| #include <stdint.h> |
| #include <inttypes.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <stdio.h> |
| #include "../../../none/tests/s390x/opcodes.h" |
| |
| /* Define various input buffers. */ |
| |
| /* U+0000 to U+007f: Result is 1 byte for each uint16_t */ |
| uint16_t pattern1[] = { |
| 0x0000, 0x007f, /* corner cases */ |
| 0x0047, 0x0056, 0x0045, 0x0021, 0x007b, 0x003a /* misc */ |
| }; |
| |
| /* U+0080 to U+07ff: Result is 2 bytes for each uint16_t */ |
| uint16_t pattern2[] = { |
| 0x0080, 0x07ff, /* corner cases */ |
| 0x07df, 0x008f, 0x0100, 0x017f, 0x052f, 0x0600, 0x06ff /* misc */ |
| }; |
| |
| /* U+0800 to U+d7ff: Result is 3 bytes for each uint16_t |
| U+dc00 to U+ffff: Result is 3 bytes for each uint16_t */ |
| uint16_t pattern3[] = { |
| 0x0800, 0xd7ff, /* corner cases */ |
| 0xdc00, 0xffff, /* corner cases */ |
| 0x083f, 0x1a21, 0x1b10, 0x2200, 0x225e, 0x22c9, 0xe001 /* misc */ |
| }; |
| |
| /* U+d800 to U+dbff: Result is 4 bytes for each uint16_t pair */ |
| uint16_t pattern4[] = { |
| 0xd800, 0xdc00, /* left corner case */ |
| 0xdbff, 0xdfff, /* right corner case */ |
| 0xdada, 0xdddd, 0xdeaf, 0xdcdc /* misc */ |
| }; |
| |
| |
| void |
| do_cu21(uint8_t *dst, uint64_t dst_len, uint16_t *src, uint64_t src_len) |
| { |
| /* build up the register pairs */ |
| register uint16_t *source asm("4") = src; |
| register uint64_t source_len asm("5") = src_len; |
| register uint8_t *dest asm("2") = dst; |
| register uint64_t dest_len asm("3") = dst_len; |
| |
| asm volatile( |
| CU21(0,2,4) |
| : "+d"(dest), "+d"(source), "+d"(source_len), "+d"(dest_len) |
| : |
| : "memory", "cc"); |
| return; |
| } |
| |
| int main() |
| { |
| /*------------------------------------------------------------*/ |
| /* Write to a too small buffer */ |
| /*------------------------------------------------------------*/ |
| |
| /* Write 2 bytes into buffer of length 1 */ |
| do_cu21(malloc(1), 10, pattern2, 2); // complaint (2 bytes) |
| |
| /* Write 2 bytes into buffer of length 2 */ |
| do_cu21(malloc(2), 10, pattern2, 2); // no complaint |
| |
| /* Write 3 bytes into buffer of length 1 */ |
| do_cu21(malloc(1), 10, pattern3, 2); // 2 complaints (3 = 2+1) |
| |
| /* Write 3 bytes into buffer of length 2 */ |
| do_cu21(malloc(2), 10, pattern3, 2); // complaint (1 byte) |
| |
| /* Write 3 bytes into buffer of length 3 */ |
| do_cu21(malloc(3), 10, pattern3, 2); // no complaint |
| |
| /* Write 4 bytes into buffer of length 1 */ |
| do_cu21(malloc(1), 10, pattern4, 4); // complaint (4 bytes) |
| |
| /* Write 4 bytes into buffer of length 2 */ |
| do_cu21(malloc(2), 10, pattern4, 4); // complaint (4 bytes) |
| |
| /* Write 4 bytes into buffer of length 3 */ |
| do_cu21(malloc(3), 10, pattern4, 4); // complaint (4 bytes) |
| |
| /* Write 4 bytes into buffer of length 4 */ |
| do_cu21(malloc(4), 10, pattern4, 4); // no complaint |
| |
| /*------------------------------------------------------------*/ |
| /* Read uninitialised data */ |
| /*------------------------------------------------------------*/ |
| uint8_t *input = malloc(10); |
| |
| /* Input buffer is completely uninitialised */ |
| do_cu21(malloc(4), 4, (void *)input, 2); // complaint |
| |
| /* Read 2 bytes from input buffer. First byte is uninitialised */ |
| input = malloc(10); |
| input[1] = 0x0; |
| do_cu21(malloc(4), 4, (void *)input, 2); // complaint |
| |
| /* Read 2 bytes from input buffer. Second byte is uninitialised */ |
| input = malloc(10); |
| input[0] = 0x0; |
| do_cu21(malloc(4), 4, (void *)input, 2); // complaint |
| |
| /* Read 2 bytes from input buffer. All bytes are initialised */ |
| input = malloc(10); |
| input[0] = input[1] = 0x0; |
| do_cu21(malloc(4), 4, (void *)input, 2); // no complaint |
| |
| /* Read 4 bytes from input buffer. This iterates once. In the 1st |
| iteration all input bytes are initialised in the 2nd iteration all |
| input bytes are uninitialised. */ |
| input = malloc(10); |
| input[0] = input[1] = 0x0; |
| do_cu21(malloc(4), 4, (void *)input, 4); // complaint |
| |
| /* Write to NULL */ |
| // do_cu21(NULL, 10, pattern1, sizeof pattern1); // complaint |
| |
| return 0; |
| } |