gcc/config/arm/crti.asm

   1 #   Copyright (C) 2001 Free Software Foundation, Inc.
   2 #   Written By Nick Clifton
   3 #
   4 # This file is free software; you can redistribute it and/or modify it
   5 # under the terms of the GNU General Public License as published by the
   6 # Free Software Foundation; either version 2, or (at your option) any
   7 # later version.
   8 #
   9 # In addition to the permissions in the GNU General Public License, the
  10 # Free Software Foundation gives you unlimited permission to link the
  11 # compiled version of this file with other programs, and to distribute
  12 # those programs without any restriction coming from the use of this
  13 # file.  (The General Public License restrictions do apply in other
  14 # respects; for example, they cover modification of the file, and
  15 # distribution when not linked into another program.)
  16 #
  17 # This file is distributed in the hope that it will be useful, but
  18 # WITHOUT ANY WARRANTY; without even the implied warranty of
  19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20 # General Public License for more details.
  21 #
  22 # You should have received a copy of the GNU General Public License
  23 # along with this program; see the file COPYING.  If not, write to
  24 # the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  25 # Boston, MA 02110-1301, USA.
  26 #
  27 #    As a special exception, if you link this library with files
  28 #    compiled with GCC to produce an executable, this does not cause
  29 #    the resulting executable to be covered by the GNU General Public License.
  30 #    This exception does not however invalidate any other reasons why
  31 #    the executable file might be covered by the GNU General Public License.
  32 #
  33
  34 # This file just make a stack frame for the contents of the .fini and
  35 # .init sections.  Users may put any desired instructions in those
  36 # sections.
  37
  38 #ifdef __ELF__
  39 #define TYPE(x) .type x,function
  40 #else
  41 #define TYPE(x)
  42 #endif
  43
  44         # Note - this macro is complemented by the FUNC_END macro
  45         # in crtn.asm.  If you change this macro you must also change
  46         # that macro match.
  47 .macro FUNC_START
  48 #ifdef __thumb__
  49         .thumb
  50
  51         push    {r3, r4, r5, r6, r7, lr}
  52 #else
  53         .arm
  54         #  Create a stack frame and save any call-preserved registers
  55         mov     ip, sp
  56         stmdb   sp!, {r3, r4, r5, r6, r7, r8, r9, sl, fp, ip, lr, pc}
  57         sub     fp, ip, #4
  58 #endif
  59 .endm
  60
  61         .file           "crti.asm"
  62
  63         .section        ".init"
  64         .align 2
  65         .global _init
  66 #ifdef __thumb__
  67         .thumb_func
  68 #endif
  69         TYPE(_init)
  70 _init:
  71         FUNC_START
  72
  73
  74         .section        ".fini"
  75         .align  2
  76         .global _fini
  77 #ifdef __thumb__
  78         .thumb_func
  79 #endif
  80         TYPE(_fini)
  81 _fini:
  82         FUNC_START
  83
  84 # end of crti.asm