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