diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/arm/init-first.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/arm/init-first.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/arm/init-first.h b/sysdeps/unix/sysv/linux/arm/init-first.h new file mode 100644 index 0000000000..d68c368cc2 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arm/init-first.h @@ -0,0 +1,55 @@ +/* Prepare arguments for library initialization function. + Copyright (C) 1997 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +/* The job of this fragment it to find argc and friends for INIT. + This is done in one of two ways: either in the stack context + of program start, or having dlopen pass them in. + + */ + +#define SYSDEP_CALL_INIT(NAME, INIT) \ +void NAME (void* arg, ...) \ +{ \ + int argc; \ + char** argv; \ + char** envp; \ + /* The next variable is only here to work around a bug in gcc <= 2.7.2.2. \ + If the address would be taken inside the expression the optimizer \ + would try to be too smart and throws it away. Grrr. */ \ + int *dummy_addr = &_dl_starting_up; \ + \ + __libc_multiple_libcs = dummy_addr && !_dl_starting_up; \ + \ + if (!__libc_multiple_libcs) \ + { \ + /* The ... in the arg list above forces the gnu ARM compiler to \ + push r0, r1, r2, r3 onto the stack. This way we can get the address */ \ + argc = *(int*) (&arg+4); \ + argv = (char **) &arg + 5; \ + envp = &argv[argc+1]; \ + } \ + else /* the three were passed as arguments */ \ + { \ + argc = (int)arg; \ + argv = (char**)*(&arg + 1); \ + envp = (char**)*(&arg + 2); \ + } \ + \ + INIT (argc, argv, envp); \ +} |