diff options
| author | Falk Hüffner <mellum@users.sourceforge.net> | 2005-06-20 01:46:14 +0400 |
|---|---|---|
| committer | Falk Hüffner <mellum@users.sourceforge.net> | 2005-06-20 01:46:14 +0400 |
| commit | 2fdf9cb2fb9f2f9c1bec53a5a72287bbf12471b7 (patch) | |
| tree | 0f14bf7f11413f5ab16995cbed69e05262b59c03 /libavcodec/alpha/asm.h | |
| parent | 1a2f54912621a54e9678e4693275c0505210e101 (diff) | |
Communicate proper aliasing to gcc (needed for 4.1).
Originally committed as revision 4384 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/alpha/asm.h')
| -rw-r--r-- | libavcodec/alpha/asm.h | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/libavcodec/alpha/asm.h b/libavcodec/alpha/asm.h index 21a737d3f3..6dc997b37e 100644 --- a/libavcodec/alpha/asm.h +++ b/libavcodec/alpha/asm.h @@ -56,13 +56,33 @@ static inline uint64_t WORD_VEC(uint64_t x) return x; } -#define ldq(p) (*(const uint64_t *) (p)) -#define ldl(p) (*(const int32_t *) (p)) -#define stl(l, p) do { *(uint32_t *) (p) = (l); } while (0) -#define stq(l, p) do { *(uint64_t *) (p) = (l); } while (0) #define sextw(x) ((int16_t) (x)) #ifdef __GNUC__ +#define ldq(p) \ + (((union { \ + uint64_t __l; \ + __typeof__(*(p)) __s[sizeof (uint64_t) / sizeof *(p)]; \ + } *) (p))->__l) +#define ldl(p) \ + (((union { \ + int32_t __l; \ + __typeof__(*(p)) __s[sizeof (int32_t) / sizeof *(p)]; \ + } *) (p))->__l) +#define stq(l, p) \ + do { \ + (((union { \ + uint64_t __l; \ + __typeof__(*(p)) __s[sizeof (uint64_t) / sizeof *(p)]; \ + } *) (p))->__l) = l; \ + } while (0) +#define stl(l, p) \ + do { \ + (((union { \ + int32_t __l; \ + __typeof__(*(p)) __s[sizeof (int32_t) / sizeof *(p)]; \ + } *) (p))->__l) = l; \ + } while (0) struct unaligned_long { uint64_t l; } __attribute__((packed)); #define ldq_u(p) (*(const uint64_t *) (((uint64_t) (p)) & ~7ul)) #define uldq(a) (((const struct unaligned_long *) (a))->l) @@ -132,6 +152,10 @@ struct unaligned_long { uint64_t l; } __attribute__((packed)); #elif defined(__DECC) /* Digital/Compaq/hp "ccc" compiler */ #include <c_asm.h> +#define ldq(p) (*(const uint64_t *) (p)) +#define ldl(p) (*(const int32_t *) (p)) +#define stq(l, p) do { *(uint64_t *) (p) = (l); } while (0) +#define stl(l, p) do { *(int32_t *) (p) = (l); } while (0) #define ldq_u(a) asm ("ldq_u %v0,0(%a0)", a) #define uldq(a) (*(const __unaligned uint64_t *) (a)) #define cmpbge(a, b) asm ("cmpbge %a0,%a1,%v0", a, b) |