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b3f8d95d MM |
1 | /* Miscellaneous BPABI functions. |
2 | ||
ac1dca3c | 3 | Copyright (C) 2003-2014 Free Software Foundation, Inc. |
b3f8d95d MM |
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 | |
748086b7 | 8 | Free Software Foundation; either version 3, or (at your option) any |
b3f8d95d MM |
9 | later version. |
10 | ||
b3f8d95d MM |
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 | ||
748086b7 JJ |
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/>. */ | |
b3f8d95d | 24 | |
6f0668cf RE |
25 | #ifdef __ARM_EABI__ |
26 | /* Some attributes that are common to all routines in this file. */ | |
27 | /* Tag_ABI_align_needed: This code does not require 8-byte | |
28 | alignment from the caller. */ | |
29 | /* .eabi_attribute 24, 0 -- default setting. */ | |
30 | /* Tag_ABI_align_preserved: This code preserves 8-byte | |
31 | alignment in any callee. */ | |
32 | .eabi_attribute 25, 1 | |
33 | #endif /* __ARM_EABI__ */ | |
34 | ||
b3f8d95d MM |
35 | #ifdef L_aeabi_lcmp |
36 | ||
37 | ARM_FUNC_START aeabi_lcmp | |
ad1ec76f PB |
38 | cmp xxh, yyh |
39 | do_it lt | |
40 | movlt r0, #-1 | |
41 | do_it gt | |
42 | movgt r0, #1 | |
43 | do_it ne | |
44 | RETc(ne) | |
45 | subs r0, xxl, yyl | |
46 | do_it lo | |
47 | movlo r0, #-1 | |
48 | do_it hi | |
49 | movhi r0, #1 | |
b3f8d95d MM |
50 | RET |
51 | FUNC_END aeabi_lcmp | |
52 | ||
53 | #endif /* L_aeabi_lcmp */ | |
54 | ||
55 | #ifdef L_aeabi_ulcmp | |
56 | ||
57 | ARM_FUNC_START aeabi_ulcmp | |
58 | cmp xxh, yyh | |
5b3e6663 | 59 | do_it lo |
b3f8d95d | 60 | movlo r0, #-1 |
5b3e6663 | 61 | do_it hi |
b3f8d95d | 62 | movhi r0, #1 |
5b3e6663 | 63 | do_it ne |
b3f8d95d MM |
64 | RETc(ne) |
65 | cmp xxl, yyl | |
5b3e6663 | 66 | do_it lo |
b3f8d95d | 67 | movlo r0, #-1 |
5b3e6663 | 68 | do_it hi |
b3f8d95d | 69 | movhi r0, #1 |
5b3e6663 | 70 | do_it eq |
b3f8d95d MM |
71 | moveq r0, #0 |
72 | RET | |
73 | FUNC_END aeabi_ulcmp | |
74 | ||
75 | #endif /* L_aeabi_ulcmp */ | |
76 | ||
0c23e1be JB |
77 | .macro test_div_by_zero signed |
78 | /* Tail-call to divide-by-zero handlers which may be overridden by the user, | |
79 | so unwinding works properly. */ | |
80 | #if defined(__thumb2__) | |
81 | cbnz yyh, 1f | |
82 | cbnz yyl, 1f | |
83 | cmp xxh, #0 | |
84 | do_it eq | |
85 | cmpeq xxl, #0 | |
86 | .ifc \signed, unsigned | |
87 | beq 2f | |
88 | mov xxh, #0xffffffff | |
89 | mov xxl, xxh | |
90 | 2: | |
91 | .else | |
92 | do_it lt, t | |
93 | movlt xxl, #0 | |
94 | movlt xxh, #0x80000000 | |
95 | do_it gt, t | |
96 | movgt xxh, #0x7fffffff | |
97 | movgt xxl, #0xffffffff | |
98 | .endif | |
99 | b SYM (__aeabi_ldiv0) __PLT__ | |
100 | 1: | |
101 | #else | |
102 | /* Note: Thumb-1 code calls via an ARM shim on processors which | |
103 | support ARM mode. */ | |
104 | cmp yyh, #0 | |
105 | cmpeq yyl, #0 | |
106 | bne 2f | |
107 | cmp xxh, #0 | |
108 | cmpeq xxl, #0 | |
109 | .ifc \signed, unsigned | |
110 | movne xxh, #0xffffffff | |
111 | movne xxl, #0xffffffff | |
112 | .else | |
113 | movlt xxh, #0x80000000 | |
114 | movlt xxl, #0 | |
115 | movgt xxh, #0x7fffffff | |
116 | movgt xxl, #0xffffffff | |
117 | .endif | |
118 | b SYM (__aeabi_ldiv0) __PLT__ | |
119 | 2: | |
120 | #endif | |
121 | .endm | |
122 | ||
b3f8d95d MM |
123 | #ifdef L_aeabi_ldivmod |
124 | ||
125 | ARM_FUNC_START aeabi_ldivmod | |
34652576 | 126 | cfi_start __aeabi_ldivmod, LSYM(Lend_aeabi_ldivmod) |
f21d8faa | 127 | test_div_by_zero signed |
0c23e1be | 128 | |
f21d8faa | 129 | sub sp, sp, #8 |
5b3e6663 | 130 | #if defined(__thumb2__) |
f21d8faa CB |
131 | mov ip, sp |
132 | push {ip, lr} | |
5b3e6663 | 133 | #else |
f21d8faa | 134 | do_push {sp, lr} |
5b3e6663 | 135 | #endif |
34652576 | 136 | 98: cfi_push 98b - __aeabi_ldivmod, 0xe, -0xc, 0x10 |
f21d8faa CB |
137 | bl SYM(__gnu_ldivmod_helper) __PLT__ |
138 | ldr lr, [sp, #4] | |
139 | add sp, sp, #8 | |
140 | do_pop {r2, r3} | |
b3f8d95d | 141 | RET |
34652576 | 142 | cfi_end LSYM(Lend_aeabi_ldivmod) |
b3f8d95d MM |
143 | |
144 | #endif /* L_aeabi_ldivmod */ | |
145 | ||
146 | #ifdef L_aeabi_uldivmod | |
147 | ||
148 | ARM_FUNC_START aeabi_uldivmod | |
34652576 | 149 | cfi_start __aeabi_uldivmod, LSYM(Lend_aeabi_uldivmod) |
f21d8faa | 150 | test_div_by_zero unsigned |
0c23e1be | 151 | |
f21d8faa | 152 | sub sp, sp, #8 |
5b3e6663 | 153 | #if defined(__thumb2__) |
f21d8faa CB |
154 | mov ip, sp |
155 | push {ip, lr} | |
5b3e6663 | 156 | #else |
f21d8faa | 157 | do_push {sp, lr} |
5b3e6663 | 158 | #endif |
34652576 | 159 | 98: cfi_push 98b - __aeabi_uldivmod, 0xe, -0xc, 0x10 |
f21d8faa CB |
160 | bl SYM(__gnu_uldivmod_helper) __PLT__ |
161 | ldr lr, [sp, #4] | |
162 | add sp, sp, #8 | |
163 | do_pop {r2, r3} | |
b3f8d95d | 164 | RET |
34652576 MI |
165 | cfi_end LSYM(Lend_aeabi_uldivmod) |
166 | ||
b3f8d95d MM |
167 | #endif /* L_aeabi_divmod */ |
168 |