bsecrt0.lst

ucos移植到mpc860的源码

  00000000 00                     1 	#
  00000000 00                     2 	# bsecrt0.s
  00000000 00                     3 	#
  00000000 00                     4 	# PowerPC C Runtime Initialization code for embedded Diab environment
  00000000 00                     5 	# Adapted from Diab PowerPC crt0.s code
  00000000 00                     6 	#
  00000000 00                     7 	# Functions:
  00000000 00                     8 	#	None
  00000000 00                     9 	#
  00000000 00                    10 	# Author: Harry E. Barnett 11/11/99
  00000000 00                    11 	# [e-mail] http://www.hbbse.com
  00000000 00                    12 	#
  00000000 00                    13 	# Version V1.00
  00000000 00                    14 	#
  00000000 00                    15 	#####################################################################
  00000000 00                    16 	
  00000000 00                    17 	
  00000000 00                    18 		.list
  00000000 00                    19 		.file		"bsecrt0.s"
  00000000 00                    20 		.title		"MPC823 C Runtime Initialzation code (Diab)"
  00000000 00                    21 	
  00000000 00                    22 		.global		_start
  00000000 00                    23 	
  00000000 00                    24 		.text
  00000000 00                    25 		.align		2
  00000000 00                    26 	
  00000000 00                    27 		.org		0x00004000
  00004000 03                    28 	
  00004000 03                    29 	_start:
  00004000 03  3d60 0000         30 		addis		r11,r0,__SP_INIT@ha	# Initialize stack pointer r1 to
  00004004 03  382b 0000         31 		addi		r1,r11,__SP_INIT@l	# value in linker command file.
  00004008 03  3da0 0000         32 		addis		r13,r0,_SDA_BASE_@ha	# Initialize r13 to sdata base
  0000400c 03  39ad 0000         33 		addi		r13,r13,_SDA_BASE_@l	# (provided by linker).
  00004010 03  3c40 0000         34 		addis		r2,r0,_SDA2_BASE_@ha	# Initialize r2 to sdata2 base
  00004014 03  3842 0000         35 		addi		r2,r2,_SDA2_BASE_@l	# (provided by linker).
  00004018 03  3800 0000         36 		addi		r0,r0,0			# Clear r0.
  0000401c 03  9401 ffc0         37 		stwu		r0,-64(r1)		# Terminate stack.
  00004020 03                    38 	
  00004020 03                    39 		#
  00004020 03                    40 		# Insert other initialization code here.
  00004020 03                    41 		
  00004020 03  4800 0001         42 		bl		copy_to_ram
  00004024 03                    43 		
  00004024 03                    44 		# End
  00004024 03                    45 	
  00004024 03  4800 0001         46 		bl		__init_main	# Finish initialization; call main().
  00004028 03  4800 0000         47 		b		exit		# Never returns.
  0000402c 03  4800 0001         48 		bl		main		# Dummy to pull in main() as soon as
  00004030 03                    49 						# possible.
  00004030 03                    50 	    
  00004030 03                    51 	#------------------------------------------------------------- .init section --
  00004030 03                    52 		.section	.init$00,4,C
  00000000 08                    53 		.globl		__init
  00000000 08                    54 	__init:					# Entry to __init, called by
  00000000 08  7c08 02a6         55 		mfspr		r0,8		# __init_main called above.
  00000004 08  9421 ffc0         56 		stwu		r1,-64(r1)
  00000008 08  9001 0044         57 		stw		r0,68(r1)
  0000000c 08                    58 	
  0000000c 08                    59 		# Linker places .init sections from other modules, containing	    
  0000000c 08                    60 		# calls to initialize global objects, here.			    
  0000000c 08                    61 	
  0000000c 08                    62 		.section	.init$99,4,C
  00000000 0b  8001 0044         63 		lwz		r0,68(r1)	# Return from __init.
  00000004 0b  3821 0040         64 		addi		r1,r1,64
  00000008 0b  7c08 03a6         65 		mtspr		8,r0
  0000000c 0b  4e80 0020         66 		blr
  00000010 0b                    67 	
  00000010 0b                    68 	#------------------------------------------------------------- .fini section --
  00000010 0b                    69 		.section	.fini$00,4,C
  00000000 0e                    70 		.globl		__fini
  00000000 0e                    71 	__fini:					# Entry to __fini, called by exit().
  00000000 0e  7c08 02a6         72 		mfspr		r0,8
  00000004 0e  9421 ffc0         73 		stwu		r1,-64(r1)
  00000008 0e  9001 0044         74 		stw		r0,68(r1)
  0000000c 0e                    75 	
  0000000c 0e                    76 		# Linker places .fini sections from other modules, containing	    
  0000000c 0e                    77 		# calls to destroy global objects, here.			    
  0000000c 0e                    78 	
  0000000c 0e                    79 		.section	.fini$99,4,C
  00000000 11  8001 0044         80 		lwz		r0,68(r1)	# Return from __fini.
  00000004 11  3821 0040         81 		addi		r1,r1,64
  00000008 11  7c08 03a6         82 		mtspr		8,r0
  0000000c 11  4e80 0020         83 		blr