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