#include<stdio.h> #include<assert.h> int main() { int rd, rs, rt, dsp; int result, resultdsp; rs = 0x03FB1234; rt = 0x0BCC4321; result = 0xF504F4B4; resultdsp = 1; __asm ("mul.ph %0, %2, %3\n\t" "rddsp %1\n\t" : "=r"(rd), "=r"(dsp) : "r"(rs), "r"(rt) ); dsp = (dsp >> 21) & 0x01; assert(rd == result); assert(dsp == resultdsp); dsp = 0; __asm ("wrdsp %0\n\t" : : "r"(dsp) ); rs = 0x00210010; rt = 0x00110005; result = 0x2310050; resultdsp = 0; __asm ("mul.ph %0, %2, %3\n\t" "rddsp %1\n\t" : "=r"(rd), "=r"(dsp) : "r"(rs), "r"(rt) ); dsp = (dsp >> 21) & 0x01; assert(rd == result); assert(dsp == resultdsp); return 0; }