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1 /* Copyright (C) 2000, 2001, 2009 Free Software Foundation, Inc.
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2 This file was adapted from glibc sources.
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 3, or (at your option) any
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9 later version.
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10
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11 GCC is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 General Public License for more details.
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15
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16 Under Section 7 of GPL version 3, you are granted additional
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17 permissions described in the GCC Runtime Library Exception, version
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18 3.1, as published by the Free Software Foundation.
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19
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20 You should have received a copy of the GNU General Public License and
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21 a copy of the GCC Runtime Library Exception along with this program;
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22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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23 <http://www.gnu.org/licenses/>. */
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24
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25
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26 /* The code in sections .init and .fini is supposed to be a single
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27 regular function. The function in .init is called directly from
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28 start in crt1.asm. The function in .fini is atexit()ed in crt1.asm
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29 too.
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30
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31 crti.asm contributes the prologue of a function to these sections,
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32 and crtn.asm comes up the epilogue. STARTFILE_SPEC should list
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33 crti.o before any other object files that might add code to .init
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34 or .fini sections, and ENDFILE_SPEC should list crtn.o after any
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35 such object files. */
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36
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37 .section .init
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38 /* The alignment below can't be smaller, otherwise the mova below
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39 breaks. Yes, we might align just the label, but then we'd be
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40 exchanging an alignment here for one there, since the code fragment
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41 below ensures 4-byte alignment on __ELF__. */
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42 #ifdef __ELF__
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43 .p2align 2
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44 #else
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45 .p2align 1
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46 #endif
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47 .global _init
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48 _init:
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49 #if __SHMEDIA__
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50 addi r15, -16, r15
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51 st.q r15, 8, r14
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52 st.q r15, 0, r18
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53 add r15, r63, r14
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54 #elif __SH5__ && ! __SHMEDIA__
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55 mov r15,r0
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56 add #-8,r15
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57 mov.l r14,@-r0
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58 sts.l pr,@-r0
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59 mov r15,r14
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60 nop
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61 #else
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62 #ifdef __ELF__
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63 mov.l r12,@-r15
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64 mova 0f,r0
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65 mov.l 0f,r12
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66 #endif
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67 mov.l r14,@-r15
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68 #ifdef __ELF__
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69 add r0,r12
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70 #endif
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71 sts.l pr,@-r15
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72 #ifdef __ELF__
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73 bra 1f
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74 #endif
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75 mov r15,r14
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76 #ifdef __ELF__
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77 0: .long _GLOBAL_OFFSET_TABLE_
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78 1:
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79 #endif
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80 #endif /* __SHMEDIA__ */
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81
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82 .section .fini
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83 /* The alignment below can't be smaller, otherwise the mova below
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84 breaks. Yes, we might align just the label, but then we'd be
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85 exchanging an alignment here for one there, since the code fragment
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86 below ensures 4-byte alignment on __ELF__. */
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87 #ifdef __ELF__
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88 .p2align 2
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89 #else
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90 .p2align 1
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91 #endif
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92 .global _fini
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93 _fini:
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94 #if __SHMEDIA__
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95 addi r15, -16, r15
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96 st.q r15, 8, r14
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97 st.q r15, 0, r18
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98 add r15, r63, r14
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99 #elif __SH5__ && ! __SHMEDIA__
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100 mov r15,r0
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101 add #-8,r15
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102 mov.l r14,@-r0
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103 sts.l pr,@-r0
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104 mov r15,r14
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105 nop
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106 #else
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107 #ifdef __ELF__
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108 mov.l r12,@-r15
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109 mova 0f,r0
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110 mov.l 0f,r12
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111 #endif
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112 mov.l r14,@-r15
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113 #ifdef __ELF__
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114 add r0,r12
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115 #endif
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116 sts.l pr,@-r15
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117 #ifdef __ELF__
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118 bra 1f
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119 #endif
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120 mov r15,r14
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121 #ifdef __ELF__
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122 0: .long _GLOBAL_OFFSET_TABLE_
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123 1:
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124 #endif
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125 #endif /* __SHMEDIA__ */
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