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48 lines
1009 B
ArmAsm
48 lines
1009 B
ArmAsm
;
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; Startup code for geos
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;
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; Maciej 'YTM/Elysium' Witkowiak
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; 26.10.99, 10.3.2000, 15.8.2001, 23.12.2002
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.export _exit
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.export __STARTUP__ : absolute = 1 ; Mark as startup
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.import __RAM_START__, __RAM_SIZE__ ; Linker generated
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.import __STACKSIZE__ ; Linker generated
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.import initlib, donelib
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.import callmain
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.import zerobss
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.importzp sp
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.include "../inc/jumptab.inc"
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; ------------------------------------------------------------------------
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; Place the startup code in a special segment.
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.segment "STARTUP"
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; Clear the BSS data
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jsr zerobss
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; Setup stack
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lda #<(__RAM_START__ + __RAM_SIZE__ + __STACKSIZE__)
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sta sp
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lda #>(__RAM_START__ + __RAM_SIZE__ + __STACKSIZE__)
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sta sp+1 ; Set argument stack ptr
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; Call module constructors
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jsr initlib
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; Push arguments and call main()
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cli
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jsr callmain
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; Call module destructors.
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_exit: jsr donelib ; Run module destructors
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jmp EnterDeskTop ; return control to the system
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