Home » Archimedes archive » Zipped Apps » BCPL » BCPL/armlib/a/MCLiblr
BCPL/armlib/a/MCLiblr
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 » Zipped Apps » BCPL |
| Filename: | BCPL/armlib/a/MCLiblr |
| Read OK: | ✔ |
| File size: | 0C09 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
BaseAddress &1000
LEADR BaseAddress
GET $.Alib.BCPLMacs
GET $.LispDir.BCPL.Asm.LispConsts
RootStackSize * &200
Kreadl * 14 ; different between emulator & u-K
realarm * 1
lispmode * 1
downStack * 0
; description of stack-frame linkage
frrb * 0
frrp * 4
frrl * 8
frpc * 12
E_car * 173
E_cdr * 174
E_rplaca * 175
E_rplacd * 176
E_rplacw1 * 177
E_rplacw2 * 178
arg1 GlobNo 151
true GlobNo 172
fringe GlobNo 356
quotefringe GlobNo 355
interLispFlag GlobNo 443
PollSR GlobNo 5
Add GlobNo 527
Difference GlobNo 571
Sub1 GlobNo 657
Add1 GlobNo 587
Equal GlobNo 605
Greaterp GlobNo 622
Lessp GlobNo 626
Mult GlobNo 536
Remainder GlobNo 575
Quotient GlobNo 574
Rclm GlobNo 520
Funap GlobNo 510
MixError GlobNo 582
Poll GlobNo 811
LinkFexprn GlobNo 832
; The EQ tests at the beginning of each of these call
; sequences provides a free way to do slow function
; linkage (all calls forced through the interpreter).
; Normally, RGB has bit 1 set and branches to these
; sequences set the PSR, so on arrival the instructions
; get executed. When slow linkage is selected, however,
; bit 1 is cleared in RGB so all these sequences (except
; the ICall ones) turn into no-ops
MACRO
CallN $type
jcall$type
MOV rts, rp
LDMED rp, {r14, rl, rp}
call$type
BIC rb, w2, #P_key
LDREQ rb, [rb]
MOVEQ r0, #P_code$type.:SHR:24
CMPEQS r0, rb, LSR #24
BNE qcall$type
zxcall$type
BIC r0, rb, #P_key
LDR r0, [r0, #0]
CMPS w1, r0, LSR #16
BNE qcall$type
icall$type
LDR r0, [rg, #G_fringe]
CMPS r0, rts
ADDGE pc, rb, #4
B gc$type
& 0
MEND
MACRO
Call $type
jcall$type
MOV rts, rp
LDMED rp, {r14, rl, rp}
call$type
BIC rb, w2, #P_key
LDREQ rb, [rb]
MOVEQ r0, #P_code$type.:SHR:24
CMPEQS r0, rb, LSR #24
BNE qcall$type
zxcall$type
icall$type
LDR r0, [rg, #G_fringe]
CMPS r0, rts
BICGE pc, rb, #P_key
B gc$type
MEND
MACRO
XCall $type
xjcall$type
MOV rts, rp
LDMED rp, {r14, rl, rp}
xcall$type
MOV rb, w2
MOV r0, #P_code$type.:SHR:24
CMPS r0, rb,LSR #24
BEQ zxcall$type
MOV r0, #P_id:SHR:24
CMPS r0, w2, LSR #24
BEQ call$type
B qcall$type
MEND
; No special action need be taken here to deal with the case
; of slow linkage, because in that case rb has tag bits 00.
MACRO
QCallBody $type
qcall$type
MOV r0, #P_id:SHR:24 ; was it an ID
CMPS r0, rb, LSR #24
MOV r0, w2
BICEQ rb, rb, #P_key ; if so, is its value the right sort of thing
LDREQ rb, [rb]
MOVEQ r0, #P_code$type.:SHR:24
CMPEQS r0, rb, LSR #24
BEQ zxcall$type ; if so, go ahead and call it
MEND
; BCalln are normal call sequences for functions internal to
; a block. The sequence used depends only on the number of
; arguments in registers; not at all on the function type.
; Call of these sequences is via
; ADD w2, rb, #offset
; MOV r14, pc
; SUB pc, rgb, #Bcalln
; and again rb must be loaded with the address of the base of
; the block.
; The sequence looks much like ordinary ILinks, except that
; a different register is used.
MACRO
BCall $type
bcall$type
LDR r0, [rg, #G_fringe]
CMPS r0, rts
BICGE pc, w2, #P_key
B bgc$type
MEND
LNK a.mclibr
00000000 42 61 73 65 41 64 64 72 65 73 73 20 26 31 30 30 |BaseAddress &100|
00000010 30 0a 0a 20 4c 45 41 44 52 20 42 61 73 65 41 64 |0.. LEADR BaseAd|
00000020 64 72 65 73 73 0a 0a 20 47 45 54 20 24 2e 41 6c |dress.. GET $.Al|
00000030 69 62 2e 42 43 50 4c 4d 61 63 73 0a 20 47 45 54 |ib.BCPLMacs. GET|
00000040 20 24 2e 4c 69 73 70 44 69 72 2e 42 43 50 4c 2e | $.LispDir.BCPL.|
00000050 41 73 6d 2e 4c 69 73 70 43 6f 6e 73 74 73 0a 0a |Asm.LispConsts..|
00000060 52 6f 6f 74 53 74 61 63 6b 53 69 7a 65 09 2a 09 |RootStackSize.*.|
00000070 26 32 30 30 0a 0a 4b 72 65 61 64 6c 09 09 2a 09 |&200..Kreadl..*.|
00000080 31 34 20 20 3b 20 64 69 66 66 65 72 65 6e 74 20 |14 ; different |
00000090 62 65 74 77 65 65 6e 20 65 6d 75 6c 61 74 6f 72 |between emulator|
000000a0 20 26 20 75 2d 4b 0a 72 65 61 6c 61 72 6d 20 09 | & u-K.realarm .|
000000b0 2a 09 31 0a 6c 69 73 70 6d 6f 64 65 09 2a 09 31 |*.1.lispmode.*.1|
000000c0 0a 64 6f 77 6e 53 74 61 63 6b 09 2a 09 30 0a 0a |.downStack.*.0..|
000000d0 3b 20 64 65 73 63 72 69 70 74 69 6f 6e 20 6f 66 |; description of|
000000e0 20 73 74 61 63 6b 2d 66 72 61 6d 65 20 6c 69 6e | stack-frame lin|
000000f0 6b 61 67 65 0a 66 72 72 62 09 09 2a 09 30 0a 66 |kage.frrb..*.0.f|
00000100 72 72 70 09 09 2a 09 34 0a 66 72 72 6c 09 09 2a |rrp..*.4.frrl..*|
00000110 09 38 0a 66 72 70 63 09 09 2a 09 31 32 0a 0a 45 |.8.frpc..*.12..E|
00000120 5f 63 61 72 09 09 2a 09 31 37 33 0a 45 5f 63 64 |_car..*.173.E_cd|
00000130 72 09 09 2a 09 31 37 34 0a 45 5f 72 70 6c 61 63 |r..*.174.E_rplac|
00000140 61 09 2a 09 31 37 35 0a 45 5f 72 70 6c 61 63 64 |a.*.175.E_rplacd|
00000150 09 2a 09 31 37 36 0a 45 5f 72 70 6c 61 63 77 31 |.*.176.E_rplacw1|
00000160 09 2a 09 31 37 37 0a 45 5f 72 70 6c 61 63 77 32 |.*.177.E_rplacw2|
00000170 09 2a 09 31 37 38 0a 0a 61 72 67 31 09 09 47 6c |.*.178..arg1..Gl|
00000180 6f 62 4e 6f 09 31 35 31 0a 74 72 75 65 09 09 47 |obNo.151.true..G|
00000190 6c 6f 62 4e 6f 09 31 37 32 0a 66 72 69 6e 67 65 |lobNo.172.fringe|
000001a0 09 09 47 6c 6f 62 4e 6f 09 33 35 36 0a 71 75 6f |..GlobNo.356.quo|
000001b0 74 65 66 72 69 6e 67 65 09 47 6c 6f 62 4e 6f 09 |tefringe.GlobNo.|
000001c0 33 35 35 0a 69 6e 74 65 72 4c 69 73 70 46 6c 61 |355.interLispFla|
000001d0 67 09 47 6c 6f 62 4e 6f 09 34 34 33 0a 0a 50 6f |g.GlobNo.443..Po|
000001e0 6c 6c 53 52 09 09 47 6c 6f 62 4e 6f 09 35 0a 41 |llSR..GlobNo.5.A|
000001f0 64 64 09 09 47 6c 6f 62 4e 6f 09 35 32 37 0a 44 |dd..GlobNo.527.D|
00000200 69 66 66 65 72 65 6e 63 65 09 47 6c 6f 62 4e 6f |ifference.GlobNo|
00000210 09 35 37 31 0a 53 75 62 31 09 09 47 6c 6f 62 4e |.571.Sub1..GlobN|
00000220 6f 09 36 35 37 0a 41 64 64 31 09 09 47 6c 6f 62 |o.657.Add1..Glob|
00000230 4e 6f 09 35 38 37 0a 45 71 75 61 6c 09 09 47 6c |No.587.Equal..Gl|
00000240 6f 62 4e 6f 09 36 30 35 0a 47 72 65 61 74 65 72 |obNo.605.Greater|
00000250 70 09 47 6c 6f 62 4e 6f 09 36 32 32 0a 4c 65 73 |p.GlobNo.622.Les|
00000260 73 70 09 09 47 6c 6f 62 4e 6f 09 36 32 36 0a 4d |sp..GlobNo.626.M|
00000270 75 6c 74 09 09 47 6c 6f 62 4e 6f 09 35 33 36 0a |ult..GlobNo.536.|
00000280 52 65 6d 61 69 6e 64 65 72 09 47 6c 6f 62 4e 6f |Remainder.GlobNo|
00000290 09 35 37 35 0a 51 75 6f 74 69 65 6e 74 09 47 6c |.575.Quotient.Gl|
000002a0 6f 62 4e 6f 09 35 37 34 0a 52 63 6c 6d 09 09 47 |obNo.574.Rclm..G|
000002b0 6c 6f 62 4e 6f 09 35 32 30 0a 46 75 6e 61 70 09 |lobNo.520.Funap.|
000002c0 09 47 6c 6f 62 4e 6f 09 35 31 30 0a 4d 69 78 45 |.GlobNo.510.MixE|
000002d0 72 72 6f 72 09 47 6c 6f 62 4e 6f 09 35 38 32 0a |rror.GlobNo.582.|
000002e0 50 6f 6c 6c 09 09 47 6c 6f 62 4e 6f 09 38 31 31 |Poll..GlobNo.811|
000002f0 0a 4c 69 6e 6b 46 65 78 70 72 6e 09 47 6c 6f 62 |.LinkFexprn.Glob|
00000300 4e 6f 09 38 33 32 0a 0a 3b 20 54 68 65 20 45 51 |No.832..; The EQ|
00000310 20 74 65 73 74 73 20 61 74 20 74 68 65 20 62 65 | tests at the be|
00000320 67 69 6e 6e 69 6e 67 20 6f 66 20 65 61 63 68 20 |ginning of each |
00000330 6f 66 20 74 68 65 73 65 20 63 61 6c 6c 0a 3b 20 |of these call.; |
00000340 73 65 71 75 65 6e 63 65 73 20 70 72 6f 76 69 64 |sequences provid|
00000350 65 73 20 61 20 66 72 65 65 20 77 61 79 20 74 6f |es a free way to|
00000360 20 64 6f 20 73 6c 6f 77 20 66 75 6e 63 74 69 6f | do slow functio|
00000370 6e 0a 3b 20 6c 69 6e 6b 61 67 65 20 28 61 6c 6c |n.; linkage (all|
00000380 20 63 61 6c 6c 73 20 66 6f 72 63 65 64 20 74 68 | calls forced th|
00000390 72 6f 75 67 68 20 74 68 65 20 69 6e 74 65 72 70 |rough the interp|
000003a0 72 65 74 65 72 29 2e 0a 3b 20 4e 6f 72 6d 61 6c |reter)..; Normal|
000003b0 6c 79 2c 20 52 47 42 20 68 61 73 20 62 69 74 20 |ly, RGB has bit |
000003c0 31 20 73 65 74 20 61 6e 64 20 62 72 61 6e 63 68 |1 set and branch|
000003d0 65 73 20 74 6f 20 74 68 65 73 65 0a 3b 20 73 65 |es to these.; se|
000003e0 71 75 65 6e 63 65 73 20 73 65 74 20 74 68 65 20 |quences set the |
000003f0 50 53 52 2c 20 73 6f 20 6f 6e 20 61 72 72 69 76 |PSR, so on arriv|
00000400 61 6c 20 74 68 65 20 69 6e 73 74 72 75 63 74 69 |al the instructi|
00000410 6f 6e 73 0a 3b 20 67 65 74 20 65 78 65 63 75 74 |ons.; get execut|
00000420 65 64 2e 20 20 57 68 65 6e 20 73 6c 6f 77 20 6c |ed. When slow l|
00000430 69 6e 6b 61 67 65 20 69 73 20 73 65 6c 65 63 74 |inkage is select|
00000440 65 64 2c 20 68 6f 77 65 76 65 72 2c 0a 3b 20 62 |ed, however,.; b|
00000450 69 74 20 31 20 69 73 20 63 6c 65 61 72 65 64 20 |it 1 is cleared |
00000460 69 6e 20 52 47 42 20 73 6f 20 61 6c 6c 20 74 68 |in RGB so all th|
00000470 65 73 65 20 73 65 71 75 65 6e 63 65 73 20 28 65 |ese sequences (e|
00000480 78 63 65 70 74 0a 3b 20 74 68 65 20 49 43 61 6c |xcept.; the ICal|
00000490 6c 20 6f 6e 65 73 29 20 74 75 72 6e 20 69 6e 74 |l ones) turn int|
000004a0 6f 20 6e 6f 2d 6f 70 73 0a 0a 09 4d 41 43 52 4f |o no-ops...MACRO|
000004b0 0a 09 43 61 6c 6c 4e 09 24 74 79 70 65 0a 6a 63 |..CallN.$type.jc|
000004c0 61 6c 6c 24 74 79 70 65 0a 09 4d 4f 56 09 72 74 |all$type..MOV.rt|
000004d0 73 2c 20 72 70 0a 09 4c 44 4d 45 44 09 72 70 2c |s, rp..LDMED.rp,|
000004e0 20 7b 72 31 34 2c 20 72 6c 2c 20 72 70 7d 0a 63 | {r14, rl, rp}.c|
000004f0 61 6c 6c 24 74 79 70 65 0a 09 42 49 43 09 72 62 |all$type..BIC.rb|
00000500 2c 20 77 32 2c 20 23 50 5f 6b 65 79 0a 09 4c 44 |, w2, #P_key..LD|
00000510 52 45 51 09 72 62 2c 20 5b 72 62 5d 0a 09 4d 4f |REQ.rb, [rb]..MO|
00000520 56 45 51 09 72 30 2c 20 23 50 5f 63 6f 64 65 24 |VEQ.r0, #P_code$|
00000530 74 79 70 65 2e 3a 53 48 52 3a 32 34 0a 09 43 4d |type.:SHR:24..CM|
00000540 50 45 51 53 09 72 30 2c 20 72 62 2c 20 4c 53 52 |PEQS.r0, rb, LSR|
00000550 20 23 32 34 0a 09 42 4e 45 09 71 63 61 6c 6c 24 | #24..BNE.qcall$|
00000560 74 79 70 65 0a 7a 78 63 61 6c 6c 24 74 79 70 65 |type.zxcall$type|
00000570 0a 09 42 49 43 09 72 30 2c 20 72 62 2c 20 23 50 |..BIC.r0, rb, #P|
00000580 5f 6b 65 79 0a 09 4c 44 52 09 72 30 2c 20 5b 72 |_key..LDR.r0, [r|
00000590 30 2c 20 23 30 5d 0a 09 43 4d 50 53 09 77 31 2c |0, #0]..CMPS.w1,|
000005a0 20 72 30 2c 20 4c 53 52 20 23 31 36 0a 09 42 4e | r0, LSR #16..BN|
000005b0 45 09 71 63 61 6c 6c 24 74 79 70 65 0a 69 63 61 |E.qcall$type.ica|
000005c0 6c 6c 24 74 79 70 65 0a 09 4c 44 52 09 72 30 2c |ll$type..LDR.r0,|
000005d0 20 5b 72 67 2c 20 23 47 5f 66 72 69 6e 67 65 5d | [rg, #G_fringe]|
000005e0 0a 09 43 4d 50 53 09 72 30 2c 20 72 74 73 0a 09 |..CMPS.r0, rts..|
000005f0 41 44 44 47 45 09 70 63 2c 20 72 62 2c 20 23 34 |ADDGE.pc, rb, #4|
00000600 0a 09 42 09 67 63 24 74 79 70 65 0a 09 26 20 30 |..B.gc$type..& 0|
00000610 0a 09 4d 45 4e 44 0a 0a 09 4d 41 43 52 4f 0a 09 |..MEND...MACRO..|
00000620 43 61 6c 6c 09 24 74 79 70 65 0a 6a 63 61 6c 6c |Call.$type.jcall|
00000630 24 74 79 70 65 0a 09 4d 4f 56 09 72 74 73 2c 20 |$type..MOV.rts, |
00000640 72 70 0a 09 4c 44 4d 45 44 09 72 70 2c 20 7b 72 |rp..LDMED.rp, {r|
00000650 31 34 2c 20 72 6c 2c 20 72 70 7d 0a 63 61 6c 6c |14, rl, rp}.call|
00000660 24 74 79 70 65 0a 09 42 49 43 09 72 62 2c 20 77 |$type..BIC.rb, w|
00000670 32 2c 20 23 50 5f 6b 65 79 0a 09 4c 44 52 45 51 |2, #P_key..LDREQ|
00000680 09 72 62 2c 20 5b 72 62 5d 0a 09 4d 4f 56 45 51 |.rb, [rb]..MOVEQ|
00000690 09 72 30 2c 20 23 50 5f 63 6f 64 65 24 74 79 70 |.r0, #P_code$typ|
000006a0 65 2e 3a 53 48 52 3a 32 34 0a 09 43 4d 50 45 51 |e.:SHR:24..CMPEQ|
000006b0 53 09 72 30 2c 20 72 62 2c 20 4c 53 52 20 23 32 |S.r0, rb, LSR #2|
000006c0 34 0a 09 42 4e 45 09 71 63 61 6c 6c 24 74 79 70 |4..BNE.qcall$typ|
000006d0 65 0a 7a 78 63 61 6c 6c 24 74 79 70 65 0a 69 63 |e.zxcall$type.ic|
000006e0 61 6c 6c 24 74 79 70 65 0a 09 4c 44 52 09 72 30 |all$type..LDR.r0|
000006f0 2c 20 5b 72 67 2c 20 23 47 5f 66 72 69 6e 67 65 |, [rg, #G_fringe|
00000700 5d 0a 09 43 4d 50 53 09 72 30 2c 20 72 74 73 0a |]..CMPS.r0, rts.|
00000710 09 42 49 43 47 45 09 70 63 2c 20 72 62 2c 20 23 |.BICGE.pc, rb, #|
00000720 50 5f 6b 65 79 0a 09 42 09 67 63 24 74 79 70 65 |P_key..B.gc$type|
00000730 0a 09 4d 45 4e 44 0a 0a 09 4d 41 43 52 4f 0a 09 |..MEND...MACRO..|
00000740 58 43 61 6c 6c 09 24 74 79 70 65 0a 78 6a 63 61 |XCall.$type.xjca|
00000750 6c 6c 24 74 79 70 65 0a 09 4d 4f 56 09 72 74 73 |ll$type..MOV.rts|
00000760 2c 20 72 70 0a 09 4c 44 4d 45 44 09 72 70 2c 20 |, rp..LDMED.rp, |
00000770 7b 72 31 34 2c 20 72 6c 2c 20 72 70 7d 0a 78 63 |{r14, rl, rp}.xc|
00000780 61 6c 6c 24 74 79 70 65 0a 09 4d 4f 56 09 72 62 |all$type..MOV.rb|
00000790 2c 20 77 32 0a 09 4d 4f 56 09 72 30 2c 20 23 50 |, w2..MOV.r0, #P|
000007a0 5f 63 6f 64 65 24 74 79 70 65 2e 3a 53 48 52 3a |_code$type.:SHR:|
000007b0 32 34 0a 09 43 4d 50 53 09 72 30 2c 20 72 62 2c |24..CMPS.r0, rb,|
000007c0 4c 53 52 20 23 32 34 0a 09 42 45 51 09 7a 78 63 |LSR #24..BEQ.zxc|
000007d0 61 6c 6c 24 74 79 70 65 0a 09 4d 4f 56 09 72 30 |all$type..MOV.r0|
000007e0 2c 20 23 50 5f 69 64 3a 53 48 52 3a 32 34 0a 09 |, #P_id:SHR:24..|
000007f0 43 4d 50 53 09 72 30 2c 20 77 32 2c 20 4c 53 52 |CMPS.r0, w2, LSR|
00000800 20 23 32 34 0a 09 42 45 51 09 63 61 6c 6c 24 74 | #24..BEQ.call$t|
00000810 79 70 65 0a 09 42 09 71 63 61 6c 6c 24 74 79 70 |ype..B.qcall$typ|
00000820 65 0a 09 4d 45 4e 44 0a 0a 3b 20 4e 6f 20 73 70 |e..MEND..; No sp|
00000830 65 63 69 61 6c 20 61 63 74 69 6f 6e 20 6e 65 65 |ecial action nee|
00000840 64 20 62 65 20 74 61 6b 65 6e 20 68 65 72 65 20 |d be taken here |
00000850 74 6f 20 64 65 61 6c 20 77 69 74 68 20 74 68 65 |to deal with the|
00000860 20 63 61 73 65 0a 3b 20 6f 66 20 73 6c 6f 77 20 | case.; of slow |
00000870 6c 69 6e 6b 61 67 65 2c 20 62 65 63 61 75 73 65 |linkage, because|
00000880 20 69 6e 20 74 68 61 74 20 63 61 73 65 20 72 62 | in that case rb|
00000890 20 68 61 73 20 74 61 67 20 62 69 74 73 20 30 30 | has tag bits 00|
000008a0 2e 0a 0a 09 4d 41 43 52 4f 0a 09 51 43 61 6c 6c |....MACRO..QCall|
000008b0 42 6f 64 79 20 24 74 79 70 65 0a 71 63 61 6c 6c |Body $type.qcall|
000008c0 24 74 79 70 65 0a 09 4d 4f 56 09 72 30 2c 20 23 |$type..MOV.r0, #|
000008d0 50 5f 69 64 3a 53 48 52 3a 32 34 20 20 3b 20 77 |P_id:SHR:24 ; w|
000008e0 61 73 20 69 74 20 61 6e 20 49 44 0a 09 43 4d 50 |as it an ID..CMP|
000008f0 53 09 72 30 2c 20 72 62 2c 20 4c 53 52 20 23 32 |S.r0, rb, LSR #2|
00000900 34 0a 09 4d 4f 56 09 72 30 2c 20 77 32 0a 09 42 |4..MOV.r0, w2..B|
00000910 49 43 45 51 09 72 62 2c 20 72 62 2c 20 23 50 5f |ICEQ.rb, rb, #P_|
00000920 6b 65 79 09 20 20 3b 20 69 66 20 73 6f 2c 20 69 |key. ; if so, i|
00000930 73 20 69 74 73 20 76 61 6c 75 65 20 74 68 65 20 |s its value the |
00000940 72 69 67 68 74 20 73 6f 72 74 20 6f 66 20 74 68 |right sort of th|
00000950 69 6e 67 0a 09 4c 44 52 45 51 09 72 62 2c 20 5b |ing..LDREQ.rb, [|
00000960 72 62 5d 0a 09 4d 4f 56 45 51 09 72 30 2c 20 23 |rb]..MOVEQ.r0, #|
00000970 50 5f 63 6f 64 65 24 74 79 70 65 2e 3a 53 48 52 |P_code$type.:SHR|
00000980 3a 32 34 0a 09 43 4d 50 45 51 53 09 72 30 2c 20 |:24..CMPEQS.r0, |
00000990 72 62 2c 20 4c 53 52 20 23 32 34 0a 09 42 45 51 |rb, LSR #24..BEQ|
000009a0 09 7a 78 63 61 6c 6c 24 74 79 70 65 09 20 20 3b |.zxcall$type. ;|
000009b0 20 69 66 20 73 6f 2c 20 67 6f 20 61 68 65 61 64 | if so, go ahead|
000009c0 20 61 6e 64 20 63 61 6c 6c 20 69 74 0a 09 4d 45 | and call it..ME|
000009d0 4e 44 0a 0a 3b 20 42 43 61 6c 6c 6e 20 61 72 65 |ND..; BCalln are|
000009e0 20 6e 6f 72 6d 61 6c 20 63 61 6c 6c 20 73 65 71 | normal call seq|
000009f0 75 65 6e 63 65 73 20 66 6f 72 20 66 75 6e 63 74 |uences for funct|
00000a00 69 6f 6e 73 20 69 6e 74 65 72 6e 61 6c 20 74 6f |ions internal to|
00000a10 0a 3b 20 61 20 62 6c 6f 63 6b 2e 20 20 54 68 65 |.; a block. The|
00000a20 20 73 65 71 75 65 6e 63 65 20 75 73 65 64 20 64 | sequence used d|
00000a30 65 70 65 6e 64 73 20 6f 6e 6c 79 20 6f 6e 20 74 |epends only on t|
00000a40 68 65 20 6e 75 6d 62 65 72 20 6f 66 0a 3b 20 61 |he number of.; a|
00000a50 72 67 75 6d 65 6e 74 73 20 69 6e 20 72 65 67 69 |rguments in regi|
00000a60 73 74 65 72 73 3b 20 6e 6f 74 20 61 74 20 61 6c |sters; not at al|
00000a70 6c 20 6f 6e 20 74 68 65 20 66 75 6e 63 74 69 6f |l on the functio|
00000a80 6e 20 74 79 70 65 2e 0a 3b 20 43 61 6c 6c 20 6f |n type..; Call o|
00000a90 66 20 74 68 65 73 65 20 73 65 71 75 65 6e 63 65 |f these sequence|
00000aa0 73 20 69 73 20 76 69 61 0a 3b 09 41 44 44 09 77 |s is via.;.ADD.w|
00000ab0 32 2c 20 72 62 2c 20 23 6f 66 66 73 65 74 0a 3b |2, rb, #offset.;|
00000ac0 09 4d 4f 56 09 72 31 34 2c 20 70 63 0a 3b 09 53 |.MOV.r14, pc.;.S|
00000ad0 55 42 09 70 63 2c 20 72 67 62 2c 20 23 42 63 61 |UB.pc, rgb, #Bca|
00000ae0 6c 6c 6e 0a 3b 20 61 6e 64 20 61 67 61 69 6e 20 |lln.; and again |
00000af0 72 62 20 6d 75 73 74 20 62 65 20 6c 6f 61 64 65 |rb must be loade|
00000b00 64 20 77 69 74 68 20 74 68 65 20 61 64 64 72 65 |d with the addre|
00000b10 73 73 20 6f 66 20 74 68 65 20 62 61 73 65 20 6f |ss of the base o|
00000b20 66 0a 3b 20 74 68 65 20 62 6c 6f 63 6b 2e 0a 3b |f.; the block..;|
00000b30 20 54 68 65 20 73 65 71 75 65 6e 63 65 20 6c 6f | The sequence lo|
00000b40 6f 6b 73 20 6d 75 63 68 20 6c 69 6b 65 20 6f 72 |oks much like or|
00000b50 64 69 6e 61 72 79 20 49 4c 69 6e 6b 73 2c 20 65 |dinary ILinks, e|
00000b60 78 63 65 70 74 20 74 68 61 74 0a 3b 20 61 20 64 |xcept that.; a d|
00000b70 69 66 66 65 72 65 6e 74 20 72 65 67 69 73 74 65 |ifferent registe|
00000b80 72 20 69 73 20 75 73 65 64 2e 0a 0a 09 4d 41 43 |r is used....MAC|
00000b90 52 4f 0a 09 42 43 61 6c 6c 09 24 74 79 70 65 0a |RO..BCall.$type.|
00000ba0 62 63 61 6c 6c 24 74 79 70 65 0a 09 4c 44 52 09 |bcall$type..LDR.|
00000bb0 72 30 2c 20 5b 72 67 2c 20 23 47 5f 66 72 69 6e |r0, [rg, #G_frin|
00000bc0 67 65 5d 0a 09 43 4d 50 53 09 72 30 2c 20 72 74 |ge]..CMPS.r0, rt|
00000bd0 73 0a 09 42 49 43 47 45 09 70 63 2c 20 77 32 2c |s..BICGE.pc, w2,|
00000be0 20 23 50 5f 6b 65 79 0a 09 42 09 62 67 63 24 74 | #P_key..B.bgc$t|
00000bf0 79 70 65 0a 09 4d 45 4e 44 0a 0a 09 4c 4e 4b 20 |ype..MEND...LNK |
00000c00 61 2e 6d 63 6c 69 62 72 0a |a.mclibr.|
00000c09 
.