mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

tests/tcg/mips: Add tests for R5900 three-operand MULTU1

Browse Source 
Add a test for MULTU1.

Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Fredrik Noring <noring@nocrew.org>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
This commit is contained in:
Fredrik Noring 2018-10-21 17:41:32 +02:00 committed by Aleksandar Markovic
parent cb56125eea
commit bec4d66b24
1 changed files with 36 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
tests/tcg/mips/mipsr5900/multu.c
View File

@ -1,5 +1,5 @@
/*
* Test R5900-specific three-operand MULTU.
* Test R5900-specific three-operand MULTU and MULTU1.
*/
#include <stdio.h>
@ -25,15 +25,44 @@ static uint64_t multu(uint32_t rs, uint32_t rt)
return r;
}
static uint64_t multu1(uint32_t rs, uint32_t rt)
{
uint32_t rd, lo, hi;
uint64_t r;
__asm__ __volatile__ (
" multu1 %0, %3, %4\n"
" mflo1 %1\n"
" mfhi1 %2\n"
: "=r" (rd), "=r" (lo), "=r" (hi)
: "r" (rs), "r" (rt));
r = ((uint64_t)hi << 32) | (uint32_t)lo;
assert((uint64_t)rs * rt == r);
assert(rd == lo);
return r;
}
static uint64_t multu_variants(uint32_t rs, uint32_t rt)
{
uint64_t rd = multu(rs, rt);
uint64_t rd1 = multu1(rs, rt);
assert(rd == rd1);
return rd;
}
int main()
{
assert(multu(17, 19) == 323);
assert(multu(77773, 99991) == 7776600043);
assert(multu(12207031, 305175781) == 3725290219116211);
assert(multu_variants(17, 19) == 323);
assert(multu_variants(77773, 99991) == 7776600043);
assert(multu_variants(12207031, 305175781) == 3725290219116211);
assert(multu(0x80000000U, 0x7FFFFFFF) == 0x3FFFFFFF80000000);
assert(multu(0x80000000U, 0x80000000U) == 0x4000000000000000);
assert(multu(0xFFFFFFFFU, 0xFFFFFFFFU) == 0xFFFFFFFE00000001U);
assert(multu_variants(0x80000000U, 0x7FFFFFFF) == 0x3FFFFFFF80000000);
assert(multu_variants(0x80000000U, 0x80000000U) == 0x4000000000000000);
assert(multu_variants(0xFFFFFFFFU, 0xFFFFFFFFU) == 0xFFFFFFFE00000001U);
return 0;
}