229 lines
5.6 KiB
NASM
229 lines
5.6 KiB
NASM
; Copyright (C) 2014 Renesas Electronics Corporation
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; RENESAS ELECTRONICS CONFIDENTIAL AND PROPRIETARY.
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; This program must be used solely for the purpose for which
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; it was furnished by Renesas Electronics Corporation. No part of this
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; program may be reproduced or disclosed to others, in any
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; form, without the prior written permission of Renesas Electronics
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; Corporation.
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; NOTE : THIS IS A TYPICAL EXAMPLE.
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$IFNDEF __RENESAS_VERSION__
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__RENESAS_VERSION__ .EQU 0x01000000
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$ENDIF
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.public _start
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.public _exit
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;-----------------------------------------------------------------------------
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; RAM section
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;-----------------------------------------------------------------------------
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.SECTION .dataR, DATA
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.SECTION .sdataR, DATA
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; .SECTION .datafR, DATAF
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; .SECTION .textfR, TEXTF
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$IF (__RENESAS_VERSION__ < 0x01010000) ; for CC-RL V1.00
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;-----------------------------------------------------------------------------
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; stack area
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;-----------------------------------------------------------------------------
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; !!! [CAUTION] !!!
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; Set up stack size suitable for a project.
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.SECTION .stack_bss, BSS
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_stackend:
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.DS 0x200
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_stacktop:
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$ENDIF
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;-----------------------------------------------------------------------------
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; RESET vector
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;-----------------------------------------------------------------------------
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_start .VECTOR 0
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;-----------------------------------------------------------------------------
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; startup
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;-----------------------------------------------------------------------------
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.SECTION .text, TEXT
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_start:
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;--------------------------------------------------
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; setting register bank
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;--------------------------------------------------
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; SEL RB0
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;--------------------------------------------------
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; setting mirror area
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;--------------------------------------------------
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; ONEB !PMC ; mirror area = 10000-1FFFFH
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;--------------------------------------------------
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; setting the stack pointer
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;--------------------------------------------------
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$IF (__RENESAS_VERSION__ >= 0x01010000)
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MOVW SP,#LOWW(__STACK_ADDR_START)
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$ELSE ; for CC-RL V1.00
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MOVW SP,#LOWW(_stacktop)
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$ENDIF
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;--------------------------------------------------
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; initializing stack area
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;--------------------------------------------------
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;$IF (__RENESAS_VERSION__ >= 0x01010000)
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; MOVW AX,#LOWW(__STACK_ADDR_END)
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;$ELSE ; for CC-RL V1.00
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; MOVW AX,#LOWW(_stackend)
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;$ENDIF
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; CALL !!_stkinit
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;--------------------------------------------------
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; hardware initialization
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;--------------------------------------------------
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CALL !!_hdwinit
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;--------------------------------------------------
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; initializing BSS
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;--------------------------------------------------
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; clear external variables which doesn't have initial value (near)
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MOVW HL,#LOWW(STARTOF(.bss))
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MOVW AX,#LOWW(STARTOF(.bss) + SIZEOF(.bss))
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BR $.L2_BSS
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.L1_BSS:
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MOV [HL+0],#0
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INCW HL
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.L2_BSS:
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CMPW AX,HL
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BNZ $.L1_BSS
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; clear saddr variables which doesn't have initial value
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MOVW HL,#LOWW(STARTOF(.sbss))
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MOVW AX,#LOWW(STARTOF(.sbss) + SIZEOF(.sbss))
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BR $.L2_SBSS
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.L1_SBSS:
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MOV [HL+0],#0
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INCW HL
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.L2_SBSS:
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CMPW AX,HL
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BNZ $.L1_SBSS
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; clear external variables which doesn't have initial value (far)
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; MOV ES,#HIGHW(STARTOF(.bssf))
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; MOVW HL,#LOWW(STARTOF(.bssf))
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; MOVW AX,#LOWW(STARTOF(.bssf) + SIZEOF(.bssf))
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; BR $.L2_BSSF
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;.L1_BSSF:
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; MOV ES:[HL+0],#0
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; INCW HL
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;.L2_BSSF:
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; CMPW AX,HL
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; BNZ $.L1_BSSF
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;--------------------------------------------------
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; ROM data copy
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;--------------------------------------------------
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; copy external variables having initial value (near)
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MOV ES,#HIGHW(STARTOF(.data))
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MOVW BC,#LOWW(SIZEOF(.data))
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BR $.L2_DATA
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.L1_DATA:
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DECW BC
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MOV A,ES:LOWW(STARTOF(.data))[BC]
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MOV LOWW(STARTOF(.dataR))[BC],A
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.L2_DATA:
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CLRW AX
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CMPW AX,BC
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BNZ $.L1_DATA
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; copy saddr variables having initial value
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MOV ES,#HIGHW(STARTOF(.sdata))
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MOVW BC,#LOWW(SIZEOF(.sdata))
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BR $.L2_SDATA
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.L1_SDATA:
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DECW BC
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MOV A,ES:LOWW(STARTOF(.sdata))[BC]
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MOV LOWW(STARTOF(.sdataR))[BC],A
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.L2_SDATA:
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CLRW AX
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CMPW AX,BC
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BNZ $.L1_SDATA
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; copy external variables having initial value (far)
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; MOVW BC,#LOWW(SIZEOF(.dataf))
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; BR $.L2_DATAF
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;.L1_DATAF:
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; DECW BC
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; MOV ES,#HIGHW(STARTOF(.dataf))
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; MOV A,ES:LOWW(STARTOF(.dataf))[BC]
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; MOV ES,#HIGHW(STARTOF(.datafR))
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; MOV ES:LOWW(STARTOF(.datafR))[BC],A
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;.L2_DATAF:
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; CLRW AX
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; CMPW AX,BC
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; BNZ $.L1_DATAF
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; copy .text to RAM
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; MOV C,#HIGHW(STARTOF(.textf))
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; MOVW HL,#LOWW(STARTOF(.textf))
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; MOVW DE,#LOWW(STARTOF(.textfR))
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; BR $.L2_TEXT
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;.L1_TEXT:
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; MOV A,C
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; MOV ES,A
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; MOV A,ES:[HL]
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; MOV [DE],A
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; INCW DE
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; INCW HL
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; CLRW AX
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; CMPW AX,HL
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; SKNZ
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; INC C
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;.L2_TEXT:
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; MOVW AX,HL
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; CMPW AX,#LOWW(STARTOF(.text) + SIZEOF(.text))
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; BNZ $.L1_TEXT
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;--------------------------------------------------
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; call main function
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;--------------------------------------------------
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CALL !!_main ; main();
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;--------------------------------------------------
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; call exit function
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;--------------------------------------------------
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CLRW AX ; exit(0)
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_exit:
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BR $_exit
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;-----------------------------------------------------------------------------
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; section
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;-----------------------------------------------------------------------------
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$IF (__RENESAS_VERSION__ >= 0x01010000)
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.SECTION .RLIB, TEXTF
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.L_section_RLIB:
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.SECTION .SLIB, TEXTF
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.L_section_SLIB:
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$ENDIF
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.SECTION .textf, TEXTF
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.L_section_textf:
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.SECTION .const, CONST
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.L_section_const:
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.SECTION .constf, CONSTF
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.L_section_constf:
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.SECTION .data, DATA
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.L_section_data:
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;.SECTION .dataf, DATAF
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;.L_section_dataf:
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.SECTION .sdata, SDATA
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.L_section_sdata:
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.SECTION .bss, BSS
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.L_section_bss:
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;.SECTION .bssf, BSSF
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;.L_section_bssf:
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.SECTION .sbss, SBSS
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.L_section_sbss:
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.SECTION User_Data, CONSTF
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.ORG 0x19ff0
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.DB4 0xAA5555AA
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