diff options
Diffstat (limited to 'lib/libc/gen/_pthread_stubs.c')
| -rw-r--r-- | lib/libc/gen/_pthread_stubs.c | 303 |
1 files changed, 303 insertions, 0 deletions
diff --git a/lib/libc/gen/_pthread_stubs.c b/lib/libc/gen/_pthread_stubs.c new file mode 100644 index 0000000..a3e55b0 --- /dev/null +++ b/lib/libc/gen/_pthread_stubs.c @@ -0,0 +1,303 @@ +/* + * Copyright (c) 2001 Daniel Eischen <deischen@FreeBSD.org>. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY DANIEL EISCHEN AND CONTRIBUTORS ``AS IS'' + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <signal.h> +#include <pthread.h> +#include <stdlib.h> + +#include "libc_private.h" + +/* + * Weak symbols: All libc internal usage of these functions should + * use the weak symbol versions (_pthread_XXX). If libpthread is + * linked, it will override these functions with (non-weak) routines. + * The _pthread_XXX functions are provided solely for internal libc + * usage to avoid unwanted cancellation points and to differentiate + * between application locks and libc locks (threads holding the + * latter can't be allowed to exit/terminate). + */ + +/* Define a null pthread structure just to satisfy _pthread_self. */ +struct pthread { +}; + +static struct pthread main_thread; + +static int stub_main(void); +static void *stub_null(void); +static struct pthread *stub_self(void); +static int stub_zero(void); +static int stub_true(void); +static void stub_exit(void); + +#define PJT_DUAL_ENTRY(entry) \ + (pthread_func_t)entry, (pthread_func_t)entry + +pthread_func_entry_t __thr_jtable[PJT_MAX] = { + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATFORK */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_DESTROY */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_GETDETACHSTATE */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_GETGUARDSIZE */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_GETINHERITSCHED */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_GETSCHEDPARAM */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_GETSCHEDPOLICY */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_GETSCOPE */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_GETSTACKADDR */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_GETSTACKSIZE */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_INIT */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_SETDETACHSTATE */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_SETGUARDSIZE */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_SETINHERITSCHED */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_SETSCHEDPARAM */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_SETSCHEDPOLICY */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_SETSCOPE */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_SETSTACKADDR */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ATTR_SETSTACKSIZE */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_CANCEL */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_CLEANUP_POP */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_CLEANUP_PUSH */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_COND_BROADCAST */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_COND_DESTROY */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_COND_INIT */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_COND_SIGNAL */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_COND_TIMEDWAIT */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_COND_WAIT */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_DETACH */ + {PJT_DUAL_ENTRY(stub_true)}, /* PJT_EQUAL */ + {PJT_DUAL_ENTRY(stub_exit)}, /* PJT_EXIT */ + {PJT_DUAL_ENTRY(stub_null)}, /* PJT_GETSPECIFIC */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_JOIN */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_KEY_CREATE */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_KEY_DELETE */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_KILL */ + {PJT_DUAL_ENTRY(stub_main)}, /* PJT_MAIN_NP */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_MUTEXATTR_DESTROY */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_MUTEXATTR_INIT */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_MUTEXATTR_SETTYPE */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_MUTEX_DESTROY */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_MUTEX_INIT */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_MUTEX_LOCK */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_MUTEX_TRYLOCK */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_MUTEX_UNLOCK */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_ONCE */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_RWLOCK_DESTROY */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_RWLOCK_INIT */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_RWLOCK_RDLOCK */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_RWLOCK_TRYRDLOCK */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_RWLOCK_TRYWRLOCK */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_RWLOCK_UNLOCK */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_RWLOCK_WRLOCK */ + {PJT_DUAL_ENTRY(stub_self)}, /* PJT_SELF */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_SETCANCELSTATE */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_SETCANCELTYPE */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_SETSPECIFIC */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_SIGMASK */ + {PJT_DUAL_ENTRY(stub_zero)}, /* PJT_TESTCANCEL */ +}; + +/* + * Weak aliases for exported (pthread_*) and internal (_pthread_*) routines. + */ +#define WEAK_REF(sym, alias) __weak_reference(sym, alias) + +#define FUNC_TYPE(name) __CONCAT(name, _func_t) +#define FUNC_INT(name) __CONCAT(name, _int) +#define FUNC_EXP(name) __CONCAT(name, _exp) + +#define STUB_FUNC(name, idx, ret) \ + static ret FUNC_EXP(name)(void) __used; \ + static ret FUNC_INT(name)(void) __used; \ + WEAK_REF(FUNC_EXP(name), name); \ + WEAK_REF(FUNC_INT(name), __CONCAT(_, name)); \ + typedef ret (*FUNC_TYPE(name))(void); \ + static ret FUNC_EXP(name)(void) \ + { \ + FUNC_TYPE(name) func; \ + func = (FUNC_TYPE(name))__thr_jtable[idx][0]; \ + return (func()); \ + } \ + static ret FUNC_INT(name)(void) \ + { \ + FUNC_TYPE(name) func; \ + func = (FUNC_TYPE(name))__thr_jtable[idx][1]; \ + return (func()); \ + } + +#define STUB_FUNC1(name, idx, ret, p0_type) \ + static ret FUNC_EXP(name)(p0_type) __used; \ + static ret FUNC_INT(name)(p0_type) __used; \ + WEAK_REF(FUNC_EXP(name), name); \ + WEAK_REF(FUNC_INT(name), __CONCAT(_, name)); \ + typedef ret (*FUNC_TYPE(name))(p0_type); \ + static ret FUNC_EXP(name)(p0_type p0) \ + { \ + FUNC_TYPE(name) func; \ + func = (FUNC_TYPE(name))__thr_jtable[idx][0]; \ + return (func(p0)); \ + } \ + static ret FUNC_INT(name)(p0_type p0) \ + { \ + FUNC_TYPE(name) func; \ + func = (FUNC_TYPE(name))__thr_jtable[idx][1]; \ + return (func(p0)); \ + } + +#define STUB_FUNC2(name, idx, ret, p0_type, p1_type) \ + static ret FUNC_EXP(name)(p0_type, p1_type) __used; \ + static ret FUNC_INT(name)(p0_type, p1_type) __used; \ + WEAK_REF(FUNC_EXP(name), name); \ + WEAK_REF(FUNC_INT(name), __CONCAT(_, name)); \ + typedef ret (*FUNC_TYPE(name))(p0_type, p1_type); \ + static ret FUNC_EXP(name)(p0_type p0, p1_type p1) \ + { \ + FUNC_TYPE(name) func; \ + func = (FUNC_TYPE(name))__thr_jtable[idx][0]; \ + return (func(p0, p1)); \ + } \ + static ret FUNC_INT(name)(p0_type p0, p1_type p1) \ + { \ + FUNC_TYPE(name) func; \ + func = (FUNC_TYPE(name))__thr_jtable[idx][1]; \ + return (func(p0, p1)); \ + } + +#define STUB_FUNC3(name, idx, ret, p0_type, p1_type, p2_type) \ + static ret FUNC_EXP(name)(p0_type, p1_type, p2_type) __used; \ + static ret FUNC_INT(name)(p0_type, p1_type, p2_type) __used; \ + WEAK_REF(FUNC_EXP(name), name); \ + WEAK_REF(FUNC_INT(name), __CONCAT(_, name)); \ + typedef ret (*FUNC_TYPE(name))(p0_type, p1_type, p2_type); \ + static ret FUNC_EXP(name)(p0_type p0, p1_type p1, p2_type p2) \ + { \ + FUNC_TYPE(name) func; \ + func = (FUNC_TYPE(name))__thr_jtable[idx][0]; \ + return (func(p0, p1, p2)); \ + } \ + static ret FUNC_INT(name)(p0_type p0, p1_type p1, p2_type p2) \ + { \ + FUNC_TYPE(name) func; \ + func = (FUNC_TYPE(name))__thr_jtable[idx][1]; \ + return (func(p0, p1, p2)); \ + } + +STUB_FUNC1(pthread_cond_broadcast, PJT_COND_BROADCAST, int, void *) +STUB_FUNC1(pthread_cond_destroy, PJT_COND_DESTROY, int, void *) +STUB_FUNC2(pthread_cond_init, PJT_COND_INIT, int, void *, void *) +STUB_FUNC1(pthread_cond_signal, PJT_COND_SIGNAL, int, void *) +STUB_FUNC2(pthread_cond_wait, PJT_COND_WAIT, int, void *, void *) +STUB_FUNC1(pthread_getspecific, PJT_GETSPECIFIC, void *, pthread_key_t) +STUB_FUNC2(pthread_key_create, PJT_KEY_CREATE, int, void *, void *) +STUB_FUNC1(pthread_key_delete, PJT_KEY_DELETE, int, pthread_key_t) +STUB_FUNC(pthread_main_np, PJT_MAIN_NP, int) +STUB_FUNC1(pthread_mutex_destroy, PJT_MUTEX_DESTROY, int, void *) +STUB_FUNC2(pthread_mutex_init, PJT_MUTEX_INIT, int, void *, void *) +STUB_FUNC1(pthread_mutex_lock, PJT_MUTEX_LOCK, int, void *) +STUB_FUNC1(pthread_mutex_trylock, PJT_MUTEX_TRYLOCK, int, void *) +STUB_FUNC1(pthread_mutex_unlock, PJT_MUTEX_UNLOCK, int, void *) +STUB_FUNC1(pthread_mutexattr_destroy, PJT_MUTEXATTR_DESTROY, int, void *) +STUB_FUNC1(pthread_mutexattr_init, PJT_MUTEXATTR_INIT, int, void *) +STUB_FUNC1(pthread_mutexattr_settype, PJT_MUTEXATTR_SETTYPE, int, void *) +STUB_FUNC2(pthread_once, PJT_ONCE, int, void *, void *) +STUB_FUNC1(pthread_rwlock_destroy, PJT_RWLOCK_DESTROY, int, void *) +STUB_FUNC2(pthread_rwlock_init, PJT_RWLOCK_INIT, int, void *, void *) +STUB_FUNC1(pthread_rwlock_rdlock, PJT_RWLOCK_RDLOCK, int, void *) +STUB_FUNC1(pthread_rwlock_tryrdlock, PJT_RWLOCK_TRYRDLOCK, int, void *) +STUB_FUNC1(pthread_rwlock_trywrlock, PJT_RWLOCK_TRYWRLOCK, int, void *) +STUB_FUNC1(pthread_rwlock_unlock, PJT_RWLOCK_UNLOCK, int, void *) +STUB_FUNC1(pthread_rwlock_wrlock, PJT_RWLOCK_WRLOCK, int, void *) +STUB_FUNC(pthread_self, PJT_SELF, pthread_t) +STUB_FUNC2(pthread_setspecific, PJT_SETSPECIFIC, int, pthread_key_t, void *) +STUB_FUNC3(pthread_sigmask, PJT_SIGMASK, int, int, void *, void *) +STUB_FUNC3(pthread_atfork, PJT_ATFORK, int, void *, void *, void*) +STUB_FUNC1(pthread_attr_destroy, PJT_ATTR_DESTROY, int, void *); +STUB_FUNC2(pthread_attr_getdetachstate, PJT_ATTR_GETDETACHSTATE, int, void *, void *) +STUB_FUNC2(pthread_attr_getguardsize, PJT_ATTR_GETGUARDSIZE, int, void *, void *) +STUB_FUNC2(pthread_attr_getstackaddr, PJT_ATTR_GETSTACKADDR, int, void *, void *) +STUB_FUNC2(pthread_attr_getstacksize, PJT_ATTR_GETSTACKSIZE, int, void *, void *) +STUB_FUNC2(pthread_attr_getinheritsched, PJT_ATTR_GETINHERITSCHED, int, void *, void *) +STUB_FUNC2(pthread_attr_getschedparam, PJT_ATTR_GETSCHEDPARAM, int, void *, void *) +STUB_FUNC2(pthread_attr_getschedpolicy, PJT_ATTR_GETSCHEDPOLICY, int, void *, void *) +STUB_FUNC2(pthread_attr_getscope, PJT_ATTR_GETSCOPE, int, void *, void *) +STUB_FUNC1(pthread_attr_init, PJT_ATTR_INIT, int, void *) +STUB_FUNC2(pthread_attr_setdetachstate, PJT_ATTR_SETDETACHSTATE, int, void *, int) +STUB_FUNC2(pthread_attr_setguardsize, PJT_ATTR_SETGUARDSIZE, int, void *, size_t) +STUB_FUNC2(pthread_attr_setstackaddr, PJT_ATTR_SETSTACKADDR, int, void *, void *) +STUB_FUNC2(pthread_attr_setstacksize, PJT_ATTR_SETSTACKSIZE, int, void *, size_t) +STUB_FUNC2(pthread_attr_setinheritsched, PJT_ATTR_SETINHERITSCHED, int, void *, int) +STUB_FUNC2(pthread_attr_setschedparam, PJT_ATTR_SETSCHEDPARAM, int, void *, void *) +STUB_FUNC2(pthread_attr_setschedpolicy, PJT_ATTR_SETSCHEDPOLICY, int, void *, int) +STUB_FUNC2(pthread_attr_setscope, PJT_ATTR_SETSCOPE, int, void *, int) +STUB_FUNC1(pthread_cancel, PJT_CANCEL, int, void *) +STUB_FUNC1(pthread_cleanup_pop, PJT_CLEANUP_POP, int, int) +STUB_FUNC2(pthread_cleanup_push, PJT_CLEANUP_PUSH, void, void *, void *) +STUB_FUNC3(pthread_cond_timedwait, PJT_COND_TIMEDWAIT, int, void *, void *, void *) +STUB_FUNC1(pthread_detach, PJT_DETACH, int, void *) +STUB_FUNC2(pthread_equal, PJT_EQUAL, int, void *, void *) +STUB_FUNC1(pthread_exit, PJT_EXIT, void, void *) +STUB_FUNC2(pthread_join, PJT_JOIN, int, void *, void *) +STUB_FUNC2(pthread_kill, PJT_KILL, int, void *, int) +STUB_FUNC2(pthread_setcancelstate, PJT_SETCANCELSTATE, int, int, void *) +STUB_FUNC2(pthread_setcanceltype, PJT_SETCANCELTYPE, int, int, void *) +STUB_FUNC(pthread_testcancel, PJT_TESTCANCEL, void) + +static int +stub_zero(void) +{ + return (0); +} + +static void * +stub_null(void) +{ + return (NULL); +} + +static struct pthread * +stub_self(void) +{ + return (&main_thread); +} + +static int +stub_main(void) +{ + return (-1); +} + +static int +stub_true(void) +{ + return (1); +} + +static void +stub_exit(void) +{ + exit(0); +} |
