1 // SPDX-License-Identifier: GPL-2.0 2 #include <malloc.h> 3 #include <string.h> 4 #include <stdlib.h> 5 #include <stdbool.h> 6 7 #include "utils.h" 8 9 #define MAX_LEN 8192 10 #define MAX_OFFSET 16 11 #define MIN_REDZONE 128 12 #define BUFLEN (MAX_LEN+MAX_OFFSET+2*MIN_REDZONE) 13 #define POISON 0xa5 14 15 unsigned long COPY_LOOP(void *to, const void *from, unsigned long size); 16 17 static void do_one(char *src, char *dst, unsigned long src_off, 18 unsigned long dst_off, unsigned long len, void *redzone, 19 void *fill) 20 { 21 char *srcp, *dstp; 22 unsigned long ret; 23 unsigned long i; 24 25 srcp = src + MIN_REDZONE + src_off; 26 dstp = dst + MIN_REDZONE + dst_off; 27 28 memset(src, POISON, BUFLEN); 29 memset(dst, POISON, BUFLEN); 30 memcpy(srcp, fill, len); 31 32 ret = COPY_LOOP(dstp, srcp, len); 33 if (ret && ret != (unsigned long)dstp) { 34 printf("(%p,%p,%ld) returned %ld\n", dstp, srcp, len, ret); 35 abort(); 36 } 37 38 if (memcmp(dstp, srcp, len)) { 39 printf("(%p,%p,%ld) miscompare\n", dstp, srcp, len); 40 printf("src: "); 41 for (i = 0; i < len; i++) 42 printf("%02x ", srcp[i]); 43 printf("\ndst: "); 44 for (i = 0; i < len; i++) 45 printf("%02x ", dstp[i]); 46 printf("\n"); 47 abort(); 48 } 49 50 if (memcmp(dst, redzone, dstp - dst)) { 51 printf("(%p,%p,%ld) redzone before corrupted\n", 52 dstp, srcp, len); 53 abort(); 54 } 55 56 if (memcmp(dstp+len, redzone, dst+BUFLEN-(dstp+len))) { 57 printf("(%p,%p,%ld) redzone after corrupted\n", 58 dstp, srcp, len); 59 abort(); 60 } 61 } 62 63 int test_copy_loop(void) 64 { 65 char *src, *dst, *redzone, *fill; 66 unsigned long len, src_off, dst_off; 67 unsigned long i; 68 69 src = memalign(BUFLEN, BUFLEN); 70 dst = memalign(BUFLEN, BUFLEN); 71 redzone = malloc(BUFLEN); 72 fill = malloc(BUFLEN); 73 74 if (!src || !dst || !redzone || !fill) { 75 fprintf(stderr, "malloc failed\n"); 76 exit(1); 77 } 78 79 memset(redzone, POISON, BUFLEN); 80 81 /* Fill with sequential bytes */ 82 for (i = 0; i < BUFLEN; i++) 83 fill[i] = i & 0xff; 84 85 for (len = 1; len < MAX_LEN; len++) { 86 for (src_off = 0; src_off < MAX_OFFSET; src_off++) { 87 for (dst_off = 0; dst_off < MAX_OFFSET; dst_off++) { 88 do_one(src, dst, src_off, dst_off, len, 89 redzone, fill); 90 } 91 } 92 } 93 94 return 0; 95 } 96 97 int main(void) 98 { 99 return test_harness(test_copy_loop, str(COPY_LOOP)); 100 } 101
