Renesas M3T-MR100 Manual De Usuario
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7.3.1
C Language Startup Program (crt0mr.a30)
Figure 7.11 shows the C language startup program(crt0mr.a30).
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; ****************************************************************
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;
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;
MR100 start up program for C language
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;
COPYRIGHT(C) 2003,2006,2007 RENESAS TECHNOLOGY CORPORATION
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;
AND RENESAS SOLUTIONS CORPORATION ALL RIGHTS RESERVED
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; MR100
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;
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; ****************************************************************
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;
"$Id: crt0mr.a30 512 2007-07-09 10:11:36Z inui $"
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;*A1* 2005-02-28 for ES
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;*G0* 2006-06-15 for MR100/4
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;
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.LIST
OFF
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.INCLUDE
c_sec.inc
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.INCLUDE
mr100.inc
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.INCLUDE
sys_rom.inc
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.INCLUDE
sys_ram.inc
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.LIST
ON
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.GLB __SYS_INITIAL
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.GLB __END_INIT
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.GLB __init_sys,__init_tsk
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regoffset .EQU 0
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;-----------------------------------------------------------------
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; SBDATA area definition
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;-----------------------------------------------------------------
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.GLB __SB__
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.SB __SB__
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;=================================================================
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; Initialize Macro declaration
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;-----------------------------------------------------------------
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BZERO .macro
TOP_,SECT_
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XOR.B
R0L,R0L
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mov.l
#TOP_,A1
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mov.l
#sizeof
SECT_,R7R5
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sstr.b
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.endm
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BCOPY .macro
FROM_,TO_,SECT_
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mov.l
#FROM_,A0
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mov.l
#TO_,A1
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mov.l
#sizeof
SECT_,R7R5
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smovf.b
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.endm
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;=================================================================
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; Interrupt section start
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;-----------------------------------------------------------------
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.SECTION
MR_KERNEL,CODE,ALIGN
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;-----------------------------------------------------------------
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; after reset,this program will start
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;-----------------------------------------------------------------
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__SYS_INITIAL:
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LDC
#__Sys_Sp,ISP
; set initial ISP
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; MOV.B #2,0AH
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;
MOV.B
#00,PMOD
; Set Processor Mode Register
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;
MOV.B
#0,0AH
;
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LDC #00000010H,FLG
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LDC #__SB__,SB
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LDC #00000000H,FLG
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LDC #__Sys_Sp,FB
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LDC #__SB__,SB
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;=================================================================
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; MR_RAM zero clear
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;--------------------------------------------------------
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BZERO
MR_RAM_top,MR_RAM
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;=================================================================
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; NEAR area initialize.
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; FAR area initialize.