URL
https://opencores.org/ocsvn/eco32/eco32/trunk
Subversion Repositories eco32
Compare Revisions
- This comparison shows the changes necessary to convert path
/eco32/tags/eco32-0.22/hwtests/remtest
- from Rev 14 to Rev 21
- ↔ Reverse comparison
Rev 14 → Rev 21
/mkremtest.c
0,0 → 1,137
/* |
* mkremtest.c -- generate remainder test program |
*/ |
|
|
#include <stdio.h> |
#include <stdlib.h> |
#include <string.h> |
|
|
unsigned myrem(unsigned x, unsigned y) { |
return (unsigned) ((signed) x % (signed) y); |
} |
|
|
unsigned myremu(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[] = { |
{ "rem", myrem }, |
{ "remu", myremu }, |
}; |
|
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,$0,'.'\n"); |
for (i = 0; i < snums; i++) { |
for (j = 0; j < snums; j++) { |
if (nums[j] == 0) { |
continue; |
} |
for (k = 0; k < sops; k++) { |
if (nums[i] == 0x80000000 && nums[j] == 0xFFFFFFFF && k == 0) { |
continue; |
} |
res = ops[k].func(nums[i], nums[j]); |
chooseRegs(&r1, &r2, &r3, &r4); |
lbl = newLabel(); |
printf("\tadd\t$%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; |
} |
/Makefile
0,0 → 1,33
# |
# Makefile for remtest ROM |
# |
|
BUILD = ../../build |
|
.PHONY: all install run clean |
|
all: remtest.exo |
|
install: remtest.exo |
|
remtest.exo: remtest.bin |
$(BUILD)/bin/bin2exo 0 remtest.bin remtest.exo |
|
remtest.bin: remtest.o |
$(BUILD)/bin/ld -h -rc 0xE0000000 -o remtest.bin remtest.o |
|
remtest.o: remtest.s |
$(BUILD)/bin/as -o remtest.o remtest.s |
|
remtest.s: mkremtest |
./mkremtest > remtest.s |
|
mkremtest: mkremtest.c |
gcc -m32 -g -Wall -o mkremtest mkremtest.c |
|
run: remtest.bin |
$(BUILD)/bin/sim -i -t 1 -r remtest.bin |
|
clean: |
rm -f *~ mkremtest remtest.s remtest.o |
rm -f remtest.bin remtest.exo |