Overview
Comment: | lookup-asm-x86_64-elf.S: Support tagged pointers |
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Timelines: | family | ancestors | descendants | both | tagged-pointers |
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SHA3-256: |
577564693c6b02bc81215ff6c229d027 |
User & Date: | js on 2020-06-29 23:24:20 |
Other Links: | branch diff | manifest | tags |
Context
2020-06-30
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00:29 | lookup-asm-x86-elf.S: Support tagged pointers check-in: 7f493d2446 user: js tags: tagged-pointers | |
2020-06-29
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23:24 | lookup-asm-x86_64-elf.S: Support tagged pointers check-in: 577564693c user: js tags: tagged-pointers | |
23:17 | Merge trunk into branch "tagged-pointers" check-in: f5be211a1b user: js tags: tagged-pointers | |
Changes
Modified src/runtime/lookup-asm/lookup-asm-x86_64-elf.S from [edf654aa73] to [37f4b60ca1].
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28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | .section .text .macro generate_lookup name not_found \name: test rdi, rdi jz short ret_nil mov r8, [rdi] mov r8, [r8+64] .Lmain_\name: mov rax, [rsi] movzx ecx, ah movzx edx, al #ifdef OF_SELUID24 shr eax, 16 mov r8, [r8+rax*8] #endif mov r8, [r8+rcx*8] mov rax, [r8+rdx*8] test rax, rax jz short \not_found@PLT ret .type \name, %function .size \name, .-\name .endm .macro generate_lookup_super name lookup \name: mov r8, rdi | > > > > > > > > > > > > > | 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | .section .text .macro generate_lookup name not_found \name: test rdi, rdi jz short ret_nil bt edi, 0 jc short .Ltagged_pointer_\name mov r8, [rdi] mov r8, [r8+64] .Lmain_\name: mov rax, [rsi] movzx ecx, ah movzx edx, al #ifdef OF_SELUID24 shr eax, 16 mov r8, [r8+rax*8] #endif mov r8, [r8+rcx*8] mov rax, [r8+rdx*8] test rax, rax jz short \not_found@PLT ret .Ltagged_pointer_\name: movzx r8, dil shr r8, 1 mov rax, [rip+objc_tagged_pointer_classes@GOTPCREL] mov r8, [rax+r8*8] mov r8, [r8+64] jmp short .Lmain_\name .type \name, %function .size \name, .-\name .endm .macro generate_lookup_super name lookup \name: mov r8, rdi |
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Modified src/runtime/tagged-pointer.m from [a10440bd9d] to [3ba8d16fba].
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17 18 19 20 21 22 23 | #import "ObjFWRT.h" #import "private.h" #define NUM_TAGGED_POINTER_CLASSES 0x7F | | | | | 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | #import "ObjFWRT.h" #import "private.h" #define NUM_TAGGED_POINTER_CLASSES 0x7F Class objc_tagged_pointer_classes[NUM_TAGGED_POINTER_CLASSES]; static uint_fast8_t taggedPointerClassesCount; int_fast8_t objc_registerTaggedPointerClass(Class class) { uint_fast8_t i; objc_global_mutex_lock(); if (taggedPointerClassesCount == NUM_TAGGED_POINTER_CLASSES) { objc_global_mutex_unlock(); return -1; } i = taggedPointerClassesCount++; objc_tagged_pointer_classes[i] = class; objc_global_mutex_unlock(); return i; } Class object_getTaggedPointerClass(id object) { uintptr_t pointer = (uintptr_t)object; pointer &= 0x7E; pointer >>= 1; if (pointer >= NUM_TAGGED_POINTER_CLASSES) return Nil; return objc_tagged_pointer_classes[pointer]; } uintptr_t object_getTaggedPointerValue(id object) { uintptr_t pointer = (uintptr_t)object; |
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