HiSprite/macros.s
Quinn Dunki ca2bd7c586 Optimization & refinement
- Compiler now tracks cycle counts of blitters
- More interesting sample app
- Better VBL sync macro
2017-05-29 13:14:37 -07:00

133 lines
1.8 KiB
ArmAsm

;
; macros.s
; Generally useful macros for 6502 code
;
; Created by Quinn Dunki on 8/15/14.
; Copyright (c) 2014 One Girl, One Laptop Productions. All rights reserved.
;
; Macros
.macro SETSWITCH name ; Sets the named softswitch (assumes write method)
sta name
.endmacro
.macro SAVE_AXY ; Saves all registers
pha
phx
phy
.endmacro
.macro RESTORE_AXY ; Restores all registers
ply
plx
pla
.endmacro
.macro SAVE_AY ; Saves accumulator and Y index
pha
phy
.endmacro
.macro RESTORE_AY ; Restores accumulator and Y index
ply
pla
.endmacro
.macro SAVE_AX ; Saves accumulator and X index
pha
phx
.endmacro
.macro RESTORE_AX ; Restores accumulator and X index
plx
pla
.endmacro
.macro SAVE_XY ; Saves X and Y index
phx
phy
.endmacro
.macro RESTORE_XY ; Restores X and Y index
ply
plx
.endmacro
.macro SAVE_ZPP ; Saves Zero Page locations we use for parameters
lda PARAM0
pha
lda PARAM1
pha
lda PARAM2
pha
lda PARAM3
pha
.endmacro
.macro RESTORE_ZPP ; Restores Zero Page locations we use for parameters
pla
sta PARAM3
pla
sta PARAM2
pla
sta PARAM1
pla
sta PARAM0
.endmacro
.macro SAVE_ZPS ; Saves Zero Page locations we use for scratch
lda SCRATCH0
pha
lda SCRATCH1
pha
.endmacro
.macro RESTORE_ZPS ; Restores Zero Page locations we use for scratch
pla
sta SCRATCH1
pla
sta SCRATCH0
.endmacro
.macro PARAM16 addr
lda #<addr
sta PARAM0
lda #>addr
sta PARAM1
.endmacro
.macro CALL16 func,addr
PARAM16 addr
jsr func
.endmacro
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Rendering macros
;
.macro VBL_SYNC ; Synchronize with vertical blanking
@macroWaitVBLToFinish:
lda $C019
bpl @macroWaitVBLToFinish
@macroWaitVBLToStart:
lda $C019
bmi @macroWaitVBLToStart
.endmacro