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.
68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
/*
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* 600_6l — linker smoke. Drive 6c → 6a → 6l 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/6c -o %s %s", bin, asmf, src);
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if (system(cmd) != 0) { fprintf(stderr, "6c failed\n"); return 1; }
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snprintf(cmd, sizeof cmd, "%s/6a -o %s %s", bin, obj, asmf);
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if (system(cmd) != 0) { fprintf(stderr, "6a failed\n"); return 1; }
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snprintf(cmd, sizeof cmd, "%s/6l -o %s %s", bin, exe, obj);
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if (system(cmd) != 0) { fprintf(stderr, "6l 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("6l: ok\n");
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return 0;
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}
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