Created
March 27, 2019 11:05
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| void hex_dump(void *addr, int len) | |
| { | |
| printf("length of hexdump = %d", len); | |
| int i; | |
| unsigned char buff[17]; | |
| unsigned char *pc = (unsigned char *)addr; | |
| // Process every byte in the data. | |
| for (i = 0; i < len; i ) | |
| { | |
| // Multiple of 16 means new line (with line offset). | |
| if ((i % 16) == 0) | |
| { | |
| // Just don't print ASCII for the zeroth line. | |
| if (i != 0) | |
| printf(" %s\n", buff); | |
| // Output the offset. | |
| printf(" x ", i); | |
| } | |
| // Now the hex code for the specific character. | |
| printf(" x", pc[i]); | |
| // And store a printable ASCII character for later. | |
| if ((pc[i] < 0x20) || (pc[i] > 0x7e)) | |
| buff[i % 16] = '.'; | |
| else | |
| buff[i % 16] = pc[i]; | |
| buff[(i % 16) 1] = '\0'; | |
| } | |
| // Pad out last line if not exactly 16 characters. | |
| while ((i % 16) != 0) | |
| { | |
| printf(" "); | |
| i ; | |
| } | |
| // And print the final ASCII bit. | |
| printf(" %s\n", buff); | |
| } | |
| // Now the hex code for the specific character. | |
| printf (" x", pc[i]); | |
| // And store a printable ASCII character for later. | |
| if ((pc[i] < 0x20) || (pc[i] > 0x7e)) | |
| buff[i % 16] = '.'; | |
| else | |
| buff[i % 16] = pc[i]; | |
| buff[(i % 16) 1] = '\0'; | |
| } | |
| // Pad out last line if not exactly 16 characters. | |
| while ((i % 16) != 0) { | |
| printf (" "); | |
| i ; | |
| } | |
| // And print the final ASCII bit. | |
| printf (" %s\n", buff); | |
| } |
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