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[/] [eco32/] [trunk/] [hwtests/] [brtest/] [mkbrtest.c] - Rev 66
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/* * mkbrtest.c -- generate branch test program */ #include <stdio.h> #include <stdlib.h> #include <string.h> typedef int Bool; Bool eq(unsigned x, unsigned y) { return x == y; } Bool ne(unsigned x, unsigned y) { return x != y; } Bool gt(unsigned x, unsigned y) { return (signed) x > (signed) y; } Bool ge(unsigned x, unsigned y) { return (signed) x >= (signed) y; } Bool lt(unsigned x, unsigned y) { return (signed) x < (signed) y; } Bool le(unsigned x, unsigned y) { return (signed) x <= (signed) y; } Bool gtu(unsigned x, unsigned y) { return x > y; } Bool geu(unsigned x, unsigned y) { return x >= y; } Bool ltu(unsigned x, unsigned y) { return x < y; } Bool leu(unsigned x, unsigned y) { return x <= y; } unsigned nums[] = { 0x00000000, 0x00000001, 0x00000002, 0x00000003, 0x7FFFFFFC, 0x7FFFFFFD, 0x7FFFFFFE, 0x7FFFFFFF, 0x80000000, 0x80000001, 0x80000002, 0x80000003, 0xFFFFFFFC, 0xFFFFFFFD, 0xFFFFFFFE, 0xFFFFFFFF, }; int snums = sizeof(nums) / sizeof(nums[0]); struct { char *name; Bool (*func)(unsigned x, unsigned y); } ops[] = { { "eq", eq }, { "ne", ne }, { "gt", gt }, { "ge", ge }, { "lt", lt }, { "le", le }, { "gtu", gtu }, { "geu", geu }, { "ltu", ltu }, { "leu", leu }, }; 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) { *r1 = chooseReg(); do { *r2 = chooseReg(); } while (*r2 == *r1); } int newLabel(void) { static int lbl = 1000; return lbl++; } int main(void) { int i, j, k; Bool res; int r1, r2; int lbl1, lbl2; printf("\tadd\t$7,$0,'.'\n"); for (i = 0; i < snums; i++) { for (j = 0; j < snums; j++) { for (k = 0; k < sops; k++) { res = ops[k].func(nums[i], nums[j]); chooseRegs(&r1, &r2); lbl1 = newLabel(); printf("\tadd\t$%d,$0,0x%08X\n", r1, nums[i]); printf("\tadd\t$%d,$0,0x%08X\n", r2, nums[j]); printf("\tb%s\t$%d,$%d,L%d\n", ops[k].name, r1, r2, lbl1); if (res) { printf("\tadd\t$7,$0,'?'\n"); printf("L%d:\n", lbl1); } else { lbl2 = newLabel(); printf("\tj\tL%d\n", lbl2); printf("L%d:\n", lbl1); printf("\tadd\t$7,$0,'?'\n"); printf("L%d:\n", lbl2); } } } } 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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