diff options
Diffstat (limited to 'libc/sysdeps/linux/frv/crt0.S')
| -rw-r--r-- | libc/sysdeps/linux/frv/crt0.S | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/libc/sysdeps/linux/frv/crt0.S b/libc/sysdeps/linux/frv/crt0.S index 2bed69314..a1d07bb69 100644 --- a/libc/sysdeps/linux/frv/crt0.S +++ b/libc/sysdeps/linux/frv/crt0.S @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 1992, 2003 Free Software Foundation, Inc. +/* Copyright (C) 1991, 1992, 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 @@ -11,6 +11,15 @@ 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. +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.) + You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 675 Mass Ave, @@ -43,11 +52,12 @@ Cambridge, MA 02139, USA. */ .weak _fini .type __uClibc_start_main,%function #endif -/* Stick in a dummy reference to main(), so that if an application - * is linking when the main() function is in a static library (.a) - * we can be sure that main() actually gets linked in */ - .type main,%function _start: + /* Make sure the stack pointer is properly aligned. Save the + original value in gr21 such that we can get to arguments and + such from there. */ + mov.p sp, gr21 + andi sp, #-8, sp /* At program start-up, gr16 contains a pointer to a memory map, that we use to relocate addresses. */ call .Lcall @@ -74,10 +84,10 @@ _start: the last entry, relocated. */ /* Prepare arguments for uClibc main. */ - ld @(sp, gr0), gr8 + ld @(gr21, gr0), gr8 slli gr8, #2, gr10 - add sp, gr10, gr10 - addi.p sp, #4, gr9 + add gr21, gr10, gr10 + addi.p gr21, #4, gr9 addi gr10, #8, gr10 /* Set up an invalid (NULL return address, NULL frame pointer) |