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f79f206581
It is still used internally. Since unwinding is now available unconditionally, avoid indirect calls through function pointers loaded from the stack by inlining the non-cancellation cleanup code. This avoids a regression in security hardening. The out-of-line __libc_cleanup_routine implementation is no longer needed because the inline definition is now static __always_inline. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
85 lines
3.4 KiB
C
85 lines
3.4 KiB
C
/* Copyright (C) 2003-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _PTHREAD_FUNCTIONS_H
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#define _PTHREAD_FUNCTIONS_H 1
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#include <pthread.h>
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#include <setjmp.h>
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#include <internaltypes.h>
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#include <sysdep.h>
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struct xid_command;
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/* Data type shared with libc. The libc uses it to pass on calls to
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the thread functions. */
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struct pthread_functions
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{
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int (*ptr___pthread_cond_broadcast) (pthread_cond_t *);
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int (*ptr___pthread_cond_signal) (pthread_cond_t *);
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int (*ptr___pthread_cond_wait) (pthread_cond_t *, pthread_mutex_t *);
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int (*ptr___pthread_cond_timedwait) (pthread_cond_t *, pthread_mutex_t *,
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const struct timespec *);
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int (*ptr___pthread_cond_broadcast_2_0) (pthread_cond_2_0_t *);
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int (*ptr___pthread_cond_signal_2_0) (pthread_cond_2_0_t *);
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int (*ptr___pthread_cond_wait_2_0) (pthread_cond_2_0_t *, pthread_mutex_t *);
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int (*ptr___pthread_cond_timedwait_2_0) (pthread_cond_2_0_t *,
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pthread_mutex_t *,
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const struct timespec *);
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void (*ptr___pthread_exit) (void *) __attribute__ ((__noreturn__));
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int (*ptr_pthread_mutex_destroy) (pthread_mutex_t *);
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int (*ptr_pthread_mutex_init) (pthread_mutex_t *,
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const pthread_mutexattr_t *);
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int (*ptr_pthread_mutex_lock) (pthread_mutex_t *);
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int (*ptr_pthread_mutex_unlock) (pthread_mutex_t *);
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int (*ptr___pthread_setcancelstate) (int, int *);
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int (*ptr_pthread_setcanceltype) (int, int *);
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void (*ptr___pthread_cleanup_upto) (__jmp_buf, char *);
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int (*ptr___pthread_once) (pthread_once_t *, void (*) (void));
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int (*ptr___pthread_rwlock_rdlock) (pthread_rwlock_t *);
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int (*ptr___pthread_rwlock_wrlock) (pthread_rwlock_t *);
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int (*ptr___pthread_rwlock_unlock) (pthread_rwlock_t *);
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int (*ptr___pthread_key_create) (pthread_key_t *, void (*) (void *));
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void *(*ptr___pthread_getspecific) (pthread_key_t);
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int (*ptr___pthread_setspecific) (pthread_key_t, const void *);
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#define HAVE_PTR_NTHREADS
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unsigned int *ptr_nthreads;
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void (*ptr___pthread_unwind) (__pthread_unwind_buf_t *)
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__attribute ((noreturn)) __cleanup_fct_attribute;
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void (*ptr__nptl_deallocate_tsd) (void);
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int (*ptr__nptl_setxid) (struct xid_command *);
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void (*ptr_set_robust) (struct pthread *);
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};
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/* Variable in libc.so. */
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extern struct pthread_functions __libc_pthread_functions attribute_hidden;
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extern int __libc_pthread_functions_init attribute_hidden;
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#ifdef PTR_DEMANGLE
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# define PTHFCT_CALL(fct, params) \
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({ __typeof (__libc_pthread_functions.fct) __p; \
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__p = __libc_pthread_functions.fct; \
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PTR_DEMANGLE (__p); \
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__p params; })
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#else
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# define PTHFCT_CALL(fct, params) \
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__libc_pthread_functions.fct params
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#endif
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#endif /* pthread-functions.h */
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