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39bf41f4eb
- Python static hello world now 1.8mb
- Python static fully loaded now 10mb
- Python HTTPS client now uses MbedTLS
- Python REPL now completes import stmts
- Increase stack size for Python for now
- Begin synthesizing posixpath and ntpath
- Restore Python \N{UNICODE NAME} support
- Restore Python NFKD symbol normalization
- Add optimized code path for Intel SHA-NI
- Get more Python unit tests passing faster
- Get Python help() pagination working on NT
- Python hashlib now supports MbedTLS PBKDF2
- Make memcpy/memmove/memcmp/bcmp/etc. faster
- Add Mersenne Twister and Vigna to LIBC_RAND
- Provide privileged __printf() for error code
- Fix zipos opendir() so that it reports ENOTDIR
- Add basic chmod() implementation for Windows NT
- Add Cosmo's best functions to Python cosmo module
- Pin function trace indent depth to that of caller
- Show memory diagram on invalid access in MODE=dbg
- Differentiate stack overflow on crash in MODE=dbg
- Add stb_truetype and tools for analyzing font files
- Upgrade to UNICODE 13 and reduce its binary footprint
- COMPILE.COM now logs resource usage of build commands
- Start implementing basic poll() support on bare metal
- Set getauxval(AT_EXECFN) to GetModuleFileName() on NT
- Add descriptions to strerror() in non-TINY build modes
- Add COUNTBRANCH() macro to help with micro-optimizations
- Make error / backtrace / asan / memory code more unbreakable
- Add fast perfect C implementation of μ-Law and a-Law audio codecs
- Make strtol() functions consistent with other libc implementations
- Improve Linenoise implementation (see also github.com/jart/bestline)
- COMPILE.COM now suppresses stdout/stderr of successful build commands
177 lines
7.4 KiB
C
177 lines
7.4 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 2021 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/errno.h"
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#include "libc/log/log.h"
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#include "libc/mem/mem.h"
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#include "libc/runtime/gc.internal.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/append.internal.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/o.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/testlib/testlib.h"
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#include "libc/x/x.h"
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#include "net/http/escape.h"
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typedef char xmm_t __attribute__((__vector_size__(16)));
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noinline void ThisIsAnFpeCrash(void) {
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xmm_t v = {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
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0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf};
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volatile int x = 0;
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asm volatile("fldpi");
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asm volatile("mov\t%0,%%r15" : /* no outputs */ : "g"(0x3133731337));
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asm volatile("movaps\t%0,%%xmm15" : /* no outputs */ : "x"(v));
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fputc(7 / x, stdout);
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}
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void SetUp(void) {
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ShowCrashReports();
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if (__argc == 2 && !strcmp(__argv[1], "1")) {
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ThisIsAnFpeCrash();
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}
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}
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// error: Uncaught SIGFPE (FPE_INTDIV) on nightmare pid 11724
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// /home/jart/cosmo/o/dbg/test/libc/log/backtrace_test.com.tmp.11721
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// ENOTTY[25]
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// Linux nightmare SMP Thu, 12 Aug 2021 06:16:45 UTC
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//
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// 0x0000000000414659: ThisIsAnFpeCrash at test/libc/log/backtrace_test.c:35
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// 0x000000000045003b: testlib_runtestcases at libc/testlib/testrunner.c:98
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// 0x000000000044b770: testlib_runalltests at libc/testlib/runner.c:37
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// 0x000000000040278e: main at libc/testlib/testmain.c:86
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// 0x0000000000403210: cosmo at libc/runtime/cosmo.S:65
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// 0x0000000000402247: _start at libc/crt/crt.S:67
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//
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// RAX 0000000000000007 RBX 00006fffffffff10 RDI 00007ffe0745fde1 ST(0) 0.0
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// RCX 0000000000000000 RDX 0000000000000000 RSI 0000000000489900 ST(1) 0.0
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// RBP 00006fffffffff70 RSP 00006fffffffff10 RIP 000000000041465a ST(2) 0.0
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// R8 0000000000000001 R9 00006ffffffffcc0 R10 00006ffffffffe60 ST(3) 0.0
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// R11 000000000000000d R12 00000dffffffffe2 R13 00006fffffffff10 ST(4) 0.0
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// R14 0000000000000003 R15 000000000049b700 VF PF ZF IF
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//
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// XMM0 00000000000000000000000000000000 XMM8 00000000000000000000000000000000
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// XMM1 000000008000000400000000004160ea XMM9 00000000000000000000000000000000
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// XMM2 00000000000000000000000000000000 XMM10 00000000000000000000000000000000
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// XMM3 00000000000000000000000000000000 XMM11 00000000000000000000000000000000
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// XMM4 00000000000000000000000000000000 XMM12 00000000000000000000000000000000
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// XMM5 00000000000000000000000000000000 XMM13 00000000000000000000000000000000
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// XMM6 00000000000000000000000000000000 XMM14 00000000000000000000000000000000
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// XMM7 00000000000000000000000000000000 XMM15 00000000000000000000000000000000
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//
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// mm->i == 4;
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// mm->p[ 0]=={0x00008007,0x00008008,-1,3,50}; /* 2 */
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// /* 234,881,012 */
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// mm->p[ 1]=={0x0e007ffd,0x0e007fff,-1,3,50}; /* 3 */
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// /* 33,538,280 */
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// mm->p[ 2]=={0x100040e8,0x100040e8,-1,3,50}; /* 1 */
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// /* 1,610,596,103 */
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// mm->p[ 3]=={0x6ffffff0,0x6fffffff,12884901888,306,0}; /* 16 */
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// /* 22 frames mapped w/ 1,879,015,395 frames gapped */
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//
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// 00400000-0045b000 r-xp 00000000 08:03 4587526
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// /home/jart/cosmo/o/dbg/test/libc/log/backtrace_test.com.tmp.11721
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// 0045b000-00461000 rw-p 0005b000 08:03 4587526
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// /home/jart/cosmo/o/dbg/test/libc/log/backtrace_test.com.tmp.11721
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// 00461000-004a0000 rw-p 00000000 00:00 0
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// 80070000-80090000 rw-p 00000000 00:00 0
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// e007ffd0000-e0080000000 rw-p 00000000 00:00 0
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// 100040e80000-100040e90000 rw-p 00000000 00:00 0
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// 6ffffff00000-700000000000 rw-p 00000000 00:00 0
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// 7ffe0743f000-7ffe07460000 rw-p 00000000 00:00 0 [stack]
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// 7ffe075a8000-7ffe075ab000 r--p 00000000 00:00 0 [vvar]
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// 7ffe075ab000-7ffe075ac000 r-xp 00000000 00:00 0 [vdso]
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//
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// /home/jart/cosmo/o/dbg/test/libc/log/backtrace_test.com.tmp.11721 1
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TEST(ShowCrashReports, testDivideByZero) {
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size_t got;
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ssize_t rc;
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int ws, pid, fds[2];
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char *output, buf[512];
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ASSERT_NE(-1, pipe2(fds, O_CLOEXEC));
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ASSERT_NE(-1, (pid = vfork()));
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if (!pid) {
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dup2(fds[1], 1);
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dup2(fds[1], 2);
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execv(program_executable_name,
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(char *const[]){program_executable_name, "1", 0});
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_exit(127);
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}
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close(fds[1]);
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output = 0;
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appends(&output, "");
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for (;;) {
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rc = read(fds[0], buf, sizeof(buf));
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if (rc == -1) {
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ASSERT_EQ(EINTR, errno);
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continue;
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}
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if ((got = rc)) {
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appendd(&output, buf, got);
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} else {
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break;
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}
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}
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ASSERT_NE(-1, wait(&ws));
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EXPECT_TRUE(WIFEXITED(ws));
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EXPECT_EQ(128 + SIGFPE, WEXITSTATUS(ws));
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/* NULL is stopgap until we can copy symbol tablces into binary */
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if (!strstr(output, "ThisIsAnFpeCrash") && !strstr(output, "NULL")) {
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fprintf(stderr, "ERROR: crash report didn't have backtrace\n%s\n",
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gc(IndentLines(output, -1, 0, 4)));
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exit(1);
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}
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if (!strstr(output, gc(xasprintf("%d", pid)))) {
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fprintf(stderr, "ERROR: crash report didn't have pid\n%s\n",
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gc(IndentLines(output, -1, 0, 4)));
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exit(1);
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}
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if (!strstr(output, "SIGFPE")) {
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fprintf(stderr, "ERROR: crash report didn't have signal name\n%s\n",
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gc(IndentLines(output, -1, 0, 4)));
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exit(1);
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}
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if (!strstr(output, "3.141")) {
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fprintf(stderr, "ERROR: crash report didn't have fpu register\n%s\n",
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gc(IndentLines(output, -1, 0, 4)));
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exit(1);
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}
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if (!strstr(output, "0f0e0d0c0b0a09080706050403020100")) {
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fprintf(stderr, "ERROR: crash report didn't have sse register\n%s\n",
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gc(IndentLines(output, -1, 0, 4)));
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exit(1);
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}
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if (!strstr(output, "3133731337")) {
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fprintf(stderr, "ERROR: crash report didn't have general register\n%s\n",
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gc(IndentLines(output, -1, 0, 4)));
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exit(1);
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}
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free(output);
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}
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