1 #include <stdint.h>
2 #include <inttypes.h>
3 #include <stdlib.h>
4 #include <string.h>
5 #include <stdio.h>
6 #include "../../../none/tests/s390x/opcodes.h"
7
8 /* Define various input buffers. */
9
10 /* U+0000 to U+007f: Result is 1 byte for each uint16_t */
11 uint16_t pattern1[] = {
12 0x0000, 0x007f, /* corner cases */
13 0x0047, 0x0056, 0x0045, 0x0021, 0x007b, 0x003a /* misc */
14 };
15
16 /* U+0080 to U+07ff: Result is 2 bytes for each uint16_t */
17 uint16_t pattern2[] = {
18 0x0080, 0x07ff, /* corner cases */
19 0x07df, 0x008f, 0x0100, 0x017f, 0x052f, 0x0600, 0x06ff /* misc */
20 };
21
22 /* U+0800 to U+d7ff: Result is 3 bytes for each uint16_t
23 U+dc00 to U+ffff: Result is 3 bytes for each uint16_t */
24 uint16_t pattern3[] = {
25 0x0800, 0xd7ff, /* corner cases */
26 0xdc00, 0xffff, /* corner cases */
27 0x083f, 0x1a21, 0x1b10, 0x2200, 0x225e, 0x22c9, 0xe001 /* misc */
28 };
29
30 /* U+d800 to U+dbff: Result is 4 bytes for each uint16_t pair */
31 uint16_t pattern4[] = {
32 0xd800, 0xdc00, /* left corner case */
33 0xdbff, 0xdfff, /* right corner case */
34 0xdada, 0xdddd, 0xdeaf, 0xdcdc /* misc */
35 };
36
37
38 void
do_cu21(uint8_t * dst,uint64_t dst_len,uint16_t * src,uint64_t src_len)39 do_cu21(uint8_t *dst, uint64_t dst_len, uint16_t *src, uint64_t src_len)
40 {
41 /* build up the register pairs */
42 register uint16_t *source asm("4") = src;
43 register uint64_t source_len asm("5") = src_len;
44 register uint8_t *dest asm("2") = dst;
45 register uint64_t dest_len asm("3") = dst_len;
46
47 asm volatile(
48 CU21(0,2,4)
49 : "+d"(dest), "+d"(source), "+d"(source_len), "+d"(dest_len)
50 :
51 : "memory", "cc");
52 return;
53 }
54
main()55 int main()
56 {
57 /*------------------------------------------------------------*/
58 /* Write to a too small buffer */
59 /*------------------------------------------------------------*/
60
61 /* Write 2 bytes into buffer of length 1 */
62 do_cu21(malloc(1), 10, pattern2, 2); // complaint (2 bytes)
63
64 /* Write 2 bytes into buffer of length 2 */
65 do_cu21(malloc(2), 10, pattern2, 2); // no complaint
66
67 /* Write 3 bytes into buffer of length 1 */
68 do_cu21(malloc(1), 10, pattern3, 2); // 2 complaints (3 = 2+1)
69
70 /* Write 3 bytes into buffer of length 2 */
71 do_cu21(malloc(2), 10, pattern3, 2); // complaint (1 byte)
72
73 /* Write 3 bytes into buffer of length 3 */
74 do_cu21(malloc(3), 10, pattern3, 2); // no complaint
75
76 /* Write 4 bytes into buffer of length 1 */
77 do_cu21(malloc(1), 10, pattern4, 4); // complaint (4 bytes)
78
79 /* Write 4 bytes into buffer of length 2 */
80 do_cu21(malloc(2), 10, pattern4, 4); // complaint (4 bytes)
81
82 /* Write 4 bytes into buffer of length 3 */
83 do_cu21(malloc(3), 10, pattern4, 4); // complaint (4 bytes)
84
85 /* Write 4 bytes into buffer of length 4 */
86 do_cu21(malloc(4), 10, pattern4, 4); // no complaint
87
88 /*------------------------------------------------------------*/
89 /* Read uninitialised data */
90 /*------------------------------------------------------------*/
91 uint8_t *input = malloc(10);
92
93 /* Input buffer is completely uninitialised */
94 do_cu21(malloc(4), 4, (void *)input, 2); // complaint
95
96 /* Read 2 bytes from input buffer. First byte is uninitialised */
97 input = malloc(10);
98 input[1] = 0x0;
99 do_cu21(malloc(4), 4, (void *)input, 2); // complaint
100
101 /* Read 2 bytes from input buffer. Second byte is uninitialised */
102 input = malloc(10);
103 input[0] = 0x0;
104 do_cu21(malloc(4), 4, (void *)input, 2); // complaint
105
106 /* Read 2 bytes from input buffer. All bytes are initialised */
107 input = malloc(10);
108 input[0] = input[1] = 0x0;
109 do_cu21(malloc(4), 4, (void *)input, 2); // no complaint
110
111 /* Read 4 bytes from input buffer. This iterates once. In the 1st
112 iteration all input bytes are initialised in the 2nd iteration all
113 input bytes are uninitialised. */
114 input = malloc(10);
115 input[0] = input[1] = 0x0;
116 do_cu21(malloc(4), 4, (void *)input, 4); // complaint
117
118 /* Write to NULL */
119 // do_cu21(NULL, 10, pattern1, sizeof pattern1); // complaint
120
121 return 0;
122 }
123