genode/base/src/platform/arm/crt0.s

/**
 * \brief   Startup code for Genode applications on ARM
 * \author  Norman Feske
 * \date    2007-04-28
 */

/*
 * Copyright (C) 2007-2013 Genode Labs GmbH
 *
 * This file is part of the Genode OS framework, which is distributed
 * under the terms of the GNU General Public License version 2.
 */

/*--- .text (program code) -------------------------*/
.section ".text.crt0"

	.globl _start
_start:

	ldr r4, .initial_sp
	str sp, [r4]

	ldr  sp, .stack_high
	b    _main

.initial_sp: .word __initial_sp
.stack_high: .word _stack_high

	.globl	__dso_handle
__dso_handle: .long 0

/*--- .bss (non-initialized data) ------------------*/
.section ".bss"

	.p2align 4
	.globl	_stack_low
_stack_low:
	.space	128*1024
	.globl	_stack_high
_stack_high:

	/* initial value of the SP register */
	.globl  __initial_sp
__initial_sp: .space 4
Imported Genode release 11.11 2011-12-22 16:19:25 +01:00			`/**`
			`* \brief Startup code for Genode applications on ARM`
			`* \author Norman Feske`
			`* \date 2007-04-28`
			`*/`

			`/*`
Update copyright headers to 2013 2013-01-10 21:44:47 +01:00			`* Copyright (C) 2007-2013 Genode Labs GmbH`
Imported Genode release 11.11 2011-12-22 16:19:25 +01:00			`*`
			`* This file is part of the Genode OS framework, which is distributed`
			`* under the terms of the GNU General Public License version 2.`
			`*/`

			`/--- .text (program code) -------------------------/`
			`.section ".text.crt0"`

			`.globl _start`
			`_start:`

base-linux: add ARM support This patch introduces a new platform 'linux_arm' for building and running Genode/Linux on an ARM device. Known limitations: - libc 'setjmp()'/'longjmp()' doesn't currently save/restore floating point registers Fixes #746. 2013-05-24 11:04:42 +02:00			`ldr r4, .initial_sp`
			`str sp, [r4]`

			`ldr sp, .stack_high`
Imported Genode release 11.11 2011-12-22 16:19:25 +01:00			`b _main`

base-linux: add ARM support This patch introduces a new platform 'linux_arm' for building and running Genode/Linux on an ARM device. Known limitations: - libc 'setjmp()'/'longjmp()' doesn't currently save/restore floating point registers Fixes #746. 2013-05-24 11:04:42 +02:00			`.initial_sp: .word __initial_sp`
			`.stack_high: .word _stack_high`
Imported Genode release 11.11 2011-12-22 16:19:25 +01:00
			`.globl __dso_handle`
crt0 cleanup - use the generic 'crt0.s' for Linux - move the read-only '__dso_handle' definition into the '.text' section - move the '__initial_sp' definition into the '.bss' section - remove the '_main_utcb' definition Part of #766. 2013-06-06 17:43:13 +02:00			`__dso_handle: .long 0`
base-linux: add ARM support This patch introduces a new platform 'linux_arm' for building and running Genode/Linux on an ARM device. Known limitations: - libc 'setjmp()'/'longjmp()' doesn't currently save/restore floating point registers Fixes #746. 2013-05-24 11:04:42 +02:00
Imported Genode release 11.11 2011-12-22 16:19:25 +01:00			`/--- .bss (non-initialized data) ------------------/`
			`.section ".bss"`

ARM stack alignment Align the stack on a 16-byte boundary as on the x86_32 platform. Fixes #236. 2012-06-12 14:37:00 +02:00			`.p2align 4`
Imported Genode release 11.11 2011-12-22 16:19:25 +01:00			`.globl _stack_low`
			`_stack_low:`
arm: raise stack size of main thread With 64K stack size, when doing 'make core' in noux on base-hw, the main thread of /libexec/gcc/arm-elf-eabi/4.7.2/cc1plus runs into a stack overflow during the compilation of core/main.o . Thus raise the stack size to 128K. fix #964 2013-12-01 22:20:04 +01:00			`.space 128*1024`
Imported Genode release 11.11 2011-12-22 16:19:25 +01:00			`.globl _stack_high`
			`_stack_high:`

crt0 cleanup - use the generic 'crt0.s' for Linux - move the read-only '__dso_handle' definition into the '.text' section - move the '__initial_sp' definition into the '.bss' section - remove the '_main_utcb' definition Part of #766. 2013-06-06 17:43:13 +02:00			`/* initial value of the SP register */`
			`.globl __initial_sp`
			`__initial_sp: .space 4`