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Subversion Repositories eco32

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  • This comparison shows the changes necessary to convert path 
    /eco32/tags/eco32-0.26/hwtests/multest
    from Rev 256 to Rev 270
    ↔ Reverse comparison
  •

Rev 256 → Rev 270

/Makefile
0,0 → 1,33
#
# Makefile for multest ROM
#
 
BUILD = ../../build
 
.PHONY: all install run clean
 
all: multest.exo
 
install: multest.exo
 
multest.exo: multest.bin
$(BUILD)/bin/bin2exo -S2 0 multest.bin multest.exo
 
multest.bin: multest.o
$(BUILD)/bin/ld -h -rc 0xE0000000 -o multest.bin multest.o
 
multest.o: multest.s
$(BUILD)/bin/as -o multest.o multest.s
 
multest.s: mkmultest
./mkmultest > multest.s
 
mkmultest: mkmultest.c
gcc -g -Wall -o mkmultest mkmultest.c
 
run: multest.bin
$(BUILD)/bin/sim -i -s 1 -t 0 -r multest.bin
 
clean:
rm -f *~ mkmultest multest.s multest.o
rm -f multest.bin multest.exo
/README
0,0 → 1,2
This is a test for multiply instructions. A dot ('.') is sent on serial
line 0 to indicate success, a question mark ('?') for failure.
/mkmultest.c
0,0 → 1,131
/*
* mkmultest.c -- generate multiply test program
*/
 
 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
 
 
unsigned mul(unsigned x, unsigned y) {
return (unsigned) ((signed) x * (signed) y);
}
 
 
unsigned mulu(unsigned x, unsigned y) {
return x * y;
}
 
 
unsigned nums[] = {
0x00000000,
0x00000001,
0x00000002,
0x00000003,
0x0000FFFC,
0x0000FFFD,
0x0000FFFE,
0x0000FFFF,
0x00010000,
0x00010001,
0x00010002,
0x00010003,
0x7FFFFFFC,
0x7FFFFFFD,
0x7FFFFFFE,
0x7FFFFFFF,
0x80000000,
0x80000001,
0x80000002,
0x80000003,
0x8000FFFC,
0x8000FFFD,
0x8000FFFE,
0x8000FFFF,
0x80010000,
0x80010001,
0x80010002,
0x80010003,
0xFFFFFFFC,
0xFFFFFFFD,
0xFFFFFFFE,
0xFFFFFFFF,
};
 
int snums = sizeof(nums) / sizeof(nums[0]);
 
 
struct {
char *name;
unsigned (*func)(unsigned x, unsigned y);
} ops[] = {
{ "mul", mul },
{ "mulu", mulu },
};
 
int sops = sizeof(ops) / sizeof(ops[0]);
 
 
int chooseReg(void) {
int r;
 
r = (rand() >> 8) % 16;
return r + 8;
}
 
 
void chooseRegs(int *r1, int *r2, int *r3, int *r4) {
*r1 = chooseReg();
do {
*r2 = chooseReg();
} while (*r2 == *r1);
do {
*r3 = chooseReg();
} while (*r3 == *r2 || *r3 == *r1);
do {
*r4 = chooseReg();
} while (*r4 == *r3 || *r4 == *r2 || *r4 == *r1);
}
 
 
int newLabel(void) {
static int lbl = 1000;
return lbl++;
}
 
 
int main(void) {
int i, j, k;
unsigned res;
int r1, r2, r3, r4;
int lbl;
 
printf("\tadd\t$7,$0,'.'\n");
for (i = 0; i < snums; i++) {
for (j = 0; j < snums; j++) {
for (k = 0; k < sops; k++) {
res = ops[k].func(nums[i], nums[j]);
chooseRegs(&r1, &r2, &r3, &r4);
lbl = newLabel();
printf("\tadd\t$%d,$0,0x%08X\n", r1, nums[i]);
printf("\tadd\t$%d,$0,0x%08X\n", r2, nums[j]);
printf("\t%s\t$%d,$%d,$%d\n", ops[k].name, r3, r1, r2);
printf("\tadd\t$%d,$0,0x%08X\n", r4, res);
printf("\tbeq\t$%d,$%d,L%d\n", r3, r4, lbl);
printf("\tadd\t$7,$0,'?'\n");
printf("L%d:\n", lbl);
}
}
}
printf("out:\n");
printf("\tadd\t$6,$0,0xF0300000\n");
printf("out1:\n");
printf("\tldw\t$5,$6,8\n");
printf("\tand\t$5,$5,1\n");
printf("\tbeq\t$5,$0,out1\n");
printf("\tstw\t$7,$6,12\n");
printf("halt:\n");
printf("\tj\thalt\n");
return 0;
}

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