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78 lines
1.3 KiB
ArmAsm
78 lines
1.3 KiB
ArmAsm
;
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; Ullrich von Bassewitz, 2003-03-07
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; Maciej Witkowiak, 2003-05-02
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;
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; Setup arguments for main
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;
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; There is always either 1 or 3 arguments:
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; <program name>,0
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; or
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; <program name>, <data file name>, <data disk name>, 0
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; the 2nd case is when using DeskTop user drags an icon of a file and drops it
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; on icon of your application
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;
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.constructor initmainargs, 24
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.import __argc, __argv
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.include "const.inc"
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.include "geossym.inc"
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.segment "INIT"
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; Setup arguments for main
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initmainargs:
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; Setup a pointer to our argv vector
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lda #<argv
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sta __argv
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lda #>argv
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sta __argv+1
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; Copy program name
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ldy #0
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@fn_loop:
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lda dirEntryBuf+OFF_FNAME,y
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.ifdef __GEOS_CBM__
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cmp #$a0
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.else
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cmp #0
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.endif
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beq @fn_end
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sta argv0,y
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iny
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cpy #16+1
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bne @fn_loop
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@fn_end:
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lda #0
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sta argv0,y
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sta __argc+1
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; Check if there are any more arguments
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lda dataFileName
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bne @threeargs
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ldx #0 ; no dataFileName - NULL the 2nd argument
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stx argv+2
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stx argv+3
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inx ; there is only one argument
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bne @setargc
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@threeargs:
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ldx #3 ; there are three arguments
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@setargc:
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stx __argc
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rts
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.data
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argv:
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.word argv0 ; Pointer to program name
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.word dataFileName ; dataFileName or NULL if last one
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.word dataDiskName ; dataDiskName
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.word $0000 ; last one must be NULL
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.bss
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argv0:
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.res 17 ; Program name
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