ping.
On 2024-10-20 3:44 a.m., Brad Smith wrote:
libavutil/ppc: Include the hardware feature flags like the other archs
Also include the hardware feature flags like the other archs do and
clean up the code a bit.
Tested on Linux POWER8.
Signed-off-by: Brad Smith <b...@comstyle.com>
---
libavutil/ppc/cpu.c | 35 +++++++++++++++++------------------
1 file changed, 17 insertions(+), 18 deletions(-)
diff --git a/libavutil/ppc/cpu.c b/libavutil/ppc/cpu.c
index 9381272175..62d495ec1d 100644
--- a/libavutil/ppc/cpu.c
+++ b/libavutil/ppc/cpu.c
@@ -46,6 +46,17 @@
#include "libavutil/cpu.h"
#include "libavutil/cpu_internal.h"
+#ifndef AT_HWCAP
+#define AT_HWCAP 16
+#endif
+#ifndef AT_HWCAP2
+#define AT_HWCAP2 26
+#endif
+
+#define HWCAP_PPC_VSX (1 << 7)
+#define HWCAP_PPC_ALTIVEC (1 << 28)
+#define HWCAP2_PPC_ARCH_2_07 (1 << 31)
+
/**
* This function MAY rely on signal() or fork() in order to make sure AltiVec
* is present.
@@ -65,20 +76,14 @@ int ff_get_cpu_flags_ppc(void)
int flags = 0;
unsigned long hwcap = ff_getauxval(AT_HWCAP);
-#ifdef PPC_FEATURE2_ARCH_2_07
unsigned long hwcap2 = ff_getauxval(AT_HWCAP2);
-#endif
- if (hwcap & PPC_FEATURE_HAS_ALTIVEC)
+ if (hwcap & HWCAP_PPC_ALTIVEC)
flags |= AV_CPU_FLAG_ALTIVEC;
-#ifdef PPC_FEATURE_HAS_VSX
- if (hwcap & PPC_FEATURE_HAS_VSX)
+ if (hwcap & HWCAP_PPC_VSX)
flags |= AV_CPU_FLAG_VSX;
-#endif
-#ifdef PPC_FEATURE2_ARCH_2_07
- if (hwcap2 & PPC_FEATURE2_ARCH_2_07)
+ if (hwcap2 & HWCAP2_PPC_ARCH_2_07)
flags |= AV_CPU_FLAG_POWER8;
-#endif
return flags;
#elif defined(__APPLE__) || defined(__NetBSD__) || defined(__OpenBSD__)
@@ -112,23 +117,17 @@ int ff_get_cpu_flags_ppc(void)
if (buf[i] == AT_NULL)
goto out;
if (buf[i] == AT_HWCAP) {
- if (buf[i + 1] & PPC_FEATURE_HAS_ALTIVEC)
+ if (buf[i + 1] & HWCAP_PPC_ALTIVEC)
ret = AV_CPU_FLAG_ALTIVEC;
-#ifdef PPC_FEATURE_HAS_VSX
- if (buf[i + 1] & PPC_FEATURE_HAS_VSX)
+ if (buf[i + 1] & HWCAP_PPC_VSX)
ret |= AV_CPU_FLAG_VSX;
-#endif
if (ret & AV_CPU_FLAG_VSX)
av_assert0(ret & AV_CPU_FLAG_ALTIVEC);
}
-#ifdef AT_HWCAP2 /* not introduced until glibc 2.18 */
else if (buf[i] == AT_HWCAP2) {
-#ifdef PPC_FEATURE2_ARCH_2_07
- if (buf[i + 1] & PPC_FEATURE2_ARCH_2_07)
+ if (buf[i + 1] & HWCAP2_PPC_ARCH_2_07)
ret |= AV_CPU_FLAG_POWER8;
-#endif
}
-#endif /* AT_HWCAP2 */
}
}
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
