📄 cstart.asm
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; @(#) cstart.asm 1.7 02/11/08 14:09:38 @(#)
;
; C startup
;
;
; set reset interrupt vector to point to cstart
;
.pseg reset_vector,abs=0xfffe
.data cstart
;
; C runtime startup code
;
.pseg cstartup$code
.global cstart
.global __main_returned
.extern __rominit
.extern _main
.extern __max_ram0_
cstart:
mov #0x5a80,&0x120 ; turn off watchdog timer
mov #__max_ram0_ + 1,sp ; set stack to max ram address + 1
call #__rominit ; initialize RAM from ROM
call #_main ; run the C program
__main_returned:
jmp __main_returned ; loop forever if main returns
;
; provide a null initialization descriptor, in case there is no
; RAM initialization required, so we don't get complaints from
; the linker when trying to link rominit, which will refer
; to the initialization descriptor segment.
;
.iseg _idesc
.data 0
.data 0
.data 0
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