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Code Issues Releases Activity

cosmetics: sanitise asm() statements in bswap.h

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Originally committed as revision 12494 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2008-03-18 20:52:37 +00:00
parent 956330452b
commit 70fa2e27ec
1 changed files with 17 additions and 21 deletions
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38
libavutil/bswap.h
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@ -43,11 +43,9 @@
static av_always_inline uint16_t bswap_16(uint16_t x) static av_always_inline uint16_t bswap_16(uint16_t x)
{ {
#if defined(ARCH_X86) #if defined(ARCH_X86)
__asm("rorw $8, %0" : asm("rorw $8, %0" : LEGACY_REGS (x) : "0" (x));
LEGACY_REGS (x) :
"0" (x));
#elif defined(ARCH_SH4) #elif defined(ARCH_SH4)
__asm__("swap.b %0,%0":"=r"(x):"0"(x)); asm("swap.b %0,%0" : "=r"(x) : "0"(x));
#else #else
x= (x>>8) | (x<<8); x= (x>>8) | (x<<8);
#endif #endif
@ -58,27 +56,27 @@ static av_always_inline uint32_t bswap_32(uint32_t x)
{ {
#if defined(ARCH_X86) #if defined(ARCH_X86)
#ifdef HAVE_BSWAP #ifdef HAVE_BSWAP
__asm("bswap %0": asm("bswap %0":
"=r" (x) : "=r" (x) :
#else #else
__asm("xchgb %b0,%h0\n" asm("xchgb %b0,%h0\n"
"rorl $16,%0 \n" "rorl $16,%0 \n"
"xchgb %b0,%h0": "xchgb %b0,%h0":
LEGACY_REGS (x) : LEGACY_REGS (x) :
#endif #endif
"0" (x)); "0" (x));
#elif defined(ARCH_SH4) #elif defined(ARCH_SH4)
__asm__("swap.b %0,%0\n" asm("swap.b %0,%0\n"
"swap.w %0,%0\n" "swap.w %0,%0\n"
"swap.b %0,%0\n" "swap.b %0,%0\n"
:"=r"(x):"0"(x)); : "=r"(x) : "0"(x));
#elif defined(ARCH_ARM) #elif defined(ARCH_ARM)
uint32_t t; uint32_t t;
__asm__ ("eor %1, %0, %0, ror #16 \n\t" asm ("eor %1, %0, %0, ror #16 \n\t"
"bic %1, %1, #0xFF0000 \n\t" "bic %1, %1, #0xFF0000 \n\t"
"mov %0, %0, ror #8 \n\t" "mov %0, %0, ror #8 \n\t"
"eor %0, %0, %1, lsr #8 \n\t" "eor %0, %0, %1, lsr #8 \n\t"
: "+r"(x), "+r"(t)); : "+r"(x), "+r"(t));
#elif defined(ARCH_BFIN) #elif defined(ARCH_BFIN)
unsigned tmp; unsigned tmp;
asm("%1 = %0 >> 8 (V); \n\t" asm("%1 = %0 >> 8 (V); \n\t"
@ -100,9 +98,7 @@ static inline uint64_t bswap_64(uint64_t x)
x= ((x<<16)&0xFFFF0000FFFF0000ULL) | ((x>>16)&0x0000FFFF0000FFFFULL); x= ((x<<16)&0xFFFF0000FFFF0000ULL) | ((x>>16)&0x0000FFFF0000FFFFULL);
return (x>>32) | (x<<32); return (x>>32) | (x<<32);
#elif defined(ARCH_X86_64) #elif defined(ARCH_X86_64)
__asm("bswap %0": asm("bswap %0": "=r" (x) : "0" (x));
"=r" (x) :
"0" (x));
return x; return x;
#else #else
union { union {