Differences From Artifact [2f9e1b8cac]:
- File src/runtime/lookup-asm/lookup-asm-amd64-elf.S — part of check-in [da242983b2] at 2023-08-29 22:48:02 on branch trunk — Add .note.GNU-stack on Haiku (user: js, size: 2065) [annotate] [blame] [check-ins using] [more...]
To Artifact [dba62cdfa5]:
- File
src/runtime/lookup-asm/lookup-asm-amd64-elf.S
— part of check-in
[de552578e7]
at
2024-02-26 20:32:55
on branch 1.0
— Use <cet.h> and _CET_ENDBR macro
This only uses endbr32/endbr64 when actually needed and emits the
necessary .note.gnu.property. (user: js, size: 2161) [annotate] [blame] [check-ins using] [more...]
1 | /* | | > > > > > > > > | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 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 | /* * Copyright (c) 2008-2024 Jonathan Schleifer <js@nil.im> * * All rights reserved. * * This file is part of ObjFW. It may be distributed under the terms of the * Q Public License 1.0, which can be found in the file LICENSE.QPL included in * the packaging of this file. * * Alternatively, it may be distributed under the terms of the GNU General * Public License, either version 2 or 3, which can be found in the file * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this * file. */ #include "config.h" #include "platform.h" #ifdef HAVE_CET_H # include <cet.h> #else # define _CET_ENDBR #endif .globl objc_msg_lookup .globl objc_msg_lookup_stret .globl objc_msg_lookup_super .globl objc_msg_lookup_super_stret .section .text .macro GENERATE_LOOKUP name notFound \name: _CET_ENDBR testq %rdi, %rdi jz returnNilMethod testb $1, %dil jnz .LtaggedPointer_\name movq (%rdi), %r8 |
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64 65 66 67 68 69 70 71 72 73 74 75 76 77 | jmp .Lmain_\name .type \name, %function .size \name, .-\name .endm .macro GENERATE_LOOKUP_SUPER name lookup \name: movq %rdi, %r8 movq (%rdi), %rdi testq %rdi, %rdi jz returnNilMethod movq 8(%r8), %r8 movq 64(%r8), %r8 | > > | 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | jmp .Lmain_\name .type \name, %function .size \name, .-\name .endm .macro GENERATE_LOOKUP_SUPER name lookup \name: _CET_ENDBR movq %rdi, %r8 movq (%rdi), %rdi testq %rdi, %rdi jz returnNilMethod movq 8(%r8), %r8 movq 64(%r8), %r8 |
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