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tests/tcg: mips: Test R5900 three-operand MADDU1

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Test R5900 three-operand MADDU1.

Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Fredrik Noring <noring@nocrew.org>
This commit is contained in:
Fredrik Noring 2018-12-27 21:25:41 +01:00 committed by Aleksandar Markovic
parent 8e2e5e7dac
commit 19749a21d7
1 changed files with 35 additions and 2 deletions
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37
tests/tcg/mips/mipsr5900/maddu.c
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@ -1,5 +1,5 @@
/*
* Test R5900-specific three-operand MADDU.
* Test R5900-specific three-operand MADDU and MADDU1.
*/
#include <stdio.h>
@ -29,9 +29,42 @@ uint64_t maddu(uint64_t a, uint32_t rs, uint32_t rt)
return r;
}
uint64_t maddu1(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__ (
" mtlo1 %5\n"
" mthi1 %6\n"
" maddu1 %0, %3, %4\n"
" mflo1 %1\n"
" mfhi1 %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;
}
static int64_t maddu_variants(int64_t a, int32_t rs, int32_t rt)
{
int64_t rd = maddu(a, rs, rt);
int64_t rd1 = maddu1(a, rs, rt);
assert(rd == rd1);
return rd;
}
int main()
{
assert(maddu(13, 17, 19) == 336);
assert(maddu_variants(13, 17, 19) == 336);
return 0;
}