Home » Archimedes archive » Acorn Computing » 1993 06 Mega Disk.adf » 93_06 » Miscellany/SolidDrag/!SolidDrag/Source/drag_src2
Miscellany/SolidDrag/!SolidDrag/Source/drag_src2
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Archimedes archive » Acorn Computing » 1993 06 Mega Disk.adf » 93_06 |
| Filename: | Miscellany/SolidDrag/!SolidDrag/Source/drag_src2 |
| Read OK: | ✔ |
| File size: | 1623 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
; > drag_src
r0 RN 0
r1 RN 1
r2 RN 2
r3 RN 3
r4 RN 4
r5 RN 5
r6 RN 6
r7 RN 7
r8 RN 8
r9 RN 9
r10 RN 10
r11 RN 11
r12 RN 12
sp RN 13
lr RN 14
pc RN 15
Wimp_DragBox EQU &400D0
XWimp_GetPointerInfo EQU &600CF
XWimp_GetIconState EQU &600CE
XDragASprite_Start EQU &62400
XDragASprite_Stop EQU &62401
XOS_AddCallBack EQU &20054
V_FLAG EQU 1:SHL:28
module_base
DCD 0
DCD initialise - module_base
DCD finalise - module_base
DCD 0
DCD title_string - module_base
DCD help_string - module_base
DCD 0
; ---------------------------------------------------------------------------------------------------------
initialise
STMFD sp!, {lr}
BL claim_swi_vector
LDMFD sp!, {pc}
; ---------------------------------------------------------------------------------------------------------
finalise
STMFD sp!, {lr}
BL release_swi_vector
LDMFD sp!, {pc}^
; ---------------------------------------------------------------------------------------------------------
title_string
DCB "AutoDrag",0
help_string
DCB "AutoDrag ",9,"0.10 (09 Sep 1992)",0
ALIGN
; ---------------------------------------------------------------------------------------------------------
release_swi_vector
MOV r0, #8
LDR r1, [r0]
LDR r2, new_branch ; check that our SWI decoder hasn't been replaced
CMP r1, r2
LDREQ r1, old_branch ; replace original decoder if it hasn't
STREQ r1, [r0]
MOVEQ r0, #0
STREQ r1, old_branch
MOVEQS pc, lr
ADR r0, error_block ; otherwise return an error
ORRS pc, lr, #V_FLAG
error_block DCD &103
DCB "Can't detach SWI handler", 0
ALIGN
; ---------------------------------------------------------------------------------------------------------
claim_swi_vector
MOV r0, #8
LDR r0, [r0] ; get branch to SWI handler
STR r0, old_branch
ADR r1, second_branch-8 ; insert in our own code
SUB r0, r0, r1, LSR #2
STR r0, second_branch
ADD r0, r0, #(second_branch-first_branch) / 4
SUB r0, r0, #&D0000000
STR r0, first_branch ; convert to a BNE
MOV r1, #8
ADR r0, swi_patch-8-8
MOV r0, r0, LSR #2
ADD r0, r0, #&EA000000
STR r0, [r1]
STR r0, new_branch ; put in a branch to our code
MOV pc, lr
; ---------------------------------------------------------------------------------------------------------
swi_patch
STMFD sp!,{lr}
BIC lr, lr, #&FC000003
LDR lr, [lr,#-4] ; get SWI instruction
BIC lr, lr, #&FF000000
BIC lr, lr, #&20000
SUB lr, lr, #&40000
CMP lr, #&D0 ; is it Wimp_DragBox ?
LDMNEFD sp!, {lr} ; otherwise drop through to SWI handler
first_branch
DCD 0
LDR lr, [r1,#4] ; get drag type
CMP lr, #5
BNE continue ; check it's the right sort of drag
STMFD sp!,{r0,r1}
ADR r0, callback_code ; value in r1 appears in r12 in CallBack routine
SWI XOS_AddCallBack
LDMFD sp!,{r0,r1,pc}^
MOVS pc, lr
continue
LDMFD sp!, {lr} ; call Wimp_DragBox as usual
second_branch
DCD 0
sprite_name
DCB "!edit",0
ALIGN
workspace
% 256
callback_code
STMFD sp!,{r0-r4,lr}
ADR r1, workspace
SWI XWimp_GetPointerInfo
ADD r1, r1, #12
SWI XWimp_GetIconState ; get data block for icon under the pointer
LDR r3, [r1, #24]
TST r3, #2 ; if it's not a sprite then do nothing
BEQ not_sprite
TST r3, #256 ; is it indirected ?
BNE indirected
ADD r2, r1, #28 ; sprite name directly specified
MOV r1, #1
B do_drag
indirected
TST r3, #1
BNE text_and_sprite
LDR r3, [r1, #36] ; get indirected sprite name length
LDR r2, [r1, #28]
LDR r1, [r1, #32]
CMP r3, #0 ; if length = 0 then r2 points to start of sprite
ADDEQ r2, r2, #4
B do_drag
text_and_sprite
LDR r2, [r1, #32]
find_start
LDRB r3, [r2], #1
CMP r3, #'S'
CMPNE r3, #'s'
BNE find_start
MOV r1, #1
do_drag
MOV r0, #128+64+32+4+1
ADD r3, r12, #8
ADD r4, r12, #24
SWI XDragASprite_Start
not_sprite
LDMFD sp!,{r0-r4,pc}^
; ---------------------------------------------------------------------------------------------------------
lr_store DCD 0 ; register storage for SWI decoder
old_branch DCD 0 ; branch to original SWI decoder
new_branch DCD 0 ; branch to our new SWI decoder
END
00000000 3b 20 3e 20 64 72 61 67 5f 73 72 63 0a 72 30 20 |; > drag_src.r0 |
00000010 52 4e 20 30 0a 72 31 20 52 4e 20 31 0a 72 32 20 |RN 0.r1 RN 1.r2 |
00000020 52 4e 20 32 0a 72 33 20 52 4e 20 33 0a 72 34 20 |RN 2.r3 RN 3.r4 |
00000030 52 4e 20 34 0a 72 35 20 52 4e 20 35 0a 72 36 20 |RN 4.r5 RN 5.r6 |
00000040 52 4e 20 36 0a 72 37 20 52 4e 20 37 0a 72 38 20 |RN 6.r7 RN 7.r8 |
00000050 52 4e 20 38 0a 72 39 20 52 4e 20 39 0a 72 31 30 |RN 8.r9 RN 9.r10|
00000060 20 52 4e 20 31 30 0a 72 31 31 20 52 4e 20 31 31 | RN 10.r11 RN 11|
00000070 0a 72 31 32 20 52 4e 20 31 32 0a 73 70 20 52 4e |.r12 RN 12.sp RN|
00000080 20 31 33 0a 6c 72 20 52 4e 20 31 34 0a 70 63 20 | 13.lr RN 14.pc |
00000090 52 4e 20 31 35 0a 0a 57 69 6d 70 5f 44 72 61 67 |RN 15..Wimp_Drag|
000000a0 42 6f 78 20 20 20 20 20 20 20 20 20 20 20 20 45 |Box E|
000000b0 51 55 20 26 34 30 30 44 30 0a 58 57 69 6d 70 5f |QU &400D0.XWimp_|
000000c0 47 65 74 50 6f 69 6e 74 65 72 49 6e 66 6f 20 20 |GetPointerInfo |
000000d0 20 20 45 51 55 20 26 36 30 30 43 46 0a 58 57 69 | EQU &600CF.XWi|
000000e0 6d 70 5f 47 65 74 49 63 6f 6e 53 74 61 74 65 20 |mp_GetIconState |
000000f0 20 20 20 20 20 45 51 55 20 26 36 30 30 43 45 0a | EQU &600CE.|
00000100 58 44 72 61 67 41 53 70 72 69 74 65 5f 53 74 61 |XDragASprite_Sta|
00000110 72 74 20 20 20 20 20 20 45 51 55 20 26 36 32 34 |rt EQU &624|
00000120 30 30 0a 58 44 72 61 67 41 53 70 72 69 74 65 5f |00.XDragASprite_|
00000130 53 74 6f 70 20 20 20 20 20 20 20 45 51 55 20 26 |Stop EQU &|
00000140 36 32 34 30 31 0a 58 4f 53 5f 41 64 64 43 61 6c |62401.XOS_AddCal|
00000150 6c 42 61 63 6b 20 20 20 20 20 20 20 20 20 45 51 |lBack EQ|
00000160 55 20 26 32 30 30 35 34 0a 56 5f 46 4c 41 47 20 |U &20054.V_FLAG |
00000170 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00000180 20 45 51 55 20 31 3a 53 48 4c 3a 32 38 0a 0a 6d | EQU 1:SHL:28..m|
00000190 6f 64 75 6c 65 5f 62 61 73 65 0a 20 20 20 20 20 |odule_base. |
000001a0 20 20 20 44 43 44 20 20 20 20 20 30 0a 20 20 20 | DCD 0. |
000001b0 20 20 20 20 20 44 43 44 20 20 20 20 20 69 6e 69 | DCD ini|
000001c0 74 69 61 6c 69 73 65 20 2d 20 6d 6f 64 75 6c 65 |tialise - module|
000001d0 5f 62 61 73 65 0a 20 20 20 20 20 20 20 20 44 43 |_base. DC|
000001e0 44 20 20 20 20 20 66 69 6e 61 6c 69 73 65 20 2d |D finalise -|
000001f0 20 6d 6f 64 75 6c 65 5f 62 61 73 65 0a 20 20 20 | module_base. |
00000200 20 20 20 20 20 44 43 44 20 20 20 20 20 30 0a 20 | DCD 0. |
00000210 20 20 20 20 20 20 20 44 43 44 20 20 20 20 20 74 | DCD t|
00000220 69 74 6c 65 5f 73 74 72 69 6e 67 20 2d 20 6d 6f |itle_string - mo|
00000230 64 75 6c 65 5f 62 61 73 65 0a 20 20 20 20 20 20 |dule_base. |
00000240 20 20 44 43 44 20 20 20 20 20 68 65 6c 70 5f 73 | DCD help_s|
00000250 74 72 69 6e 67 20 2d 20 6d 6f 64 75 6c 65 5f 62 |tring - module_b|
00000260 61 73 65 0a 20 20 20 20 20 20 20 20 44 43 44 20 |ase. DCD |
00000270 20 20 20 20 30 0a 0a 0a 3b 20 2d 2d 2d 2d 2d 2d | 0...; ------|
00000280 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
000002e0 2d 2d 2d 0a 0a 69 6e 69 74 69 61 6c 69 73 65 0a |---..initialise.|
000002f0 20 20 20 20 20 20 20 20 53 54 4d 46 44 20 20 20 | STMFD |
00000300 73 70 21 2c 20 7b 6c 72 7d 0a 20 20 20 20 20 20 |sp!, {lr}. |
00000310 20 20 42 4c 20 20 20 20 20 20 63 6c 61 69 6d 5f | BL claim_|
00000320 73 77 69 5f 76 65 63 74 6f 72 0a 20 20 20 20 20 |swi_vector. |
00000330 20 20 20 4c 44 4d 46 44 20 20 20 73 70 21 2c 20 | LDMFD sp!, |
00000340 7b 70 63 7d 0a 0a 3b 20 2d 2d 2d 2d 2d 2d 2d 2d |{pc}..; --------|
00000350 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
000003b0 2d 0a 0a 66 69 6e 61 6c 69 73 65 0a 20 20 20 20 |-..finalise. |
000003c0 20 20 20 20 53 54 4d 46 44 20 20 20 73 70 21 2c | STMFD sp!,|
000003d0 20 7b 6c 72 7d 0a 20 20 20 20 20 20 20 20 42 4c | {lr}. BL|
000003e0 20 20 20 20 20 20 72 65 6c 65 61 73 65 5f 73 77 | release_sw|
000003f0 69 5f 76 65 63 74 6f 72 0a 20 20 20 20 20 20 20 |i_vector. |
00000400 20 4c 44 4d 46 44 20 20 20 73 70 21 2c 20 7b 70 | LDMFD sp!, {p|
00000410 63 7d 5e 0a 0a 3b 20 2d 2d 2d 2d 2d 2d 2d 2d 2d |c}^..; ---------|
00000420 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00000480 0a 0a 74 69 74 6c 65 5f 73 74 72 69 6e 67 0a 20 |..title_string. |
00000490 20 20 20 20 20 20 20 44 43 42 20 20 20 20 20 22 | DCB "|
000004a0 41 75 74 6f 44 72 61 67 22 2c 30 0a 0a 68 65 6c |AutoDrag",0..hel|
000004b0 70 5f 73 74 72 69 6e 67 0a 20 20 20 20 20 20 20 |p_string. |
000004c0 20 44 43 42 20 20 20 20 20 22 41 75 74 6f 44 72 | DCB "AutoDr|
000004d0 61 67 20 22 2c 39 2c 22 30 2e 31 30 20 28 30 39 |ag ",9,"0.10 (09|
000004e0 20 53 65 70 20 31 39 39 32 29 22 2c 30 0a 20 20 | Sep 1992)",0. |
000004f0 20 20 20 20 20 20 41 4c 49 47 4e 0a 0a 3b 20 2d | ALIGN..; -|
00000500 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00000560 2d 2d 2d 2d 2d 2d 2d 2d 0a 0a 72 65 6c 65 61 73 |--------..releas|
00000570 65 5f 73 77 69 5f 76 65 63 74 6f 72 0a 20 20 20 |e_swi_vector. |
00000580 20 20 20 20 20 4d 4f 56 20 20 20 20 20 72 30 2c | MOV r0,|
00000590 20 23 38 0a 20 20 20 20 20 20 20 20 4c 44 52 20 | #8. LDR |
000005a0 20 20 20 20 72 31 2c 20 5b 72 30 5d 0a 20 20 20 | r1, [r0]. |
000005b0 20 20 20 20 20 4c 44 52 20 20 20 20 20 72 32 2c | LDR r2,|
000005c0 20 6e 65 77 5f 62 72 61 6e 63 68 20 20 20 20 20 | new_branch |
000005d0 20 20 20 20 20 20 20 20 20 20 20 20 20 3b 20 63 | ; c|
000005e0 68 65 63 6b 20 74 68 61 74 20 6f 75 72 20 53 57 |heck that our SW|
000005f0 49 20 64 65 63 6f 64 65 72 20 68 61 73 6e 27 74 |I decoder hasn't|
00000600 20 62 65 65 6e 20 72 65 70 6c 61 63 65 64 0a 20 | been replaced. |
00000610 20 20 20 20 20 20 20 43 4d 50 20 20 20 20 20 72 | CMP r|
00000620 31 2c 20 72 32 0a 20 20 20 20 20 20 20 20 4c 44 |1, r2. LD|
00000630 52 45 51 20 20 20 72 31 2c 20 6f 6c 64 5f 62 72 |REQ r1, old_br|
00000640 61 6e 63 68 20 20 20 20 20 20 20 20 20 20 20 20 |anch |
00000650 20 20 20 20 20 20 3b 20 72 65 70 6c 61 63 65 20 | ; replace |
00000660 6f 72 69 67 69 6e 61 6c 20 64 65 63 6f 64 65 72 |original decoder|
00000670 20 69 66 20 69 74 20 68 61 73 6e 27 74 0a 20 20 | if it hasn't. |
00000680 20 20 20 20 20 20 53 54 52 45 51 20 20 20 72 31 | STREQ r1|
00000690 2c 20 5b 72 30 5d 0a 20 20 20 20 20 20 20 20 4d |, [r0]. M|
000006a0 4f 56 45 51 20 20 20 72 30 2c 20 23 30 0a 20 20 |OVEQ r0, #0. |
000006b0 20 20 20 20 20 20 53 54 52 45 51 20 20 20 72 31 | STREQ r1|
000006c0 2c 20 6f 6c 64 5f 62 72 61 6e 63 68 0a 20 20 20 |, old_branch. |
000006d0 20 20 20 20 20 4d 4f 56 45 51 53 20 20 70 63 2c | MOVEQS pc,|
000006e0 20 6c 72 0a 0a 20 20 20 20 20 20 20 20 41 44 52 | lr.. ADR|
000006f0 20 20 20 72 30 2c 20 65 72 72 6f 72 5f 62 6c 6f | r0, error_blo|
00000700 63 6b 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |ck |
00000710 20 20 20 3b 20 6f 74 68 65 72 77 69 73 65 20 72 | ; otherwise r|
00000720 65 74 75 72 6e 20 61 6e 20 65 72 72 6f 72 0a 20 |eturn an error. |
00000730 20 20 20 20 20 20 20 4f 52 52 53 20 20 70 63 2c | ORRS pc,|
00000740 20 6c 72 2c 20 23 56 5f 46 4c 41 47 0a 0a 65 72 | lr, #V_FLAG..er|
00000750 72 6f 72 5f 62 6c 6f 63 6b 20 20 20 20 20 44 43 |ror_block DC|
00000760 44 20 20 20 20 20 26 31 30 33 0a 20 20 20 20 20 |D &103. |
00000770 20 20 20 20 20 20 20 20 20 20 20 44 43 42 20 20 | DCB |
00000780 20 20 20 22 43 61 6e 27 74 20 64 65 74 61 63 68 | "Can't detach|
00000790 20 53 57 49 20 68 61 6e 64 6c 65 72 22 2c 20 30 | SWI handler", 0|
000007a0 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |. |
000007b0 20 41 4c 49 47 4e 0a 0a 3b 20 2d 2d 2d 2d 2d 2d | ALIGN..; ------|
000007c0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00000820 2d 2d 2d 0a 0a 63 6c 61 69 6d 5f 73 77 69 5f 76 |---..claim_swi_v|
00000830 65 63 74 6f 72 0a 20 20 20 20 20 20 20 20 4d 4f |ector. MO|
00000840 56 20 20 20 20 20 72 30 2c 20 23 38 0a 20 20 20 |V r0, #8. |
00000850 20 20 20 20 20 4c 44 52 20 20 20 20 20 72 30 2c | LDR r0,|
00000860 20 5b 72 30 5d 20 20 20 20 20 20 20 20 20 20 20 | [r0] |
00000870 20 20 20 20 20 20 20 20 20 20 20 20 20 3b 20 67 | ; g|
00000880 65 74 20 62 72 61 6e 63 68 20 74 6f 20 53 57 49 |et branch to SWI|
00000890 20 68 61 6e 64 6c 65 72 0a 20 20 20 20 20 20 20 | handler. |
000008a0 20 53 54 52 20 20 20 20 20 72 30 2c 20 6f 6c 64 | STR r0, old|
000008b0 5f 62 72 61 6e 63 68 0a 0a 20 20 20 20 20 20 20 |_branch.. |
000008c0 20 41 44 52 20 20 20 20 20 72 31 2c 20 73 65 63 | ADR r1, sec|
000008d0 6f 6e 64 5f 62 72 61 6e 63 68 2d 38 20 20 20 20 |ond_branch-8 |
000008e0 20 20 20 20 20 20 20 20 20 3b 20 69 6e 73 65 72 | ; inser|
000008f0 74 20 69 6e 20 6f 75 72 20 6f 77 6e 20 63 6f 64 |t in our own cod|
00000900 65 0a 20 20 20 20 20 20 20 20 53 55 42 20 20 20 |e. SUB |
00000910 20 20 72 30 2c 20 72 30 2c 20 72 31 2c 20 4c 53 | r0, r0, r1, LS|
00000920 52 20 23 32 0a 20 20 20 20 20 20 20 20 53 54 52 |R #2. STR|
00000930 20 20 20 20 20 72 30 2c 20 73 65 63 6f 6e 64 5f | r0, second_|
00000940 62 72 61 6e 63 68 0a 0a 20 20 20 20 20 20 20 20 |branch.. |
00000950 41 44 44 20 20 20 20 20 72 30 2c 20 72 30 2c 20 |ADD r0, r0, |
00000960 23 28 73 65 63 6f 6e 64 5f 62 72 61 6e 63 68 2d |#(second_branch-|
00000970 66 69 72 73 74 5f 62 72 61 6e 63 68 29 20 2f 20 |first_branch) / |
00000980 34 0a 20 20 20 20 20 20 20 20 53 55 42 20 20 20 |4. SUB |
00000990 20 20 72 30 2c 20 72 30 2c 20 23 26 44 30 30 30 | r0, r0, #&D000|
000009a0 30 30 30 30 0a 20 20 20 20 20 20 20 20 53 54 52 |0000. STR|
000009b0 20 20 20 20 20 72 30 2c 20 66 69 72 73 74 5f 62 | r0, first_b|
000009c0 72 61 6e 63 68 20 20 20 20 20 20 20 20 20 20 20 |ranch |
000009d0 20 20 20 20 20 3b 20 63 6f 6e 76 65 72 74 20 74 | ; convert t|
000009e0 6f 20 61 20 42 4e 45 0a 0a 20 20 20 20 20 20 20 |o a BNE.. |
000009f0 20 4d 4f 56 20 20 20 20 20 72 31 2c 20 23 38 0a | MOV r1, #8.|
00000a00 20 20 20 20 20 20 20 20 41 44 52 20 20 20 20 20 | ADR |
00000a10 72 30 2c 20 73 77 69 5f 70 61 74 63 68 2d 38 2d |r0, swi_patch-8-|
00000a20 38 0a 20 20 20 20 20 20 20 20 4d 4f 56 20 20 20 |8. MOV |
00000a30 20 20 72 30 2c 20 72 30 2c 20 4c 53 52 20 23 32 | r0, r0, LSR #2|
00000a40 0a 20 20 20 20 20 20 20 20 41 44 44 20 20 20 20 |. ADD |
00000a50 20 72 30 2c 20 72 30 2c 20 23 26 45 41 30 30 30 | r0, r0, #&EA000|
00000a60 30 30 30 0a 20 20 20 20 20 20 20 20 53 54 52 20 |000. STR |
00000a70 20 20 20 20 72 30 2c 20 5b 72 31 5d 0a 20 20 20 | r0, [r1]. |
00000a80 20 20 20 20 20 53 54 52 20 20 20 20 20 72 30 2c | STR r0,|
00000a90 20 6e 65 77 5f 62 72 61 6e 63 68 20 20 20 20 20 | new_branch |
00000aa0 20 20 20 20 20 20 20 20 20 20 20 20 20 3b 20 70 | ; p|
00000ab0 75 74 20 69 6e 20 61 20 62 72 61 6e 63 68 20 74 |ut in a branch t|
00000ac0 6f 20 6f 75 72 20 63 6f 64 65 0a 0a 20 20 20 20 |o our code.. |
00000ad0 20 20 20 20 4d 4f 56 20 20 20 20 20 70 63 2c 20 | MOV pc, |
00000ae0 6c 72 0a 0a 3b 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |lr..; ----------|
00000af0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00000b40 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a |---------------.|
00000b50 0a 73 77 69 5f 70 61 74 63 68 0a 20 20 20 20 20 |.swi_patch. |
00000b60 20 20 20 53 54 4d 46 44 20 20 20 73 70 21 2c 7b | STMFD sp!,{|
00000b70 6c 72 7d 0a 20 20 20 20 20 20 20 20 42 49 43 20 |lr}. BIC |
00000b80 20 20 20 20 6c 72 2c 20 6c 72 2c 20 23 26 46 43 | lr, lr, #&FC|
00000b90 30 30 30 30 30 33 0a 20 20 20 20 20 20 20 20 4c |000003. L|
00000ba0 44 52 20 20 20 20 20 6c 72 2c 20 5b 6c 72 2c 23 |DR lr, [lr,#|
00000bb0 2d 34 5d 20 20 20 20 20 20 20 20 20 20 20 20 20 |-4] |
00000bc0 20 20 20 20 20 20 20 3b 20 67 65 74 20 53 57 49 | ; get SWI|
00000bd0 20 69 6e 73 74 72 75 63 74 69 6f 6e 0a 0a 20 20 | instruction.. |
00000be0 20 20 20 20 20 20 42 49 43 20 20 20 20 20 6c 72 | BIC lr|
00000bf0 2c 20 6c 72 2c 20 23 26 46 46 30 30 30 30 30 30 |, lr, #&FF000000|
00000c00 0a 20 20 20 20 20 20 20 20 42 49 43 20 20 20 20 |. BIC |
00000c10 20 6c 72 2c 20 6c 72 2c 20 23 26 32 30 30 30 30 | lr, lr, #&20000|
00000c20 0a 20 20 20 20 20 20 20 20 53 55 42 20 20 20 20 |. SUB |
00000c30 20 6c 72 2c 20 6c 72 2c 20 23 26 34 30 30 30 30 | lr, lr, #&40000|
00000c40 0a 20 20 20 20 20 20 20 20 43 4d 50 20 20 20 20 |. CMP |
00000c50 20 6c 72 2c 20 23 26 44 30 20 20 20 20 20 20 20 | lr, #&D0 |
00000c60 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00000c70 20 3b 20 69 73 20 69 74 20 57 69 6d 70 5f 44 72 | ; is it Wimp_Dr|
00000c80 61 67 42 6f 78 20 3f 0a 0a 20 20 20 20 20 20 20 |agBox ?.. |
00000c90 20 4c 44 4d 4e 45 46 44 20 73 70 21 2c 20 7b 6c | LDMNEFD sp!, {l|
00000ca0 72 7d 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |r} |
00000cb0 20 20 20 20 20 20 20 20 20 3b 20 6f 74 68 65 72 | ; other|
00000cc0 77 69 73 65 20 64 72 6f 70 20 74 68 72 6f 75 67 |wise drop throug|
00000cd0 68 20 74 6f 20 53 57 49 20 68 61 6e 64 6c 65 72 |h to SWI handler|
00000ce0 0a 66 69 72 73 74 5f 62 72 61 6e 63 68 0a 20 20 |.first_branch. |
00000cf0 20 20 20 20 20 20 44 43 44 20 20 20 20 20 30 0a | DCD 0.|
00000d00 0a 20 20 20 20 20 20 20 20 4c 44 52 20 20 20 20 |. LDR |
00000d10 20 6c 72 2c 20 5b 72 31 2c 23 34 5d 20 20 20 20 | lr, [r1,#4] |
00000d20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00000d30 20 3b 20 67 65 74 20 64 72 61 67 20 74 79 70 65 | ; get drag type|
00000d40 0a 20 20 20 20 20 20 20 20 43 4d 50 20 20 20 20 |. CMP |
00000d50 20 6c 72 2c 20 23 35 0a 20 20 20 20 20 20 20 20 | lr, #5. |
00000d60 42 4e 45 20 20 20 20 20 63 6f 6e 74 69 6e 75 65 |BNE continue|
00000d70 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00000d80 20 20 20 20 20 20 20 20 3b 20 63 68 65 63 6b 20 | ; check |
00000d90 69 74 27 73 20 74 68 65 20 72 69 67 68 74 20 73 |it's the right s|
00000da0 6f 72 74 20 6f 66 20 64 72 61 67 0a 0a 20 20 20 |ort of drag.. |
00000db0 20 20 20 20 20 53 54 4d 46 44 20 20 20 73 70 21 | STMFD sp!|
00000dc0 2c 7b 72 30 2c 72 31 7d 0a 20 20 20 20 20 20 20 |,{r0,r1}. |
00000dd0 20 41 44 52 20 20 20 20 20 72 30 2c 20 63 61 6c | ADR r0, cal|
00000de0 6c 62 61 63 6b 5f 63 6f 64 65 20 20 20 20 20 20 |lback_code |
00000df0 20 20 20 20 20 20 20 20 20 3b 20 76 61 6c 75 65 | ; value|
00000e00 20 69 6e 20 72 31 20 61 70 70 65 61 72 73 20 69 | in r1 appears i|
00000e10 6e 20 72 31 32 20 69 6e 20 43 61 6c 6c 42 61 63 |n r12 in CallBac|
00000e20 6b 20 72 6f 75 74 69 6e 65 0a 20 20 20 20 20 20 |k routine. |
00000e30 20 20 53 57 49 20 20 20 20 20 58 4f 53 5f 41 64 | SWI XOS_Ad|
00000e40 64 43 61 6c 6c 42 61 63 6b 0a 20 20 20 20 20 20 |dCallBack. |
00000e50 20 20 4c 44 4d 46 44 20 20 20 73 70 21 2c 7b 72 | LDMFD sp!,{r|
00000e60 30 2c 72 31 2c 70 63 7d 5e 0a 20 20 20 20 20 20 |0,r1,pc}^. |
00000e70 20 20 0a 20 20 20 20 20 20 20 20 4d 4f 56 53 20 | . MOVS |
00000e80 20 20 20 70 63 2c 20 6c 72 0a 0a 63 6f 6e 74 69 | pc, lr..conti|
00000e90 6e 75 65 0a 20 20 20 20 20 20 20 20 4c 44 4d 46 |nue. LDMF|
00000ea0 44 20 73 70 21 2c 20 7b 6c 72 7d 20 20 20 20 20 |D sp!, {lr} |
00000eb0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00000ec0 20 20 20 20 3b 20 63 61 6c 6c 20 57 69 6d 70 5f | ; call Wimp_|
00000ed0 44 72 61 67 42 6f 78 20 61 73 20 75 73 75 61 6c |DragBox as usual|
00000ee0 0a 73 65 63 6f 6e 64 5f 62 72 61 6e 63 68 0a 20 |.second_branch. |
00000ef0 20 20 20 20 20 20 20 44 43 44 20 20 20 20 20 30 | DCD 0|
00000f00 0a 0a 73 70 72 69 74 65 5f 6e 61 6d 65 0a 20 20 |..sprite_name. |
00000f10 20 20 20 20 20 20 44 43 42 20 20 20 20 20 22 21 | DCB "!|
00000f20 65 64 69 74 22 2c 30 0a 20 20 20 20 20 20 20 20 |edit",0. |
00000f30 41 4c 49 47 4e 0a 0a 77 6f 72 6b 73 70 61 63 65 |ALIGN..workspace|
00000f40 0a 20 20 20 20 20 20 20 20 25 20 20 20 20 20 20 |. % |
00000f50 20 32 35 36 0a 0a 0a 63 61 6c 6c 62 61 63 6b 5f | 256...callback_|
00000f60 63 6f 64 65 0a 20 20 20 20 20 20 20 20 53 54 4d |code. STM|
00000f70 46 44 20 20 20 73 70 21 2c 7b 72 30 2d 72 34 2c |FD sp!,{r0-r4,|
00000f80 6c 72 7d 0a 20 20 20 20 20 20 20 20 41 44 52 20 |lr}. ADR |
00000f90 20 20 20 20 72 31 2c 20 77 6f 72 6b 73 70 61 63 | r1, workspac|
00000fa0 65 0a 20 20 20 20 20 20 20 20 53 57 49 20 20 20 |e. SWI |
00000fb0 20 20 58 57 69 6d 70 5f 47 65 74 50 6f 69 6e 74 | XWimp_GetPoint|
00000fc0 65 72 49 6e 66 6f 0a 20 20 20 20 20 20 20 20 41 |erInfo. A|
00000fd0 44 44 20 20 20 20 20 72 31 2c 20 72 31 2c 20 23 |DD r1, r1, #|
00000fe0 31 32 0a 20 20 20 20 20 20 20 20 53 57 49 20 20 |12. SWI |
00000ff0 20 20 20 58 57 69 6d 70 5f 47 65 74 49 63 6f 6e | XWimp_GetIcon|
00001000 53 74 61 74 65 20 20 20 20 20 20 20 20 20 20 20 |State |
00001010 20 20 20 3b 20 67 65 74 20 64 61 74 61 20 62 6c | ; get data bl|
00001020 6f 63 6b 20 66 6f 72 20 69 63 6f 6e 20 75 6e 64 |ock for icon und|
00001030 65 72 20 74 68 65 20 70 6f 69 6e 74 65 72 0a 0a |er the pointer..|
00001040 20 20 20 20 20 20 20 20 4c 44 52 20 20 20 20 20 | LDR |
00001050 72 33 2c 20 5b 72 31 2c 20 23 32 34 5d 0a 20 20 |r3, [r1, #24]. |
00001060 20 20 20 20 20 20 54 53 54 20 20 20 20 20 72 33 | TST r3|
00001070 2c 20 23 32 20 20 20 20 20 20 20 20 20 20 20 20 |, #2 |
00001080 20 20 20 20 20 20 20 20 20 20 20 20 20 20 3b 20 | ; |
00001090 69 66 20 69 74 27 73 20 6e 6f 74 20 61 20 73 70 |if it's not a sp|
000010a0 72 69 74 65 20 74 68 65 6e 20 64 6f 20 6e 6f 74 |rite then do not|
000010b0 68 69 6e 67 0a 20 20 20 20 20 20 20 20 42 45 51 |hing. BEQ|
000010c0 20 20 20 20 20 6e 6f 74 5f 73 70 72 69 74 65 0a | not_sprite.|
000010d0 0a 20 20 20 20 20 20 20 20 54 53 54 20 20 20 20 |. TST |
000010e0 20 72 33 2c 20 23 32 35 36 20 20 20 20 20 20 20 | r3, #256 |
000010f0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00001100 20 3b 20 69 73 20 69 74 20 69 6e 64 69 72 65 63 | ; is it indirec|
00001110 74 65 64 20 3f 0a 20 20 20 20 20 20 20 20 42 4e |ted ?. BN|
00001120 45 20 20 20 20 20 69 6e 64 69 72 65 63 74 65 64 |E indirected|
00001130 0a 0a 20 20 20 20 20 20 20 20 41 44 44 20 20 20 |.. ADD |
00001140 20 20 72 32 2c 20 72 31 2c 20 23 32 38 20 20 20 | r2, r1, #28 |
00001150 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00001160 20 20 3b 20 73 70 72 69 74 65 20 6e 61 6d 65 20 | ; sprite name |
00001170 64 69 72 65 63 74 6c 79 20 73 70 65 63 69 66 69 |directly specifi|
00001180 65 64 0a 20 20 20 20 20 20 20 20 4d 4f 56 20 20 |ed. MOV |
00001190 20 20 20 72 31 2c 20 23 31 0a 20 20 20 20 20 20 | r1, #1. |
000011a0 20 20 42 20 20 20 20 20 20 20 64 6f 5f 64 72 61 | B do_dra|
000011b0 67 0a 0a 69 6e 64 69 72 65 63 74 65 64 0a 20 20 |g..indirected. |
000011c0 20 20 20 20 20 20 54 53 54 20 20 20 20 20 72 33 | TST r3|
000011d0 2c 20 23 31 0a 20 20 20 20 20 20 20 20 42 4e 45 |, #1. BNE|
000011e0 20 20 20 20 20 74 65 78 74 5f 61 6e 64 5f 73 70 | text_and_sp|
000011f0 72 69 74 65 0a 20 20 20 20 20 20 20 20 4c 44 52 |rite. LDR|
00001200 20 20 20 20 20 72 33 2c 20 5b 72 31 2c 20 23 33 | r3, [r1, #3|
00001210 36 5d 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |6] |
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00001230 65 63 74 65 64 20 73 70 72 69 74 65 20 6e 61 6d |ected sprite nam|
00001240 65 20 6c 65 6e 67 74 68 0a 20 20 20 20 20 20 20 |e length. |
00001250 20 4c 44 52 20 20 20 20 20 72 32 2c 20 5b 72 31 | LDR r2, [r1|
00001260 2c 20 23 32 38 5d 0a 20 20 20 20 20 20 20 20 4c |, #28]. L|
00001270 44 52 20 20 20 20 20 72 31 2c 20 5b 72 31 2c 20 |DR r1, [r1, |
00001280 23 33 32 5d 0a 0a 20 20 20 20 20 20 20 20 43 4d |#32].. CM|
00001290 50 20 20 20 20 20 72 33 2c 20 23 30 20 20 20 20 |P r3, #0 |
000012a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
000012b0 20 20 20 20 20 20 3b 20 69 66 20 6c 65 6e 67 74 | ; if lengt|
000012c0 68 20 3d 20 30 20 74 68 65 6e 20 72 32 20 70 6f |h = 0 then r2 po|
000012d0 69 6e 74 73 20 74 6f 20 73 74 61 72 74 20 6f 66 |ints to start of|
000012e0 20 73 70 72 69 74 65 0a 20 20 20 20 20 20 20 20 | sprite. |
000012f0 41 44 44 45 51 20 20 20 72 32 2c 20 72 32 2c 20 |ADDEQ r2, r2, |
00001300 23 34 0a 20 20 20 20 20 20 20 20 42 20 20 20 20 |#4. B |
00001310 20 20 20 64 6f 5f 64 72 61 67 0a 0a 74 65 78 74 | do_drag..text|
00001320 5f 61 6e 64 5f 73 70 72 69 74 65 0a 20 20 20 20 |_and_sprite. |
00001330 20 20 20 20 4c 44 52 20 20 20 20 20 72 32 2c 20 | LDR r2, |
00001340 5b 72 31 2c 20 23 33 32 5d 0a 20 20 20 20 20 20 |[r1, #32]. |
00001350 20 20 0a 66 69 6e 64 5f 73 74 61 72 74 0a 20 20 | .find_start. |
00001360 20 20 20 20 20 20 4c 44 52 42 20 20 20 20 72 33 | LDRB r3|
00001370 2c 20 5b 72 32 5d 2c 20 23 31 0a 20 20 20 20 20 |, [r2], #1. |
00001380 20 20 20 43 4d 50 20 20 20 20 20 72 33 2c 20 23 | CMP r3, #|
00001390 27 53 27 0a 20 20 20 20 20 20 20 20 43 4d 50 4e |'S'. CMPN|
000013a0 45 20 20 20 72 33 2c 20 23 27 73 27 0a 20 20 20 |E r3, #'s'. |
000013b0 20 20 20 20 20 42 4e 45 20 20 20 20 20 66 69 6e | BNE fin|
000013c0 64 5f 73 74 61 72 74 0a 20 20 20 20 20 20 20 20 |d_start. |
000013d0 4d 4f 56 20 20 20 20 20 72 31 2c 20 23 31 0a 0a |MOV r1, #1..|
000013e0 64 6f 5f 64 72 61 67 0a 20 20 20 20 20 20 20 20 |do_drag. |
000013f0 4d 4f 56 20 20 20 20 20 72 30 2c 20 23 31 32 38 |MOV r0, #128|
00001400 2b 36 34 2b 33 32 2b 34 2b 31 0a 20 20 20 20 20 |+64+32+4+1. |
00001410 20 20 20 41 44 44 20 20 20 20 20 72 33 2c 20 72 | ADD r3, r|
00001420 31 32 2c 20 23 38 0a 20 20 20 20 20 20 20 20 41 |12, #8. A|
00001430 44 44 20 20 20 20 20 72 34 2c 20 72 31 32 2c 20 |DD r4, r12, |
00001440 23 32 34 20 20 20 20 20 20 20 20 0a 20 20 20 20 |#24 . |
00001450 20 20 20 20 53 57 49 20 20 20 20 20 58 44 72 61 | SWI XDra|
00001460 67 41 53 70 72 69 74 65 5f 53 74 61 72 74 0a 6e |gASprite_Start.n|
00001470 6f 74 5f 73 70 72 69 74 65 0a 20 20 20 20 20 20 |ot_sprite. |
00001480 20 20 4c 44 4d 46 44 20 20 20 73 70 21 2c 7b 72 | LDMFD sp!,{r|
00001490 30 2d 72 34 2c 70 63 7d 5e 0a 0a 3b 20 2d 2d 2d |0-r4,pc}^..; ---|
000014a0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00001500 2d 2d 2d 2d 2d 2d 0a 0a 6c 72 5f 73 74 6f 72 65 |------..lr_store|
00001510 20 20 20 20 20 20 20 20 44 43 44 20 20 20 20 20 | DCD |
00001520 30 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |0 |
00001530 20 20 20 20 20 20 20 20 3b 20 72 65 67 69 73 74 | ; regist|
00001540 65 72 20 73 74 6f 72 61 67 65 20 66 6f 72 20 53 |er storage for S|
00001550 57 49 20 64 65 63 6f 64 65 72 0a 6f 6c 64 5f 62 |WI decoder.old_b|
00001560 72 61 6e 63 68 20 20 20 20 20 20 44 43 44 20 20 |ranch DCD |
00001570 20 20 20 30 20 20 20 20 20 20 20 20 20 20 20 20 | 0 |
00001580 20 20 20 20 20 20 20 20 20 20 20 3b 20 62 72 61 | ; bra|
00001590 6e 63 68 20 74 6f 20 6f 72 69 67 69 6e 61 6c 20 |nch to original |
000015a0 53 57 49 20 64 65 63 6f 64 65 72 0a 6e 65 77 5f |SWI decoder.new_|
000015b0 62 72 61 6e 63 68 20 20 20 20 20 20 44 43 44 20 |branch DCD |
000015c0 20 20 20 20 30 20 20 20 20 20 20 20 20 20 20 20 | 0 |
000015d0 20 20 20 20 20 20 20 20 20 20 20 20 3b 20 62 72 | ; br|
000015e0 61 6e 63 68 20 74 6f 20 6f 75 72 20 6e 65 77 20 |anch to our new |
000015f0 53 57 49 20 64 65 63 6f 64 65 72 20 20 20 20 20 |SWI decoder |
00001600 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00001610 20 20 20 20 20 20 20 20 20 20 0a 0a 20 20 20 45 | .. E|
00001620 4e 44 0a |ND.|
00001623 
.