77 lines
2 KiB
ArmAsm
77 lines
2 KiB
ArmAsm
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Interpreter entry point.
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*/
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.text
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.global SYMBOL(ExecuteMterpImpl)
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FUNCTION_TYPE(ExecuteMterpImpl)
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/*
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* On entry:
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* 0 Thread* self
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* 1 code_item
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* 2 ShadowFrame
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* 3 JValue* result_register
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*
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*/
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SYMBOL(ExecuteMterpImpl):
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.cfi_startproc
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.cfi_def_cfa rsp, 8
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/* Spill callee save regs */
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PUSH %rbx
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PUSH %rbp
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PUSH %r12
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PUSH %r13
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PUSH %r14
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PUSH %r15
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/* Allocate frame */
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subq $$FRAME_SIZE, %rsp
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.cfi_adjust_cfa_offset FRAME_SIZE
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/* Remember the return register */
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movq IN_ARG3, SHADOWFRAME_RESULT_REGISTER_OFFSET(IN_ARG2)
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/* Remember the code_item */
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movq IN_ARG1, SHADOWFRAME_CODE_ITEM_OFFSET(IN_ARG2)
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/* set up "named" registers */
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movl SHADOWFRAME_NUMBER_OF_VREGS_OFFSET(IN_ARG2), %eax
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leaq SHADOWFRAME_VREGS_OFFSET(IN_ARG2), rFP
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leaq (rFP, %rax, 4), rREFS
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movl SHADOWFRAME_DEX_PC_OFFSET(IN_ARG2), %eax
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leaq CODEITEM_INSNS_OFFSET(IN_ARG1), rPC
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leaq (rPC, %rax, 2), rPC
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EXPORT_PC
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/* Starting ibase */
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movq IN_ARG0, rSELF
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REFRESH_IBASE
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/* Set up for backwards branches & osr profiling */
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movq OFF_FP_METHOD(rFP), OUT_ARG0
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leaq OFF_FP_SHADOWFRAME(rFP), OUT_ARG1
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call SYMBOL(MterpSetUpHotnessCountdown)
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movswl %ax, rPROFILE
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/* start executing the instruction at rPC */
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FETCH_INST
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GOTO_NEXT
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/* NOTE: no fallthrough */
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