Commit | Line | Data |
---|---|---|
b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
22d651dc ME |
2 | #include <malloc.h> |
3 | #include <string.h> | |
4 | #include <stdlib.h> | |
5 | #include <stdbool.h> | |
6 | ||
15ec3997 | 7 | #include "utils.h" |
22d651dc ME |
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 | } |