-#if defined(ARCH_X86)
-#if __CPU__ != 386
- __asm("bswap %0":
- "=r" (x) :
-#else
- __asm("xchgb %b0,%h0\n"
- " rorl $16,%0\n"
- " xchgb %b0,%h0":
- LEGACY_REGS (x) :
-#endif
- "0" (x));
-#elif defined(ARCH_SH4)
- __asm__(
- "swap.b %0,%0\n"
- "swap.w %0,%0\n"
- "swap.b %0,%0\n"
- :"=r"(x):"0"(x));
-#elif defined(ARCH_ARM)
- uint32_t t;
- __asm__ (
- "eor %1, %0, %0, ror #16 \n\t"
- "bic %1, %1, #0xFF0000 \n\t"
- "mov %0, %0, ror #8 \n\t"
- "eor %0, %0, %1, lsr #8 \n\t"
- : "+r"(x), "+r"(t));
-#elif defined(ARCH_BFIN)
- unsigned tmp;
- asm("%1 = %0 >> 8 (V);\n\t"
- "%0 = %0 << 8 (V);\n\t"
- "%0 = %0 | %1;\n\t"
- "%0 = PACK(%0.L, %0.H);\n\t"
- : "+d"(x), "=&d"(tmp));
-#else
- x= ((x<<8)&0xFF00FF00) | ((x>>8)&0x00FF00FF);
- x= (x>>16) | (x<<16);
-#endif
- return x;