73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
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/*
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* Convert a data file into a .S file suitable for assembly.
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* This reads from stdin and writes to stdout and takes a single
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* argument for the name of the symbol in the assembly file.
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*/
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#include <stdio.h>
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int main(int argc, char *argv[]) {
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unsigned char buf[4096];
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size_t amt;
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size_t i;
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int col = 0;
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char *name;
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if (argc != 2) {
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fprintf(stderr, "usage: %s NAME < DAT_FILE > ASM_FILE\n", argv[0]);
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for (i=0; i<argc; i++) {
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fprintf(stderr, " '%s'", argv[i]);
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}
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fprintf(stderr, "\n");
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return 1;
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}
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name = argv[1];
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printf("\
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#ifdef __APPLE_CC__\n\
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/*\n\
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* The mid-2007 version of gcc that ships with Macs requires a\n\
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* comma on the .section line, but the rest of the world thinks\n\
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* that's a syntax error. It also wants globals to be explicitly\n\
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* prefixed with \"_\" as opposed to modern gccs that do the\n\
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* prefixing for you.\n\
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*/\n\
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.globl _%s\n\
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.section .rodata,\n\
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.align 8\n\
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_%s:\n\
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#else\n\
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.globl %s\n\
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.section .rodata\n\
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.align 8\n\
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%s:\n\
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#endif\n\
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", name, name, name, name);
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while (! feof(stdin)) {
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amt = fread(buf, 1, sizeof(buf), stdin);
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for (i = 0; i < amt; i++) {
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if (col == 0) {
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printf(".byte ");
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}
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printf("0x%02x", buf[i]);
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col++;
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if (col == 16) {
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printf("\n");
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col = 0;
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} else if (col % 4 == 0) {
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printf(", ");
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} else {
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printf(",");
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}
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}
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}
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if (col != 0) {
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printf("\n");
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}
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return 0;
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}
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