1 /* 2 * Convert a data file into a .S file suitable for assembly. 3 * This reads from stdin and writes to stdout and takes a single 4 * argument for the name of the symbol in the assembly file. 5 */ 6 7 #include <stdio.h> 8 9 int main(int argc, char *argv[]) { 10 unsigned char buf[4096]; 11 size_t amt; 12 size_t i; 13 int col = 0; 14 char *name; 15 16 if (argc != 2) { 17 fprintf(stderr, "usage: %s NAME < DAT_FILE > ASM_FILE\n", argv[0]); 18 for (i=0; i<argc; i++) { 19 fprintf(stderr, " '%s'", argv[i]); 20 } 21 fprintf(stderr, "\n"); 22 return 1; 23 } 24 25 name = argv[1]; 26 27 printf("\ 28 #ifdef __APPLE_CC__\n\ 29 /*\n\ 30 * The mid-2007 version of gcc that ships with Macs requires a\n\ 31 * comma on the .section line, but the rest of the world thinks\n\ 32 * that's a syntax error. It also wants globals to be explicitly\n\ 33 * prefixed with \"_\" as opposed to modern gccs that do the\n\ 34 * prefixing for you.\n\ 35 */\n\ 36 .globl _%s\n\ 37 .section .rodata,\n\ 38 .align 8\n\ 39 _%s:\n\ 40 #else\n\ 41 .globl %s\n\ 42 .section .rodata\n\ 43 .align 8\n\ 44 %s:\n\ 45 #endif\n\ 46 ", name, name, name, name); 47 48 while (! feof(stdin)) { 49 amt = fread(buf, 1, sizeof(buf), stdin); 50 for (i = 0; i < amt; i++) { 51 if (col == 0) { 52 printf(".byte "); 53 } 54 printf("0x%02x", buf[i]); 55 col++; 56 if (col == 16) { 57 printf("\n"); 58 col = 0; 59 } else if (col % 4 == 0) { 60 printf(", "); 61 } else { 62 printf(","); 63 } 64 } 65 } 66 67 if (col != 0) { 68 printf("\n"); 69 } 70 71 return 0; 72 } 73
