shithub: pokecrystal

ref: c9dba36d13286d8930e69f5b86228e89e2a1e791
dir: /engine/farcall.asm/

View raw version 
FarCall_de: ; 2d54
; Call a:de.
; Preserves other registers.

	ld [hBuffer], a
	ld a, [hROMBank]
	push af
	ld a, [hBuffer]
	rst Bankswitch
	call .de
	jr ReturnFarCall

.de
	push de
	ret
; 2d63


FarCall_hl: ; 2d63
; Call a:hl.
; Preserves other registers.

	ld [hBuffer], a
	ld a, [hROMBank]
	push af
	ld a, [hBuffer]
	rst Bankswitch
	call Function2d82
; 2d6e

ReturnFarCall: ; 2d6e
; We want to retain the contents of f.
; To do this, we can pop to bc instead of af.
	
	ld a, b
	ld [$cfb9], a
	ld a, c
	ld [$cfba], a
	
; Restore the working bank.
	pop bc
	ld a, b
	rst Bankswitch
	
	ld a, [$cfb9]
	ld b, a
	ld a, [$cfba]
	ld c, a
	ret
; 2d82

Function2d82: ; 2d82
	jp [hl]
; 2d83