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| author | Mans Rullgard <mans@mansr.com> | 2012-08-07 17:43:29 +0100 |
|---|---|---|
| committer | Mans Rullgard <mans@mansr.com> | 2012-08-07 21:13:30 +0100 |
| commit | ec9d2c15c17ada4ebb5c8ca335a71a1f330dcaf9 (patch) | |
| tree | 1ba65f9a25e479e3fa389cd09c3b3340fd2dde96 | |
| parent | 4ab26cb4cc9af2ab2199105aa273aa23e1f27911 (diff) | |
| download | ffmpeg-ec9d2c15c17ada4ebb5c8ca335a71a1f330dcaf9.tar.gz | |
ARM: use Q/R inline asm operand modifiers only if supported
Some compilers do not support the Q/R modifiers used to access
the low/high parts of a 64-bit register pair. Check for this
and disable all uses of it when not supported.
Fixes bug #337.
Signed-off-by: Mans Rullgard <mans@mansr.com>
| -rwxr-xr-x | configure | 2 | ||||
| -rw-r--r-- | libavutil/arm/intmath.h | 4 | ||||
| -rw-r--r-- | libavutil/arm/intreadwrite.h | 4 |
3 files changed, 10 insertions, 0 deletions
@@ -1077,6 +1077,7 @@ HAVE_LIST=" alsa_asoundlib_h altivec_h arpa_inet_h + asm_mod_q asm_mod_y attribute_may_alias attribute_packed @@ -2792,6 +2793,7 @@ EOF enabled neon && check_asm neon '"vadd.i16 q0, q0, q0"' enabled vfpv3 && check_asm vfpv3 '"vmov.f32 s0, #1.0"' + check_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)' check_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)' enabled_all armv6t2 shared !pic && enable_pic diff --git a/libavutil/arm/intmath.h b/libavutil/arm/intmath.h index b6a45c1395..fa31ecf6a5 100644 --- a/libavutil/arm/intmath.h +++ b/libavutil/arm/intmath.h @@ -97,6 +97,8 @@ static av_always_inline av_const int FASTDIV(int a, int b) #endif /* HAVE_ARMV6 */ +#if HAVE_ASM_MOD_Q + #define av_clipl_int32 av_clipl_int32_arm static av_always_inline av_const int32_t av_clipl_int32_arm(int64_t a) { @@ -110,6 +112,8 @@ static av_always_inline av_const int32_t av_clipl_int32_arm(int64_t a) return x; } +#endif /* HAVE_ASM_MOD_Q */ + #endif /* HAVE_INLINE_ASM */ #endif /* AVUTIL_ARM_INTMATH_H */ diff --git a/libavutil/arm/intreadwrite.h b/libavutil/arm/intreadwrite.h index ed53330e39..6eff7332fb 100644 --- a/libavutil/arm/intreadwrite.h +++ b/libavutil/arm/intreadwrite.h @@ -61,6 +61,8 @@ static av_always_inline void AV_WN32(void *p, uint32_t v) __asm__ ("str %1, %0" : "=m"(*(uint32_t *)p) : "r"(v)); } +#if HAVE_ASM_MOD_Q + #define AV_RN64 AV_RN64 static av_always_inline uint64_t AV_RN64(const void *p) { @@ -82,6 +84,8 @@ static av_always_inline void AV_WN64(void *p, uint64_t v) : "r"(v)); } +#endif /* HAVE_ASM_MOD_Q */ + #endif /* HAVE_INLINE_ASM */ #endif /* AVUTIL_ARM_INTREADWRITE_H */ |