Artifact 447b9d83b029b84ec0301acb93d40a64c0d89c8fd8f75fe3ffac99ceb8e5bcf7:
- File
src/runtime/lookup-asm/lookup-asm-x86-win32.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: 2016) [annotate] [blame] [check-ins using] [more...]
/* * 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" #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 movl 4(%esp), %edx testl %edx, %edx jz returnNilMethod testb $1, %dl jnz .LtaggedPointer_\name movl (%edx), %edx movl 32(%edx), %edx .Lmain_\name: movl 8(%esp), %eax #ifdef OF_SELUID24 movzbl 2(%eax), %ecx movl (%edx,%ecx,4), %edx #endif movzbl 1(%eax), %ecx movl (%edx,%ecx,4), %edx movzbl (%eax), %ecx movl (%edx,%ecx,4), %eax testl %eax, %eax jz \notFound ret .LtaggedPointer_\name: xorl _objc_taggedPointerSecret, %edx andb $0xE, %dl movzbl %dl, %edx movl _objc_taggedPointerClasses(,%edx,2), %edx movl 32(%edx), %edx jmp .Lmain_\name .def \name .scl 2 .type 32 .endef .endm .macro GENERATE_LOOKUP_SUPER name lookup \name: _CET_ENDBR movl 4(%esp), %edx movl (%edx), %eax test %eax, %eax jz returnNilMethod movl %eax, 4(%esp) movl 4(%edx), %edx movl 32(%edx), %edx jmp .Lmain_\lookup .def \name .scl 2 .type 32 .endef .endm GENERATE_LOOKUP _objc_msg_lookup _objc_methodNotFound GENERATE_LOOKUP _objc_msg_lookup_stret _objc_methodNotFound_stret GENERATE_LOOKUP_SUPER _objc_msg_lookup_super _objc_msg_lookup GENERATE_LOOKUP_SUPER _objc_msg_lookup_super_stret _objc_msg_lookup_stret returnNilMethod: movl $nilMethod, %eax ret nilMethod: xorl %eax, %eax ret