mirror of
https://github.com/cc65/cc65.git
synced 2024-11-17 09:07:32 +00:00
40 lines
649 B
ArmAsm
40 lines
649 B
ArmAsm
;
|
|
; Ullrich von Bassewitz, 03.06.1998
|
|
;
|
|
; Heap variables and initialization.
|
|
;
|
|
|
|
.export __horg, __hptr, __hend, __hfirst, __hlast
|
|
.constructor initheap, 24
|
|
.import __BSS_RUN__, __BSS_SIZE__, __STACKSIZE__
|
|
.importzp sp
|
|
|
|
.data
|
|
|
|
__horg:
|
|
.word __BSS_RUN__+__BSS_SIZE__ ; Linker calculates this symbol
|
|
__hptr:
|
|
.word __BSS_RUN__+__BSS_SIZE__ ; Dito
|
|
__hend:
|
|
.word __BSS_RUN__+__BSS_SIZE__
|
|
__hfirst:
|
|
.word 0
|
|
__hlast:
|
|
.word 0
|
|
|
|
|
|
; Initialization. Will be called from startup!
|
|
|
|
.code
|
|
|
|
initheap:
|
|
sec
|
|
lda sp
|
|
sbc #<__STACKSIZE__
|
|
sta __hend
|
|
lda sp+1
|
|
sbc #>__STACKSIZE__
|
|
sta __hend+1
|
|
rts
|
|
|