Home » Archimedes archive » Archimedes World » AW-1992-09.adf » AWSept92 » !AWSept92/Goodies/Work/s/swi
!AWSept92/Goodies/Work/s/swi
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 » Archimedes World » AW-1992-09.adf » AWSept92 |
| Filename: | !AWSept92/Goodies/Work/s/swi |
| Read OK: | ✔ |
| File size: | 06BD bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
; /*********************************************************************/
; /* */
; /* Wimp Routine Library. */
; /* */
; /* Archimedes World 1992 */
; /* */
; /* Written By John Skingley, with full acknowledgment to Acorn. */
; /* */
; /*********************************************************************/
; Register names
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
r13 RN 13
r14 RN 14
r15 RN 15
EXPORT |Swi|
AREA |C$$code|, CODE, READONLY
; C calling syntax: swi_error *Swi( int swinumber, int regs[] );
label DCB "Swi", 0 ; Include routine name for trace-back.
ALIGN
length * . - label
DCD &FF000000 + length
Swi STMDB r13!, {r4-r9, r14}
ORR r0, r0, #&EF000000 ; Add rest of op-code to swi number.
ADR r4, exit
LDMIA r4, {r5, r6, r7, r8, r9}
STMDB r13!, {r0, r5,r6,r7,r8,r9} ; Copy swi and exit code onto stack
MOVS r12, r1
LDMNEIA r12, {r0-r9} ; Load registers for swi call
MOV r15, r13 ; Carry out Swi operation.
exit TEQ r12, #0
STMNEIA r12, {r0-r9}
MOVVC r0, #0
ADD r13, r13, #4*4
LDMIA r13!, {r1, r2, r4-r9, r15}^
END
00000000 3b 20 2f 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a |; /*************|
00000010 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a |****************|
*
00000040 2a 2a 2a 2a 2a 2a 2a 2a 2f 0a 3b 20 2f 2a 20 20 |********/.; /* |
00000050 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
*
00000090 20 2a 2f 0a 3b 20 2f 2a 20 20 57 69 6d 70 20 52 | */.; /* Wimp R|
000000a0 6f 75 74 69 6e 65 20 4c 69 62 72 61 72 79 2e 20 |outine Library. |
000000b0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
*
000000d0 20 20 20 20 20 20 20 20 20 20 20 2a 2f 0a 3b 20 | */.; |
000000e0 2f 2a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |/* |
000000f0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
*
00000120 20 20 20 20 20 2a 2f 0a 3b 20 2f 2a 20 20 41 72 | */.; /* Ar|
00000130 63 68 69 6d 65 64 65 73 20 57 6f 72 6c 64 20 31 |chimedes World 1|
00000140 39 39 32 20 20 20 20 20 20 20 20 20 20 20 20 20 |992 |
00000150 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00000160 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 2a | *|
00000170 2f 0a 3b 20 2f 2a 20 20 20 20 20 20 20 20 20 20 |/.; /* |
00000180 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
*
000001b0 20 20 20 20 20 20 20 20 20 2a 2f 0a 3b 20 2f 2a | */.; /*|
000001c0 20 20 57 72 69 74 74 65 6e 20 42 79 20 4a 6f 68 | Written By Joh|
000001d0 6e 20 53 6b 69 6e 67 6c 65 79 2c 20 77 69 74 68 |n Skingley, with|
000001e0 20 66 75 6c 6c 20 61 63 6b 6e 6f 77 6c 65 64 67 | full acknowledg|
000001f0 6d 65 6e 74 20 74 6f 20 41 63 6f 72 6e 2e 20 20 |ment to Acorn. |
00000200 20 20 20 2a 2f 0a 3b 20 2f 2a 20 20 20 20 20 20 | */.; /* |
00000210 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
*
00000240 20 20 20 20 20 20 20 20 20 20 20 20 20 2a 2f 0a | */.|
00000250 3b 20 2f 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a |; /*************|
00000260 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a |****************|
*
00000290 2a 2a 2a 2a 2a 2a 2a 2a 2f 0a 0a 3b 20 52 65 67 |********/..; Reg|
000002a0 69 73 74 65 72 20 6e 61 6d 65 73 0a 0a 72 30 20 |ister names..r0 |
000002b0 20 52 4e 20 30 0a 72 31 20 20 52 4e 20 31 0a 72 | RN 0.r1 RN 1.r|
000002c0 32 20 20 52 4e 20 32 0a 72 33 20 20 52 4e 20 33 |2 RN 2.r3 RN 3|
000002d0 0a 72 34 20 20 52 4e 20 34 0a 72 35 20 20 52 4e |.r4 RN 4.r5 RN|
000002e0 20 35 0a 72 36 20 20 52 4e 20 36 0a 72 37 20 20 | 5.r6 RN 6.r7 |
000002f0 52 4e 20 37 0a 72 38 20 20 52 4e 20 38 0a 72 39 |RN 7.r8 RN 8.r9|
00000300 20 20 52 4e 20 39 0a 72 31 30 20 52 4e 20 31 30 | RN 9.r10 RN 10|
00000310 0a 72 31 31 20 52 4e 20 31 31 0a 72 31 32 20 52 |.r11 RN 11.r12 R|
00000320 4e 20 31 32 0a 72 31 33 20 52 4e 20 31 33 0a 72 |N 12.r13 RN 13.r|
00000330 31 34 20 52 4e 20 31 34 0a 72 31 35 20 52 4e 20 |14 RN 14.r15 RN |
00000340 31 35 0a 0a 20 20 20 20 20 20 20 20 45 58 50 4f |15.. EXPO|
00000350 52 54 20 20 7c 53 77 69 7c 0a 20 20 20 20 20 20 |RT |Swi|. |
00000360 20 20 41 52 45 41 20 20 20 20 7c 43 24 24 63 6f | AREA |C$$co|
00000370 64 65 7c 2c 20 43 4f 44 45 2c 20 52 45 41 44 4f |de|, CODE, READO|
00000380 4e 4c 59 0a 0a 3b 20 20 20 43 20 63 61 6c 6c 69 |NLY..; C calli|
00000390 6e 67 20 73 79 6e 74 61 78 3a 20 20 73 77 69 5f |ng syntax: swi_|
000003a0 65 72 72 6f 72 20 2a 53 77 69 28 20 69 6e 74 20 |error *Swi( int |
000003b0 73 77 69 6e 75 6d 62 65 72 2c 20 69 6e 74 20 72 |swinumber, int r|
000003c0 65 67 73 5b 5d 20 29 3b 0a 0a 6c 61 62 65 6c 20 |egs[] );..label |
000003d0 20 20 44 43 42 20 20 20 20 20 22 53 77 69 22 2c | DCB "Swi",|
000003e0 20 30 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | 0 |
000003f0 20 20 20 20 20 20 20 3b 20 49 6e 63 6c 75 64 65 | ; Include|
00000400 20 72 6f 75 74 69 6e 65 20 6e 61 6d 65 20 66 6f | routine name fo|
00000410 72 20 74 72 61 63 65 2d 62 61 63 6b 2e 0a 20 20 |r trace-back.. |
00000420 20 20 20 20 20 20 41 4c 49 47 4e 0a 6c 65 6e 67 | ALIGN.leng|
00000430 74 68 20 2a 20 2e 20 2d 20 6c 61 62 65 6c 0a 20 |th * . - label. |
00000440 20 20 20 20 20 20 20 44 43 44 20 20 20 20 20 26 | DCD &|
00000450 46 46 30 30 30 30 30 30 20 2b 20 6c 65 6e 67 74 |FF000000 + lengt|
00000460 68 0a 0a 53 77 69 20 20 20 20 20 53 54 4d 44 42 |h..Swi STMDB|
00000470 20 20 20 72 31 33 21 2c 20 7b 72 34 2d 72 39 2c | r13!, {r4-r9,|
00000480 20 72 31 34 7d 0a 0a 20 20 20 20 20 20 20 20 4f | r14}.. O|
00000490 52 52 20 20 20 20 20 72 30 2c 20 72 30 2c 20 23 |RR r0, r0, #|
000004a0 26 45 46 30 30 30 30 30 30 20 20 20 20 20 20 20 |&EF000000 |
000004b0 20 20 20 20 3b 20 41 64 64 20 72 65 73 74 20 6f | ; Add rest o|
000004c0 66 20 6f 70 2d 63 6f 64 65 20 74 6f 20 73 77 69 |f op-code to swi|
000004d0 20 6e 75 6d 62 65 72 2e 0a 20 20 20 20 20 20 20 | number.. |
000004e0 20 41 44 52 20 20 20 20 20 72 34 2c 20 65 78 69 | ADR r4, exi|
000004f0 74 0a 20 20 20 20 20 20 20 20 4c 44 4d 49 41 20 |t. LDMIA |
00000500 20 20 72 34 2c 20 7b 72 35 2c 20 72 36 2c 20 72 | r4, {r5, r6, r|
00000510 37 2c 20 72 38 2c 20 72 39 7d 0a 20 20 20 20 20 |7, r8, r9}. |
00000520 20 20 20 53 54 4d 44 42 20 20 20 72 31 33 21 2c | STMDB r13!,|
00000530 20 7b 72 30 2c 20 72 35 2c 72 36 2c 72 37 2c 72 | {r0, r5,r6,r7,r|
00000540 38 2c 72 39 7d 20 20 20 3b 20 43 6f 70 79 20 73 |8,r9} ; Copy s|
00000550 77 69 20 61 6e 64 20 65 78 69 74 20 63 6f 64 65 |wi and exit code|
00000560 20 6f 6e 74 6f 20 73 74 61 63 6b 0a 20 20 20 20 | onto stack. |
00000570 20 20 20 20 4d 4f 56 53 20 20 20 20 72 31 32 2c | MOVS r12,|
00000580 20 72 31 0a 20 20 20 20 20 20 20 20 4c 44 4d 4e | r1. LDMN|
00000590 45 49 41 20 72 31 32 2c 20 7b 72 30 2d 72 39 7d |EIA r12, {r0-r9}|
000005a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
000005b0 20 3b 20 4c 6f 61 64 20 72 65 67 69 73 74 65 72 | ; Load register|
000005c0 73 20 66 6f 72 20 73 77 69 20 63 61 6c 6c 0a 20 |s for swi call. |
000005d0 20 20 20 20 20 20 20 4d 4f 56 20 20 20 20 20 72 | MOV r|
000005e0 31 35 2c 20 72 31 33 20 20 20 20 20 20 20 20 20 |15, r13 |
000005f0 20 20 20 20 20 20 20 20 20 20 20 20 3b 20 43 61 | ; Ca|
00000600 72 72 79 20 6f 75 74 20 53 77 69 20 6f 70 65 72 |rry out Swi oper|
00000610 61 74 69 6f 6e 2e 20 0a 0a 65 78 69 74 20 20 20 |ation. ..exit |
00000620 20 54 45 51 20 20 20 20 20 72 31 32 2c 20 23 30 | TEQ r12, #0|
00000630 0a 20 20 20 20 20 20 20 20 53 54 4d 4e 45 49 41 |. STMNEIA|
00000640 20 72 31 32 2c 20 7b 72 30 2d 72 39 7d 0a 20 20 | r12, {r0-r9}. |
00000650 20 20 20 20 20 20 4d 4f 56 56 43 20 20 20 72 30 | MOVVC r0|
00000660 2c 20 23 30 0a 20 20 20 20 20 20 20 20 41 44 44 |, #0. ADD|
00000670 20 20 20 20 20 72 31 33 2c 20 72 31 33 2c 20 23 | r13, r13, #|
00000680 34 2a 34 0a 20 20 20 20 20 20 20 20 4c 44 4d 49 |4*4. LDMI|
00000690 41 20 20 20 72 31 33 21 2c 20 7b 72 31 2c 20 72 |A r13!, {r1, r|
000006a0 32 2c 20 72 34 2d 72 39 2c 20 72 31 35 7d 5e 0a |2, r4-r9, r15}^.|
000006b0 0a 20 20 20 20 20 20 20 20 45 4e 44 0a |. END.|
000006bd 
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