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ARM: simplify inline asm with 64-bit operands

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Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Mans Rullgard
2011-05-30 16:37:06 +01:00
parent 371266daa3
commit 6bb70dfd74
2 changed files with 13 additions and 17 deletions
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libavutil/arm/intreadwrite.h
+8 -9
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@@ -55,22 +55,21 @@ static av_always_inline void AV_WN32(void *p, uint32_t v)
#define AV_RN64 AV_RN64
static av_always_inline uint64_t AV_RN64(const void *p)
{
union { uint64_t v; uint32_t hl[2]; } v;
__asm__ ("ldr %0, %2 \n\t"
"ldr %1, %3 \n\t"
: "=&r"(v.hl[0]), "=r"(v.hl[1])
uint64_t v;
__asm__ ("ldr %Q0, %1 \n\t"
"ldr %R0, %2 \n\t"
: "=&r"(v)
: "m"(*(const uint32_t*)p), "m"(*((const uint32_t*)p+1)));
return v.v;
return v;
}
#define AV_WN64 AV_WN64
static av_always_inline void AV_WN64(void *p, uint64_t v)
{
union { uint64_t v; uint32_t hl[2]; } vv = { v };
__asm__ ("str %2, %0 \n\t"
"str %3, %1 \n\t"
__asm__ ("str %Q2, %0 \n\t"
"str %R2, %1 \n\t"
: "=m"(*(uint32_t*)p), "=m"(*((uint32_t*)p+1))
: "r"(vv.hl[0]), "r"(vv.hl[1]));
: "r"(v));
}
#endif /* HAVE_INLINE_ASM */