Hojun-Cho
b795c320c9
@test was parsed then dropped (no consumer); `ww test` needed a hand-written
main listing each test by hand, so adding a @test and forgetting the call
silently skipped it. -T makes the checker collect @test N_FNDECLs in source
order, loud-reject a user main, and append a synthetic
`export fn main() i32 { t0(); ...; return 0; }` at the install->body-check seam;
the existing cgfn emits it (cgen untouched) -> byte-identical by construction.
Mirrors harec's checker-side is_test placement.
Plan-9-lean reduction (user-sanctioned, reinstatable post-CSP): sequential,
abort/nonzero=fail; no setjmp isolation, no fnmatch filter, no file:line.
910/997 rewired from a regex scanner to driving `w6c -T` directly (thin trusted
drivers; the @test content stays ww), with a cross-stage byte-id assert on the
-T output. attest_userman/attest_badsig pin the user-main and bad-signature
rejects.
98 lines
2.0 KiB
C
98 lines
2.0 KiB
C
/*
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* w6c — amd64 compiler driver. Reads a .ww source file, runs the
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* libwcc frontend (lex → parse → check), then walks the typed AST
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* via cgen.c and writes Plan 9-flavoured amd64 asm to stdout (or
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* the file given by -o).
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*/
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#include "gc.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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static int
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slurp(const char *path, char **outbuf, u64 *outlen)
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{
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FILE *f = fopen(path, "rb");
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if (f == NULL) return -1;
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fseek(f, 0, SEEK_END);
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long n = ftell(f);
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fseek(f, 0, SEEK_SET);
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if (n < 0) { fclose(f); return -1; }
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char *b = malloc((size_t)n + 1);
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if (b == NULL) { fclose(f); return -1; }
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if (fread(b, 1, (size_t)n, f) != (size_t)n) { free(b); fclose(f); return -1; }
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b[n] = '\0';
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fclose(f);
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*outbuf = b;
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*outlen = (u64)n;
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return 0;
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}
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int
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main(int argc, char **argv)
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{
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const char *src = NULL;
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const char *out = NULL;
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int testmode = 0;
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for (int i = 1; i < argc; i++) {
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const char *a = argv[i];
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if (strcmp(a, "-o") == 0 && i + 1 < argc) {
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out = argv[++i];
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} else if (strcmp(a, "-T") == 0) {
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testmode = 1;
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} else if (a[0] == '-') {
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fprintf(stderr, "w6c: unknown flag %s\n", a);
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return 2;
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} else if (src == NULL) {
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src = a;
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} else {
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fprintf(stderr, "w6c: only one input supported\n");
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return 2;
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}
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}
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if (src == NULL) {
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fputs("usage: w6c [-T] [-o out.s] file.ww\n", stderr);
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return 2;
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}
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char *buf;
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u64 len;
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if (slurp(src, &buf, &len) < 0) {
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fprintf(stderr, "w6c: %s: cannot read\n", src);
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return 1;
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}
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Arena *a = newarena();
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Lex l;
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Parser p;
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Checker c;
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Cg cg;
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lexinit(&l, a, src, buf, len);
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parserinit(&p, a, &l);
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Node *file = parsefile(&p);
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if (l.errs || p.errs) return 1;
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check_init(&c, a);
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c.is_test = testmode;
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check_file(&c, file);
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if (c.errs) return 1;
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FILE *of = stdout;
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if (out) {
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of = fopen(out, "wb");
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if (of == NULL) {
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fprintf(stderr, "w6c: cannot open %s\n", out);
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return 1;
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}
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}
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cg_init(&cg, a);
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cg_file(&cg, of, file);
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if (of != stdout) fclose(of);
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freearena(a);
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free(buf);
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return 0;
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}
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