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#include <stdio.h>
#include <stdlib.h>
void display_mem(void* mem, int mem_size, int line_len) {
/*
mem - pointer to beggining of memory region to be printed
mem_size - number of bytes mem points to
line_len - number of bytyes to display per line
*/
unsigned char* data = mem;
int full_lines = mem_size / line_len;
unsigned char* addr = mem;
for (int linno = 0; linno < full_lines; linno++) {
// Print Address
printf("0x%x\t", addr);
// Print Hex
for (int i = 0; i < line_len; i++) {
printf(" %02x", data[linno*line_len + i]);
}
printf("\t");
// Print Ascii
for (int i = 0; i < line_len; i++) {
char c = data[linno*line_len + i];
if ( 32 < c && c < 125) {
printf(" %c", c);
}
else {
printf(" .");
}
}
printf("\n");
addr += line_len;
}
// Print any remaining bytes that couldn't make a full line
int remaining = mem_size % line_len;
if (remaining > 0) {
// Print Address
printf("0x%x\t", addr);
// Print Hex
for (int i = 0; i < remaining; i++) {
printf(" %02x", data[line_len*full_lines + i]);
}
for (int i = 0; i < line_len - remaining; i++) {
printf(" ");
}
printf("\t");
// Print Hex
for (int i = 0; i < remaining; i++) {
char c = data[line_len*full_lines + i];
if ( 32 < c && c < 125) {
printf(" %c", c);
}
else {
printf(" .");
}
}
printf("\n");
}
}
int main()
{
char* test = malloc(100);
for (int i = 0 ; i < 100; i++) {
test[i] = rand() % 127;
}
test[0] = 't';
test[1] = 'e';
test[2] = 's';
test[3] = 't';
display_mem(test, 100, 7);
return 0;
}
