef HAVE_ELF_AUX_INFO + elf_aux_info(AT_HWCAP, &hwcap, sizeof(hwcap)); +#else + size_t len = sizeof(hwcap); + sysctlbyname("hw.cpu_features", &hwcap, &len, NULL, 0); +#endif + if (hwcap & PPC_FEATURE_HAS_ALTIVEC) + util_cpu_caps.has_altivec = 1; + if (hwcap & PPC_FEATURE_HAS_VSX) + util_cpu_caps.has_vsx = 1; +#elif defined(PIPE_OS_LINUX) /* !PIPE_OS_FREEBSD */ #if defined(PIPE_ARCH_PPC_64) Elf64_auxv_t aux; #else @@ -159,7 +178,7 @@ check_os_altivec_support(void) } close(fd); } -#else /* !PIPE_OS_APPLE && !PIPE_OS_LINUX */ +#else /* !PIPE_OS_APPLE && !PIPE_OS_BSD && !PIPE_OS_LINUX */ /* not on Apple/Darwin or Linux, do it the brute-force way */ /* this is borrowed from the libmpeg2 library */ signal(SIGILL, sigill_handler); |