Appendix a initialization and link files, Initialization file, Appendix a – Zilog Z80380 User Manual
Page 91: Initialization and link files, Nitialization, Ppendix
UM004001-COR1103
A–1
380 C-
COMPILER
U
SER
’
S
M
ANUAL
A
PPENDIX
A
I
NITIALIZATION
AND
L
INK
F
ILES
;--------------------------------------------------------------
INITIALIZATION FILE
The following is the initialization file that is included with the 380 C-comiler installation.
;***********************************************************************
;*
Z380Boot: C Runtime Startup
;*
Copyright (c) ZiLOG, 1999
;***********************************************************************
;***********************************************************************
.sect
".bss"
; In case no-one else names it
;***********************************************************************
.sect
".startup"
; This should be placed properly
.def
_c_int0
.def
__exit
.ref
_main
.ref
.BSS_BASE,.BSS_LENGTH
.ref
.TOS
.INITBSS .equ 1
; Zero the .bss section ?
;**********************************
; Program entry point
;**********************************
_c_int0:
setc
xm
; Extended Mode (32-bit pointers)
setc
lw
; LongWord Mode(32-bit integers)
ldw.iw
sp,.TOS
; Setup SP
.if
.INITBSS
;------ Initialize the .BSS section to zero