mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
119 lines
4.6 KiB
C
119 lines
4.6 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2023 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/calls/calls.h"
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#include "libc/calls/ucontext.h"
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#include "libc/dce.h"
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#include "libc/intrin/kprintf.h"
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#include "libc/limits.h"
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#include "libc/math.h"
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#include "libc/mem/gc.h"
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#include "libc/nt/createfile.h"
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#include "libc/nt/enum/accessmask.h"
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#include "libc/nt/enum/creationdisposition.h"
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#include "libc/nt/enum/fileflagandattributes.h"
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#include "libc/nt/enum/filesharemode.h"
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#include "libc/runtime/runtime.h"
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#include "libc/runtime/stack.h"
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#include "libc/runtime/symbols.internal.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/testlib/subprocess.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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bool gotsome;
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ucontext_t uc, goback;
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extern long __klog_handle;
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void SetUpOnce(void) {
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testlib_enable_tmp_setup_teardown();
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}
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void check_args(long x0, long x1, long x2, long x3, long x4, long x5, double f0,
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double f1, double f2, double f3, double f4, double f5) {
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EXPECT_EQ(LONG_MIN + 100, x0);
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EXPECT_EQ(LONG_MIN + 101, x1);
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EXPECT_EQ(LONG_MIN + 102, x2);
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EXPECT_EQ(LONG_MIN + 103, x3);
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EXPECT_EQ(LONG_MIN + 104, x4);
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EXPECT_EQ(LONG_MIN + 105, x5);
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EXPECT_TRUE(20. == f0);
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EXPECT_TRUE(21. == f1);
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EXPECT_TRUE(22. == f2);
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EXPECT_TRUE(23. == f3);
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EXPECT_TRUE(24. == f4);
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EXPECT_TRUE(25. == f5);
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gotsome = true;
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}
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TEST(makecontext, args) {
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char stack[1024];
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getcontext(&uc);
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uc.uc_link = &goback;
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uc.uc_stack.ss_sp = stack;
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uc.uc_stack.ss_size = sizeof(stack);
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makecontext(&uc, check_args, 12, 20., 21., 22., LONG_MIN + 100,
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LONG_MIN + 101, LONG_MIN + 102, LONG_MIN + 103, LONG_MIN + 104,
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LONG_MIN + 105, 23., 24., 25.);
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swapcontext(&goback, &uc);
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EXPECT_TRUE(gotsome);
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}
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dontubsan void itsatrap(int x, int y) {
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*(int *)(intptr_t)x = scalbn(x, y);
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}
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TEST(makecontext, crash) {
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SPAWN(fork);
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getcontext(&uc);
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uc.uc_link = 0;
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uc.uc_stack.ss_sp = NewCosmoStack();
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uc.uc_stack.ss_size = GetStackSize();
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makecontext(&uc, exit, 1, 42);
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setcontext(&uc);
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EXITS(42);
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}
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TEST(makecontext, backtrace) {
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if (IsTiny())
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return; // doesn't print full crash report
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SPAWN(fork);
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if (IsWindows()) {
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__klog_handle =
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CreateFile(u"log", kNtFileAppendData,
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kNtFileShareRead | kNtFileShareWrite | kNtFileShareDelete, 0,
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kNtOpenAlways, kNtFileAttributeNormal, 0);
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} else {
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__klog_handle = creat("log", 0644);
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}
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getcontext(&uc);
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uc.uc_link = 0;
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uc.uc_stack.ss_sp = NewCosmoStack();
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uc.uc_stack.ss_size = GetStackSize();
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makecontext(&uc, itsatrap, 2, 123, 456);
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setcontext(&uc);
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TERMS(SIGSEGV);
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if (!GetSymbolTable())
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return;
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char *log = gc(xslurp("log", 0));
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EXPECT_NE(0, strstr(log, "itsatrap"));
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EXPECT_NE(0, strstr(log, "runcontext"));
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EXPECT_NE(0, strstr(log, "makecontext_backtrace"));
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}
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