int ff_get_cpu_flags_ppc(void) { #if HAVE_ALTIVEC #ifdef __AMIGAOS4__ ULONG result = 0; extern struct ExecIFace *IExec; IExec->GetCPUInfoTags(GCIT_VectorUnit, &result, TAG_DONE); if (result == VECTORTYPE_ALTIVEC) return AV_CPU_FLAG_ALTIVEC; return 0; #elif defined(__APPLE__) || defined(__OpenBSD__) #ifdef __OpenBSD__ int sels[2] = {CTL_MACHDEP, CPU_ALTIVEC}; #else int sels[2] = {CTL_HW, HW_VECTORUNIT}; #endif int has_vu = 0; size_t len = sizeof(has_vu); int err; err = sysctl(sels, 2, &has_vu, &len, NULL, 0); if (err == 0) return has_vu ? AV_CPU_FLAG_ALTIVEC : 0; return 0; #elif defined(__linux__) // The linux kernel could have the altivec support disabled // even if the cpu has it. int i, ret = 0; int fd = open("/proc/self/auxv", O_RDONLY); unsigned long buf[64] = { 0 }; ssize_t count; if (fd < 0) return 0; while ((count = read(fd, buf, sizeof(buf))) > 0) { for (i = 0; i < count / sizeof(*buf); i += 2) { if (buf[i] == AT_NULL) goto out; if (buf[i] == AT_HWCAP) { if (buf[i + 1] & PPC_FEATURE_HAS_ALTIVEC) ret = AV_CPU_FLAG_ALTIVEC; goto out; } } } out: close(fd); return ret; #elif CONFIG_RUNTIME_CPUDETECT int proc_ver; // Support of mfspr PVR emulation added in Linux 2.6.17. __asm__ volatile("mfspr %0, 287" : "=r" (proc_ver)); proc_ver >>= 16; if (proc_ver & 0x8000 || proc_ver == 0x000c || proc_ver == 0x0039 || proc_ver == 0x003c || proc_ver == 0x0044 || proc_ver == 0x0045 || proc_ver == 0x0070) return AV_CPU_FLAG_ALTIVEC; return 0; #else // Since we were compiled for AltiVec, just assume we have it // until someone comes up with a proper way (not involving signal hacks). return AV_CPU_FLAG_ALTIVEC; #endif /* __AMIGAOS4__ */ #endif /* HAVE_ALTIVEC */ return 0; }
int ff_get_cpu_flags_ppc(void) { #if HAVE_ALTIVEC #ifdef __AMIGAOS4__ ULONG result = 0; extern struct ExecIFace *IExec; IExec->GetCPUInfoTags(GCIT_VectorUnit, &result, TAG_DONE); if (result == VECTORTYPE_ALTIVEC) return AV_CPU_FLAG_ALTIVEC; return 0; #elif defined(__APPLE__) || defined(__OpenBSD__) #ifdef __OpenBSD__ int sels[2] = {CTL_MACHDEP, CPU_ALTIVEC}; #else int sels[2] = {CTL_HW, HW_VECTORUNIT}; #endif int has_vu = 0; size_t len = sizeof(has_vu); int err; err = sysctl(sels, 2, &has_vu, &len, NULL, 0); if (err == 0) return has_vu ? AV_CPU_FLAG_ALTIVEC : 0; return 0; #elif defined(__linux__)  