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

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Test R5900 three-operand MADD.

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 21:23:52 +01:00 committed by Aleksandar Markovic
parent 779bdf417d
commit 50f299da62
2 changed files with 46 additions and 0 deletions
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1
tests/tcg/mips/mipsr5900/Makefile
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@ -10,6 +10,7 @@ CFLAGS = -Wall -mabi=32 -march=r5900 -static
TESTCASES = div1.tst
TESTCASES += divu1.tst
TESTCASES += madd.tst
TESTCASES += mflohi1.tst
TESTCASES += mtlohi1.tst
TESTCASES += mult.tst

45
tests/tcg/mips/mipsr5900/madd.c Normal file
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@ -0,0 +1,45 @@
/*
* Test R5900-specific three-operand MADD.
*/
#include <stdio.h>
#include <inttypes.h>
#include <assert.h>
int64_t madd(int64_t a, int32_t rs, int32_t rt)
{
int32_t lo = a;
int32_t hi = a >> 32;
int32_t rd;
int64_t r;
__asm__ __volatile__ (
" mtlo %5\n"
" mthi %6\n"
" madd %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 = ((int64_t)hi << 32) | (uint32_t)lo;
assert(a + (int64_t)rs * rt == r);
assert(rd == lo);
return r;
}
static void verify_madd(int64_t a, int32_t rs, int32_t rt, int64_t expected)
{
assert(madd(a, rs, rt) == expected);
assert(madd(a, -rs, rt) == a + a - expected);
assert(madd(a, rs, -rt) == a + a - expected);
assert(madd(a, -rs, -rt) == expected);
}
int main()
{
verify_madd(13, 17, 19, 336);
return 0;
}