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shave some bytes

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4am 2020-11-30 14:55:10 -05:00
parent 22b40e9d11
commit 3e504a80d8
1 changed files with 146 additions and 149 deletions
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295
src/fx/fx.dhgr.48boxes.common.a
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@ -80,22 +80,25 @@ k_right_mask_aux = 8 ; must be 8
k_current_page = 9
k_switch_to_main = 10
k_switch_to_aux = 11
k_inx_and_recalc = 12
k_recalc = 13
k_set_row_count = 14
k_set_first_row = 15
k_iny = 16
k_dey = 17
k_save_y = 18
k_restore_y = 19
k_middle_jsr = 20
k_outer_jsr = 21
k_middle_branch = 22
k_outer_branch = 23
k_bitcopy = 24
k_mask_copy_pre = 25
k_mask_copy_post = 26
k_byte_copy = 27
k_switch_to_aux_and_byte_copy = 12
k_inx_and_recalc = 13
k_recalc = 14
k_set_row_count = 15
k_set_first_row = 16
k_iny2 = 17
k_iny = 18
k_dey = 19
k_save_y = 20
k_restore_y = 21
k_middle_jsr = 22
k_outer_jsr = 23
k_middle_branch = 24
k_outer_branch = 25
k_mask_copy_pre = 26
k_mask_copy_post = 27
k_byte_copy = 28
k_byte_copy_and_iny = 29
k_bitcopy = 30 ; must be last token
!source "src/fx/macros.a"
@ -179,37 +182,54 @@ NextBox dex
; Note that several pieces overlap in order to minimize code size.
; Everything from CODEGEN_COPY_START and onward is copied to zero page for
; the code generation phase on program startup.
EDGE_LEFT_MASK_MAIN = $01 ; address $01 to match token
EDGE_RIGHT_MASK_MAIN = $02 ; address $02 to match token
LEFT_MASK_MAIN = $03 ; address $03 to match token
RIGHT_MASK_MAIN = $04 ; address $04 to match token
EDGE_LEFT_MASK_AUX = $05 ; address $05 to match token
EDGE_RIGHT_MASK_AUX = $06 ; address $06 to match token
LEFT_MASK_AUX = $07 ; address $07 to match token
RIGHT_MASK_AUX = $08 ; address $08 to match token
CODEGEN_COPY_START
!pseudopc 0 {
!pseudopc 9 {
RTS0
rts ; also terminates MainLoop
RTS0_E
;
EDGE_LEFT_MASK_MAIN ; must be at address $01 to match token
!byte $FD
EDGE_RIGHT_MASK_MAIN ; must be at address $02 to match token
!byte $FD
LEFT_MASK_MAIN ; must be at address $03 to match token
!byte $FD
RIGHT_MASK_MAIN ; must be at address $04 to match token
!byte $FD
EDGE_LEFT_MASK_AUX ; must be at address $05 to match token
!byte $FD
EDGE_RIGHT_MASK_AUX ; must be at address $06 to match token
!byte $FD
LEFT_MASK_AUX ; must be at address $07 to match token
!byte $FD
RIGHT_MASK_AUX ; must be at address $08 to match token
!byte $FD
SWITCH_TO_MAIN
sta $C054
SWITCH_TO_MAIN_E
rts ; also terminates MainLoop
RTS0_E
;
SWITCH_TO_AUX_AND_BYTE_COPY
SWITCH_TO_AUX
sta $C055
lda auxsrc_hgrhi, x
sta src+1
SWITCH_TO_AUX_E
BYTECOPY_AND_INY
BYTECOPY
lda (src), y
sta (dst), y
BYTECOPY_E
SWITCH_TO_AUX_AND_BYTE_COPY_E
INY2
INY1
iny
INY1_E
BYTECOPY_AND_INY_E
iny
INY2_E
;
DEY1
dey
DEY1_E
;
SAVE_Y
sty tmpy
SAVE_Y_E
;
RESTORE_Y
ldy tmpy
RESTORE_Y_E
;
INX_AND_RECALC
inx
@ -244,38 +264,19 @@ BIT_FOR_CLEAR
!byte $29 ; (AND #$44 opcode)
MASKCOPY_PRE_E
;
MASKCOPY_POST
eor (dst), y
sta (dst), y
MASKCOPY_POST_E
codegen_pieces ; address of each of the pieces (on zero page, so 1 byte)
!byte <RTS0
; these 8 addresses are never used so we stuff 8 bytes of unrelated data here
;!byte <EDGE_LEFT_MASK_MAIN
;!byte <EDGE_RIGHT_MASK_MAIN
;!byte <LEFT_MASK_MAIN
;!byte <RIGHT_MASK_MAIN
;!byte <EDGE_LEFT_MASK_AUX
;!byte <EDGE_RIGHT_MASK_AUX
;!byte <LEFT_MASK_AUX
;!byte <RIGHT_MASK_AUX
;
BYTECOPY
lda (src), y
sta (dst), y
BYTECOPY_E
;
DEY1
dey
DEY1_E
;
INY1
iny
INY1_E
;
SAVE_Y
sty tmpy
SAVE_Y_E
;
RESTORE_Y
ldy tmpy
RESTORE_Y_E
;
MIDDLE_JSR
!byte $20,$47
MIDDLE_JSR_E
OUTER_JSR
!byte $20,$48
OUTER_JSR_E
MIDDLE_BRANCH
dec rowcount
!byte $10,$C8
@ -285,54 +286,16 @@ OUTER_BRANCH
dec rowcount
!byte $10,$C6
OUTER_BRANCH_E
codegen_piece_lengths ; length of each of the pieces
!byte RTS0_E-RTS0
!byte 1 ; edge left mask main
!byte 1 ; edge right mask main
!byte 1 ; left mask main
!byte 1 ; right mask main
!byte 1 ; edge left mask aux
!byte 1 ; edge right mask aux
!byte 1 ; left mask aux
!byte 1 ; right mask aux
!byte 1 ; current page
!byte SWITCH_TO_MAIN_E-SWITCH_TO_MAIN
!byte SWITCH_TO_AUX_E-SWITCH_TO_AUX
!byte INX_AND_RECALC_E-INX_AND_RECALC
!byte RECALC_E-RECALC
!byte SET_ROW_COUNT_E-SET_ROW_COUNT
!byte SET_FIRST_ROW_E-SET_FIRST_ROW
!byte INY1_E-INY1
!byte DEY1_E-DEY1
!byte SAVE_Y_E-SAVE_Y
!byte RESTORE_Y_E-RESTORE_Y
!byte MIDDLE_JSR_E-MIDDLE_JSR
!byte OUTER_JSR_E-OUTER_JSR
!byte MIDDLE_BRANCH_E-MIDDLE_BRANCH
!byte OUTER_BRANCH_E-OUTER_BRANCH
!byte $FF ; negative length -> do special bitcopy logic during codegen
!byte MASKCOPY_PRE_E-MASKCOPY_PRE
!byte MASKCOPY_POST_E-MASKCOPY_POST
!byte BYTECOPY_E-BYTECOPY
codegen_pieces ; address of each of the pieces (on zero page, so 1 byte)
!byte <RTS0
!byte <EDGE_LEFT_MASK_MAIN
!byte <EDGE_RIGHT_MASK_MAIN
!byte <LEFT_MASK_MAIN
!byte <RIGHT_MASK_MAIN
!byte <EDGE_LEFT_MASK_AUX
!byte <EDGE_RIGHT_MASK_AUX
!byte <LEFT_MASK_AUX
!byte <RIGHT_MASK_AUX
;
!byte <codegen_dst ; current page
!byte <SWITCH_TO_MAIN
!byte <SWITCH_TO_AUX
!byte <SWITCH_TO_AUX_AND_BYTE_COPY
!byte <INX_AND_RECALC
!byte <RECALC
!byte <SET_ROW_COUNT
!byte <SET_FIRST_ROW
!byte <INY2
!byte <INY1
!byte <DEY1
!byte <SAVE_Y
@ -341,18 +304,61 @@ codegen_pieces ; address of each of the pieces (on zero pa
!byte <OUTER_JSR
!byte <MIDDLE_BRANCH
!byte <OUTER_BRANCH
!byte 0 ; bitcopy pseudo-opcode has no piece of its own
!byte <MASKCOPY_PRE
!byte <MASKCOPY_POST
!byte <BYTECOPY
!byte <BYTECOPY_AND_INY
;!byte 0 ; bitcopy pseudo-opcode has no piece of its own
codegen_stage
!byte 27
codegen_maskindex
!byte 0
codegen_piece_lengths ; length of each of the pieces
!byte RTS0_E-RTS0
; these 8 lengths are never used so we stuff 8 bytes of unrelated data here
;!byte 1 ; edge left mask main
;!byte 1 ; edge right mask main
;!byte 1 ; left mask main
;!byte 1 ; right mask main
;!byte 1 ; edge left mask aux
;!byte 1 ; edge right mask aux
;!byte 1 ; left mask aux
;!byte 1 ; right mask aux
;
MASKCOPY_POST
eor (dst), y
sta (dst), y
MASKCOPY_POST_E
;
MIDDLE_JSR
!byte $20,$47
MIDDLE_JSR_E
OUTER_JSR
!byte $20,$48
OUTER_JSR_E
;
!byte 1 ; current page
!byte SWITCH_TO_MAIN_E-SWITCH_TO_MAIN
!byte SWITCH_TO_AUX_E-SWITCH_TO_AUX
!byte SWITCH_TO_AUX_AND_BYTE_COPY_E-SWITCH_TO_AUX_AND_BYTE_COPY
!byte INX_AND_RECALC_E-INX_AND_RECALC
!byte RECALC_E-RECALC
!byte SET_ROW_COUNT_E-SET_ROW_COUNT
!byte SET_FIRST_ROW_E-SET_FIRST_ROW
!byte INY2_E-INY2
!byte INY1_E-INY1
!byte DEY1_E-DEY1
!byte SAVE_Y_E-SAVE_Y
!byte RESTORE_Y_E-RESTORE_Y
!byte MIDDLE_JSR_E-MIDDLE_JSR
!byte OUTER_JSR_E-OUTER_JSR
!byte MIDDLE_BRANCH_E-MIDDLE_BRANCH
!byte OUTER_BRANCH_E-OUTER_BRANCH
!byte MASKCOPY_PRE_E-MASKCOPY_PRE
!byte MASKCOPY_POST_E-MASKCOPY_POST
!byte BYTECOPY_E-BYTECOPY
!byte BYTECOPY_AND_INY_E-BYTECOPY_AND_INY
;!byte $FF ; negative length -> do special bitcopy logic during codegen
BuildDrawingRoutineFrom
sta <codegen_token_src
sta <codegen_token_src ; STA opcode ($85) also serves as 'length' of k_bitcopy token
BuildDrawingRoutine
ldy #0
sty <codegen_token_x
@ -379,22 +385,25 @@ ProcessBitcopyToken
bitcopy_mask=*+1
lda $FD ; SMC
beq ExitProcessToken ; copymask=0 -> nothing to generate
bmi + ; copymask>$80 -> assume full byte
bmi + ; copymask>=$80 -> assume full byte
lda #k_mask_copy_pre
jsr ProcessToken
lda #1
sta <piece_length
lda <bitcopy_mask
jsr ProcessToken
jsr ProcessMaskToken
lda #k_mask_copy_post
+HIDE_NEXT_2_BYTES
+ lda #k_byte_copy
; execution falls through here
ProcessToken
tax
lda <codegen_piece_lengths, x
bmi ProcessBitcopyToken ; only bitcopy has length>$80
bmi ProcessBitcopyToken ; only bitcopy has length>=$80
sta <piece_length
lda <codegen_pieces, x
; execution falls through here
ProcessMaskToken
sta <piece_src
ldx #0
-
@ -411,6 +420,11 @@ piece_length=*+1
ExitProcessToken
rts
codegen_stage
!byte 27
codegen_maskindex
!byte 0
CopyAuxDHGRToMain
; X=0
sta $C003 ; copy $4000-5FFF/aux to $9000-AFFF/main
@ -489,7 +503,7 @@ BuildDrawingRoutines
; copy codegen data to zero page
ldx #0
- lda CODEGEN_COPY_START, x
sta $00, x
sta $09, x
inx
bne -
;X=0 here
@ -568,8 +582,7 @@ BuildStage1And0
; part of the box (labeled '0' in diagram above).
STAGE0
!byte k_set_first_row
!byte k_iny
!byte k_iny
!byte k_iny2
!byte k_recalc
!byte k_bitcopy, k_left_mask_main
!byte k_switch_to_aux
@ -579,35 +592,28 @@ STAGE0
!byte k_bitcopy, k_left_mask_aux
!byte k_switch_to_aux
!byte k_bitcopy, k_left_mask_aux
!byte k_switch_to_main
!byte k_rts ; also serves as an end-of-template marker
; Template for 'stage 1' routine (copy01), which copies the pixels
; around the innermost box (labeled '1' in diagram above).
STAGE1
!byte k_set_first_row
!byte k_iny
!byte k_iny
!byte k_iny2
!byte k_recalc
!byte k_byte_copy
!byte k_switch_to_aux
!byte k_byte_copy
!byte k_switch_to_aux_and_byte_copy
!byte k_switch_to_main
!byte k_inx_and_recalc
!byte k_byte_copy
!byte k_switch_to_aux
!byte k_byte_copy
!byte k_switch_to_aux_and_byte_copy
!byte k_switch_to_main
!byte k_inx_and_recalc
!byte k_byte_copy
!byte k_switch_to_aux
!byte k_byte_copy
!byte k_switch_to_aux_and_byte_copy
!byte k_switch_to_main
!byte k_inx_and_recalc
!byte k_byte_copy
!byte k_switch_to_aux
!byte k_byte_copy
!byte k_switch_to_main
!byte k_switch_to_aux_and_byte_copy
!byte k_rts ; also serves as an end-of-template marker
; Template for stages 2-8 (copy02..copy08)
@ -620,8 +626,7 @@ MIDDLE_STAGE
;-
!byte k_inx_and_recalc
!byte k_bitcopy, k_left_mask_main
!byte k_iny
!byte k_iny
!byte k_iny2
!byte k_bitcopy, k_right_mask_main
!byte k_switch_to_aux
!byte k_bitcopy, k_right_mask_aux
@ -633,8 +638,7 @@ MIDDLE_STAGE
!byte k_inx_and_recalc
!byte k_bitcopy, k_edge_left_mask_main
!byte k_iny
!byte k_byte_copy
!byte k_iny
!byte k_byte_copy_and_iny
!byte k_bitcopy, k_edge_right_mask_main
!byte k_switch_to_aux
!byte k_bitcopy, k_edge_right_mask_aux
@ -642,7 +646,6 @@ MIDDLE_STAGE
!byte k_byte_copy
!byte k_dey
!byte k_bitcopy, k_edge_left_mask_aux
!byte k_switch_to_main
!byte k_rts ; also serves as an end-of-template marker
; Template for stages 9-15 (copy09..copy0F)
@ -654,10 +657,8 @@ OUTER_STAGE
;-
!byte k_inx_and_recalc
!byte k_bitcopy, k_left_mask_main
!byte k_iny
!byte k_iny
!byte k_iny
!byte k_iny
!byte k_iny2
!byte k_iny2
!byte k_bitcopy, k_right_mask_main
!byte k_switch_to_aux
!byte k_bitcopy, k_right_mask_aux
@ -669,12 +670,9 @@ OUTER_STAGE
!byte k_inx_and_recalc
!byte k_bitcopy, k_edge_left_mask_main
!byte k_iny
!byte k_byte_copy
!byte k_iny
!byte k_byte_copy
!byte k_iny
!byte k_byte_copy
!byte k_iny
!byte k_byte_copy_and_iny
!byte k_byte_copy_and_iny
!byte k_byte_copy_and_iny
!byte k_bitcopy, k_edge_right_mask_main
!byte k_switch_to_aux
!byte k_bitcopy, k_edge_right_mask_aux
@ -686,7 +684,6 @@ OUTER_STAGE
!byte k_byte_copy
!byte k_dey
!byte k_bitcopy, k_edge_left_mask_aux
!byte k_switch_to_main
!byte k_rts ; also serves as an end-of-template marker
!if >* != >STAGE0 {
!error "Templates are not all on same page"