[FFmpeg-cvslog] ppc: cpu: Add support for VSX and POWER8 extensions
Luca Barbato
git at videolan.org
Sun May 31 22:58:30 CEST 2015
ffmpeg | branch: master | Luca Barbato <lu_zero at gentoo.org> | Sun May 10 04:15:59 2015 +0200| [7d07ee5a9bd170a06d26fd967cf8de5d3b1ce331] | committer: Luca Barbato
ppc: cpu: Add support for VSX and POWER8 extensions
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7d07ee5a9bd170a06d26fd967cf8de5d3b1ce331
---
libavutil/cpu.h | 2 ++
libavutil/ppc/cpu.c | 20 +++++++++++++++++---
libavutil/ppc/cpu.h | 2 ++
3 files changed, 21 insertions(+), 3 deletions(-)
diff --git a/libavutil/cpu.h b/libavutil/cpu.h
index 7cecccc..d7fdf26 100644
--- a/libavutil/cpu.h
+++ b/libavutil/cpu.h
@@ -54,6 +54,8 @@
#define AV_CPU_FLAG_BMI2 0x40000 ///< Bit Manipulation Instruction Set 2
#define AV_CPU_FLAG_ALTIVEC 0x0001 ///< standard
+#define AV_CPU_FLAG_VSX 0x0002 ///< ISA 2.06
+#define AV_CPU_FLAG_POWER8 0x0004 ///< ISA 2.07
#define AV_CPU_FLAG_ARMV5TE (1 << 0)
#define AV_CPU_FLAG_ARMV6 (1 << 1)
diff --git a/libavutil/ppc/cpu.c b/libavutil/ppc/cpu.c
index 27a2853..2981856 100644
--- a/libavutil/ppc/cpu.c
+++ b/libavutil/ppc/cpu.c
@@ -85,6 +85,14 @@ int ff_get_cpu_flags_ppc(void)
if (buf[i] == AT_HWCAP) {
if (buf[i + 1] & PPC_FEATURE_HAS_ALTIVEC)
ret = AV_CPU_FLAG_ALTIVEC;
+#ifdef PPC_FEATURE_HAS_VSX
+ if (buf[i + 1] & PPC_FEATURE_HAS_VSX)
+ ret |= AV_CPU_FLAG_VSX;
+#endif
+#ifdef PPC_FEATURE_ARCH_2_07
+ if (buf[i + 1] & PPC_FEATURE_HAS_POWER8)
+ ret |= AV_CPU_FLAG_POWER8;
+#endif
goto out;
}
}
@@ -103,7 +111,7 @@ out:
#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));
@@ -118,8 +126,14 @@ out:
proc_ver == PVR_POWER7 ||
proc_ver == PVR_POWER8 ||
proc_ver == PVR_CELL_PPU)
- return AV_CPU_FLAG_ALTIVEC;
- return 0;
+ 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).
diff --git a/libavutil/ppc/cpu.h b/libavutil/ppc/cpu.h
index f8fae58..a8b823f 100644
--- a/libavutil/ppc/cpu.h
+++ b/libavutil/ppc/cpu.h
@@ -24,5 +24,7 @@
#include "libavutil/cpu_internal.h"
#define PPC_ALTIVEC(flags) CPUEXT(flags, ALTIVEC)
+#define PPC_VSX(flags) CPUEXT(flags, VSX)
+#define PPC_POWER8(flags) CPUEXT(flags, POWER8)
#endif /* AVUTIL_PPC_CPU_H */
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