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- /* Support code for standard wait macros in gdb_wait.h.
- Copyright (C) 2019-2022 Free Software Foundation, Inc.
- This file is part of GDB.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
- #include "common-defs.h"
- #include "gdb_wait.h"
- #ifdef __MINGW32__
- /* The underlying idea is that when a Windows program is terminated by
- a fatal exception, its exit code is the value of that exception, as
- defined by the various EXCEPTION_* symbols in the Windows API
- headers. We thus emulate WTERMSIG etc. by translating the fatal
- exception codes to more-or-less equivalent Posix signals.
- The translation below is not perfect, because a program could
- legitimately exit normally with a status whose value happens to
- have the high bits set, but that's extremely rare, to say the
- least, and it is deemed such a negligibly small probability of
- false positives is justified by the utility of reporting the
- terminating signal in the "normal" cases. */
- # include <signal.h>
- # define WIN32_LEAN_AND_MEAN
- # include <windows.h> /* for EXCEPTION_* constants */
- struct xlate_status
- {
- /* The exit status (actually, fatal exception code). */
- DWORD status;
- /* The corresponding signal value. */
- int sig;
- };
- int
- windows_status_to_termsig (unsigned long status)
- {
- static const xlate_status status_xlate_tbl[] =
- {
- {EXCEPTION_ACCESS_VIOLATION, SIGSEGV},
- {EXCEPTION_IN_PAGE_ERROR, SIGSEGV},
- {EXCEPTION_INVALID_HANDLE, SIGSEGV},
- {EXCEPTION_ILLEGAL_INSTRUCTION, SIGILL},
- {EXCEPTION_NONCONTINUABLE_EXCEPTION, SIGILL},
- {EXCEPTION_ARRAY_BOUNDS_EXCEEDED, SIGSEGV},
- {EXCEPTION_FLT_DENORMAL_OPERAND, SIGFPE},
- {EXCEPTION_FLT_DIVIDE_BY_ZERO, SIGFPE},
- {EXCEPTION_FLT_INEXACT_RESULT, SIGFPE},
- {EXCEPTION_FLT_INVALID_OPERATION, SIGFPE},
- {EXCEPTION_FLT_OVERFLOW, SIGFPE},
- {EXCEPTION_FLT_STACK_CHECK, SIGFPE},
- {EXCEPTION_FLT_UNDERFLOW, SIGFPE},
- {EXCEPTION_INT_DIVIDE_BY_ZERO, SIGFPE},
- {EXCEPTION_INT_OVERFLOW, SIGFPE},
- {EXCEPTION_PRIV_INSTRUCTION, SIGILL},
- {EXCEPTION_STACK_OVERFLOW, SIGSEGV},
- {CONTROL_C_EXIT, SIGTERM}
- };
- for (const xlate_status &x : status_xlate_tbl)
- if (x.status == status)
- return x.sig;
- return -1;
- }
- #endif /* __MINGW32__ */
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