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7b6bb8da | 1 | /* Copyright 2010, 2011 Free Software Foundation, Inc. |
2a20745c YQ |
2 | |
3 | This file is part of GDB. | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 3 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | .syntax unified | |
19 | .text | |
20 | .type main,%function | |
3eb2ef34 | 21 | #if defined (__thumb__) |
2a20745c YQ |
22 | .code 16 |
23 | .thumb_func | |
24 | #endif | |
25 | .globl main | |
26 | main: | |
27 | push {r7, lr} | |
28 | add sp, sp, #4 | |
29 | mov r7, sp | |
30 | ||
31 | ||
32 | /* Test call and return */ | |
33 | .global test_call | |
34 | test_call: | |
35 | bl test_call_subr | |
36 | .global test_ret_end | |
37 | test_ret_end: | |
38 | nop @ Location test_ret_end | |
39 | ||
40 | /* Test branch */ | |
41 | bl test_branch | |
42 | ||
43 | /* Test ldr from pc */ | |
44 | bl test_ldr_pc | |
45 | ||
46 | /* Test ldm/stm only in ARM mode */ | |
3eb2ef34 | 47 | #if !defined (__thumb__) |
2a20745c YQ |
48 | bl test_ldm_stm_pc |
49 | #endif | |
50 | ||
0c51be18 YQ |
51 | /* Test ldrX literal in ARM */ |
52 | #if !defined (__thumb__) | |
53 | bl test_ldr_literal | |
54 | #endif | |
55 | ||
56 | /* Test 32-bit adr in ARM */ | |
57 | #if !defined(__thumb__) | |
58 | bl test_adr_32bit | |
59 | #endif | |
60 | ||
61 | #if !defined(__thumb__) | |
62 | bl test_pop_pc | |
63 | #endif | |
64 | ||
494e194e YQ |
65 | /* Test str in ARM mode and Thumb-2 */ |
66 | #if !defined(__thumb__) | |
67 | bl test_str_pc | |
68 | #endif | |
2a20745c YQ |
69 | /* Return */ |
70 | mov sp, r7 | |
71 | sub sp, sp, #4 | |
72 | movs r0, #0 | |
73 | pop {r7, pc} | |
74 | .size main, .-main | |
75 | ||
76 | .global test_call_subr | |
3eb2ef34 | 77 | #if defined (__thumb__) |
2a20745c YQ |
78 | .code 16 |
79 | .thumb_func | |
80 | #endif | |
81 | .type test_call_subr, %function | |
82 | test_call_subr: | |
83 | nop | |
84 | .global test_call_end | |
85 | test_call_end: | |
86 | nop @ Location test_call_end | |
87 | .global test_ret | |
88 | test_ret: | |
89 | bx lr | |
90 | .size test_call_subr, .-test_call_subr | |
91 | ||
92 | ||
93 | .global test_branch | |
3eb2ef34 | 94 | #if defined (__thumb__) |
2a20745c YQ |
95 | .code 16 |
96 | .thumb_func | |
97 | #endif | |
98 | .type test_branch, %function | |
99 | test_branch: | |
100 | b L_branch | |
101 | .global | |
102 | L_branch: | |
103 | bx lr | |
104 | .size test_branch, .-test_branch | |
105 | ||
106 | .global test_ldr_pc | |
3eb2ef34 | 107 | #if defined (__thumb__) |
2a20745c YQ |
108 | .code 16 |
109 | .thumb_func | |
110 | #endif | |
111 | .type test_ldr_pc, %function | |
112 | test_ldr_pc: | |
113 | ldr r1, [pc, #0] | |
114 | ||
115 | .global | |
116 | test_ldr_pc_ret: | |
117 | bx lr | |
118 | .size test_ldr_pc, .-test_ldr_pc | |
119 | ||
3eb2ef34 | 120 | #if !defined (__thumb__) |
2a20745c YQ |
121 | .global test_ldm_stm_pc |
122 | .type test_ldm_stm_pc, %function | |
123 | test_ldm_stm_pc: | |
124 | stmdb sp!, {lr, pc} | |
125 | ldmia sp!, {r0, r1} | |
126 | ldr r0, .L1 | |
127 | stmdb sp!, {r0} | |
128 | .global | |
129 | test_ldm_pc: | |
130 | ldmia sp!, {pc} | |
131 | .global | |
132 | test_ldm_stm_pc_ret: | |
133 | bx lr | |
134 | .align 2 | |
135 | .L1: | |
136 | .word test_ldm_stm_pc_ret | |
137 | .size test_ldm_stm_pc, .-test_ldm_stm_pc | |
138 | #endif | |
494e194e | 139 | |
0c51be18 YQ |
140 | #if !defined (__thumb__) |
141 | .global test_ldr_literal | |
142 | .type test_ldr_literal, %function | |
143 | test_ldr_literal: | |
144 | ldrh r0, [pc] | |
145 | .global test_ldrsb_literal | |
146 | test_ldrsb_literal: | |
147 | ldrsb r0, [pc] | |
148 | .global test_ldrsh_literal | |
149 | test_ldrsh_literal: | |
150 | ldrsh r0, [pc] | |
151 | .global test_ldr_literal_end | |
152 | test_ldr_literal_end: | |
153 | bx lr | |
154 | .size test_ldr_literal, .-test_ldr_literal | |
155 | #endif | |
156 | ||
157 | ||
158 | #if !defined(__thumb__) | |
159 | .global test_adr_32bit | |
160 | #if defined(__thumb2__) | |
161 | .code 16 | |
162 | .thumb_func | |
163 | #endif | |
164 | test_adr_32bit: | |
165 | adr r0, .L6 | |
166 | nop | |
167 | .L6: | |
168 | nop | |
169 | .global test_adr_32bit_after | |
170 | test_adr_32bit_after: | |
171 | adr r0, .L6 | |
172 | ||
173 | .global test_adr_32bit_end | |
174 | test_adr_32bit_end: | |
175 | bx lr | |
176 | .size test_adr_32bit, .-test_adr_32bit | |
177 | #endif | |
178 | ||
179 | .global test_pop_pc | |
180 | .type test_pop_pc, %function | |
181 | #if defined(__thumb__) | |
182 | .code 16 | |
183 | .thumb_func | |
184 | #endif | |
185 | ||
186 | test_pop_pc: | |
187 | ldr r1, .L5 | |
188 | #if defined(__thumb__) | |
189 | movs r0, #1 | |
190 | orrs r1, r0 | |
191 | #endif | |
192 | push {r1} | |
193 | push {r1} | |
194 | .global test_pop_pc_1 | |
195 | test_pop_pc_1: | |
196 | pop {r1, pc} | |
197 | .global test_pop_pc_ret | |
198 | test_pop_pc_ret: | |
199 | bx lr | |
200 | .align 2 | |
201 | .L5: | |
202 | .word test_pop_pc_ret | |
203 | .size test_pop_pc, .-test_pop_pc | |
204 | ||
494e194e YQ |
205 | #if !defined(__thumb__) |
206 | #if defined (__thumb2__) | |
207 | .code 16 | |
208 | .thumb_func | |
209 | #endif | |
210 | .global test_str_pc | |
211 | .type test_str_pc, %function | |
212 | test_str_pc: | |
213 | str pc, [sp, #-4] | |
214 | ldr r0, [sp, #-4] | |
215 | sub r0, r0, pc | |
216 | /* compute offset again without displaced stepping. */ | |
217 | str pc, [sp, #-4] | |
218 | ldr r1, [sp, #-4] | |
219 | sub r1, r1, pc | |
220 | ||
221 | /* r0 should be equal to r1. */ | |
222 | cmp r0, r1 | |
223 | bne pc_offset_wrong | |
224 | ||
225 | .global pc_offset_right | |
226 | pc_offset_right: | |
227 | b test_str_pc_end | |
228 | ||
229 | .global pc_offset_wrong | |
230 | pc_offset_wrong: | |
231 | nop | |
232 | ||
233 | .global test_str_pc_end | |
234 | test_str_pc_end: | |
235 | bx lr | |
236 | #endif |