Artifact 69f3a9eceb206935acbb018e16ab331bdc1dba2a5b9c4dd31c4c6be0b5485485:
- File
src/runtime/lookup-asm/lookup-asm-ppc-elf.S
— part of check-in
[0c332aa2d2]
at
2013-12-27 02:07:14
on branch trunk
— Rework forwarding API and ABI.
It matches the Apple API and ABI now and the forwarding handler itself
determines whether it should forward or not.This moves handling of +[resolve{Class,Instance}Method:] to the runtime
and allows adding new kinds of forwarding without changing the runtime.Also fixes a potential stack problem in the forwarding for MIPS. (user: js, size: 1871) [annotate] [blame] [check-ins using]
/* * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 * Jonathan Schleifer <js@webkeks.org> * * 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" .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: cmpwi %r3, 0 beq- ret_nil lwz %r5, 0(%r3) lwz %r5, 32(%r5) .main_\name: #ifdef OF_SELUID24 lbz %r6, 1(%r4) #endif lbz %r7, 2(%r4) lbz %r8, 3(%r4) #ifdef OF_SELUID24 slwi %r6, %r6, 2 #endif slwi %r7, %r7, 2 slwi %r8, %r8, 2 #ifdef OF_SELUID24 lwzx %r5, %r5, %r6 #endif lwzx %r5, %r5, %r7 lwzx %r5, %r5, %r8 cmpwi %r5, 0 beq- .forward_\name mr %r3, %r5 blr .forward_\name: b \not_found@plt .type \name, %function .size \name, .-\name .endm .macro generate_lookup_super name lookup \name: lwz %r5, 0(%r3) cmpwi %r5, 0 beq- ret_nil lwz %r5, 4(%r3) lwz %r5, 32(%r5) b .main_\lookup .type \name, %function .size \name, .-\name .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: mflr %r0 bl get_pc mtlr %r0 .L0: addi %r3, %r3, nil_method-.L0 blr nil_method: li %r3, 0 blr get_pc: mflr %r3 blr #ifdef __linux__ .section .note.GNU-stack, "", %progbits #endif