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29 lines
461 B
ArmAsm
29 lines
461 B
ArmAsm
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; Ullrich von Bassewitz, 31.08.1998
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; CC65 runtime: Load ax from offset in stack
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;
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.export ldax0sp, ldaxysp
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.importzp sp
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; Beware: The optimizer knows about the value in Y after return!
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ldax0sp:
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ldy #1
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ldaxysp:
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lda (sp),y ; get high byte
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tax ; and save it
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bne L1 ; Try to generate FAST code
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dey ; point to lo byte
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lda (sp),y ; load low byte
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rts
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L1: php ; Save Z flag
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dey
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lda (sp),y
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plp
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rts
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