Mercurial > hg > CbC > CbC_gcc

annotate gcc/config/arm/bpabi.S @ 63:b7f97abdc517 gcc-4.6-20100522

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
update gcc from gcc-4.5.0 to gcc-4.6
author ryoma <e075725@ie.u-ryukyu.ac.jp>
date Mon, 24 May 2010 12:47:05 +0900
parents 77e2b8dfacca
children f6334be47118
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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1 /* Miscellaneous BPABI functions.
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2
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3 Copyright (C) 2003, 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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4 Contributed by CodeSourcery, LLC.
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5
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6 This file 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 This file is distributed in the hope that it will be useful, but
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12 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 #ifdef __ARM_EABI__
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26 /* Some attributes that are common to all routines in this file. */
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27 /* Tag_ABI_align_needed: This code does not require 8-byte
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28 alignment from the caller. */
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29 /* .eabi_attribute 24, 0 -- default setting. */
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30 /* Tag_ABI_align_preserved: This code preserves 8-byte
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31 alignment in any callee. */
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32 .eabi_attribute 25, 1
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33 #endif /* __ARM_EABI__ */
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34
0
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35 #ifdef L_aeabi_lcmp
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36
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37 ARM_FUNC_START aeabi_lcmp
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38 cmp xxh, yyh
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39 do_it lt
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40 movlt r0, #-1
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41 do_it gt
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42 movgt r0, #1
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43 do_it ne
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44 RETc(ne)
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45 subs r0, xxl, yyl
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46 do_it lo
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47 movlo r0, #-1
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48 do_it hi
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49 movhi r0, #1
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50 RET
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51 FUNC_END aeabi_lcmp
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52
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53 #endif /* L_aeabi_lcmp */
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54
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55 #ifdef L_aeabi_ulcmp
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56
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57 ARM_FUNC_START aeabi_ulcmp
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58 cmp xxh, yyh
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59 do_it lo
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60 movlo r0, #-1
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61 do_it hi
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62 movhi r0, #1
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63 do_it ne
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64 RETc(ne)
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65 cmp xxl, yyl
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66 do_it lo
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67 movlo r0, #-1
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68 do_it hi
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69 movhi r0, #1
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70 do_it eq
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71 moveq r0, #0
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72 RET
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73 FUNC_END aeabi_ulcmp
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74
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75 #endif /* L_aeabi_ulcmp */
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76
55
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77 .macro test_div_by_zero signed
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78 /* Tail-call to divide-by-zero handlers which may be overridden by the user,
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79 so unwinding works properly. */
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80 #if defined(__thumb2__)
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81 cbnz yyh, 1f
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82 cbnz yyl, 1f
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83 cmp xxh, #0
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84 do_it eq
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85 cmpeq xxl, #0
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86 .ifc \signed, unsigned
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87 beq 2f
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88 mov xxh, #0xffffffff
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89 mov xxl, xxh
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90 2:
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91 .else
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92 do_it lt, t
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93 movlt xxl, #0
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94 movlt xxh, #0x80000000
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95 do_it gt, t
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96 movgt xxh, #0x7fffffff
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97 movgt xxl, #0xffffffff
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98 .endif
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99 b SYM (__aeabi_ldiv0) __PLT__
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100 1:
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101 #else
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102 /* Note: Thumb-1 code calls via an ARM shim on processors which
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103 support ARM mode. */
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104 cmp yyh, #0
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105 cmpeq yyl, #0
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106 bne 2f
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107 cmp xxh, #0
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108 cmpeq xxl, #0
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109 .ifc \signed, unsigned
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110 movne xxh, #0xffffffff
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111 movne xxl, #0xffffffff
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112 .else
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113 movlt xxh, #0x80000000
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114 movlt xxl, #0
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115 movgt xxh, #0x7fffffff
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116 movgt xxl, #0xffffffff
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117 .endif
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118 b SYM (__aeabi_ldiv0) __PLT__
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119 2:
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120 #endif
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121 .endm
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122
0
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123 #ifdef L_aeabi_ldivmod
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124
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125 ARM_FUNC_START aeabi_ldivmod
55
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126 test_div_by_zero signed
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127
0
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128 sub sp, sp, #8
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129 #if defined(__thumb2__)
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130 mov ip, sp
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131 push {ip, lr}
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132 #else
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133 do_push {sp, lr}
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134 #endif
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135 bl SYM(__gnu_ldivmod_helper) __PLT__
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136 ldr lr, [sp, #4]
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137 add sp, sp, #8
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138 do_pop {r2, r3}
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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139 RET
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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140
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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141 #endif /* L_aeabi_ldivmod */
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142
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143 #ifdef L_aeabi_uldivmod
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144
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145 ARM_FUNC_START aeabi_uldivmod
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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146 test_div_by_zero unsigned
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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147
0
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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148 sub sp, sp, #8
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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149 #if defined(__thumb2__)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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150 mov ip, sp
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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151 push {ip, lr}
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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152 #else
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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153 do_push {sp, lr}
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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154 #endif
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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155 bl SYM(__gnu_uldivmod_helper) __PLT__
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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156 ldr lr, [sp, #4]
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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157 add sp, sp, #8
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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158 do_pop {r2, r3}
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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159 RET
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160
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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161 #endif /* L_aeabi_divmod */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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162