Hojun-Cho
eb6083e54a
The driver flip moves build artifacts from next-to-source <stem>.s to a .sepwork/ scratch dir. 29 Pattern-B gates now build `ww build --sep -o <stem>` and read <stem>.sepwork/__root.s (multi-package gates concat all <stem>.sepwork/*.s, since cross-package labels live in per-package .s). All intermediates redirect to /tmp (WW_PKGCACHE + -o), so the corpus runs parallel-safe with no source-tree pollution. Tests pass now (--sep is live) and survive the flip. 915 additionally retargeted off strconv's PRIVATE left_shift_table (a let, not export) — which separate compilation correctly hides — onto a test-local package that exports its own probe table (#96). The combined path only linked it via a single-unit private leak; encapsulation is now honored under sep. Test-only; all 5 *_ww binaries HOLD. 989_m1mangle_run deferred (blocked by #99, imported-package fn main mangling under sep).
130 lines
3.6 KiB
C
130 lines
3.6 KiB
C
/*
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* 996_dyn_ww — phase-8 marker for ET_DYN linking on the ww side.
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*
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* Drives w6l_ww with -L/-l flags over examples/mandelbrot/mandelbrot.o and diffs
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* the result against the C-built w6l on the same inputs. A green run
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* means the ww-side linker emits PT_INTERP/PT_DYNAMIC binaries byte-
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* for-byte identical to the C linker — i.e. the dynamic linking story
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* is fully ported.
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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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#include <sys/wait.h>
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static int
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runwait(const char *cmd)
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{
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int rc = system(cmd);
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if (rc == -1) return -1;
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if (WIFEXITED(rc)) return WEXITSTATUS(rc);
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return 1;
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}
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static const char *
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absbin(void)
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{
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const char *b = getenv("BIN");
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if (!b) b = "out/bin";
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if (b[0] == '/') return b;
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static char buf[2048];
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char cwd[1024];
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if (getcwd(cwd, sizeof cwd) == NULL) return NULL;
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snprintf(buf, sizeof buf, "%s/%s", cwd, b);
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return buf;
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}
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static int
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slurp(const char *path, char **outbuf, size_t *outlen)
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{
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FILE *f = fopen(path, "rb");
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if (!f) 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) { 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 = (size_t)n;
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return 0;
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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 = absbin();
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if (!bin) return 1;
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char cwd[1024];
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if (getcwd(cwd, sizeof cwd) == NULL) return 1;
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/* #93 sep layout: build the example via `ww build --sep` into a
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* private /tmp stem (NOT next to the tracked example source), then
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* link <stem>.sepwork/__root.o — the self-contained single-package
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* object the flip emits in place of the old next-to-source .o. */
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char cmd[4096], mbstem[256], mbobj[320];
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snprintf(mbstem, sizeof mbstem, "/tmp/wwld_%d_mb", getpid());
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snprintf(mbobj, sizeof mbobj, "%s.sepwork/__root.o", mbstem);
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snprintf(cmd, sizeof cmd,
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"cd %s/examples/mandelbrot && WW_PKGCACHE=%s.pkgc %s/ww build --sep "
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"-o %s mandelbrot.ww -L /usr/lib -l c >/dev/null 2>&1",
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cwd, mbstem, bin, mbstem);
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if (runwait(cmd) != 0) {
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fprintf(stderr, "w6l_ww-dyn FAIL: cannot build mandelbrot.o via C driver\n");
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return 1;
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}
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char co[64], wo[64];
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snprintf(co, sizeof co, "/tmp/wwld_%d_c", getpid());
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snprintf(wo, sizeof wo, "/tmp/wwld_%d_w", getpid());
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/* C-side w6l with the dynamic flags. */
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snprintf(cmd, sizeof cmd,
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"%s/w6l -o %s %s -L /usr/lib "
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"-l c %s/out/lib/libwwrt.a 2>/dev/null",
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bin, co, mbobj, cwd);
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if (runwait(cmd) != 0) {
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fprintf(stderr, "w6l_ww-dyn FAIL: C w6l errored\n");
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unlink(co);
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return 1;
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}
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/* ww-side w6l with the same flags. */
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snprintf(cmd, sizeof cmd,
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"%s/w6l_ww -o %s %s -L /usr/lib "
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"-l c %s/out/lib/libwwrt.a 2>/dev/null",
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bin, wo, mbobj, cwd);
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if (runwait(cmd) != 0) {
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fprintf(stderr, "w6l_ww-dyn FAIL: ww w6l errored\n");
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unlink(co); unlink(wo);
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return 1;
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}
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char *bc = NULL, *bw = NULL;
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size_t nc = 0, nw = 0;
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int rc = 0;
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if (slurp(co, &bc, &nc) < 0 || slurp(wo, &bw, &nw) < 0) {
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fprintf(stderr, "w6l_ww-dyn FAIL: cannot read outputs\n");
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rc = 1;
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} else if (nc != nw || memcmp(bc, bw, nc) != 0) {
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fprintf(stderr, "w6l_ww-dyn FAIL: C %zu vs ww %zu bytes\n",
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nc, nw);
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rc = 1;
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} else {
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printf("w6l_ww-dyn: byte-identical to C w6l on mandelbrot "
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"(PT_INTERP + PT_DYNAMIC + .rela.plt + .gnu.version_r, "
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"%zu bytes)\n", nc);
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}
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free(bc); free(bw);
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unlink(co); unlink(wo);
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/* #93: the sep scratch + tmpdir-pinned pkgcache. */
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snprintf(cmd, sizeof cmd, "rm -rf %s.sepwork %s.pkgc %s", mbstem, mbstem, mbstem);
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if (system(cmd)) {}
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return rc;
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}
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