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.
81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
/*
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* 800_ffi — verify the @symbol("X") attribute redirects CALLs at
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* the codegen layer. The ww source declares a body-less fn with an
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* external symbol name, calls it; the emitted .s must reference the
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* external name, not the ww-side ident.
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*
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* Also smoke-tests building lib/c/libc/libc.ww (parse + check + cgen
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* succeed; nothing to run).
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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 char *
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run6c(const char *bin, const char *src)
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{
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char path[64];
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snprintf(path, sizeof path, "/tmp/wwffi_%d.ww", getpid());
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FILE *f = fopen(path, "wb");
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fputs(src, f);
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fclose(f);
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char cmd[512];
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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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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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pclose(p);
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unlink(path);
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return buf;
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}
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int
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main(void)
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{
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const char *bin = getenv("BIN");
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if (!bin) bin = "out/bin";
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int fail = 0;
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/* @symbol redirects ident name to symbol name */
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{
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char *out = run6c(bin,
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"@symbol(\"cout\") fn writeit(b: *u8, n: u64) i64;\n"
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"fn main() i32 = { writeit(nil, 0); return 0; };");
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if (strstr(out, "CALL\tcout(SB)") == NULL) {
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fprintf(stderr, "ffi: missing CALL cout(SB) in:\n%s\n", out);
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fail++;
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}
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if (strstr(out, "CALL\twriteit(SB)") != NULL) {
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fprintf(stderr, "ffi: should not call by ident name:\n%s\n", out);
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fail++;
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}
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free(out);
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}
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/* lib/c/libc parses + cgens (no defined fns means no TEXT directives) */
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{
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char path[256];
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snprintf(path, sizeof path, "%s/../../lib/c/libc/libc.ww", bin);
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char cmd[512];
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snprintf(cmd, sizeof cmd, "%s/w6c %s > /dev/null 2>&1", bin, path);
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int rc = system(cmd);
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if (rc != 0) {
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fprintf(stderr, "ffi: w6c failed on libc.ww (rc=%d)\n", rc);
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fail++;
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}
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}
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if (fail) return 1;
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puts("ffi: ok");
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return 0;
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}
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