From dacc8ffa420575038f04c543c31065fea81d5732 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Thu, 30 Mar 2000 16:30:49 +0000 Subject: Update. 2000-03-30 Ulrich Drepper Implement dynamic determination of constructor/destructor order in the dynamic linker. * elf/Versions [ld.so] (GLIBC_2.0): Remove _dl_init_next. (GLIBC_2.2): Add _dl_init. * elf/dl-close.c: Also call all destructors in FINI_ARRAY. r_duplist is not anymore allocated separately. l_initfini is and therefore free it if necessary. * elf/dl-deps.c: If a searchlist has to be allocated, put all in one malloc block. Otherwise allocate l_initfini list only. Put dependencies for the object in l_initfini list. Sort dependencies for the object to be loaded topologically. * elf/dl-fini.c: Before running the destructors sort the topologically. * elf/dl-init.c (_dl_init): Renamed from _dl_init_next. Rewrite to call constructors instead of iterating over the pointers. Get list of objects for which to run constructors from l_initfini element. Accept argc, argv, and env as parameters and pass them to the constructors. * elf/ld-load.c (_dl_map_object_from_fd): Initialize l_ldnum member with size of dynamic section. * elf/dl-open.c (dl_open_worker): Only call _dl_init instead of _dl_init_next and calling constructors ourself. * elf/dl-preinit.c (_dl_preinit): Renamed from _dl_preinit_next. Take argc, argv, and env as parameters and pass them to the constructors. Rewrite to call all constructors and not iterate over the pointers. * elf/dynamic-link.h: Don't relocate DT_FINI_ARRAY entry. Don't precompute l_initcount and l_preinitcount. * elf/link.h (struct link_map): Add l_ldnum member. Make l_phdr_allocated part of the bitfield. Remove l_runcount, l_initcount, and l_preinitcount. Add l_initfini. * sysdeps/generic/ldsodefs.h: Replace _dl_init_next prototype with one for _dl_init. * sysdeps/i386/dl-machine (RTLD_START): Rewrite to match new init function interface. * sysdeps/unix/sysv/linux/init-first.h: Removed. * sysdeps/unix/sysv/linux/Dist: Delete file here as well. * sysdeps/unix/sysv/linux/init-first.c [PIC]: Don't use SYSDEP_CALL_INIT. Make _init a strong alias of init. The calling conventions now match. * sysdeps/generic/libc-start.c: Calling __libc_init_first has no effect for shared objects. Don't emit message and call only for static library. --- elf/link.h | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) (limited to 'elf/link.h') diff --git a/elf/link.h b/elf/link.h index ac53a204a6..e4c2fea1f9 100644 --- a/elf/link.h +++ b/elf/link.h @@ -1,6 +1,6 @@ /* Data structure for communication from the run-time dynamic linker for loaded ELF shared objects. - Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc. + Copyright (C) 1995-1999, 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 @@ -137,6 +137,7 @@ struct link_map const ElfW(Phdr) *l_phdr; /* Pointer to program header table in core. */ ElfW(Addr) l_entry; /* Entry point location. */ ElfW(Half) l_phnum; /* Number of program header entries. */ + ElfW(Half) l_ldnum; /* Number of dynamic segment entries. */ /* Array of DT_NEEDED dependencies and their dependencies, in dependency order for symbol lookup (with and without @@ -166,6 +167,8 @@ struct link_map unsigned int l_init_called:1; /* Nonzero if DT_INIT function called. */ unsigned int l_global:1; /* Nonzero if object in _dl_global_scope. */ unsigned int l_reserved:2; /* Reserved for internal use. */ + unsigned int l_phdr_allocated:1; /* Nonzero if the data structure pointed + to by `l_phdr' is allocated. */ /* Array with version names. */ unsigned int l_nversions; @@ -200,22 +203,11 @@ struct link_map dev_t l_dev; ino_t l_ino; - /* Nonzero if the data structure pointed to by `l_phdr' is allocated. */ - int l_phdr_allocated; - - /* Counter for running constructors and destructors. */ - unsigned int l_runcount; - - /* Number of constructors. We compute this during loading to avoid - duplication of this during the possibly many calls to _dl_init_next. */ - unsigned int l_initcount; - /* Collected information about own RUNPATH directories. */ struct r_search_path_elem **l_runpath_dirs; - /* Number of pre-constructors. We compute this during loading to avoid - duplication of this during the possibly many calls to _dl_init_next. */ - unsigned int l_preinitcount; + /* List of object in order of the init and fini calls. */ + struct link_map **l_initfini; }; #endif /* link.h */ -- cgit v1.2.3