45 lines
1.9 KiB
C
45 lines
1.9 KiB
C
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#if 0
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/*─────────────────────────────────────────────────────────────────╗
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│ To the extent possible under law, Justine Tunney has waived │
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│ all copyright and related or neighboring rights to this file, │
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│ as it is written in the following disclaimers: │
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│ • http://unlicense.org/ │
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│ • http://creativecommons.org/publicdomain/zero/1.0/ │
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╚─────────────────────────────────────────────────────────────────*/
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#endif
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#include "libc/log/log.h"
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/**
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* Automatically launchs GDB Debugger TUI during crash.
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*
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* Run the following inside a terminal:
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*
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* sudo apt install gdb
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* make -j12 o//examples/auto-launch-gdb-on-crash.com
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* o//examples/auto-launch-gdb-on-crash.com
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*
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* Backtrace is logged instead if run outside interactive terminal.
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* Environmental factors such as GDB, MAKEFLAGS, ADDR2LINE, TERM, and
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* isatty(STDERR_FILENO) should also be taken into consideration:
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*
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* $ export GDB=eoatuhshtuone
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* $ o//examples/auto-launch-gdb-on-crash.com
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* error: Uncaught SIGTRAP
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* etc. etc.
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*
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* @see https://www.felixcloutier.com/x86/intn:into:int3:int1
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* @see https://en.wikipedia.org/wiki/INT_(x86_instruction)#INT3
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* @see examples and reference material on using the asm() keyword
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* - libc/nexgen32e/bsf.h
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* - libc/nexgen32e/tzcnt.h
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* - libc/nexgen32e/cpuid4.h
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* - libc/nexgen32e/tinystrcmp.h
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* - https://gist.github.com/jart/fe8d104ef93149b5ba9b72912820282c
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*/
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int main(int argc, char *argv[]) {
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showcrashreports();
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asm("int3"); /* cf. die(), perror("msg"), abort(), exit(1), _Exit(1) */
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return 0;
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}
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