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34 lines
661 B
ArmAsm
34 lines
661 B
ArmAsm
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; Ullrich von Bassewitz, 26.10.2000
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; CC65 runtime: Push value in a onto the stack
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.export pusha0sp, pushaysp, pusha
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.importzp sp
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.macpack cpu
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; Beware: The optimizer knows about this function!
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pusha0sp:
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ldy #$00
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pushaysp:
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lda (sp),y
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pusha: ldy sp ; (3)
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beq @L1 ; (6)
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dec sp ; (11)
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.if (.cpu .bitand CPU_ISET_65SC02)
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sta (sp)
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.else
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ldy #0 ; (13)
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sta (sp),y ; (19)
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.endif
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rts ; (25)
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@L1: dec sp+1 ; (11)
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dec sp ; (16)
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sta (sp),y ; (22)
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rts ; (28)
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