Embedding binary data in C programs

example.c

#include <stdint.h>
#include <stdio.h>

extern uint8_t rom_start[], rom_end[];
extern uint16_t rom_size;

int main() {
  printf("rom_size: 0x%X\n", rom_size);
  for (int i = 0; i < rom_size; i++) {
    printf("%02x: %02x\n", i, *(rom_start + i));
  }
  return 0;
}

Makefile

CFLAGS = -g

example: example.o rom.o
	$(CC) -o $@ $^

rom.o: rom.S rom.bin

rom.bin:
	echo -n -e '\x09\x08\x07\x06\x05\x04\x03\x02\x01\x00' > $@

clean:
	rm -f example *.o rom.bin

rom.S

	    .section ".rodata"
	    .global rom_start
	    .global rom_end
	    .global rom_size
rom_start:
            .incbin "rom.bin"
rom_end:
rom_size: .int rom_end - rom_start