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Diffstat (limited to 'hurd/catch-exc.c')
| -rw-r--r-- | hurd/catch-exc.c | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/hurd/catch-exc.c b/hurd/catch-exc.c deleted file mode 100644 index 1a4fa95c9f..0000000000 --- a/hurd/catch-exc.c +++ /dev/null @@ -1,131 +0,0 @@ -/* Copyright (C) 1994-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <mach/exc_server.h> -#include <hurd/signal.h> -#include <assert.h> - -/* Called by the microkernel when a thread gets an exception. */ - -kern_return_t -_S_catch_exception_raise (mach_port_t port, - thread_t thread, - task_t task, -#ifdef EXC_MASK_ALL /* New interface flavor. */ - exception_type_t exception, - exception_data_t code, - mach_msg_type_number_t codeCnt -#else /* Vanilla Mach 3.0 interface. */ - integer_t exception, - integer_t code, integer_t subcode -#endif - ) -{ - struct hurd_sigstate *ss; - int signo; - struct hurd_signal_detail d; - - if (task != __mach_task_self ()) - /* The sender wasn't the kernel. */ - return EPERM; - - d.exc = exception; -#ifdef EXC_MASK_ALL - assert (codeCnt >= 2); - d.exc_code = code[0]; - d.exc_subcode = code[1]; -#else - d.exc_code = code; - d.exc_subcode = subcode; -#endif - - /* Call the machine-dependent function to translate the Mach exception - codes into a signal number and subcode. */ - _hurd_exception2signal (&d, &signo); - - /* Find the sigstate structure for the faulting thread. */ - __mutex_lock (&_hurd_siglock); - for (ss = _hurd_sigstates; ss != NULL; ss = ss->next) - if (ss->thread == thread) - break; - __mutex_unlock (&_hurd_siglock); - if (ss == NULL) - ss = _hurd_thread_sigstate (thread); /* Allocate a fresh one. */ - - if (__spin_lock_locked (&ss->lock)) - { - /* Loser. The thread faulted with its sigstate lock held. Its - sigstate data is now suspect. So we reset the parts of it which - could cause trouble for the signal thread. Anything else - clobbered therein will just hose this user thread, but it's - faulting already. - - This is almost certainly a library bug: unless random memory - clobberation caused the sigstate lock to gratuitously appear held, - no code should do anything that can fault while holding the - sigstate lock. */ - - __spin_unlock (&ss->critical_section_lock); - ss->context = NULL; - __spin_unlock (&ss->lock); - } - - /* Post the signal. */ - _hurd_internal_post_signal (ss, signo, &d, - MACH_PORT_NULL, MACH_MSG_TYPE_PORT_SEND, - 0); - - return KERN_SUCCESS; -} - -#ifdef EXC_MASK_ALL -/* XXX New interface flavor has additional RPCs that we could be using - instead. These RPCs roll a thread_get_state/thread_set_state into - the message, so the signal thread ought to use these to save some calls. - */ -kern_return_t -_S_catch_exception_raise_state (mach_port_t port, - exception_type_t exception, - exception_data_t code, - mach_msg_type_number_t codeCnt, - int *flavor, - thread_state_t old_state, - mach_msg_type_number_t old_stateCnt, - thread_state_t new_state, - mach_msg_type_number_t *new_stateCnt) -{ - abort (); - return KERN_FAILURE; -} - -kern_return_t -_S_catch_exception_raise_state_identity (mach_port_t exception_port, - thread_t thread, - task_t task, - exception_type_t exception, - exception_data_t code, - mach_msg_type_number_t codeCnt, - int *flavor, - thread_state_t old_state, - mach_msg_type_number_t old_stateCnt, - thread_state_t new_state, - mach_msg_type_number_t *new_stateCnt) -{ - abort (); - return KERN_FAILURE; -} -#endif |