PR #22663 opened by brad URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/22663 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/22663.patch
The getauxval() and auxv methods cover the last 25+ years of Linux. Signed-off-by: Brad Smith <[email protected]> >From b30f803e0188a10e03cb905cf130c9ebee321d8b Mon Sep 17 00:00:00 2001 From: Brad Smith <[email protected]> Date: Tue, 31 Mar 2026 00:22:06 -0400 Subject: [PATCH] libavutil/ppc: Remove mfspr-based AltiVec detection code for Linux The getauxval() and auxv methods cover the last 25+ years of Linux. Signed-off-by: Brad Smith <[email protected]> --- libavutil/ppc/cpu.c | 33 --------------------------------- 1 file changed, 33 deletions(-) diff --git a/libavutil/ppc/cpu.c b/libavutil/ppc/cpu.c index 9f9c073434..e4830f8a74 100644 --- a/libavutil/ppc/cpu.c +++ b/libavutil/ppc/cpu.c @@ -134,39 +134,6 @@ int ff_get_cpu_flags_ppc(void) out: close(fd); return ret; -#elif CONFIG_RUNTIME_CPUDETECT && defined(__linux__) -#define PVR_G4_7400 0x000C -#define PVR_G5_970 0x0039 -#define PVR_G5_970FX 0x003C -#define PVR_G5_970MP 0x0044 -#define PVR_G5_970GX 0x0045 -#define PVR_POWER6 0x003E -#define PVR_POWER7 0x003F -#define PVR_POWER8 0x004B -#define PVR_CELL_PPU 0x0070 - int ret = 0; - 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 == PVR_G4_7400 || - proc_ver == PVR_G5_970 || - proc_ver == PVR_G5_970FX || - proc_ver == PVR_G5_970MP || - proc_ver == PVR_G5_970GX || - proc_ver == PVR_POWER6 || - proc_ver == PVR_POWER7 || - proc_ver == PVR_POWER8 || - proc_ver == PVR_CELL_PPU) - ret = AV_CPU_FLAG_ALTIVEC; - if (proc_ver == PVR_POWER7 || - proc_ver == PVR_POWER8) - ret |= AV_CPU_FLAG_VSX; - if (proc_ver == PVR_POWER8) - ret |= AV_CPU_FLAG_POWER8; - - return ret; #else // Since we were compiled for AltiVec, just assume we have it // until someone comes up with a proper way (not involving signal hacks). -- 2.52.0 _______________________________________________ ffmpeg-devel mailing list -- [email protected] To unsubscribe send an email to [email protected]
