Originally committed as revision 12496 to svn://svn.ffmpeg.org/ffmpeg/trunk
#include <byteswap.h>
#else
-#ifdef ARCH_X86_64
-# define LEGACY_REGS "=Q"
-#else
-# define LEGACY_REGS "=q"
-#endif
-
static av_always_inline uint16_t bswap_16(uint16_t x)
{
#if defined(ARCH_X86)
- asm("rorw $8, %0" : LEGACY_REGS (x) : "0" (x));
+ asm("rorw $8, %0" : "+r"(x));
#elif defined(ARCH_SH4)
asm("swap.b %0,%0" : "=r"(x) : "0"(x));
#else
{
#if defined(ARCH_X86)
#ifdef HAVE_BSWAP
- asm("bswap %0":
- "=r" (x) :
+ asm("bswap %0" : "+r" (x));
#else
- asm("xchgb %b0,%h0\n"
- "rorl $16,%0 \n"
- "xchgb %b0,%h0":
- LEGACY_REGS (x) :
+ asm("rorw $8, %w0 \n\t"
+ "rorl $16, %0 \n\t"
+ "rorw $8, %w0"
+ : "+r"(x));
#endif
- "0" (x));
#elif defined(ARCH_SH4)
asm("swap.b %0,%0\n"
"swap.w %0,%0\n"