Hojun-Cho
1657bdeda3
C bootstrap (phases 0-9):
cmd/wwc, cmd/6c, cmd/6a, cmd/6l, cmd/ww, rt, lib/*.
ww-side self-host (phase 10):
selfhost/cmd/wwc — ww-cgen frontend; bootstrap fixed point.
selfhost/cmd/6a — assembler; byte-identical to C 6a (test 991).
selfhost/cmd/6l — linker w/ archive (.a) support; byte-identical
to C 6l (test 992).
selfhost/cmd/ww — driver (build/run/version); byte-identical to
C ww (test 993).
make test: 15/15. make bootstrap: ww2.s == ww3.s, ww2.o == ww3.o,
ww2 == ww3 byte-identical, with the full ww-tooled chain.
97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
/*
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* 610_arch — archive selectivity. Build two .o files into an archive
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* where one defines a symbol main needs, and the other references an
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* undefined external. Linking should pull only the needed member;
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* the other one's bad reference must NOT cause a link error.
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*
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* If 6l were still pulling all members, this test would fail with
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* "undefined reference to 'this_symbol_does_not_exist'".
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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/stat.h>
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#include <sys/wait.h>
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static int run(const char *cmd) { return system(cmd); }
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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 absbin[1024];
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if (bin[0] != '/') {
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char cwd[1024];
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if (getcwd(cwd, sizeof cwd) == NULL) return 1;
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snprintf(absbin, sizeof absbin, "%s/%s", cwd, bin);
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bin = absbin;
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}
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char dir[64];
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snprintf(dir, sizeof dir, "/tmp/wwarch_%d", getpid());
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mkdir(dir, 0755);
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/* lib_good.ww — defines f1() */
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char path[256];
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snprintf(path, sizeof path, "%s/lib_good.ww", dir);
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FILE *f = fopen(path, "wb");
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fputs("export fn f1() i32 = { return 7; };", f);
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fclose(f);
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/* lib_bad.ww — defines f2() but also references an undefined extern */
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snprintf(path, sizeof path, "%s/lib_bad.ww", dir);
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f = fopen(path, "wb");
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fputs("@symbol(\"this_symbol_does_not_exist\") fn bogus() i32;\n"
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"export fn f2() i32 = { return bogus(); };", f);
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fclose(f);
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/* main.ww — calls f1, NOT f2 */
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snprintf(path, sizeof path, "%s/m.ww", dir);
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f = fopen(path, "wb");
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fputs("@symbol(\"f1\") fn f1() i32;\n"
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"fn main() i32 = { return f1(); };", f);
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fclose(f);
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char cmd[2048];
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snprintf(cmd, sizeof cmd,
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"set -e; cd %s && %s/6c -o lib_good.s lib_good.ww && "
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"%s/6c -o lib_bad.s lib_bad.ww && "
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"%s/6a -o lib_good.o lib_good.s && %s/6a -o lib_bad.o lib_bad.s && "
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"ar rcs libfoo.a lib_good.o lib_bad.o && "
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"%s/6c -o m.s m.ww && %s/6a -o m.o m.s",
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dir, bin, bin, bin, bin, bin, bin);
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if (run(cmd) != 0) { fprintf(stderr, "build failed\n"); return 1; }
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/* Find start.o for the runtime */
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char startobj[256];
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snprintf(startobj, sizeof startobj, "%s/../obj/rt/start.o", bin);
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snprintf(cmd, sizeof cmd,
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"%s/6l -o %s/m %s/m.o %s %s/libfoo.a 2>%s/link.err",
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bin, dir, dir, startobj, dir, dir);
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if (run(cmd) != 0) {
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FILE *ef = fopen("/dev/null", "r");
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(void)ef;
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char errpath[300];
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snprintf(errpath, sizeof errpath, "%s/link.err", dir);
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FILE *e = fopen(errpath, "r");
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if (e) {
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char buf[512]; size_t r = fread(buf, 1, sizeof buf - 1, e); buf[r]='\0'; fclose(e);
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fprintf(stderr, "link failed:\n%s\n", buf);
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}
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return 1;
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}
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char exepath[256];
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snprintf(exepath, sizeof exepath, "%s/m", dir);
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int rc = run(exepath);
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if (WIFEXITED(rc) && WEXITSTATUS(rc) == 7) {
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printf("arch: ok (only needed archive member pulled)\n");
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return 0;
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}
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fprintf(stderr, "arch: unexpected exit\n");
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return 1;
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}
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