diff options
Diffstat (limited to 'csu')
| -rw-r--r-- | csu/Makefile | 30 | ||||
| -rw-r--r-- | csu/check_fds.c | 102 | ||||
| -rw-r--r-- | csu/dso_handle.c | 5 | ||||
| -rw-r--r-- | csu/elf-init.c | 59 | ||||
| -rw-r--r-- | csu/errno.c | 53 | ||||
| -rw-r--r-- | csu/init-first.c | 59 | ||||
| -rw-r--r-- | csu/libc-start.c | 263 | ||||
| -rw-r--r-- | csu/libc-tls.c | 263 | ||||
| -rw-r--r-- | csu/munch-tmpl.c (renamed from csu/errno-loc.c) | 33 | ||||
| -rw-r--r-- | csu/munch.awk | 11 | ||||
| -rw-r--r-- | csu/start.c | 13 | ||||
| -rw-r--r-- | csu/sysdep.c | 2 | ||||
| -rw-r--r-- | csu/version.c | 4 |
13 files changed, 73 insertions, 824 deletions
diff --git a/csu/Makefile b/csu/Makefile index 0e2ae07..fbbfe00 100644 --- a/csu/Makefile +++ b/csu/Makefile @@ -1,5 +1,5 @@ # Makefile for csu code for GNU C library. -# Copyright (C) 1995-2004, 2005, 2006 Free Software Foundation, Inc. +# Copyright (C) 1995-2003, 2004 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 @@ -39,8 +39,8 @@ omit-deps = $(patsubst %.o,%,$(start-installed-name) g$(start-installed-name) \ b$(start-installed-name) $(csu-dummies) \ S$(start-installed-name)) install-lib = $(start-installed-name) g$(start-installed-name) $(csu-dummies) -distribute = initfini.c gmon-start.c start.c defs.awk \ - abi-note.S init.c c not-cancel.h +distribute = initfini.c gmon-start.c start.c defs.awk munch.awk \ + abi-note.S init.c munch-tmpl.c not-cancel.h generated = version-info.h before-compile = $(objpfx)version-info.h @@ -54,13 +54,11 @@ include ../Makeconfig ifeq (yes,$(build-shared)) extra-objs += S$(start-installed-name) install-lib += S$(start-installed-name) -generated += start.os endif ifeq (yes,$(build-bounded)) extra-objs += b$(start-installed-name) install-lib += b$(start-installed-name) -generated += start.ob endif ifneq ($(start-installed-name),$(static-start-installed-name)) @@ -75,6 +73,19 @@ before-compile += $(objpfx)abi-tag.h generated += abi-tag.h endif +ifneq (yes,$(gnu-ld)) +libc-init = munch-init +$(objpfx)munch-init.c: munch.awk munch-tmpl.c $(+subdir_inits) + $(AWK) -f $< subdirs='$(+init_subdirs)' $(word 2,$^) > $@-t + mv -f $@-t $@ +generated += munch-init.c + +# All initialization source files. ++subdir_inits := $(wildcard $(foreach dir,$(subdirs),$(dir)/init-$(dir).c)) +# All subdirectories containing initialization source files. ++init_subdirs := $(patsubst %/,%,$(dir $(+subdir_inits))) +endif + ifeq ($(have-initfini),yes) CPPFLAGS += -DHAVE_INITFINI @@ -95,7 +106,7 @@ $(crtstuff:%=$(objpfx)%.o): %.o: %.S $(objpfx)defs.h CFLAGS-initfini.s = -g0 -fPIC -fno-inline-functions $(fno-unit-at-a-time) -vpath initfini.c $(sysdirs) +vpath initfini.c $(full_config_sysdirs) $(objpfx)initfini.s: initfini.c $(before-compile) $(compile.c) -S $(CFLAGS-initfini.s) -finhibit-size-directive \ @@ -200,9 +211,8 @@ $(objpfx)abi-tag.h: $(..)abi-tags if test -r $@.new; then mv -f $@.new $@; \ else echo >&2 'This configuration not matched in $<'; exit 1; fi -all-Banner-files = $(wildcard $(addsuffix /Banner,\ - $(sort $(subdir-srcdirs) \ - $(sysdeps-srcdirs)))) +all-Banner-files = $(wildcard $(addsuffix /Banner, \ + $(addprefix $(..), $(subdirs)))) $(objpfx)version-info.h: $(common-objpfx)config.make $(all-Banner-files) $(make-target-directory) (case $(config-os) in \ @@ -229,7 +239,7 @@ $(objpfx)version-info.h: $(common-objpfx)config.make $(all-Banner-files) esac; \ files="$(all-Banner-files)"; \ if test -n "$$files"; then \ - printf '"Available extensions:\\n"\n'; \ + echo "\"Available extensions:\\n\""; \ sed -e '/^#/d' -e 's/^[[:space:]]*/ /' \ -e 's/^\(.*\)$$/\"\1\\n\"/' $$files; \ fi) > $@T diff --git a/csu/check_fds.c b/csu/check_fds.c deleted file mode 100644 index 10ba3da..0000000 --- a/csu/check_fds.c +++ /dev/null @@ -1,102 +0,0 @@ -/* Copyright (C) 2000, 2002, 2003, 2005 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <errno.h> -#include <fcntl.h> -#include <paths.h> -#include <unistd.h> -#include <sys/stat.h> -#include <sys/sysmacros.h> - -/* Try to get a machine dependent instruction which will make the - program crash. This is used in case everything else fails. */ -#include <abort-instr.h> -#ifndef ABORT_INSTRUCTION -/* No such instruction is available. */ -# define ABORT_INSTRUCTION -#endif - -#include <device-nrs.h> -#include <not-cancel.h> - - -/* Should other OSes (e.g., Hurd) have different versions which can - be written in a better way? */ -static void -check_one_fd (int fd, int mode) -{ - /* Note that fcntl() with this parameter is not a cancellation point. */ - if (__builtin_expect (__libc_fcntl (fd, F_GETFD), 0) == -1 - && errno == EBADF) - { - const char *name; - dev_t dev; - - /* For writable descriptors we use /dev/full. */ - if ((mode & O_ACCMODE) == O_WRONLY) - { - name = _PATH_DEV "full"; - dev = makedev (DEV_FULL_MAJOR, DEV_FULL_MINOR); - } - else - { - name = _PATH_DEVNULL; - dev = makedev (DEV_NULL_MAJOR, DEV_NULL_MINOR); - } - - /* Something is wrong with this descriptor, it's probably not - opened. Open /dev/null so that the SUID program we are - about to start does not accidently use this descriptor. */ - int nullfd = open_not_cancel (name, mode, 0); - - /* We are very paranoid here. With all means we try to ensure - that we are actually opening the /dev/null device and nothing - else. - - Note that the following code assumes that STDIN_FILENO, - STDOUT_FILENO, STDERR_FILENO are the three lowest file - decsriptor numbers, in this order. */ - struct stat64 st; - if (__builtin_expect (nullfd != fd, 0) - || __builtin_expect (__fxstat64 (_STAT_VER, fd, &st), 0) != 0 - || __builtin_expect (S_ISCHR (st.st_mode), 1) == 0 - || st.st_rdev != dev) - /* We cannot even give an error message here since it would - run into the same problems. */ - while (1) - /* Try for ever and ever. */ - ABORT_INSTRUCTION; - } -} - - -void -__libc_check_standard_fds (void) -{ - /* This is really paranoid but some people actually are. If /dev/null - should happen to be a symlink to somewhere else and not the device - commonly known as "/dev/null" we bail out. We can detect this with - the O_NOFOLLOW flag for open() but only on some system. */ -#ifndef O_NOFOLLOW -# define O_NOFOLLOW 0 -#endif - /* Check all three standard file descriptors. */ - check_one_fd (STDIN_FILENO, O_WRONLY | O_NOFOLLOW); - check_one_fd (STDOUT_FILENO, O_RDONLY | O_NOFOLLOW); - check_one_fd (STDERR_FILENO, O_RDONLY | O_NOFOLLOW); -} diff --git a/csu/dso_handle.c b/csu/dso_handle.c index fd295f2..04ed078 100644 --- a/csu/dso_handle.c +++ b/csu/dso_handle.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2005 Free Software Foundation, Inc. +/* Copyright (C) 2002 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 @@ -18,5 +18,4 @@ /* We have to define __dso_handle ourselves since we do not use gcc's crtbegin files. */ -const void *const __dso_handle __attribute__ ((__visibility__ ("hidden"))) - = &__dso_handle; +void *__dso_handle __attribute__ ((__visibility__ ("hidden"))) = &__dso_handle; diff --git a/csu/elf-init.c b/csu/elf-init.c index d0a518f..d4e0b3f 100644 --- a/csu/elf-init.c +++ b/csu/elf-init.c @@ -1,5 +1,5 @@ /* Startup support for ELF initializers/finalizers in the main executable. - Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc. + Copyright (C) 2002, 2003 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 @@ -36,37 +36,16 @@ #include <stddef.h> - +#ifdef HAVE_INITFINI_ARRAY /* These magic symbols are provided by the linker. */ -extern void (*__preinit_array_start []) (int, char **, char **) - attribute_hidden; -extern void (*__preinit_array_end []) (int, char **, char **) - attribute_hidden; -extern void (*__init_array_start []) (int, char **, char **) - attribute_hidden; -extern void (*__init_array_end []) (int, char **, char **) - attribute_hidden; +extern void (*__preinit_array_start []) (void) attribute_hidden; +extern void (*__preinit_array_end []) (void) attribute_hidden; +extern void (*__init_array_start []) (void) attribute_hidden; +extern void (*__init_array_end []) (void) attribute_hidden; extern void (*__fini_array_start []) (void) attribute_hidden; extern void (*__fini_array_end []) (void) attribute_hidden; - -#if defined HAVE_VISIBILITY_ATTRIBUTE \ - && (defined SHARED || defined LIBC_NONSHARED) -# define hidden_undef_2(x) #x -# define hidden_undef_1(x) hidden_undef_2 (x) -# define hidden_undef(x) \ - __asm (hidden_undef_1 (ASM_GLOBAL_DIRECTIVE) " " #x); \ - __asm (".hidden " #x); -#else -# define hidden_undef(x) #endif -hidden_undef (__preinit_array_start) -hidden_undef (__preinit_array_end) -hidden_undef (__init_array_start) -hidden_undef (__init_array_end) -hidden_undef (__fini_array_start) -hidden_undef (__fini_array_end) - /* These function symbols are provided for the .init/.fini section entry points automagically by the linker. */ extern void _init (void); @@ -78,39 +57,43 @@ extern void _fini (void); the libc.a module in that it doesn't call the preinit array. */ void -__libc_csu_init (int argc, char **argv, char **envp) +__libc_csu_init (void) { +#ifdef HAVE_INITFINI_ARRAY /* For dynamically linked executables the preinit array is executed by the dynamic linker (before initializing any shared object. */ -#ifndef LIBC_NONSHARED +# ifndef LIBC_NONSHARED /* For static executables, preinit happens rights before init. */ { const size_t size = __preinit_array_end - __preinit_array_start; size_t i; for (i = 0; i < size; i++) - (*__preinit_array_start [i]) (argc, argv, envp); + (*__preinit_array_start [i]) (); } +# endif #endif _init (); - const size_t size = __init_array_end - __init_array_start; - for (size_t i = 0; i < size; i++) - (*__init_array_start [i]) (argc, argv, envp); +#ifdef HAVE_INITFINI_ARRAY + { + const size_t size = __init_array_end - __init_array_start; + size_t i; + for (i = 0; i < size; i++) + (*__init_array_start [i]) (); + } +#endif } -/* This function should not be used anymore. We run the executable's - destructor now just like any other. We cannot remove the function, - though. */ void __libc_csu_fini (void) { -#ifndef LIBC_NONSHARED +#ifdef HAVE_INITFINI_ARRAY size_t i = __fini_array_end - __fini_array_start; while (i-- > 0) (*__fini_array_start [i]) (); +#endif _fini (); -#endif } diff --git a/csu/errno.c b/csu/errno.c deleted file mode 100644 index 03d661b..0000000 --- a/csu/errno.c +++ /dev/null @@ -1,53 +0,0 @@ -/* Definition of `errno' variable. Canonical version. - Copyright (C) 2002, 2004 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <errno.h> -#include <tls.h> -#include <dl-sysdep.h> -#undef errno - -#if RTLD_PRIVATE_ERRNO - -/* Code compiled for rtld refers only to this name. */ -int rtld_errno attribute_hidden; - -#elif USE___THREAD - -__thread int errno; -extern __thread int __libc_errno __attribute__ ((alias ("errno"))) - attribute_hidden; - -#else - -/* This differs from plain `int errno;' in that it doesn't create - a common definition, but a plain symbol that resides in .bss, - which can have an alias. */ -int errno __attribute__ ((nocommon)); -strong_alias (errno, _errno) - -/* We declare these with compat_symbol so that they are not visible at - link time. Programs must use the accessor functions. RTLD is special, - since it's not exported from there at any time. */ -# if defined HAVE_ELF && defined SHARED && defined DO_VERSIONING -# include <shlib-compat.h> -compat_symbol (libc, errno, errno, GLIBC_2_0); -compat_symbol (libc, _errno, _errno, GLIBC_2_0); -# endif - -#endif diff --git a/csu/init-first.c b/csu/init-first.c deleted file mode 100644 index fa21274..0000000 --- a/csu/init-first.c +++ /dev/null @@ -1,59 +0,0 @@ -/* Initialization code run first thing by the ELF startup code. Stub version. - Copyright (C) 1995, 1997, 1998, 2001, 2002 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <unistd.h> -#include <sys/types.h> - -/* Set nonzero if we have to be prepared for more then one libc being - used in the process. Safe assumption if initializer never runs. */ -int __libc_multiple_libcs attribute_hidden = 1; - -extern void __libc_init (int, char **, char **); -#ifdef USE_NONOPTION_FLAGS -extern void __getopt_clean_environment (char **); -#endif - -#ifdef SHARED -void -__libc_init_first (void) -{ -} -#endif - -#ifdef SHARED -/* NOTE! The linker notices the magical name `_init' and sets the DT_INIT - pointer in the dynamic section based solely on that. It is convention - for this function to be in the `.init' section, but the symbol name is - the only thing that really matters!! */ -void _init -#else -void __libc_init_first -#endif -(int argc, char *arg0, ...) -{ - char **argv = &arg0, **envp = &argv[argc + 1]; - - __environ = envp; - __libc_init (argc, argv, envp); - -#ifdef USE_NONOPTION_FLAGS - /* This is a hack to make the special getopt in GNU libc working. */ - __getopt_clean_environment (envp); -#endif -} diff --git a/csu/libc-start.c b/csu/libc-start.c deleted file mode 100644 index 194db6b..0000000 --- a/csu/libc-start.c +++ /dev/null @@ -1,263 +0,0 @@ -/* Copyright (C) 1998-2003, 2004, 2005 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <stdlib.h> -#include <stdio.h> -#include <unistd.h> -#include <ldsodefs.h> -#include <bp-start.h> -#include <bp-sym.h> - -extern void __libc_init_first (int argc, char **argv, char **envp); - -extern int __libc_multiple_libcs; - -#include <tls.h> -#ifndef SHARED -# include <dl-osinfo.h> -extern void __pthread_initialize_minimal (void) -# if !(USE_TLS - 0) && !defined NONTLS_INIT_TP - __attribute__ ((weak)) -# endif - ; -# ifndef THREAD_SET_STACK_GUARD -/* Only exported for architectures that don't store the stack guard canary - in thread local area. */ -uintptr_t __stack_chk_guard attribute_relro; -# endif -#endif - -#ifdef HAVE_PTR_NTHREADS -/* We need atomic operations. */ -# include <atomic.h> -#endif - - -#ifdef LIBC_START_MAIN -# ifdef LIBC_START_DISABLE_INLINE -# define STATIC static -# else -# define STATIC static inline __attribute__ ((always_inline)) -# endif -#else -# define STATIC -# define LIBC_START_MAIN BP_SYM (__libc_start_main) -#endif - -#ifdef MAIN_AUXVEC_ARG -/* main gets passed a pointer to the auxiliary. */ -# define MAIN_AUXVEC_DECL , void * -# define MAIN_AUXVEC_PARAM , auxvec -#else -# define MAIN_AUXVEC_DECL -# define MAIN_AUXVEC_PARAM -#endif - -STATIC int LIBC_START_MAIN (int (*main) (int, char **, char ** - MAIN_AUXVEC_DECL), - int argc, - char *__unbounded *__unbounded ubp_av, -#ifdef LIBC_START_MAIN_AUXVEC_ARG - ElfW(auxv_t) *__unbounded auxvec, -#endif - __typeof (main) init, - void (*fini) (void), - void (*rtld_fini) (void), - void *__unbounded stack_end) - __attribute__ ((noreturn)); - - -/* Note: the fini parameter is ignored here for shared library. It - is registered with __cxa_atexit. This had the disadvantage that - finalizers were called in more than one place. */ -STATIC int -LIBC_START_MAIN (int (*main) (int, char **, char ** MAIN_AUXVEC_DECL), - int argc, char *__unbounded *__unbounded ubp_av, -#ifdef LIBC_START_MAIN_AUXVEC_ARG - ElfW(auxv_t) *__unbounded auxvec, -#endif - __typeof (main) init, - void (*fini) (void), - void (*rtld_fini) (void), void *__unbounded stack_end) -{ -#if __BOUNDED_POINTERS__ - char **argv; -#else -# define argv ubp_av -#endif - - /* Result of the 'main' function. */ - int result; - - __libc_multiple_libcs = &_dl_starting_up && !_dl_starting_up; - -#ifndef SHARED - char *__unbounded *__unbounded ubp_ev = &ubp_av[argc + 1]; - - INIT_ARGV_and_ENVIRON; - - /* Store the lowest stack address. This is done in ld.so if this is - the code for the DSO. */ - __libc_stack_end = stack_end; - -# ifdef HAVE_AUX_VECTOR - /* First process the auxiliary vector since we need to find the - program header to locate an eventually present PT_TLS entry. */ -# ifndef LIBC_START_MAIN_AUXVEC_ARG - ElfW(auxv_t) *__unbounded auxvec; - { - char *__unbounded *__unbounded evp = ubp_ev; - while (*evp++ != NULL) - ; - auxvec = (ElfW(auxv_t) *__unbounded) evp; - } -# endif - _dl_aux_init (auxvec); -# endif -# ifdef DL_SYSDEP_OSCHECK - if (!__libc_multiple_libcs) - { - /* This needs to run to initiliaze _dl_osversion before TLS - setup might check it. */ - DL_SYSDEP_OSCHECK (__libc_fatal); - } -# endif - - /* Initialize the thread library at least a bit since the libgcc - functions are using thread functions if these are available and - we need to setup errno. If there is no thread library and we - handle TLS the function is defined in the libc to initialized the - TLS handling. */ -# if !(USE_TLS - 0) && !defined NONTLS_INIT_TP - if (__pthread_initialize_minimal) -# endif - __pthread_initialize_minimal (); -#endif - -# ifndef SHARED - /* Set up the stack checker's canary. */ - uintptr_t stack_chk_guard = _dl_setup_stack_chk_guard (); -# ifdef THREAD_SET_STACK_GUARD - THREAD_SET_STACK_GUARD (stack_chk_guard); -# else - __stack_chk_guard = stack_chk_guard; -# endif -#endif - - /* Register the destructor of the dynamic linker if there is any. */ - if (__builtin_expect (rtld_fini != NULL, 1)) - __cxa_atexit ((void (*) (void *)) rtld_fini, NULL, NULL); - -#ifndef SHARED - /* Call the initializer of the libc. This is only needed here if we - are compiling for the static library in which case we haven't - run the constructors in `_dl_start_user'. */ - __libc_init_first (argc, argv, __environ); - - /* Register the destructor of the program, if any. */ - if (fini) - __cxa_atexit ((void (*) (void *)) fini, NULL, NULL); - - /* Some security at this point. Prevent starting a SUID binary where - the standard file descriptors are not opened. We have to do this - only for statically linked applications since otherwise the dynamic - loader did the work already. */ - if (__builtin_expect (__libc_enable_secure, 0)) - __libc_check_standard_fds (); -#endif - - /* Call the initializer of the program, if any. */ -#ifdef SHARED - if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_IMPCALLS, 0)) - GLRO(dl_debug_printf) ("\ninitialize program: %s\n\n", argv[0]); -#endif - if (init) - (*init) (argc, argv, __environ MAIN_AUXVEC_PARAM); - -#ifdef SHARED - /* Auditing checkpoint: we have a new object. */ - if (__builtin_expect (GLRO(dl_naudit) > 0, 0)) - { - struct audit_ifaces *afct = GLRO(dl_audit); - struct link_map *head = GL(dl_ns)[LM_ID_BASE]._ns_loaded; - for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt) - { - if (afct->preinit != NULL) - afct->preinit (&head->l_audit[cnt].cookie); - - afct = afct->next; - } - } -#endif - -#ifdef SHARED - if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_IMPCALLS, 0)) - GLRO(dl_debug_printf) ("\ntransferring control: %s\n\n", argv[0]); -#endif - -#ifdef HAVE_CLEANUP_JMP_BUF - /* Memory for the cancellation buffer. */ - struct pthread_unwind_buf unwind_buf; - - int not_first_call; - not_first_call = setjmp ((struct __jmp_buf_tag *) unwind_buf.cancel_jmp_buf); - if (__builtin_expect (! not_first_call, 1)) - { - struct pthread *self = THREAD_SELF; - - /* Store old info. */ - unwind_buf.priv.data.prev = THREAD_GETMEM (self, cleanup_jmp_buf); - unwind_buf.priv.data.cleanup = THREAD_GETMEM (self, cleanup); - - /* Store the new cleanup handler info. */ - THREAD_SETMEM (self, cleanup_jmp_buf, &unwind_buf); - - /* Run the program. */ - result = main (argc, argv, __environ MAIN_AUXVEC_PARAM); - } - else - { - /* Remove the thread-local data. */ -# ifdef SHARED - __libc_pthread_functions.ptr__nptl_deallocate_tsd (); -# else - extern void __nptl_deallocate_tsd (void) __attribute ((weak)); - __nptl_deallocate_tsd (); -# endif - - /* One less thread. Decrement the counter. If it is zero we - terminate the entire process. */ - result = 0; -# ifdef SHARED - unsigned int *const ptr = __libc_pthread_functions.ptr_nthreads; -# else - extern unsigned int __nptl_nthreads __attribute ((weak)); - unsigned int *const ptr = &__nptl_nthreads; -# endif - - if (! atomic_decrement_and_test (ptr)) - /* Not much left to do but to exit the thread, not the process. */ - __exit_thread (0); - } -#else - /* Nothing fancy, just call the function. */ - result = main (argc, argv, __environ MAIN_AUXVEC_PARAM); -#endif - - exit (result); -} diff --git a/csu/libc-tls.c b/csu/libc-tls.c deleted file mode 100644 index 3544e39..0000000 --- a/csu/libc-tls.c +++ /dev/null @@ -1,263 +0,0 @@ -/* Initialization code for TLS in statically linked application. - Copyright (C) 2002, 2003, 2004, 2005 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <errno.h> -#include <ldsodefs.h> -#include <tls.h> -#include <unistd.h> -#include <stdio.h> -#include <sys/param.h> - - -#ifdef SHARED - #error makefile bug, this file is for static only -#endif - -#ifdef USE_TLS -extern ElfW(Phdr) *_dl_phdr; -extern size_t _dl_phnum; - - -static dtv_t static_dtv[2 + TLS_SLOTINFO_SURPLUS]; - - -static struct -{ - struct dtv_slotinfo_list si; - /* The dtv_slotinfo_list data structure does not include the actual - information since it is defined as an array of size zero. We define - here the necessary entries. Note that it is not important whether - there is padding or not since we will always access the information - through the 'si' element. */ - struct dtv_slotinfo info[2 + TLS_SLOTINFO_SURPLUS]; -} static_slotinfo; - -/* Fake link map for the application. */ -static struct link_map static_map; - - -/* Highest dtv index currently needed. */ -size_t _dl_tls_max_dtv_idx; -/* Flag signalling whether there are gaps in the module ID allocation. */ -bool _dl_tls_dtv_gaps; -/* Information about the dtv slots. */ -struct dtv_slotinfo_list *_dl_tls_dtv_slotinfo_list; -/* Number of modules in the static TLS block. */ -size_t _dl_tls_static_nelem; -/* Size of the static TLS block. Giving this initialized value - preallocates some surplus bytes in the static TLS area. */ -size_t _dl_tls_static_size = 2048; -/* Size actually allocated in the static TLS block. */ -size_t _dl_tls_static_used; -/* Alignment requirement of the static TLS block. */ -size_t _dl_tls_static_align; - -/* Generation counter for the dtv. */ -size_t _dl_tls_generation; - - -/* Additional definitions needed by TLS initialization. */ -#ifdef TLS_INIT_HELPER -TLS_INIT_HELPER -#endif - -static inline void -init_slotinfo (void) -{ - /* Create the slotinfo list. */ - static_slotinfo.si.len = (((char *) (&static_slotinfo + 1) - - (char *) &static_slotinfo.si.slotinfo[0]) - / sizeof static_slotinfo.si.slotinfo[0]); - // static_slotinfo.si.next = NULL; already zero - - /* The slotinfo list. Will be extended by the code doing dynamic - linking. */ - GL(dl_tls_max_dtv_idx) = 1; - GL(dl_tls_dtv_slotinfo_list) = &static_slotinfo.si; -} - -static inline void -init_static_tls (size_t memsz, size_t align) -{ - /* That is the size of the TLS memory for this object. The initialized - value of _dl_tls_static_size is provided by dl-open.c to request some - surplus that permits dynamic loading of modules with IE-model TLS. */ - GL(dl_tls_static_size) = roundup (memsz + GL(dl_tls_static_size), - TLS_TCB_ALIGN); - GL(dl_tls_static_used) = memsz; - /* The alignment requirement for the static TLS block. */ - GL(dl_tls_static_align) = align; - /* Number of elements in the static TLS block. */ - GL(dl_tls_static_nelem) = GL(dl_tls_max_dtv_idx); -} - -void -__libc_setup_tls (size_t tcbsize, size_t tcbalign) -{ - void *tlsblock; - size_t memsz = 0; - size_t filesz = 0; - void *initimage = NULL; - size_t align = 0; - size_t max_align = tcbalign; - size_t tcb_offset; - ElfW(Phdr) *phdr; - - /* Look through the TLS segment if there is any. */ - if (_dl_phdr != NULL) - for (phdr = _dl_phdr; phdr < &_dl_phdr[_dl_phnum]; ++phdr) - if (phdr->p_type == PT_TLS) - { - /* Remember the values we need. */ - memsz = phdr->p_memsz; - filesz = phdr->p_filesz; - initimage = (void *) phdr->p_vaddr; - align = phdr->p_align; - if (phdr->p_align > max_align) - max_align = phdr->p_align; - break; - } - - /* We have to set up the TCB block which also (possibly) contains - 'errno'. Therefore we avoid 'malloc' which might touch 'errno'. - Instead we use 'sbrk' which would only uses 'errno' if it fails. - In this case we are right away out of memory and the user gets - what she/he deserves. - - The initialized value of _dl_tls_static_size is provided by dl-open.c - to request some surplus that permits dynamic loading of modules with - IE-model TLS. */ -# if TLS_TCB_AT_TP - tcb_offset = roundup (memsz + GL(dl_tls_static_size), tcbalign); - tlsblock = __sbrk (tcb_offset + tcbsize + max_align); -# elif TLS_DTV_AT_TP - tcb_offset = roundup (tcbsize, align ?: 1); - tlsblock = __sbrk (tcb_offset + memsz + max_align - + TLS_PRE_TCB_SIZE + GL(dl_tls_static_size)); - tlsblock += TLS_PRE_TCB_SIZE; -# else - /* In case a model with a different layout for the TCB and DTV - is defined add another #elif here and in the following #ifs. */ -# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined" -# endif - - /* Align the TLS block. */ - tlsblock = (void *) (((uintptr_t) tlsblock + max_align - 1) - & ~(max_align - 1)); - - /* Initialize the dtv. [0] is the length, [1] the generation counter. */ - static_dtv[0].counter = (sizeof (static_dtv) / sizeof (static_dtv[0])) - 2; - // static_dtv[1].counter = 0; would be needed if not already done - - /* Initialize the TLS block. */ -# if TLS_TCB_AT_TP - static_dtv[2].pointer.val = ((char *) tlsblock + tcb_offset - - roundup (memsz, align ?: 1)); - static_map.l_tls_offset = roundup (memsz, align ?: 1); -# elif TLS_DTV_AT_TP - static_dtv[2].pointer.val = (char *) tlsblock + tcb_offset; - static_map.l_tls_offset = tcb_offset; -# else -# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined" -# endif - static_dtv[2].pointer.is_static = true; - /* sbrk gives us zero'd memory, so we don't need to clear the remainder. */ - memcpy (static_dtv[2].pointer.val, initimage, filesz); - - /* Install the pointer to the dtv. */ - - /* Initialize the thread pointer. */ -# if TLS_TCB_AT_TP - INSTALL_DTV ((char *) tlsblock + tcb_offset, static_dtv); - - const char *lossage = TLS_INIT_TP ((char *) tlsblock + tcb_offset, 0); -# elif TLS_DTV_AT_TP - INSTALL_DTV (tlsblock, static_dtv); - const char *lossage = TLS_INIT_TP (tlsblock, 0); -# else -# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined" -# endif - if (__builtin_expect (lossage != NULL, 0)) - __libc_fatal (lossage); - - /* We have to create a fake link map which normally would be created - by the dynamic linker. It just has to have enough information to - make the TLS routines happy. */ - static_map.l_tls_align = align; - static_map.l_tls_blocksize = memsz; - static_map.l_tls_initimage = initimage; - static_map.l_tls_initimage_size = filesz; - static_map.l_type = lt_executable; - static_map.l_tls_modid = 1; - - init_slotinfo (); - // static_slotinfo.si.slotinfo[1].gen = 0; already zero - static_slotinfo.si.slotinfo[1].map = &static_map; - - memsz = roundup (memsz, align ?: 1); - -# if TLS_TCB_AT_TP - memsz += tcbsize; -# elif TLS_DTV_AT_TP - memsz += tcb_offset; -# endif - - init_static_tls (memsz, MAX (TLS_TCB_ALIGN, max_align)); -} - -/* This is called only when the data structure setup was skipped at startup, - when there was no need for it then. Now we have dynamically loaded - something needing TLS, or libpthread needs it. */ -int -internal_function -_dl_tls_setup (void) -{ - init_slotinfo (); - init_static_tls ( -# if TLS_TCB_AT_TP - TLS_TCB_SIZE, -# else - 0, -# endif - TLS_TCB_ALIGN); - return 0; -} - - -/* This is the minimal initialization function used when libpthread is - not used. */ -void -__attribute__ ((weak)) -__pthread_initialize_minimal (void) -{ - __libc_setup_tls (TLS_INIT_TCB_SIZE, TLS_INIT_TCB_ALIGN); -} - -#elif defined NONTLS_INIT_TP - -/* This is the minimal initialization function used when libpthread is - not used. */ -void -__attribute__ ((weak)) -__pthread_initialize_minimal (void) -{ - NONTLS_INIT_TP; -} - -#endif diff --git a/csu/errno-loc.c b/csu/munch-tmpl.c index 633590f..f807cf9 100644 --- a/csu/errno-loc.c +++ b/csu/munch-tmpl.c @@ -1,6 +1,4 @@ -/* MT support function to get address of `errno' variable, non-threaded - version. - Copyright (C) 1996, 1998, 2002, 2004 Free Software Foundation, Inc. +/* Copyright (C) 1991, 1995, 1997, 2000 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 @@ -18,20 +16,23 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ -#include <errno.h> -#include <tls.h> +#include <stdlib.h> -#if ! USE___THREAD && !RTLD_PRIVATE_ERRNO -#undef errno -extern int errno; -#endif -int * -#if ! USE___THREAD -weak_const_function -#endif -__errno_location (void) +EXTERNS + +void +__libc_init (int argc, char **argv, char **envp) { - return &errno; + CALLS + +#ifdef HAVE_INITFINI + { + /* These functions are defined in crti.o to run the .init and .fini + sections, which are used for initializers and finalizers. */ + extern void _init (void), _fini (void); + atexit (&_fini); /* Arrange for _fini to run at exit. */ + _init (); + } +#endif } -libc_hidden_def (__errno_location) diff --git a/csu/munch.awk b/csu/munch.awk new file mode 100644 index 0000000..9ebcff8 --- /dev/null +++ b/csu/munch.awk @@ -0,0 +1,11 @@ +BEGIN { special = 0 } + +/EXTERNS/ { ndirs = split(subdirs, dirs) + for (i = 1; i <= ndirs; ++i) + printf "extern void __init_%s (int argc, char **argv, char **envp);\n", dirs[i] + special = 1 } +/CALLS/ { ndirs = split(subdirs, dirs) + for (i = 1; i <= ndirs; ++i) printf " __init_%s (argc, argv, envp);\n", dirs[i] + special = 1 } + +{ if (special == 0) print $0; special = 0 } diff --git a/csu/start.c b/csu/start.c deleted file mode 100644 index 08f985c..0000000 --- a/csu/start.c +++ /dev/null @@ -1,13 +0,0 @@ -/* This file should define the low-level program entry point, - which should set up `__environ', and then do: - __libc_init(argc, argv, __environ); - exit(main(argc, argv, __environ)); - - This file should be prepared to be the first thing in the text section (on - Unix systems), or otherwise appropriately special. */ - -/* The first piece of initialized data. */ -int __data_start = 0; -#ifdef HAVE_WEAK_SYMBOLS -weak_alias (__data_start, data_start) -#endif diff --git a/csu/sysdep.c b/csu/sysdep.c deleted file mode 100644 index 5442eee..0000000 --- a/csu/sysdep.c +++ /dev/null @@ -1,2 +0,0 @@ -/* This file should contain any system-dependent functions - that will be used by many parts of the library. */ diff --git a/csu/version.c b/csu/version.c index 2196d20..1104fa9 100644 --- a/csu/version.c +++ b/csu/version.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1992-2002, 2003, 2004, 2006 Free Software Foundation, Inc. +/* Copyright (C) 1992-2002, 2003, 2004 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 @@ -25,7 +25,7 @@ static const char __libc_version[] = VERSION; static const char banner[] = "GNU C Library "RELEASE" release version "VERSION", by Roland McGrath et al.\n\ -Copyright (C) 2006 Free Software Foundation, Inc.\n\ +Copyright (C) 2004 Free Software Foundation, Inc.\n\ This is free software; see the source for copying conditions.\n\ There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n\ PARTICULAR PURPOSE.\n\ |