diff options
Diffstat (limited to 'sysdeps/nacl/dl-sysdep.c')
| -rw-r--r-- | sysdeps/nacl/dl-sysdep.c | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/sysdeps/nacl/dl-sysdep.c b/sysdeps/nacl/dl-sysdep.c deleted file mode 100644 index a2e388bd4e..0000000000 --- a/sysdeps/nacl/dl-sysdep.c +++ /dev/null @@ -1,112 +0,0 @@ -/* Operating system support for run-time dynamic linker. NaCl version. - Copyright (C) 2015-2017 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/>. */ - -#ifdef SHARED - -# include <assert.h> -# include <ldsodefs.h> -# include <stdint.h> -# include <nacl-interfaces.h> - -/* NaCl's elf32.h is incompatible with the real <elf.h>. */ -# define NATIVE_CLIENT_SRC_INCLUDE_ELF32_H_ -# include <native_client/src/untrusted/nacl/nacl_startup.h> - -/* The RTLD_START code sets up the pointer that gets to these - macros as COOKIE to point to two words: - [0] the argument to the entry point from the system (see nacl_startup.h) - [1] the stack base -*/ - -# define DL_FIND_ARG_COMPONENTS(cookie, argc, argv, envp, auxp) \ - do { \ - uint32_t *_info = ((void **) (cookie))[0]; \ - (argc) = nacl_startup_argc (_info); \ - (argv) = nacl_startup_argv (_info); \ - (envp) = nacl_startup_envp (_info); \ - (auxp) = nacl_startup_auxv (_info); \ - } while (0) - -# define DL_STACK_END(cookie) (((void **) (cookie))[1]) - -/* This is called from the entry point (_start), defined by the RTLD_START - macro in the machine-specific dl-machine.h file. At this point, dynamic - linking has been completed and the first argument is the application's - entry point. */ -attribute_hidden internal_function __attribute__ ((noreturn)) -void -_dl_start_user (void (*user_entry) (uint32_t info[]), uint32_t info[]) -{ - if (_dl_skip_args > 0) - { - /* There are some arguments that the user program should not see. - Just slide up the INFO pointer so its NACL_STARTUP_ARGV points - to what should now be argv[0], and copy back the earlier fields. */ - assert (nacl_startup_argc (info) >= _dl_skip_args); - assert (NACL_STARTUP_ARGV == 3); - uint32_t envc = info[NACL_STARTUP_ENVC]; - uint32_t argc = info[NACL_STARTUP_ARGC]; - info += _dl_skip_args; - info[NACL_STARTUP_ENVC] = envc; - info[NACL_STARTUP_ARGC] = argc - _dl_skip_args; - } - - /* Pass our finalizer function to the user. */ - info[NACL_STARTUP_FINI] = (uintptr_t) &_dl_fini; - - /* Run initializers. */ - _dl_init (GL(dl_ns)[0]._ns_loaded, - nacl_startup_argc (info), - nacl_startup_argv (info), - nacl_startup_envp (info)); - - /* Call the user's entry point. This should never return. */ - (*user_entry) (info); - - /* Fail clearly just in case it did return. */ - __builtin_trap (); -} - -# define DL_SYSDEP_INIT __nacl_initialize_interfaces () - -#endif /* SHARED */ - -#include <elf/dl-sysdep.c> - -#include <dl-sysdep-open.h> -#include <nacl-interfaces.h> -#include <assert.h> -#include <string.h> -#include <unistd.h> - -char * -internal_function -_dl_sysdep_open_object (const char *name, size_t namelen, int *fd) -{ - int error = __nacl_irt_resource_open.open_resource (name, fd); - if (error) - return NULL; - assert (*fd != -1); - char *realname = __strdup (name); - if (__glibc_unlikely (realname == NULL)) - { - __close (*fd); - *fd = -1; - } - return realname; -} |