下面是几个linux环境的内嵌汇编,小弟没有这方面经验,请高手帮我翻译成ADS,realview环境下的相应内嵌汇编.先谢过高手们
# define mad_f_mul(x, y)
({ mad_fixed64hi_t __hi;
mad_fixed64lo_t __lo;
mad_fixed_t __result;
asm ("smull %0, %1, %3, %4
"
"movs %0, %0, lsr %5
"
"adc %2, %0, %1, lsl %6"
: "=&r" (__lo), "=&r" (__hi), "=r" (__result)
: "%r" (x), "r" (y),
"M" (MAD_F_SCALEBITS), "M" (32 - MAD_F_SCALEBITS)
: "cc");
__result;
})
#define MAD_F_MLX(hi, lo, x, y)
asm ("smull %0, %1, %2, %3"
: "=&r" (lo), "=&r" (hi)
: "%r" (x), "r" (y))
#define MAD_F_MLA(hi, lo, x, y)
asm ("smlal %0, %1, %2, %3"
: "+r" (lo), "+r" (hi)
: "%r" (x), "r" (y))
#define MAD_F_MLN(hi, lo)
asm ("rsbs %0, %2, #0
"
"rsc %1, %3, #0"
: "=r" (lo), "=r" (hi)
: "0" (lo), "1" (hi)
: "cc")
#define mad_f_scale64(hi, lo)
({ mad_fixed_t __result;
asm ("movs %0, %1, lsr %3
"
"adc %0, %0, %2, lsl %4"
: "=&r" (__result)
: "r" (lo), "r" (hi),
"M" (MAD_F_SCALEBITS), "M" (32 - MAD_F_SCALEBITS)
: "cc");
__result;
}) |
楼主
标题置顶
标题高亮
