Hojun-Cho
2c33228b7e
Plan 9-style w-prefix on the per-arch tools, disambiguating from the
real Plan 9 6c/6a/6l in ref/plan9front/:
cmd/wwc/ → cmd/wcc/ libwwc.a → libwcc.a
cmd/6{c,a,l} → cmd/w6{c,a,l} binary names too
test/wwc/ → test/wcc/ 6 test files w/ w6 prefix
selfhost/cmd mirror in lockstep
bootstrap/amd64/{w6c,w6a,w6l} snapshot binaries (gitignored)
WW_6{C,A,L} → WW_W6{C,A,L} env-var overrides
Plan 9 source-tree refs ("Plan 9 6c shape", ref/plan9front/, etc.)
preserved. Hare-style driver, both C and ww sides:
ww test [path] discover *_test.ww in a directory module, run
each; single-file mode for `ww test foo.ww`
Module-by-name `ww build foo` resolves to foo.ww or foo/foo.ww
via search path (cwd : -I dirs : $WW_LIB)
Default-to-cwd `ww build` / `ww test` build the cwd module
Run pass-through `ww run path arg1 arg2` reaches the program
lib/os: getcwd (79) and getdents64 (217) syscalls power `.` resolution
and directory enumeration on the ww side.
Makefile: wwstage tool deps now include lib/os/os.ww (+ lib/strconv
for wwdump_ww) so lib/* edits force their rebuild instead of leaving
stale binaries — surfaced when test 995 first failed against a stale
w6c_ww built before the lib/os additions.
Test 993 byte-identical parity gate (C-side ww vs ww-side ww_ww on a
build corpus) stays green; all 19 tests pass.
91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
/*
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* 400_6c — codegen smoke tests. Each row supplies a tiny ww source
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* and a list of substrings expected in the emitted .s. We don't
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* golden-match the whole file (too brittle); we just verify that
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* key opcodes and operand shapes show up.
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*/
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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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#include <unistd.h>
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static int
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run6c(const char *src, char **out)
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{
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char path[64];
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snprintf(path, sizeof path, "/tmp/wwt_%d.ww", getpid());
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FILE *f = fopen(path, "wb");
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if (f == NULL) return -1;
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fputs(src, f);
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fclose(f);
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char cmd[256];
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const char *bin = getenv("BIN");
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if (!bin) bin = "out/bin";
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snprintf(cmd, sizeof cmd, "%s/w6c %s 2>&1", bin, path);
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FILE *p = popen(cmd, "r");
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if (p == NULL) { unlink(path); return -1; }
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size_t cap = 4096, n = 0;
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char *buf = malloc(cap);
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int c;
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while ((c = fgetc(p)) != EOF) {
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if (n + 1 >= cap) { cap *= 2; buf = realloc(buf, cap); }
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buf[n++] = (char)c;
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}
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buf[n] = '\0';
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int rc = pclose(p);
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unlink(path);
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*out = buf;
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return rc;
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}
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static int
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contains(const char *hay, const char *needle)
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{
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return strstr(hay, needle) != NULL;
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}
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struct row { const char *src; const char *needle; };
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static const struct row rows[] = {
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{ "fn main() i32 = { return 42; };", "MOVQ\t$42, AX" },
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{ "fn main() i32 = { return 42; };", "RET" },
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{ "fn id(x: i32) i32 = { return x; };","MOVQ\tDI, -8(BP)" },
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{ "fn add(a: i32, b: i32) i32 = { return a + b; };", "ADDQ\tBX, AX" },
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{ "fn sub(a: i32, b: i32) i32 = { return a - b; };", "SUBQ\tBX, AX" },
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{ "fn mul(a: i32, b: i32) i32 = { return a * b; };", "IMULQ\tBX, AX" },
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{ "fn neg(x: i32) i32 = { return -x; };", "NEGQ\tAX" },
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{ "fn cmp(a: i32, b: i32) bool = { return a == b; };", "CMPQ\tBX, AX" },
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{ "fn cmp(a: i32, b: i32) bool = { return a == b; };", "JE" },
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{ "fn cond(x: i32) i32 = { if (x > 0) { return 1; }; return 0; };",
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"CMPQ\t$0, AX" },
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{ "fn lo() void = { for (let i: i32 = 0; i < 10; i += 1) { }; };", "JMP" },
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{ "fn callit() i32 = { return 1; };", "TEXT callit,$0" },
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};
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int
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main(void)
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{
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int n = sizeof rows / sizeof rows[0];
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int fail = 0;
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for (int i = 0; i < n; i++) {
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char *out = NULL;
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int rc = run6c(rows[i].src, &out);
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if (rc != 0) {
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fprintf(stderr, "row %d: w6c rc=%d\n", i, rc);
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fail++;
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free(out);
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continue;
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}
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if (!contains(out, rows[i].needle)) {
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fprintf(stderr, "row %d: missing '%s' in:\n%s\n",
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i, rows[i].needle, out);
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fail++;
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}
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free(out);
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}
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if (fail) { fprintf(stderr, "%d/%d w6c tests failed\n", fail, n); return 1; }
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printf("w6c: %d/%d ok\n", n, n);
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return 0;
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}
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