ObjFW  Check-in [714c6029ce]

Overview
Comment:Add ARM/ELF assembly lookup implementation.
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SHA3-256: 714c6029ceffd14d121322768f54bc06217b5de6c0f1f1eef1d48750c1d3dfc4
User & Date: js on 2012-07-20 18:43:35
Other Links: manifest | tags
Context
2012-07-20
23:46
Fix the ARM architecture detection mess. check-in: 7e7d14b815 user: js tags: trunk
18:43
Add ARM/ELF assembly lookup implementation. check-in: 714c6029ce user: js tags: trunk
17:17
Add iOS to PLATFORMS.md. check-in: ab92512d10 user: js tags: trunk
Changes
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Modified configure.ac from [f68f9de071] to [aa58ef1743].

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			#if defined(__ppc__) || defined(__PPC__)
			# ifdef __ELF__
			yes
			# endif
			#endif
		], [
			AC_SUBST(LOOKUP_S, lookup-ppc-elf.S)












			AC_DEFINE(OF_ASM_LOOKUP, 1,
				[Whether to use assembly for lookup])
		])

		AS_IF([test x"$enable_seluid16" = x"yes"], [
			AC_DEFINE(OF_SELUID16, 1,
				[Whether to use 16 bit selector UIDs])








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			#if defined(__ppc__) || defined(__PPC__)
			# ifdef __ELF__
			yes
			# endif
			#endif
		], [
			AC_SUBST(LOOKUP_S, lookup-ppc-elf.S)
			AC_DEFINE(OF_ASM_LOOKUP, 1,
				[Whether to use assembly for lookup])
		])

		AC_EGREP_CPP(yes, [
			#if defined(__arm__) || defined(__ARM__)
			# ifdef __ELF__
			yes
			# endif
			#endif
		], [
			AC_SUBST(LOOKUP_S, lookup-arm-elf.S)
			AC_DEFINE(OF_ASM_LOOKUP, 1,
				[Whether to use assembly for lookup])
		])

		AS_IF([test x"$enable_seluid16" = x"yes"], [
			AC_DEFINE(OF_SELUID16, 1,
				[Whether to use 16 bit selector UIDs])
︙︙

Added src/runtime/lookup-arm-elf.S version [4dc54acce5]. 









































































































































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/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012
 *   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_super

.section .text
objc_msg_lookup:
	cmp	r0, #0
	beq	ret_nil

	ldr	r2, [r0, #0]
	ldr	r2, [r2, #32]

lookup:
#ifndef OF_SELUID16
	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]

	cmp	r2, #0
	beq	objc_not_found_handler(PLT)

	mov	r0, r2
	bx	lr

objc_msg_lookup_super:
	ldr	r2, [r0, #0]
	cmp	r0, #0
	beq	ret_nil

	ldr	r2, [r0, #4]
	ldr	r2, [r2, #32]

	b	lookup

ret_nil:
	adr	r0, nil_method
	bx	lr

nil_method:
	mov	r0, #0
	bx	lr

.type objc_msg_lookup, %function
.type objc_msg_lookup_super, %function
.size objc_msg_lookup, objc_msg_lookup_super-objc_msg_lookup
.size objc_msg_lookup_super, ret_nil-objc_msg_lookup_super