Question

I’m writing an emulator in C. Its memory is byte-addressible so I’m using a char array, but I need to read/write unaligned 32-bit integers.

Currently I’m using *((unsigned int*) &memory[address]), but it seems pretty horrible. What’s the best way to do it?

Answer 1

You can use memcpy() directly. For example:

unsigned int x = 10;
unsigned char* memory = malloc(sizeof(unsigned char) * 512);
address = sizeof(unsigned char) * 256;

memcpy(memory + address, &x, sizeof(unsigned int));