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comparison gcc/config/arm/bpabi-v6m.S @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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-1:000000000000 0:a06113de4d67
1 /* Miscellaneous BPABI functions. ARMv6M implementation
2
3 Copyright (C) 2006, 2008, 2009 Free Software Foundation, Inc.
4 Contributed by CodeSourcery.
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 FUNC_START aeabi_lcmp
28 cmp xxh, yyh
29 beq 1f
30 bgt 2f
31 mov r0, #1
32 neg r0, r0
33 RET
34 2:
35 mov r0, #1
36 RET
37 1:
38 sub r0, xxl, yyl
39 beq 1f
40 bhi 2f
41 mov r0, #1
42 neg r0, r0
43 RET
44 2:
45 mov r0, #1
46 1:
47 RET
48 FUNC_END aeabi_lcmp
49
50 #endif /* L_aeabi_lcmp */
51
52 #ifdef L_aeabi_ulcmp
53
54 FUNC_START aeabi_ulcmp
55 cmp xxh, yyh
56 bne 1f
57 sub r0, xxl, yyl
58 beq 2f
59 1:
60 bcs 1f
61 mov r0, #1
62 neg r0, r0
63 RET
64 1:
65 mov r0, #1
66 2:
67 RET
68 FUNC_END aeabi_ulcmp
69
70 #endif /* L_aeabi_ulcmp */
71
72 #ifdef L_aeabi_ldivmod
73
74 FUNC_START aeabi_ldivmod
75 push {r0, r1}
76 mov r0, sp
77 push {r0, lr}
78 ldr r0, [sp, #8]
79 bl SYM(__gnu_ldivmod_helper)
80 ldr r3, [sp, #4]
81 mov lr, r3
82 add sp, sp, #8
83 pop {r2, r3}
84 RET
85 FUNC_END aeabi_ldivmod
86
87 #endif /* L_aeabi_ldivmod */
88
89 #ifdef L_aeabi_uldivmod
90
91 FUNC_START aeabi_uldivmod
92 push {r0, r1}
93 mov r0, sp
94 push {r0, lr}
95 ldr r0, [sp, #8]
96 bl SYM(__gnu_uldivmod_helper)
97 ldr r3, [sp, #4]
98 mov lr, r3
99 add sp, sp, #8
100 pop {r2, r3}
101 RET
102 FUNC_END aeabi_uldivmod
103
104 #endif /* L_aeabi_uldivmod */
105
106 #ifdef L_arm_addsubsf3
107
108 FUNC_START aeabi_frsub
109
110 push {r4, lr}
111 mov r4, #1
112 lsl r4, #31
113 eor r0, r0, r4
114 bl __aeabi_fadd
115 pop {r4, pc}
116
117 FUNC_END aeabi_frsub
118
119 #endif /* L_arm_addsubsf3 */
120
121 #ifdef L_arm_cmpsf2
122
123 FUNC_START aeabi_cfrcmple
124
125 mov ip, r0
126 mov r0, r1
127 mov r1, ip
128 b 6f
129
130 FUNC_START aeabi_cfcmpeq
131 FUNC_ALIAS aeabi_cfcmple aeabi_cfcmpeq
132
133 @ The status-returning routines are required to preserve all
134 @ registers except ip, lr, and cpsr.
135 6: push {r0, r1, r2, r3, r4, lr}
136 bl __lesf2
137 @ Set the Z flag correctly, and the C flag unconditionally.
138 cmp r0, #0
139 @ Clear the C flag if the return value was -1, indicating
140 @ that the first operand was smaller than the second.
141 bmi 1f
142 mov r1, #0
143 cmn r0, r1
144 1:
145 pop {r0, r1, r2, r3, r4, pc}
146
147 FUNC_END aeabi_cfcmple
148 FUNC_END aeabi_cfcmpeq
149 FUNC_END aeabi_cfrcmple
150
151 FUNC_START aeabi_fcmpeq
152
153 push {r4, lr}
154 bl __eqsf2
155 neg r0, r0
156 add r0, r0, #1
157 pop {r4, pc}
158
159 FUNC_END aeabi_fcmpeq
160
161 .macro COMPARISON cond, helper, mode=sf2
162 FUNC_START aeabi_fcmp\cond
163
164 push {r4, lr}
165 bl __\helper\mode
166 cmp r0, #0
167 b\cond 1f
168 mov r0, #0
169 pop {r4, pc}
170 1:
171 mov r0, #1
172 pop {r4, pc}
173
174 FUNC_END aeabi_fcmp\cond
175 .endm
176
177 COMPARISON lt, le
178 COMPARISON le, le
179 COMPARISON gt, ge
180 COMPARISON ge, ge
181
182 #endif /* L_arm_cmpsf2 */
183
184 #ifdef L_arm_addsubdf3
185
186 FUNC_START aeabi_drsub
187
188 push {r4, lr}
189 mov r4, #1
190 lsl r4, #31
191 eor xxh, xxh, r4
192 bl __aeabi_dadd
193 pop {r4, pc}
194
195 FUNC_END aeabi_drsub
196
197 #endif /* L_arm_addsubdf3 */
198
199 #ifdef L_arm_cmpdf2
200
201 FUNC_START aeabi_cdrcmple
202
203 mov ip, r0
204 mov r0, r2
205 mov r2, ip
206 mov ip, r1
207 mov r1, r3
208 mov r3, ip
209 b 6f
210
211 FUNC_START aeabi_cdcmpeq
212 FUNC_ALIAS aeabi_cdcmple aeabi_cdcmpeq
213
214 @ The status-returning routines are required to preserve all
215 @ registers except ip, lr, and cpsr.
216 6: push {r0, r1, r2, r3, r4, lr}
217 bl __ledf2
218 @ Set the Z flag correctly, and the C flag unconditionally.
219 cmp r0, #0
220 @ Clear the C flag if the return value was -1, indicating
221 @ that the first operand was smaller than the second.
222 bmi 1f
223 mov r1, #0
224 cmn r0, r1
225 1:
226 pop {r0, r1, r2, r3, r4, pc}
227
228 FUNC_END aeabi_cdcmple
229 FUNC_END aeabi_cdcmpeq
230 FUNC_END aeabi_cdrcmple
231
232 FUNC_START aeabi_dcmpeq
233
234 push {r4, lr}
235 bl __eqdf2
236 neg r0, r0
237 add r0, r0, #1
238 pop {r4, pc}
239
240 FUNC_END aeabi_dcmpeq
241
242 .macro COMPARISON cond, helper, mode=df2
243 FUNC_START aeabi_dcmp\cond
244
245 push {r4, lr}
246 bl __\helper\mode
247 cmp r0, #0
248 b\cond 1f
249 mov r0, #0
250 pop {r4, pc}
251 1:
252 mov r0, #1
253 pop {r4, pc}
254
255 FUNC_END aeabi_dcmp\cond
256 .endm
257
258 COMPARISON lt, le
259 COMPARISON le, le
260 COMPARISON gt, ge
261 COMPARISON ge, ge
262
263 #endif /* L_arm_cmpdf2 */