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Loading and running bytecode in AUX memory

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This commit is contained in:
David Schmenk 2014-05-13 13:31:56 -07:00
parent a7db164fd4
commit f9efda890f
2 changed files with 305 additions and 279 deletions
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520
PLASMA/src/cmd.pla
View File

@ -1,3 +1,4 @@
const MACHID = $BF98
const iobuffer = $0800
const databuff = $0C00
const MODADDR = $1000
@ -29,10 +30,11 @@ byte version[] = "PLASMA VERSION 0.9"
byte errorstr[] = "ERROR: $"
byte okstr[] = "OK"
byte heaperr[] = "ERR: OUT OF HEAP\n"
;byte xheaperr[] = "ERR: OUT OF AUX HEAP\n"
byte xheaperr[] = "ERR: OUT OF AUX HEAP\n"
byte heapstr[] = "HEAP START: $"
byte freestr[] = "MEM FREE: $"
byte prefix[32] = ""
byte adddefstr[] = "ADD DEF = "
;
; Standard Library exported functions.
;
@ -52,15 +54,15 @@ byte hpalignstr[] = "HEAPALLOCALIGN"
byte hpallocstr[] = "HEAPALLOC"
byte hprelstr[] = "HEAPRELEASE"
byte hpavailstr[] = "HEAPAVAIL"
;byte xhpmarkstr[] = "XHEAPMARK"
;byte xhpallocstr[]= "XHEAPALLOC"
;byte xhprelstr[] = "XHEAPRELEASE"
;byte xhpavailstr[]= "XHEAPAVAIL"
byte xhpmarkstr[] = "XHEAPMARK"
byte xhpallocstr[]= "XHEAPALLOC"
byte xhprelstr[] = "XHEAPRELEASE"
byte xhpavailstr[]= "XHEAPAVAIL"
byte memclrstr[] = "MEMCLR"
byte memsetstr[] = "MEMSET"
byte memcpystr[] = "MEMCPY"
;byte xmemcpystr[] = "XMEMCPY"
;byte memxcpystr[] = "MEMXCPY"
byte xmemcpystr[] = "XMEMCPY"
byte memxcpystr[] = "MEMXCPY"
byte uisgtstr[] = "ISUGT"
byte uisgestr[] = "ISUGE"
byte uisltstr[] = "ISULT"
@ -79,16 +81,16 @@ word = @hpmarkstr, @markheap
word = @hpallocstr,@allocheap
word = @hpalignstr,@allocalignheap
word = @hprelstr, @releaseheap
;word = @xhpavailstr,@availxheap
;word = @xhpmarkstr,@markxheap
;word = @xhpallocstr,@allocxheap
;word = @xhprelstr, @releasexheap
;word = @xhpavailstr,@availxheap
word = @xhpavailstr,@availxheap
word = @xhpmarkstr,@markxheap
word = @xhpallocstr,@allocxheap
word = @xhprelstr, @releasexheap
word = @xhpavailstr,@availxheap
word = @memclrstr, @memclr
word = @memsetstr, @memset
word = @memcpystr, @memcpy
;word = @xmemcpystr,@xmemcpy
;word = @memxcpystr,@memxcpy
word = @xmemcpystr,@xmemcpy
word = @memxcpystr,@memxcpy
word = @uisgtstr, @uword_isgt
word = @uisgestr, @uword_isge
word = @uisltstr, @uword_islt
@ -97,8 +99,7 @@ word = 0
;
; System variable.
;
word heapstart, heap
;word xheap
word heapstart, heap, xheap
word sysflags
word lastsym
word perr
@ -348,65 +349,61 @@ end
;
; COPY FROM MAIN MEM TO AUX MEM.
;
; MEMXCPY(SRC, DST, SIZE)
; MEMXCPY(DST, SRC, SIZE)
;
;asm memxcpy
; LDA ESTKL+2,X
; STA $3C
; LDA ESTKH+2,X
; STA $3D
; LDA ESTKL+1,X
; STA $42
; LDA ESTKH+1,X
; STA $43
; LDA ESTKL,X
; CLC
; ADC $3C
; STA $3E
; LDA ESTKH,X
; ADC $3D
; STA $3F
; STX ESP
; BIT ROMEN
; SEC
; JSR $C312
; BIT LCRDEN+LCBNK2
; LDX ESP
; INX
; INX
; RTS
;end
asm memxcpy
LDA ESTKL+1,X
STA $3C
CLC
ADC ESTKL,X
STA $3E
LDA ESTKH+1,X
STA $3D
ADC ESTKH,X
STA $3F
LDA ESTKL+2,X
STA $42
LDA ESTKH+2,X
STA $43
STX ESP
BIT ROMEN
SEC
JSR $C311
BIT LCRDEN+LCBNK2
LDX ESP
INX
INX
RTS
end
;
; COPY FROM AUX MEM TO MAIN MEM.
;
; XMEMCPY(SRC, DST, SIZE)
; XMEMCPY(DST, SRC, SIZE)
;
;asm xmemcpy
; LDA ESTKL+2,X
; STA $3C
; LDA ESTKH+2,X
; STA $3D
; LDA ESTKL+1,X
; STA $42
; LDA ESTKH+1,X
; STA $43
; LDA ESTKL,X
; CLC
; ADC $3C
; STA $3E
; LDA ESTKH,X
; ADC $3D
; STA $3F
; STX ESP
; BIT ROMEN
; CLC
; JSR $C312
; BIT LCRDEN+LCBNK2
; LDX ESP
; INX
; INX
; RTS
;end
asm xmemcpy
LDA ESTKL+1,X
STA $3C
CLC
ADC ESTKL,X
STA $3E
LDA ESTKH+1,X
STA $3D
ADC ESTKH,X
STA $3F
LDA ESTKL+2,X
STA $42
LDA ESTKH+2,X
STA $43
STX ESP
BIT ROMEN
CLC
JSR $C311
BIT LCRDEN+LCBNK2
LDX ESP
INX
INX
RTS
end
;
; HOME
;
@ -792,54 +789,54 @@ def releaseheap(newheap)
heap = newheap;
return @newheap - heap;
end
;def availxheap(void)
; return $BF00 - xheap;
;end
;def allocxheap(size)
; word addr
; addr = heap
; xheap = xheap + size
; if sysflags & restxt1
; if uword_isle(addr, $0800) and uword_isgt(xheap, $0400)
; addr = $4000
; xheap = addr + size
; fin
; fin
; if sysflags & restxt2
; if uword_isle(addr, $0C00) and uword_isgt(xheap, $0800)
; addr = $4000
; xheap = addr + size
; fin
; fin
; if sysflags & resxhgr1
; if uword_isle(addr, $4000) and uword_isgt(xheap, $2000)
; addr = $4000
; xheap = addr + size
; fin
; fin
; if sysflags & resxhgr2
; if uword_isle(addr, $6000) and uword_isgt(xheap, $4000)
; addr = $6000
; xheap = addr + size
; fin
; fin
; if uword_isge(xheap, $BF00)
; prstr(@xheaperr)
; return 0
; fin
; return addr
;end
;def freexheap(size)
; xheap = xheap - size
; return $BF00 - heap
;end
;def markxheap
; return xheap
;end
;def releasexheap(newxheap)
; xheap = newxheap;
; return $BF00 - xheap
;end
def availxheap(void)
return $BF00 - xheap;
end
def allocxheap(size)
word xaddr
xaddr = xheap
xheap = xheap + size
if sysflags & restxt1
if uword_isle(xaddr, $0800) and uword_isgt(xheap, $0400)
xaddr = $4000
xheap = xaddr + size
fin
fin
if sysflags & restxt2
if uword_isle(xaddr, $0C00) and uword_isgt(xheap, $0800)
xaddr = $4000
xheap = xaddr + size
fin
fin
if sysflags & resxhgr1
if uword_isle(xaddr, $4000) and uword_isgt(xheap, $2000)
xaddr = $4000
xheap = xaddr + size
fin
fin
if sysflags & resxhgr2
if uword_isle(xaddr, $6000) and uword_isgt(xheap, $4000)
xaddr = $6000
xheap = xaddr + size
fin
fin
if uword_isge(xheap, $BF00)
prstr(@xheaperr)
return 0
fin
return xaddr
end
def freexheap(size)
xheap = xheap - size
return $BF00 - heap
end
def markxheap
return xheap
end
def releasexheap(newxheap)
xheap = newxheap;
return $BF00 - xheap
end
;
; DCI table routines,
;
@ -939,6 +936,13 @@ def addmod(mod, addr)
return addtbl(modtosym(mod, @dci), addr, @lastsym)
end
def adddef(bank, addr, deflast)
prstr(@adddefstr)
prbyte(bank)
cout(':')
prword(addr)
cout('@')
prword(*deflast)
crout
(*deflast).0 = $20
if bank == 0
(*deflast):1 = $03D6 ; JSR $03D6 (MAIN MEM INTERP)
@ -973,11 +977,11 @@ def lookupextern(esd, index)
return 0
end
def loadmod(mod)
word refnum, len, modsize, flags, bytecode, defcnt, fixup, addr, init, modaddr, modfix
word refnum, rdlen, modsize, flags, bytecode, defofst, defcnt, init, fixup
word addr, defaddr, modaddr, modfix
word deftbl, deflast
word moddep, rld, esd, cdd, sym;
byte str[16]
byte filename[64]
byte defbank, str[16], filename[64]
byte header[128]
;
@ -987,15 +991,15 @@ def loadmod(mod)
refnum = open(@filename, iobuffer)
if refnum > 0
init = 0
len = read(refnum, @header, 128)
rdlen = read(refnum, @header, 128)
modsize = header:0
if len > 4 and header:2 == $DA7E ; DAVE = magic number :-)
if rdlen > 4 and header:2 == $DA7E ; DAVE = magic number :-)
;
; This is an EXTended RELocatable (data+bytecode) module.
;
flags = header:4
sysflags = sysflags | flags
bytecode = header:6
defofst = header:6
defcnt = header:8
init = header:10
moddep = @header + 12
@ -1025,36 +1029,45 @@ def loadmod(mod)
; Reset read pointer.
;
refnum = open(@filename, iobuffer)
len = read(refnum, @header, 128)
rdlen = read(refnum, @header, 128)
fin
fin
;
; Alloc heap space for relocated module (data + bytecode).
;
modaddr = allocheap(modsize)
memcpy(modaddr, @header, len)
memcpy(modaddr, @header, rdlen)
;
; Raad in remainder of module into memory for fixups.
; Read in remainder of module into memory for fixups.
;
addr = modaddr + len;
addr = modaddr;
repeat
len = read(refnum, addr, 4096)
addr = addr + len
until len <= 0
addr = addr + rdlen
rdlen = read(refnum, addr, 4096)
until rdlen <= 0
close(refnum)
;
; Apply all fixups and symbol import/export.
;
len = *modaddr
modfix = modaddr - MODADDR
bytecode = bytecode + modfix
rld = modaddr + len ; Re-Locatable Directory
cdd = rld ; Code Definition Directory
esd = rld ; Extern+Entry Symbol Directory
while ^esd <> $00 ; Scan to end of RLD
modfix = modaddr - MODADDR
bytecode = defofst + modfix
rld = modaddr + modsize ; Re-Locatable Directory
cdd = rld ; Code Definition Directory
esd = rld ; Extern+Entry Symbol Directory
while ^esd <> $00 ; Scan to end of ESD
esd = esd + 4
loop
esd = esd + 1
;
; Locate bytecode defs in appropriate bank.
;
if ^MACHID & $30
defbank = 1
defaddr = allocxheap(rld - bytecode)
else
defbank = 0
defaddr = bytecode
fin
;
; Run through the Re-Location Dictionary.
;
@ -1063,9 +1076,9 @@ def loadmod(mod)
;
; This is a bytcode def entry - add it to the def directory.
;
addr = (rld):1 + modfix
(rld):1 = addr
adddef(0, addr, @deflast)
;addr = (rld):1 + modfix
;(rld):1 = addr
adddef(defbank, (rld):1 - defofst + defaddr, @deflast)
else
addr = (rld):1 + modfix
if ^rld & $80
@ -1087,7 +1100,7 @@ def loadmod(mod)
;
; Bytecode address - replace with call def directory.
;
fixup = lookupdef(fixup, deftbl)
fixup = lookupdef(fixup - bytecode + defaddr, deftbl)
fin
fin
if ^rld & $80
@ -1124,12 +1137,22 @@ def loadmod(mod)
;
; Use the def directory address for bytecode.
;
addr = lookupdef(0, addr, deftbl)
addr = lookupdef(0, addr - bytecode + defaddr, deftbl)
fin
addsym(sym, addr)
fin
esd = esd + 3
loop
if defbank
;
; Move bytecode to AUX bank.
;
memxcpy(defaddr, bytecode, modsize - (bytecode - modaddr))
;
; Free up the bytecode in main memory.
;
releaseheap(bytecode)
fin
else
perr = perr | 0x100
return -perr
@ -1138,86 +1161,89 @@ def loadmod(mod)
; Call init routine if it exists.
;
if init
return adddef(0, init + modfix, @deflast)()
return adddef(defbank, init - defofst + defaddr, @deflast)()
fin
return 0
end
;
; Command mode
;
def volumes
word strbuf
byte i
;def volumes
; word strbuf
; byte i
strbuf = online()
for i = 0 to 15
^strbuf = ^strbuf & $0F
if ^strbuf
cout('/')
prstr(strbuf)
crout()
fin
strbuf = strbuf + 16
next
end
def catalog(optpath)
byte path[64]
byte refnum
byte firstblk
byte entrylen, entriesblk
byte i, type, len
word entry, filecnt
; strbuf = online()
; for i = 0 to 15
; ^strbuf = ^strbuf & $0F
; if ^strbuf
; cout('/')
; prstr(strbuf)
; crout()
; fin
; strbuf = strbuf + 16
; next
;end
;def catalog(optpath)
; byte path[64]
; byte refnum
; byte firstblk
; byte entrylen, entriesblk
; byte i, type, len
; word entry, filecnt
if ^optpath
memcpy(@path, optpath, ^optpath + 1)
else
getpfx(@path)
prstr(@path)
crout()
fin
refnum = open(@path, iobuffer)
if perr
return perr
fin
firstblk = 1
repeat
if read(refnum, databuff, 512) == 512
entry = databuff + 4
if firstblk
entrylen = databuff.$23
entriesblk = databuff.$24
filecnt = databuff:$25
entry = entry + entrylen
fin
for i = firstblk to entriesblk
type = ^entry
if type <> 0
len = type & $0F
^entry = len
prstr(entry)
if type & $F0 == $D0 ; Is it a directory?
cout('/')
len = len + 1
elsif (entry).$10 == $FF
cout('*')
len = len + 1
fin
for len = 19 - len downto 0
cout(' ')
next
filecnt = filecnt - 1
fin
entry = entry + entrylen
next
firstblk = 0
else
filecnt = 0
fin
until filecnt == 0
close(refnum)
crout()
return 0
end
; if ^optpath
; memcpy(@path, optpath, ^optpath + 1)
; else
; getpfx(@path)
; prstr(@path)
; crout()
; fin
; refnum = open(@path, iobuffer)
; if perr
; return perr
; fin
; firstblk = 1
; repeat
; if read(refnum, databuff, 512) == 512
; entry = databuff + 4
; if firstblk
; entrylen = databuff.$23
; entriesblk = databuff.$24
; filecnt = databuff:$25
; entry = entry + entrylen
; fin
; for i = firstblk to entriesblk
; type = ^entry
; if type <> 0
; len = type & $0F
; ^entry = len
; prstr(entry)
; if type & $F0 == $D0 ; Is it a directory?
; cout('/')
; len = len + 1
; elsif (entry).$10 == $FF
; cout('-')
; len = len + 1
; elsif (entry).$10 == $FE
; cout('+')
; len = len + 1
; fin
; for len = 19 - len downto 0
; cout(' ')
; next
; filecnt = filecnt - 1
; fin
; entry = entry + entrylen
; next
; firstblk = 0
; else
; filecnt = 0
; fin
; until filecnt == 0
; close(refnum)
; crout()
; return 0
;end
def stripchars(strptr)
while ^strptr and ^(strptr + 1) <> ' '
memcpy(strptr + 1, strptr + 2, ^strptr)
@ -1270,31 +1296,31 @@ def resetmemfiles
^$BF58 = $CF
^$BF6F = $01
end
def execsys(sysfile)
byte refnum
word len
;def execsys(sysfile)
; byte refnum
; word len
if ^sysfile
memcpy($280, sysfile, ^sysfile + 1)
striptrail(sysfile)
refnum = open(sysfile, iobuffer)
if refnum
len = read(refnum, $2000, $FFFF)
resetmemfiles()
if len
memcpy(sysfile, $280, ^$280 + 1)
if stripchars(sysfile) and ^$2000 == $4C and *$2003 == $EEEE
stripspaces(sysfile)
if ^$2006 <= ^sysfile
memcpy($2006, sysfile, ^sysfile + 1)
fin
fin
striptrail($280)
exec()
fin
fin
fin
end
; if ^sysfile
; memcpy($280, sysfile, ^sysfile + 1)
; striptrail(sysfile)
; refnum = open(sysfile, iobuffer)
; if refnum
; len = read(refnum, $2000, $FFFF)
; resetmemfiles()
; if len
; memcpy(sysfile, $280, ^$280 + 1)
; if stripchars(sysfile) and ^$2000 == $4C and *$2003 == $EEEE
; stripspaces(sysfile)
; if ^$2006 <= ^sysfile
; memcpy($2006, sysfile, ^sysfile + 1)
; fin
; fin
; striptrail($280)
; exec()
; fin
; fin
; fin
;end
def execmod(modfile)
byte dci[17], moddci[17]
word saveheap, globals
@ -1313,7 +1339,7 @@ def execmod(modfile)
loop
sysflags = 0
heap = heapstart
; xheap = $0400
xheap = $0400
loadmod(@moddci)
fin
end
@ -1335,15 +1361,15 @@ while 1
when toupper(parsecmd(cmdptr))
is 'Q'
reboot()
is 'C'
catalog(cmdptr)
; is 'C'
; catalog(cmdptr)
is 'P'
setpfx(cmdptr)
is 'V'
volumes();
is '-'
execsys(cmdptr)
perr = $46
; is 'V'
; volumes();
; is '-'
; execsys(cmdptr)
; perr = $46
is '+'
execmod(cmdptr)
wend

64
PLASMA/src/plvm02.s
View File

@ -152,17 +152,6 @@ PAGE3 = *
VMCORE = *
!PSEUDOPC $D000 {
;*
;* OPCODE TABLE
;*
OPTBL !WORD ZERO,ADD,SUB,MUL,DIV,MOD,INCR,DECR ; 00 02 04 06 08 0A 0C 0E
!WORD NEG,COMP,BAND,IOR,XOR,SHL,SHR,IDXW ; 10 12 14 16 18 1A 1C 1E
!WORD LNOT,LOR,LAND,LA,LLA,CB,CW,SWAP ; 20 22 24 26 28 2A 2C 2E
!WORD DROP,DUP,PUSH,PULL,BRGT,BRLT,BREQ,BRNE ; 30 32 34 36 38 3A 3C 3E
!WORD ISEQ,ISNE,ISGT,ISLT,ISGE,ISLE,BRFLS,BRTRU ; 40 42 44 46 48 4A 4C 4E
!WORD BRNCH,IBRNCH,CALL,ICAL,ENTER,LEAVE,RET,NEXTOP ; 50 52 54 56 58 5A 5C 5E
!WORD LB,LW,LLB,LLW,LAB,LAW,DLB,DLW ; 60 62 64 66 68 6A 6C 6E
!WORD SB,SW,SLB,SLW,SAB,SAW,DAB,DAW ; 70 72 74 76 78 7A 7C 7E
;*
;* OPXCODE TABLE
;*
OPXTBL !WORD ZEROX,ADDX,SUBX,MULX,DIVX,MODX,INCRX,DECRX ; 00 02 04 06 08 0A 0C 0E
@ -174,6 +163,17 @@ OPXTBL !WORD ZEROX,ADDX,SUBX,MULX,DIVX,MODX,INCRX,DECRX ; 00 02 04 06 08 0
!WORD LBX,LWX,LLBX,LLWX,LABX,LAWX,DLBX,DLWX ; 60 62 64 66 68 6A 6C 6E
!WORD SBX,SWX,SLBX,SLWX,SABX,SAWX,DABX,DAWX ; 70 72 74 76 78 7A 7C 7E
;*
;* OPCODE TABLE
;*
OPTBL !WORD ZERO,ADD,SUB,MUL,DIV,MOD,INCR,DECR ; 00 02 04 06 08 0A 0C 0E
!WORD NEG,COMP,BAND,IOR,XOR,SHL,SHR,IDXW ; 10 12 14 16 18 1A 1C 1E
!WORD LNOT,LOR,LAND,LA,LLA,CB,CW,SWAP ; 20 22 24 26 28 2A 2C 2E
!WORD DROP,DUP,PUSH,PULL,BRGT,BRLT,BREQ,BRNE ; 30 32 34 36 38 3A 3C 3E
!WORD ISEQ,ISNE,ISGT,ISLT,ISGE,ISLE,BRFLS,BRTRU ; 40 42 44 46 48 4A 4C 4E
!WORD BRNCH,IBRNCH,CALL,ICAL,ENTER,LEAVE,RET,NEXTOP ; 50 52 54 56 58 5A 5C 5E
!WORD LB,LW,LLB,LLW,LAB,LAW,DLB,DLW ; 60 62 64 66 68 6A 6C 6E
!WORD SB,SW,SLB,SLW,SAB,SAW,DAB,DAW ; 70 72 74 76 78 7A 7C 7E
;*
;* 'BYE' COMMAND PROCESSING
;*
!PSEUDOPC $1000 {
@ -274,6 +274,19 @@ IINTRPX STA LCRWEN+LCBNK2 ; WRITE ENABLE LANGUAGE CARD
DEY
BEQ FETCHOPX
;*
;* INTERP BYTECODE IN AUX MEM
;*
NEXTOPHX INC IPH
BNE FETCHOPX
DROPX INX
NEXTOPX INY
BEQ NEXTOPHX
FETCHOPX ;SEI
STA ALTRDON
LDA (IP),Y
STA *+4
JMP (OPXTBL)
;*
;* INTERP BYTECODE IN MAIN MEM
;*
NEXTOPH INC IPH
@ -282,23 +295,10 @@ DROP INX
NEXTOP INY
BEQ NEXTOPH
FETCHOP LDA (IP),Y
ORA #$80 ; SELECT OP OPCODES
STA *+4
JMP (OPTBL)
;*
;* INTERP BYTECODE IN AUX MEM
;*
NEXTOPHX INC IPH
BNE FETCHOPX
DROPX INX
NEXTOPX INY
BEQ NEXTOPHX
FETCHOPX SEI
STA ALTRDON
LDA (IP),Y
ORA #$80 ; SELECT OPX OPCODES
STA *+4
JMP (OPXTBL)
;*
;* INDIRECT JUMP TO (TMP)
;*
JMPTMP JMP (TMP)
@ -1030,7 +1030,7 @@ LLBX +INC_IP
LDA #$00
STA ESTKH,X
LDY IPY
JMP NEXTOP
JMP NEXTOPX
LLWX +INC_IP
LDA (IP),Y
STY IPY
@ -1043,7 +1043,7 @@ LLWX +INC_IP
LDA (IFP),Y
STA ESTKH,X
LDY IPY
JMP NEXTOP
JMP NEXTOPX
;*
;* LOAD VALUE FROM ABSOLUTE ADDRESS
;*
@ -1753,7 +1753,7 @@ CALLX +INC_IP
PHA
TYA
PHA
CLI
;CLI
JSR JMPTMP
PLA
TAY
@ -1801,7 +1801,7 @@ ICALX LDA ESTKL,X
TYA
PHA
STA ALTRDOFF
CLI
;CLI
JSR JMPTMP
PLA
TAY
@ -1861,7 +1861,6 @@ ENTERX +INC_IP
LDA (IP),Y
STA NPARMS
STY IPY
STA ALTRDOFF
LDA IFPL
PHA
SEC
@ -1871,6 +1870,7 @@ ENTERX +INC_IP
PHA
SBC #$00
STA IFPH
STA ALTRDOFF
LDY #$01
PLA
STA (IFP),Y
@ -1915,10 +1915,10 @@ LEAVEX STA ALTRDOFF
STA IFPL
PLA
STA IFPH
CLI
;CLI
RTS
RETX STA ALTRDOFF
CLI
;CLI
RTS
VMEND = *
}