crt0.s

来自「文件内包含了nuclues的内核代码和针对Power PC的编译器。需要用Vir」· S 代码 · 共 44 行

#
#	src/crtppc/crt0.s: startup for an embedded environment: PowerPC
#	---------------------------------------------------------------
#
#	Copyright 1998 Diab Data, Inc.

	.file		"crt0.c"
	.text
	.align		2
    
#------------------------------------------------------------- .init section --
	.section	.init$00,4,C
	.globl		__init
__init:					# Entry to __init, called by
	mfspr		r0,8		# __init_main called above.
	stwu		r1,-64(r1)
	stw		r0,68(r1)

	# Linker places .init sections from other modules, containing	    
	# calls to initialize global objects, here.			    

	.section	.init$99,4,C
	lwz		r0,68(r1)	# Return from __init.
	addi		r1,r1,64
	mtspr		8,r0
	blr

#------------------------------------------------------------- .fini section --
	.section	.fini$00,4,C
	.globl		__fini
__fini:					# Entry to __fini, called by exit().
	mfspr		r0,8
	stwu		r1,-64(r1)
	stw		r0,68(r1)

	# Linker places .fini sections from other modules, containing	    
	# calls to destroy global objects, here.			    

	.section	.fini$99,4,C
	lwz		r0,68(r1)	# Return from __fini.
	addi		r1,r1,64
	mtspr		8,r0
	blr