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pret
GitHub Repository: pret/pokered
 Path: blob/master/macros/farcall.asm
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; Far calls to another bank

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; There is no difference between `farcall` and `callfar`, except the arbitrary

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; order in which they set `b` and `hl` before calling `FarCall`.

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; We use the more natural name "farcall" for the more common order.

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; The same goes for `farjp` and `jpfar`.

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MACRO farcall

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	ld b, BANK(\1)

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	ld hl, \1

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	call Bankswitch

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ENDM

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MACRO callfar

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	ld hl, \1

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	ld b, BANK(\1)

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	call Bankswitch

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ENDM

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MACRO farjp

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	ld b, BANK(\1)

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	ld hl, \1

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	jp Bankswitch

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ENDM

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MACRO jpfar

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	ld hl, \1

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	ld b, BANK(\1)

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	jp Bankswitch

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ENDM

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MACRO homecall

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	ldh a, [hLoadedROMBank]

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	push af

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	ld a, BANK(\1)

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	ldh [hLoadedROMBank], a

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	ld [rROMB], a

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	call \1

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	pop af

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	ldh [hLoadedROMBank], a

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	ld [rROMB], a

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ENDM

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MACRO homecall_sf ; homecall but save flags by popping into bc instead of af

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	ldh a, [hLoadedROMBank]

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	push af

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	ld a, BANK(\1)

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	ldh [hLoadedROMBank], a

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	ld [rROMB], a

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	call \1

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	pop bc

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	ld a, b

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	ldh [hLoadedROMBank], a

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	ld [rROMB], a

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ENDM

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