crt0.s

来自「RT-Thread是发展中的下一代微内核嵌入式实时操作系统」· S 代码 · 共 28 行

@
@ File      : crt0.S
@ This file is part of RT-Thread RTOS
@ COPYRIGHT (C) 2006, RT-Thread Development Team
@
@ The license and distribution terms for this file may be
@ found in the file LICENSE in this distribution or at
@ http://www.rt-thread.com/license/LICENSE.
@
@ Change Logs:
@ Date           Author       Notes
@ 2006-07-03     Bernard      the first draft
@

	.text

	.global _start
	.global _mainCRTStartup
	
_start:
_mainCRTStartup:
	ldr	r0, [sp], #4	@ get argc
	ldr	r1, [sp]		@ get argv
	add	r2, r1, r0, lsl #2
	add	r2, r2, #4		@ get envp
	mov	fp, #0			@ clear frame pointer
	bl	__rtthread_main