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#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdnoreturn.h>
#include "util.h"
#include "arg.h"
#include "decl.h"
#include "pp.h"
#include "scope.h"
#include "token.h"
static noreturn void
usage(void)
{
fprintf(stderr, "usage: %s [input]\n", argv0);
exit(2);
}
int
main(int argc, char *argv[])
{
bool pponly = false;
char *output = NULL;
argv0 = progname(argv[0], "qbe");
ARGBEGIN {
case 'E':
pponly = true;
break;
case 'o':
output = EARGF(usage());
break;
default:
usage();
} ARGEND
if (argc == 1) {
if (!freopen(argv[0], "r", stdin))
fatal("open %s:", argv[0]);
} else if (argc) {
usage();
}
if (output) {
if (!freopen(output, "w", stdout))
fatal("open %s:", output);
}
ppinit(argc ? argv[0] : "<stdin>");
if (pponly) {
while (tok.kind != TEOF) {
tokprint(&tok);
next();
}
} else {
scopeputdecl(&filescope, "__builtin_va_start", &builtinvastart);
scopeputdecl(&filescope, "__builtin_va_arg", &builtinvaarg);
scopeputdecl(&filescope, "__builtin_va_end", &builtinvaend);
scopeputdecl(&filescope, "__builtin_offsetof", &builtinoffsetof);
while (tok.kind != TEOF) {
if (!decl(&filescope, NULL))
error(&tok.loc, "expected declaration or function definition");
}
}
emittentativedefns();
return 0;
}
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