138494Sobrien/* 238494Sobrien * strcmp test. 342629Sobrien * 438494Sobrien * Copyright (c) 2019-2022, Arm Limited. 538494Sobrien * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception 638494Sobrien */ 742629Sobrien 838494Sobrien#include <stdint.h> 942629Sobrien#include <stdio.h> 1038494Sobrien#include <stdlib.h> 1138494Sobrien#include <string.h> 1238494Sobrien#include "mte.h" 1338494Sobrien#include "stringlib.h" 1438494Sobrien#include "stringtest.h" 1538494Sobrien 1638494Sobrien#define F(x, mte) {#x, x, mte}, 1738494Sobrien 1838494Sobrienstatic const struct fun 1938494Sobrien{ 2038494Sobrien const char *name; 2138494Sobrien int (*fun) (const char *s1, const char *s2); 2238494Sobrien int test_mte; 2338494Sobrien} funtab[] = { 2438494Sobrien // clang-format off 2538494Sobrien F(strcmp, 0) 2638494Sobrien#if __aarch64__ 2738494Sobrien F(__strcmp_aarch64, 1) 2838494Sobrien# if __ARM_FEATURE_SVE 2938494Sobrien F(__strcmp_aarch64_sve, 1) 3038494Sobrien# endif 3138494Sobrien#elif __arm__ 3238494Sobrien# if __ARM_ARCH >= 7 && __ARM_ARCH_ISA_ARM >= 1 3338494Sobrien F(__strcmp_arm, 0) 3438494Sobrien# elif __ARM_ARCH == 6 && __ARM_ARCH_6M__ >= 1 3538494Sobrien F(__strcmp_armv6m, 0) 3638494Sobrien# endif 3738494Sobrien#endif 3838494Sobrien {0, 0, 0} 3938494Sobrien // clang-format on 4038494Sobrien}; 4138494Sobrien#undef F 4238494Sobrien 4338494Sobrien#define A 32 4438494Sobrien#define LEN 250000 4538494Sobrienstatic char *s1buf; 4638494Sobrienstatic char *s2buf; 4738494Sobrien 4838494Sobrienstatic void * 4938494Sobrienalignup (void *p) 5038494Sobrien{ 5138494Sobrien return (void *) (((uintptr_t) p + A - 1) & -A); 5238494Sobrien} 5338494Sobrien 5438494Sobrienstatic void 5538494Sobrientest (const struct fun *fun, int s1align, int s2align, int len, int diffpos, 5638494Sobrien int delta) 5738494Sobrien{ 5838494Sobrien char *src1 = alignup (s1buf); 5938494Sobrien char *src2 = alignup (s2buf); 6038494Sobrien char *s1 = src1 + s1align; 6138494Sobrien char *s2 = src2 + s2align; 6238494Sobrien int r; 6338494Sobrien 6438494Sobrien if (err_count >= ERR_LIMIT) 6538494Sobrien return; 6638494Sobrien if (len > LEN || s1align >= A || s2align >= A) 6738494Sobrien abort (); 6838494Sobrien if (diffpos >= len) 6938494Sobrien abort (); 7038494Sobrien if ((diffpos < 0) != (delta == 0)) 7138494Sobrien abort (); 7238494Sobrien 7338494Sobrien for (int i = 0; i < len + A; i++) 7438494Sobrien src1[i] = src2[i] = '?'; 7538494Sobrien for (int i = 0; i < len; i++) 7638494Sobrien s1[i] = s2[i] = 'a' + i % 23; 7738494Sobrien if (delta) 7838494Sobrien s1[diffpos] += delta; 7938494Sobrien s1[len] = s2[len] = '\0'; 8038494Sobrien 8138494Sobrien s1 = tag_buffer (s1, len + 1, fun->test_mte); 8238494Sobrien s2 = tag_buffer (s2, len + 1, fun->test_mte); 8338494Sobrien r = fun->fun (s1, s2); 8438494Sobrien untag_buffer (s1, len + 1, fun->test_mte); 8538494Sobrien untag_buffer (s2, len + 1, fun->test_mte); 8638494Sobrien 8738494Sobrien if ((delta == 0 && r != 0) || (delta > 0 && r <= 0) || (delta < 0 && r >= 0)) 8838494Sobrien { 8938494Sobrien ERR ("%s(align %d, align %d, %d) failed, returned %d\n", fun->name, 9038494Sobrien s1align, s2align, len, r); 9138494Sobrien quoteat ("src1", src1, len + A, diffpos); 9238494Sobrien quoteat ("src2", src2, len + A, diffpos); 9338494Sobrien } 9438494Sobrien} 9538494Sobrien 9638494Sobrienint 9738494Sobrienmain () 9838494Sobrien{ 9938494Sobrien s1buf = mte_mmap (LEN + 2 * A + 1); 10038494Sobrien s2buf = mte_mmap (LEN + 2 * A + 1); 10138494Sobrien int r = 0; 10238494Sobrien for (int i = 0; funtab[i].name; i++) 10338494Sobrien { 10438494Sobrien err_count = 0; 10538494Sobrien for (int d = 0; d < A; d++) 106 for (int s = 0; s < A; s++) 107 { 108 int n; 109 test (funtab + i, d, s, 0, -1, 0); 110 test (funtab + i, d, s, 1, -1, 0); 111 test (funtab + i, d, s, 1, 0, 1); 112 test (funtab + i, d, s, 1, 0, -1); 113 for (n = 2; n < 100; n++) 114 { 115 test (funtab + i, d, s, n, -1, 0); 116 test (funtab + i, d, s, n, n - 1, -1); 117 test (funtab + i, d, s, n, n / 2, 1); 118 } 119 for (; n < LEN; n *= 2) 120 { 121 test (funtab + i, d, s, n, -1, 0); 122 test (funtab + i, d, s, n, n / 2, -1); 123 } 124 } 125 char *pass = funtab[i].test_mte && mte_enabled () ? "MTE PASS" : "PASS"; 126 printf ("%s %s\n", err_count ? "FAIL" : pass, funtab[i].name); 127 if (err_count) 128 r = -1; 129 } 130 return r; 131} 132