mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
7e0a09feec
This change ports APE Loader to Linux AARCH64, so that Raspberry Pi users can run programs like redbean, without the executable needing to modify itself. Progress has also slipped into this change on the issue of making progress better conforming to user expectations and industry standards regarding which symbols we're allowed to declare
250 lines
8.4 KiB
C
250 lines
8.4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/assert.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/state.internal.h"
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#include "libc/calls/struct/sigaction.h"
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#include "libc/calls/struct/sigset.h"
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/fmt/fmt.h"
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#include "libc/fmt/itoa.h"
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#include "libc/intrin/atomic.h"
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#include "libc/intrin/kprintf.h"
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#include "libc/intrin/strace.internal.h"
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#include "libc/intrin/weaken.h"
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#include "libc/log/check.h"
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#include "libc/log/internal.h"
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#include "libc/macros.internal.h"
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#include "libc/nt/process.h"
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#include "libc/runtime/internal.h"
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#include "libc/runtime/runtime.h"
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#include "libc/runtime/symbols.internal.h"
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#include "libc/sock/sock.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/poll.h"
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#include "libc/sysv/consts/sa.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/sysv/consts/w.h"
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#include "libc/testlib/testlib.h"
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#include "libc/thread/thread.h"
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#include "libc/x/x.h"
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static int x;
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char g_testlib_olddir[PATH_MAX];
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char g_testlib_tmpdir[PATH_MAX];
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struct sigaction wanthandlers[31];
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static pthread_mutex_t testlib_error_lock;
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void testlib_finish(void) {
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if (g_testlib_failed) {
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kprintf("%u / %u %s\n", g_testlib_failed, g_testlib_ran, "tests failed");
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}
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}
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void testlib_error_enter(const char *file, const char *func) {
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ftrace_enabled(-1);
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strace_enabled(-1);
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pthread_mutex_lock(&testlib_error_lock);
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if (!IsWindows()) sys_getpid(); /* make strace easier to read */
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if (!IsWindows()) sys_getpid();
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if (g_testlib_shoulddebugbreak) {
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DebugBreak();
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}
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testlib_showerror_file = file;
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testlib_showerror_func = func;
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}
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void testlib_error_leave(void) {
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strace_enabled(+1);
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ftrace_enabled(+1);
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pthread_mutex_unlock(&testlib_error_lock);
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}
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wontreturn void testlib_abort(void) {
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testlib_finish();
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_Exitr(MAX(1, MIN(255, g_testlib_failed)));
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}
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static void SetupTmpDir(void) {
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char *p = g_testlib_tmpdir;
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p = stpcpy(p, kTmpPath);
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p = stpcpy(p, program_invocation_short_name), *p++ = '.';
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p = FormatInt64(p, getpid()), *p++ = '.';
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p = FormatInt64(p, x++);
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p[0] = '\0';
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CHECK_NE(-1, makedirs(g_testlib_tmpdir, 0755), "%s", g_testlib_tmpdir);
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CHECK_NOTNULL(realpath(g_testlib_tmpdir, g_testlib_tmpdir), "%`'s",
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g_testlib_tmpdir);
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CHECK_NE(-1, chdir(g_testlib_tmpdir), "%s", g_testlib_tmpdir);
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}
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static void TearDownTmpDir(void) {
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CHECK_NE(-1, chdir(g_testlib_olddir));
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CHECK_NE(-1, rmrf(g_testlib_tmpdir), "%s", g_testlib_tmpdir);
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}
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static void DoNothing(int sig) {
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// function intentionally empty
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}
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static void CopySignalHandlers(void) {
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#if 0
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int i;
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for (i = 0; i < ARRAYLEN(wanthandlers); ++i) {
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if (i + 1 == SIGKILL || i + 1 == SIGSTOP) continue;
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CHECK_EQ(0, sigaction(i + 1, 0, wanthandlers + i), "sig=%d", i + 1);
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}
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#endif
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}
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static void CheckSignalHandler(int sig) {
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#if 0
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int i;
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struct sigaction sa = {0};
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unassert(0 <= sig - 1 && sig - 1 < ARRAYLEN(wanthandlers));
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CHECK_EQ(0, sigaction(sig, 0, &sa));
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CHECK_EQ(0, memcmp(wanthandlers + sig - 1, &sa, sizeof(sa)),
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"signal handler for %s was %p/%#x/%#x:%x "
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"but should have been restored to %p/%#x/%#x:%x",
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strsignal(sig), sa.sa_handler, sa.sa_flags, sa.sa_mask.__bits[0],
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sa.sa_mask.__bits[1], wanthandlers[sig - 1].sa_handler,
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wanthandlers[sig - 1].sa_flags,
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wanthandlers[sig - 1].sa_mask.__bits[0],
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wanthandlers[sig - 1].sa_mask.__bits[1]);
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#endif
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}
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static void CheckForSignalHandlers(void) {
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#if 0
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CheckSignalHandler(SIGINT);
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CheckSignalHandler(SIGQUIT);
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CheckSignalHandler(SIGCHLD);
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CheckSignalHandler(SIGFPE);
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CheckSignalHandler(SIGILL);
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CheckSignalHandler(SIGSEGV);
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CheckSignalHandler(SIGTRAP);
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CheckSignalHandler(SIGABRT);
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CheckSignalHandler(SIGBUS);
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CheckSignalHandler(SIGSYS);
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CheckSignalHandler(SIGWINCH);
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#endif
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}
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static void CheckForFileDescriptors(void) {
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#if 0
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// TODO: race condition on fd cleanup :'(
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int i;
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struct pollfd pfds[16];
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if (!_weaken(open) && !_weaken(socket)) return;
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for (i = 0; i < ARRAYLEN(pfds); ++i) {
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pfds[i].fd = i + 3;
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pfds[i].events = POLLIN;
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}
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if (poll(pfds, ARRAYLEN(pfds), 0) > 0) {
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for (i = 0; i < ARRAYLEN(pfds); ++i) {
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if (pfds[i].revents & POLLNVAL) continue;
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++g_testlib_failed;
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kprintf("error: test failed to close() fd %d\n", pfds[i].fd);
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}
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}
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#endif
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}
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static void CheckForZombies(void) {
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#if 0
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int e, pid;
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sigset_t ss, oldss;
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struct sigaction oldsa;
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struct sigaction ignore = {.sa_handler = DoNothing};
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if (!_weaken(fork)) return;
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for (;;) {
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if ((pid = wait(0)) == -1) {
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CHECK_EQ(ECHILD, errno);
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break;
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} else {
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++g_testlib_failed;
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kprintf("error: test failed to reap zombies %d\n", pid);
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}
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}
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#endif
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}
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/**
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* Runs all test case functions in sorted order.
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*/
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void testlib_runtestcases(testfn_t *start, testfn_t *end, testfn_t warmup) {
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/*
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* getpid() calls are inserted to help visually see tests in traces
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* which can be performed on Linux, FreeBSD, OpenBSD, and XNU:
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*
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* strace -f o/default/test.com |& less
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* truss o/default/test.com |& less
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* ktrace -f trace o/default/test.com </dev/null; kdump -f trace | less
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* dtruss o/default/test.com |& less
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*
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* Test cases are iterable via a decentralized section. Your TEST()
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* macro inserts .testcase.SUITENAME sections into the binary which
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* the linker sorts into an array.
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*
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* @see ape/ape.lds
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*/
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const testfn_t *fn;
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CopySignalHandlers();
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if (_weaken(testlib_enable_tmp_setup_teardown) ||
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_weaken(testlib_enable_tmp_setup_teardown_once)) {
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CHECK_NOTNULL(getcwd(g_testlib_olddir, sizeof(g_testlib_olddir)));
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}
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if (_weaken(testlib_enable_tmp_setup_teardown_once)) {
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SetupTmpDir();
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}
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if (_weaken(SetUpOnce)) _weaken(SetUpOnce)();
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for (x = 0, fn = start; fn != end; ++fn) {
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STRACE("");
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STRACE("# setting up %t", fn);
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if (_weaken(testlib_enable_tmp_setup_teardown)) SetupTmpDir();
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if (_weaken(SetUp)) _weaken(SetUp)();
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errno = 0;
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if (IsWindows()) {
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SetLastError(0);
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}
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if (!IsWindows()) sys_getpid();
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if (warmup) warmup();
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testlib_clearxmmregisters();
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STRACE("");
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STRACE("# running test %t", fn);
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(*fn)();
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STRACE("");
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STRACE("# tearing down %t", fn);
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if (!IsWindows()) sys_getpid();
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if (_weaken(TearDown)) _weaken(TearDown)();
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if (_weaken(testlib_enable_tmp_setup_teardown)) TearDownTmpDir();
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CheckForFileDescriptors();
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CheckForSignalHandlers();
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CheckForZombies();
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}
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if (_weaken(TearDownOnce)) {
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_weaken(TearDownOnce)();
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}
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if (_weaken(testlib_enable_tmp_setup_teardown_once)) {
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TearDownTmpDir();
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}
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}
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