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Elliott Hughes0f3c5532012-03-30 14:51:51 -07001/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
Ian Rogers7655f292013-07-29 11:07:13 -070017#include "asm_support_arm.S"
Ian Rogers9651f422011-09-19 20:26:07 -070018
Mathieu Chartier7410f292013-11-24 13:17:35 -080019#include "arch/quick_alloc_entrypoints.S"
20
Ian Rogersff1ed472011-09-20 13:46:24 -070021 /* Deliver the given exception */
22 .extern artDeliverExceptionFromCode
23 /* Deliver an exception pending on a thread */
24 .extern artDeliverPendingException
25
Ian Rogers4f0d07c2011-10-06 23:38:47 -070026 /*
Andreas Gampe76914b02015-07-17 20:14:50 -070027 * Macro to spill the GPRs.
Ian Rogers4f0d07c2011-10-06 23:38:47 -070028 */
Andreas Gampe76914b02015-07-17 20:14:50 -070029.macro SPILL_ALL_CALLEE_SAVE_GPRS
Ian Rogers1d8cdbc2014-09-22 22:51:09 -070030 push {r4-r11, lr} @ 9 words (36 bytes) of callee saves.
Ian Rogers9329bbb2013-02-08 19:56:30 -080031 .cfi_adjust_cfa_offset 36
32 .cfi_rel_offset r4, 0
33 .cfi_rel_offset r5, 4
34 .cfi_rel_offset r6, 8
35 .cfi_rel_offset r7, 12
36 .cfi_rel_offset r8, 16
37 .cfi_rel_offset r9, 20
38 .cfi_rel_offset r10, 24
39 .cfi_rel_offset r11, 28
40 .cfi_rel_offset lr, 32
Andreas Gampe76914b02015-07-17 20:14:50 -070041.endm
42
43 /*
44 * Macro that sets up the callee save frame to conform with
Vladimir Markofd36f1f2016-08-03 18:49:58 +010045 * Runtime::CreateCalleeSaveMethod(kSaveAllCalleeSaves)
Andreas Gampe76914b02015-07-17 20:14:50 -070046 */
Vladimir Markofd36f1f2016-08-03 18:49:58 +010047.macro SETUP_SAVE_ALL_CALLEE_SAVES_FRAME rTemp
Andreas Gampe76914b02015-07-17 20:14:50 -070048 SPILL_ALL_CALLEE_SAVE_GPRS @ 9 words (36 bytes) of callee saves.
Zheng Xu5667fdb2014-10-23 18:29:55 +080049 vpush {s16-s31} @ 16 words (64 bytes) of floats.
Zheng Xu5667fdb2014-10-23 18:29:55 +080050 .cfi_adjust_cfa_offset 64
51 sub sp, #12 @ 3 words of space, bottom word will hold Method*
Ian Rogers9329bbb2013-02-08 19:56:30 -080052 .cfi_adjust_cfa_offset 12
Vladimir Marko3098c8c2016-06-14 17:43:17 +010053 RUNTIME_CURRENT1 \rTemp @ Load Runtime::Current into rTemp.
Vladimir Markofd36f1f2016-08-03 18:49:58 +010054 @ Load kSaveAllCalleeSaves Method* into rTemp.
55 ldr \rTemp, [\rTemp, #RUNTIME_SAVE_ALL_CALLEE_SAVES_METHOD_OFFSET]
Vladimir Marko3098c8c2016-06-14 17:43:17 +010056 str \rTemp, [sp, #0] @ Place Method* at bottom of stack.
Ian Rogers1d8cdbc2014-09-22 22:51:09 -070057 str sp, [r9, #THREAD_TOP_QUICK_FRAME_OFFSET] @ Place sp in Thread::Current()->top_quick_frame.
Andreas Gampe5c1e4352014-04-21 19:28:24 -070058
59 // Ugly compile-time check, but we only have the preprocessor.
Vladimir Markofd36f1f2016-08-03 18:49:58 +010060#if (FRAME_SIZE_SAVE_ALL_CALLEE_SAVES != 36 + 64 + 12)
61#error "FRAME_SIZE_SAVE_ALL_CALLEE_SAVES(ARM) size not as expected."
Andreas Gampe5c1e4352014-04-21 19:28:24 -070062#endif
Ian Rogers4f0d07c2011-10-06 23:38:47 -070063.endm
64
65 /*
66 * Macro that sets up the callee save frame to conform with
Vladimir Markofd36f1f2016-08-03 18:49:58 +010067 * Runtime::CreateCalleeSaveMethod(kSaveRefsOnly).
Ian Rogers4f0d07c2011-10-06 23:38:47 -070068 */
Vladimir Markofd36f1f2016-08-03 18:49:58 +010069.macro SETUP_SAVE_REFS_ONLY_FRAME rTemp
Ian Rogers1d8cdbc2014-09-22 22:51:09 -070070 push {r5-r8, r10-r11, lr} @ 7 words of callee saves
Ian Rogers9329bbb2013-02-08 19:56:30 -080071 .cfi_adjust_cfa_offset 28
72 .cfi_rel_offset r5, 0
73 .cfi_rel_offset r6, 4
74 .cfi_rel_offset r7, 8
75 .cfi_rel_offset r8, 12
76 .cfi_rel_offset r10, 16
77 .cfi_rel_offset r11, 20
78 .cfi_rel_offset lr, 24
Ian Rogers1d8cdbc2014-09-22 22:51:09 -070079 sub sp, #4 @ bottom word will hold Method*
Ian Rogers9329bbb2013-02-08 19:56:30 -080080 .cfi_adjust_cfa_offset 4
Vladimir Marko3098c8c2016-06-14 17:43:17 +010081 RUNTIME_CURRENT2 \rTemp @ Load Runtime::Current into rTemp.
Vladimir Markofd36f1f2016-08-03 18:49:58 +010082 @ Load kSaveRefsOnly Method* into rTemp.
83 ldr \rTemp, [\rTemp, #RUNTIME_SAVE_REFS_ONLY_METHOD_OFFSET]
Vladimir Marko3098c8c2016-06-14 17:43:17 +010084 str \rTemp, [sp, #0] @ Place Method* at bottom of stack.
Ian Rogers1d8cdbc2014-09-22 22:51:09 -070085 str sp, [r9, #THREAD_TOP_QUICK_FRAME_OFFSET] @ Place sp in Thread::Current()->top_quick_frame.
Andreas Gampe5c1e4352014-04-21 19:28:24 -070086
87 // Ugly compile-time check, but we only have the preprocessor.
Vladimir Markofd36f1f2016-08-03 18:49:58 +010088#if (FRAME_SIZE_SAVE_REFS_ONLY != 28 + 4)
89#error "FRAME_SIZE_SAVE_REFS_ONLY(ARM) size not as expected."
Andreas Gampe5c1e4352014-04-21 19:28:24 -070090#endif
Ian Rogers4f0d07c2011-10-06 23:38:47 -070091.endm
92
Vladimir Markofd36f1f2016-08-03 18:49:58 +010093.macro RESTORE_SAVE_REFS_ONLY_FRAME
Mathieu Chartier2a6c7b72013-10-16 11:16:33 -070094 add sp, #4 @ bottom word holds Method*
Christopher Ferrisd0a0b3e2014-10-30 19:04:13 -070095 .cfi_adjust_cfa_offset -4
Mathieu Chartier2a6c7b72013-10-16 11:16:33 -070096 pop {r5-r8, r10-r11, lr} @ 7 words of callee saves
Dave Allisonbbb32c22013-11-05 18:25:18 -080097 .cfi_restore r5
98 .cfi_restore r6
99 .cfi_restore r7
100 .cfi_restore r8
101 .cfi_restore r10
102 .cfi_restore r11
Christopher Ferrisd0a0b3e2014-10-30 19:04:13 -0700103 .cfi_restore lr
104 .cfi_adjust_cfa_offset -28
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700105.endm
106
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100107.macro RESTORE_SAVE_REFS_ONLY_FRAME_AND_RETURN
108 RESTORE_SAVE_REFS_ONLY_FRAME
Mathieu Chartier2a6c7b72013-10-16 11:16:33 -0700109 bx lr @ return
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700110.endm
111
112 /*
113 * Macro that sets up the callee save frame to conform with
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100114 * Runtime::CreateCalleeSaveMethod(kSaveRefsAndArgs).
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700115 */
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100116.macro SETUP_SAVE_REFS_AND_ARGS_FRAME_REGISTERS_ONLY
Zheng Xu5667fdb2014-10-23 18:29:55 +0800117 push {r1-r3, r5-r8, r10-r11, lr} @ 10 words of callee saves and args.
Zheng Xu5667fdb2014-10-23 18:29:55 +0800118 .cfi_adjust_cfa_offset 40
Jeff Hao5d917302013-02-27 17:57:33 -0800119 .cfi_rel_offset r1, 0
120 .cfi_rel_offset r2, 4
121 .cfi_rel_offset r3, 8
122 .cfi_rel_offset r5, 12
123 .cfi_rel_offset r6, 16
124 .cfi_rel_offset r7, 20
125 .cfi_rel_offset r8, 24
126 .cfi_rel_offset r10, 28
127 .cfi_rel_offset r11, 32
128 .cfi_rel_offset lr, 36
Zheng Xu5667fdb2014-10-23 18:29:55 +0800129 vpush {s0-s15} @ 16 words of float args.
Zheng Xu5667fdb2014-10-23 18:29:55 +0800130 .cfi_adjust_cfa_offset 64
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100131 sub sp, #8 @ 2 words of space, alignment padding and Method*
Ian Rogers9329bbb2013-02-08 19:56:30 -0800132 .cfi_adjust_cfa_offset 8
Zheng Xu5667fdb2014-10-23 18:29:55 +0800133 // Ugly compile-time check, but we only have the preprocessor.
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100134#if (FRAME_SIZE_SAVE_REFS_AND_ARGS != 40 + 64 + 8)
135#error "FRAME_SIZE_SAVE_REFS_AND_ARGS(ARM) size not as expected."
Zheng Xu5667fdb2014-10-23 18:29:55 +0800136#endif
137.endm
138
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100139.macro SETUP_SAVE_REFS_AND_ARGS_FRAME rTemp
140 SETUP_SAVE_REFS_AND_ARGS_FRAME_REGISTERS_ONLY
Vladimir Marko3098c8c2016-06-14 17:43:17 +0100141 RUNTIME_CURRENT3 \rTemp @ Load Runtime::Current into rTemp.
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100142 @ Load kSaveRefsAndArgs Method* into rTemp.
143 ldr \rTemp, [\rTemp, #RUNTIME_SAVE_REFS_AND_ARGS_METHOD_OFFSET]
Vladimir Marko3098c8c2016-06-14 17:43:17 +0100144 str \rTemp, [sp, #0] @ Place Method* at bottom of stack.
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700145 str sp, [r9, #THREAD_TOP_QUICK_FRAME_OFFSET] @ Place sp in Thread::Current()->top_quick_frame.
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700146.endm
147
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100148.macro SETUP_SAVE_REFS_AND_ARGS_FRAME_WITH_METHOD_IN_R0
149 SETUP_SAVE_REFS_AND_ARGS_FRAME_REGISTERS_ONLY
150 str r0, [sp, #0] @ Store ArtMethod* to bottom of stack.
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700151 str sp, [r9, #THREAD_TOP_QUICK_FRAME_OFFSET] @ Place sp in Thread::Current()->top_quick_frame.
152.endm
153
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100154.macro RESTORE_SAVE_REFS_AND_ARGS_FRAME
Mathieu Chartier2a6c7b72013-10-16 11:16:33 -0700155 add sp, #8 @ rewind sp
Zheng Xu5667fdb2014-10-23 18:29:55 +0800156 .cfi_adjust_cfa_offset -8
157 vpop {s0-s15}
158 .cfi_adjust_cfa_offset -64
Mathieu Chartier2a6c7b72013-10-16 11:16:33 -0700159 pop {r1-r3, r5-r8, r10-r11, lr} @ 10 words of callee saves
Dave Allisonbbb32c22013-11-05 18:25:18 -0800160 .cfi_restore r1
161 .cfi_restore r2
162 .cfi_restore r3
163 .cfi_restore r5
164 .cfi_restore r6
165 .cfi_restore r7
166 .cfi_restore r8
167 .cfi_restore r10
168 .cfi_restore r11
Christopher Ferrisd0a0b3e2014-10-30 19:04:13 -0700169 .cfi_restore lr
Zheng Xu5667fdb2014-10-23 18:29:55 +0800170 .cfi_adjust_cfa_offset -40
Ian Rogers15fdb8c2011-09-25 15:45:07 -0700171.endm
172
Vladimir Marko952dbb12016-07-28 12:01:51 +0100173 /*
174 * Macro that sets up the callee save frame to conform with
175 * Runtime::CreateCalleeSaveMethod(kSaveEverything)
Vladimir Marko3b7537b2016-09-13 11:56:01 +0000176 * when core registers are already saved.
177 */
178.macro SETUP_SAVE_EVERYTHING_FRAME_CORE_REGS_SAVED rTemp
179 @ 14 words of callee saves and args already saved.
180 vpush {d0-d15} @ 32 words, 2 for each of the 16 saved doubles.
181 .cfi_adjust_cfa_offset 128
182 sub sp, #8 @ 2 words of space, alignment padding and Method*
183 .cfi_adjust_cfa_offset 8
184 RUNTIME_CURRENT1 \rTemp @ Load Runtime::Current into rTemp.
185 @ Load kSaveEverything Method* into rTemp.
186 ldr \rTemp, [\rTemp, #RUNTIME_SAVE_EVERYTHING_METHOD_OFFSET]
187 str \rTemp, [sp, #0] @ Place Method* at bottom of stack.
188 str sp, [r9, #THREAD_TOP_QUICK_FRAME_OFFSET] @ Place sp in Thread::Current()->top_quick_frame.
189
190 // Ugly compile-time check, but we only have the preprocessor.
191#if (FRAME_SIZE_SAVE_EVERYTHING != 56 + 128 + 8)
192#error "FRAME_SIZE_SAVE_EVERYTHING(ARM) size not as expected."
193#endif
194.endm
195
196 /*
197 * Macro that sets up the callee save frame to conform with
198 * Runtime::CreateCalleeSaveMethod(kSaveEverything)
Vladimir Marko952dbb12016-07-28 12:01:51 +0100199 */
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100200.macro SETUP_SAVE_EVERYTHING_FRAME rTemp
Vladimir Marko952dbb12016-07-28 12:01:51 +0100201 push {r0-r12, lr} @ 14 words of callee saves and args.
202 .cfi_adjust_cfa_offset 56
203 .cfi_rel_offset r0, 0
204 .cfi_rel_offset r1, 4
205 .cfi_rel_offset r2, 8
206 .cfi_rel_offset r3, 12
207 .cfi_rel_offset r4, 16
208 .cfi_rel_offset r5, 20
209 .cfi_rel_offset r6, 24
210 .cfi_rel_offset r7, 28
211 .cfi_rel_offset r8, 32
212 .cfi_rel_offset r9, 36
213 .cfi_rel_offset r10, 40
214 .cfi_rel_offset r11, 44
215 .cfi_rel_offset ip, 48
216 .cfi_rel_offset lr, 52
Vladimir Marko3b7537b2016-09-13 11:56:01 +0000217 SETUP_SAVE_EVERYTHING_FRAME_CORE_REGS_SAVED \rTemp
Vladimir Marko952dbb12016-07-28 12:01:51 +0100218.endm
219
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100220.macro RESTORE_SAVE_EVERYTHING_FRAME
Vladimir Marko952dbb12016-07-28 12:01:51 +0100221 add sp, #8 @ rewind sp
222 .cfi_adjust_cfa_offset -8
Vladimir Markode5f1942016-08-10 12:30:05 +0100223 vpop {d0-d15}
Vladimir Marko952dbb12016-07-28 12:01:51 +0100224 .cfi_adjust_cfa_offset -128
225 pop {r0-r12, lr} @ 14 words of callee saves
226 .cfi_restore r0
227 .cfi_restore r1
228 .cfi_restore r2
229 .cfi_restore r3
230 .cfi_restore r5
231 .cfi_restore r6
232 .cfi_restore r7
233 .cfi_restore r8
234 .cfi_restore r9
235 .cfi_restore r10
236 .cfi_restore r11
237 .cfi_restore r12
238 .cfi_restore lr
239 .cfi_adjust_cfa_offset -56
240.endm
241
Vladimir Marko94ce9c22016-09-30 14:50:51 +0100242.macro RESTORE_SAVE_EVERYTHING_FRAME_KEEP_R0
243 add sp, #8 @ rewind sp
244 .cfi_adjust_cfa_offset -8
245 vpop {d0-d15}
246 .cfi_adjust_cfa_offset -128
247 add sp, #4 @ skip r0
248 .cfi_adjust_cfa_offset -4
249 .cfi_restore r0 @ debugger can no longer restore caller's r0
250 pop {r1-r12, lr} @ 13 words of callee saves
251 .cfi_restore r1
252 .cfi_restore r2
253 .cfi_restore r3
254 .cfi_restore r5
255 .cfi_restore r6
256 .cfi_restore r7
257 .cfi_restore r8
258 .cfi_restore r9
259 .cfi_restore r10
260 .cfi_restore r11
261 .cfi_restore r12
262 .cfi_restore lr
263 .cfi_adjust_cfa_offset -52
264.endm
265
Ian Rogers637859c2013-08-27 14:35:54 -0700266.macro RETURN_IF_RESULT_IS_ZERO
267 cbnz r0, 1f @ result non-zero branch over
268 bx lr @ return
2691:
270.endm
271
272.macro RETURN_IF_RESULT_IS_NON_ZERO
273 cbz r0, 1f @ result zero branch over
274 bx lr @ return
2751:
276.endm
277
Ian Rogersce9eca62011-10-07 17:11:03 -0700278 /*
Vladimir Marko94ce9c22016-09-30 14:50:51 +0100279 * Macro that calls through to artDeliverPendingExceptionFromCode, where the pending
280 * exception is Thread::Current()->exception_ when the runtime method frame is ready.
Ian Rogersce9eca62011-10-07 17:11:03 -0700281 */
Vladimir Marko94ce9c22016-09-30 14:50:51 +0100282.macro DELIVER_PENDING_EXCEPTION_FRAME_READY
Ian Rogersce9eca62011-10-07 17:11:03 -0700283 mov r0, r9 @ pass Thread::Current
Vladimir Marko908eb222016-09-14 10:29:18 +0100284 bl artDeliverPendingExceptionFromCode @ artDeliverPendingExceptionFromCode(Thread*)
Ian Rogersce9eca62011-10-07 17:11:03 -0700285.endm
286
Vladimir Marko94ce9c22016-09-30 14:50:51 +0100287 /*
288 * Macro that calls through to artDeliverPendingExceptionFromCode, where the pending
289 * exception is Thread::Current()->exception_.
290 */
291.macro DELIVER_PENDING_EXCEPTION
292 SETUP_SAVE_ALL_CALLEE_SAVES_FRAME r0 @ save callee saves for throw
293 DELIVER_PENDING_EXCEPTION_FRAME_READY
294.endm
295
Ian Rogers57b86d42012-03-27 16:05:41 -0700296.macro NO_ARG_RUNTIME_EXCEPTION c_name, cxx_name
Ian Rogers57b86d42012-03-27 16:05:41 -0700297 .extern \cxx_name
Ian Rogers9329bbb2013-02-08 19:56:30 -0800298ENTRY \c_name
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100299 SETUP_SAVE_ALL_CALLEE_SAVES_FRAME r0 @ save all registers as basis for long jump context
Ian Rogers57b86d42012-03-27 16:05:41 -0700300 mov r0, r9 @ pass Thread::Current
Vladimir Marko908eb222016-09-14 10:29:18 +0100301 bl \cxx_name @ \cxx_name(Thread*)
Ian Rogers9329bbb2013-02-08 19:56:30 -0800302END \c_name
Ian Rogers57b86d42012-03-27 16:05:41 -0700303.endm
buzbee44b412b2012-02-04 08:50:53 -0800304
Vladimir Marko804b03f2016-09-14 16:26:36 +0100305.macro NO_ARG_RUNTIME_EXCEPTION_SAVE_EVERYTHING c_name, cxx_name
306 .extern \cxx_name
307ENTRY \c_name
308 SETUP_SAVE_EVERYTHING_FRAME r0 @ save all registers as basis for long jump context
309 mov r0, r9 @ pass Thread::Current
310 bl \cxx_name @ \cxx_name(Thread*)
311END \c_name
312.endm
313
Ian Rogers57b86d42012-03-27 16:05:41 -0700314.macro ONE_ARG_RUNTIME_EXCEPTION c_name, cxx_name
Ian Rogers57b86d42012-03-27 16:05:41 -0700315 .extern \cxx_name
Ian Rogers9329bbb2013-02-08 19:56:30 -0800316ENTRY \c_name
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100317 SETUP_SAVE_ALL_CALLEE_SAVES_FRAME r1 @ save all registers as basis for long jump context
Ian Rogersff1ed472011-09-20 13:46:24 -0700318 mov r1, r9 @ pass Thread::Current
Vladimir Marko908eb222016-09-14 10:29:18 +0100319 bl \cxx_name @ \cxx_name(Thread*)
Ian Rogers9329bbb2013-02-08 19:56:30 -0800320END \c_name
Ian Rogers57b86d42012-03-27 16:05:41 -0700321.endm
Ian Rogers9651f422011-09-19 20:26:07 -0700322
Vladimir Marko804b03f2016-09-14 16:26:36 +0100323.macro TWO_ARG_RUNTIME_EXCEPTION_SAVE_EVERYTHING c_name, cxx_name
Ian Rogers57b86d42012-03-27 16:05:41 -0700324 .extern \cxx_name
Ian Rogers9329bbb2013-02-08 19:56:30 -0800325ENTRY \c_name
Vladimir Marko804b03f2016-09-14 16:26:36 +0100326 SETUP_SAVE_EVERYTHING_FRAME r2 @ save all registers as basis for long jump context
Ian Rogersff1ed472011-09-20 13:46:24 -0700327 mov r2, r9 @ pass Thread::Current
Vladimir Marko908eb222016-09-14 10:29:18 +0100328 bl \cxx_name @ \cxx_name(Thread*)
Ian Rogers9329bbb2013-02-08 19:56:30 -0800329END \c_name
Ian Rogers57b86d42012-03-27 16:05:41 -0700330.endm
Ian Rogersbdb03912011-09-14 00:55:44 -0700331
Fred Shih37f05ef2014-07-16 18:38:08 -0700332.macro RETURN_OR_DELIVER_PENDING_EXCEPTION_REG reg
333 ldr \reg, [r9, #THREAD_EXCEPTION_OFFSET] // Get exception field.
334 cbnz \reg, 1f
335 bx lr
3361:
337 DELIVER_PENDING_EXCEPTION
338.endm
339
340.macro RETURN_OR_DELIVER_PENDING_EXCEPTION_R1
341 RETURN_OR_DELIVER_PENDING_EXCEPTION_REG r1
342.endm
343
344.macro RETURN_IF_RESULT_IS_ZERO_OR_DELIVER
345 RETURN_IF_RESULT_IS_ZERO
346 DELIVER_PENDING_EXCEPTION
347.endm
348
Andreas Gampe1cc7dba2014-12-17 18:43:01 -0800349.macro RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
350 RETURN_IF_RESULT_IS_NON_ZERO
351 DELIVER_PENDING_EXCEPTION
352.endm
353
Fred Shih37f05ef2014-07-16 18:38:08 -0700354// Macros taking opportunity of code similarities for downcalls with referrer for non-wide fields.
355.macro ONE_ARG_REF_DOWNCALL name, entrypoint, return
356 .extern \entrypoint
357ENTRY \name
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100358 SETUP_SAVE_REFS_ONLY_FRAME r1 @ save callee saves in case of GC
359 ldr r1, [sp, #FRAME_SIZE_SAVE_REFS_ONLY] @ pass referrer
Fred Shih37f05ef2014-07-16 18:38:08 -0700360 mov r2, r9 @ pass Thread::Current
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700361 bl \entrypoint @ (uint32_t field_idx, const Method* referrer, Thread*)
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100362 RESTORE_SAVE_REFS_ONLY_FRAME
Fred Shih37f05ef2014-07-16 18:38:08 -0700363 \return
364END \name
365.endm
366
367.macro TWO_ARG_REF_DOWNCALL name, entrypoint, return
368 .extern \entrypoint
369ENTRY \name
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100370 SETUP_SAVE_REFS_ONLY_FRAME r2 @ save callee saves in case of GC
371 ldr r2, [sp, #FRAME_SIZE_SAVE_REFS_ONLY] @ pass referrer
Fred Shih37f05ef2014-07-16 18:38:08 -0700372 mov r3, r9 @ pass Thread::Current
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700373 bl \entrypoint @ (field_idx, Object*, referrer, Thread*)
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100374 RESTORE_SAVE_REFS_ONLY_FRAME
Fred Shih37f05ef2014-07-16 18:38:08 -0700375 \return
376END \name
377.endm
378
Andreas Gampe1cc7dba2014-12-17 18:43:01 -0800379.macro THREE_ARG_REF_DOWNCALL name, entrypoint, return
Fred Shih37f05ef2014-07-16 18:38:08 -0700380 .extern \entrypoint
381ENTRY \name
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100382 SETUP_SAVE_REFS_ONLY_FRAME r3 @ save callee saves in case of GC
383 ldr r3, [sp, #FRAME_SIZE_SAVE_REFS_ONLY] @ pass referrer
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700384 str r9, [sp, #-16]! @ expand the frame and pass Thread::Current
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700385 .cfi_adjust_cfa_offset 16
386 bl \entrypoint @ (field_idx, Object*, new_val, referrer, Thread*)
Fred Shih37f05ef2014-07-16 18:38:08 -0700387 add sp, #16 @ release out args
388 .cfi_adjust_cfa_offset -16
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100389 RESTORE_SAVE_REFS_ONLY_FRAME @ TODO: we can clearly save an add here
Fred Shih37f05ef2014-07-16 18:38:08 -0700390 \return
391END \name
392.endm
393
Ian Rogers57b86d42012-03-27 16:05:41 -0700394 /*
395 * Called by managed code, saves callee saves and then calls artThrowException
396 * that will place a mock Method* at the bottom of the stack. Arg1 holds the exception.
397 */
Ian Rogers468532e2013-08-05 10:56:33 -0700398ONE_ARG_RUNTIME_EXCEPTION art_quick_deliver_exception, artDeliverExceptionFromCode
Ian Rogers932746a2011-09-22 18:57:50 -0700399
Ian Rogers57b86d42012-03-27 16:05:41 -0700400 /*
401 * Called by managed code to create and deliver a NullPointerException.
402 */
Vladimir Marko804b03f2016-09-14 16:26:36 +0100403NO_ARG_RUNTIME_EXCEPTION_SAVE_EVERYTHING art_quick_throw_null_pointer_exception, artThrowNullPointerExceptionFromCode
Ian Rogersc0c8dc82011-09-24 18:15:59 -0700404
Ian Rogers57b86d42012-03-27 16:05:41 -0700405 /*
Nicolas Geoffraye8e11272016-06-28 18:08:46 +0100406 * Call installed by a signal handler to create and deliver a NullPointerException.
407 */
Vladimir Marko3b7537b2016-09-13 11:56:01 +0000408 .extern art_quick_throw_null_pointer_exception_from_signal
409ENTRY art_quick_throw_null_pointer_exception_from_signal
410 // The fault handler pushes the gc map address, i.e. "return address", to stack
411 // and passes the fault address in LR. So we need to set up the CFI info accordingly.
412 .cfi_def_cfa_offset __SIZEOF_POINTER__
413 .cfi_rel_offset lr, 0
414 push {r0-r12} @ 13 words of callee saves and args; LR already saved.
415 .cfi_adjust_cfa_offset 52
416 .cfi_rel_offset r0, 0
417 .cfi_rel_offset r1, 4
418 .cfi_rel_offset r2, 8
419 .cfi_rel_offset r3, 12
420 .cfi_rel_offset r4, 16
421 .cfi_rel_offset r5, 20
422 .cfi_rel_offset r6, 24
423 .cfi_rel_offset r7, 28
424 .cfi_rel_offset r8, 32
425 .cfi_rel_offset r9, 36
426 .cfi_rel_offset r10, 40
427 .cfi_rel_offset r11, 44
428 .cfi_rel_offset ip, 48
429
430 @ save all registers as basis for long jump context
431 SETUP_SAVE_EVERYTHING_FRAME_CORE_REGS_SAVED r1
432 mov r0, lr @ pass the fault address stored in LR by the fault handler.
433 mov r1, r9 @ pass Thread::Current
Vladimir Marko908eb222016-09-14 10:29:18 +0100434 bl artThrowNullPointerExceptionFromSignal @ (Thread*)
Vladimir Marko3b7537b2016-09-13 11:56:01 +0000435END art_quick_throw_null_pointer_exception_from_signal
Nicolas Geoffraye8e11272016-06-28 18:08:46 +0100436
437 /*
Ian Rogers57b86d42012-03-27 16:05:41 -0700438 * Called by managed code to create and deliver an ArithmeticException.
439 */
Vladimir Marko804b03f2016-09-14 16:26:36 +0100440NO_ARG_RUNTIME_EXCEPTION_SAVE_EVERYTHING art_quick_throw_div_zero, artThrowDivZeroFromCode
Ian Rogersc0c8dc82011-09-24 18:15:59 -0700441
Ian Rogers57b86d42012-03-27 16:05:41 -0700442 /*
443 * Called by managed code to create and deliver an ArrayIndexOutOfBoundsException. Arg1 holds
444 * index, arg2 holds limit.
445 */
Vladimir Marko804b03f2016-09-14 16:26:36 +0100446TWO_ARG_RUNTIME_EXCEPTION_SAVE_EVERYTHING art_quick_throw_array_bounds, artThrowArrayBoundsFromCode
Ian Rogers57b86d42012-03-27 16:05:41 -0700447
448 /*
Vladimir Marko87f3fcb2016-04-28 15:52:11 +0100449 * Called by managed code to create and deliver a StringIndexOutOfBoundsException
450 * as if thrown from a call to String.charAt(). Arg1 holds index, arg2 holds limit.
451 */
Vladimir Marko804b03f2016-09-14 16:26:36 +0100452TWO_ARG_RUNTIME_EXCEPTION_SAVE_EVERYTHING art_quick_throw_string_bounds, artThrowStringBoundsFromCode
Vladimir Marko87f3fcb2016-04-28 15:52:11 +0100453
454 /*
Ian Rogers57b86d42012-03-27 16:05:41 -0700455 * Called by managed code to create and deliver a StackOverflowError.
456 */
Ian Rogers468532e2013-08-05 10:56:33 -0700457NO_ARG_RUNTIME_EXCEPTION art_quick_throw_stack_overflow, artThrowStackOverflowFromCode
Ian Rogers57b86d42012-03-27 16:05:41 -0700458
459 /*
Ian Rogersc8b306f2012-02-17 21:34:44 -0800460 * All generated callsites for interface invokes and invocation slow paths will load arguments
461 * as usual - except instead of loading arg0/r0 with the target Method*, arg0/r0 will contain
Nicolas Geoffray7ea6a172015-05-19 18:58:54 +0100462 * the method_idx. This wrapper will save arg1-arg3, and call the appropriate C helper.
Elliott Hughes634eb2e2012-03-22 16:06:28 -0700463 * NOTE: "this" is first visible argument of the target, and so can be found in arg1/r1.
buzbee4a3164f2011-09-03 11:25:10 -0700464 *
Ian Rogersc8b306f2012-02-17 21:34:44 -0800465 * The helper will attempt to locate the target and return a 64-bit result in r0/r1 consisting
466 * of the target Method* in r0 and method->code_ in r1.
buzbee4a3164f2011-09-03 11:25:10 -0700467 *
Mathieu Chartier2cebb242015-04-21 16:50:40 -0700468 * If unsuccessful, the helper will return null/null. There will bea pending exception in the
Ian Rogersc8b306f2012-02-17 21:34:44 -0800469 * thread and we branch to another stub to deliver it.
buzbee4a3164f2011-09-03 11:25:10 -0700470 *
Ian Rogersff1ed472011-09-20 13:46:24 -0700471 * On success this wrapper will restore arguments and *jump* to the target, leaving the lr
472 * pointing back to the original caller.
buzbee4a3164f2011-09-03 11:25:10 -0700473 */
Andreas Gampe3031c8d2015-07-13 20:11:06 -0700474.macro INVOKE_TRAMPOLINE_BODY cxx_name
Ian Rogersc8b306f2012-02-17 21:34:44 -0800475 .extern \cxx_name
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100476 SETUP_SAVE_REFS_AND_ARGS_FRAME r2 @ save callee saves in case allocation triggers GC
Nicolas Geoffray7ea6a172015-05-19 18:58:54 +0100477 mov r2, r9 @ pass Thread::Current
478 mov r3, sp
Andreas Gampe3031c8d2015-07-13 20:11:06 -0700479 bl \cxx_name @ (method_idx, this, Thread*, SP)
Elliott Hughes634eb2e2012-03-22 16:06:28 -0700480 mov r12, r1 @ save Method*->code_
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100481 RESTORE_SAVE_REFS_AND_ARGS_FRAME
Ian Rogers637859c2013-08-27 14:35:54 -0700482 cbz r0, 1f @ did we find the target? if not go to exception delivery
483 bx r12 @ tail call to target
4841:
Ian Rogersa32a6fd2012-02-06 20:18:44 -0800485 DELIVER_PENDING_EXCEPTION
Andreas Gampe3031c8d2015-07-13 20:11:06 -0700486.endm
487.macro INVOKE_TRAMPOLINE c_name, cxx_name
488ENTRY \c_name
489 INVOKE_TRAMPOLINE_BODY \cxx_name
Ian Rogers9329bbb2013-02-08 19:56:30 -0800490END \c_name
Ian Rogersc8b306f2012-02-17 21:34:44 -0800491.endm
Ian Rogersa32a6fd2012-02-06 20:18:44 -0800492
Logan Chien8dbb7082013-01-25 20:31:17 +0800493INVOKE_TRAMPOLINE art_quick_invoke_interface_trampoline_with_access_check, artInvokeInterfaceTrampolineWithAccessCheck
Ian Rogersa32a6fd2012-02-06 20:18:44 -0800494
Logan Chien8dbb7082013-01-25 20:31:17 +0800495INVOKE_TRAMPOLINE art_quick_invoke_static_trampoline_with_access_check, artInvokeStaticTrampolineWithAccessCheck
496INVOKE_TRAMPOLINE art_quick_invoke_direct_trampoline_with_access_check, artInvokeDirectTrampolineWithAccessCheck
497INVOKE_TRAMPOLINE art_quick_invoke_super_trampoline_with_access_check, artInvokeSuperTrampolineWithAccessCheck
498INVOKE_TRAMPOLINE art_quick_invoke_virtual_trampoline_with_access_check, artInvokeVirtualTrampolineWithAccessCheck
Ian Rogersff1ed472011-09-20 13:46:24 -0700499
Ian Rogers57b86d42012-03-27 16:05:41 -0700500 /*
Zheng Xu5667fdb2014-10-23 18:29:55 +0800501 * Quick invocation stub internal.
Jeff Hao6474d192013-03-26 14:08:09 -0700502 * On entry:
503 * r0 = method pointer
Mathieu Chartier2cebb242015-04-21 16:50:40 -0700504 * r1 = argument array or null for no argument methods
Jeff Hao6474d192013-03-26 14:08:09 -0700505 * r2 = size of argument array in bytes
506 * r3 = (managed) thread pointer
507 * [sp] = JValue* result
Zheng Xu5667fdb2014-10-23 18:29:55 +0800508 * [sp + 4] = result_in_float
509 * [sp + 8] = core register argument array
510 * [sp + 12] = fp register argument array
511 * +-------------------------+
512 * | uint32_t* fp_reg_args |
513 * | uint32_t* core_reg_args |
514 * | result_in_float | <- Caller frame
515 * | Jvalue* result |
516 * +-------------------------+
517 * | lr |
518 * | r11 |
519 * | r9 |
520 * | r4 | <- r11
521 * +-------------------------+
522 * | uint32_t out[n-1] |
523 * | : : | Outs
524 * | uint32_t out[0] |
525 * | StackRef<ArtMethod> | <- SP value=null
526 * +-------------------------+
Jeff Hao5d917302013-02-27 17:57:33 -0800527 */
Zheng Xu5667fdb2014-10-23 18:29:55 +0800528ENTRY art_quick_invoke_stub_internal
Andreas Gampe76914b02015-07-17 20:14:50 -0700529 SPILL_ALL_CALLEE_SAVE_GPRS @ spill regs (9)
Jeff Hao5d917302013-02-27 17:57:33 -0800530 mov r11, sp @ save the stack pointer
531 .cfi_def_cfa_register r11
Zheng Xu5667fdb2014-10-23 18:29:55 +0800532
Jeff Hao5d917302013-02-27 17:57:33 -0800533 mov r9, r3 @ move managed thread pointer into r9
Zheng Xu5667fdb2014-10-23 18:29:55 +0800534
535 add r4, r2, #4 @ create space for method pointer in frame
536 sub r4, sp, r4 @ reserve & align *stack* to 16 bytes: native calling
537 and r4, #0xFFFFFFF0 @ convention only aligns to 8B, so we have to ensure ART
538 mov sp, r4 @ 16B alignment ourselves.
539
540 mov r4, r0 @ save method*
541 add r0, sp, #4 @ pass stack pointer + method ptr as dest for memcpy
542 bl memcpy @ memcpy (dest, src, bytes)
543 mov ip, #0 @ set ip to 0
Mathieu Chartier2cebb242015-04-21 16:50:40 -0700544 str ip, [sp] @ store null for method* at bottom of frame
Zheng Xu5667fdb2014-10-23 18:29:55 +0800545
Nicolas Geoffray48088462014-12-12 10:29:38 +0000546 ldr ip, [r11, #48] @ load fp register argument array pointer
Zheng Xu5667fdb2014-10-23 18:29:55 +0800547 vldm ip, {s0-s15} @ copy s0 - s15
548
Nicolas Geoffray48088462014-12-12 10:29:38 +0000549 ldr ip, [r11, #44] @ load core register argument array pointer
Zheng Xu5667fdb2014-10-23 18:29:55 +0800550 mov r0, r4 @ restore method*
551 add ip, ip, #4 @ skip r0
552 ldm ip, {r1-r3} @ copy r1 - r3
553
Wei Jin04f4d8a2014-05-29 18:04:29 -0700554#ifdef ARM_R4_SUSPEND_FLAG
Jeff Hao5d917302013-02-27 17:57:33 -0800555 mov r4, #SUSPEND_CHECK_INTERVAL @ reset r4 to suspend check interval
Wei Jin04f4d8a2014-05-29 18:04:29 -0700556#endif
Andreas Gampe6e498692014-08-18 16:43:12 -0700557
Mathieu Chartiere401d142015-04-22 13:56:20 -0700558 ldr ip, [r0, #ART_METHOD_QUICK_CODE_OFFSET_32] @ get pointer to the code
Jeff Hao5d917302013-02-27 17:57:33 -0800559 blx ip @ call the method
Zheng Xu5667fdb2014-10-23 18:29:55 +0800560
Jeff Hao6474d192013-03-26 14:08:09 -0700561 mov sp, r11 @ restore the stack pointer
Zheng Xu5667fdb2014-10-23 18:29:55 +0800562 .cfi_def_cfa_register sp
563
Nicolas Geoffray48088462014-12-12 10:29:38 +0000564 ldr r4, [sp, #40] @ load result_is_float
565 ldr r9, [sp, #36] @ load the result pointer
Zheng Xu5667fdb2014-10-23 18:29:55 +0800566 cmp r4, #0
567 ite eq
568 strdeq r0, [r9] @ store r0/r1 into result pointer
569 vstrne d0, [r9] @ store s0-s1/d0 into result pointer
570
Nicolas Geoffray48088462014-12-12 10:29:38 +0000571 pop {r4, r5, r6, r7, r8, r9, r10, r11, pc} @ restore spill regs
Zheng Xu5667fdb2014-10-23 18:29:55 +0800572END art_quick_invoke_stub_internal
Jeff Hao6474d192013-03-26 14:08:09 -0700573
Jeff Hao5d917302013-02-27 17:57:33 -0800574 /*
Nicolas Geoffrayb331feb2016-02-05 16:51:53 +0000575 * On stack replacement stub.
576 * On entry:
577 * r0 = stack to copy
578 * r1 = size of stack
579 * r2 = pc to call
580 * r3 = JValue* result
581 * [sp] = shorty
582 * [sp + 4] = thread
583 */
584ENTRY art_quick_osr_stub
585 SPILL_ALL_CALLEE_SAVE_GPRS @ Spill regs (9)
586 mov r11, sp @ Save the stack pointer
587 mov r10, r1 @ Save size of stack
588 ldr r9, [r11, #40] @ Move managed thread pointer into r9
589 mov r8, r2 @ Save the pc to call
Nicolas Geoffrayd9994f02016-02-11 17:35:55 +0000590 sub r7, sp, #12 @ Reserve space for stack pointer,
591 @ JValue* result, and ArtMethod* slot.
Nicolas Geoffrayb331feb2016-02-05 16:51:53 +0000592 and r7, #0xFFFFFFF0 @ Align stack pointer
593 mov sp, r7 @ Update stack pointer
594 str r11, [sp, #4] @ Save old stack pointer
Nicolas Geoffrayd9994f02016-02-11 17:35:55 +0000595 str r3, [sp, #8] @ Save JValue* result
Nicolas Geoffrayb331feb2016-02-05 16:51:53 +0000596 mov ip, #0
597 str ip, [sp] @ Store null for ArtMethod* at bottom of frame
598 sub sp, sp, r1 @ Reserve space for callee stack
599 mov r2, r1
600 mov r1, r0
601 mov r0, sp
602 bl memcpy @ memcpy (dest r0, src r1, bytes r2)
603 bl .Losr_entry @ Call the method
Nicolas Geoffrayd9994f02016-02-11 17:35:55 +0000604 ldr r10, [sp, #8] @ Restore JValue* result
605 ldr sp, [sp, #4] @ Restore saved stack pointer
Nicolas Geoffrayb331feb2016-02-05 16:51:53 +0000606 ldr r4, [sp, #36] @ load shorty
Nicolas Geoffrayd9bc4332016-02-05 23:32:25 +0000607 ldrb r4, [r4, #0] @ load return type
Nicolas Geoffrayb331feb2016-02-05 16:51:53 +0000608 cmp r4, #68 @ Test if result type char == 'D'.
609 beq .Losr_fp_result
610 cmp r4, #70 @ Test if result type char == 'F'.
611 beq .Losr_fp_result
612 strd r0, [r10] @ Store r0/r1 into result pointer
613 b .Losr_exit
614.Losr_fp_result:
615 vstr d0, [r10] @ Store s0-s1/d0 into result pointer
616.Losr_exit:
617 pop {r4, r5, r6, r7, r8, r9, r10, r11, pc}
618.Losr_entry:
619 sub r10, r10, #4
620 str lr, [sp, r10] @ Store link register per the compiler ABI
621 bx r8
622END art_quick_osr_stub
623
624 /*
Ian Rogers57b86d42012-03-27 16:05:41 -0700625 * On entry r0 is uint32_t* gprs_ and r1 is uint32_t* fprs_
626 */
Ian Rogers637859c2013-08-27 14:35:54 -0700627ARM_ENTRY art_quick_do_long_jump
Ian Rogers57b86d42012-03-27 16:05:41 -0700628 vldm r1, {s0-s31} @ load all fprs from argument fprs_
629 ldr r2, [r0, #60] @ r2 = r15 (PC from gprs_ 60=4*15)
Jeff Hao467f8162014-08-05 18:59:16 -0700630 ldr r14, [r0, #56] @ (LR from gprs_ 56=4*14)
Ian Rogers57b86d42012-03-27 16:05:41 -0700631 add r0, r0, #12 @ increment r0 to skip gprs_[0..2] 12=4*3
Jeff Hao467f8162014-08-05 18:59:16 -0700632 ldm r0, {r3-r13} @ load remaining gprs from argument gprs_
Andreas Gampe639bdd12015-06-03 11:22:45 -0700633 ldr r0, [r0, #-12] @ load r0 value
634 mov r1, #0 @ clear result register r1
Ian Rogers57b86d42012-03-27 16:05:41 -0700635 bx r2 @ do long jump
Ian Rogers9329bbb2013-02-08 19:56:30 -0800636END art_quick_do_long_jump
Ian Rogers57b86d42012-03-27 16:05:41 -0700637
Ian Rogers60db5ab2012-02-20 17:02:00 -0800638 /*
Ian Rogersff1ed472011-09-20 13:46:24 -0700639 * Entry from managed code that calls artHandleFillArrayDataFromCode and delivers exception on
640 * failure.
641 */
Ian Rogers832336b2014-10-08 15:35:22 -0700642TWO_ARG_REF_DOWNCALL art_quick_handle_fill_data, artHandleFillArrayDataFromCode, RETURN_IF_RESULT_IS_ZERO_OR_DELIVER
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700643
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700644 /*
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700645 * Entry from managed code that calls artLockObjectFromCode, may block for GC. r0 holds the
646 * possibly null object to lock.
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700647 */
Ian Rogers9329bbb2013-02-08 19:56:30 -0800648 .extern artLockObjectFromCode
Ian Rogers468532e2013-08-05 10:56:33 -0700649ENTRY art_quick_lock_object
Ian Rogers5d885c82014-02-21 20:06:23 -0800650 cbz r0, .Lslow_lock
651.Lretry_lock:
Mathieu Chartier4e6a31e2013-10-31 10:35:05 -0700652 ldr r2, [r9, #THREAD_ID_OFFSET]
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700653 ldrex r1, [r0, #MIRROR_OBJECT_LOCK_WORD_OFFSET]
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800654 mov r3, r1
Mathieu Chartier36a270a2016-07-28 18:08:51 -0700655 and r3, #LOCK_WORD_GC_STATE_MASK_SHIFTED_TOGGLED @ zero the gc bits
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800656 cbnz r3, .Lnot_unlocked @ already thin locked
657 @ unlocked case - r1: original lock word that's zero except for the read barrier bits.
658 orr r2, r1, r2 @ r2 holds thread id with count of 0 with preserved read barrier bits
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700659 strex r3, r2, [r0, #MIRROR_OBJECT_LOCK_WORD_OFFSET]
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800660 cbnz r3, .Llock_strex_fail @ store failed, retry
Andreas Gampe675967d2014-05-14 16:28:34 -0700661 dmb ish @ full (LoadLoad|LoadStore) memory barrier
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700662 bx lr
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800663.Lnot_unlocked: @ r1: original lock word, r2: thread_id with count of 0 and zero read barrier bits
664 lsr r3, r1, LOCK_WORD_STATE_SHIFT
Ian Rogers5d885c82014-02-21 20:06:23 -0800665 cbnz r3, .Lslow_lock @ if either of the top two bits are set, go slow path
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700666 eor r2, r1, r2 @ lock_word.ThreadId() ^ self->ThreadId()
667 uxth r2, r2 @ zero top 16 bits
Ian Rogers5d885c82014-02-21 20:06:23 -0800668 cbnz r2, .Lslow_lock @ lock word and self thread id's match -> recursive lock
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700669 @ else contention, go to slow path
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800670 mov r3, r1 @ copy the lock word to check count overflow.
Mathieu Chartier36a270a2016-07-28 18:08:51 -0700671 and r3, #LOCK_WORD_GC_STATE_MASK_SHIFTED_TOGGLED @ zero the gc bits.
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800672 add r2, r3, #LOCK_WORD_THIN_LOCK_COUNT_ONE @ increment count in lock word placing in r2 to check overflow
Mathieu Chartier36a270a2016-07-28 18:08:51 -0700673 lsr r3, r2, #LOCK_WORD_GC_STATE_SHIFT @ if the first gc state bit is set, we overflowed.
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800674 cbnz r3, .Lslow_lock @ if we overflow the count go slow path
675 add r2, r1, #LOCK_WORD_THIN_LOCK_COUNT_ONE @ increment count for real
676 strex r3, r2, [r0, #MIRROR_OBJECT_LOCK_WORD_OFFSET] @ strex necessary for read barrier bits
677 cbnz r3, .Llock_strex_fail @ strex failed, retry
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700678 bx lr
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800679.Llock_strex_fail:
680 b .Lretry_lock @ retry
Ian Rogers5d885c82014-02-21 20:06:23 -0800681.Lslow_lock:
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100682 SETUP_SAVE_REFS_ONLY_FRAME r1 @ save callee saves in case we block
Ian Rogers4f0d07c2011-10-06 23:38:47 -0700683 mov r1, r9 @ pass Thread::Current
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700684 bl artLockObjectFromCode @ (Object* obj, Thread*)
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100685 RESTORE_SAVE_REFS_ONLY_FRAME
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700686 RETURN_IF_RESULT_IS_ZERO
687 DELIVER_PENDING_EXCEPTION
Ian Rogers468532e2013-08-05 10:56:33 -0700688END art_quick_lock_object
Ian Rogersff1ed472011-09-20 13:46:24 -0700689
Andreas Gampec7ed09b2016-04-25 20:08:55 -0700690ENTRY art_quick_lock_object_no_inline
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100691 SETUP_SAVE_REFS_ONLY_FRAME r1 @ save callee saves in case we block
Andreas Gampec7ed09b2016-04-25 20:08:55 -0700692 mov r1, r9 @ pass Thread::Current
693 bl artLockObjectFromCode @ (Object* obj, Thread*)
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100694 RESTORE_SAVE_REFS_ONLY_FRAME
Andreas Gampec7ed09b2016-04-25 20:08:55 -0700695 RETURN_IF_RESULT_IS_ZERO
696 DELIVER_PENDING_EXCEPTION
697END art_quick_lock_object_no_inline
698
Ian Rogersff1ed472011-09-20 13:46:24 -0700699 /*
700 * Entry from managed code that calls artUnlockObjectFromCode and delivers exception on failure.
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700701 * r0 holds the possibly null object to lock.
Ian Rogersff1ed472011-09-20 13:46:24 -0700702 */
Ian Rogers9329bbb2013-02-08 19:56:30 -0800703 .extern artUnlockObjectFromCode
Ian Rogers468532e2013-08-05 10:56:33 -0700704ENTRY art_quick_unlock_object
Ian Rogers5d885c82014-02-21 20:06:23 -0800705 cbz r0, .Lslow_unlock
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800706.Lretry_unlock:
707#ifndef USE_READ_BARRIER
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700708 ldr r1, [r0, #MIRROR_OBJECT_LOCK_WORD_OFFSET]
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800709#else
710 ldrex r1, [r0, #MIRROR_OBJECT_LOCK_WORD_OFFSET] @ Need to use atomic instructions for read barrier
711#endif
712 lsr r2, r1, #LOCK_WORD_STATE_SHIFT
Ian Rogers5d885c82014-02-21 20:06:23 -0800713 cbnz r2, .Lslow_unlock @ if either of the top two bits are set, go slow path
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700714 ldr r2, [r9, #THREAD_ID_OFFSET]
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800715 mov r3, r1 @ copy lock word to check thread id equality
Mathieu Chartier36a270a2016-07-28 18:08:51 -0700716 and r3, #LOCK_WORD_GC_STATE_MASK_SHIFTED_TOGGLED @ zero the gc bits
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800717 eor r3, r3, r2 @ lock_word.ThreadId() ^ self->ThreadId()
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700718 uxth r3, r3 @ zero top 16 bits
Ian Rogers5d885c82014-02-21 20:06:23 -0800719 cbnz r3, .Lslow_unlock @ do lock word and self thread id's match?
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800720 mov r3, r1 @ copy lock word to detect transition to unlocked
Mathieu Chartier36a270a2016-07-28 18:08:51 -0700721 and r3, #LOCK_WORD_GC_STATE_MASK_SHIFTED_TOGGLED @ zero the gc bits
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800722 cmp r3, #LOCK_WORD_THIN_LOCK_COUNT_ONE
Ian Rogers5d885c82014-02-21 20:06:23 -0800723 bpl .Lrecursive_thin_unlock
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800724 @ transition to unlocked
725 mov r3, r1
Mathieu Chartier36a270a2016-07-28 18:08:51 -0700726 and r3, #LOCK_WORD_GC_STATE_MASK_SHIFTED @ r3: zero except for the preserved gc bits
Andreas Gampe675967d2014-05-14 16:28:34 -0700727 dmb ish @ full (LoadStore|StoreStore) memory barrier
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800728#ifndef USE_READ_BARRIER
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700729 str r3, [r0, #MIRROR_OBJECT_LOCK_WORD_OFFSET]
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800730#else
731 strex r2, r3, [r0, #MIRROR_OBJECT_LOCK_WORD_OFFSET] @ strex necessary for read barrier bits
732 cbnz r2, .Lunlock_strex_fail @ store failed, retry
733#endif
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700734 bx lr
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800735.Lrecursive_thin_unlock: @ r1: original lock word
736 sub r1, r1, #LOCK_WORD_THIN_LOCK_COUNT_ONE @ decrement count
737#ifndef USE_READ_BARRIER
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700738 str r1, [r0, #MIRROR_OBJECT_LOCK_WORD_OFFSET]
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800739#else
740 strex r2, r1, [r0, #MIRROR_OBJECT_LOCK_WORD_OFFSET] @ strex necessary for read barrier bits
741 cbnz r2, .Lunlock_strex_fail @ store failed, retry
742#endif
Ian Rogersd9c4fc92013-10-01 19:45:43 -0700743 bx lr
Hiroshi Yamauchie15ea082015-02-09 17:11:42 -0800744.Lunlock_strex_fail:
745 b .Lretry_unlock @ retry
Ian Rogers5d885c82014-02-21 20:06:23 -0800746.Lslow_unlock:
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700747 @ save callee saves in case exception allocation triggers GC
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100748 SETUP_SAVE_REFS_ONLY_FRAME r1
Ian Rogers637859c2013-08-27 14:35:54 -0700749 mov r1, r9 @ pass Thread::Current
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700750 bl artUnlockObjectFromCode @ (Object* obj, Thread*)
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100751 RESTORE_SAVE_REFS_ONLY_FRAME
Ian Rogers637859c2013-08-27 14:35:54 -0700752 RETURN_IF_RESULT_IS_ZERO
Ian Rogersce9eca62011-10-07 17:11:03 -0700753 DELIVER_PENDING_EXCEPTION
Ian Rogers468532e2013-08-05 10:56:33 -0700754END art_quick_unlock_object
Ian Rogersff1ed472011-09-20 13:46:24 -0700755
Andreas Gampec7ed09b2016-04-25 20:08:55 -0700756ENTRY art_quick_unlock_object_no_inline
757 @ save callee saves in case exception allocation triggers GC
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100758 SETUP_SAVE_REFS_ONLY_FRAME r1
Andreas Gampec7ed09b2016-04-25 20:08:55 -0700759 mov r1, r9 @ pass Thread::Current
760 bl artUnlockObjectFromCode @ (Object* obj, Thread*)
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100761 RESTORE_SAVE_REFS_ONLY_FRAME
Andreas Gampec7ed09b2016-04-25 20:08:55 -0700762 RETURN_IF_RESULT_IS_ZERO
763 DELIVER_PENDING_EXCEPTION
764END art_quick_unlock_object_no_inline
765
Ian Rogersff1ed472011-09-20 13:46:24 -0700766 /*
Mathieu Chartierb99f4d62016-11-07 16:17:26 -0800767 * Entry from managed code that calls artInstanceOfFromCode and on failure calls
768 * artThrowClassCastExceptionForObject.
Ian Rogersff1ed472011-09-20 13:46:24 -0700769 */
Mathieu Chartierb99f4d62016-11-07 16:17:26 -0800770 .extern artInstanceOfFromCode
771 .extern artThrowClassCastExceptionForObject
772ENTRY art_quick_check_instance_of
Ian Rogersa9a82542013-10-04 11:17:26 -0700773 push {r0-r1, lr} @ save arguments, link register and pad
Ian Rogersa9a82542013-10-04 11:17:26 -0700774 .cfi_adjust_cfa_offset 12
775 .cfi_rel_offset r0, 0
776 .cfi_rel_offset r1, 4
777 .cfi_rel_offset lr, 8
778 sub sp, #4
Ian Rogersa9a82542013-10-04 11:17:26 -0700779 .cfi_adjust_cfa_offset 4
Mathieu Chartierb99f4d62016-11-07 16:17:26 -0800780 bl artInstanceOfFromCode
Ian Rogers5d885c82014-02-21 20:06:23 -0800781 cbz r0, .Lthrow_class_cast_exception
Ian Rogersa9a82542013-10-04 11:17:26 -0700782 add sp, #4
783 .cfi_adjust_cfa_offset -4
784 pop {r0-r1, pc}
Christopher Ferrisd0a0b3e2014-10-30 19:04:13 -0700785 .cfi_adjust_cfa_offset 4 @ Reset unwind info so following code unwinds.
Ian Rogers5d885c82014-02-21 20:06:23 -0800786.Lthrow_class_cast_exception:
Ian Rogersa9a82542013-10-04 11:17:26 -0700787 add sp, #4
788 .cfi_adjust_cfa_offset -4
789 pop {r0-r1, lr}
Christopher Ferrisd0a0b3e2014-10-30 19:04:13 -0700790 .cfi_adjust_cfa_offset -12
Dave Allisonbbb32c22013-11-05 18:25:18 -0800791 .cfi_restore r0
792 .cfi_restore r1
Christopher Ferrisd0a0b3e2014-10-30 19:04:13 -0700793 .cfi_restore lr
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100794 SETUP_SAVE_ALL_CALLEE_SAVES_FRAME r2 @ save all registers as basis for long jump context
Ian Rogersa9a82542013-10-04 11:17:26 -0700795 mov r2, r9 @ pass Thread::Current
Mathieu Chartierb99f4d62016-11-07 16:17:26 -0800796 bl artThrowClassCastExceptionForObject @ (Object*, Class*, Thread*)
Ian Rogersa9a82542013-10-04 11:17:26 -0700797 bkpt
Mathieu Chartierb99f4d62016-11-07 16:17:26 -0800798END art_quick_check_instance_of
buzbee4a3164f2011-09-03 11:25:10 -0700799
Man Cao1aee9002015-07-14 22:31:42 -0700800// Restore rReg's value from [sp, #offset] if rReg is not the same as rExclude.
801.macro POP_REG_NE rReg, offset, rExclude
802 .ifnc \rReg, \rExclude
803 ldr \rReg, [sp, #\offset] @ restore rReg
804 .cfi_restore \rReg
805 .endif
806.endm
807
Roland Levillain4359e612016-07-20 11:32:19 +0100808// Save rReg's value to [sp, #offset].
809.macro PUSH_REG rReg, offset
810 str \rReg, [sp, #\offset] @ save rReg
811 .cfi_rel_offset \rReg, \offset
812.endm
813
Man Cao1aee9002015-07-14 22:31:42 -0700814 /*
815 * Macro to insert read barrier, only used in art_quick_aput_obj.
816 * rObj and rDest are registers, offset is a defined literal such as MIRROR_OBJECT_CLASS_OFFSET.
817 * TODO: When read barrier has a fast path, add heap unpoisoning support for the fast path.
818 */
819.macro READ_BARRIER rDest, rObj, offset
820#ifdef USE_READ_BARRIER
821 push {r0-r3, ip, lr} @ 6 words for saved registers (used in art_quick_aput_obj)
822 .cfi_adjust_cfa_offset 24
823 .cfi_rel_offset r0, 0
824 .cfi_rel_offset r1, 4
825 .cfi_rel_offset r2, 8
826 .cfi_rel_offset r3, 12
827 .cfi_rel_offset ip, 16
828 .cfi_rel_offset lr, 20
829 sub sp, #8 @ push padding
830 .cfi_adjust_cfa_offset 8
Man Cao63069212015-08-21 15:51:39 -0700831 @ mov r0, \rRef @ pass ref in r0 (no-op for now since parameter ref is unused)
Man Cao1aee9002015-07-14 22:31:42 -0700832 .ifnc \rObj, r1
833 mov r1, \rObj @ pass rObj
834 .endif
835 mov r2, #\offset @ pass offset
836 bl artReadBarrierSlow @ artReadBarrierSlow(ref, rObj, offset)
837 @ No need to unpoison return value in r0, artReadBarrierSlow() would do the unpoisoning.
838 .ifnc \rDest, r0
839 mov \rDest, r0 @ save return value in rDest
840 .endif
841 add sp, #8 @ pop padding
842 .cfi_adjust_cfa_offset -8
843 POP_REG_NE r0, 0, \rDest @ conditionally restore saved registers
844 POP_REG_NE r1, 4, \rDest
845 POP_REG_NE r2, 8, \rDest
846 POP_REG_NE r3, 12, \rDest
847 POP_REG_NE ip, 16, \rDest
848 add sp, #20
849 .cfi_adjust_cfa_offset -20
850 pop {lr} @ restore lr
851 .cfi_adjust_cfa_offset -4
852 .cfi_restore lr
853#else
854 ldr \rDest, [\rObj, #\offset]
855 UNPOISON_HEAP_REF \rDest
856#endif // USE_READ_BARRIER
857.endm
858
Ian Rogerse51a5112011-09-23 14:16:35 -0700859 /*
Ian Rogersa9a82542013-10-04 11:17:26 -0700860 * Entry from managed code for array put operations of objects where the value being stored
861 * needs to be checked for compatibility.
862 * r0 = array, r1 = index, r2 = value
Ian Rogerse51a5112011-09-23 14:16:35 -0700863 */
Ian Rogersa9a82542013-10-04 11:17:26 -0700864ENTRY art_quick_aput_obj_with_null_and_bound_check
865 tst r0, r0
Dan Albertd8426482014-08-07 17:40:03 -0700866 bne art_quick_aput_obj_with_bound_check
Ian Rogersa9a82542013-10-04 11:17:26 -0700867 b art_quick_throw_null_pointer_exception
868END art_quick_aput_obj_with_null_and_bound_check
869
Dan Albert58bea4a2014-08-09 18:08:07 -0700870 .hidden art_quick_aput_obj_with_bound_check
Ian Rogersa9a82542013-10-04 11:17:26 -0700871ENTRY art_quick_aput_obj_with_bound_check
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700872 ldr r3, [r0, #MIRROR_ARRAY_LENGTH_OFFSET]
Ian Rogersa9a82542013-10-04 11:17:26 -0700873 cmp r3, r1
Dan Albertd8426482014-08-07 17:40:03 -0700874 bhi art_quick_aput_obj
Ian Rogersa9a82542013-10-04 11:17:26 -0700875 mov r0, r1
876 mov r1, r3
877 b art_quick_throw_array_bounds
878END art_quick_aput_obj_with_bound_check
879
Man Cao1aee9002015-07-14 22:31:42 -0700880#ifdef USE_READ_BARRIER
881 .extern artReadBarrierSlow
882#endif
Dan Albert58bea4a2014-08-09 18:08:07 -0700883 .hidden art_quick_aput_obj
Ian Rogersa9a82542013-10-04 11:17:26 -0700884ENTRY art_quick_aput_obj
Man Cao1aee9002015-07-14 22:31:42 -0700885#ifdef USE_READ_BARRIER
886 @ The offset to .Ldo_aput_null is too large to use cbz due to expansion from READ_BARRIER macro.
887 tst r2, r2
888 beq .Ldo_aput_null
889#else
Ian Rogers5d885c82014-02-21 20:06:23 -0800890 cbz r2, .Ldo_aput_null
Man Cao1aee9002015-07-14 22:31:42 -0700891#endif // USE_READ_BARRIER
892 READ_BARRIER r3, r0, MIRROR_OBJECT_CLASS_OFFSET
893 READ_BARRIER ip, r2, MIRROR_OBJECT_CLASS_OFFSET
894 READ_BARRIER r3, r3, MIRROR_CLASS_COMPONENT_TYPE_OFFSET
Ian Rogersa9a82542013-10-04 11:17:26 -0700895 cmp r3, ip @ value's type == array's component type - trivial assignability
Ian Rogers5d885c82014-02-21 20:06:23 -0800896 bne .Lcheck_assignability
897.Ldo_aput:
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700898 add r3, r0, #MIRROR_OBJECT_ARRAY_DATA_OFFSET
Hiroshi Yamauchibfa5eb62015-05-29 15:04:41 -0700899 POISON_HEAP_REF r2
Ian Rogersa9a82542013-10-04 11:17:26 -0700900 str r2, [r3, r1, lsl #2]
901 ldr r3, [r9, #THREAD_CARD_TABLE_OFFSET]
902 lsr r0, r0, #7
903 strb r3, [r3, r0]
904 blx lr
Ian Rogers5d885c82014-02-21 20:06:23 -0800905.Ldo_aput_null:
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700906 add r3, r0, #MIRROR_OBJECT_ARRAY_DATA_OFFSET
Ian Rogersa9a82542013-10-04 11:17:26 -0700907 str r2, [r3, r1, lsl #2]
908 blx lr
Ian Rogers5d885c82014-02-21 20:06:23 -0800909.Lcheck_assignability:
910 push {r0-r2, lr} @ save arguments
Andreas Gampe525cde22014-04-22 15:44:50 -0700911 .cfi_adjust_cfa_offset 16
912 .cfi_rel_offset r0, 0
913 .cfi_rel_offset r1, 4
914 .cfi_rel_offset r2, 8
915 .cfi_rel_offset lr, 12
Ian Rogersa9a82542013-10-04 11:17:26 -0700916 mov r1, ip
917 mov r0, r3
918 bl artIsAssignableFromCode
Ian Rogers5d885c82014-02-21 20:06:23 -0800919 cbz r0, .Lthrow_array_store_exception
Ian Rogersa9a82542013-10-04 11:17:26 -0700920 pop {r0-r2, lr}
Andreas Gampe525cde22014-04-22 15:44:50 -0700921 .cfi_restore r0
922 .cfi_restore r1
923 .cfi_restore r2
924 .cfi_restore lr
925 .cfi_adjust_cfa_offset -16
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700926 add r3, r0, #MIRROR_OBJECT_ARRAY_DATA_OFFSET
Hiroshi Yamauchibfa5eb62015-05-29 15:04:41 -0700927 POISON_HEAP_REF r2
Ian Rogersa9a82542013-10-04 11:17:26 -0700928 str r2, [r3, r1, lsl #2]
929 ldr r3, [r9, #THREAD_CARD_TABLE_OFFSET]
930 lsr r0, r0, #7
931 strb r3, [r3, r0]
932 blx lr
Ian Rogers5d885c82014-02-21 20:06:23 -0800933.Lthrow_array_store_exception:
Ian Rogersa9a82542013-10-04 11:17:26 -0700934 pop {r0-r2, lr}
Christopher Ferrisd0a0b3e2014-10-30 19:04:13 -0700935 /* No need to repeat restore cfi directives, the ones above apply here. */
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100936 SETUP_SAVE_ALL_CALLEE_SAVES_FRAME r3
Ian Rogersa9a82542013-10-04 11:17:26 -0700937 mov r1, r2
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700938 mov r2, r9 @ pass Thread::Current
Vladimir Marko908eb222016-09-14 10:29:18 +0100939 bl artThrowArrayStoreException @ (Class*, Class*, Thread*)
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700940 bkpt @ unreached
Ian Rogersa9a82542013-10-04 11:17:26 -0700941END art_quick_aput_obj
Ian Rogerse51a5112011-09-23 14:16:35 -0700942
Andreas Gampe1cc7dba2014-12-17 18:43:01 -0800943// Macro to facilitate adding new allocation entrypoints.
Vladimir Marko5ea536a2015-04-20 20:11:30 +0100944.macro ONE_ARG_DOWNCALL name, entrypoint, return
945 .extern \entrypoint
946ENTRY \name
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100947 SETUP_SAVE_REFS_ONLY_FRAME r1 @ save callee saves in case of GC
Vladimir Marko5ea536a2015-04-20 20:11:30 +0100948 mov r1, r9 @ pass Thread::Current
949 bl \entrypoint @ (uint32_t type_idx, Method* method, Thread*)
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100950 RESTORE_SAVE_REFS_ONLY_FRAME
Vladimir Marko5ea536a2015-04-20 20:11:30 +0100951 \return
952END \name
953.endm
954
955// Macro to facilitate adding new allocation entrypoints.
Andreas Gampe1cc7dba2014-12-17 18:43:01 -0800956.macro TWO_ARG_DOWNCALL name, entrypoint, return
957 .extern \entrypoint
958ENTRY \name
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100959 SETUP_SAVE_REFS_ONLY_FRAME r2 @ save callee saves in case of GC
Andreas Gampe1cc7dba2014-12-17 18:43:01 -0800960 mov r2, r9 @ pass Thread::Current
961 bl \entrypoint @ (uint32_t type_idx, Method* method, Thread*)
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100962 RESTORE_SAVE_REFS_ONLY_FRAME
Andreas Gampe1cc7dba2014-12-17 18:43:01 -0800963 \return
964END \name
965.endm
Ian Rogersce9eca62011-10-07 17:11:03 -0700966
Andreas Gampe1cc7dba2014-12-17 18:43:01 -0800967// Macro to facilitate adding new array allocation entrypoints.
968.macro THREE_ARG_DOWNCALL name, entrypoint, return
969 .extern \entrypoint
970ENTRY \name
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100971 SETUP_SAVE_REFS_ONLY_FRAME r3 @ save callee saves in case of GC
Andreas Gampe1cc7dba2014-12-17 18:43:01 -0800972 mov r3, r9 @ pass Thread::Current
973 @ (uint32_t type_idx, Method* method, int32_t component_count, Thread*)
974 bl \entrypoint
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100975 RESTORE_SAVE_REFS_ONLY_FRAME
Andreas Gampe1cc7dba2014-12-17 18:43:01 -0800976 \return
977END \name
978.endm
Ian Rogers28ad40d2011-10-27 15:19:26 -0700979
Jeff Hao848f70a2014-01-15 13:49:50 -0800980// Macro to facilitate adding new allocation entrypoints.
981.macro FOUR_ARG_DOWNCALL name, entrypoint, return
982 .extern \entrypoint
983ENTRY \name
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100984 SETUP_SAVE_REFS_ONLY_FRAME r12 @ save callee saves in case of GC
Jeff Hao848f70a2014-01-15 13:49:50 -0800985 str r9, [sp, #-16]! @ expand the frame and pass Thread::Current
Jeff Hao848f70a2014-01-15 13:49:50 -0800986 .cfi_adjust_cfa_offset 16
987 bl \entrypoint
988 add sp, #16 @ strip the extra frame
989 .cfi_adjust_cfa_offset -16
Vladimir Markofd36f1f2016-08-03 18:49:58 +0100990 RESTORE_SAVE_REFS_ONLY_FRAME
Jeff Hao848f70a2014-01-15 13:49:50 -0800991 \return
992END \name
993.endm
994
Vladimir Marko5ea536a2015-04-20 20:11:30 +0100995ONE_ARG_DOWNCALL art_quick_initialize_static_storage, artInitializeStaticStorageFromCode, RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
996ONE_ARG_DOWNCALL art_quick_initialize_type, artInitializeTypeFromCode, RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
997ONE_ARG_DOWNCALL art_quick_initialize_type_and_verify_access, artInitializeTypeAndVerifyAccessFromCode, RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
Ian Rogersb093c6b2011-10-31 16:19:55 -0700998
Ian Rogersce9eca62011-10-07 17:11:03 -0700999 /*
Fred Shih37f05ef2014-07-16 18:38:08 -07001000 * Called by managed code to resolve a static field and load a non-wide value.
Ian Rogersce9eca62011-10-07 17:11:03 -07001001 */
Fred Shih37f05ef2014-07-16 18:38:08 -07001002ONE_ARG_REF_DOWNCALL art_quick_get_byte_static, artGetByteStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION_R1
1003ONE_ARG_REF_DOWNCALL art_quick_get_boolean_static, artGetBooleanStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION_R1
1004ONE_ARG_REF_DOWNCALL art_quick_get_short_static, artGetShortStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION_R1
1005ONE_ARG_REF_DOWNCALL art_quick_get_char_static, artGetCharStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION_R1
1006ONE_ARG_REF_DOWNCALL art_quick_get32_static, artGet32StaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION_R1
1007ONE_ARG_REF_DOWNCALL art_quick_get_obj_static, artGetObjStaticFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION_R1
Ian Rogersce9eca62011-10-07 17:11:03 -07001008 /*
Ian Rogers57b86d42012-03-27 16:05:41 -07001009 * Called by managed code to resolve a static field and load a 64-bit primitive value.
Ian Rogersce9eca62011-10-07 17:11:03 -07001010 */
Ian Rogers9329bbb2013-02-08 19:56:30 -08001011 .extern artGet64StaticFromCode
Ian Rogers468532e2013-08-05 10:56:33 -07001012ENTRY art_quick_get64_static
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001013 SETUP_SAVE_REFS_ONLY_FRAME r2 @ save callee saves in case of GC
1014 ldr r1, [sp, #FRAME_SIZE_SAVE_REFS_ONLY] @ pass referrer
Ian Rogersce9eca62011-10-07 17:11:03 -07001015 mov r2, r9 @ pass Thread::Current
Ian Rogers1d8cdbc2014-09-22 22:51:09 -07001016 bl artGet64StaticFromCode @ (uint32_t field_idx, const Method* referrer, Thread*)
Ian Rogers637859c2013-08-27 14:35:54 -07001017 ldr r2, [r9, #THREAD_EXCEPTION_OFFSET] @ load Thread::Current()->exception_
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001018 RESTORE_SAVE_REFS_ONLY_FRAME
Ian Rogers637859c2013-08-27 14:35:54 -07001019 cbnz r2, 1f @ success if no exception pending
1020 bx lr @ return on success
10211:
Ian Rogersce9eca62011-10-07 17:11:03 -07001022 DELIVER_PENDING_EXCEPTION
Ian Rogers468532e2013-08-05 10:56:33 -07001023END art_quick_get64_static
Ian Rogersce9eca62011-10-07 17:11:03 -07001024
Ian Rogersce9eca62011-10-07 17:11:03 -07001025 /*
Fred Shih37f05ef2014-07-16 18:38:08 -07001026 * Called by managed code to resolve an instance field and load a non-wide value.
Ian Rogersce9eca62011-10-07 17:11:03 -07001027 */
Fred Shih37f05ef2014-07-16 18:38:08 -07001028TWO_ARG_REF_DOWNCALL art_quick_get_byte_instance, artGetByteInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION_R1
1029TWO_ARG_REF_DOWNCALL art_quick_get_boolean_instance, artGetBooleanInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION_R1
1030TWO_ARG_REF_DOWNCALL art_quick_get_short_instance, artGetShortInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION_R1
1031TWO_ARG_REF_DOWNCALL art_quick_get_char_instance, artGetCharInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION_R1
1032TWO_ARG_REF_DOWNCALL art_quick_get32_instance, artGet32InstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION_R1
1033TWO_ARG_REF_DOWNCALL art_quick_get_obj_instance, artGetObjInstanceFromCode, RETURN_OR_DELIVER_PENDING_EXCEPTION_R1
Ian Rogers1bddec32012-02-04 12:27:34 -08001034 /*
Ian Rogers57b86d42012-03-27 16:05:41 -07001035 * Called by managed code to resolve an instance field and load a 64-bit primitive value.
Ian Rogers1bddec32012-02-04 12:27:34 -08001036 */
Ian Rogers9329bbb2013-02-08 19:56:30 -08001037 .extern artGet64InstanceFromCode
Ian Rogers468532e2013-08-05 10:56:33 -07001038ENTRY art_quick_get64_instance
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001039 SETUP_SAVE_REFS_ONLY_FRAME r2 @ save callee saves in case of GC
1040 ldr r2, [sp, #FRAME_SIZE_SAVE_REFS_ONLY] @ pass referrer
Ian Rogers1bddec32012-02-04 12:27:34 -08001041 mov r3, r9 @ pass Thread::Current
Ian Rogers1d8cdbc2014-09-22 22:51:09 -07001042 bl artGet64InstanceFromCode @ (field_idx, Object*, referrer, Thread*)
Ian Rogers637859c2013-08-27 14:35:54 -07001043 ldr r2, [r9, #THREAD_EXCEPTION_OFFSET] @ load Thread::Current()->exception_
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001044 RESTORE_SAVE_REFS_ONLY_FRAME
Ian Rogers637859c2013-08-27 14:35:54 -07001045 cbnz r2, 1f @ success if no exception pending
1046 bx lr @ return on success
10471:
Ian Rogers1bddec32012-02-04 12:27:34 -08001048 DELIVER_PENDING_EXCEPTION
Ian Rogers468532e2013-08-05 10:56:33 -07001049END art_quick_get64_instance
Ian Rogers1bddec32012-02-04 12:27:34 -08001050
Ian Rogers1bddec32012-02-04 12:27:34 -08001051 /*
Fred Shih37f05ef2014-07-16 18:38:08 -07001052 * Called by managed code to resolve a static field and store a non-wide value.
Ian Rogers1bddec32012-02-04 12:27:34 -08001053 */
Fred Shih37f05ef2014-07-16 18:38:08 -07001054TWO_ARG_REF_DOWNCALL art_quick_set8_static, artSet8StaticFromCode, RETURN_IF_RESULT_IS_ZERO_OR_DELIVER
1055TWO_ARG_REF_DOWNCALL art_quick_set16_static, artSet16StaticFromCode, RETURN_IF_RESULT_IS_ZERO_OR_DELIVER
1056TWO_ARG_REF_DOWNCALL art_quick_set32_static, artSet32StaticFromCode, RETURN_IF_RESULT_IS_ZERO_OR_DELIVER
1057TWO_ARG_REF_DOWNCALL art_quick_set_obj_static, artSetObjStaticFromCode, RETURN_IF_RESULT_IS_ZERO_OR_DELIVER
Ian Rogersce9eca62011-10-07 17:11:03 -07001058 /*
Ian Rogers57b86d42012-03-27 16:05:41 -07001059 * Called by managed code to resolve a static field and store a 64-bit primitive value.
Calin Juravlee460d1d2015-09-29 04:52:17 +01001060 * On entry r0 holds field index, r2:r3 hold new_val
Ian Rogersce9eca62011-10-07 17:11:03 -07001061 */
Ian Rogers9329bbb2013-02-08 19:56:30 -08001062 .extern artSet64StaticFromCode
Ian Rogers468532e2013-08-05 10:56:33 -07001063ENTRY art_quick_set64_static
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001064 SETUP_SAVE_REFS_ONLY_FRAME r1 @ save callee saves in case of GC
Calin Juravlee460d1d2015-09-29 04:52:17 +01001065 @ r2:r3 contain the wide argument
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001066 ldr r1, [sp, #FRAME_SIZE_SAVE_REFS_ONLY] @ pass referrer
Ian Rogers1d8cdbc2014-09-22 22:51:09 -07001067 str r9, [sp, #-16]! @ expand the frame and pass Thread::Current
Ian Rogers1d8cdbc2014-09-22 22:51:09 -07001068 .cfi_adjust_cfa_offset 16
1069 bl artSet64StaticFromCode @ (field_idx, referrer, new_val, Thread*)
Ian Rogersce9eca62011-10-07 17:11:03 -07001070 add sp, #16 @ release out args
Dave Allisonbbb32c22013-11-05 18:25:18 -08001071 .cfi_adjust_cfa_offset -16
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001072 RESTORE_SAVE_REFS_ONLY_FRAME @ TODO: we can clearly save an add here
Ian Rogers637859c2013-08-27 14:35:54 -07001073 RETURN_IF_RESULT_IS_ZERO
Ian Rogersce9eca62011-10-07 17:11:03 -07001074 DELIVER_PENDING_EXCEPTION
Ian Rogers468532e2013-08-05 10:56:33 -07001075END art_quick_set64_static
Ian Rogersce9eca62011-10-07 17:11:03 -07001076
Ian Rogersce9eca62011-10-07 17:11:03 -07001077 /*
Fred Shih37f05ef2014-07-16 18:38:08 -07001078 * Called by managed code to resolve an instance field and store a non-wide value.
Ian Rogersce9eca62011-10-07 17:11:03 -07001079 */
Fred Shih37f05ef2014-07-16 18:38:08 -07001080THREE_ARG_REF_DOWNCALL art_quick_set8_instance, artSet8InstanceFromCode, RETURN_IF_RESULT_IS_ZERO_OR_DELIVER
1081THREE_ARG_REF_DOWNCALL art_quick_set16_instance, artSet16InstanceFromCode, RETURN_IF_RESULT_IS_ZERO_OR_DELIVER
1082THREE_ARG_REF_DOWNCALL art_quick_set32_instance, artSet32InstanceFromCode, RETURN_IF_RESULT_IS_ZERO_OR_DELIVER
1083THREE_ARG_REF_DOWNCALL art_quick_set_obj_instance, artSetObjInstanceFromCode, RETURN_IF_RESULT_IS_ZERO_OR_DELIVER
Ian Rogers1bddec32012-02-04 12:27:34 -08001084 /*
Ian Rogers57b86d42012-03-27 16:05:41 -07001085 * Called by managed code to resolve an instance field and store a 64-bit primitive value.
Ian Rogers1bddec32012-02-04 12:27:34 -08001086 */
Fred Shih37f05ef2014-07-16 18:38:08 -07001087 .extern artSet64InstanceFromCode
Ian Rogers468532e2013-08-05 10:56:33 -07001088ENTRY art_quick_set64_instance
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001089 SETUP_SAVE_REFS_ONLY_FRAME r12 @ save callee saves in case of GC
Calin Juravlee460d1d2015-09-29 04:52:17 +01001090 @ r2:r3 contain the wide argument
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001091 ldr r12, [sp, #FRAME_SIZE_SAVE_REFS_ONLY] @ pass referrer
Ian Rogers1d8cdbc2014-09-22 22:51:09 -07001092 str r9, [sp, #-12]! @ expand the frame and pass Thread::Current
Ian Rogers1d8cdbc2014-09-22 22:51:09 -07001093 .cfi_adjust_cfa_offset 12
1094 str r12, [sp, #-4]! @ expand the frame and pass the referrer
Ian Rogers1d8cdbc2014-09-22 22:51:09 -07001095 .cfi_adjust_cfa_offset 4
1096 bl artSet64InstanceFromCode @ (field_idx, Object*, new_val, Method* referrer, Thread*)
Ian Rogers1bddec32012-02-04 12:27:34 -08001097 add sp, #16 @ release out args
Ian Rogers9329bbb2013-02-08 19:56:30 -08001098 .cfi_adjust_cfa_offset -16
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001099 RESTORE_SAVE_REFS_ONLY_FRAME @ TODO: we can clearly save an add here
Ian Rogers637859c2013-08-27 14:35:54 -07001100 RETURN_IF_RESULT_IS_ZERO
Ian Rogers1bddec32012-02-04 12:27:34 -08001101 DELIVER_PENDING_EXCEPTION
Ian Rogers468532e2013-08-05 10:56:33 -07001102END art_quick_set64_instance
Ian Rogers1bddec32012-02-04 12:27:34 -08001103
Ian Rogers1bddec32012-02-04 12:27:34 -08001104 /*
Christina Wadsworth35ef14b2016-08-19 11:24:48 -07001105 * Entry from managed code to resolve a string, this stub will
1106 * check the dex cache for a matching string (the fast path), and if not found,
1107 * it will allocate a String and deliver an exception on error.
1108 * On success the String is returned. R0 holds the string index.
Brian Carlstromaded5f72011-10-07 17:15:04 -07001109 */
Christina Wadsworth35ef14b2016-08-19 11:24:48 -07001110
1111ENTRY art_quick_resolve_string
Nicolas Geoffrayfbc75db2016-11-10 15:30:47 +00001112 SETUP_SAVE_EVERYTHING_FRAME r1 @ save everything in case of GC
Vladimir Marko94ce9c22016-09-30 14:50:51 +01001113 mov r1, r9 @ pass Thread::Current
1114 bl artResolveStringFromCode @ (uint32_t type_idx, Thread*)
1115 cbz r0, 1f @ If result is null, deliver the OOME.
1116 .cfi_remember_state
1117 RESTORE_SAVE_EVERYTHING_FRAME_KEEP_R0
Christina Wadsworth56ece932016-08-22 18:16:15 -07001118 bx lr
Vladimir Marko94ce9c22016-09-30 14:50:51 +01001119 .cfi_restore_state
11201:
1121 DELIVER_PENDING_EXCEPTION_FRAME_READY
Christina Wadsworth35ef14b2016-08-19 11:24:48 -07001122END art_quick_resolve_string
Ian Rogersb886da82011-09-23 16:27:54 -07001123
Mathieu Chartier7410f292013-11-24 13:17:35 -08001124// Generate the allocation entrypoints for each allocator.
Hiroshi Yamauchidc412b62015-10-15 12:26:57 -07001125GENERATE_ALLOC_ENTRYPOINTS_FOR_EACH_ALLOCATOR
Hiroshi Yamauchi7e1ce282015-12-11 15:46:19 -08001126
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001127// A hand-written override for GENERATE_ALLOC_ENTRYPOINTS_ALLOC_RESOLVED_OBJECT(_rosalloc, RosAlloc).
1128ENTRY art_quick_alloc_object_resolved_rosalloc
Hiroshi Yamauchidc412b62015-10-15 12:26:57 -07001129 // Fast path rosalloc allocation.
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001130 // r0: type/return value, r9: Thread::Current
1131 // r1, r2, r3, r12: free.
Hiroshi Yamauchidc412b62015-10-15 12:26:57 -07001132 ldr r3, [r9, #THREAD_LOCAL_ALLOC_STACK_TOP_OFFSET] // Check if the thread local
1133 // allocation stack has room.
1134 // TODO: consider using ldrd.
1135 ldr r12, [r9, #THREAD_LOCAL_ALLOC_STACK_END_OFFSET]
1136 cmp r3, r12
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001137 bhs .Lart_quick_alloc_object_resolved_rosalloc_slow_path
Hiroshi Yamauchidc412b62015-10-15 12:26:57 -07001138
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001139 ldr r3, [r0, #MIRROR_CLASS_OBJECT_SIZE_ALLOC_FAST_PATH_OFFSET] // Load the object size (r3)
Hiroshi Yamauchidc412b62015-10-15 12:26:57 -07001140 cmp r3, #ROSALLOC_MAX_THREAD_LOCAL_BRACKET_SIZE // Check if the size is for a thread
Mathieu Chartier161db1d2016-09-01 14:06:54 -07001141 // local allocation. Also does the
1142 // initialized and finalizable checks.
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001143 bhs .Lart_quick_alloc_object_resolved_rosalloc_slow_path
Hiroshi Yamauchidc412b62015-10-15 12:26:57 -07001144 // Compute the rosalloc bracket index
Mathieu Chartier161db1d2016-09-01 14:06:54 -07001145 // from the size. Since the size is
1146 // already aligned we can combine the
1147 // two shifts together.
1148 add r12, r9, r3, lsr #(ROSALLOC_BRACKET_QUANTUM_SIZE_SHIFT - POINTER_SIZE_SHIFT)
1149 // Subtract pointer size since ther
1150 // are no runs for 0 byte allocations
1151 // and the size is already aligned.
Hiroshi Yamauchidc412b62015-10-15 12:26:57 -07001152 // Load the rosalloc run (r12)
Mathieu Chartier161db1d2016-09-01 14:06:54 -07001153 ldr r12, [r12, #(THREAD_ROSALLOC_RUNS_OFFSET - __SIZEOF_POINTER__)]
Hiroshi Yamauchidc412b62015-10-15 12:26:57 -07001154 // Load the free list head (r3). This
1155 // will be the return val.
1156 ldr r3, [r12, #(ROSALLOC_RUN_FREE_LIST_OFFSET + ROSALLOC_RUN_FREE_LIST_HEAD_OFFSET)]
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001157 cbz r3, .Lart_quick_alloc_object_resolved_rosalloc_slow_path
Hiroshi Yamauchidc412b62015-10-15 12:26:57 -07001158 // "Point of no slow path". Won't go to the slow path from here on. OK to clobber r0 and r1.
1159 ldr r1, [r3, #ROSALLOC_SLOT_NEXT_OFFSET] // Load the next pointer of the head
1160 // and update the list head with the
1161 // next pointer.
1162 str r1, [r12, #(ROSALLOC_RUN_FREE_LIST_OFFSET + ROSALLOC_RUN_FREE_LIST_HEAD_OFFSET)]
1163 // Store the class pointer in the
1164 // header. This also overwrites the
1165 // next pointer. The offsets are
1166 // asserted to match.
1167#if ROSALLOC_SLOT_NEXT_OFFSET != MIRROR_OBJECT_CLASS_OFFSET
1168#error "Class pointer needs to overwrite next pointer."
1169#endif
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001170 POISON_HEAP_REF r0
1171 str r0, [r3, #MIRROR_OBJECT_CLASS_OFFSET]
Mathieu Chartier011dc2c2016-07-18 11:11:45 -07001172 // Fence. This is "ish" not "ishst" so
1173 // that it also ensures ordering of
1174 // the class status load with respect
1175 // to later accesses to the class
1176 // object. Alternatively we could use
1177 // "ishst" if we use load-acquire for
Mathieu Chartier161db1d2016-09-01 14:06:54 -07001178 // the object size load.
Mathieu Chartier011dc2c2016-07-18 11:11:45 -07001179 // Needs to be done before pushing on
1180 // allocation since Heap::VisitObjects
1181 // relies on seeing the class pointer.
1182 // b/28790624
1183 dmb ish
Hiroshi Yamauchidc412b62015-10-15 12:26:57 -07001184 // Push the new object onto the thread
1185 // local allocation stack and
1186 // increment the thread local
1187 // allocation stack top.
1188 ldr r1, [r9, #THREAD_LOCAL_ALLOC_STACK_TOP_OFFSET]
1189 str r3, [r1], #COMPRESSED_REFERENCE_SIZE // (Increment r1 as a side effect.)
1190 str r1, [r9, #THREAD_LOCAL_ALLOC_STACK_TOP_OFFSET]
1191 // Decrement the size of the free list
1192 ldr r1, [r12, #(ROSALLOC_RUN_FREE_LIST_OFFSET + ROSALLOC_RUN_FREE_LIST_SIZE_OFFSET)]
1193 sub r1, #1
1194 // TODO: consider combining this store
1195 // and the list head store above using
1196 // strd.
1197 str r1, [r12, #(ROSALLOC_RUN_FREE_LIST_OFFSET + ROSALLOC_RUN_FREE_LIST_SIZE_OFFSET)]
Mathieu Chartier011dc2c2016-07-18 11:11:45 -07001198
Hiroshi Yamauchidc412b62015-10-15 12:26:57 -07001199 mov r0, r3 // Set the return value and return.
1200 bx lr
1201
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001202.Lart_quick_alloc_object_resolved_rosalloc_slow_path:
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001203 SETUP_SAVE_REFS_ONLY_FRAME r2 @ save callee saves in case of GC
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001204 mov r1, r9 @ pass Thread::Current
1205 bl artAllocObjectFromCodeResolvedRosAlloc @ (mirror::Class* cls, Thread*)
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001206 RESTORE_SAVE_REFS_ONLY_FRAME
Hiroshi Yamauchidc412b62015-10-15 12:26:57 -07001207 RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001208END art_quick_alloc_object_resolved_rosalloc
Hiroshi Yamauchi3b4c1892013-09-12 21:33:12 -07001209
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001210// The common fast path code for art_quick_alloc_object_resolved_tlab
1211// and art_quick_alloc_object_resolved_region_tlab.
Hiroshi Yamauchi10d4c082016-02-24 12:51:18 -08001212//
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001213// r0: type r9: Thread::Current, r1, r2, r3, r12: free.
1214// Need to preserve r0 to the slow path.
1215.macro ALLOC_OBJECT_RESOLVED_TLAB_FAST_PATH slowPathLabel
Hiroshi Yamauchi10d4c082016-02-24 12:51:18 -08001216 // Load thread_local_pos (r12) and
1217 // thread_local_end (r3) with ldrd.
1218 // Check constraints for ldrd.
1219#if !((THREAD_LOCAL_POS_OFFSET + 4 == THREAD_LOCAL_END_OFFSET) && (THREAD_LOCAL_POS_OFFSET % 8 == 0))
1220#error "Thread::thread_local_pos/end must be consecutive and are 8 byte aligned for performance"
1221#endif
1222 ldrd r12, r3, [r9, #THREAD_LOCAL_POS_OFFSET]
1223 sub r12, r3, r12 // Compute the remaining buf size.
Mathieu Chartier93bbee02016-08-31 09:38:40 -07001224 ldr r3, [r2, #MIRROR_CLASS_OBJECT_SIZE_ALLOC_FAST_PATH_OFFSET] // Load the object size (r3).
Mathieu Chartier161db1d2016-09-01 14:06:54 -07001225 cmp r3, r12 // Check if it fits.
Hiroshi Yamauchi10d4c082016-02-24 12:51:18 -08001226 bhi \slowPathLabel
1227 // "Point of no slow path". Won't go to the slow path from here on. OK to clobber r0 and r1.
Hiroshi Yamauchi10d4c082016-02-24 12:51:18 -08001228 // Reload old thread_local_pos (r0)
1229 // for the return value.
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001230 ldr r2, [r9, #THREAD_LOCAL_POS_OFFSET]
1231 add r1, r2, r3
Hiroshi Yamauchi10d4c082016-02-24 12:51:18 -08001232 str r1, [r9, #THREAD_LOCAL_POS_OFFSET] // Store new thread_local_pos.
1233 ldr r1, [r9, #THREAD_LOCAL_OBJECTS_OFFSET] // Increment thread_local_objects.
1234 add r1, r1, #1
1235 str r1, [r9, #THREAD_LOCAL_OBJECTS_OFFSET]
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001236 POISON_HEAP_REF r0
1237 str r0, [r2, #MIRROR_OBJECT_CLASS_OFFSET] // Store the class pointer.
Hiroshi Yamauchi10d4c082016-02-24 12:51:18 -08001238 // Fence. This is "ish" not "ishst" so
1239 // that the code after this allocation
1240 // site will see the right values in
1241 // the fields of the class.
1242 // Alternatively we could use "ishst"
1243 // if we use load-acquire for the
Mathieu Chartier93bbee02016-08-31 09:38:40 -07001244 // object size load.)
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001245 mov r0, r2
Hiroshi Yamauchi10d4c082016-02-24 12:51:18 -08001246 dmb ish
1247 bx lr
1248.endm
1249
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001250// A hand-written override for GENERATE_ALLOC_ENTRYPOINTS_ALLOC_RESOLVED_OBJECT(_tlab, TLAB).
1251ENTRY art_quick_alloc_object_resolved_tlab
Hiroshi Yamauchi10d4c082016-02-24 12:51:18 -08001252 // Fast path tlab allocation.
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001253 // r0: type, r9: Thread::Current
1254 // r1, r2, r3, r12: free.
Hiroshi Yamauchi10d4c082016-02-24 12:51:18 -08001255#if defined(USE_READ_BARRIER)
Hiroshi Yamauchid72945c2016-03-16 11:23:10 -07001256 mvn r0, #0 // Read barrier not supported here.
1257 bx lr // Return -1.
Hiroshi Yamauchi10d4c082016-02-24 12:51:18 -08001258#endif
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001259 ALLOC_OBJECT_RESOLVED_TLAB_FAST_PATH .Lart_quick_alloc_object_resolved_tlab_slow_path
1260.Lart_quick_alloc_object_resolved_tlab_slow_path:
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001261 SETUP_SAVE_REFS_ONLY_FRAME r2 // Save callee saves in case of GC.
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001262 mov r1, r9 // Pass Thread::Current.
1263 bl artAllocObjectFromCodeResolvedTLAB // (mirror::Class* klass, Thread*)
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001264 RESTORE_SAVE_REFS_ONLY_FRAME
Hiroshi Yamauchi10d4c082016-02-24 12:51:18 -08001265 RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001266END art_quick_alloc_object_resolved_tlab
Hiroshi Yamauchi10d4c082016-02-24 12:51:18 -08001267
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001268// A hand-written override for GENERATE_ALLOC_ENTRYPOINTS_ALLOC_OBJECT_RESOLVED(_region_tlab, RegionTLAB)
1269ENTRY art_quick_alloc_object_resolved_region_tlab
Hiroshi Yamauchi10d4c082016-02-24 12:51:18 -08001270 // Fast path tlab allocation.
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001271 // r0: type, r9: Thread::Current, r1, r2, r3, r12: free.
Hiroshi Yamauchi10d4c082016-02-24 12:51:18 -08001272#if !defined(USE_READ_BARRIER)
1273 eor r0, r0, r0 // Read barrier must be enabled here.
1274 sub r0, r0, #1 // Return -1.
1275 bx lr
1276#endif
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001277 ALLOC_OBJECT_RESOLVED_TLAB_FAST_PATH .Lart_quick_alloc_object_resolved_region_tlab_slow_path
1278.Lart_quick_alloc_object_resolved_region_tlab_slow_path:
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001279 SETUP_SAVE_REFS_ONLY_FRAME r2 // Save callee saves in case of GC.
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001280 mov r1, r9 // Pass Thread::Current.
1281 bl artAllocObjectFromCodeResolvedRegionTLAB // (mirror::Class* klass, Thread*)
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001282 RESTORE_SAVE_REFS_ONLY_FRAME
Hiroshi Yamauchi10d4c082016-02-24 12:51:18 -08001283 RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER
Nicolas Geoffray2b615ba2017-01-06 14:40:07 +00001284END art_quick_alloc_object_resolved_region_tlab
Hiroshi Yamauchi10d4c082016-02-24 12:51:18 -08001285
Ian Rogersdfcdf1a2011-10-10 17:50:35 -07001286 /*
Ian Rogers57b86d42012-03-27 16:05:41 -07001287 * Called by managed code when the value in rSUSPEND has been decremented to 0.
Ian Rogersdfcdf1a2011-10-10 17:50:35 -07001288 */
Ian Rogers9329bbb2013-02-08 19:56:30 -08001289 .extern artTestSuspendFromCode
1290ENTRY art_quick_test_suspend
Wei Jin04f4d8a2014-05-29 18:04:29 -07001291#ifdef ARM_R4_SUSPEND_FLAG
Vladimir Marko952dbb12016-07-28 12:01:51 +01001292 ldrh rSUSPEND, [rSELF, #THREAD_FLAGS_OFFSET]
1293 cbnz rSUSPEND, 1f @ check Thread::Current()->suspend_count_ == 0
1294 mov rSUSPEND, #SUSPEND_CHECK_INTERVAL @ reset rSUSPEND to SUSPEND_CHECK_INTERVAL
1295 bx lr @ return if suspend_count_ == 0
Ian Rogers637859c2013-08-27 14:35:54 -070012961:
Vladimir Marko952dbb12016-07-28 12:01:51 +01001297 mov rSUSPEND, #SUSPEND_CHECK_INTERVAL @ reset rSUSPEND to SUSPEND_CHECK_INTERVAL
Wei Jin04f4d8a2014-05-29 18:04:29 -07001298#endif
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001299 SETUP_SAVE_EVERYTHING_FRAME r0 @ save everything for GC stack crawl
Ian Rogers4f0d07c2011-10-06 23:38:47 -07001300 mov r0, rSELF
Vladimir Marko952dbb12016-07-28 12:01:51 +01001301 bl artTestSuspendFromCode @ (Thread*)
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001302 RESTORE_SAVE_EVERYTHING_FRAME
Vladimir Marko952dbb12016-07-28 12:01:51 +01001303 bx lr
Ian Rogers9329bbb2013-02-08 19:56:30 -08001304END art_quick_test_suspend
Ian Rogers4f0d07c2011-10-06 23:38:47 -07001305
Dave Allison83252962014-04-03 16:33:48 -07001306ENTRY art_quick_implicit_suspend
1307 mov r0, rSELF
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001308 SETUP_SAVE_REFS_ONLY_FRAME r1 @ save callee saves for stack crawl
Ian Rogers1d8cdbc2014-09-22 22:51:09 -07001309 bl artTestSuspendFromCode @ (Thread*)
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001310 RESTORE_SAVE_REFS_ONLY_FRAME_AND_RETURN
Dave Allison83252962014-04-03 16:33:48 -07001311END art_quick_implicit_suspend
1312
Ian Rogersdfcdf1a2011-10-10 17:50:35 -07001313 /*
1314 * Called by managed code that is attempting to call a method on a proxy class. On entry
Ian Rogersaf6e67a2013-01-16 08:38:37 -08001315 * r0 holds the proxy method and r1 holds the receiver; r2 and r3 may contain arguments. The
1316 * frame size of the invoked proxy method agrees with a ref and args callee save frame.
Ian Rogersdfcdf1a2011-10-10 17:50:35 -07001317 */
Jeff Hao5fa60c32013-04-04 17:57:01 -07001318 .extern artQuickProxyInvokeHandler
Ian Rogers9329bbb2013-02-08 19:56:30 -08001319ENTRY art_quick_proxy_invoke_handler
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001320 SETUP_SAVE_REFS_AND_ARGS_FRAME_WITH_METHOD_IN_R0
Ian Rogersdfcdf1a2011-10-10 17:50:35 -07001321 mov r2, r9 @ pass Thread::Current
Ian Rogersaf6e67a2013-01-16 08:38:37 -08001322 mov r3, sp @ pass SP
Jeff Hao5fa60c32013-04-04 17:57:01 -07001323 blx artQuickProxyInvokeHandler @ (Method* proxy method, receiver, Thread*, SP)
Ian Rogers637859c2013-08-27 14:35:54 -07001324 ldr r2, [r9, #THREAD_EXCEPTION_OFFSET] @ load Thread::Current()->exception_
Zheng Xu5667fdb2014-10-23 18:29:55 +08001325 // Tear down the callee-save frame. Skip arg registers.
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001326 add sp, #(FRAME_SIZE_SAVE_REFS_AND_ARGS - FRAME_SIZE_SAVE_REFS_ONLY)
1327 .cfi_adjust_cfa_offset -(FRAME_SIZE_SAVE_REFS_AND_ARGS - FRAME_SIZE_SAVE_REFS_ONLY)
1328 RESTORE_SAVE_REFS_ONLY_FRAME
Zheng Xu5667fdb2014-10-23 18:29:55 +08001329 cbnz r2, 1f @ success if no exception is pending
1330 vmov d0, r0, r1 @ store into fpr, for when it's a fpr return...
Ian Rogers637859c2013-08-27 14:35:54 -07001331 bx lr @ return on success
13321:
Ian Rogersdfcdf1a2011-10-10 17:50:35 -07001333 DELIVER_PENDING_EXCEPTION
Ian Rogers9329bbb2013-02-08 19:56:30 -08001334END art_quick_proxy_invoke_handler
Ian Rogersdfcdf1a2011-10-10 17:50:35 -07001335
Jeff Hao88474b42013-10-23 16:24:40 -07001336 /*
Nicolas Geoffray796d6302016-03-13 22:22:31 +00001337 * Called to resolve an imt conflict.
1338 * r0 is the conflict ArtMethod.
1339 * r12 is a hidden argument that holds the target interface method's dex method index.
1340 *
1341 * Note that this stub writes to r0, r4, and r12.
Jeff Hao88474b42013-10-23 16:24:40 -07001342 */
1343ENTRY art_quick_imt_conflict_trampoline
Nicolas Geoffray796d6302016-03-13 22:22:31 +00001344 ldr r4, [sp, #0] // Load referrer
1345 ldr r4, [r4, #ART_METHOD_DEX_CACHE_METHODS_OFFSET_32] // Load dex cache methods array
1346 ldr r12, [r4, r12, lsl #POINTER_SIZE_SHIFT] // Load interface method
1347 ldr r0, [r0, #ART_METHOD_JNI_OFFSET_32] // Load ImtConflictTable
1348 ldr r4, [r0] // Load first entry in ImtConflictTable.
1349.Limt_table_iterate:
1350 cmp r4, r12
1351 // Branch if found. Benchmarks have shown doing a branch here is better.
1352 beq .Limt_table_found
1353 // If the entry is null, the interface method is not in the ImtConflictTable.
1354 cbz r4, .Lconflict_trampoline
1355 // Iterate over the entries of the ImtConflictTable.
1356 ldr r4, [r0, #(2 * __SIZEOF_POINTER__)]!
1357 b .Limt_table_iterate
1358.Limt_table_found:
Goran Jakovljevic59028d92016-03-29 18:05:03 +02001359 // We successfully hit an entry in the table. Load the target method
Nicolas Geoffray796d6302016-03-13 22:22:31 +00001360 // and jump to it.
1361 ldr r0, [r0, #__SIZEOF_POINTER__]
1362 ldr pc, [r0, #ART_METHOD_QUICK_CODE_OFFSET_32]
1363.Lconflict_trampoline:
1364 // Call the runtime stub to populate the ImtConflictTable and jump to the
1365 // resolved method.
Andreas Gampe3031c8d2015-07-13 20:11:06 -07001366 INVOKE_TRAMPOLINE_BODY artInvokeInterfaceTrampoline
Jeff Hao88474b42013-10-23 16:24:40 -07001367END art_quick_imt_conflict_trampoline
1368
Ian Rogers468532e2013-08-05 10:56:33 -07001369 .extern artQuickResolutionTrampoline
1370ENTRY art_quick_resolution_trampoline
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001371 SETUP_SAVE_REFS_AND_ARGS_FRAME r2
Ian Rogers468532e2013-08-05 10:56:33 -07001372 mov r2, r9 @ pass Thread::Current
1373 mov r3, sp @ pass SP
1374 blx artQuickResolutionTrampoline @ (Method* called, receiver, Thread*, SP)
Ian Rogers637859c2013-08-27 14:35:54 -07001375 cbz r0, 1f @ is code pointer null? goto exception
Ian Rogers468532e2013-08-05 10:56:33 -07001376 mov r12, r0
1377 ldr r0, [sp, #0] @ load resolved method in r0
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001378 RESTORE_SAVE_REFS_AND_ARGS_FRAME
Ian Rogers468532e2013-08-05 10:56:33 -07001379 bx r12 @ tail-call into actual code
13801:
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001381 RESTORE_SAVE_REFS_AND_ARGS_FRAME
Ian Rogers468532e2013-08-05 10:56:33 -07001382 DELIVER_PENDING_EXCEPTION
1383END art_quick_resolution_trampoline
1384
Andreas Gampec200a4a2014-06-16 18:39:09 -07001385 /*
1386 * Called to do a generic JNI down-call
1387 */
Ian Rogers6f3dbba2014-10-14 17:41:57 -07001388ENTRY art_quick_generic_jni_trampoline
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001389 SETUP_SAVE_REFS_AND_ARGS_FRAME_WITH_METHOD_IN_R0
Andreas Gampec200a4a2014-06-16 18:39:09 -07001390
1391 // Save rSELF
1392 mov r11, rSELF
1393 // Save SP , so we can have static CFI info. r10 is saved in ref_and_args.
1394 mov r10, sp
1395 .cfi_def_cfa_register r10
1396
1397 sub sp, sp, #5120
1398
1399 // prepare for artQuickGenericJniTrampoline call
1400 // (Thread*, SP)
1401 // r0 r1 <= C calling convention
1402 // rSELF r10 <= where they are
1403
1404 mov r0, rSELF // Thread*
1405 mov r1, r10
1406 blx artQuickGenericJniTrampoline // (Thread*, sp)
1407
1408 // The C call will have registered the complete save-frame on success.
1409 // The result of the call is:
1410 // r0: pointer to native code, 0 on error.
1411 // r1: pointer to the bottom of the used area of the alloca, can restore stack till there.
1412
1413 // Check for error = 0.
Nicolas Geoffray126d6592015-03-03 14:28:35 +00001414 cbz r0, .Lexception_in_native
Andreas Gampec200a4a2014-06-16 18:39:09 -07001415
1416 // Release part of the alloca.
1417 mov sp, r1
1418
1419 // Save the code pointer
1420 mov r12, r0
1421
1422 // Load parameters from frame into registers.
1423 pop {r0-r3}
1424
1425 // Softfloat.
1426 // TODO: Change to hardfloat when supported.
1427
1428 blx r12 // native call.
1429
1430 // result sign extension is handled in C code
1431 // prepare for artQuickGenericJniEndTrampoline call
1432 // (Thread*, result, result_f)
Nicolas Geoffray54accbc2014-08-13 03:40:45 +01001433 // r0 r2,r3 stack <= C calling convention
Andreas Gampec200a4a2014-06-16 18:39:09 -07001434 // r11 r0,r1 r0,r1 <= where they are
Nicolas Geoffray54accbc2014-08-13 03:40:45 +01001435 sub sp, sp, #8 // Stack alignment.
Andreas Gampec200a4a2014-06-16 18:39:09 -07001436
Nicolas Geoffray54accbc2014-08-13 03:40:45 +01001437 push {r0-r1}
1438 mov r3, r1
1439 mov r2, r0
Andreas Gampec200a4a2014-06-16 18:39:09 -07001440 mov r0, r11
1441
1442 blx artQuickGenericJniEndTrampoline
1443
Andreas Gampec200a4a2014-06-16 18:39:09 -07001444 // Restore self pointer.
1445 mov r9, r11
1446
1447 // Pending exceptions possible.
1448 ldr r2, [r9, #THREAD_EXCEPTION_OFFSET] @ load Thread::Current()->exception_
1449 cbnz r2, .Lexception_in_native
1450
Nicolas Geoffray126d6592015-03-03 14:28:35 +00001451 // Tear down the alloca.
1452 mov sp, r10
1453 .cfi_def_cfa_register sp
1454
Zheng Xu5667fdb2014-10-23 18:29:55 +08001455 // Tear down the callee-save frame. Skip arg registers.
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001456 add sp, #FRAME_SIZE_SAVE_REFS_AND_ARGS-FRAME_SIZE_SAVE_REFS_ONLY
1457 .cfi_adjust_cfa_offset -(FRAME_SIZE_SAVE_REFS_AND_ARGS-FRAME_SIZE_SAVE_REFS_ONLY)
1458 RESTORE_SAVE_REFS_ONLY_FRAME
Andreas Gampec200a4a2014-06-16 18:39:09 -07001459
Zheng Xu5667fdb2014-10-23 18:29:55 +08001460 // store into fpr, for when it's a fpr return...
1461 vmov d0, r0, r1
Andreas Gampec200a4a2014-06-16 18:39:09 -07001462 bx lr // ret
Christopher Ferrisd0a0b3e2014-10-30 19:04:13 -07001463 // Undo the unwinding information from above since it doesn't apply below.
1464 .cfi_def_cfa_register r10
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001465 .cfi_adjust_cfa_offset FRAME_SIZE_SAVE_REFS_AND_ARGS-FRAME_SIZE_SAVE_REFS_ONLY
Andreas Gampec200a4a2014-06-16 18:39:09 -07001466
Andreas Gampec200a4a2014-06-16 18:39:09 -07001467.Lexception_in_native:
Nicolas Geoffray126d6592015-03-03 14:28:35 +00001468 ldr sp, [r9, #THREAD_TOP_QUICK_FRAME_OFFSET]
1469 .cfi_def_cfa_register sp
1470 # This will create a new save-all frame, required by the runtime.
Andreas Gampec200a4a2014-06-16 18:39:09 -07001471 DELIVER_PENDING_EXCEPTION
Andreas Gampec200a4a2014-06-16 18:39:09 -07001472END art_quick_generic_jni_trampoline
Andreas Gampe2da88232014-02-27 12:26:20 -08001473
Ian Rogers468532e2013-08-05 10:56:33 -07001474 .extern artQuickToInterpreterBridge
Ian Rogers6f3dbba2014-10-14 17:41:57 -07001475ENTRY art_quick_to_interpreter_bridge
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001476 SETUP_SAVE_REFS_AND_ARGS_FRAME r1
Ian Rogers7db619b2013-01-16 18:35:48 -08001477 mov r1, r9 @ pass Thread::Current
1478 mov r2, sp @ pass SP
Ian Rogers468532e2013-08-05 10:56:33 -07001479 blx artQuickToInterpreterBridge @ (Method* method, Thread*, SP)
Ian Rogers637859c2013-08-27 14:35:54 -07001480 ldr r2, [r9, #THREAD_EXCEPTION_OFFSET] @ load Thread::Current()->exception_
Zheng Xu5667fdb2014-10-23 18:29:55 +08001481 // Tear down the callee-save frame. Skip arg registers.
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001482 add sp, #(FRAME_SIZE_SAVE_REFS_AND_ARGS - FRAME_SIZE_SAVE_REFS_ONLY)
1483 .cfi_adjust_cfa_offset -(FRAME_SIZE_SAVE_REFS_AND_ARGS - FRAME_SIZE_SAVE_REFS_ONLY)
1484 RESTORE_SAVE_REFS_ONLY_FRAME
Mathieu Chartier590fee92013-09-13 13:46:47 -07001485 cbnz r2, 1f @ success if no exception is pending
Zheng Xu5667fdb2014-10-23 18:29:55 +08001486 vmov d0, r0, r1 @ store into fpr, for when it's a fpr return...
1487 bx lr @ return on success
Ian Rogers637859c2013-08-27 14:35:54 -070014881:
Ian Rogers7db619b2013-01-16 18:35:48 -08001489 DELIVER_PENDING_EXCEPTION
Ian Rogers468532e2013-08-05 10:56:33 -07001490END art_quick_to_interpreter_bridge
Ian Rogers7db619b2013-01-16 18:35:48 -08001491
jeffhaoe343b762011-12-05 16:36:44 -08001492 /*
jeffhao0791adc2012-04-04 11:14:32 -07001493 * Routine that intercepts method calls and returns.
jeffhaoe343b762011-12-05 16:36:44 -08001494 */
Ian Rogers9329bbb2013-02-08 19:56:30 -08001495 .extern artInstrumentationMethodEntryFromCode
1496 .extern artInstrumentationMethodExitFromCode
Ian Rogers468532e2013-08-05 10:56:33 -07001497ENTRY art_quick_instrumentation_entry
Ian Rogers1d8cdbc2014-09-22 22:51:09 -07001498 @ Make stack crawlable and clobber r2 and r3 (post saving)
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001499 SETUP_SAVE_REFS_AND_ARGS_FRAME r2
1500 @ preserve r0 (not normally an arg) knowing there is a spare slot in kSaveRefsAndArgs.
Ian Rogers1d8cdbc2014-09-22 22:51:09 -07001501 str r0, [sp, #4]
Ian Rogers62d6c772013-02-27 08:32:07 -08001502 mov r2, r9 @ pass Thread::Current
Ian Rogers1d8cdbc2014-09-22 22:51:09 -07001503 mov r3, lr @ pass LR
1504 blx artInstrumentationMethodEntryFromCode @ (Method*, Object*, Thread*, LR)
Ian Rogers62d6c772013-02-27 08:32:07 -08001505 mov r12, r0 @ r12 holds reference to code
1506 ldr r0, [sp, #4] @ restore r0
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001507 RESTORE_SAVE_REFS_AND_ARGS_FRAME
Ian Rogers468532e2013-08-05 10:56:33 -07001508 blx r12 @ call method with lr set to art_quick_instrumentation_exit
Ian Rogers1d8cdbc2014-09-22 22:51:09 -07001509@ Deliberate fall-through into art_quick_instrumentation_exit.
Ian Rogers468532e2013-08-05 10:56:33 -07001510 .type art_quick_instrumentation_exit, #function
1511 .global art_quick_instrumentation_exit
1512art_quick_instrumentation_exit:
Ian Rogers62d6c772013-02-27 08:32:07 -08001513 mov lr, #0 @ link register is to here, so clobber with 0 for later checks
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001514 SETUP_SAVE_REFS_ONLY_FRAME r2 @ set up frame knowing r2 and r3 must be dead on exit
Ian Rogers306057f2012-11-26 12:45:53 -08001515 mov r12, sp @ remember bottom of caller's frame
jeffhaoe343b762011-12-05 16:36:44 -08001516 push {r0-r1} @ save return value
Ian Rogers9329bbb2013-02-08 19:56:30 -08001517 .cfi_adjust_cfa_offset 8
1518 .cfi_rel_offset r0, 0
1519 .cfi_rel_offset r1, 4
Andreas Gampec89b0472015-06-23 23:28:59 -07001520 vpush {d0} @ save fp return value
Ian Rogers9329bbb2013-02-08 19:56:30 -08001521 .cfi_adjust_cfa_offset 8
Andreas Gampec89b0472015-06-23 23:28:59 -07001522 sub sp, #8 @ space for return value argument. Note: AAPCS stack alignment is 8B, no
1523 @ need to align by 16.
1524 .cfi_adjust_cfa_offset 8
1525 vstr d0, [sp] @ d0 -> [sp] for fpr_res
Ian Rogers62d6c772013-02-27 08:32:07 -08001526 mov r2, r0 @ pass return value as gpr_res
1527 mov r3, r1
Ian Rogers306057f2012-11-26 12:45:53 -08001528 mov r0, r9 @ pass Thread::Current
1529 mov r1, r12 @ pass SP
Ian Rogers62d6c772013-02-27 08:32:07 -08001530 blx artInstrumentationMethodExitFromCode @ (Thread*, SP, gpr_res, fpr_res)
Ian Rogers306057f2012-11-26 12:45:53 -08001531 add sp, #8
Ian Rogers9329bbb2013-02-08 19:56:30 -08001532 .cfi_adjust_cfa_offset -8
Ian Rogers62d6c772013-02-27 08:32:07 -08001533
Ian Rogers306057f2012-11-26 12:45:53 -08001534 mov r2, r0 @ link register saved by instrumentation
1535 mov lr, r1 @ r1 is holding link register if we're to bounce to deoptimize
Andreas Gampec89b0472015-06-23 23:28:59 -07001536 vpop {d0} @ restore fp return value
1537 .cfi_adjust_cfa_offset -8
jeffhaoe343b762011-12-05 16:36:44 -08001538 pop {r0, r1} @ restore return value
Christopher Ferrisd0a0b3e2014-10-30 19:04:13 -07001539 .cfi_adjust_cfa_offset -8
Dave Allisonbbb32c22013-11-05 18:25:18 -08001540 .cfi_restore r0
1541 .cfi_restore r1
Ian Rogers62d6c772013-02-27 08:32:07 -08001542 add sp, #32 @ remove callee save frame
1543 .cfi_adjust_cfa_offset -32
Ian Rogers306057f2012-11-26 12:45:53 -08001544 bx r2 @ return
Ian Rogers1d8cdbc2014-09-22 22:51:09 -07001545END art_quick_instrumentation_entry
Ian Rogers306057f2012-11-26 12:45:53 -08001546
Ian Rogers306057f2012-11-26 12:45:53 -08001547 /*
Ian Rogers62d6c772013-02-27 08:32:07 -08001548 * Instrumentation has requested that we deoptimize into the interpreter. The deoptimization
1549 * will long jump to the upcall with a special exception of -1.
Ian Rogers306057f2012-11-26 12:45:53 -08001550 */
Ian Rogers9329bbb2013-02-08 19:56:30 -08001551 .extern artDeoptimize
Ian Rogers9329bbb2013-02-08 19:56:30 -08001552ENTRY art_quick_deoptimize
Vladimir Markofd36f1f2016-08-03 18:49:58 +01001553 SETUP_SAVE_ALL_CALLEE_SAVES_FRAME r0
Ian Rogers62d6c772013-02-27 08:32:07 -08001554 mov r0, r9 @ Set up args.
Ian Rogers1d8cdbc2014-09-22 22:51:09 -07001555 blx artDeoptimize @ artDeoptimize(Thread*)
Ian Rogers9329bbb2013-02-08 19:56:30 -08001556END art_quick_deoptimize
jeffhaoe343b762011-12-05 16:36:44 -08001557
Ian Rogers324e1902012-09-09 12:17:52 -07001558 /*
Sebastien Hertz07474662015-08-25 15:12:33 +00001559 * Compiled code has requested that we deoptimize into the interpreter. The deoptimization
Andreas Gampe639bdd12015-06-03 11:22:45 -07001560 * will long jump to the interpreter bridge.
Sebastien Hertz07474662015-08-25 15:12:33 +00001561 */
1562 .extern artDeoptimizeFromCompiledCode
1563ENTRY art_quick_deoptimize_from_compiled_code
Vladimir Marko239d6ea2016-09-05 10:44:04 +01001564 SETUP_SAVE_EVERYTHING_FRAME r0
Sebastien Hertz07474662015-08-25 15:12:33 +00001565 mov r0, r9 @ Set up args.
1566 blx artDeoptimizeFromCompiledCode @ artDeoptimizeFromCompiledCode(Thread*)
1567END art_quick_deoptimize_from_compiled_code
1568
1569 /*
Ian Rogers324e1902012-09-09 12:17:52 -07001570 * Signed 64-bit integer multiply.
1571 *
1572 * Consider WXxYZ (r1r0 x r3r2) with a long multiply:
1573 * WX
1574 * x YZ
1575 * --------
1576 * ZW ZX
1577 * YW YX
1578 *
1579 * The low word of the result holds ZX, the high word holds
1580 * (ZW+YX) + (the high overflow from ZX). YW doesn't matter because
1581 * it doesn't fit in the low 64 bits.
1582 *
1583 * Unlike most ARM math operations, multiply instructions have
1584 * restrictions on using the same register more than once (Rd and Rm
1585 * cannot be the same).
1586 */
1587 /* mul-long vAA, vBB, vCC */
Ian Rogers9329bbb2013-02-08 19:56:30 -08001588ENTRY art_quick_mul_long
Ian Rogers324e1902012-09-09 12:17:52 -07001589 push {r9 - r10}
Ian Rogers9329bbb2013-02-08 19:56:30 -08001590 .cfi_adjust_cfa_offset 8
1591 .cfi_rel_offset r9, 0
1592 .cfi_rel_offset r10, 4
Ian Rogers324e1902012-09-09 12:17:52 -07001593 mul ip, r2, r1 @ ip<- ZxW
1594 umull r9, r10, r2, r0 @ r9/r10 <- ZxX
1595 mla r2, r0, r3, ip @ r2<- YxX + (ZxW)
1596 add r10, r2, r10 @ r10<- r10 + low(ZxW + (YxX))
1597 mov r0,r9
1598 mov r1,r10
1599 pop {r9 - r10}
Ian Rogers9329bbb2013-02-08 19:56:30 -08001600 .cfi_adjust_cfa_offset -8
Dave Allisonbbb32c22013-11-05 18:25:18 -08001601 .cfi_restore r9
1602 .cfi_restore r10
Ian Rogers324e1902012-09-09 12:17:52 -07001603 bx lr
Ian Rogers9329bbb2013-02-08 19:56:30 -08001604END art_quick_mul_long
Ian Rogers324e1902012-09-09 12:17:52 -07001605
buzbee54330722011-08-23 16:46:55 -07001606 /*
1607 * Long integer shift. This is different from the generic 32/64-bit
1608 * binary operations because vAA/vBB are 64-bit but vCC (the shift
1609 * distance) is 32-bit. Also, Dalvik requires us to ignore all but the low
1610 * 6 bits.
1611 * On entry:
1612 * r0: low word
1613 * r1: high word
1614 * r2: shift count
1615 */
1616 /* shl-long vAA, vBB, vCC */
Ian Rogers637859c2013-08-27 14:35:54 -07001617ARM_ENTRY art_quick_shl_long @ ARM code as thumb code requires spills
buzbee54330722011-08-23 16:46:55 -07001618 and r2, r2, #63 @ r2<- r2 & 0x3f
1619 mov r1, r1, asl r2 @ r1<- r1 << r2
1620 rsb r3, r2, #32 @ r3<- 32 - r2
1621 orr r1, r1, r0, lsr r3 @ r1<- r1 | (r0 << (32-r2))
1622 subs ip, r2, #32 @ ip<- r2 - 32
1623 movpl r1, r0, asl ip @ if r2 >= 32, r1<- r0 << (r2-32)
1624 mov r0, r0, asl r2 @ r0<- r0 << r2
1625 bx lr
Ian Rogers9329bbb2013-02-08 19:56:30 -08001626END art_quick_shl_long
buzbee54330722011-08-23 16:46:55 -07001627
buzbee54330722011-08-23 16:46:55 -07001628 /*
1629 * Long integer shift. This is different from the generic 32/64-bit
1630 * binary operations because vAA/vBB are 64-bit but vCC (the shift
1631 * distance) is 32-bit. Also, Dalvik requires us to ignore all but the low
1632 * 6 bits.
1633 * On entry:
1634 * r0: low word
1635 * r1: high word
1636 * r2: shift count
1637 */
1638 /* shr-long vAA, vBB, vCC */
Ian Rogers637859c2013-08-27 14:35:54 -07001639ARM_ENTRY art_quick_shr_long @ ARM code as thumb code requires spills
buzbee54330722011-08-23 16:46:55 -07001640 and r2, r2, #63 @ r0<- r0 & 0x3f
1641 mov r0, r0, lsr r2 @ r0<- r2 >> r2
1642 rsb r3, r2, #32 @ r3<- 32 - r2
1643 orr r0, r0, r1, asl r3 @ r0<- r0 | (r1 << (32-r2))
1644 subs ip, r2, #32 @ ip<- r2 - 32
1645 movpl r0, r1, asr ip @ if r2 >= 32, r0<-r1 >> (r2-32)
1646 mov r1, r1, asr r2 @ r1<- r1 >> r2
1647 bx lr
Ian Rogers9329bbb2013-02-08 19:56:30 -08001648END art_quick_shr_long
buzbee54330722011-08-23 16:46:55 -07001649
buzbee54330722011-08-23 16:46:55 -07001650 /*
1651 * Long integer shift. This is different from the generic 32/64-bit
1652 * binary operations because vAA/vBB are 64-bit but vCC (the shift
1653 * distance) is 32-bit. Also, Dalvik requires us to ignore all but the low
1654 * 6 bits.
1655 * On entry:
1656 * r0: low word
1657 * r1: high word
1658 * r2: shift count
1659 */
1660 /* ushr-long vAA, vBB, vCC */
Ian Rogers637859c2013-08-27 14:35:54 -07001661ARM_ENTRY art_quick_ushr_long @ ARM code as thumb code requires spills
buzbee54330722011-08-23 16:46:55 -07001662 and r2, r2, #63 @ r0<- r0 & 0x3f
1663 mov r0, r0, lsr r2 @ r0<- r2 >> r2
1664 rsb r3, r2, #32 @ r3<- 32 - r2
1665 orr r0, r0, r1, asl r3 @ r0<- r0 | (r1 << (32-r2))
1666 subs ip, r2, #32 @ ip<- r2 - 32
1667 movpl r0, r1, lsr ip @ if r2 >= 32, r0<-r1 >>> (r2-32)
1668 mov r1, r1, lsr r2 @ r1<- r1 >>> r2
1669 bx lr
Ian Rogers9329bbb2013-02-08 19:56:30 -08001670END art_quick_ushr_long
buzbeefc9e6fa2012-03-23 15:14:29 -07001671
buzbeefc9e6fa2012-03-23 15:14:29 -07001672 /*
1673 * String's indexOf.
1674 *
1675 * On entry:
1676 * r0: string object (known non-null)
jeffhao86e46712012-08-08 17:30:59 -07001677 * r1: char to match (known <= 0xFFFF)
buzbeefc9e6fa2012-03-23 15:14:29 -07001678 * r2: Starting offset in string data
1679 */
Ian Rogers9329bbb2013-02-08 19:56:30 -08001680ENTRY art_quick_indexof
buzbeefc9e6fa2012-03-23 15:14:29 -07001681 push {r4, r10-r11, lr} @ 4 words of callee saves
Ian Rogers9329bbb2013-02-08 19:56:30 -08001682 .cfi_adjust_cfa_offset 16
1683 .cfi_rel_offset r4, 0
1684 .cfi_rel_offset r10, 4
1685 .cfi_rel_offset r11, 8
1686 .cfi_rel_offset lr, 12
Vladimir Markofdaf0f42016-10-13 19:29:53 +01001687#if (STRING_COMPRESSION_FEATURE)
1688 ldr r4, [r0, #MIRROR_STRING_COUNT_OFFSET]
1689#else
Ian Rogers1d8cdbc2014-09-22 22:51:09 -07001690 ldr r3, [r0, #MIRROR_STRING_COUNT_OFFSET]
Vladimir Markofdaf0f42016-10-13 19:29:53 +01001691#endif
Jeff Hao848f70a2014-01-15 13:49:50 -08001692 add r0, #MIRROR_STRING_VALUE_OFFSET
jessicahandojo05765752016-09-09 19:01:32 -07001693#if (STRING_COMPRESSION_FEATURE)
1694 /* r4 count (with flag) and r3 holds actual length */
Vladimir Markofdaf0f42016-10-13 19:29:53 +01001695 lsr r3, r4, #1
jessicahandojo05765752016-09-09 19:01:32 -07001696#endif
buzbeefc9e6fa2012-03-23 15:14:29 -07001697 /* Clamp start to [0..count] */
1698 cmp r2, #0
Ian Rogers637859c2013-08-27 14:35:54 -07001699 it lt
buzbeefc9e6fa2012-03-23 15:14:29 -07001700 movlt r2, #0
1701 cmp r2, r3
Ian Rogers637859c2013-08-27 14:35:54 -07001702 it gt
buzbeefc9e6fa2012-03-23 15:14:29 -07001703 movgt r2, r3
1704
buzbeefc9e6fa2012-03-23 15:14:29 -07001705 /* Save a copy in r12 to later compute result */
1706 mov r12, r0
1707
1708 /* Build pointer to start of data to compare and pre-bias */
jessicahandojo05765752016-09-09 19:01:32 -07001709#if (STRING_COMPRESSION_FEATURE)
Vladimir Markofdaf0f42016-10-13 19:29:53 +01001710 lsrs r4, r4, #1
1711 bcc .Lstring_indexof_compressed
jessicahandojo05765752016-09-09 19:01:32 -07001712#endif
buzbeefc9e6fa2012-03-23 15:14:29 -07001713 add r0, r0, r2, lsl #1
1714 sub r0, #2
1715
1716 /* Compute iteration count */
1717 sub r2, r3, r2
1718
1719 /*
1720 * At this point we have:
1721 * r0: start of data to test
1722 * r1: char to compare
1723 * r2: iteration count
jessicahandojo05765752016-09-09 19:01:32 -07001724 * r4: compression style (used temporarily)
buzbeefc9e6fa2012-03-23 15:14:29 -07001725 * r12: original start of string data
1726 * r3, r4, r10, r11 available for loading string data
1727 */
1728
1729 subs r2, #4
Ian Rogers5d885c82014-02-21 20:06:23 -08001730 blt .Lindexof_remainder
buzbeefc9e6fa2012-03-23 15:14:29 -07001731
Ian Rogers5d885c82014-02-21 20:06:23 -08001732.Lindexof_loop4:
buzbeefc9e6fa2012-03-23 15:14:29 -07001733 ldrh r3, [r0, #2]!
1734 ldrh r4, [r0, #2]!
1735 ldrh r10, [r0, #2]!
1736 ldrh r11, [r0, #2]!
1737 cmp r3, r1
Ian Rogers5d885c82014-02-21 20:06:23 -08001738 beq .Lmatch_0
buzbeefc9e6fa2012-03-23 15:14:29 -07001739 cmp r4, r1
Ian Rogers5d885c82014-02-21 20:06:23 -08001740 beq .Lmatch_1
buzbeefc9e6fa2012-03-23 15:14:29 -07001741 cmp r10, r1
Ian Rogers5d885c82014-02-21 20:06:23 -08001742 beq .Lmatch_2
buzbeefc9e6fa2012-03-23 15:14:29 -07001743 cmp r11, r1
Ian Rogers5d885c82014-02-21 20:06:23 -08001744 beq .Lmatch_3
buzbeefc9e6fa2012-03-23 15:14:29 -07001745 subs r2, #4
Ian Rogers5d885c82014-02-21 20:06:23 -08001746 bge .Lindexof_loop4
buzbeefc9e6fa2012-03-23 15:14:29 -07001747
Ian Rogers5d885c82014-02-21 20:06:23 -08001748.Lindexof_remainder:
1749 adds r2, #4
1750 beq .Lindexof_nomatch
buzbeefc9e6fa2012-03-23 15:14:29 -07001751
Ian Rogers5d885c82014-02-21 20:06:23 -08001752.Lindexof_loop1:
buzbeefc9e6fa2012-03-23 15:14:29 -07001753 ldrh r3, [r0, #2]!
1754 cmp r3, r1
Ian Rogers5d885c82014-02-21 20:06:23 -08001755 beq .Lmatch_3
buzbeefc9e6fa2012-03-23 15:14:29 -07001756 subs r2, #1
Ian Rogers5d885c82014-02-21 20:06:23 -08001757 bne .Lindexof_loop1
buzbeefc9e6fa2012-03-23 15:14:29 -07001758
Ian Rogers5d885c82014-02-21 20:06:23 -08001759.Lindexof_nomatch:
buzbeefc9e6fa2012-03-23 15:14:29 -07001760 mov r0, #-1
1761 pop {r4, r10-r11, pc}
1762
Ian Rogers5d885c82014-02-21 20:06:23 -08001763.Lmatch_0:
buzbeefc9e6fa2012-03-23 15:14:29 -07001764 sub r0, #6
1765 sub r0, r12
1766 asr r0, r0, #1
1767 pop {r4, r10-r11, pc}
Ian Rogers5d885c82014-02-21 20:06:23 -08001768.Lmatch_1:
buzbeefc9e6fa2012-03-23 15:14:29 -07001769 sub r0, #4
1770 sub r0, r12
1771 asr r0, r0, #1
1772 pop {r4, r10-r11, pc}
Ian Rogers5d885c82014-02-21 20:06:23 -08001773.Lmatch_2:
buzbeefc9e6fa2012-03-23 15:14:29 -07001774 sub r0, #2
1775 sub r0, r12
1776 asr r0, r0, #1
1777 pop {r4, r10-r11, pc}
Ian Rogers5d885c82014-02-21 20:06:23 -08001778.Lmatch_3:
buzbeefc9e6fa2012-03-23 15:14:29 -07001779 sub r0, r12
1780 asr r0, r0, #1
1781 pop {r4, r10-r11, pc}
jessicahandojo05765752016-09-09 19:01:32 -07001782#if (STRING_COMPRESSION_FEATURE)
1783.Lstring_indexof_compressed:
1784 add r0, r0, r2
1785 sub r0, #1
1786 sub r2, r3, r2
1787.Lstring_indexof_compressed_loop:
1788 subs r2, #1
1789 blt .Lindexof_nomatch
1790 ldrb r3, [r0, #1]!
1791 cmp r3, r1
1792 beq .Lstring_indexof_compressed_matched
1793 b .Lstring_indexof_compressed_loop
1794.Lstring_indexof_compressed_matched:
1795 sub r0, r12
1796 pop {r4, r10-r11, pc}
1797#endif
Ian Rogers9329bbb2013-02-08 19:56:30 -08001798END art_quick_indexof
buzbeefc9e6fa2012-03-23 15:14:29 -07001799
Zheng Xu5667fdb2014-10-23 18:29:55 +08001800 /* Assembly routines used to handle ABI differences. */
1801
1802 /* double fmod(double a, double b) */
1803 .extern fmod
1804ENTRY art_quick_fmod
1805 push {lr}
1806 .cfi_adjust_cfa_offset 4
1807 .cfi_rel_offset lr, 0
1808 sub sp, #4
1809 .cfi_adjust_cfa_offset 4
1810 vmov r0, r1, d0
1811 vmov r2, r3, d1
1812 bl fmod
1813 vmov d0, r0, r1
1814 add sp, #4
1815 .cfi_adjust_cfa_offset -4
1816 pop {pc}
Zheng Xu5667fdb2014-10-23 18:29:55 +08001817END art_quick_fmod
1818
1819 /* float fmodf(float a, float b) */
1820 .extern fmodf
1821ENTRY art_quick_fmodf
1822 push {lr}
1823 .cfi_adjust_cfa_offset 4
1824 .cfi_rel_offset lr, 0
1825 sub sp, #4
1826 .cfi_adjust_cfa_offset 4
1827 vmov r0, r1, d0
1828 bl fmodf
1829 vmov s0, r0
1830 add sp, #4
1831 .cfi_adjust_cfa_offset -4
1832 pop {pc}
Goran Jakovljevicab4c64b2016-04-14 11:46:58 +02001833END art_quick_fmodf
Zheng Xu5667fdb2014-10-23 18:29:55 +08001834
1835 /* int64_t art_d2l(double d) */
1836 .extern art_d2l
1837ENTRY art_quick_d2l
1838 vmov r0, r1, d0
1839 b art_d2l
1840END art_quick_d2l
1841
1842 /* int64_t art_f2l(float f) */
1843 .extern art_f2l
1844ENTRY art_quick_f2l
1845 vmov r0, s0
1846 b art_f2l
1847END art_quick_f2l
Roland Levillain5b3ee562015-04-14 16:02:41 +01001848
1849 /* float art_l2f(int64_t l) */
1850 .extern art_l2f
1851ENTRY art_quick_l2f
1852 push {lr}
1853 .cfi_adjust_cfa_offset 4
1854 .cfi_rel_offset lr, 0
1855 sub sp, #4
1856 .cfi_adjust_cfa_offset 4
1857 bl art_l2f
1858 vmov s0, r0
1859 add sp, #4
1860 .cfi_adjust_cfa_offset -4
1861 pop {pc}
1862END art_quick_l2f
Roland Levillain02b75802016-07-13 11:54:35 +01001863
Mathieu Chartier36c22712016-08-12 13:19:44 -07001864.macro CONDITIONAL_CBZ reg, reg_if, dest
1865.ifc \reg, \reg_if
1866 cbz \reg, \dest
1867.endif
1868.endm
1869
1870.macro CONDITIONAL_CMPBZ reg, reg_if, dest
1871.ifc \reg, \reg_if
1872 cmp \reg, #0
1873 beq \dest
1874.endif
1875.endm
1876
1877// Use CBZ if the register is in {r0, r7} otherwise compare and branch.
1878.macro SMART_CBZ reg, dest
1879 CONDITIONAL_CBZ \reg, r0, \dest
1880 CONDITIONAL_CBZ \reg, r1, \dest
1881 CONDITIONAL_CBZ \reg, r2, \dest
1882 CONDITIONAL_CBZ \reg, r3, \dest
1883 CONDITIONAL_CBZ \reg, r4, \dest
1884 CONDITIONAL_CBZ \reg, r5, \dest
1885 CONDITIONAL_CBZ \reg, r6, \dest
1886 CONDITIONAL_CBZ \reg, r7, \dest
1887 CONDITIONAL_CMPBZ \reg, r8, \dest
1888 CONDITIONAL_CMPBZ \reg, r9, \dest
1889 CONDITIONAL_CMPBZ \reg, r10, \dest
1890 CONDITIONAL_CMPBZ \reg, r11, \dest
1891 CONDITIONAL_CMPBZ \reg, r12, \dest
1892 CONDITIONAL_CMPBZ \reg, r13, \dest
1893 CONDITIONAL_CMPBZ \reg, r14, \dest
1894 CONDITIONAL_CMPBZ \reg, r15, \dest
1895.endm
1896
Roland Levillain02b75802016-07-13 11:54:35 +01001897 /*
1898 * Create a function `name` calling the ReadBarrier::Mark routine,
1899 * getting its argument and returning its result through register
Roland Levillain4359e612016-07-20 11:32:19 +01001900 * `reg`, saving and restoring all caller-save registers.
1901 *
Vladimir Marko94ce9c22016-09-30 14:50:51 +01001902 * IP is clobbered; `reg` must not be IP.
1903 *
Roland Levillain4359e612016-07-20 11:32:19 +01001904 * If `reg` is different from `r0`, the generated function follows a
1905 * non-standard runtime calling convention:
1906 * - register `reg` is used to pass the (sole) argument of this
1907 * function (instead of R0);
1908 * - register `reg` is used to return the result of this function
Roland Levillain02b75802016-07-13 11:54:35 +01001909 * (instead of R0);
Roland Levillain02b75802016-07-13 11:54:35 +01001910 * - R0 is treated like a normal (non-argument) caller-save register;
1911 * - everything else is the same as in the standard runtime calling
Roland Levillain4359e612016-07-20 11:32:19 +01001912 * convention (e.g. standard callee-save registers are preserved).
Roland Levillain02b75802016-07-13 11:54:35 +01001913 */
1914.macro READ_BARRIER_MARK_REG name, reg
1915ENTRY \name
Mathieu Chartier36a270a2016-07-28 18:08:51 -07001916 // Null check so that we can load the lock word.
Mathieu Chartier36c22712016-08-12 13:19:44 -07001917 SMART_CBZ \reg, .Lret_rb_\name
1918 // Check lock word for mark bit, if marked return. Use IP for scratch since it is blocked.
1919 ldr ip, [\reg, MIRROR_OBJECT_LOCK_WORD_OFFSET]
Vladimir Marko94ce9c22016-09-30 14:50:51 +01001920 tst ip, #LOCK_WORD_MARK_BIT_MASK_SHIFTED
Mathieu Chartier6f198e32016-11-03 11:15:04 -07001921 beq .Lnot_marked_rb_\name
Mathieu Chartier36c22712016-08-12 13:19:44 -07001922 // Already marked, return right away.
Vladimir Marko94ce9c22016-09-30 14:50:51 +01001923.Lret_rb_\name:
Mathieu Chartier36c22712016-08-12 13:19:44 -07001924 bx lr
Mathieu Chartier36a270a2016-07-28 18:08:51 -07001925
Mathieu Chartier6f198e32016-11-03 11:15:04 -07001926.Lnot_marked_rb_\name:
1927 // Test that both the forwarding state bits are 1.
1928 mvn ip, ip
1929 tst ip, #(LOCK_WORD_STATE_FORWARDING_ADDRESS << LOCK_WORD_STATE_SHIFT)
1930 beq .Lret_forwarding_address\name
1931
Mathieu Chartier36a270a2016-07-28 18:08:51 -07001932.Lslow_rb_\name:
Vladimir Marko94ce9c22016-09-30 14:50:51 +01001933 // Save IP: the kSaveEverything entrypoint art_quick_resolve_string makes a tail call here.
1934 push {r0-r4, r9, ip, lr} @ save return address, core caller-save registers and ip
Roland Levillain4359e612016-07-20 11:32:19 +01001935 .cfi_adjust_cfa_offset 32
1936 .cfi_rel_offset r0, 0
1937 .cfi_rel_offset r1, 4
1938 .cfi_rel_offset r2, 8
1939 .cfi_rel_offset r3, 12
1940 .cfi_rel_offset r4, 16
Vladimir Marko94ce9c22016-09-30 14:50:51 +01001941 .cfi_rel_offset r9, 20
1942 .cfi_rel_offset ip, 24
Roland Levillain4359e612016-07-20 11:32:19 +01001943 .cfi_rel_offset lr, 28
Roland Levillain4359e612016-07-20 11:32:19 +01001944
1945 .ifnc \reg, r0
1946 mov r0, \reg @ pass arg1 - obj from `reg`
1947 .endif
Vladimir Marko94ce9c22016-09-30 14:50:51 +01001948
1949 vpush {s0-s15} @ save floating-point caller-save registers
1950 .cfi_adjust_cfa_offset 64
Roland Levillain4359e612016-07-20 11:32:19 +01001951 bl artReadBarrierMark @ r0 <- artReadBarrierMark(obj)
Roland Levillain4359e612016-07-20 11:32:19 +01001952 vpop {s0-s15} @ restore floating-point registers
1953 .cfi_adjust_cfa_offset -64
Vladimir Marko94ce9c22016-09-30 14:50:51 +01001954
1955 .ifc \reg, r0 @ Save result to the stack slot or destination register.
1956 str r0, [sp, #0]
1957 .else
1958 .ifc \reg, r1
1959 str r0, [sp, #4]
1960 .else
1961 .ifc \reg, r2
1962 str r0, [sp, #8]
1963 .else
1964 .ifc \reg, r3
1965 str r0, [sp, #12]
1966 .else
1967 .ifc \reg, r4
1968 str r0, [sp, #16]
1969 .else
1970 .ifc \reg, r9
1971 str r0, [sp, #20]
1972 .else
1973 mov \reg, r0
1974 .endif
1975 .endif
1976 .endif
1977 .endif
1978 .endif
1979 .endif
1980
1981 pop {r0-r4, r9, ip, lr} @ restore caller-save registers
1982 .cfi_adjust_cfa_offset -32
1983 .cfi_restore r0
1984 .cfi_restore r1
1985 .cfi_restore r2
1986 .cfi_restore r3
1987 .cfi_restore r4
1988 .cfi_restore r9
1989 .cfi_restore ip
1990 .cfi_restore lr
Mathieu Chartier36a270a2016-07-28 18:08:51 -07001991 bx lr
Mathieu Chartier6f198e32016-11-03 11:15:04 -07001992.Lret_forwarding_address\name:
1993 // Shift left by the forwarding address shift. This clears out the state bits since they are
1994 // in the top 2 bits of the lock word.
1995 mvn ip, ip
1996 lsl \reg, ip, #LOCK_WORD_STATE_FORWARDING_ADDRESS_SHIFT
1997 bx lr
Roland Levillain02b75802016-07-13 11:54:35 +01001998END \name
1999.endm
2000
Roland Levillain4359e612016-07-20 11:32:19 +01002001READ_BARRIER_MARK_REG art_quick_read_barrier_mark_reg00, r0
Roland Levillain02b75802016-07-13 11:54:35 +01002002READ_BARRIER_MARK_REG art_quick_read_barrier_mark_reg01, r1
2003READ_BARRIER_MARK_REG art_quick_read_barrier_mark_reg02, r2
2004READ_BARRIER_MARK_REG art_quick_read_barrier_mark_reg03, r3
2005READ_BARRIER_MARK_REG art_quick_read_barrier_mark_reg04, r4
2006READ_BARRIER_MARK_REG art_quick_read_barrier_mark_reg05, r5
2007READ_BARRIER_MARK_REG art_quick_read_barrier_mark_reg06, r6
2008READ_BARRIER_MARK_REG art_quick_read_barrier_mark_reg07, r7
2009READ_BARRIER_MARK_REG art_quick_read_barrier_mark_reg08, r8
2010READ_BARRIER_MARK_REG art_quick_read_barrier_mark_reg09, r9
2011READ_BARRIER_MARK_REG art_quick_read_barrier_mark_reg10, r10
2012READ_BARRIER_MARK_REG art_quick_read_barrier_mark_reg11, r11
Orion Hodson02e30922016-12-01 10:33:51 +00002013
2014.extern artInvokePolymorphic
2015ENTRY art_quick_invoke_polymorphic
2016 SETUP_SAVE_REFS_AND_ARGS_FRAME r2
2017 mov r2, r9 @ pass Thread::Current
2018 mov r3, sp @ pass SP
2019 mov r0, #0 @ initialize 64-bit JValue as zero.
2020 str r0, [sp, #-4]!
2021 .cfi_adjust_cfa_offset 4
2022 str r0, [sp, #-4]!
2023 .cfi_adjust_cfa_offset 4
2024 mov r0, sp @ pass JValue for return result as first argument.
2025 bl artInvokePolymorphic @ artInvokePolymorphic(JValue, receiver, Thread*, SP)
2026 sub r0, 'A' @ return value is descriptor of handle's return type.
2027 cmp r0, 'Z' - 'A' @ check if value is in bounds of handler table
2028 bgt .Lcleanup_and_return @ and clean-up if not.
2029 adr r1, .Lhandler_table
2030 tbb [r0, r1] @ branch to handler for return value based on return type.
2031
2032.Lstart_of_handlers:
2033.Lstore_boolean_result:
2034 ldrb r0, [sp] @ Copy boolean value to return value of this function.
2035 b .Lcleanup_and_return
2036.Lstore_char_result:
2037 ldrh r0, [sp] @ Copy char value to return value of this function.
2038 b .Lcleanup_and_return
2039.Lstore_float_result:
2040 vldr s0, [sp] @ Copy float value from JValue result to the context restored by
2041 vstr s0, [sp, #16] @ RESTORE_SAVE_REFS_AND_ARGS_FRAME.
2042 b .Lcleanup_and_return
2043.Lstore_double_result:
2044 vldr d0, [sp] @ Copy double value from JValue result to the context restored by
2045 vstr d0, [sp, #16] @ RESTORE_SAVE_REFS_AND_ARGS_FRAME.
2046 b .Lcleanup_and_return
2047.Lstore_long_result:
2048 ldr r1, [sp, #4] @ Copy the upper bits from JValue result to the context restored by
2049 str r1, [sp, #80] @ RESTORE_SAVE_REFS_AND_ARGS_FRAME.
2050 // Fall-through for lower bits.
2051.Lstore_int_result:
2052 ldr r0, [sp] @ Copy int value to return value of this function.
2053 // Fall-through to clean up and return.
2054.Lcleanup_and_return:
2055 add sp, #8
2056 .cfi_adjust_cfa_offset -8
2057 RESTORE_SAVE_REFS_AND_ARGS_FRAME
2058 RETURN_OR_DELIVER_PENDING_EXCEPTION_REG r2
2059
2060.macro HANDLER_TABLE_OFFSET handler_label
2061 .byte (\handler_label - .Lstart_of_handlers) / 2
2062.endm
2063
2064.Lhandler_table:
2065 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // A
2066 HANDLER_TABLE_OFFSET(.Lstore_int_result) // B (byte)
2067 HANDLER_TABLE_OFFSET(.Lstore_char_result) // C (char)
2068 HANDLER_TABLE_OFFSET(.Lstore_double_result) // D (double)
2069 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // E
2070 HANDLER_TABLE_OFFSET(.Lstore_float_result) // F (float)
2071 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // G
2072 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // H
2073 HANDLER_TABLE_OFFSET(.Lstore_int_result) // I (int)
2074 HANDLER_TABLE_OFFSET(.Lstore_long_result) // J (long)
2075 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // K
2076 HANDLER_TABLE_OFFSET(.Lstore_long_result) // L (object)
2077 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // M
2078 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // N
2079 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // O
2080 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // P
2081 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // Q
2082 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // R
2083 HANDLER_TABLE_OFFSET(.Lstore_int_result) // S (short)
2084 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // T
2085 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // U
2086 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // V (void)
2087 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // W
2088 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // X
2089 HANDLER_TABLE_OFFSET(.Lcleanup_and_return) // Y
2090 HANDLER_TABLE_OFFSET(.Lstore_boolean_result) // Z (boolean)
2091.purgem HANDLER_TABLE_OFFSET
2092END art_quick_invoke_polymorphic