/*
* 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"
#include "platform.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:
cmp r0, #0
beq ret_nil
tst r0, #1
bne .Ltagged_pointer_\name
ldr r2, [r0, #0]
ldr r2, [r2, #32]
.Lmain_\name:
#ifndef OF_BIG_ENDIAN
# ifdef OF_SELUID24
ldrb r3, [r1, #2]
ldr r2, [r2, r3, lsl #2]
# endif
ldrb r3, [r1, #1]
ldr r2, [r2, r3, lsl #2]
ldrb r3, [r1, #0]
ldr r2, [r2, r3, lsl #2]
#else
# ifdef OF_SELUID24
ldrb r3, [r1, #1]
ldr r2, [r2, r3, lsl #2]
# endif
ldrb r3, [r1, #2]
ldr r2, [r2, r3, lsl #2]
ldrb r3, [r1, #3]
ldr r2, [r2, r3, lsl #2]
#endif
cmp r2, #0
beq \not_found(PLT)
mov r0, r2
bx lr
.Ltagged_pointer_\name:
ldr r2, .Lgot$indirect_.Ltagged_pointer_\name
add r2, pc, r2
ldr r3, .Lgot$indirect_.Ltagged_pointer_\name+4
ldr r3, [r2, r3]
ldr r3, [r3]
eor r0, r0, r3
and r0, r0, #0xE
lsl r0, r0, #1
ldr r3, .Lgot$indirect_.Ltagged_pointer_\name+8
ldr r3, [r2, r3]
ldr r2, [r3, r0]
ldr r2, [r2, #32]
b .Lmain_\name
.type \name, %function
.size \name, .-\name
.Lgot$indirect_.Ltagged_pointer_\name:
.long _GLOBAL_OFFSET_TABLE_-(.Ltagged_pointer_\name+12)
.long objc_tagged_pointer_secret(GOT)
.long objc_tagged_pointer_classes(GOT)
.endm
.macro generate_lookup_super name lookup
\name:
mov r2, r0
ldr r0, [r0, #0]
cmp r0, #0
beq ret_nil
ldr r2, [r2, #4]
ldr r2, [r2, #32]
b .Lmain_\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:
adr r0, nil_method
bx lr
nil_method:
mov r0, #0
bx lr
#ifdef OF_LINUX
.section .note.GNU-stack, "", %progbits
#endif