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157 lines
3.0 KiB
ArmAsm
157 lines
3.0 KiB
ArmAsm
/*
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* a1a2-selectortramps-arm64.s
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* OCMethodTrace
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*
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* https://github.com/omxcodec/OCMethodTrace.git
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*
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* Copyright (C) 2018 Michael Chen <omxcodec@gmail.com>
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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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#if __arm64__
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#include <mach/vm_param.h>
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.text
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.private_extern __a1a2_selectorTrampHead
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.private_extern __a1a2_firstSelectorTramp
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.private_extern __a1a2_selectorTrampEnd
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msgSend:
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.quad 0
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.align PAGE_MAX_SHIFT
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__a1a2_selectorTrampHead:
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L_a1a2_selectorTrampHead:
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// 1. selector
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ldr x1, [x17] // selector -> _cmd
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// 2. msgSend
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adr x17, L_a1a2_selectorTrampHead
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sub x17, x17, #PAGE_MAX_SIZE
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ldr x16, [x17]
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br x16 // tail call msgSend
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// pad up to TrampolineSelectorPagePair header size
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nop
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nop
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nop
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.macro TrampolineEntry
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// load address of trampoline data (one page before this instruction)
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adr x17, -PAGE_MAX_SIZE
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b L_a1a2_selectorTrampHead
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.endmacro
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.macro TrampolineEntryX16
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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.endmacro
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.macro TrampolineEntryX256
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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.endmacro
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.align 3
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.private_extern __a1a2_firstSelectorTramp
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__a1a2_firstSelectorTramp:
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// 2048-4 trampolines to fill 16K page
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TrampolineEntryX256
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TrampolineEntryX256
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TrampolineEntryX256
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TrampolineEntryX256
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TrampolineEntryX256
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TrampolineEntryX256
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TrampolineEntryX256
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntryX16
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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TrampolineEntry
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// TrampolineEntry
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// TrampolineEntry
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// TrampolineEntry
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// TrampolineEntry
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.private_extern __a1a2_selectorTrampEnd
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__a1a2_selectorTrampEnd:
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#endif
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