| /* Entry-point for programs. NaCl version. |
| Copyright (C) 2015 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. |
| |
| In addition to the permissions in the GNU Lesser General Public |
| License, the Free Software Foundation gives you unlimited |
| permission to link the compiled version of this file with other |
| programs, and to distribute those programs without any restriction |
| coming from the use of this file. (The GNU Lesser General Public |
| License restrictions do apply in other respects; for example, they |
| cover modification of the file, and distribution when not linked |
| into another program.) |
| |
| Note that people who make modified versions of this file are not |
| obligated to grant this special exception for their modified |
| versions; it is their choice whether to do so. The GNU Lesser |
| General Public License gives permission to release a modified |
| version without this exception; this exception also makes it |
| possible to release a modified version which carries forward this |
| exception. |
| |
| 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/>. */ |
| |
| #include <stdint.h> |
| #include <link.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 application defines this, of course. */ |
| extern int main (int argc, char **argv, char **envp); |
| |
| /* But maybe it defines this too, in which case it takes precedence. */ |
| extern int __nacl_main (int argc, char **argv, char **envp) |
| __attribute__ ((weak)); |
| |
| /* These are defined in libc. */ |
| extern int __libc_csu_init (int argc, char **argv, char **envp); |
| extern void __libc_csu_fini (void); |
| extern void __libc_start_main (int (*main) (int, char **, char **), |
| int argc, char **argv, ElfW(auxv_t) *auxv, |
| int (*init) (int, char **, char **), |
| void (*fini) (void), |
| void (*rtld_fini) (void), |
| void *stack_end); |
| |
| void |
| _start (uint32_t info[]) |
| { |
| /* The generic code actually assumes that envp follows argv. */ |
| |
| __libc_start_main (&__nacl_main ?: &main, |
| nacl_startup_argc (info), |
| nacl_startup_argv (info), |
| nacl_startup_auxv (info), |
| &__libc_csu_init, &__libc_csu_fini, |
| nacl_startup_fini (info), |
| __builtin_frame_address (0)); |
| |
| /* That should not return. Make sure we crash if it did. */ |
| while (1) |
| __builtin_trap (); |
| } |