|  | #include<stdio.h> | 
|  | #include<assert.h> | 
|  |  | 
|  | int main() | 
|  | { | 
|  | int rd, rt, dsp; | 
|  | int result, resultdsp; | 
|  |  | 
|  | rt        = 0x12345678; | 
|  | result    = 0xA000C000; | 
|  | resultdsp = 1; | 
|  |  | 
|  | __asm | 
|  | ("wrdsp $0\n\t" | 
|  | "shll.ph %0, %2, 0x0B\n\t" | 
|  | "rddsp %1\n\t" | 
|  | : "=r"(rd), "=r"(dsp) | 
|  | : "r"(rt) | 
|  | ); | 
|  | dsp = (dsp >> 22) & 0x01; | 
|  | assert(dsp == resultdsp); | 
|  | assert(rd  == result); | 
|  |  | 
|  | rt        = 0x7fff8000; | 
|  | result    = 0xfffe0000; | 
|  | resultdsp = 1; | 
|  |  | 
|  | __asm | 
|  | ("wrdsp $0\n\t" | 
|  | "shll.ph %0, %2, 0x01\n\t" | 
|  | "rddsp %1\n\t" | 
|  | : "=r"(rd), "=r"(dsp) | 
|  | : "r"(rt) | 
|  | ); | 
|  | dsp = (dsp >> 22) & 0x01; | 
|  | assert(dsp == resultdsp); | 
|  | assert(rd  == result); | 
|  |  | 
|  | rt        = 0x00000001; | 
|  | result    = 0x00008000; | 
|  | resultdsp = 1; | 
|  |  | 
|  | __asm | 
|  | ("wrdsp $0\n\t" | 
|  | "shll.ph %0, %2, 0x0F\n\t" | 
|  | "rddsp %1\n\t" | 
|  | : "=r"(rd), "=r"(dsp) | 
|  | : "r"(rt) | 
|  | ); | 
|  | dsp = (dsp >> 22) & 0x01; | 
|  | assert(dsp == resultdsp); | 
|  | assert(rd  == result); | 
|  |  | 
|  | return 0; | 
|  | } |