Artifact 45689ef5fd8e45ccd4e90cc28c15bcd35b52a79ab9c1b606fe49af85b6e7a40f:
- File
src/runtime/lookup-asm/lookup-asm-mips-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: 2421) [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: beqz $a0, .ret_nil_\name lw $t0, 0($a0) lw $t0, 32($t0) .main_\name: #if defined(__MIPSEL__) # ifdef OF_SELUID24 lbu $t1, 2($a1) # endif lbu $t2, 1($a1) lbu $t3, 0($a1) #elif defined(__MIPSEB__) # ifdef OF_SELUID24 lbu $t1, 1($a1) # endif lbu $t2, 2($a1) lbu $t3, 3($a1) #else # error Neither __MIPSEL__ nor __MIPSEB__ defined! #endif #ifdef OF_SELUID24 sll $t1, $t1, 2 #endif sll $t2, $t2, 2 sll $t3, $t3, 2 #ifdef OF_SELUID24 addu $t0, $t0, $t1 lw $t0, 0($t0) #endif addu $t0, $t0, $t2 lw $t0, 0($t0) addu $t0, $t0, $t3 lw $t0, 0($t0) #ifdef __PIC__ beqz $t0, .forward_\name #else beqz $t0, \not_found #endif move $v0, $t0 j $ra .ret_nil_\name: #ifdef __PIC__ addiu $v0, $t9, nil_method-\name #else la $v0, nil_method #endif j $ra #ifdef __PIC__ .forward_\name: lui $gp, %hi(_gp_disp) addiu $gp, $gp, %lo(_gp_disp) addu $gp, $gp, $t9 addiu $gp, $gp, .forward_\name-\name lw $t9, %call16(\not_found)($gp) jr $t9 #endif .type \name, %function .size \name, .-\name .endm .macro generate_lookup_super name lookup \name: lw $t0, 0($a0) beqz $t0, .ret_nil_\name lw $t0, 4($a0) lw $t0, 32($t0) b .main_\lookup .ret_nil_\name: #ifdef __PIC__ addiu $v0, $t9, nil_method-\name #else la $v0, nil_method #endif j $ra .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 nil_method: move $v0, $zero j $ra #ifdef __linux__ .section .note.GNU-stack, "", %progbits #endif