| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "asm_support.h" |
| |
| /* Deliver the given exception */ |
| .extern artDeliverExceptionFromCode |
| /* Deliver an exception pending on a thread */ |
| .extern artDeliverPendingException |
| |
| /* Cache alignment for function entry */ |
| .macro ALIGN_FUNCTION_ENTRY |
| .balign 16 |
| .endm |
| |
| /* |
| * Macro that sets up the callee save frame to conform with |
| * Runtime::CreateCalleeSaveMethod(kSaveAll) |
| */ |
| .macro SETUP_SAVE_ALL_CALLEE_SAVE_FRAME |
| push {r4-r11, lr} @ 9 words of callee saves |
| vpush {s0-s31} |
| sub sp, #12 @ 3 words of space, bottom word will hold Method* |
| .endm |
| |
| /* |
| * Macro that sets up the callee save frame to conform with |
| * Runtime::CreateCalleeSaveMethod(kRefsOnly). Restoration assumes non-moving GC. |
| */ |
| .macro SETUP_REF_ONLY_CALLEE_SAVE_FRAME |
| push {r5-r8, r10-r11, lr} @ 7 words of callee saves |
| sub sp, #4 @ bottom word will hold Method* |
| .endm |
| |
| .macro RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| ldr lr, [sp, #28] @ restore lr for return |
| add sp, #32 @ unwind stack |
| .endm |
| |
| .macro RESTORE_REF_ONLY_CALLEE_SAVE_FRAME_AND_RETURN |
| ldr lr, [sp, #28] @ restore lr for return |
| add sp, #32 @ unwind stack |
| bx lr @ return |
| .endm |
| |
| /* |
| * Macro that sets up the callee save frame to conform with |
| * Runtime::CreateCalleeSaveMethod(kRefsAndArgs). Restoration assumes non-moving GC. |
| */ |
| .macro SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME |
| push {r1-r3, r5-r8, r10-r11, lr} @ 10 words of callee saves |
| sub sp, #8 @ 2 words of space, bottom word will hold Method* |
| .endm |
| |
| .macro RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME |
| ldr r1, [sp, #8] @ restore non-callee save r1 |
| ldrd r2, [sp, #12] @ restore non-callee saves r2-r3 |
| ldr lr, [sp, #44] @ restore lr |
| add sp, #48 @ rewind sp |
| .endm |
| |
| /* |
| * Macro that set calls through to artDeliverPendingExceptionFromCode, where the pending |
| * exception is Thread::Current()->exception_ |
| */ |
| .macro DELIVER_PENDING_EXCEPTION |
| SETUP_SAVE_ALL_CALLEE_SAVE_FRAME @ save callee saves for throw |
| mov r0, r9 @ pass Thread::Current |
| mov r1, sp @ pass SP |
| b artDeliverPendingExceptionFromCode @ artDeliverPendingExceptionFromCode(Thread*, SP) |
| .endm |
| |
| .macro NO_ARG_RUNTIME_EXCEPTION c_name, cxx_name |
| .global \c_name |
| .extern \cxx_name |
| ALIGN_FUNCTION_ENTRY |
| \c_name: |
| SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context |
| mov r0, r9 @ pass Thread::Current |
| mov r1, sp @ pass SP |
| b \cxx_name @ \cxx_name(Thread*, SP) |
| .endm |
| |
| .macro ONE_ARG_RUNTIME_EXCEPTION c_name, cxx_name |
| .global \c_name |
| .extern \cxx_name |
| ALIGN_FUNCTION_ENTRY |
| \c_name: |
| SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context |
| mov r1, r9 @ pass Thread::Current |
| mov r2, sp @ pass SP |
| b \cxx_name @ \cxx_name(Thread*, SP) |
| .endm |
| |
| .macro TWO_ARG_RUNTIME_EXCEPTION c_name, cxx_name |
| .global \c_name |
| .extern \cxx_name |
| ALIGN_FUNCTION_ENTRY |
| \c_name: |
| SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context |
| mov r2, r9 @ pass Thread::Current |
| mov r3, sp @ pass SP |
| b \cxx_name @ \cxx_name(Thread*, SP) |
| .endm |
| |
| /* |
| * Called by managed code, saves callee saves and then calls artThrowException |
| * that will place a mock Method* at the bottom of the stack. Arg1 holds the exception. |
| */ |
| ONE_ARG_RUNTIME_EXCEPTION art_deliver_exception_from_code, artDeliverExceptionFromCode |
| |
| /* |
| * Called by managed code to create and deliver a NullPointerException. |
| */ |
| NO_ARG_RUNTIME_EXCEPTION art_throw_null_pointer_exception_from_code, artThrowNullPointerExceptionFromCode |
| |
| /* |
| * Called by managed code to create and deliver an ArithmeticException. |
| */ |
| NO_ARG_RUNTIME_EXCEPTION art_throw_div_zero_from_code, artThrowDivZeroFromCode |
| |
| /* |
| * Called by managed code to create and deliver an ArrayIndexOutOfBoundsException. Arg1 holds |
| * index, arg2 holds limit. |
| */ |
| TWO_ARG_RUNTIME_EXCEPTION art_throw_array_bounds_from_code, artThrowArrayBoundsFromCode |
| |
| /* |
| * Called by managed code to create and deliver a StackOverflowError. |
| */ |
| NO_ARG_RUNTIME_EXCEPTION art_throw_stack_overflow_from_code, artThrowStackOverflowFromCode |
| |
| /* |
| * Called by managed code to create and deliver a NoSuchMethodError. |
| */ |
| ONE_ARG_RUNTIME_EXCEPTION art_throw_no_such_method_from_code, artThrowNoSuchMethodFromCode |
| |
| /* |
| * Called by managed code to create and deliver verification errors. Arg1 is kind, arg2 is ref. |
| */ |
| TWO_ARG_RUNTIME_EXCEPTION art_throw_verification_error_from_code, artThrowVerificationErrorFromCode |
| |
| /* |
| * All generated callsites for interface invokes and invocation slow paths will load arguments |
| * as usual - except instead of loading arg0/r0 with the target Method*, arg0/r0 will contain |
| * the method_idx. This wrapper will save arg1-arg3, load the caller's Method*, align the |
| * stack and call the appropriate C helper. |
| * NOTE: "this" is first visible argument of the target, and so can be found in arg1/r1. |
| * |
| * The helper will attempt to locate the target and return a 64-bit result in r0/r1 consisting |
| * of the target Method* in r0 and method->code_ in r1. |
| * |
| * If unsuccessful, the helper will return NULL/NULL. There will bea pending exception in the |
| * thread and we branch to another stub to deliver it. |
| * |
| * On success this wrapper will restore arguments and *jump* to the target, leaving the lr |
| * pointing back to the original caller. |
| */ |
| .macro INVOKE_TRAMPOLINE c_name, cxx_name |
| .global \c_name |
| .extern \cxx_name |
| ALIGN_FUNCTION_ENTRY |
| \c_name: |
| SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME @ save callee saves in case allocation triggers GC |
| ldr r2, [sp, #48] @ pass caller Method* |
| mov r3, r9 @ pass Thread::Current |
| str sp, [sp, #0] @ pass SP |
| bl \cxx_name @ (method_idx, this, caller, Thread*, SP) |
| mov r12, r1 @ save Method*->code_ |
| RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ did we find the target? |
| bxne r12 @ tail call to target if so |
| DELIVER_PENDING_EXCEPTION |
| .endm |
| |
| INVOKE_TRAMPOLINE art_invoke_interface_trampoline, artInvokeInterfaceTrampoline |
| INVOKE_TRAMPOLINE art_invoke_interface_trampoline_with_access_check, artInvokeInterfaceTrampolineWithAccessCheck |
| |
| INVOKE_TRAMPOLINE art_invoke_static_trampoline_with_access_check, artInvokeStaticTrampolineWithAccessCheck |
| INVOKE_TRAMPOLINE art_invoke_direct_trampoline_with_access_check, artInvokeDirectTrampolineWithAccessCheck |
| INVOKE_TRAMPOLINE art_invoke_super_trampoline_with_access_check, artInvokeSuperTrampolineWithAccessCheck |
| INVOKE_TRAMPOLINE art_invoke_virtual_trampoline_with_access_check, artInvokeVirtualTrampolineWithAccessCheck |
| |
| .global art_update_debugger |
| .extern artUpdateDebuggerFromCode |
| /* |
| * On entry, r0 and r1 must be preserved, r2 is dex PC |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_update_debugger: |
| mov r3, r0 @ stash away r0 so that it's saved as if it were an argument |
| SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME |
| mov r0, r2 @ arg0 is dex PC |
| mov r1, rSELF @ arg1 is Thread* |
| mov r2, sp @ arg2 is sp |
| bl artUpdateDebuggerFromCode @ artUpdateDebuggerFromCode(int32_t, Thread*, Method**) |
| RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME |
| mov r0, r3 @ restore original r0 |
| bx lr |
| |
| .global art_do_long_jump |
| /* |
| * On entry r0 is uint32_t* gprs_ and r1 is uint32_t* fprs_ |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_do_long_jump: |
| vldm r1, {s0-s31} @ load all fprs from argument fprs_ |
| ldr r2, [r0, #60] @ r2 = r15 (PC from gprs_ 60=4*15) |
| add r0, r0, #12 @ increment r0 to skip gprs_[0..2] 12=4*3 |
| ldm r0, {r3-r14} @ load remaining gprs from argument gprs_ |
| mov r0, #0 @ clear result registers r0 and r1 |
| mov r1, #0 |
| bx r2 @ do long jump |
| |
| .global art_work_around_app_jni_bugs |
| .extern artWorkAroundAppJniBugs |
| /* |
| * Entry point of native methods when JNI bug compatibility is enabled. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_work_around_app_jni_bugs: |
| @ save registers that may contain arguments and LR that will be crushed by a call |
| push {r0-r3, lr} |
| sub sp, #12 @ 3 words of space for alignment |
| mov r0, r9 @ pass Thread::Current |
| mov r1, sp @ pass SP |
| bl artWorkAroundAppJniBugs @ (Thread*, SP) |
| add sp, #12 @ rewind stack |
| mov r12, r0 @ save target address |
| pop {r0-r3, lr} @ restore possibly modified argument registers |
| bx r12 @ tail call into JNI routine |
| |
| .global art_handle_fill_data_from_code |
| .extern artHandleFillArrayDataFromCode |
| /* |
| * Entry from managed code that calls artHandleFillArrayDataFromCode and delivers exception on |
| * failure. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_handle_fill_data_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case exception allocation triggers GC |
| mov r2, r9 @ pass Thread::Current |
| mov r3, sp @ pass SP |
| bl artHandleFillArrayDataFromCode @ (Array*, const DexFile::Payload*, Thread*, SP) |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ success? |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_lock_object_from_code |
| .extern artLockObjectFromCode |
| /* |
| * Entry from managed code that calls artLockObjectFromCode, may block for GC. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_lock_object_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case we block |
| mov r1, r9 @ pass Thread::Current |
| mov r2, sp @ pass SP |
| bl artLockObjectFromCode @ (Object* obj, Thread*, SP) |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME_AND_RETURN |
| |
| .global art_unlock_object_from_code |
| .extern artUnlockObjectFromCode |
| /* |
| * Entry from managed code that calls artUnlockObjectFromCode and delivers exception on failure. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_unlock_object_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case exception allocation triggers GC |
| mov r1, r9 @ pass Thread::Current |
| mov r2, sp @ pass SP |
| bl artUnlockObjectFromCode @ (Object* obj, Thread*, SP) |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ success? |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_check_cast_from_code |
| .extern artCheckCastFromCode |
| /* |
| * Entry from managed code that calls artCheckCastFromCode and delivers exception on failure. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_check_cast_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case exception allocation triggers GC |
| mov r2, r9 @ pass Thread::Current |
| mov r3, sp @ pass SP |
| bl artCheckCastFromCode @ (Class* a, Class* b, Thread*, SP) |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ success? |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_can_put_array_element_from_code |
| .extern artCanPutArrayElementFromCode |
| /* |
| * Entry from managed code that calls artCanPutArrayElementFromCode and delivers exception on |
| * failure. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_can_put_array_element_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case exception allocation triggers GC |
| mov r2, r9 @ pass Thread::Current |
| mov r3, sp @ pass SP |
| bl artCanPutArrayElementFromCode @ (Object* element, Class* array_class, Thread*, SP) |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ success? |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_initialize_static_storage_from_code |
| .extern artInitializeStaticStorageFromCode |
| /* |
| * Entry from managed code when uninitialized static storage, this stub will run the class |
| * initializer and deliver the exception on error. On success the static storage base is |
| * returned. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_initialize_static_storage_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| mov r2, r9 @ pass Thread::Current |
| mov r3, sp @ pass SP |
| @ artInitializeStaticStorageFromCode(uint32_t type_idx, Method* referrer, Thread*, SP) |
| bl artInitializeStaticStorageFromCode |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ success if result is non-null |
| bxne lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_initialize_type_from_code |
| .extern artInitializeTypeFromCode |
| /* |
| * Entry from managed code when dex cache misses for a type_idx |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_initialize_type_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| mov r2, r9 @ pass Thread::Current |
| mov r3, sp @ pass SP |
| @ artInitializeTypeFromCode(uint32_t type_idx, Method* referrer, Thread*, SP) |
| bl artInitializeTypeFromCode |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ success if result is non-null |
| bxne lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_initialize_type_and_verify_access_from_code |
| .extern artInitializeTypeAndVerifyAccessFromCode |
| /* |
| * Entry from managed code when type_idx needs to be checked for access and dex cache may also |
| * miss. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_initialize_type_and_verify_access_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| mov r2, r9 @ pass Thread::Current |
| mov r3, sp @ pass SP |
| @ artInitializeTypeAndVerifyAccessFromCode(uint32_t type_idx, Method* referrer, Thread*, SP) |
| bl artInitializeTypeAndVerifyAccessFromCode |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ success if result is non-null |
| bxne lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_get32_static_from_code |
| .extern artGet32StaticFromCode |
| /* |
| * Called by managed code to resolve a static field and load a 32-bit primitive value. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_get32_static_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| ldr r1, [sp, #32] @ pass referrer |
| mov r2, r9 @ pass Thread::Current |
| mov r3, sp @ pass SP |
| bl artGet32StaticFromCode @ (uint32_t field_idx, const Method* referrer, Thread*, SP) |
| ldr r12, [r9, #THREAD_EXCEPTION_OFFSET] @ load Thread::Current()->exception_ |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r12, #0 @ success if no exception is pending |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_get64_static_from_code |
| .extern artGet64StaticFromCode |
| /* |
| * Called by managed code to resolve a static field and load a 64-bit primitive value. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_get64_static_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| ldr r1, [sp, #32] @ pass referrer |
| mov r2, r9 @ pass Thread::Current |
| mov r3, sp @ pass SP |
| bl artGet64StaticFromCode @ (uint32_t field_idx, const Method* referrer, Thread*, SP) |
| ldr r12, [r9, #THREAD_EXCEPTION_OFFSET] @ load Thread::Current()->exception_ |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r12, #0 @ success if no exception is pending |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_get_obj_static_from_code |
| .extern artGetObjStaticFromCode |
| /* |
| * Called by managed code to resolve a static field and load an object reference. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_get_obj_static_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| ldr r1, [sp, #32] @ pass referrer |
| mov r2, r9 @ pass Thread::Current |
| mov r3, sp @ pass SP |
| bl artGetObjStaticFromCode @ (uint32_t field_idx, const Method* referrer, Thread*, SP) |
| ldr r12, [r9, #THREAD_EXCEPTION_OFFSET] @ load Thread::Current()->exception_ |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r12, #0 @ success if no exception is pending |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_get32_instance_from_code |
| .extern artGet32InstanceFromCode |
| /* |
| * Called by managed code to resolve an instance field and load a 32-bit primitive value. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_get32_instance_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| ldr r2, [sp, #32] @ pass referrer |
| mov r3, r9 @ pass Thread::Current |
| str sp, [sp, #0] @ pass SP |
| bl artGet32InstanceFromCode @ (field_idx, Object*, referrer, Thread*, SP) |
| ldr r12, [r9, #THREAD_EXCEPTION_OFFSET] @ load Thread::Current()->exception_ |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r12, #0 @ success if no exception is pending |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_get64_instance_from_code |
| .extern artGet64InstanceFromCode |
| /* |
| * Called by managed code to resolve an instance field and load a 64-bit primitive value. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_get64_instance_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| ldr r2, [sp, #32] @ pass referrer |
| mov r3, r9 @ pass Thread::Current |
| str sp, [sp, #0] @ pass SP |
| bl artGet64InstanceFromCode @ (field_idx, Object*, referrer, Thread*, SP) |
| ldr r12, [r9, #THREAD_EXCEPTION_OFFSET] @ load Thread::Current()->exception_ |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r12, #0 @ success if no exception is pending |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_get_obj_instance_from_code |
| .extern artGetObjInstanceFromCode |
| /* |
| * Called by managed code to resolve an instance field and load an object reference. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_get_obj_instance_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| ldr r2, [sp, #32] @ pass referrer |
| mov r3, r9 @ pass Thread::Current |
| str sp, [sp, #0] @ pass SP |
| bl artGetObjInstanceFromCode @ (field_idx, Object*, referrer, Thread*, SP) |
| ldr r12, [r9, #THREAD_EXCEPTION_OFFSET] @ load Thread::Current()->exception_ |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r12, #0 @ success if no exception is pending |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_set32_static_from_code |
| .extern artSet32StaticFromCode |
| /* |
| * Called by managed code to resolve a static field and store a 32-bit primitive value. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_set32_static_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| ldr r2, [sp, #32] @ pass referrer |
| mov r3, r9 @ pass Thread::Current |
| str sp, [sp, #0] @ pass SP |
| bl artSet32StaticFromCode @ (field_idx, new_val, referrer, Thread*, SP) |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ success if result is 0 |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_set64_static_from_code |
| .extern artSet64StaticFromCode |
| /* |
| * Called by managed code to resolve a static field and store a 64-bit primitive value. |
| * On entry r0 holds field index, r1:r2 hold new_val |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_set64_static_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| mov r3, r2 @ pass one half of wide argument |
| mov r2, r1 @ pass other half of wide argument |
| ldr r1, [sp, #32] @ pass referrer |
| mov r12, sp @ save SP |
| sub sp, #8 @ grow frame for alignment with stack args |
| push {r9, r12} @ pass Thread::Current and SP |
| bl artSet64StaticFromCode @ (field_idx, referrer, new_val, Thread*, SP) |
| add sp, #16 @ release out args |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME @ TODO: we can clearly save an add here |
| cmp r0, #0 @ success if result is 0 |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_set_obj_static_from_code |
| .extern artSetObjStaticFromCode |
| /* |
| * Called by managed code to resolve a static field and store an object reference. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_set_obj_static_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| ldr r2, [sp, #32] @ pass referrer |
| mov r3, r9 @ pass Thread::Current |
| str sp, [sp, #0] @ pass SP |
| bl artSetObjStaticFromCode @ (field_idx, new_val, referrer, Thread*, SP) |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ success if result is 0 |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_set32_instance_from_code |
| .extern artSet32InstanceFromCode |
| /* |
| * Called by managed code to resolve an instance field and store a 32-bit primitive value. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_set32_instance_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| ldr r3, [sp, #32] @ pass referrer |
| mov r12, sp @ save SP |
| sub sp, #8 @ grow frame for alignment with stack args |
| push {r9, r12} @ pass Thread::Current and SP |
| bl artSet32InstanceFromCode @ (field_idx, Object*, new_val, referrer, Thread*, SP) |
| add sp, #16 @ release out args |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME @ TODO: we can clearly save an add here |
| cmp r0, #0 @ success if result is 0 |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_set64_instance_from_code |
| .extern artSet32InstanceFromCode |
| /* |
| * Called by managed code to resolve an instance field and store a 64-bit primitive value. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_set64_instance_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| mov r12, sp @ save SP |
| sub sp, #8 @ grow frame for alignment with stack args |
| push {r9, r12} @ pass Thread::Current and SP |
| bl artSet64InstanceFromCode @ (field_idx, Object*, new_val, Thread*, SP) |
| add sp, #16 @ release out args |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME @ TODO: we can clearly save an add here |
| cmp r0, #0 @ success if result is 0 |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_set_obj_instance_from_code |
| .extern artSetObjInstanceFromCode |
| /* |
| * Called by managed code to resolve an instance field and store an object reference. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_set_obj_instance_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| ldr r3, [sp, #32] @ pass referrer |
| mov r12, sp @ save SP |
| sub sp, #8 @ grow frame for alignment with stack args |
| push {r9, r12} @ pass Thread::Current and SP |
| bl artSetObjInstanceFromCode @ (field_idx, Object*, new_val, referrer, Thread*, SP) |
| add sp, #16 @ release out args |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME @ TODO: we can clearly save an add here |
| cmp r0, #0 @ success if result is 0 |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_resolve_string_from_code |
| .extern artResolveStringFromCode |
| /* |
| * Entry from managed code to resolve a string, this stub will allocate a String and deliver an |
| * exception on error. On success the String is returned. R0 holds the referring method, |
| * R1 holds the string index. The fast path check for hit in strings cache has already been |
| * performed. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_resolve_string_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| mov r2, r9 @ pass Thread::Current |
| mov r3, sp @ pass SP |
| @ artResolveStringFromCode(Method* referrer, uint32_t string_idx, Thread*, SP) |
| bl artResolveStringFromCode |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ success if result is non-null |
| bxne lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_alloc_object_from_code |
| .extern artAllocObjectFromCode |
| /* |
| * Called by managed code to allocate an object |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_alloc_object_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| mov r2, r9 @ pass Thread::Current |
| mov r3, sp @ pass SP |
| bl artAllocObjectFromCode @ (uint32_t type_idx, Method* method, Thread*, SP) |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ success if result is non-null |
| bxne lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_alloc_object_from_code_with_access_check |
| .extern artAllocObjectFromCodeWithAccessCheck |
| /* |
| * Called by managed code to allocate an object when the caller doesn't know whether it has |
| * access to the created type. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_alloc_object_from_code_with_access_check: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| mov r2, r9 @ pass Thread::Current |
| mov r3, sp @ pass SP |
| bl artAllocObjectFromCodeWithAccessCheck @ (uint32_t type_idx, Method* method, Thread*, SP) |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ success if result is non-null |
| bxne lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_alloc_array_from_code |
| .extern artAllocArrayFromCode |
| /* |
| * Called by managed code to allocate an array. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_alloc_array_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| mov r3, r9 @ pass Thread::Current |
| str sp, [sp, #0] @ pass SP |
| @ artAllocArrayFromCode(uint32_t type_idx, Method* method, int32_t component_count, Thread*, SP) |
| bl artAllocArrayFromCode |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ success if result is non-null |
| bxne lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_alloc_array_from_code_with_access_check |
| .extern artAllocArrayFromCodeWithAccessCheck |
| /* |
| * Called by managed code to allocate an array when the caller doesn't know whether it has |
| * access to the created type. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_alloc_array_from_code_with_access_check: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| mov r3, r9 @ pass Thread::Current |
| str sp, [sp, #0] @ pass SP |
| @ artAllocArrayFromCodeWithAccessCheck(type_idx, method, component_count, Thread*, SP) |
| bl artAllocArrayFromCodeWithAccessCheck |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ success if result is non-null |
| bxne lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_check_and_alloc_array_from_code |
| .extern artCheckAndAllocArrayFromCode |
| /* |
| * Called by managed code to allocate an array in a special case for FILLED_NEW_ARRAY. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_check_and_alloc_array_from_code: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| mov r3, r9 @ pass Thread::Current |
| str sp, [sp, #0] @ pass SP |
| @ artCheckAndAllocArrayFromCode(uint32_t type_idx, Method* method, int32_t count, Thread* , SP) |
| bl artCheckAndAllocArrayFromCode |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ success if result is non-null |
| bxne lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_check_and_alloc_array_from_code_with_access_check |
| .extern artCheckAndAllocArrayFromCodeWithAccessCheck |
| /* |
| * Called by managed code to allocate an array in a special case for FILLED_NEW_ARRAY. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_check_and_alloc_array_from_code_with_access_check: |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves in case of GC |
| mov r3, r9 @ pass Thread::Current |
| str sp, [sp, #0] @ pass SP |
| @ artCheckAndAllocArrayFromCodeWithAccessCheck(type_idx, method, count, Thread* , SP) |
| bl artCheckAndAllocArrayFromCodeWithAccessCheck |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| cmp r0, #0 @ success if result is non-null |
| bxne lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_test_suspend |
| .extern artTestSuspendFromCode |
| /* |
| * Called by managed code when the value in rSUSPEND has been decremented to 0. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_test_suspend: |
| ldr r0, [rSELF, #THREAD_SUSPEND_COUNT_OFFSET] |
| mov rSUSPEND, #SUSPEND_CHECK_INTERVAL @ reset rSUSPEND to SUSPEND_CHECK_INTERVAL |
| cmp r0, #0 @ check Thread::Current()->suspend_count_ == 0 |
| bxeq rLR @ return if suspend_count_ == 0 |
| mov r0, rSELF |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME @ save callee saves for stack crawl |
| mov r1, sp |
| bl artTestSuspendFromCode @ (Thread*, SP) |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME_AND_RETURN |
| |
| .global art_proxy_invoke_handler |
| .extern artProxyInvokeHandler |
| /* |
| * Called by managed code that is attempting to call a method on a proxy class. On entry |
| * r0 holds the proxy method; r1, r2 and r3 may contain arguments. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_proxy_invoke_handler: |
| SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME |
| str r0, [sp, #0] @ place proxy method at bottom of frame |
| mov r2, r9 @ pass Thread::Current |
| add r3, sp, #12 @ pointer to r2/r3/LR/caller's Method**/out-args as second arg |
| blx artProxyInvokeHandler @ (Method* proxy method, receiver, Thread*, args...) |
| ldr r12, [r9, #THREAD_EXCEPTION_OFFSET] @ load Thread::Current()->exception_ |
| ldr lr, [sp, #44] @ restore lr |
| ldrd r0, [sp, #12] @ load r0/r1 from r2/r3 that were overwritten with the out args |
| add sp, #48 @ pop frame |
| cmp r12, #0 @ success if no exception is pending |
| bxeq lr @ return on success |
| DELIVER_PENDING_EXCEPTION |
| |
| .global art_trace_entry_from_code |
| .global art_trace_exit_from_code |
| .extern artTraceMethodEntryFromCode |
| .extern artTraceMethodExitFromCode |
| /* |
| * Routine that intercepts method calls and returns. |
| */ |
| ALIGN_FUNCTION_ENTRY |
| art_trace_entry_from_code: |
| push {r0-r3} @ save arguments (4 words) |
| mov r1, r9 @ pass Thread::Current |
| mov r2, lr @ pass LR |
| blx artTraceMethodEntryFromCode @ (Method*, Thread*, LR) |
| mov r12, r0 @ r12 holds reference to code |
| pop {r0-r3} @ restore arguments |
| blx r12 @ call method |
| art_trace_exit_from_code: |
| push {r0-r1} @ save return value |
| blx artTraceMethodExitFromCode @ () |
| mov lr, r0 @ restore link register |
| pop {r0, r1} @ restore return value |
| bx lr @ return |
| |
| .global art_shl_long |
| /* |
| * Long integer shift. This is different from the generic 32/64-bit |
| * binary operations because vAA/vBB are 64-bit but vCC (the shift |
| * distance) is 32-bit. Also, Dalvik requires us to ignore all but the low |
| * 6 bits. |
| * On entry: |
| * r0: low word |
| * r1: high word |
| * r2: shift count |
| */ |
| /* shl-long vAA, vBB, vCC */ |
| ALIGN_FUNCTION_ENTRY |
| art_shl_long: |
| and r2, r2, #63 @ r2<- r2 & 0x3f |
| mov r1, r1, asl r2 @ r1<- r1 << r2 |
| rsb r3, r2, #32 @ r3<- 32 - r2 |
| orr r1, r1, r0, lsr r3 @ r1<- r1 | (r0 << (32-r2)) |
| subs ip, r2, #32 @ ip<- r2 - 32 |
| movpl r1, r0, asl ip @ if r2 >= 32, r1<- r0 << (r2-32) |
| mov r0, r0, asl r2 @ r0<- r0 << r2 |
| bx lr |
| |
| .global art_shr_long |
| /* |
| * Long integer shift. This is different from the generic 32/64-bit |
| * binary operations because vAA/vBB are 64-bit but vCC (the shift |
| * distance) is 32-bit. Also, Dalvik requires us to ignore all but the low |
| * 6 bits. |
| * On entry: |
| * r0: low word |
| * r1: high word |
| * r2: shift count |
| */ |
| /* shr-long vAA, vBB, vCC */ |
| ALIGN_FUNCTION_ENTRY |
| art_shr_long: |
| and r2, r2, #63 @ r0<- r0 & 0x3f |
| mov r0, r0, lsr r2 @ r0<- r2 >> r2 |
| rsb r3, r2, #32 @ r3<- 32 - r2 |
| orr r0, r0, r1, asl r3 @ r0<- r0 | (r1 << (32-r2)) |
| subs ip, r2, #32 @ ip<- r2 - 32 |
| movpl r0, r1, asr ip @ if r2 >= 32, r0<-r1 >> (r2-32) |
| mov r1, r1, asr r2 @ r1<- r1 >> r2 |
| bx lr |
| |
| .global art_ushr_long |
| /* |
| * Long integer shift. This is different from the generic 32/64-bit |
| * binary operations because vAA/vBB are 64-bit but vCC (the shift |
| * distance) is 32-bit. Also, Dalvik requires us to ignore all but the low |
| * 6 bits. |
| * On entry: |
| * r0: low word |
| * r1: high word |
| * r2: shift count |
| */ |
| /* ushr-long vAA, vBB, vCC */ |
| ALIGN_FUNCTION_ENTRY |
| art_ushr_long: |
| and r2, r2, #63 @ r0<- r0 & 0x3f |
| mov r0, r0, lsr r2 @ r0<- r2 >> r2 |
| rsb r3, r2, #32 @ r3<- 32 - r2 |
| orr r0, r0, r1, asl r3 @ r0<- r0 | (r1 << (32-r2)) |
| subs ip, r2, #32 @ ip<- r2 - 32 |
| movpl r0, r1, lsr ip @ if r2 >= 32, r0<-r1 >>> (r2-32) |
| mov r1, r1, lsr r2 @ r1<- r1 >>> r2 |
| bx lr |
| |
| .balign 4 |
| .global art_indexof |
| art_indexof: |
| /* |
| * String's indexOf. |
| * |
| * On entry: |
| * r0: string object (known non-null) |
| * r1: char to match |
| * r2: Starting offset in string data |
| */ |
| |
| push {r4, r10-r11, lr} @ 4 words of callee saves |
| ldr r3, [r0, #STRING_COUNT_OFFSET] |
| ldr r12, [r0, #STRING_OFFSET_OFFSET] |
| ldr r0, [r0, #STRING_VALUE_OFFSET] |
| |
| /* Clamp start to [0..count] */ |
| cmp r2, #0 |
| movlt r2, #0 |
| cmp r2, r3 |
| movgt r2, r3 |
| |
| /* Build a pointer to the start of string data */ |
| add r0, #STRING_DATA_OFFSET |
| add r0, r0, r12, lsl #1 |
| |
| /* Save a copy in r12 to later compute result */ |
| mov r12, r0 |
| |
| /* Build pointer to start of data to compare and pre-bias */ |
| add r0, r0, r2, lsl #1 |
| sub r0, #2 |
| |
| /* Compute iteration count */ |
| sub r2, r3, r2 |
| |
| /* |
| * At this point we have: |
| * r0: start of data to test |
| * r1: char to compare |
| * r2: iteration count |
| * r12: original start of string data |
| * r3, r4, r10, r11 available for loading string data |
| */ |
| |
| subs r2, #4 |
| blt indexof_remainder |
| |
| indexof_loop4: |
| ldrh r3, [r0, #2]! |
| ldrh r4, [r0, #2]! |
| ldrh r10, [r0, #2]! |
| ldrh r11, [r0, #2]! |
| cmp r3, r1 |
| beq match_0 |
| cmp r4, r1 |
| beq match_1 |
| cmp r10, r1 |
| beq match_2 |
| cmp r11, r1 |
| beq match_3 |
| subs r2, #4 |
| bge indexof_loop4 |
| |
| indexof_remainder: |
| adds r2, #4 |
| beq indexof_nomatch |
| |
| indexof_loop1: |
| ldrh r3, [r0, #2]! |
| cmp r3, r1 |
| beq match_3 |
| subs r2, #1 |
| bne indexof_loop1 |
| |
| indexof_nomatch: |
| mov r0, #-1 |
| pop {r4, r10-r11, pc} |
| |
| match_0: |
| sub r0, #6 |
| sub r0, r12 |
| asr r0, r0, #1 |
| pop {r4, r10-r11, pc} |
| match_1: |
| sub r0, #4 |
| sub r0, r12 |
| asr r0, r0, #1 |
| pop {r4, r10-r11, pc} |
| match_2: |
| sub r0, #2 |
| sub r0, r12 |
| asr r0, r0, #1 |
| pop {r4, r10-r11, pc} |
| match_3: |
| sub r0, r12 |
| asr r0, r0, #1 |
| pop {r4, r10-r11, pc} |
| |
| |
| /* |
| * String's compareTo. |
| * |
| * Requires rARG0/rARG1 to have been previously checked for null. Will |
| * return negative if this's string is < comp, 0 if they are the |
| * same and positive if >. |
| * |
| * On entry: |
| * r0: this object pointer |
| * r1: comp object pointer |
| * |
| */ |
| |
| .balign 4 |
| .global art_string_compareto |
| .extern __memcmp16 |
| art_string_compareto: |
| mov r2, r0 @ this to r2, opening up r0 for return value |
| subs r0, r2, r1 @ Same? |
| bxeq lr |
| |
| push {r4, r7-r12, lr} @ 8 words - keep alignment |
| |
| ldr r4, [r2, #STRING_OFFSET_OFFSET] |
| ldr r9, [r1, #STRING_OFFSET_OFFSET] |
| ldr r7, [r2, #STRING_COUNT_OFFSET] |
| ldr r10, [r1, #STRING_COUNT_OFFSET] |
| ldr r2, [r2, #STRING_VALUE_OFFSET] |
| ldr r1, [r1, #STRING_VALUE_OFFSET] |
| |
| /* |
| * At this point, we have: |
| * value: r2/r1 |
| * offset: r4/r9 |
| * count: r7/r10 |
| * We're going to compute |
| * r11 <- countDiff |
| * r10 <- minCount |
| */ |
| subs r11, r7, r10 |
| movls r10, r7 |
| |
| /* Now, build pointers to the string data */ |
| add r2, r2, r4, lsl #1 |
| add r1, r1, r9, lsl #1 |
| /* |
| * Note: data pointers point to previous element so we can use pre-index |
| * mode with base writeback. |
| */ |
| add r2, #STRING_DATA_OFFSET-2 @ offset to contents[-1] |
| add r1, #STRING_DATA_OFFSET-2 @ offset to contents[-1] |
| |
| /* |
| * At this point we have: |
| * r2: *this string data |
| * r1: *comp string data |
| * r10: iteration count for comparison |
| * r11: value to return if the first part of the string is equal |
| * r0: reserved for result |
| * r3, r4, r7, r8, r9, r12 available for loading string data |
| */ |
| |
| subs r10, #2 |
| blt do_remainder2 |
| |
| /* |
| * Unroll the first two checks so we can quickly catch early mismatch |
| * on long strings (but preserve incoming alignment) |
| */ |
| |
| ldrh r3, [r2, #2]! |
| ldrh r4, [r1, #2]! |
| ldrh r7, [r2, #2]! |
| ldrh r8, [r1, #2]! |
| subs r0, r3, r4 |
| subeqs r0, r7, r8 |
| bne done |
| cmp r10, #28 |
| bgt do_memcmp16 |
| subs r10, #3 |
| blt do_remainder |
| |
| loopback_triple: |
| ldrh r3, [r2, #2]! |
| ldrh r4, [r1, #2]! |
| ldrh r7, [r2, #2]! |
| ldrh r8, [r1, #2]! |
| ldrh r9, [r2, #2]! |
| ldrh r12,[r1, #2]! |
| subs r0, r3, r4 |
| subeqs r0, r7, r8 |
| subeqs r0, r9, r12 |
| bne done |
| subs r10, #3 |
| bge loopback_triple |
| |
| do_remainder: |
| adds r10, #3 |
| beq returnDiff |
| |
| loopback_single: |
| ldrh r3, [r2, #2]! |
| ldrh r4, [r1, #2]! |
| subs r0, r3, r4 |
| bne done |
| subs r10, #1 |
| bne loopback_single |
| |
| returnDiff: |
| mov r0, r11 |
| pop {r4, r7-r12, pc} |
| |
| do_remainder2: |
| adds r10, #2 |
| bne loopback_single |
| mov r0, r11 |
| pop {r4, r7-r12, pc} |
| |
| /* Long string case */ |
| do_memcmp16: |
| mov r7, r11 |
| add r0, r2, #2 |
| add r1, r1, #2 |
| mov r2, r10 |
| bl __memcmp16 |
| cmp r0, #0 |
| moveq r0, r7 |
| done: |
| pop {r4, r7-r12, pc} |
