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28 lines
578 B
ArmAsm
28 lines
578 B
ArmAsm
;
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; Ullrich von Bassewitz, 08.08.1998
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; Christian Krueger, 11-Mar-2017, optimization
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;
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; CC65 runtime: save eax into temp storage/restore eax from temp storage
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;
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.export saveeax, resteax
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.importzp sreg, regsave
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saveeax:
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sta regsave
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stx regsave+1
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ldy sreg
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sty regsave+2
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ldy sreg+1
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sty regsave+3
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rts
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resteax:
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lda regsave+3
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sta sreg+1
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lda regsave+2
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sta sreg
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ldx regsave+1
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lda regsave
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rts
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