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* A function illustrating how to link C code to code generated from LLVM
#include <stdio.h>
* Font information: one byte per row, 8 rows per character
* In order, space, 0-9, A-Z
static const char font[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x1c, 0x3e, 0x61, 0x41, 0x43, 0x3e, 0x1c, 0x00,
0x00, 0x40, 0x42, 0x7f, 0x7f, 0x40, 0x40, 0x00,
0x62, 0x73, 0x79, 0x59, 0x5d, 0x4f, 0x46, 0x00,
0x20, 0x61, 0x49, 0x4d, 0x4f, 0x7b, 0x31, 0x00,
0x18, 0x1c, 0x16, 0x13, 0x7f, 0x7f, 0x10, 0x00,
0x27, 0x67, 0x45, 0x45, 0x45, 0x7d, 0x38, 0x00,
0x3c, 0x7e, 0x4b, 0x49, 0x49, 0x79, 0x30, 0x00,
0x03, 0x03, 0x71, 0x79, 0x0d, 0x07, 0x03, 0x00,
0x36, 0x4f, 0x4d, 0x59, 0x59, 0x76, 0x30, 0x00,
0x06, 0x4f, 0x49, 0x49, 0x69, 0x3f, 0x1e, 0x00,
0x7c, 0x7e, 0x13, 0x11, 0x13, 0x7e, 0x7c, 0x00,
0x7f, 0x7f, 0x49, 0x49, 0x49, 0x7f, 0x36, 0x00,
0x1c, 0x3e, 0x63, 0x41, 0x41, 0x63, 0x22, 0x00,
0x7f, 0x7f, 0x41, 0x41, 0x63, 0x3e, 0x1c, 0x00,
0x00, 0x7f, 0x7f, 0x49, 0x49, 0x49, 0x41, 0x00,
0x7f, 0x7f, 0x09, 0x09, 0x09, 0x09, 0x01, 0x00,
0x1c, 0x3e, 0x63, 0x41, 0x49, 0x79, 0x79, 0x00,
0x7f, 0x7f, 0x08, 0x08, 0x08, 0x7f, 0x7f, 0x00,
0x00, 0x41, 0x41, 0x7f, 0x7f, 0x41, 0x41, 0x00,
0x20, 0x60, 0x40, 0x40, 0x40, 0x7f, 0x3f, 0x00,
0x7f, 0x7f, 0x18, 0x3c, 0x76, 0x63, 0x41, 0x00,
0x00, 0x7f, 0x7f, 0x40, 0x40, 0x40, 0x40, 0x00,
0x7f, 0x7f, 0x0e, 0x1c, 0x0e, 0x7f, 0x7f, 0x00,
0x7f, 0x7f, 0x0e, 0x1c, 0x38, 0x7f, 0x7f, 0x00,
0x3e, 0x7f, 0x41, 0x41, 0x41, 0x7f, 0x3e, 0x00,
0x7f, 0x7f, 0x11, 0x11, 0x11, 0x1f, 0x0e, 0x00,
0x3e, 0x7f, 0x41, 0x51, 0x71, 0x3f, 0x5e, 0x00,
0x7f, 0x7f, 0x11, 0x31, 0x79, 0x6f, 0x4e, 0x00,
0x26, 0x6f, 0x49, 0x49, 0x4b, 0x7a, 0x30, 0x00,
0x00, 0x01, 0x01, 0x7f, 0x7f, 0x01, 0x01, 0x00,
0x3f, 0x7f, 0x40, 0x40, 0x40, 0x7f, 0x3f, 0x00,
0x0f, 0x1f, 0x38, 0x70, 0x38, 0x1f, 0x0f, 0x00,
0x1f, 0x7f, 0x38, 0x1c, 0x38, 0x7f, 0x1f, 0x00,
0x63, 0x77, 0x3e, 0x1c, 0x3e, 0x77, 0x63, 0x00,
0x00, 0x03, 0x0f, 0x78, 0x78, 0x0f, 0x03, 0x00,
0x61, 0x71, 0x79, 0x5d, 0x4f, 0x47, 0x43, 0x00
void printbig(int c)
int index = 0;
int col, data;
if (c >= '0' && c <= '9') index = 8 + (c - '0') * 8;
else if (c >= 'A' && c <= 'Z') index = 88 + (c - 'A') * 8;
do {
data = font[index++];
for (col = 0 ; col < 8 ; data <<= 1, col++) {
char d = data & 0x80 ? 'X' : ' ';
putchar(d); putchar(d);
} while (index & 0x7);
int main()
char s[] = "HELLO WORLD09AZ";
char *c;
for ( c = s ; *c ; c++) printbig(*c);