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.
68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
/*
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* 600_6l — linker smoke. Drive w6c → w6a → w6l on a tiny program,
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* confirm the result is a static ELF executable with no PT_INTERP.
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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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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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char src[64], asmf[64], obj[64], exe[64];
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snprintf(src, sizeof src, "/tmp/wwt_%d.ww", getpid());
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snprintf(asmf, sizeof asmf, "/tmp/wwt_%d.s", getpid());
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snprintf(obj, sizeof obj, "/tmp/wwt_%d.o", getpid());
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snprintf(exe, sizeof exe, "/tmp/wwt_%d.x", getpid());
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FILE *f = fopen(src, "wb");
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fputs("fn main() i32 = { return 42; };", f);
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fclose(f);
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char cmd[1024];
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snprintf(cmd, sizeof cmd, "%s/w6c -o %s %s", bin, asmf, src);
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if (system(cmd) != 0) { fprintf(stderr, "w6c failed\n"); return 1; }
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snprintf(cmd, sizeof cmd, "%s/w6a -o %s %s", bin, obj, asmf);
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if (system(cmd) != 0) { fprintf(stderr, "w6a failed\n"); return 1; }
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snprintf(cmd, sizeof cmd, "%s/w6l -o %s %s", bin, exe, obj);
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if (system(cmd) != 0) { fprintf(stderr, "w6l failed\n"); return 1; }
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/* validate ELF magic + e_type=EXEC */
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FILE *of = fopen(exe, "rb");
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if (of == NULL) { fprintf(stderr, "exe missing\n"); return 1; }
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unsigned char hdr[20];
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if (fread(hdr, 1, sizeof hdr, of) != sizeof hdr) { fprintf(stderr, "short exe\n"); fclose(of); return 1; }
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fclose(of);
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if (memcmp(hdr, "\x7f""ELF", 4) != 0 || hdr[4] != 2) {
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fprintf(stderr, "not an ELF64\n"); return 1;
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}
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/* e_type at offset 16, little-endian u16; ET_EXEC = 2 */
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unsigned short etype = (unsigned short)hdr[16] | ((unsigned short)hdr[17] << 8);
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if (etype != 2) {
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fprintf(stderr, "not ET_EXEC, got %u\n", etype); return 1;
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}
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/* ldd "not a dynamic executable" — proxy: check that file is not
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* dynamic by looking for PT_INTERP. We have none, so ldd reports
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* "not a dynamic executable" or similar. */
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snprintf(cmd, sizeof cmd, "ldd %s 2>&1", exe);
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FILE *p = popen(cmd, "r");
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char buf[256] = {0};
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fread(buf, 1, sizeof buf - 1, p);
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pclose(p);
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if (strstr(buf, "not a dynamic executable") == NULL
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&& strstr(buf, "statically linked") == NULL) {
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fprintf(stderr, "ldd says not static: %s\n", buf);
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return 1;
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}
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unlink(src); unlink(asmf); unlink(obj); unlink(exe);
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printf("w6l: ok\n");
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return 0;
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}
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