Artifact 6bf3eb314e3ca3da46415696812da1df59e4abd84cf4c090b073393f09caad4c:
- File
src/runtime/lookup-asm/lookup-asm-x86-win32.S
— part of check-in
[943cf97843]
at
2020-07-04 00:24:54
on branch tagged-pointers
— Only use 4 bits to classify tagged pointers
This leaves 28/60 bits for the value. (user: js, size: 1942) [annotate] [blame] [check-ins using]
/* * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, * 2018, 2019, 2020 * 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" .intel_syntax noprefix .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 not_found \name: mov edx, [esp+4] test edx, edx jz short ret_nil bt edx, 0 jc short .Ltagged_pointer_\name mov edx, [edx] mov edx, [edx+32] .Lmain_\name: mov eax, [esp+8] #ifdef OF_SELUID24 movzx ecx, byte ptr [eax+2] mov edx, [edx+ecx*4] #endif movzx ecx, byte ptr [eax+1] mov edx, [edx+ecx*4] movzx ecx, byte ptr [eax] mov eax, [edx+ecx*4] test eax, eax jz \not_found ret .Ltagged_pointer_\name: and dl, 0xF shr dl, 1 movzx edx, dl mov eax, offset _objc_tagged_pointer_classes mov edx, [eax+edx*4] mov edx, [edx+32] jmp short .Lmain_\name .endm .macro generate_lookup_super name lookup \name: mov edx, [esp+4] mov eax, [edx] test eax, eax jz short ret_nil mov [esp+4], eax mov edx, [edx+4] mov edx, [edx+32] jmp short .Lmain_\lookup .endm generate_lookup _objc_msg_lookup _objc_method_not_found generate_lookup _objc_msg_lookup_stret _objc_method_not_found_stret generate_lookup_super _objc_msg_lookup_super _objc_msg_lookup generate_lookup_super _objc_msg_lookup_super_stret _objc_msg_lookup_stret ret_nil: mov eax, offset nil_method ret nil_method: xor eax, eax ret