38 lines
726 B
C
38 lines
726 B
C
|
/*
|
||
|
|
* Test R5900-specific three-operand MADDU.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <inttypes.h>
|
||
|
|
#include <assert.h>
|
||
|
|
|
||
|
|
uint64_t maddu(uint64_t a, uint32_t rs, uint32_t rt)
|
||
|
|
{
|
||
|
|
uint32_t lo = a;
|
||
|
|
uint32_t hi = a >> 32;
|
||
|
|
uint32_t rd;
|
||
|
|
uint64_t r;
|
||
|
|
|
||
|
|
__asm__ __volatile__ (
|
||
|
|
" mtlo %5\n"
|
||
|
|
" mthi %6\n"
|
||
|
|
" maddu %0, %3, %4\n"
|
||
|
|
" mflo %1\n"
|
||
|
|
" mfhi %2\n"
|
||
|
|
: "=r" (rd), "=r" (lo), "=r" (hi)
|
||
|
|
: "r" (rs), "r" (rt), "r" (lo), "r" (hi));
|
||
|
|
r = ((uint64_t)hi << 32) | (uint32_t)lo;
|
||
|
|
|
||
|
|
assert(a + (uint64_t)rs * rt == r);
|
||
|
|
assert(rd == lo);
|
||
|
|
|
||
|
|
return r;
|
||
|
|
}
|
||
|
|
|
||
|
|
int main()
|
||
|
|
{
|
||
|
|
assert(maddu(13, 17, 19) == 336);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|