gcc/config/score/crti.asm

   1 # crti.asm for Sunplus S+CORE
   2 #
   3 #   Copyright (C) 2005 Free Software Foundation, Inc.
   4 #
   5 # This file is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License as published by the
   7 # Free Software Foundation; either version 2, or (at your option) any
   8 # later version.
   9 #
  10 # In addition to the permissions in the GNU General Public License, the
  11 # Free Software Foundation gives you unlimited permission to link the
  12 # compiled version of this file with other programs, and to distribute
  13 # those programs without any restriction coming from the use of this
  14 # file.  (The General Public License restrictions do apply in other
  15 # respects; for example, they cover modification of the file, and
  16 # distribution when not linked into another program.)
  17 #
  18 # This file is distributed in the hope that it will be useful, but
  19 # WITHOUT ANY WARRANTY; without even the implied warranty of
  20 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21 # General Public License for more details.
  22 #
  23 # You should have received a copy of the GNU General Public License
  24 # along with GCC; see the file COPYING.  If not, write to the Free
  25 # Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
  26 # 02110-1301, USA.
  27 #
  28 #   As a special exception, if you link this library with files
  29 #   compiled with GCC to produce an executable, this does not cause
  30 #   the resulting executable to be covered by the GNU General Public License.
  31 #   This exception does not however invalidate any other reasons why
  32 #   the executable file might be covered by the GNU General Public License.
  33 #
  34
  35 # This file makes a stack frame for the contents of the .init and
  36 # .fini sections.
  37 .extern _stack
  38
  39 #ifndef __pic__
  40 .section .init, "ax", @progbits
  41         .weak   _start
  42         .ent    _start
  43         .frame  r0, 0, r3, 0
  44         .mask   0x00000000, 0
  45 _start:
  46         la      r28, _gp
  47         la      r8, __bss_start
  48         la      r9, __bss_end__
  49         sub!    r9, r8
  50         srli!   r9, 2
  51         addi    r9, -1
  52         mtsr    r9, sr0
  53         li      r9, 0
  54 1:
  55         sw      r9, [r8]+, 4
  56         bcnz    1b
  57         la      r0, _stack
  58         jl      _init
  59         la      r4, _end
  60         jl      _init_argv
  61         jl      exit
  62         .end    _start
  63
  64         .weak   _init_argv
  65         .ent
  66         .frame  r0, 0, r3, 0
  67         .mask   0x00000000, 0
  68 _init_argv:
  69         ldiu!   r4, 0
  70         ldiu!   r5, 0
  71         j       main
  72         .end    _init_argv
  73
  74         .globl  _init
  75         .type   _init, %function
  76 _init:
  77         addi    r0, -32
  78         sw      r3, [r0, 20]
  79
  80         .section .fini, "ax", @progbits
  81         .globl  _fini
  82         .type   _fini, %function
  83 _fini:
  84         addi    r0, -32
  85         sw      r3, [r0, 20]
  86 #else
  87 .section .init, "ax", @progbits
  88         .set    pic
  89         .weak   _start
  90         .ent    _start
  91         .frame  r0, 0, r3, 0
  92         .mask   0x00000000, 0
  93 _start:
  94         mv      r29, r3
  95         bl      0f
  96 0:
  97         .cpload r3
  98         mv      r3, r29
  99         la      r8, __bss_start
 100         la      r9, __bss_end__
 101         sub!    r9, r8
 102         srli!   r9, 2
 103         addi    r9, -1
 104         mtsr    r9, sr0
 105         li      r9, 0
 106 1:
 107         sw      r9, [r8]+, 4
 108         bcnz    1b
 109         la      r0, _stack
 110         bl      _init
 111         la      r4, _end
 112         la      r29, _init_argv
 113         brl     r29
 114         la      r29, exit
 115         brl     r29
 116         .end    _start
 117
 118         .weak   _init_argv
 119         .ent _init_argv
 120         .frame  r0, 0, r3, 0
 121         .mask   0x00000000, 0
 122 _init_argv:
 123         ldiu!   r4, 0
 124         ldiu!   r5, 0
 125         la      r29, main
 126         brl     r29
 127         .end    _init_argv
 128
 129         .globl  _init
 130         .type   _init, %function
 131 _init:
 132         addi    r0, -32
 133         sw      r3, [r0, 20]
 134
 135         .section .fini, "ax", @progbits
 136         .globl  _fini
 137         .type   _fini, %function
 138 _fini:
 139         addi    r0, -32
 140         sw      r3, [r0, 20]
 141
 142 #endif