[FFmpeg-cvslog] ppc: cpu: Add support for VSX and POWER8 extensions

[Luca Barbato]

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 */