Commit 35eb9be6 authored by Fredrik Noring's avatar Fredrik Noring Committed by Aleksandar Markovic
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tests/tcg/mips: Add tests for R5900 DIVU1 



Add a test for DIVU1.

Reviewed-by: default avatarAleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: default avatarFredrik Noring <noring@nocrew.org>
Signed-off-by: default avatarAleksandar Markovic <amarkovic@wavecomp.com>
parent 990aa328

tests/tcg/mips/mipsr5900/Makefile

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@@ -9,6 +9,7 @@ CC = $(CROSS)gcc 
CFLAGS  = -Wall -mabi=32 -march=r5900 -static



TESTCASES = div1.tst

TESTCASES += divu1.tst

TESTCASES += mflohi1.tst

TESTCASES += mtlohi1.tst

TESTCASES += mult.tst

tests/tcg/mips/mipsr5900/divu1.c

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/*

 * Test R5900-specific DIVU1.

 */



#include <stdio.h>

#include <inttypes.h>

#include <assert.h>



struct quotient_remainder { uint32_t quotient, remainder; };



static struct quotient_remainder divu1(uint32_t rs, uint32_t rt)

{

    uint32_t lo, hi;



    __asm__ __volatile__ (

            "    divu1 $0, %2, %3\n"

            "    mflo1 %0\n"

            "    mfhi1 %1\n"

            : "=r" (lo), "=r" (hi)

            : "r" (rs), "r" (rt));



    assert(rs / rt == lo);

    assert(rs % rt == hi);



    return (struct quotient_remainder) { .quotient = lo, .remainder = hi };

}



static void verify_divu1(uint32_t rs, uint32_t rt,

                         uint32_t expected_quotient,

                         uint32_t expected_remainder)

{

    struct quotient_remainder qr = divu1(rs, rt);



    assert(qr.quotient == expected_quotient);

    assert(qr.remainder == expected_remainder);

}



int main()

{

    verify_divu1(0, 1, 0, 0);

    verify_divu1(1, 1, 1, 0);

    verify_divu1(1, 2, 0, 1);

    verify_divu1(17, 19, 0, 17);

    verify_divu1(19, 17, 1, 2);

    verify_divu1(77773, 101, 770, 3);



    return 0;

}