Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/arm/bpabi.S @ 55:77e2b8dfacca gcc-4.4.5
update it from 4.4.3 to 4.5.0
author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
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date | Fri, 12 Feb 2010 23:39:51 +0900 |
parents | a06113de4d67 |
children | b7f97abdc517 |
rev | line source |
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0 | 1 /* Miscellaneous BPABI functions. |
2 | |
3 Copyright (C) 2003, 2004, 2007, 2008, 2009 Free Software Foundation, Inc. | |
4 Contributed by CodeSourcery, LLC. | |
5 | |
6 This file is free software; you can redistribute it and/or modify it | |
7 under the terms of the GNU General Public License as published by the | |
8 Free Software Foundation; either version 3, or (at your option) any | |
9 later version. | |
10 | |
11 This file is distributed in the hope that it will be useful, but | |
12 WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 General Public License for more details. | |
15 | |
16 Under Section 7 of GPL version 3, you are granted additional | |
17 permissions described in the GCC Runtime Library Exception, version | |
18 3.1, as published by the Free Software Foundation. | |
19 | |
20 You should have received a copy of the GNU General Public License and | |
21 a copy of the GCC Runtime Library Exception along with this program; | |
22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
23 <http://www.gnu.org/licenses/>. */ | |
24 | |
25 #ifdef L_aeabi_lcmp | |
26 | |
27 ARM_FUNC_START aeabi_lcmp | |
28 cmp xxh, yyh | |
29 do_it lt | |
30 movlt r0, #-1 | |
31 do_it gt | |
32 movgt r0, #1 | |
33 do_it ne | |
34 RETc(ne) | |
35 subs r0, xxl, yyl | |
36 do_it lo | |
37 movlo r0, #-1 | |
38 do_it hi | |
39 movhi r0, #1 | |
40 RET | |
41 FUNC_END aeabi_lcmp | |
42 | |
43 #endif /* L_aeabi_lcmp */ | |
44 | |
45 #ifdef L_aeabi_ulcmp | |
46 | |
47 ARM_FUNC_START aeabi_ulcmp | |
48 cmp xxh, yyh | |
49 do_it lo | |
50 movlo r0, #-1 | |
51 do_it hi | |
52 movhi r0, #1 | |
53 do_it ne | |
54 RETc(ne) | |
55 cmp xxl, yyl | |
56 do_it lo | |
57 movlo r0, #-1 | |
58 do_it hi | |
59 movhi r0, #1 | |
60 do_it eq | |
61 moveq r0, #0 | |
62 RET | |
63 FUNC_END aeabi_ulcmp | |
64 | |
65 #endif /* L_aeabi_ulcmp */ | |
66 | |
55
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67 .macro test_div_by_zero signed |
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68 /* Tail-call to divide-by-zero handlers which may be overridden by the user, |
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69 so unwinding works properly. */ |
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70 #if defined(__thumb2__) |
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71 cbnz yyh, 1f |
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72 cbnz yyl, 1f |
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73 cmp xxh, #0 |
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74 do_it eq |
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75 cmpeq xxl, #0 |
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76 .ifc \signed, unsigned |
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77 beq 2f |
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78 mov xxh, #0xffffffff |
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79 mov xxl, xxh |
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80 2: |
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81 .else |
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82 do_it lt, t |
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83 movlt xxl, #0 |
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84 movlt xxh, #0x80000000 |
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85 do_it gt, t |
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86 movgt xxh, #0x7fffffff |
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87 movgt xxl, #0xffffffff |
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88 .endif |
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89 b SYM (__aeabi_ldiv0) __PLT__ |
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90 1: |
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91 #else |
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92 /* Note: Thumb-1 code calls via an ARM shim on processors which |
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93 support ARM mode. */ |
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94 cmp yyh, #0 |
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95 cmpeq yyl, #0 |
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96 bne 2f |
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97 cmp xxh, #0 |
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98 cmpeq xxl, #0 |
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99 .ifc \signed, unsigned |
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100 movne xxh, #0xffffffff |
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101 movne xxl, #0xffffffff |
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102 .else |
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103 movlt xxh, #0x80000000 |
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104 movlt xxl, #0 |
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105 movgt xxh, #0x7fffffff |
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106 movgt xxl, #0xffffffff |
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107 .endif |
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108 b SYM (__aeabi_ldiv0) __PLT__ |
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109 2: |
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110 #endif |
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111 .endm |
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112 |
0 | 113 #ifdef L_aeabi_ldivmod |
114 | |
115 ARM_FUNC_START aeabi_ldivmod | |
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116 test_div_by_zero signed |
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117 |
0 | 118 sub sp, sp, #8 |
119 #if defined(__thumb2__) | |
120 mov ip, sp | |
121 push {ip, lr} | |
122 #else | |
123 do_push {sp, lr} | |
124 #endif | |
125 bl SYM(__gnu_ldivmod_helper) __PLT__ | |
126 ldr lr, [sp, #4] | |
127 add sp, sp, #8 | |
128 do_pop {r2, r3} | |
129 RET | |
130 | |
131 #endif /* L_aeabi_ldivmod */ | |
132 | |
133 #ifdef L_aeabi_uldivmod | |
134 | |
135 ARM_FUNC_START aeabi_uldivmod | |
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136 test_div_by_zero unsigned |
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137 |
0 | 138 sub sp, sp, #8 |
139 #if defined(__thumb2__) | |
140 mov ip, sp | |
141 push {ip, lr} | |
142 #else | |
143 do_push {sp, lr} | |
144 #endif | |
145 bl SYM(__gnu_uldivmod_helper) __PLT__ | |
146 ldr lr, [sp, #4] | |
147 add sp, sp, #8 | |
148 do_pop {r2, r3} | |
149 RET | |
150 | |
151 #endif /* L_aeabi_divmod */ | |
152 |