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50 lines
917 B
ArmAsm
50 lines
917 B
ArmAsm
;
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; Ullrich von Bassewitz, 06.08.1998
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; Christian Krueger, 11-Mar-2017, added 65SC02 optimization
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;
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; CC65 runtime: long push
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;
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;
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; push eax on stack
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;
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.export pushl0, push0ax, pusheax
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.import decsp4
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.importzp sp, sreg
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.macpack cpu
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pushl0:
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lda #0
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tax
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push0ax:
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.if (.cpu .bitand ::CPU_ISET_65SC02)
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stz sreg
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stz sreg+1
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.else
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ldy #$00
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sty sreg
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sty sreg+1
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.endif
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pusheax:
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pha ; decsp will destroy A (but not X)
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jsr decsp4
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ldy #3
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lda sreg+1
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sta (sp),y
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dey
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lda sreg
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sta (sp),y
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dey
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txa
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sta (sp),y
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pla
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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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dey
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sta (sp),y
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.endif
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rts
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