3795 lines
89 KiB
ArmAsm
3795 lines
89 KiB
ArmAsm
/
|
||
/ (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
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/
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/ This product is part of the Amsterdam Compiler Kit.
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/
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/ Permission to use, sell, duplicate or disclose this software must be
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/ obtained in writing. Requests for such permissions may be sent to
|
||
/
|
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/ Dr. Andrew S. Tanenbaum
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/ Wiskundig Seminarium
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/ Vrije Universiteit
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/ Postbox 7161
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/ 1007 MC Amsterdam
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/ The Netherlands
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/
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/
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/------------------------------------------------------------------------------
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/
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/ This is an interpreter for EM programs with no virtual memory
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/ which is adapted from an EM1 interpreter by Hans van Staveren
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/ by Evert Wattel
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/ Vrije Universiteit
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/ Amsterdam
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/
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/ Memory layout:
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/
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/ interpreter em-text pd global tables heap unused stack
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/ __________________________________________________________________
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/ | | | | | | | | | |
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/ | | | | | | | | | |
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/ | 1 | 2 | 3 | 4 | 5 | 6 | | 7 | 8|
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/ | | | | | | | | | |
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/ |____________|_______|____|_______|_______|_____|______|______|__|
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/
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/ 1: Interpreter text+data+bss
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/ 2: EM text
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/ 3: EM procedure descriptors
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/ 4: EM global data area
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/ 5: flow, count and profile tables
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/ 6: EM heap area
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/ 7: EM local data and stack
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/ 8: Arguments to interpreter
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/
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/ Assembly time flags:
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/ .test : controls checking for undefined variables,nil pointers,
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/ array indices, etc....
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/ .prof : controls generation of a runtime profile
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/ .opfreq: controls runtime frequency count per opcode
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/ .flow : controls generation of a flow bitmap
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/ .count : controls generation of a flow count
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/ .last : controls generation of file with last 16
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/ consecutive blocks of lines executed
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/
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/ Register layout:
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/ pcx = EM programcounter
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/ lb = EM base-address
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/ nxt = address of start of interpreter loop
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/
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/ The general structure of this interpreter is as follows:
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/ The opcode byte of the instruction is placed in r0
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/ with sign-extension and multiplied by 2.
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/ If .opfreq is nonzero each occurence of each opcode is counted.
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/ Then, if .prof is nonzero an estimation of the time required
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/ to execute the instruction is added to a counter associated
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/ with the source-line number. This estimation is roughly the
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/ number of memory-cycles needed. At the end of this accounting
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/ loprof points to the loword of the double precision counter.
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/ This can be used by individual execution routines to add some
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/ more to the counter depending on their operand.
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/
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/ NOTE: This interpreter can be loaded in separate I and D space
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/
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/
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/------------------------------------------------------------------------------
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/ Declaring of some constants
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/------------------------------------------------------------------------------
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nxt = r4
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pcx = r3
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lb = r2
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statd = -8.
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unixextra= 1280. / extra memory asked by heap overflow
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und = 100000 / undefined memory pattern
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signext = 177400 / high bits for signextension
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EINVAL = 22. / UNIX error code for bad signal
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/ Interpreter options
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.float = 1
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.opfreq = 0
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.last = 1
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V7 = 1
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V6 = 0
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VPLUS = 0
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HARDWARE_FP = 1
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/------------------------------------------------------------------------------
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/ EM1 machine errors (in the range 0-63)
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/------------------------------------------------------------------------------
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EARRAY = 0.
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ERANGE = 1.
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ESET = 2.
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EIOVFL = 3.
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EFOVFL = 4.
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EFUNFL = 5.
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EIDIVZ = 6.
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EFDIVZ = 7.
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EIUND = 8.
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EFUND = 9.
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ECONV = 10.
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ESTACK = 16.
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EHEAP = 17.
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EILLINS = 18.
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EODDZ = 19.
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ECASE = 20.
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EMEMFLT = 21.
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EBADPTR = 22.
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EBADPC = 23.
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EBADLAE = 24.
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EBADMON = 25.
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EBADLIN = 26.
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EBADGTO = 27.
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/------------------------------------------------------------------------------
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/ Declaring of some instructions unknown to the assembler
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/------------------------------------------------------------------------------
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next = 10407 / = mov nxt,pc; jump to decode loop
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rti = 2 / return from interrupt
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iot = 4 / force core dump
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stst = 170300^tst / store floating point status
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indir = 0 / for sys indir
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exit = 1
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fork = 2
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read = 3
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write = 4
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open = 5
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close = 6
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creat = 8.
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break = 17.
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alarm = 27.
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pause = 29.
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sleep = 35.
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signal = 48.
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/------------------------------------------------------------------------------
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/ External references
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/------------------------------------------------------------------------------
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.globl _end
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/
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/------------------------------------------------------------------------------
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/ Now the real program starts
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/------------------------------------------------------------------------------
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startoff:
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mov sp,r0
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mov sp,ml
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mov sp,filb
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add $2,filb / pointer to argv in filb for error message
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dec (r0)
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mov (r0)+,argc / pass to userprogram later
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bgt 0f / go for argument
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mov $emfile,forward+2 / e.out is load file default
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mov $forward+2,argv
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br 1f
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0:
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tst (r0)+ / skip interpreter name
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mov r0,argv / pass to userprogram later
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mov (r0),forward+2 / argv filename to open call
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1:
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.if V7
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tst (r0)+ / increment r0 look for last arg
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bne 1b
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mov r0,environ
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.endif
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sys indir;forward
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.data
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forward: sys open;0;0
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emfile: <e.out\0>
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.even
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.text
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jes badarg
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mov r0,saver0 / save filedescriptor
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mov r0,r5 / duplicate filedescriptor
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sys read;header;16. / skip first header
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jes badarg / failed
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mov r5,r0 / recall fildes
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sys read;header;16. / read second header
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jes badarg / failed
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cmp r0,$16. / long enough ?
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jne badarg / no.
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mov $_end,r0 / Bottom em-text
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mov r0,pb / program base
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add txtsiz,r0 / reserve space for text
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mov r0,pd / set up proc.descr base
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mov nprocs, r3 / number of procs
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ash $2,r3 / proc. descr is 4 bytes
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.if .count +.prof + .flow
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mul $3,r3 / or 12 bytes
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.endif
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add r3,r0 / reserve space
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mov r0,eb / top of pd space
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mov r0,r3 / base for data fill
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add szdata,r0 / size of external data
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jcs toolarge / too much text and data
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mov r0,globmax / maximum global
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add $1280.,r0 / bit extra core for setup
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mov r0,sybreak+2 / set up for core claim
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sys indir;sybreak / ask for the core
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jes toolarge / too much, sorry
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mov txtsiz,leescal+4 / set up for text read
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mov pb,leescal+2 / start address text read
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mov r5,r0 / file descriptor input
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sys indir;leescal / read!!
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.data
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||
leescal:
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1: sys read;0;0 / read call
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.text
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lblread:
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/ hier is nu dus de tekst ingelezen. De sybreak voor de
|
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/ tabellen en de data moet opnieuw gebeuren.
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.if .last
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mov $47.,r0
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mov $lasttab,r5
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3: clr (r5)+
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sob r0,3b
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mov $-1,(r5)
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sub $96.,r5
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mov r5,linused
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.endif
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lblfloat:
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.if .float
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sys signal;8.;sig8 / catch floating exception
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ldfps $7600
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movf $50200,fr3 / load 2^32 in fr3 for conversion
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/ unsigned to float
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.endif
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sys signal;11.;sig11 / catch segmentation violation
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sys signal;12.;sig12 / catch bad system calls
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/ We make a 1024 buffer for reading in
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/ data descriptors. When the number of
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/ bytes in the buffer is less than 512
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/ we read another block. Descriptors of
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/ more than 512 bytes are not allowed.
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/ This is no restriction since they do
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/ not fit in the descriptor format.
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lblbuf:
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sub $02000,sp / new buffer bottom
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tst (sp) / ask for core
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mov sp,r4 / pointer in descriptor
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mov saver0,r0 / recall fildes
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clr r1 / clear registers for byte
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clr r2 / format instruction and data
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mov sp,r5 / copy
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mov r5,leescal+2 / set up for read
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mov $02000,leescal+4 / idem
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sys indir;leescal / read
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jes badarg / read failed
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cmp $02000,r0 / not yet eof?
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bgt 0f / eof encountered
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add $01000,r5 / buffer middle
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mov r5,saver1 / save buffermiddle to compare
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br datloop / start data initialization
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0: add r0,r5 / now pointer at top of file
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mov r5,saver1 / still set up for compare
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datloop:
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cmp r4,saver1 / descriptor over middle?
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ble 9f / no? go ahead
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jsr pc,blshift / yes? shift block down, read next
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9: dec ndatad / still data to initialize?
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blt finito / no? go on
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movb (r4)+,r1 / opcode descriptor
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beq 0f / if 0 then go there
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mov r3,r5 / copy data pointer
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clr r2 / unsigned integer byte
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bisb (r4)+,r2 / "ored" in for data size
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asl r1 / make opcode even
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mov datswi(r1),pc / main data swich
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.data
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datswi: 0; dat1; dat2; dat3; dat4; dat5; dat6; dat6; dofloat
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.text
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dat3: asl r2 / multiply with 2
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dat2: 2: movb (r4)+,(r3)+ / copy byte from buffer to data
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sob r2,2b / until r2 is 0
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br datloop / next datadescriptor
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dat4: mov eb,r0 / external base should be added
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br 2f / for data pointers
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dat5: mov pb,r0 / and program base for procedures
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2: movb (r4)+,(r3) / move in first byte of pointer
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movb (r4)+,1(r3) / move in second byte of pointer
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add r0,(r3)+ / add pointer base
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sob r2,2b / jump back if there is more
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br datloop / next data descriptor
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dat1: mov $und,(r3)+ / reserve words with undefineds
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sob r2,dat1 / jump back if more
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br datloop / next data descriptor
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0: mov r3,r1 / copy data pointer (odd register)
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sub r5,r1 / subtract previous pointer
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movb (r4)+,(r3) / copy first byte of operand
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movb (r4)+,1(r3) / copy second byte
|
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mul (r3),r1 / the number of bytes to copy
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1: movb (r5)+,(r3)+ / is the product of the operand
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sob r1,1b / and the number of bytes in the
|
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br datloop / previous operation
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dat6: add r2,r3 / new data pointer, the old is
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mov r3,r0 / still in r5
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asr r2 / divide by 2
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beq 6f / case 1 byte is special
|
||
sub $2,r0 / this is the least significant
|
||
/ byte in PDP11-standard
|
||
2: movb (r4)+,(r0)+ / copy low byte
|
||
movb (r4)+,(r0) / copy high byte
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||
sub $3,r0 / next lowest byte
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sob r2,2b / jump if not ready
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br datloop / next descriptor
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6: movb (r4)+,(r5) / copy one byte
|
||
br datloop / next descriptor
|
||
|
||
blshift:
|
||
mov saver1,r1 / bottom of top half
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||
mov r1,r2 / set up bottom
|
||
sub $01000,r2
|
||
mov $1000,r0 / number to copy
|
||
mov r0,leescal+4 / amount to read
|
||
sub r0,r4 / decrease pointer
|
||
asr r0 / 512 bytes is 256 words
|
||
3: mov (r1)+,(r2)+ / copy top half in bottom half
|
||
sob r0,3b
|
||
mov saver1,leescal+2 / set up for read
|
||
blockr:
|
||
mov saver0,r0 / filedescriptor
|
||
sys indir;leescal
|
||
jes badarg
|
||
clr r1 / clear registers which contain
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||
clr r2 / descriptor bytes later
|
||
cmp $01000,r0 / look if eof is encountered
|
||
beq 3f / yes? go on
|
||
add r0,saver1 / no extra read necessary
|
||
3: rts pc
|
||
|
||
finito:
|
||
cmp globmax,r3 / test if data size ok
|
||
jne badarg / load file error
|
||
mov eb,filb
|
||
add $4,filb
|
||
|
||
|
||
mov nprocs,r5 / set up for procdesc read
|
||
mov pd,r3 / proc descriptor base
|
||
asl r5 / multiply with 4 because
|
||
asl r5 / procdes is 4 bytes
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||
1: mov saver1,r1 / look what is available
|
||
sub r4,r1 / in buffer to be read
|
||
add $3,r1 / let it be a multiple
|
||
bic $3,r1 / of four
|
||
sub r1,r5 / subtract what can be read
|
||
asr r1; asr r1; / divide by four
|
||
0:
|
||
movb (r4)+,(r3)+ / copy byte
|
||
movb (r4)+,(r3)+ / copy byte
|
||
movb (r4)+,(r3)+ / copy byte
|
||
movb (r4)+,(r3)+ / copy byte
|
||
add pb,-2(r3) / change em-address in pdp-address
|
||
.if .count + .prof + .flow
|
||
clr (r3)+
|
||
clr (r3)+
|
||
clr (r3)+
|
||
clr (r3)+
|
||
.endif
|
||
sob r1,0b / look if there is more
|
||
tst r5 / is there still a descriptor
|
||
ble 2f; / no? go on
|
||
jsr pc,blshift / yes? read again
|
||
br 1b
|
||
|
||
2:
|
||
cmp eb,r3 / test if procdes is ok
|
||
jne badarg / load file error
|
||
mov saver0,r0 / fildes in r0
|
||
sys close / close input load file
|
||
mov ml,sp / fresh stack
|
||
mov 2(sp),*filb
|
||
.if .flow + .count + .prof
|
||
/ |==================|
|
||
/ Here we fill the fields in the procedure | bytes for locals |
|
||
/ descriptor with table information. The |------------------|
|
||
/ procedure descriptor has six fields, | start address |
|
||
/ like described in this picture. We |------------------|
|
||
/ construct a linked list of the proc. | count pointer |
|
||
/ descriptors, such that the defined |------------------|
|
||
/ order of procedures is compatible | first line nr |
|
||
/ with the text order. Thereafter we |------------------|
|
||
/ scan the text for line information to | link next proc |
|
||
/ fill the countpointer and startline |------------------|
|
||
/ field. The link to the first proc. | current file name|
|
||
/ is in firstp, links are descriptor |==================|
|
||
/ start addresses. The last procedure
|
||
/ links to the external base. All lines in the text get a count
|
||
/ number, lines of a procedure get consecutive count numbers,
|
||
/ the procedure count pointer gives the number of the first line.
|
||
/ Count pointer zero is reserved for the case that no line number
|
||
/ is yet defined.
|
||
|
||
makelink:
|
||
mov pd,r0 / first descriptor
|
||
mov r0,r3 / points to first proc
|
||
mov r0,r4 / pd in register
|
||
mov eb,r5 / eb in register
|
||
|
||
0: mov r0,r1 / copy old descriptor bottom
|
||
add $12.,r0 / next descriptor
|
||
cmp r0,r5 / top of descriptor space
|
||
bhis 4f / ready? continue
|
||
1: cmp 2(r0),2(r1) / compare start addresses
|
||
bhis 2f / 2(r0) large? follow link
|
||
sub $12.,r1 / 2(r0) small? previous descriptor
|
||
cmp r1,r4 / is r1 smaller than pd?
|
||
bhis 1b / no? try again
|
||
mov r3,8.(r0) / yes? then r0 has small text address
|
||
mov r0,r3 / now r3 again points to first proc
|
||
br 0b / next descriptor
|
||
|
||
2: mov 8.(r1),r2 / follow link to compare with 2(r0)
|
||
beq 3f / if 0 then no link defined
|
||
cmp 2(r0),2(r2) / compare start addresses
|
||
blo 3f / r0 between r1 and r2
|
||
mov r2,r1 / r0 above r2,
|
||
br 2b / look again.
|
||
|
||
3: mov r0,8.(r1) / link of r1 points to r0
|
||
mov r2,8.(r0) / link of r0 points to r2
|
||
br 0b / next descriptor
|
||
|
||
4: mov r3,firstp / firstp links to first procedure
|
||
|
||
procinf:
|
||
mov $1,maxcount / countptr for first proc
|
||
mov r3,r4 / points to first proc
|
||
|
||
0: mov r3,-(sp) / stack current procedure
|
||
mov $-1,r1 / minimal line number 0177777
|
||
clr r5 / maximum line number on 0
|
||
mov 8.(r3),r4 / bottom address next descriptor
|
||
beq 6f / if 0 last procedure
|
||
mov 2(r4),r4 / top of current procedure
|
||
br 2f / start looking for lines
|
||
6: mov pd,r4 / top of last procedure
|
||
2:
|
||
mov 2(r3),r3 / start text address procedure
|
||
8: movb (r3)+,r2 / first opcode for scanning
|
||
cmp $-2,r2 / case escape
|
||
beq 1f / escape treated at label 1
|
||
cmp $-106.,r2 / case lni
|
||
blt 7f / ordinary skip at label 7
|
||
beq 2f / lni treated at label 2
|
||
cmp $-108.,r2 / case lin.l
|
||
bgt 7f / ordinary skip at label 7
|
||
beq 3f / lin.l at label 3
|
||
clr r0 / lin.s0 treated here
|
||
bisb (r3)+,r0 / line number in r0
|
||
br 4f / compares at label 4
|
||
2: inc r0 / lni increases line number
|
||
br 4f / compares at label 4
|
||
3: jsr pc,wrdoff / get 2 byte number
|
||
4:
|
||
cmp r1,r0 / look if r0 less than minimum
|
||
blo 5f / nothing to declare
|
||
mov r0,r1 / r0 new minimum
|
||
5: cmp r0,r5 / look if r0 more than maximum
|
||
blo 9f / nothing spectacular
|
||
mov r0,r5 / r0 new maximum
|
||
br 9f / line processed
|
||
|
||
1: clr r2
|
||
bisb (r3)+,r2 / escaped instruction opcode
|
||
add $128.,r2 / ready for table entry
|
||
7: movb skipdisp(r2),r2 / skip the required number of bytes
|
||
add r2,r3
|
||
|
||
9: cmp r3,r4 / still more text in this proc?
|
||
blt 8b / yes? again
|
||
filpd:
|
||
mov (sp)+,r3 / get bottom descriptor back
|
||
sub r1,r5 / number of lines encountered
|
||
bcs 9f / no lines then no file information
|
||
mov maxcount,4(r3) / this is the count pointer
|
||
mov r1,6(r3) / minimum line in descriptor
|
||
inc r5
|
||
add r5,maxcount / this is the new maximum
|
||
9: mov 8.(r3),r3 / follow link to next procedure
|
||
bne 0b / restart
|
||
.data
|
||
.byte 2; .byte 2; .byte 0; .byte 0; .byte 1; .byte 1; .byte 1; .byte 0;
|
||
.byte 0; .byte 2; .byte 1; .byte 0; .byte 1; .byte 0; .byte 0; .byte 1;
|
||
.byte 1; .byte 1; .byte 0; .byte 0; .byte 2; .byte 1; .byte 0; .byte 2;
|
||
.byte 0; .byte 1; .byte 1; .byte 2; .byte 1; .byte 1; .byte 1; .byte 1;
|
||
.byte 1; .byte 2; .byte 0; .byte 0; .byte 0; .byte 0; .byte 1; .byte 2;
|
||
.byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 1; .byte 2; .byte 2;
|
||
.byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0;
|
||
.byte 0; .byte 0; .byte 0; .byte 0; .byte 1; .byte 1; .byte 0; .byte 0;
|
||
|
||
.byte 0; .byte 1; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 1;
|
||
.byte 0; .byte 0; .byte 1; .byte 0; .byte 0; .byte 1; .byte 1; .byte 1;
|
||
.byte 1; .byte 0; .byte 2; .byte 1; .byte 1; .byte 1; .byte 2; .byte 0;
|
||
.byte 0; .byte 1; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 1;
|
||
.byte 2; .byte 2; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0;
|
||
.byte 0; .byte 1; .byte 0; .byte 0; .byte 0; .byte 0; .byte 2; .byte 1;
|
||
.byte 1; .byte 1; .byte 1; .byte 1; .byte 1; .byte 1; .byte 1; .byte 1;
|
||
.byte 2; .byte 1; .byte 0; .byte 0; .byte 1; .byte 2; .byte 7; .byte 5;
|
||
|
||
skipdisp:
|
||
.byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0;
|
||
.byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0;
|
||
.byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0;
|
||
.byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0;
|
||
.byte 0; .byte 0; .byte 0; .byte 1; .byte 0; .byte 0; .byte 2; .byte 0;
|
||
.byte 0; .byte 1; .byte 1; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0;
|
||
.byte 0; .byte 0; .byte 1; .byte 2; .byte 1; .byte 1; .byte 1; .byte 1;
|
||
.byte 1; .byte 1; .byte 1; .byte 2; .byte 1; .byte 1; .byte 1; .byte 1;
|
||
|
||
.byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0;
|
||
.byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0;
|
||
.byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0; .byte 0;
|
||
.byte 0; .byte 0; .byte 0; .byte 0; .byte 1; .byte 0; .byte 0; .byte 0;
|
||
.byte 1; .byte 0; .byte 0; .byte 0; .byte 1; .byte 0; .byte 0; .byte 0;
|
||
.byte 1; .byte 1; .byte 0; .byte 1; .byte 0; .byte 2; .byte 0; .byte 2;
|
||
.byte 1; .byte 0; .byte 0; .byte 0; .byte 1; .byte 1; .byte 0; .byte 1;
|
||
.byte 2; .byte 1; .byte 1; .byte 1; .byte 1; .byte 1; .byte 1; .byte 1;
|
||
|
||
/escaped opcodes
|
||
|
||
.byte 2; .byte 0; .byte 2; .byte 0; .byte 2; .byte 0; .byte 2; .byte 0;
|
||
.byte 2; .byte 0; .byte 2; .byte 0; .byte 2; .byte 2; .byte 0; .byte 2;
|
||
.byte 2; .byte 2; .byte 2; .byte 2; .byte 0; .byte 2; .byte 2; .byte 0;
|
||
.byte 2; .byte 0; .byte 0; .byte 0; .byte 2; .byte 0; .byte 2; .byte 0;
|
||
.byte 2; .byte 0; .byte 2; .byte 0; .byte 2; .byte 0; .byte 2; .byte 0;
|
||
.byte 2; .byte 0; .byte 0; .byte 0; .byte 0; .byte 2; .byte 2; .byte 2;
|
||
.byte 2; .byte 2; .byte 0; .byte 2; .byte 0; .byte 2; .byte 0; .byte 2;
|
||
.byte 0; .byte 2; .byte 0; .byte 2; .byte 0; .byte 2; .byte 2; .byte 2;
|
||
|
||
.byte 0; .byte 2; .byte 0; .byte 2; .byte 0; .byte 2; .byte 2; .byte 2;
|
||
.byte 2; .byte 2; .byte 2; .byte 2; .byte 0; .byte 2; .byte 0; .byte 1;
|
||
.byte 2; .byte 2; .byte 2; .byte 2; .byte 0; .byte 2; .byte 0; .byte 2;
|
||
.byte 0; .byte 0; .byte 2; .byte 0; .byte 2; .byte 0; .byte 0; .byte 2;
|
||
.byte 0; .byte 2; .byte 2; .byte 0; .byte 2; .byte 0; .byte 2; .byte 0;
|
||
.byte 2; .byte 0; .byte 0; .byte 2; .byte 0; .byte 2; .byte 0; .byte 2;
|
||
.byte 0; .byte 2; .byte 0; .byte 2; .byte 0; .byte 2; .byte 2; .byte 2;
|
||
.byte 2; .byte 2; .byte 0; .byte 0; .byte 2; .byte 2; .byte 0; .byte 2;
|
||
|
||
.byte 0; .byte 2; .byte 0; .byte 2; .byte 0; .byte 2; .byte 0; .byte 2;
|
||
.byte 2; .byte 0; .byte 1; .byte 0; .byte 0; .byte 0; .byte 2; .byte 0;
|
||
.byte 2; .byte 0; .byte 2; .byte 2; .byte 2; .byte 2; .byte 2; .byte 2;
|
||
.byte 0; .byte 2; .byte 0; .byte 1; .byte 2; .byte 0; .byte 0; .byte 2;
|
||
.text
|
||
mov globmax,r3 / bottom of table space
|
||
mov r3,r5 / copy
|
||
.if .prof
|
||
mov r3,ltime / set up pointer to base
|
||
mov r3,hiprof
|
||
mov r3,loprof
|
||
add $2,loprof
|
||
mov maxcount,r0 / number of lines
|
||
inc r0
|
||
asl r0 / four byter per prof count
|
||
asl r0
|
||
add r0,r3
|
||
mov r0,profsiz
|
||
.endif
|
||
.if .flow
|
||
mov r3,lflow / set up pointer to base
|
||
mov maxcount,r0
|
||
ash $-3,r0 / divide by 8
|
||
add $2,r0
|
||
bic $1,r0 / Rounded up to an integral number of words
|
||
add r0,r3
|
||
mov r0,flowsiz
|
||
.endif
|
||
.if .count
|
||
mov r3,lcount / set up pointer
|
||
mov maxcount,r0
|
||
inc r0
|
||
ash $2,r0 / multiply by 4
|
||
add r0,r3
|
||
mov r0,countsiz
|
||
.endif
|
||
mov r3,tblmax
|
||
cmp r3,sybreak+2 / core available for tables?
|
||
blos 2f
|
||
mov r3,sybreak+2
|
||
sys indir;sybreak / ask for core
|
||
2: sub r5,r3 / this amount of space required
|
||
asr r3
|
||
2: clr (r5)+ / clear table space
|
||
sob r3,2b
|
||
.endif
|
||
.if [1 - .count] * [1 - .flow] * [1 - .prof]
|
||
mov globmax,tblmax
|
||
.endif
|
||
|
||
/ start calling sequence here
|
||
calseq:
|
||
mov tblmax,hp
|
||
mov pd,r3 / top of em-text and top of stack
|
||
clr r2 / are dummy return values
|
||
mov environ,-(sp) / setup environment pointer
|
||
mov argv,-(sp) / setup argument pointer
|
||
mov *argv,*filb / setup first file message
|
||
mov argc,-(sp) / setup argument count
|
||
mov entry.,-(sp) / start procedure to call
|
||
precal:
|
||
mov $loop,r4 / main loop address in r4
|
||
jbr cai.z / according to the cai
|
||
|
||
noarg: mov r0,argv
|
||
mov $0f,r0; jbr rude_error
|
||
badarg: mov $1f,r0; jbr rude_error
|
||
toolarge:mov $2f,r0; jbr rude_error
|
||
|
||
|
||
.data
|
||
0: <no load file\0>
|
||
1: <load file error\0>
|
||
2: <program too large\0>
|
||
.even
|
||
.text
|
||
|
||
|
||
dofloat:
|
||
jsr pc,atof
|
||
mov r5,r3 / restore r3
|
||
/ Assumed that the result is 8
|
||
/ bytes Recall r2 and move the
|
||
/ amount of bytes asked for
|
||
clr r1 / restore for opcode
|
||
sub $8.,r2 / 8 bytes?
|
||
beq 1f / yes! later, 4 bytes next
|
||
movfo fr0,-(sp) / push result
|
||
mov (sp)+,(r3)+ / write result in data
|
||
mov (sp)+,(r3)+ / idem
|
||
jbr datloop / next loop
|
||
1: movf fr0,-(sp) / push result
|
||
mov (sp)+,(r3)+ / write result in data
|
||
mov (sp)+,(r3)+ / write result in data
|
||
mov (sp)+,(r3)+ / write result in data
|
||
mov (sp)+,(r3)+ / write result in data
|
||
jbr datloop
|
||
atof:
|
||
mov r2,-(sp) / save byte count
|
||
clr -(sp)
|
||
clrf fr0
|
||
clr r2
|
||
1:
|
||
movb (r4)+,r0 / get byte
|
||
cmp $' ,r0
|
||
bge 1b
|
||
cmpb r0,$'+
|
||
beq 1f
|
||
cmpb r0,$'-
|
||
bne 2f
|
||
inc (sp)
|
||
1:
|
||
movb (r4)+,r0 / get next byte
|
||
2:
|
||
sub $'0,r0
|
||
cmp r0,$9.
|
||
bhi 2f
|
||
jsr pc,digit
|
||
br 1b
|
||
inc r2
|
||
br 1b
|
||
2:
|
||
cmpb r0,$'.-'0
|
||
bne 2f
|
||
1:
|
||
movb (r4)+,r0 / get next byte
|
||
sub $'0,r0
|
||
cmp r0,$9.
|
||
bhi 2f
|
||
jsr pc,digit
|
||
dec r2
|
||
br 1b
|
||
2:
|
||
cmpb r0,$'E-'0
|
||
beq 3f
|
||
cmpb r0,$'e-'0
|
||
bne 1f
|
||
3:
|
||
clr r3
|
||
clr r1
|
||
movb (r4)+,r0 / get next byte
|
||
cmpb r0,$'+
|
||
beq 3f
|
||
cmpb r0,$'-
|
||
bne 5f
|
||
inc r3
|
||
3:
|
||
movb (r4)+,r0 / get next byte
|
||
5:
|
||
sub $'0,r0
|
||
cmp r0,$9.
|
||
bhi 3f
|
||
mul $10.,r1
|
||
add r0,r1
|
||
br 3b
|
||
3:
|
||
tst r3
|
||
bne 3f
|
||
neg r1
|
||
3:
|
||
sub r1,r2
|
||
1:
|
||
movf $one,fr1
|
||
movf $one,fr2
|
||
mov r2,-(sp)
|
||
beq 2f
|
||
bgt 1f
|
||
neg r2
|
||
1:
|
||
mulf $twohalf,fr1
|
||
mulf $four,fr2
|
||
sob r2,1b
|
||
2:
|
||
tst (sp)+
|
||
bge 1f
|
||
divf fr1,fr0
|
||
divf fr2,fr0
|
||
br 2f
|
||
1:
|
||
mulf fr1,fr0
|
||
mulf fr2,fr0
|
||
2:
|
||
tst (sp)+
|
||
beq 1f
|
||
negf fr0
|
||
1: mov (sp)+,r2
|
||
rts pc
|
||
|
||
|
||
digit:
|
||
cmpf $big,fr0
|
||
cfcc
|
||
blt 1f
|
||
mulf $ten,fr0
|
||
movif r0,fr1
|
||
addf fr1,fr0
|
||
rts pc
|
||
1:
|
||
add $2,(sp)
|
||
rts pc
|
||
/
|
||
/
|
||
one = 40200
|
||
twohalf = 40440
|
||
four = 40600
|
||
ten = 41040
|
||
big = 56200
|
||
huge = 77777
|
||
|
||
|
||
/------------------------------------------------------------------------------
|
||
/------------------------------------------------------------------------------
|
||
/ Main loop of interpreter starts here
|
||
/------------------------------------------------------------------------------
|
||
|
||
loop:
|
||
movb (pcx)+,r0 / pickup opcode + sign extend
|
||
9: asl r0 / opcode now -256 .. 254 & even
|
||
|
||
.if .opfreq
|
||
mov r0,r1
|
||
asl r1 / multiply by two again
|
||
add $1,counttab+514.(r1) / cannot be inc
|
||
adc counttab+512.(r1) / double precision counters
|
||
.endif
|
||
.if .prof
|
||
add timeinf(r0),*loprof
|
||
adc *hiprof / double precision
|
||
.endif
|
||
mov dispat(r0),pc / fast dispatch
|
||
|
||
/------------------------------------------------------------------------------
|
||
/ Two byte opcodes come here for decoding of second byte
|
||
/------------------------------------------------------------------------------
|
||
|
||
escape1:
|
||
clr r0
|
||
bisb (pcx)+,r0 / fetch second byte no sign extend
|
||
asl r0 / 0 to 512 & even
|
||
cmp $0500,r0 / look for righ range
|
||
jlt e.illins
|
||
|
||
.if .opfreq
|
||
mov r0,r1
|
||
asl r1 / multiply by two again
|
||
add $1,counttab+1026.(r1) / cannot be inc
|
||
adc counttab+1024.(r1) / double precision counters
|
||
.endif
|
||
.if .prof
|
||
add time2inf(r0),*loprof
|
||
adc *hiprof / double precision
|
||
.endif
|
||
mov dispae1(r0),pc / fast dispatch
|
||
|
||
/----------------------------------------------------------------------------
|
||
escape2:
|
||
movb (pcx)+,r0 / fetch second byte and sign extend
|
||
jne e.illins
|
||
|
||
.if .opfreq
|
||
add $1,counttab+1666. / cannot be inc
|
||
adc counttab+1664. / double precision counters
|
||
.endif
|
||
jbr loc.f / fast dispatch
|
||
/------------------------------------------------------------------------------
|
||
/ dispatch tables, first the unescaped opcodes
|
||
/
|
||
/ name convention is as follows:
|
||
/ each execution routine has as a name the name of the instruction
|
||
/ followed by a dot and a suffix.
|
||
/ suffix can be an integer (sometimes followed by a W),
|
||
/ an 's'or a 'w', followed by an integer, an 'l' ,a 'p' ,
|
||
/ a 'n', sometimes followed by a 'w', or a 'z'.
|
||
/ loc.1 routine to execute loc 1
|
||
/ zge.s0 routine to execute zge 0 thru 255
|
||
/ lae.w1 routine to execute lae 1024 thru lae 2046
|
||
/ lof.2W routine to execute lof 2*the word size
|
||
/ lol.pw routine to execute positive lol instructions
|
||
/ loe.l routine to execute all loe instructions
|
||
/ add.z routine to execute instruction without operand
|
||
/ or with operand on the stack.
|
||
/------------------------------------------------------------------------------
|
||
.data
|
||
|
||
|
||
|
||
lal.p; lal.n; lal.0; lal._1; lal.w0; lal.w_1; lal.w_2; lar.1W
|
||
ldc.0; lde.lw; lde.w0; ldl.0; ldl.w_1; lfr.1W; lfr.2W; lfr.s0
|
||
lil.w_1; lil.w0; lil.0; lil.1W; lin.l; lin.s0; lni.z; loc.l
|
||
loc._1; loc.s0; loc.s_1; loe.lw; loe.w0; loe.w1; loe.w2; loe.w3
|
||
loe.w4; lof.l; lof.1W; lof.2W; lof.3W; lof.4W; lof.s0; loi.l
|
||
loi.1; loi.1W; loi.2W; loi.3W; loi.4W; loi.s0; lol.pw; lol.nw
|
||
lol.0; lol.1W; lol.2W; lol.3W; lol._1W; lol._2W; lol._3W; lol._4W
|
||
lol._5W; lol._6W; lol._7W; lol._8W; lol.w0; lol.w_1; lxa.1; lxl.1
|
||
lxl.2; mlf.s0; mli.1W; mli.2W; rck.1W; ret.0; ret.1W; ret.s0
|
||
rmi.1W; sar.1W; sbf.s0; sbi.1W; sbi.2W; sdl.w_1; set.s0; sil.w_1
|
||
sil.w0; sli.1W; ste.lw; ste.w0; ste.w1; ste.w2; stf.l; stf.1W
|
||
stf.2W; stf.s0; sti.1; sti.1W; sti.2W; sti.3W; sti.4W; sti.s0
|
||
stl.pw; stl.nw; stl.0; stl.1W; stl._1W; stl._2W; stl._3W; stl._4W
|
||
stl._5W; stl.w_1; teq.z; tgt.z; tlt.z; tne.z; zeq.l; zeq.s0
|
||
zeq.s1; zer.s0; zge.s0; zgt.s0; zle.s0; zlt.s0; zne.s0; zne.s_1
|
||
zre.lw; zre.w0; zrl._1W; zrl._2W; zrl.w_1; zrl.nw; escape1; escape2
|
||
|
||
|
||
dispat: / dispatch table for unescaped opcodes
|
||
|
||
|
||
loc.0; loc.1; loc.2; loc.3; loc.4; loc.5; loc.6; loc.7
|
||
loc.8; loc.9; loc.10; loc.11; loc.12; loc.13; loc.14; loc.15
|
||
loc.16; loc.17; loc.18; loc.19; loc.20; loc.21; loc.22; loc.23
|
||
loc.24; loc.25; loc.26; loc.27; loc.28; loc.29; loc.30; loc.31
|
||
loc.32; loc.33; aar.1W; adf.s0; adi.1W; adi.2W; adp.l ; adp.1
|
||
adp.2; adp.s0; adp.s_1; ads.1W; and.1W; asp.1W; asp.2W; asp.3W
|
||
asp.4W; asp.5W; asp.w0; beq.l; beq.s0; bge.s0; bgt.s0; ble.s0
|
||
blm.s0; blt.s0; bne.s0; bra.l; bra.s_1; bra.s_2; bra.s0; bra.s1
|
||
cal.1; cal.2; cal.3; cal.4; cal.5; cal.6; cal.7; cal.8
|
||
cal.9; cal.10; cal.11; cal.12; cal.13; cal.14; cal.15; cal.16
|
||
cal.17; cal.18; cal.19; cal.20; cal.21; cal.22; cal.23; cal.24
|
||
cal.25; cal.26; cal.27; cal.28; cal.s0; cff.z; cif.z; cii.z
|
||
cmf.s0; cmi.1W; cmi.2W; cmp.z; cms.s0; csa.1W; csb.1W; dec.z
|
||
dee.w0; del.w_1; dup.1W; dvf.s0; dvi.1W; fil.l; inc.z; ine.lw
|
||
ine.w0; inl._1W; inl._2W; inl._3W; inl.w_1; inn.s0; ior.1W; ior.s0
|
||
lae.l; lae.w0; lae.w1; lae.w2; lae.w3; lae.w4; lae.w5; lae.w6
|
||
|
||
|
||
|
||
/------------------------------------------------------------------------------
|
||
/ now dispatch table for escaped opcodes
|
||
/------------------------------------------------------------------------------
|
||
|
||
dispae1: /dispatch escaped opcodes 1
|
||
|
||
aar.l; aar.z; adf.l; adf.z; adi.l; adi.z; ads.l; ads.z
|
||
adu.l; adu.z; and.l; and.z; asp.lw; ass.l; ass.z; bge.l
|
||
bgt.l; ble.l; blm.l; bls.l; bls.z; blt.l; bne.l; cai.z
|
||
cal.l; cfi.z; cfu.z; ciu.z; cmf.l; cmf.z; cmi.l; cmi.z
|
||
cms.l; cms.z; cmu.l; cmu.z; com.l; com.z; csa.l; csa.z
|
||
csb.l; csb.z; cuf.z; cui.z; cuu.z; dee.lw; del.pw; del.nw
|
||
dup.l; dus.l; dus.z; dvf.l; dvf.z; dvi.l; dvi.z; dvu.l
|
||
dvu.z; fef.l; fef.z; fif.l; fif.z; inl.pw; inl.nw; inn.l
|
||
inn.z; ior.l; ior.z; lar.l; lar.z; ldc.l; ldf.l; ldl.pw
|
||
ldl.nw; lfr.l; lil.pw; lil.nw; lim.z; los.l; los.z; lor.s0
|
||
lpi.l; lxa.l; lxl.l; mlf.l; mlf.z; mli.l; mli.z; mlu.l
|
||
mlu.z; mon.z; ngf.l; ngf.z; ngi.l; ngi.z; nop.z; rck.l
|
||
rck.z; ret.l; rmi.l; rmi.z; rmu.l; rmu.z; rol.l; rol.z
|
||
ror.l; ror.z; rtt.z; sar.l; sar.z; sbf.l; sbf.z; sbi.l
|
||
sbi.z; sbs.l; sbs.z; sbu.l; sbu.z; sde.l; sdf.l; sdl.pw
|
||
sdl.nw; set.l; set.z; sig.z; sil.pw; sil.nw; sim.z; sli.l
|
||
|
||
|
||
|
||
|
||
|
||
|
||
sli.z; slu.l; slu.z; sri.l; sri.z; sru.l; sru.z; sti.l
|
||
sts.l; sts.z; str.s0; tge.z; tle.z; trp.z; xor.l; xor.z
|
||
zer.l; zer.z; zge.l; zgt.l; zle.l; zlt.l; zne.l; zrf.l
|
||
zrf.z; zrl.pw; dch.z; exg.s0; exg.l; exg.z; lpb.z; gto.l
|
||
|
||
/------------------------------------------------------------------------------
|
||
/ timeinf tables, first the unescaped opcodes
|
||
/ these tables are parallel to the tables dispat and dispae1
|
||
/ Each entry contains a reasonable estimate of
|
||
/ the number of memory-cycles needed to
|
||
/ execute that instruction. The exact amount cannot be
|
||
/ supplied, since this can depend rather heavily on the
|
||
/ size of the object in set, array case instructions etc.
|
||
/ The table timeinf also contains, added to each entry,
|
||
/ the number of memory-cycles needed to decode the instruction.
|
||
/ This number is currently 6. The number is computed for
|
||
/ the case that all check and runinf options are off.
|
||
/------------------------------------------------------------------------------
|
||
.if .prof
|
||
23.; 23.; 12.; 12.; 18.; 17.; 19.; 61.
|
||
11.; 31.; 21.; 15.; 20.; 30.; 30.; 31.
|
||
20.; 18.; 18.; 19.; 29.; 18.; 13.; 20.
|
||
10.; 14.; 13.; 27.; 20.; 20.; 20.; 20.
|
||
20.; 23.; 16.; 16.; 16.; 16.; 17.; 38.
|
||
14.; 26.; 26.; 26.; 26.; 28.; 26.; 25.
|
||
11.; 11.; 11.; 11.; 11.; 11.; 11.; 11.
|
||
11.; 11.; 11.; 11.; 16.; 16.; 26.; 24.
|
||
|
||
24.; 53.; 25.; 25.; 18.; 27.; 44.; 54.
|
||
30.; 59.; 53.; 21.; 28.; 19.; 51.; 18.
|
||
18.; 21.; 27.; 19.; 20.; 18.; 25.; 16.
|
||
16.; 15.; 12.; 24.; 24.; 24.; 24.; 25.
|
||
26.; 25.; 15.; 13.; 11.; 11.; 11.; 11.
|
||
11.; 16.; 14.; 14.; 14.; 14.; 20.; 16.
|
||
16.; 21.; 16.; 16.; 16.; 16.; 16.; 16.
|
||
26.; 16.; 10.; 10.; 15.; 24.; 10.; 40.
|
||
|
||
timeinf:
|
||
|
||
9.; 10.; 10.; 10.; 10.; 10.; 10.; 10.
|
||
10.; 10.; 10.; 10.; 10.; 10.; 10.; 10.
|
||
10.; 10.; 10.; 10.; 10.; 10.; 10.; 10.
|
||
10.; 10.; 10.; 10.; 10.; 10.; 10.; 10.
|
||
10.; 10.; 48.; 53.; 21.; 28.; 20.; 10.
|
||
10.; 12.; 13.; 11.; 44.; 11.; 11.; 11.
|
||
11.; 11.; 27.; 21.; 17.; 17.; 17.; 17.
|
||
81.; 17.; 17.; 21.; 12.; 12.; 11.; 12.
|
||
|
||
54.; 54.; 54.; 54.; 54.; 54.; 54.; 54.
|
||
54.; 54.; 54.; 54.; 54.; 54.; 54.; 54.
|
||
54.; 54.; 54.; 54.; 54.; 54.; 54.; 54.
|
||
54.; 54.; 54.; 54.; 54.; 41.; 49.; 37.
|
||
40.; 53.; 53.; 51.; 60.; 24.; 41.; 11.
|
||
20.; 19.; 10.; 53.; 30.; 29.; 11.; 30.
|
||
20.; 15.; 15.; 15.; 19.; 44.; 37.; 36.
|
||
25.; 19.; 19.; 19.; 19.; 19.; 19.; 19.
|
||
|
||
/------------------------------------------------------------------------------
|
||
/ time2inf table for escaped opcodes
|
||
/ cycles necessary for decoding is already accounted for in timeinf
|
||
/------------------------------------------------------------------------------
|
||
|
||
time2inf:
|
||
|
||
57.; 46.; 61.; 50.; 37.; 26.; 30.; 19.
|
||
45.; 34.; 52.; 41.; 37.; 42.; 31.; 21.
|
||
21.; 21.; 91.; 108.; 97.; 21.; 21.; 53.
|
||
60.; 56.; 55.; 26.; 53.; 42.; 62.; 51.
|
||
72.; 61.; 72.; 61.; 38.; 27.; 40.; 29.
|
||
53.; 46.; 54.; 38.; 23.; 30.; 30.; 28.
|
||
36.; 45.; 34.; 61.; 50.; 39.; 28.; 44.
|
||
33.; 68.; 57.; 68.; 57.; 30.; 28.; 54.
|
||
|
||
45.; 44.; 33.; 70.; 59.; 22.; 27.; 28.
|
||
29.; 37.; 28.; 27.; 11.; 47.; 40.; 21.
|
||
20.; 35.; 33.; 61.; 50.; 34.; 23.; 39.
|
||
28.; 500.; 47.; 36.; 41.; 30.; 100.; 38.
|
||
27.; 62.; 39.; 28.; 44.; 33.; 88.; 77.
|
||
92.; 81.; 32.; 68.; 57.; 61.; 50.; 37.
|
||
26.; 33.; 22.; 45.; 34.; 29.; 28.; 30.
|
||
28.; 61.; 52.; 16.; 28.; 27.; 11.; 30.
|
||
|
||
19.; 36.; 25.; 32.; 21.; 36.; 25.; 31.
|
||
39.; 32.; 32.; 14.; 14.; 117.; 45.; 34.
|
||
31.; 22.; 20.; 20.; 20.; 20.; 20.; 27.
|
||
16.; 26.; 17.; 39.; 47.; 36.; 10.; 29.
|
||
.endif
|
||
.text
|
||
/------------------------------------------------------------------------------
|
||
/ LOAD CONSTANT, LOAD LOCAL, STORE LOCAL
|
||
/------------------------------------------------------------------------------
|
||
|
||
loc.0: clr -(sp)
|
||
next
|
||
loc.1: loc.2: loc.3: loc.4: loc.5: loc.6: loc.7: loc.8:
|
||
loc.9: loc.10: loc.11: loc.12: loc.13: loc.14: loc.15: loc.16:
|
||
loc.17: loc.18: loc.19: loc.20: loc.21: loc.22: loc.23: loc.24:
|
||
loc.25: loc.26: loc.27: loc.28: loc.29: loc.30: loc.31: loc.32:
|
||
loc.33:
|
||
asr r0 / make multiplication undone
|
||
mov r0,-(sp)
|
||
next
|
||
loc._1:
|
||
mov $-1,-(sp)
|
||
next
|
||
loc.s0:
|
||
clr r0
|
||
br 2f
|
||
loc.s_1:
|
||
mov $-400,r0
|
||
2: bisb (pcx)+,r0
|
||
mov r0,-(sp)
|
||
next
|
||
lpi.l: / let op, dit is een pointer
|
||
/ zonder offset op het moment!
|
||
loc.l:
|
||
jsr pc,wrdoff
|
||
mov r0,-(sp)
|
||
next
|
||
ldc.0:
|
||
clr -(sp)
|
||
clr -(sp)
|
||
next
|
||
ldc.l:
|
||
jsr pc,wrdoff
|
||
mov r0,-(sp)
|
||
sxt -(sp)
|
||
next
|
||
|
||
loc.f: jsr pc,wrdoff; mov r0,r1
|
||
jsr pc,wrdoff; mov r0,-(sp)
|
||
mov r1,-(sp); next
|
||
|
||
/__________________________________________________________________________
|
||
|
||
lol.0: mov 010(r2),-(sp); next
|
||
lol.1W: mov 012(r2),-(sp); next
|
||
lol.2W: mov 014(r2),-(sp); next
|
||
lol.3W: mov 016(r2),-(sp); next
|
||
lol._1W: mov -02(r2),-(sp); next
|
||
lol._2W: mov -04(r2),-(sp); next
|
||
lol._3W: mov -06(r2),-(sp); next
|
||
lol._4W: mov -010(r2),-(sp); next
|
||
lol._5W: mov -012(r2),-(sp); next
|
||
lol._6W: mov -014(r2),-(sp); next
|
||
lol._7W: mov -016(r2),-(sp); next
|
||
lol._8W: mov -020(r2),-(sp); next
|
||
|
||
lol.w0: clr r0; bisb (pcx)+,r0
|
||
5: asl r0; add r2,r0
|
||
mov 010(r0),-(sp); next
|
||
lol.w_1: mov $-400,r0; bisb (pcx)+,r0
|
||
2: asl r0; add r2,r0
|
||
mov (r0),-(sp); next
|
||
lol.pw: jsr pc,wrdoff; br 5b
|
||
lol.nw: jsr pc,wrdoff; br 2b
|
||
|
||
/------------------------------------------------------------------------------
|
||
|
||
ldl.0: mov 10.(r2),-(sp); mov 8.(r2),-(sp); next
|
||
ldl.w_1: mov $-400,r0; bisb (pcx)+,r0
|
||
2: asl r0; add r2,r0
|
||
mov 2(r0),-(sp); mov (r0),-(sp); next
|
||
ldl.pw: jsr pc,wrdoff; asl r0
|
||
add r2,r0; mov 10.(r0),-(sp)
|
||
mov 8.(r0),-(sp); next
|
||
ldl.nw: jsr pc,wrdoff; br 2b
|
||
|
||
/------------------------------------------------------------------------------
|
||
loe.lw: jsr pc,wrdoff; br 2f
|
||
loe.w0: loe.w1: loe.w2: loe.w3: loe.w4:
|
||
asr r0; add $0144,r0
|
||
swab r0; bisb (pcx)+,r0
|
||
2: asl r0; add eb,r0
|
||
mov (r0),-(sp); next
|
||
lde.lw: jsr pc,wrdoff; br 2f
|
||
lde.w0: clr r0; bisb (pcx)+,r0
|
||
2: asl r0; add eb,r0
|
||
mov 2(r0),-(sp); mov (r0),-(sp); next
|
||
|
||
|
||
/------------------------------------------------------------------------------
|
||
lil.0: clr r0; br 1f
|
||
lil.1W: mov $1,r0; br 1f
|
||
lil.pw: jsr pc,wrdoff; br 1f
|
||
lil.w0: clr r0; bisb (pcx)+,r0
|
||
1: add $04,r0
|
||
2: asl r0; add r2,r0
|
||
mov (r0),-(sp); jsr pc,chckptr
|
||
mov *(sp),(sp); next
|
||
lil.w_1: mov $-400,r0; bisb (pcx)+,r0; br 2b
|
||
lil.nw: jsr pc,wrdoff; br 2b
|
||
/------------------------------------------------------------------------------
|
||
lof.l: jsr pc,wrdoff
|
||
1: jsr pc,chckptr; add (sp)+,r0;
|
||
mov (r0),-(sp); next
|
||
|
||
lof.1W: lof.2W: lof.3W: lof.4W:
|
||
add $0276,r0;
|
||
br 1b
|
||
lof.s0: clr r0; bisb (pcx)+,r0; br 1b
|
||
ldf.l: jsr pc,wrdoff; add (sp)+,r0
|
||
mov 2(r0),-(sp); mov (r0),-(sp); next
|
||
/------------------------------------------------------------------------------
|
||
lal.p: jsr pc,wrdoff
|
||
5: add r2,r0; add $8.,r0
|
||
mov r0,-(sp); next
|
||
lal.0: mov r2,-(sp); add $8.,(sp); next
|
||
lal.w0: clr r0; bisb (pcx)+,r0
|
||
asl r0; br 5b
|
||
lal.n: jsr pc,wrdoff; br 2f
|
||
lal._1: mov $-1,r0
|
||
2: add r2,r0; mov r0,-(sp); next
|
||
lal.w_1: mov $-400,r0
|
||
3: bisb (pcx)+,r0; asl r0; br 2b
|
||
lal.w_2: mov $-1000,r0; br 3b
|
||
|
||
lae.l: jsr pc,wrdoff; br 1f
|
||
lae.w0: lae.w1: lae.w2: lae.w3: lae.w4: lae.w5: lae.w6:
|
||
asr r0
|
||
sub $0171,r0; swab r0
|
||
bisb (pcx)+,r0; asl r0
|
||
1: add eb,r0;
|
||
.if .test
|
||
cmp globmax,r0;
|
||
bhi 1f; jsr pc,e.badlae;
|
||
.endif
|
||
1: mov r0,-(sp); next
|
||
/------------------------------------------------------------------------------
|
||
lxl.1: mov $1,r0; br 1f
|
||
lxl.2: mov $2,r0; br 1f
|
||
lxl.l: jsr pc,wrdoff
|
||
bgt 1f; jlt e.oddz
|
||
mov r2,-(sp); next
|
||
1: mov r2,r1
|
||
2: mov 8(r1),r1; sob r0,2b
|
||
mov r1,-(sp); next
|
||
|
||
lxa.1: mov $1,r0; br 1f
|
||
lxa.l: jsr pc,wrdoff; bgt 1f
|
||
jlt e.oddz; mov r2,-(sp)
|
||
add $10,(sp); next
|
||
1: mov r2,r1
|
||
2: mov 8(r1),r1; sob r0,2b
|
||
add $10,r1; mov r1,-(sp); next
|
||
|
||
/------------------------------------------------------------------------------
|
||
loi.l: jsr pc,wrdoff; br 2f
|
||
loi.1W: loi.2W: loi.3W: loi.4W:
|
||
add $260,r0; br 1f
|
||
loi.s0: clr r0; bisb (pcx)+,r0
|
||
2: cmp $1,r0; beq loi.1
|
||
1: jsr pc,chckptr; mov (sp)+,r1; add r0,r1
|
||
asr r0; jcs e.oddz
|
||
1: mov -(r1),-(sp); sob r0,1b; next
|
||
loi.1: jsr pc,chckptb; mov (sp),r1; clr r0
|
||
bisb (r1),r0; mov r0,(sp); next
|
||
los.z:
|
||
mov (sp)+,r0
|
||
br 0f
|
||
los.l:
|
||
jsr pc,wrdoff
|
||
0:
|
||
cmp $04,r0
|
||
beq 4f
|
||
|
||
cmp $02,r0; beq 3f
|
||
jbr e.oddz
|
||
4: mov (sp)+,r0
|
||
3: mov (sp)+,r0; br 2b
|
||
|
||
/------------------------------------------------------------------------------
|
||
/Store group
|
||
/------------------------------------------------------------------------------
|
||
stl.pw: jsr pc,wrdoff; asl r0; br 0f
|
||
stl.0: clr r0; br 0f
|
||
stl.1W: mov $2,r0
|
||
0: add r2,r0; mov(sp)+,8.(r0); next
|
||
|
||
stl.nw: jsr pc,wrdoff; br 0f
|
||
stl.w_1: mov $-400,r0; bisb (pcx)+,r0
|
||
0: asl r0; add r2,r0
|
||
mov (sp)+,(r0); next
|
||
stl._1W: mov (sp)+,-2(r2); next
|
||
stl._2W: mov (sp)+,-4(r2); next
|
||
stl._3W: mov (sp)+,-6(r2); next
|
||
stl._4W: mov (sp)+,-10(r2); next
|
||
stl._5W: mov (sp)+,-12(r2); next
|
||
|
||
sdl.w_1: mov $-400,r0; bisb (pcx)+,r0
|
||
0: asl r0; add r2,r0
|
||
2: mov (sp)+,(r0)+; mov (sp)+,(r0); next
|
||
sdl.nw: jsr pc,wrdoff; br 0b
|
||
sdl.pw: jsr pc,wrdoff; asl r0
|
||
add r2,r0; add $8.,r0; br 2b
|
||
|
||
/------------------------------------------------------------------------------
|
||
|
||
sde.l: jsr pc,wrdoff; add eb,r0
|
||
br 2b
|
||
ste.lw: jsr pc,wrdoff; br 1f
|
||
ste.w0: clr r0; br 0f
|
||
ste.w1: mov $400,r0; br 0f
|
||
ste.w2: mov $1000,r0
|
||
0: bisb (pcx)+,r0
|
||
1: asl r0; add eb,r0
|
||
mov (sp)+,(r0); next
|
||
|
||
|
||
/------------------------------------------------------------------------------
|
||
|
||
stf.l: jsr pc,wrdoff; br 6f
|
||
stf.1W: mov $2,r0; br 6f
|
||
stf.2W: mov $4,r0; br 6f
|
||
stf.s0: clr r0; bisb (pcx)+,r0
|
||
6: add (sp)+,r0; br 7f
|
||
sdf.l: jsr pc,wrdoff; add (sp)+,r0
|
||
jbr 2b
|
||
|
||
|
||
/------------------------------------------------------------------------------
|
||
sil.w0: clr r0; bisb (pcx)+,r0
|
||
5: asl r0; add r2,r0
|
||
mov 8.(r0),r0; br 7f
|
||
sil.w_1: mov $-400,r0; bisb (pcx)+,r0
|
||
2: asl r0; add r2,r0
|
||
mov (r0),r0;
|
||
7: mov (sp),r1; mov r0,(sp);
|
||
jsr pc,chckptr; mov r1,*(sp)+; next
|
||
sil.pw: jsr pc,wrdoff; br 5b
|
||
sil.nw: jsr pc,wrdoff; br 2b
|
||
/------------------------------------------------------------------------------
|
||
sti.1: jsr pc,chckptb; mov (sp)+,r1;
|
||
movb (sp)+,(r1); next
|
||
sti.1W: sti.2W: sti.3W: sti.4W:
|
||
add $114,r0; br 1f
|
||
sti.s0: clr r0; bisb (pcx)+,r0; br 1f
|
||
sti.l: jsr pc,wrdoff
|
||
1: asr r0; beq 3f
|
||
jcs e.oddz; jsr pc,chckptr;
|
||
mov (sp)+,r1
|
||
2: mov (sp)+,(r1)+; sob r0,2b; next
|
||
3: jcs sti.1; jbr e.oddz
|
||
sts.l: jsr pc,wrdoff
|
||
0: cmp $2,r0; beq 2f
|
||
cmp $4,r0; beq 4f; jbr e.oddz
|
||
4: mov (sp)+,r0
|
||
2: mov (sp)+,r0; br 1b
|
||
sts.z: mov (sp)+,r0; br 0b
|
||
|
||
/------------------------------------------------------------------------------
|
||
/ POINTER ARITHMETIC
|
||
/------------------------------------------------------------------------------
|
||
adp.l: jsr pc,wrdoff; add r0,(sp); next
|
||
adp.1: add $1,(sp); next
|
||
adp.2: add $2,(sp); next
|
||
adp.s0: clr r0; bisb (pcx)+,r0
|
||
add r0,(sp); next
|
||
adp.s_1: mov $-400,r0; bisb (pcx)+,r0
|
||
add r0,(sp); next
|
||
ads.l: jsr pc,wrdoff; br 0f
|
||
ads.z: mov (sp)+,r0
|
||
0: cmp $1,r0; beq 1f
|
||
asr r0; jcs e.oddz
|
||
2: mov (sp)+,r1; sob r0,2b
|
||
add r1,(sp); next
|
||
ads.1W: mov (sp)+,r1; add r1,(sp); next
|
||
1: movb (sp)+,r1
|
||
add r1,(sp); next
|
||
sbs.l: jsr pc,wrdoff; br 0f
|
||
sbs.z: mov (sp)+,r0
|
||
0: mov (sp)+,r1; sub r1,(sp)
|
||
beq 0f; mov $-1,r1
|
||
br 1f
|
||
0: clr r1
|
||
1: dec r0; beq 3f
|
||
dec r0; beq 2f
|
||
asr r0
|
||
4: mov r1,-(sp); sob r0,4b
|
||
2: next
|
||
3: clrb 1(sp); next
|
||
|
||
|
||
/------------------------------------------------------------------------------
|
||
/------------------------------------------------------------------------------
|
||
/ Clears, increments and decrements
|
||
/------------------------------------------------------------------------------
|
||
inc.z: mov sp,r1;
|
||
4:
|
||
.if .test
|
||
cmp (r1),$und; jne 3f;
|
||
jsr pc,e.iund; 3:
|
||
.endif
|
||
inc (r1); bvs 9f; next
|
||
inl._1W: mov r2,r1; sub $2,r1; br 4b
|
||
inl._2W: mov r2,r1; sub $4,r1; br 4b
|
||
inl._3W: mov r2,r1; sub $6,r1; br 4b
|
||
inl.w_1: mov $-400,r0; bisb (pcx)+,r0;
|
||
1: asl r0; mov r2,r1;
|
||
add r0,r1; br 4b
|
||
inl.pw: jsr pc,wrdoff; add $4,r0;
|
||
br 1b; / !! proc frame 4 words
|
||
inl.nw: jsr pc,wrdoff; br 1b
|
||
ine.lw: jsr pc,wrdoff; br 1f
|
||
ine.w0: clr r0; bisb (pcx)+,r0;
|
||
1: asl r0; add eb,r0;
|
||
mov r0,r1; br 4b
|
||
dec.z: mov sp,r1;
|
||
4:
|
||
.if .test
|
||
cmp (r1),$und; jne 3f;
|
||
jsr pc,e.iund; 3:
|
||
.endif
|
||
dec (r1); bvs 9f; next
|
||
del.w_1: mov $-400,r0; bisb (pcx)+,r0;
|
||
1: asl r0; mov r0,r1;
|
||
add r2,r1; br 4b
|
||
del.pw: jsr pc,wrdoff; add $4,r0;
|
||
br 1b; / !proc frame 4 words
|
||
del.nw: jsr pc,wrdoff; br 1b
|
||
dee.w0: clr r0; bisb (pcx)+,r0;
|
||
1: asl r0; add eb,r0;
|
||
mov r0,r1; br 4b
|
||
dee.lw: jsr pc,wrdoff; br 1b;
|
||
9: jsr pc,e.iovfl; next
|
||
/ jump to an error routine for integer overflow
|
||
zrl._1W: clr -2(r2); next
|
||
zrl._2W: clr -4(r2); next
|
||
zrl.w_1: mov $-400,r0; bisb (pcx)+,r0;
|
||
1: asl r0; add r2,r0;
|
||
clr (r0); next
|
||
zrl.nw: jsr pc,wrdoff; br 1b
|
||
zrl.pw: jsr pc,wrdoff; add $4,r0;
|
||
br 1b
|
||
zre.lw: jsr pc,wrdoff; br 1f
|
||
zre.w0: clr r0; bisb (pcx)+,r0;
|
||
1: asl r0; add eb,r0;
|
||
clr (r0); next
|
||
zrf.l: jsr pc,wrdoff; br 1f
|
||
zrf.z: mov (sp)+,r0;
|
||
1: asr r0;
|
||
2: clr -(sp); sob r0,2b; next
|
||
zer.s0: clr r0; bisb (pcx)+,r0;
|
||
3: bit $1,r0; jne e.illins
|
||
/ test if number of bytes is even
|
||
br 1b
|
||
zer.l: jsr pc,wrdoff; br 3b
|
||
zer.z: mov (sp)+,r0; br 3b
|
||
/------------------------------------------------------------------------------
|
||
/ LOGICAL GROUP
|
||
/------------------------------------------------------------------------------
|
||
|
||
and.1W: mov $1,r1; mov $2,r0;
|
||
br lbland;
|
||
and.l: jsr pc,wrdoff; br 0f
|
||
and.z: mov (sp)+,r0;
|
||
0: ble 9f; mov r0,r1;
|
||
asr r1; bcs 9f;
|
||
lbland: add sp,r0;
|
||
1: mov (sp)+,r5; com r5;
|
||
bic r5,(r0)+; sob r1,1b;
|
||
next
|
||
ior.1W: mov $1,r1; mov $2,r0;
|
||
br 0f
|
||
ior.s0: clr r0; bisb (pcx)+,r0;
|
||
br 0f
|
||
ior.l: jsr pc,wrdoff; br 0f
|
||
ior.z: mov (sp)+,r0;
|
||
lblior:
|
||
|
||
0: ble 9f; bit $1,r0;
|
||
bne 9f; mov r0,r1;
|
||
mov sp,r5; add r0,r5; asr r1;
|
||
1: bis (sp)+,(r5)+; sob r1,1b; next
|
||
xor.l: jsr pc,wrdoff; br 0f;
|
||
xor.z: mov (sp)+,r0;
|
||
0: ble 9f; bit $1,r0;
|
||
bne 9f; mov r0,r1;
|
||
mov sp,r5; add r0,r5; asr r1
|
||
1: mov (sp)+,r0;
|
||
xor r0,(r5)+; sob r1,1b; next
|
||
com.l: jsr pc,wrdoff; br 1f
|
||
com.z: mov (sp)+,r0;
|
||
1: bit $1,r0; bne 9f
|
||
mov r0,r1; asr r1
|
||
add sp,r0;
|
||
2: com -(r0); sob r1,2b
|
||
next
|
||
rol.l: jsr pc,wrdoff; br 3f
|
||
rol.z: mov (sp)+,r0;
|
||
3: clr r4;
|
||
mov (sp)+,r5; ash $3,r0;
|
||
div r0,r4; mov r5,r4;
|
||
bge 1f; add r0,r4;
|
||
1: ash $-3,r0; mov sp,r1;
|
||
cmp r0,$1; beq 1f;
|
||
add r0,r1; mov r1,r5;
|
||
asr r0; jcs 9f
|
||
mov r3,saver0; mov r0,r3;
|
||
4: mov r3,r0; mov r5,r1;
|
||
2: rol -(r1); sob r0,2b;
|
||
adc -2(r5); sob r4,4b;
|
||
mov saver0,r3; mov $loop,r4; next
|
||
1: rolb (r1)+; adc (r1);
|
||
sob r4,1b; mov saver1,r4; next
|
||
ror.l: jsr pc,wrdoff; neg (sp); br 3b
|
||
ror.z: mov (sp)+,r0; neg (sp); br 3b
|
||
9: jsr pc,e.oddz /error codes for odd or
|
||
/negative number of bytes
|
||
|
||
/------------------------------------------------------------------------------
|
||
/ SET GROUP
|
||
/------------------------------------------------------------------------------
|
||
|
||
set.s0: clr r0; bisb (pcx)+,r0
|
||
1:
|
||
.if .test
|
||
bgt 9f; jsr pc,e.set
|
||
9:
|
||
.endif
|
||
mov (sp)+,r1
|
||
jsr pc,settest; inc r0
|
||
asr r0; / if r0 odd choose next even
|
||
2: clr -(sp); sob r0,2b; / empty set
|
||
mov r1,r0; ash $-3,r0;
|
||
add sp,r0; bic $177770,r1;
|
||
bisb bits(r1),(r0); next
|
||
set.l: jsr pc,wrdoff; br 1b
|
||
set.z: mov (sp)+,r0; br 1b
|
||
inn.s0: clr r0; bisb (pcx)+,r0
|
||
1:
|
||
.if .test
|
||
bgt 9f; jsr pc,e.set
|
||
9:
|
||
.endif
|
||
mov sp,r5;
|
||
add r0,r5; mov (sp)+,r1;
|
||
jsr pc,settest; mov r1,r0
|
||
ash $-3,r0; add sp,r0;
|
||
clr -(sp);
|
||
bic $177770,r1; bitb bits(r1),(r0)
|
||
beq 2f; mov r5,sp;
|
||
mov $1,(sp); next
|
||
2: mov r5,sp; clr (sp); next
|
||
inn.l: jsr pc,wrdoff; br 1b
|
||
inn.z: mov (sp)+,r0; br 1b
|
||
.data
|
||
bits: .byte 1
|
||
.byte 2
|
||
.byte 4
|
||
.byte 10
|
||
.byte 20
|
||
.byte 40
|
||
.byte 100
|
||
.byte 200
|
||
.even
|
||
.text
|
||
settest: mov r0,-(sp); clc
|
||
ash $3,r0; sub r1,r0;
|
||
.if .test
|
||
bgt 3f; jsr pc,e.set
|
||
.endif
|
||
3: mov (sp)+,r0; rts pc
|
||
/------------------------------------------------------------------------------
|
||
/ ARRAY GROUP
|
||
/------------------------------------------------------------------------------
|
||
|
||
|
||
|
||
lar.1W: mov $2,r0; br 1f
|
||
lar.l: jsr pc,wrdoff; br 1f
|
||
lar.z: mov (sp)+,r0;
|
||
1: jsr pc,calcarr; clr -2(sp);
|
||
sub r5,sp; bic $1,sp;
|
||
mov sp,r0;
|
||
2: movb (r1)+,(r0)+; sob r5,2b; next
|
||
sar.1W: mov $2,r0; br 1f
|
||
sar.l: jsr pc,wrdoff; br 1f
|
||
sar.z: mov (sp)+,r0;
|
||
1: jsr pc,calcarr; mov sp,r0;
|
||
add r5,sp; inc sp;
|
||
bic $1,sp;
|
||
2: movb (r0)+,(r1)+; sob r5,2b; next
|
||
aar.1W: mov $2,r0; br 1f
|
||
aar.l: jsr pc,wrdoff; br 1f
|
||
aar.z: mov (sp)+,r0;
|
||
1: jsr pc,calcarr; mov r1,-(sp); next
|
||
|
||
calcarr: sub $02,r0; beq 0f;
|
||
jsr pc,e.oddz;
|
||
0: tst (sp)+;
|
||
mov (sp)+,r0; mov (sp)+,r1;
|
||
sub (r0)+,r1; bge 9f
|
||
jsr pc,e.array
|
||
9:
|
||
cmp (r0)+,r1; bge 9f
|
||
jsr pc,e.array
|
||
9:
|
||
mov (r0),r5;
|
||
mul r5,r1; add (sp)+,r1;
|
||
mov -010(sp),-(sp); rts pc;
|
||
|
||
|
||
|
||
/------------------------------------------------------------------------------
|
||
/--------------------------------------------------------------
|
||
/ CONVERT GROUP
|
||
/--------------------------------------------------------------
|
||
|
||
cii.z:
|
||
/ convert int to int
|
||
/ 1 byte -> ? : sign extension
|
||
mov (sp)+,r0
|
||
inc r0 / dest 1 byte = dest 1 word
|
||
bic $1,r0
|
||
.if .test
|
||
cmp (sp),$2 / if size 2 then trap for undefined
|
||
bne 7f
|
||
cmp 2(sp),$und
|
||
bne 7f
|
||
jsr pc,e.iund / this is the trap
|
||
7:
|
||
.endif
|
||
sub (sp)+,r0
|
||
0: blt 1f
|
||
asr r0
|
||
bcc 2f
|
||
movb (sp),r1
|
||
mov r1,(sp)
|
||
2: tst r0
|
||
beq 3f
|
||
tst (sp)
|
||
4: sxt -(sp)
|
||
sob r0,4b
|
||
3: next
|
||
1: sub r0,sp
|
||
.if .test
|
||
mov sp,r1
|
||
neg r0
|
||
asr r0
|
||
tst (sp)
|
||
blt 3f
|
||
5: tst -(r1)
|
||
bne 9f
|
||
sob r0,5b
|
||
next
|
||
3: cmp -(r1),$-1
|
||
bne 9f
|
||
sob r0,3b
|
||
.endif
|
||
next
|
||
/-------
|
||
cui.z: mov (sp)+,r0
|
||
sub (sp)+,r0
|
||
clr -(sp)
|
||
add $-2,r0
|
||
br 0b
|
||
cif.z:
|
||
mov (sp)+,r0
|
||
jsr pc,setfloat
|
||
mov (sp)+,r0
|
||
.if .test
|
||
cmp r0,$2 / trap if size 2 undefined integer
|
||
bne 7f
|
||
cmp (sp),$und
|
||
bne 7f
|
||
jsr pc,e.iund / trap for undefined integer
|
||
7:
|
||
.endif
|
||
jsr pc,setint
|
||
movif (sp)+,fr0
|
||
movf fr0,-(sp)
|
||
next
|
||
cuf.z:
|
||
mov (sp)+,r0
|
||
jsr pc,setfloat
|
||
mov (sp)+,r0
|
||
cmp r0,$02
|
||
bne 1b
|
||
clr -(sp)
|
||
mov $04,r0
|
||
jsr pc,setint
|
||
movif (sp)+,fr0
|
||
cfcc
|
||
bge 1f
|
||
addf fr3,fr0
|
||
1: movf fr0,-(sp)
|
||
next
|
||
/-------
|
||
cff.z:
|
||
mov (sp)+,r0
|
||
cmp (sp)+,r0
|
||
beq 1f
|
||
jsr pc,setfloat
|
||
movof (sp)+,fr0
|
||
movf fr0,-(sp)
|
||
1: next
|
||
/-------
|
||
ciu.z: mov (sp)+,r0
|
||
.if .test
|
||
cmp (sp),$2 / trap undefined of size 2
|
||
bne 7f
|
||
cmp 2(sp),$und
|
||
bne 7f
|
||
jsr pc,e.iund / this is the trap
|
||
7:
|
||
.endif
|
||
sub (sp)+,r0
|
||
asr r0
|
||
bcc 2f
|
||
clrb 1(sp)
|
||
2: tst (sp)
|
||
.if .test
|
||
jlt 9f
|
||
.endif
|
||
6: tst r0
|
||
beq 3f
|
||
blt 5f
|
||
4: clr -(sp)
|
||
sob r0,4b
|
||
3: next
|
||
9: jsr pc,e.conv; next
|
||
5: neg r0
|
||
4: tst (sp)+
|
||
.if .test
|
||
jne 9b
|
||
.endif
|
||
sob r0,4b
|
||
next
|
||
cuu.z:
|
||
mov (sp)+,r0
|
||
sub (sp)+,r0
|
||
asr r0
|
||
jbr 6b
|
||
/-------
|
||
cfu.z:
|
||
mov (sp)+,r0
|
||
jsr pc,setint
|
||
mov (sp)+,r0
|
||
jsr pc,setfloat
|
||
movf (sp)+,fr0
|
||
movfi fr0,-(sp)
|
||
.if .test
|
||
jcs 9b
|
||
jlt 9b
|
||
.endif
|
||
next
|
||
/-------
|
||
cfi.z:
|
||
mov (sp)+,r0
|
||
jsr pc,setint
|
||
mov (sp)+,r0
|
||
jsr pc,setfloat
|
||
movf (sp)+,fr0
|
||
movfi fr0,-(sp)
|
||
jcs e.conv
|
||
next
|
||
/--------------------------------------------------------------
|
||
/ INTEGER ARITHMETIC
|
||
/--------------------------------------------------------------
|
||
|
||
adi.l: jsr pc,wrdoff; br 0f
|
||
adi.z: mov (sp)+,r0
|
||
0: cmp r0,$04
|
||
bgt 1f
|
||
cmp r0,$02
|
||
bgt 2f
|
||
bne 1f
|
||
adi.1W:
|
||
.if .test
|
||
cmp (sp),$und / trap undefineds of size 2
|
||
beq 6f
|
||
cmp 2(sp),$und
|
||
bne 7f
|
||
6: jsr pc,e.iund / this is the trap
|
||
7:
|
||
.endif
|
||
add (sp)+,(sp)
|
||
.if .test
|
||
bvs 9f
|
||
.endif
|
||
next
|
||
adi.2W: 2: add (sp)+,02(sp)
|
||
.if .test
|
||
bvc 2f
|
||
jsr pc,e.iovfl
|
||
2:
|
||
.endif
|
||
add (sp)+,02(sp)
|
||
adc (sp)
|
||
.if .test
|
||
bvs 9f
|
||
.endif
|
||
|
||
next
|
||
1:
|
||
jsr pc,e.oddz ; next
|
||
/-------
|
||
sbi.l: jsr pc,wrdoff; br 0f
|
||
sbi.z: mov (sp)+,r0
|
||
0: cmp r0,$04
|
||
bgt 1b
|
||
cmp r0,$02
|
||
bgt 2f
|
||
bne 1b
|
||
sbi.1W:
|
||
.if .test
|
||
cmp (sp),$und / trap for size 2 undefineds
|
||
beq 6f
|
||
cmp 2(sp),$und
|
||
bne 7f
|
||
6: jsr pc,e.iund / this is the trap
|
||
7:
|
||
.endif
|
||
sub (sp)+,(sp)
|
||
.if .test
|
||
bvs 9f
|
||
.endif
|
||
next
|
||
sbi.2W: 2: sub (sp)+,02(sp)
|
||
.if .test
|
||
bvc 2f
|
||
jsr pc,e.iovfl
|
||
2:
|
||
.endif
|
||
sub (sp)+,02(sp)
|
||
sbc (sp)
|
||
.if .test
|
||
bvs 9f
|
||
next
|
||
9: jsr pc,e.iovfl
|
||
.endif
|
||
next
|
||
/------
|
||
mli.l: jsr pc,wrdoff; br 0f
|
||
mli.z: mov (sp)+,r0
|
||
0:
|
||
cmp r0,$04
|
||
bgt 1f
|
||
beq mli4
|
||
cmp r0,$02
|
||
bne 1f
|
||
mli.1W: mov (sp)+,r1
|
||
.if .test
|
||
cmp r1,$und / trap for undefineds of size 2
|
||
beq 6f
|
||
cmp (sp),$und
|
||
bne 7f
|
||
6: jsr pc,e.iund / this is the trap
|
||
7:
|
||
.endif
|
||
mul (sp)+,r1
|
||
.if .test
|
||
|
||
bcc 9f / overflow
|
||
jsr pc,e.iovfl
|
||
9:
|
||
.endif
|
||
mov r1,-(sp)
|
||
next
|
||
1: jmp e.oddz
|
||
/------
|
||
mli.2W: mli4:
|
||
.if .prof
|
||
add $91.,*loprof
|
||
adc *hiprof
|
||
.endif
|
||
jsr pc,regsave
|
||
tst 02(sp)
|
||
sxt r0
|
||
sub (sp),r0
|
||
tst 06(sp)
|
||
sxt r2
|
||
sub 04(sp),r2
|
||
mov r0,r4
|
||
mul r2,r4
|
||
mul 06(sp),r0
|
||
.if .test
|
||
bge 2f
|
||
inc r4
|
||
2:
|
||
.endif
|
||
mul 02(sp),r2
|
||
.if .test
|
||
bge 2f
|
||
inc r4
|
||
2: sub r2,r5
|
||
sbc r4
|
||
sub r0,r5
|
||
sbc r4
|
||
add r1,r3
|
||
sbc r5
|
||
sbc r4
|
||
.endif
|
||
mov 02(sp),r0
|
||
mul 06(sp),r0
|
||
.if .test
|
||
bge 2f
|
||
sub $1,r5
|
||
sbc r4
|
||
.endif
|
||
2: sub r3,r0
|
||
.if .test
|
||
sxt r2
|
||
sbc r5
|
||
sbc r4
|
||
cmp r2,r4
|
||
bne 2f
|
||
cmp r2,r5
|
||
beq 9f
|
||
2: jsr pc,e.iovfl
|
||
9:
|
||
.endif
|
||
add $010,sp
|
||
mov r1,-(sp);
|
||
mov r0,-(sp);
|
||
jsr pc,regretu; next
|
||
|
||
|
||
/-------
|
||
dvi.l: jsr pc,wrdoff; br 0f
|
||
dvi.z: mov (sp)+,r0
|
||
0: cmp r0,$04
|
||
bgt 1f
|
||
beq dvi4
|
||
cmp r0,$02
|
||
bne 1f
|
||
dvi.1W: mov 02(sp),r1
|
||
sxt r0
|
||
.if .test
|
||
cmp r1,$und / trap for undifined of size 2
|
||
beq 6f
|
||
cmp (sp),$und
|
||
bne 7f
|
||
6: jsr pc,e.iund / this is the trap
|
||
7:
|
||
.endif
|
||
div (sp)+,r0
|
||
jcs 9f
|
||
mov r0,(sp)
|
||
next
|
||
1: jmp e.oddz
|
||
/-------
|
||
dvi4:
|
||
.if .prof
|
||
add $100.,*loprof
|
||
adc *hiprof
|
||
.endif
|
||
jsr pc,regsave
|
||
mov 02(sp),r3
|
||
bne 1f
|
||
tst (sp)
|
||
bne 1f
|
||
9: jsr pc,e.idivz
|
||
1: sxt r4
|
||
bpl 1f
|
||
neg r3
|
||
1: cmp r4,(sp)
|
||
bne hardldiv
|
||
mov 06(sp),r2
|
||
mov 04(sp),r1
|
||
bge 2f
|
||
neg r1
|
||
neg r2
|
||
sbc r1
|
||
com r4
|
||
2: mov r4,-(sp)
|
||
clr r0
|
||
div r3,r0
|
||
mov r0,-(sp)
|
||
mov r1,r0
|
||
mov r1,r4
|
||
mov r2,r1
|
||
div r3,r0
|
||
bvc 3f
|
||
mov r2,r1
|
||
mov r4,r0
|
||
sub r3,r0
|
||
div r3,r0
|
||
tst r1
|
||
sxt r1
|
||
add r1,r0
|
||
3: mov r0,r1
|
||
mov (sp)+,r0
|
||
br 4f
|
||
hardldiv:
|
||
.if .prof
|
||
add $75.,*loprof
|
||
adc *hiprof
|
||
.endif
|
||
clr -(sp)
|
||
mov 010(sp),r2
|
||
mov 06(sp),r1
|
||
bpl 5f
|
||
com (sp)
|
||
neg r1
|
||
neg r2
|
||
sbc r1
|
||
5: clr r0
|
||
mov 02(sp),r3
|
||
bge 6f
|
||
neg r3
|
||
neg 04(sp)
|
||
sbc r3
|
||
com (sp)
|
||
6: mov $16.,r4
|
||
9: clc
|
||
rol r2
|
||
rol r1
|
||
rol r0
|
||
cmp r3,r0
|
||
bhi 7f
|
||
bcs 8f
|
||
cmp 04(sp),r1
|
||
blos 8f
|
||
7: sob r4,9b
|
||
br 1f
|
||
8: sub 04(sp),r1
|
||
sbc r0
|
||
sub r3,r0
|
||
inc r2
|
||
sob r4,9b
|
||
1:
|
||
mov r2,r1
|
||
clr r0
|
||
4: tst (sp)+
|
||
beq 1f
|
||
neg r0
|
||
neg r1
|
||
sbc r0
|
||
1: add $010,sp
|
||
mov r1,-(sp);
|
||
mov r0,-(sp);
|
||
jsr pc,regretu; next
|
||
/-------
|
||
rmi.l: jsr pc,wrdoff; br 0f
|
||
rmi.z: mov (sp)+,r0
|
||
0: cmp r0,$04
|
||
bgt 1f
|
||
beq rmi4
|
||
cmp r0,$02
|
||
bne 1f
|
||
rmi.1W: mov 02(sp),r1
|
||
sxt r0
|
||
.if .test
|
||
cmp r1,$und / trap for undefineds of size 2
|
||
beq 6f
|
||
cmp (sp),$und
|
||
bne 7f
|
||
6: jsr pc,e.iund / this is the trap
|
||
7:
|
||
.endif
|
||
div (sp)+,r0
|
||
bcs 9f
|
||
mov r1,(sp)
|
||
next
|
||
1: jmp e.oddz
|
||
/-------
|
||
rmi4:
|
||
.if .prof
|
||
add $100.,*loprof
|
||
adc *hiprof
|
||
.endif
|
||
jsr pc,regsave
|
||
mov 02(sp),r3
|
||
bne 1f
|
||
tst (sp)
|
||
bne 1f
|
||
9: jsr pc,e.idivz
|
||
1: tst r3
|
||
sxt r4
|
||
bpl 1f
|
||
neg r3
|
||
1: cmp r4,(sp)
|
||
bne hardrmi4
|
||
mov 06(sp),r2
|
||
mov 04(sp),r1
|
||
mov r1,r4
|
||
bge 2f
|
||
neg r1
|
||
neg r2
|
||
sbc r1
|
||
2: mov r4,-(sp)
|
||
clr r0
|
||
div r3,r0
|
||
mov r1,r0
|
||
mov r1,r4
|
||
mov r2,r1
|
||
div r3,r0
|
||
bvc 3f
|
||
mov r2,r1
|
||
mov r4,r0
|
||
sub r3,r0
|
||
div r3,r0
|
||
tst r1
|
||
beq 3f
|
||
add r3,r1
|
||
3: tst (sp)+
|
||
bpl 4f
|
||
neg r1
|
||
4: sxt r0
|
||
br 9f
|
||
hardrmi4:
|
||
.if .prof
|
||
add $75.,*loprof
|
||
adc *hiprof
|
||
.endif
|
||
mov 06(sp),r2
|
||
mov 04(sp),r1
|
||
bpl 5f
|
||
neg r1
|
||
neg r2
|
||
sbc r1
|
||
5: clr r0
|
||
mov (sp),r3
|
||
bge 6f
|
||
neg r3
|
||
neg 02(sp)
|
||
sbc r3
|
||
6: mov $16.,r4
|
||
1: clc
|
||
rol r2
|
||
rol r1
|
||
rol r0
|
||
cmp r3,r0
|
||
bhi 7f
|
||
bcs 8f
|
||
cmp 02(sp),r1
|
||
blos 8f
|
||
7: sob r4,1b
|
||
br 2f
|
||
8: sub 02(sp),r1
|
||
sbc r0
|
||
sub r3,r0
|
||
sob r4,1b
|
||
2: tst 04(sp)
|
||
bge 9f
|
||
neg r0
|
||
neg r1
|
||
sbc r0
|
||
9: add $010,sp
|
||
mov r1,-(sp)
|
||
mov r0,-(sp)
|
||
jsr pc,regretu; next
|
||
/-------
|
||
ngi.l: jsr pc,wrdoff; br 1f
|
||
ngi.z: mov (sp)+,r0
|
||
1:
|
||
lblngi:
|
||
cmp r0,$02
|
||
bgt 1f
|
||
.if .test
|
||
cmp (sp),$und / trap for undefineds of size 2
|
||
bne 7f
|
||
jsr pc,e.iund
|
||
7:
|
||
.endif
|
||
neg (sp)
|
||
3: next
|
||
1: cmp r0,$04
|
||
bgt 2f
|
||
mov (sp),r0
|
||
neg (sp)
|
||
mov 02(sp),r1
|
||
neg 02(sp)
|
||
sbc (sp)
|
||
cmp r0,(sp)
|
||
.if .test
|
||
bne 3b
|
||
cmp r1,02(sp)
|
||
bne 3b
|
||
2: jsr pc,e.iovfl
|
||
.endif
|
||
next
|
||
/-------
|
||
sli.l: jsr pc,wrdoff; br 0f
|
||
sli.z: mov (sp)+,r0
|
||
0: cmp r0,$02
|
||
bgt 1f
|
||
sli.1W: mov (sp)+,r1
|
||
mov (sp)+,r0
|
||
.if .test
|
||
cmp r0,$und / trap for undefined size 2
|
||
bne 7f
|
||
jsr pc,e.iund
|
||
7:
|
||
.endif
|
||
ash r1,r0
|
||
.if .test
|
||
bvc 7f
|
||
jsr pc,e.iovfl
|
||
7:
|
||
.endif
|
||
mov r0,-(sp)
|
||
next
|
||
1: cmp r0,$04
|
||
bgt 2f
|
||
mov 02(sp),r0
|
||
mov 04(sp),r1
|
||
ashc (sp)+,r0
|
||
.if .test
|
||
bvc 7f
|
||
jsr pc,e.iovfl
|
||
7:
|
||
.endif
|
||
mov r0,(sp)
|
||
mov r1,02(sp)
|
||
next
|
||
2: jmp e.oddz
|
||
/-------
|
||
sri.l: jsr pc,wrdoff; br 0f
|
||
sri.z: mov (sp)+,r0
|
||
0: cmp r0,$02
|
||
bgt 1f
|
||
mov (sp)+,r1
|
||
mov (sp)+,r0
|
||
.if .test
|
||
cmp r0,$und / trap for undefined size 2
|
||
bne 7f
|
||
jsr pc,e.iund
|
||
7:
|
||
.endif
|
||
neg r1
|
||
ash r1,r0
|
||
mov r0,-(sp)
|
||
next
|
||
1: cmp r0,$04
|
||
bgt 2f
|
||
mov 02(sp),r0
|
||
mov 04(sp),r1
|
||
neg (sp)
|
||
ashc (sp)+,r0
|
||
mov r0,(sp)
|
||
mov r1,02(sp)
|
||
next
|
||
2: jmp e.oddz
|
||
/--------------------------------------------------------------
|
||
adu.l: jsr pc,wrdoff; br 0f
|
||
adu.z: mov (sp)+,r0
|
||
0: jsr pc,tstr0; add r0,sp
|
||
mov sp,r1; add r0,sp; asr r0
|
||
2: adc -(sp); add -(r1),(sp); sob r0,2b
|
||
next
|
||
sbu.l: jsr pc,wrdoff; br 0f
|
||
sbu.z: mov (sp)+,r0
|
||
0: jsr pc,tstr0; add r0,sp
|
||
mov sp,r1; add r0,sp; asr r0;
|
||
2: sbc -(sp); sub -(r1),(sp); sob r0,2b
|
||
next
|
||
mlu.l: jsr pc,wrdoff; br 0f
|
||
mlu.z: mov (sp)+,r0
|
||
0: jsr pc,tstr0
|
||
cmp r0,$04
|
||
bgt 1f
|
||
beq mlu4
|
||
mov (sp)+,r1
|
||
mul (sp)+,r1
|
||
mov r1,-(sp)
|
||
next
|
||
1: jmp e.oddz
|
||
mlu4:
|
||
.if .prof
|
||
add $90.,*loprof
|
||
adc *hiprof
|
||
.endif
|
||
jsr pc,regsave
|
||
clr r0
|
||
mov 02(sp),r1
|
||
mov 06(sp),r3
|
||
mul r3,r0
|
||
tst r3
|
||
bge 1f
|
||
ashc $15.,r0
|
||
1: mov 02(sp),r3
|
||
clr r2
|
||
mul 04(sp),r2
|
||
add r3,r0
|
||
mov 06(sp),r3
|
||
clr r2
|
||
mul (sp),r2
|
||
add r3,r0
|
||
add $010,sp
|
||
mov r1,-(sp)
|
||
mov r0,-(sp)
|
||
jsr pc,regretu; next
|
||
9: jmp e.oddz
|
||
/-------
|
||
dvu.l: jsr pc,wrdoff; br 0f
|
||
dvu.z: mov (sp)+,r0
|
||
0:
|
||
clr saver0;
|
||
cmp r0,$04
|
||
bgt 9b
|
||
beq dvu4
|
||
clr r0
|
||
mov 02(sp),r1
|
||
tst (sp)
|
||
blt 1f
|
||
div (sp)+,r0
|
||
mov r0,(sp); next
|
||
1: mov (sp),-(sp);
|
||
clr 02(sp);
|
||
clr -(sp);
|
||
mov $1,saver0;
|
||
dvu4:
|
||
.if .prof
|
||
add $95.,*loprof
|
||
adc *hiprof
|
||
.endif
|
||
jsr pc,regsave
|
||
clr r0
|
||
tst (sp)
|
||
bne harddvu4
|
||
tst 02(sp)
|
||
blt harddvu4
|
||
mov 06(sp),r2
|
||
mov 04(sp),r1
|
||
mov 02(sp),r3
|
||
div r3,r0
|
||
mov r0,-(sp)
|
||
mov r1,r0
|
||
mov r1,r4
|
||
mov r2,r1
|
||
div r3,r0
|
||
bvc 1f
|
||
mov r2,r1
|
||
mov r4,r0
|
||
sub r3,r0
|
||
div r3,r0
|
||
tst r1
|
||
sxt r1
|
||
add r1,r0
|
||
1: mov r0,r1
|
||
mov (sp)+,r0
|
||
br 2f
|
||
harddvu4:
|
||
.if .prof
|
||
add $75.,*loprof
|
||
adc *hiprof
|
||
.endif
|
||
mov 06(sp),r2
|
||
mov 04(sp),r1
|
||
mov (sp),r3
|
||
mov $17.,r4
|
||
br 3f
|
||
6: rol r2
|
||
rol r1
|
||
rol r0
|
||
3: cmp r3,r0
|
||
bhi 4f
|
||
blo 5f
|
||
cmp 02(sp),r1
|
||
blos 5f
|
||
4: clc
|
||
sob r4,6b
|
||
br 7f
|
||
5: sub 02(sp),r1
|
||
sbc r0
|
||
sub r3,r0
|
||
sec
|
||
sob r4,6b
|
||
7: rol r2
|
||
bcc 8f
|
||
mov $01,r0
|
||
br 9f
|
||
8: clr r0
|
||
9: mov r2,r1
|
||
2: add $010,sp
|
||
mov r1,-(sp)
|
||
mov r0,-(sp)
|
||
jsr pc,regretu
|
||
tst saver0;
|
||
beq 2f;
|
||
tst (sp)+
|
||
2:
|
||
next
|
||
/-------
|
||
9: jbr e.oddz
|
||
rmu.l: jsr pc,wrdoff; br 0f
|
||
rmu.z: mov (sp)+,r0
|
||
0: clr saver0;
|
||
cmp r0,$04
|
||
bgt 9b
|
||
beq rmu4
|
||
cmp r0,$02
|
||
bne 9b
|
||
mov $1,saver0;
|
||
mov 02(sp),r1
|
||
tst (sp)
|
||
blt 1f
|
||
clr r0
|
||
div (sp)+,r0
|
||
mov r1,(sp); next
|
||
1: mov (sp),-(sp)
|
||
clr 02(sp)
|
||
clr -(sp)
|
||
rmu4:
|
||
.if .prof
|
||
add $95.,*loprof
|
||
adc *hiprof
|
||
.endif
|
||
jsr pc,regsave
|
||
clr r0
|
||
tst (sp)
|
||
bne hardrmu4
|
||
tst 02(sp)
|
||
blt hardrmu4
|
||
mov 06(sp),r2
|
||
mov 04(sp),r1
|
||
mov 02(sp),r3
|
||
div r3,r0
|
||
mov r1,r0
|
||
mov r1,r4
|
||
mov r2,r1
|
||
div r3,r0
|
||
bvc 1f
|
||
mov r2,r1
|
||
mov r4,r0
|
||
sub r3,r0
|
||
div r3,r0
|
||
tst r1
|
||
beq 1f
|
||
add r3,r1
|
||
1: clr r0
|
||
br 2f
|
||
hardrmu4:
|
||
.if .prof
|
||
add $75.,*loprof
|
||
adc *hiprof
|
||
.endif
|
||
mov 06(sp),r2
|
||
mov 04(sp),r1
|
||
mov (sp),r3
|
||
mov $17.,r4
|
||
br 3f
|
||
6: clc
|
||
rol r2
|
||
rol r1
|
||
rol r0
|
||
3: cmp r3,r0
|
||
bhi 4f
|
||
bcs 5f
|
||
cmp 02(sp),r1
|
||
blos 5f
|
||
4: sob r4,6b
|
||
br 2f
|
||
5: sub 02(sp),r1
|
||
sbc r0
|
||
sub r3,r0
|
||
sob r4,6b
|
||
2: add $010,sp
|
||
mov r1,-(sp)
|
||
mov r0,-(sp)
|
||
jsr pc,regretu
|
||
tst saver0
|
||
beq 2f;
|
||
tst (sp)+;
|
||
2: next
|
||
/-------
|
||
slu.l: jsr pc,wrdoff; br 0f
|
||
slu.z: mov (sp)+,r0
|
||
0:
|
||
cmp r0,$02
|
||
bgt 1f
|
||
mov (sp)+,r1
|
||
mov (sp)+,r0
|
||
ash r1,r0
|
||
mov r0,-(sp)
|
||
next
|
||
1: cmp r0,$04
|
||
bgt 2f
|
||
mov 02(sp),r0
|
||
mov 04(sp),r1
|
||
ashc (sp)+,r0
|
||
mov r0,(sp)
|
||
mov r1,02(sp)
|
||
next
|
||
2: jmp e.oddz
|
||
/-------
|
||
sru.l: jsr pc,wrdoff; br 0f
|
||
sru.z: mov (sp)+,r0
|
||
0:
|
||
cmp r0,$02
|
||
bgt 1f
|
||
mov 2(sp),r1
|
||
neg (sp)
|
||
clr r0
|
||
ashc (sp)+,r0
|
||
2: mov r1,-(sp)
|
||
next
|
||
1: cmp r0,$04
|
||
bgt 3f
|
||
mov 02(sp),r0
|
||
mov 04(sp),r1
|
||
neg (sp)
|
||
beq 4f
|
||
ashc $-1,r0
|
||
bic $0100000,r0
|
||
inc (sp)
|
||
beq 4f
|
||
ashc (sp)+,r0
|
||
4: mov r0,(sp)
|
||
mov r1,02(sp)
|
||
next
|
||
3: jmp e.oddz
|
||
/-------
|
||
|
||
/--------------------------------------------------------------
|
||
/ FLOATING POINT INSTRUCTIONS
|
||
/--------------------------------------------------------------
|
||
|
||
adf.s0: clr r0; bisb (pcx)+,r0; br 0f
|
||
adf.l: jsr pc,wrdoff; br 0f
|
||
adf.z: mov (sp)+,r0
|
||
0:
|
||
jsr pc,setfloat
|
||
movf (sp)+,fr0
|
||
addf (sp)+,fr0
|
||
movf fr0,-(sp)
|
||
next
|
||
/-------
|
||
|
||
sbf.s0: clr r0; bisb (pcx)+,r0; br 0f
|
||
sbf.l: jsr pc,wrdoff; br 0f
|
||
sbf.z: mov (sp)+,r0
|
||
0:
|
||
jsr pc,setfloat
|
||
movf (sp)+,fr0
|
||
subf (sp)+,fr0
|
||
negf fr0
|
||
movf fr0,-(sp)
|
||
next
|
||
/-------
|
||
|
||
mlf.s0: clr r0; bisb (pcx)+,r0; br 0f
|
||
mlf.l: jsr pc,wrdoff; br 0f
|
||
mlf.z: mov (sp)+,r0
|
||
0:
|
||
jsr pc,setfloat
|
||
movf (sp)+,fr0
|
||
mulf (sp)+,fr0
|
||
movf fr0,-(sp)
|
||
next
|
||
/-------
|
||
|
||
dvf.s0: clr r0; bisb (pcx)+,r0; br 0f
|
||
dvf.l: jsr pc,wrdoff; br 0f
|
||
dvf.z: mov (sp)+,r0
|
||
0:
|
||
jsr pc,setfloat
|
||
movf (sp)+,fr0
|
||
movf (sp)+,fr1
|
||
divf fr0,r1
|
||
movf fr1,-(sp)
|
||
next
|
||
/-------
|
||
|
||
ngf.l: jsr pc,wrdoff; br 0f
|
||
ngf.z: mov (sp)+,r0
|
||
0:
|
||
jsr pc,setfloat
|
||
negf (sp)
|
||
next
|
||
/-------
|
||
|
||
fif.l: jsr pc,wrdoff; br 0f
|
||
fif.z: mov (sp)+,r0
|
||
0:
|
||
jsr pc,setfloat
|
||
movf (sp)+,fr0
|
||
modf (sp)+,fr0
|
||
movf fr0,-(sp)
|
||
movf fr1,-(sp)
|
||
next
|
||
/-------
|
||
|
||
fef.l: jsr pc,wrdoff; br 0f
|
||
fef.z: mov (sp)+,r0
|
||
0:
|
||
jsr pc,setfloat
|
||
movf (sp),fr0
|
||
movei fr0,-(sp)
|
||
movie $0,fr0
|
||
movf fr0,02(sp)
|
||
next
|
||
/----------------------------------------------------------------------------
|
||
/ TEST AND BRANCH GROUP
|
||
/----------------------------------------------------------------------------
|
||
tlt.z: tst (sp)+; blt true; clr -(sp); next
|
||
tle.z: tst (sp)+; ble true; clr -(sp); next
|
||
teq.z: tst (sp)+; beq true; clr -(sp); next
|
||
tne.z: tst (sp)+; bne true; clr -(sp); next
|
||
tge.z: tst (sp)+; bge true; clr -(sp); next
|
||
tgt.z: tst (sp)+; bgt true; clr -(sp); next
|
||
/----------------------------------------------------------------------------
|
||
zlt.s0: tst (sp)+; blt yesbr2; br nobr2
|
||
zlt.l: tst (sp)+; blt yesbr3; br nobr3
|
||
zle.s0: tst (sp)+; ble yesbr2; br nobr2
|
||
zle.l: tst (sp)+; ble yesbr3; br nobr3
|
||
zeq.s0: tst (sp)+; beq yesbr2; br nobr2
|
||
zeq.s1: tst (sp)+; beq yesbr4; br nobr2
|
||
zeq.l: tst (sp)+; beq yesbr3; br nobr3
|
||
zne.s0: tst (sp)+; bne yesbr2; br nobr2
|
||
zne.l: tst (sp)+; bne yesbr3; br nobr3
|
||
zne.s_1: tst (sp)+; bne yesbr5; br nobr2
|
||
zge.s0: tst (sp)+; bge yesbr2; br nobr2
|
||
zge.l: tst (sp)+; bge yesbr3; br nobr3
|
||
zgt.s0: tst (sp)+; bgt yesbr2; br nobr2
|
||
zgt.l: tst (sp)+; bgt yesbr3; br nobr3
|
||
great:
|
||
true: mov $1,-(sp)
|
||
next
|
||
|
||
/------------------------------------------------------------------------------
|
||
|
||
blt.s0: cmp (sp)+,(sp)+; bgt yesbr2; br nobr2
|
||
blt.l: cmp (sp)+,(sp)+; bgt yesbr3; br nobr3
|
||
ble.s0: cmp (sp)+,(sp)+; bge yesbr2; br nobr2
|
||
ble.l: cmp (sp)+,(sp)+; bge yesbr3; br nobr3
|
||
beq.l: cmp (sp)+,(sp)+; beq yesbr3; br nobr3
|
||
beq.s0: cmp (sp)+,(sp)+; beq yesbr2; br nobr2
|
||
bne.s0: cmp (sp)+,(sp)+; bne yesbr2; br nobr2
|
||
bne.l: cmp (sp)+,(sp)+; bne yesbr3; br nobr3
|
||
bge.s0: cmp (sp)+,(sp)+; ble yesbr2; br nobr2
|
||
bge.l: cmp (sp)+,(sp)+; ble yesbr3; br nobr3
|
||
bgt.s0: cmp (sp)+,(sp)+; blt yesbr2; br nobr2
|
||
bgt.l: cmp (sp)+,(sp)+; blt yesbr3; br nobr3
|
||
|
||
bra.s0: yesbr2:
|
||
clr r0;
|
||
5: bisb (pcx)+,r0
|
||
1: add r0,pcx
|
||
next
|
||
bra.l: yesbr3:
|
||
jsr pc,wrdoff
|
||
br 1b
|
||
bra.s1: yesbr4: mov $400,r0; br 5b
|
||
bra.s_1: yesbr5: mov $-400,r0; br 5b
|
||
bra.s_2: mov $-800,r0; br 5b
|
||
nobr2: tstb (pcx)+
|
||
next
|
||
nobr3: cmpb (pcx)+,(pcx)+
|
||
next
|
||
/
|
||
/------------------------------------------------------------------------------
|
||
/ Compare group
|
||
/------------------------------------------------------------------------------
|
||
|
||
calccomp: mov (sp)+,saver1; / old pc
|
||
mov sp,r1;
|
||
add r0,r1; mov r1,r5;
|
||
add r0,r1; mov r1,saver0; / new sp
|
||
mov r0,r1; asr r1;
|
||
2: cmp (r5)+,(sp)+; blt 3f;
|
||
bgt 4f; dec r1;
|
||
beq 5f
|
||
2: cmp (r5)+,(sp)+; blo 3f;
|
||
bhi 4f; sob r1,2b;
|
||
5: mov saver0,sp; clr -(sp);
|
||
br 5f
|
||
4: mov saver0,sp; mov $1,-(sp);
|
||
br 5f
|
||
3: mov saver0,sp; mov $-1,-(sp);
|
||
br 5f
|
||
5: mov saver1,-(sp); rts pc
|
||
|
||
cmi.1W: mov $2,r0; br 1f
|
||
cmi.2W: mov $4,r0; br 1f
|
||
cmi.l: jsr pc,wrdoff; br 1f
|
||
cmi.z: mov (sp)+,r0;
|
||
1: jsr pc,calccomp; next
|
||
cms.s0: clr r0; bisb (pcx)+,r0
|
||
1: jsr pc,calccomp; tst (sp)+;
|
||
bne great; clr -(sp); next
|
||
cms.l: jsr pc,wrdoff; br 1b
|
||
cms.z: mov (sp)+,r0; br 1b
|
||
cmu.l: jsr pc,wrdoff; br 1f
|
||
cmu.z: mov (sp)+,r0; br 1f
|
||
cmp.z: mov $2,r0;
|
||
1: jsr pc,calccomp; mov (sp)+,r1;
|
||
jlo less; jhi great;
|
||
clr -(sp); next
|
||
cmf.s0: clr r0; bisb (pcx)+,r0;
|
||
1: cmp $4,r0; beq 3f
|
||
cmp $8,r0; beq 3f
|
||
jsr pc,e.oddz;
|
||
3: jsr pc,setfloat
|
||
movf (sp)+,fr0; cmpf (sp)+,fr0;
|
||
4: cfcc; jlt less; jgt great;
|
||
clr -(sp); next
|
||
cmf.l: jsr pc,wrdoff; br 1b
|
||
cmf.z: mov (sp)+,r0; br 1b
|
||
less: mov $-1,-(sp); next
|
||
|
||
/------------------------------------------------------------------------------
|
||
/------------------------------------------------------------------------------
|
||
/------------------------------------------------------------------------------
|
||
/ call and return group
|
||
/------------------------------------------------------------------------------
|
||
/
|
||
/ Frame format on the stack is:
|
||
/
|
||
/ | Parameter 1 |
|
||
/ | - - - - - - - - - - - - |
|
||
/ | Static link = param 0 | < AB
|
||
/ |_________________________| ____
|
||
/ |-------------------------| | P
|
||
/ | Saved line number | | R
|
||
/ |-------------------------| | O
|
||
/ | Saved file address | | C
|
||
/ |-------------------------| | F
|
||
/ | Return address | | R
|
||
/ |-------------------------| | A
|
||
/ | Dynamic link | < LB | M
|
||
/ |_________________________| ____| E
|
||
/ |-------------------------|
|
||
/ | |
|
||
/ | local variable -1 |
|
||
/ |-------------------------|
|
||
/ | |
|
||
/
|
||
/
|
||
/ The static link and the parameters are set by the
|
||
/ calling procedure; the frame is set by cal which reserves
|
||
/ also the space for local variables.
|
||
/------------------------------------------------------------------------------
|
||
|
||
cal.1: cal.2: cal.3: cal.4: cal.5: cal.6: cal.7: cal.8:
|
||
cal.9: cal.10: cal.11: cal.12: cal.13: cal.14: cal.15: cal.16:
|
||
cal.17: cal.18: cal.19: cal.20: cal.21: cal.22: cal.23: cal.24:
|
||
cal.25: cal.26: cal.27: cal.28:
|
||
|
||
asr r0; sub $077,r0; br 1f
|
||
cal.s0: clr r0; bisb (pcx)+,r0; br 1f
|
||
cai.z: mov (sp)+,r0; br 1f
|
||
cal.l: jsr pc,wrdoff
|
||
lblcal:
|
||
1:
|
||
cmp nprocs,r0
|
||
jlos e.badpc
|
||
1: asl r0; asl r0;
|
||
.if .flow + .count + .prof
|
||
mov r0,r5;
|
||
asl r5
|
||
add r5,r0 / procdes 12 bytes in this case
|
||
.endif
|
||
add pd,r0; / now r0 points to the bottom
|
||
/ of the proc descriptor
|
||
mov *eb,-(sp) / save line number
|
||
mov *filb,-(sp) / save file address
|
||
|
||
.if .prof + .count + .flow
|
||
tst 10.(r0) / yet a filename defined in this proc?
|
||
bne 4f / yes? continue
|
||
mov (sp),10.(r0) / no? Then take the old filename
|
||
4: mov curproc,(sp) / save old procdescriptor
|
||
mov r0,curproc / continue with the new one
|
||
mov 4(r0),countfld / count pointer minus line number
|
||
sub 6(r0),countfld / to add at line numbers
|
||
.endif
|
||
mov pcx,-(sp) / return address
|
||
mov r2,-(sp) / old local base
|
||
mov sp,r2 / new local base
|
||
mov (r0)+,r1 / number of bytes for locals
|
||
beq 3f / no locals
|
||
inc r1; asr r1 / make even
|
||
2: mov $und,-(sp) / make undefined
|
||
sob r1,2b / for r1 words local
|
||
3: mov (r0),pcx / em start address
|
||
next / ready
|
||
/------------------------------------------------------------------------------
|
||
|
||
ret.l: jsr pc,wrdoff; br 1f
|
||
ret.1W: mov $2,r0; br 1f
|
||
ret.s0: clr r0; bisb (pcx)+,r0;
|
||
jlt e.oddz / bad result size
|
||
beq ret.0 / no result
|
||
cmp $32.,r0; bge 1f; jsr pc,e.badlfr
|
||
1: inc r0; asr r0 / make even
|
||
mov r0,retsize / result size
|
||
mov $retarea,r1 / must point to retarea
|
||
2: mov (sp)+,(r1)+ / load result
|
||
sob r0,2b / continue when there is more
|
||
br 3f
|
||
retcount:
|
||
ret.0: clr retsize / no function result
|
||
3: mov r2,sp / set sp to bottom frame
|
||
mov (sp)+,r2 / restore (dynamic) local base
|
||
jeq lblhalt; / if zero then main procedure returns
|
||
mov (sp)+,pcx / return address in program counter
|
||
mov eb,r1 / must point to external base
|
||
mov (sp)+,r0 / file or procdesbase in r0
|
||
.if .count + .flow + .prof
|
||
mov r0,curproc / save procdesbase current proc
|
||
mov 4(r0),countfld / restore pointer to
|
||
beq 5f / countfield 0 non interesting
|
||
sub 6(r0),countfld / table entries
|
||
mov countfld,countptr
|
||
add (sp),countptr
|
||
.if .prof
|
||
tst (sp)
|
||
beq 5f
|
||
mov countptr,r5
|
||
asl r5
|
||
asl r5
|
||
add ltime,r5
|
||
mov r5,hiprof
|
||
add $2,r5
|
||
mov r5,loprof
|
||
.endif
|
||
5:
|
||
mov 10.(r0),r0 / pointer to file name in r0
|
||
.endif
|
||
retlast:
|
||
.if .last
|
||
tst 4(r1) / file 0 not stacked
|
||
beq 4f
|
||
cmp r0,4(r1) / same file name?
|
||
beq 4f / yes continue
|
||
jsr pc,nexttab / next line table entry in r5
|
||
clr (r5) / 0 indicates file pointer follows
|
||
jsr pc,nexttab / next entry in r5
|
||
mov 4(r1),(r5) / store pointer to file name
|
||
5: mov (sp),(r1) / restored line number in *eb
|
||
beq 4f / do not put 0 in last table
|
||
jsr pc,nexttab / next entry in r5
|
||
mov (sp),(r5) / line number in table
|
||
4: cmp (sp),(r1) / line number different?
|
||
bne 5b / yes? put it in table
|
||
.endif
|
||
mov r0,4(r1) / old file address
|
||
mov (sp)+,(r1) / reset line number
|
||
next / main loop again
|
||
|
||
lfr.l: jsr pc,wrdoff;
|
||
8: bit $1,r0; jne e.illins
|
||
cmp r0,retsize; jeq 7f; jsr pc,e.badlfr
|
||
7: asr r0; / number of words
|
||
tst r0; beq 0f;
|
||
mov $retarea,r1; / must point to retarea
|
||
add r0,r1;
|
||
add r0,r1; / top of result
|
||
2: mov -(r1),-(sp); / move word of result
|
||
sob r0,2b; / look for more
|
||
0: next
|
||
lfr.1W: mov $2,r0; br 8b
|
||
lfr.2W: mov $4,r0; br 8b
|
||
lfr.s0: clr r0; bisb (pcx)+,r0; br 8b
|
||
/
|
||
/------------------------------------------------------------------------------
|
||
|
||
/ miscellaneous
|
||
/------------------------------------------------------------------------------
|
||
exg.s0: clr r0; bisb (pcx)+,r0; br 1f
|
||
exg.l: jsr pc,wrdoff; br 1f
|
||
exg.z: mov (sp)+,r0;
|
||
1: cmp r0,$1; beq 0f;
|
||
blt 9f; bit $1,r0;
|
||
bne 9f;
|
||
add r0,sp;
|
||
mov r0,r1; asr r1;
|
||
add sp,r0;
|
||
2: mov -(sp),r5; mov -(r0),(sp);
|
||
mov r5,(r0); sob r1,2b;
|
||
next
|
||
0: swab (sp); next
|
||
9: jsr pc,e.oddz; next
|
||
|
||
|
||
|
||
|
||
/------------------------------------------------------------------------------
|
||
|
||
dup.1W: mov (sp),-(sp); next
|
||
dup.l: jsr pc,wrdoff; br 1f;
|
||
dus.l: jsr pc,wrdoff; br 0f;
|
||
dus.z: mov (sp)+,r0;
|
||
0: ble 9b; bit $1,r0;
|
||
bne 9b; add r0,sp;
|
||
tst -(sp); mov (sp)+,r0;
|
||
1: ble 9b; inc r0;
|
||
bic $1,r0; mov r0,r1;
|
||
mov sp,r5; add r0,r5;
|
||
asr r1;
|
||
2: mov -(r5),-(sp); sob r1,2b; next
|
||
|
||
nop.z:
|
||
next
|
||
|
||
/------------------------------------------------------------------------------
|
||
fil.l: jsr pc,wrdoff; add eb,r0
|
||
cmp r0,*filb; beq 1f;
|
||
.if .last
|
||
clr *eb / new file asks for new line
|
||
jsr pc,nexttab; clr (r5);
|
||
jsr pc,nexttab; mov *filb,(r5);
|
||
.endif
|
||
.if .flow + .count + .prof
|
||
mov curproc,r1 / current proc descriptor
|
||
mov 4(r1),countfld
|
||
sub 6(r1),countfld / start countptr for this proc
|
||
mov r0,10.(r1) / file pointer in procdes
|
||
.endif
|
||
mov r0,*filb
|
||
1: next
|
||
lni.z: inc *eb;
|
||
.if .count + .flow + .prof
|
||
inc countptr
|
||
.if .prof
|
||
add $4,hiprof
|
||
add $4,loprof
|
||
.endif
|
||
.endif
|
||
br 8f
|
||
lin.l: jsr pc,wrdoff; br 1f
|
||
lin.s0: clr r0; bisb (pcx)+,r0
|
||
1: cmp *eb,r0; beq 9f;
|
||
mov r0,*eb
|
||
.if .count + .flow + .prof
|
||
mov countfld,r5
|
||
add r0,r5 / this is the right countptr
|
||
mov r5,countptr
|
||
.if .prof
|
||
asl r5
|
||
asl r5
|
||
add ltime,r5
|
||
mov r5,hiprof
|
||
add $2,r5
|
||
mov r5,loprof
|
||
.endif
|
||
.endif
|
||
8:
|
||
.if .last
|
||
jsr pc,nexttab / next entry in lasttab
|
||
mov *eb,(r5) / set endline
|
||
.endif
|
||
.if .count
|
||
mov countptr,r1 / line number in r1
|
||
asl r1
|
||
asl r1 / multiply by 4
|
||
add lcount,r1 / r1 is pointer to long integer now
|
||
add $1,2(r1) / cannot be inc
|
||
adc (r1) / that was all
|
||
.endif
|
||
.if .flow
|
||
mov countptr,r1 / line number in r1
|
||
clr r0 / get ready for divide
|
||
div $8.,r0 / r0 = byte offset; r1 = bit offset
|
||
add lflow,r0 / r0 is byte pointer now
|
||
bisb bits(r1),(r0) / set bit
|
||
.endif
|
||
9: next
|
||
|
||
/------------------------------------------------------------------------------
|
||
|
||
bls.l: jsr pc,wrdoff; br 0f;
|
||
bls.z: mov (sp)+,r0;
|
||
0: asr r0
|
||
bhi 1f
|
||
jbr e.oddz
|
||
1: mov (sp)+,r1; sob r0,1b;
|
||
mov r1,r0; br 1f;
|
||
blm.l: jsr pc,wrdoff
|
||
tst r0
|
||
br 1f
|
||
blm.s0: clr r0; bisb (pcx)+,r0
|
||
1: jsr pc,regsave; jsr pc,chckptr
|
||
mov (sp)+,r2; jsr pc,chckptr
|
||
mov (sp)+,r3
|
||
mov r0,r1
|
||
asr r0
|
||
beq 2f / Now avoid wrong copy. The pieces may overlap !
|
||
cmp r3,r2
|
||
beq 2f
|
||
blt 3f
|
||
1: mov (r3)+,(r2)+
|
||
sob r0,1b
|
||
2: jsr pc,regretu; next
|
||
3: add r1,r3; add r1,r2;
|
||
1: mov -(r3),-(r2); sob r0,1b; br 2b
|
||
/------------------------------------------------------------------------------
|
||
/ Range check and case instructions
|
||
/------------------------------------------------------------------------------
|
||
csa.l: jsr pc,wrdoff; br 1f;
|
||
csa.z: mov (sp)+,r0;
|
||
1: sub $2,r0; jne e.illins;
|
||
csa.1W: mov (sp)+,r0;
|
||
mov (sp)+,r1; sub 2(r0),r1;
|
||
blt 6f; cmp 4(r0),r1;
|
||
blo 6f; asl r1;
|
||
add $6,r1; add r0,r1;
|
||
5: mov (r1),pcx;
|
||
jeq e.case; next
|
||
6: mov r0,r1; br 5b;
|
||
|
||
csb.z: mov (sp)+,r0; br 1f;
|
||
csb.l: jsr pc,wrdoff;
|
||
1: sub $2,r0; jne e.illins;
|
||
csb.1W: mov (sp)+,r0; mov (sp)+,r1;
|
||
mov 2(r0),r5; mov r0,pcx;
|
||
/use pcx as ordinary register
|
||
2: add $4,r0; cmp (r0),r1;
|
||
beq 4f; sob r5,2b;
|
||
mov (pcx),pcx; jeq e.case; next
|
||
4: mov 2(r0),pcx; jeq e.case; next
|
||
|
||
rck.l: jsr pc,wrdoff; br 1f;
|
||
rck.z: mov (sp)+,r0;
|
||
1: sub $2,r0; beq rck.1W;
|
||
sub $2,r0; jne e.oddz;
|
||
mov (sp)+,r1; cmp (sp),(r1);
|
||
blt 9f; cmp (sp),4(r1);
|
||
bgt 9f; next
|
||
rck.1W: mov (sp)+,r1; cmp (sp),(r1);
|
||
blt 9f; cmp (sp),2(r1);
|
||
bgt 9f; next
|
||
9: mov $ERANGE,-(sp); jmp trp.z;
|
||
|
||
/------------------------------------------------------------------------------
|
||
/ Load and store register
|
||
/------------------------------------------------------------------------------
|
||
lbllor:
|
||
lor.s0: clr r0; bisb (pcx)+,r0
|
||
cmp r0,$2; jhi e.illins
|
||
asl r0; jmp 1f(r0)
|
||
1: br 2f; br 3f; br 4f
|
||
2: mov lb,-(sp); next
|
||
3: mov sp,r1; mov r1,-(sp); next
|
||
4: mov hp,-(sp); next
|
||
lblstr:
|
||
str.s0: clr r0; bisb (pcx)+,r0
|
||
cmp r0,$2; jhi e.illins
|
||
asl r0; jmp 1f(r0)
|
||
1: br 2f; br 3f; br 4f
|
||
2: mov (sp)+,lb; next
|
||
3: mov (sp)+,r1; mov r1,sp; next
|
||
4: mov (sp)+,r1;
|
||
5: cmp r1,sybreak+2;
|
||
blos 5f; add $unixextra,sybreak+2;
|
||
sys indir;sybreak / ask for more core
|
||
jec 5b;
|
||
jsr pc,e.heap; / core claim failed
|
||
5: cmp r1,globmax; jlo e.heap;
|
||
mov r1,hp; next
|
||
|
||
/------------------------------------------------------------------------------
|
||
|
||
ass.l: jsr pc,wrdoff; br 1f
|
||
ass.z: mov (sp)+,r0;
|
||
1: cmp $2,r0; beq 2f
|
||
cmp $4,r0; jne e.oddz
|
||
mov (sp)+,r0;
|
||
2: mov (sp)+,r0; br 3f
|
||
asp.lw: jsr pc,wrdoff; br 2f
|
||
asp.w0: clr r0; bisb (pcx)+,r0;
|
||
2: asl r0; br 3f
|
||
asp.1W: asp.2W: asp.3W: asp.4W: asp.5W:
|
||
sub $88.,r0;
|
||
3: blt 4f; add r0,sp; next
|
||
4: neg r0; asr r0;
|
||
2: mov $und,-(sp); sob r0,2b; next
|
||
|
||
|
||
/------------------------------------------------------------------------------
|
||
|
||
dch.z: mov (sp)+,r1; mov (r1),-(sp);
|
||
cmp (sp),ml; jge e.badptr;
|
||
next / dch adjusts local base to
|
||
/ dynamically previous local base
|
||
|
||
lpb.z: add $8.,(sp); next / static link 8 bytes from lb
|
||
|
||
/------------------------------------------------------------------------------
|
||
|
||
gto.l: jsr pc,wrdoff; / get descriptor address
|
||
add eb,r0 / descriptor is in external address space
|
||
mov 4(r0),r2; / new local base after jump
|
||
mov 2(r0),sp; / new stack pointer after jump
|
||
mov (r0),pcx; / new program counter
|
||
.if .prof + .flow + .count
|
||
mov firstp,r0
|
||
1: mov 8.(r0),r1
|
||
cmp r3,2(r1)
|
||
blos 2f
|
||
mov r1,r0
|
||
br 1b
|
||
2: mov r0,curproc / procdesbase current proc
|
||
mov 4(r0),countfld / restore pointer to
|
||
sub 6(r0),countfld / table entries
|
||
mov 10.(r0),*filb / file name restored
|
||
.endif
|
||
next
|
||
/------------------------------------------------------------------------------
|
||
/ Ignore mask
|
||
/------------------------------------------------------------------------------
|
||
|
||
lim.z: mov ignmask,-(sp); next / load ignore mask
|
||
sim.z: mov (sp)+,ignmask; next / store ignore mask
|
||
/ for trap routines
|
||
|
||
sig.z: mov (sp),r1; / exchange previous
|
||
mov uerrorp,(sp); / and stacked error
|
||
mov r1,uerrorp; / procedure pointer
|
||
next
|
||
/------------------------------------------------------------------------------
|
||
/ Signals generated by UNIX
|
||
/------------------------------------------------------------------------------
|
||
|
||
sig1:
|
||
mov $sig.trp+0.,-(sp); br 1f
|
||
sig2:
|
||
mov $sig.trp+2.,-(sp); br 1f
|
||
sig3:
|
||
mov $sig.trp+4.,-(sp); br 1f
|
||
sig13:
|
||
mov $sig.trp+24.,-(sp); br 1f
|
||
sig14:
|
||
mov $sig.trp+26.,-(sp); br 1f
|
||
sig15:
|
||
mov $sig.trp+28.,-(sp); br 1f
|
||
sig16:
|
||
mov $sig.trp+30.,-(sp) / push address trap number
|
||
1: mov *(sp),-2(sp); / save trap number
|
||
mov $-2,*(sp) / set defold trap number
|
||
mov $retutrap,(sp) / set return address to rti
|
||
tst -(sp) / trap number position on stack
|
||
jbr error
|
||
|
||
sig12: mov r0,-(sp)
|
||
mov $2,r0; / fildes standard error
|
||
sys 0; 9b / call write message
|
||
sys signal;12.;sig12 / this is a mon-error
|
||
jsr pc,e.badmon
|
||
mov (sp)+,r0
|
||
rti
|
||
|
||
sig11: mov r0,saver1 /save r0
|
||
mov sybreak+2,r0
|
||
sub sp,r0
|
||
jgt e.memflt /real trap
|
||
mov $7f,r0
|
||
mov argv,sp /setup a new stack
|
||
jbr rude_error
|
||
|
||
.data
|
||
7: <stack overflow\n\0>
|
||
.even
|
||
sybreak:sys break;_end /For indirect calling of break
|
||
.text
|
||
sig8: mov r0,saver1;
|
||
sys signal;8.;sig8
|
||
mov $ECONV,fpperr+6
|
||
stfps r0
|
||
bit $100,r0
|
||
beq 1f
|
||
mov $ECONV,fpperr+6
|
||
1: stst r0
|
||
mov $retutrap,-(sp)
|
||
mov fpperr(r0),-(sp)
|
||
mov saver1,r0
|
||
jbr error
|
||
retutrap: rti
|
||
.data
|
||
fpperr: EILLINS; EILLINS; EFDIVZ; ECONV; EFOVFL; EFUNFL; EFUND; EILLINS
|
||
.text
|
||
/------------------------------------------------------------------------------
|
||
/ Errors,traps and all their friends
|
||
|
||
/------------------------------------------------------------------------------
|
||
|
||
savereg: mov r1,-(sp) / stack r1 so r1 scratch register
|
||
mov 2(sp),r1 / now r1 contains return address
|
||
mov r0,2(sp) / save r0
|
||
mov r2,-(sp) / save r2
|
||
mov r3,-(sp) / save r3
|
||
mov r4,-(sp) / save r4
|
||
mov r5,-(sp) / save r5
|
||
mov 12.(sp),r0 / copy error number or param 0
|
||
movf fr0,-(sp) / save float registers
|
||
movf fr1,-(sp) / fr0 and fr1
|
||
stfps -(sp) / and status
|
||
mov $retsize+26.,r5
|
||
mov $13.,r2
|
||
8: mov -(r5),-(sp); sob r2,8b
|
||
mov r0,-(sp) / extra errno (param 0) on stack
|
||
mov r1,-(sp) / set return address
|
||
rts pc
|
||
|
||
restoreg: mov (sp)+,r1 / return address in r1
|
||
add $2,sp / skip error number (param 0)
|
||
mov $13.,r2;
|
||
mov $retsize,r5;
|
||
8: mov (sp)+,(r5)+; sob r2,8b
|
||
ldfps (sp)+ / restore floating point status
|
||
movf (sp)+,fr1 / restore float registers
|
||
movf (sp)+,fr0 / fr0 and fr1
|
||
mov (sp)+,r5 / restore r5
|
||
mov (sp)+,r4 / restore r4
|
||
mov (sp)+,r3 / restore r3
|
||
mov (sp)+,r2 / restore r2
|
||
mov 2(sp),r0 / restore r0
|
||
mov r1,2(sp) / reset return address
|
||
mov (sp)+,r1 / restore r1
|
||
rts pc
|
||
|
||
/------------------------------------------------------------------------------
|
||
/ Various error entries
|
||
/------------------------------------------------------------------------------
|
||
|
||
e.badlfr: mov r0,r5; mov $2,r0; mov $blfr,9f+2
|
||
sys 0;9f;
|
||
mov r5,r0; rts pc
|
||
.data
|
||
9: sys write;7;0;
|
||
blfr: <badlfr\n\0>
|
||
.even
|
||
.text
|
||
|
||
e.iund: mov $EIUND,-(sp); br error
|
||
e.iovfl: mov $EIOVFL,-(sp); br error
|
||
e.idivz: mov $EIDIVZ,-(sp); br error
|
||
e.range: mov $ERANGE,-(sp); br error
|
||
e.set: mov $ESET,-(sp); br error
|
||
e.badptr: mov $EBADPTR,-(sp); br fatal
|
||
e.fovfl: mov $EFOVFL,-(sp); br error
|
||
e.funfl: mov $EFUNFL,-(sp); br error
|
||
e.fdivz: mov $EFDIVZ,-(sp); br error
|
||
e.fund: mov $EFUND,-(sp); br error
|
||
e.conv: mov $ECONV,-(sp); br error
|
||
e.stack: mov $ESTACK,-(sp); br fatal
|
||
e.badpc: mov $EBADPC,-(sp); br fatal
|
||
e.badlin: mov $EBADLIN,-(sp); br error
|
||
e.badlae: mov $EBADLAE,-(sp); br error
|
||
e.array: mov $EARRAY,-(sp); br error
|
||
e.badmon: mov $EBADMON,-(sp); br error
|
||
e.case: mov $ECASE,-(sp); br fatal
|
||
e.oddz: mov $EODDZ,-(sp); br fatal
|
||
e.illins: mov $EILLINS,-(sp); br fatal
|
||
e.heap: mov $EHEAP,-(sp); br fatal
|
||
e.memflt: mov $EMEMFLT,-(sp); br fatal
|
||
e.badgto: mov $EBADGTO,-(sp); br error
|
||
/------------------------------------------------------------------------------
|
||
|
||
fatal: mov $hlt.z,-(sp) / return from fatal halts
|
||
mov 2(sp),-(sp) / dup error number
|
||
error:
|
||
jsr pc,savereg / save old register contents
|
||
cmp $16.,r0;
|
||
ble 9f;
|
||
mov $1,r1
|
||
ash r0,r1
|
||
bic ignmask,r1
|
||
bne 9f
|
||
jsr pc,restoreg
|
||
add $2,sp / remove error number from stack
|
||
rts pc
|
||
9:
|
||
cmp uerrorp,$-1 / has the user defined a trapprocedure ?
|
||
beq notrap / if not kill it off fast
|
||
mov uerrorp,-(sp) / go for cal
|
||
mov $-1,uerrorp / user must set trap again
|
||
jbr precal / call trap routine
|
||
|
||
/------------------------------------------------------------------------------
|
||
|
||
rtt.z: mov r2,sp / sp to bottom frame
|
||
add $8,sp / set to top frame
|
||
jsr pc,restoreg / restore status and registers
|
||
add $2,sp / skip error number
|
||
rts pc
|
||
/------------------------------------------------------------------------------
|
||
trp.z: mov (sp),-(sp); / error number one down
|
||
mov r4,2(sp); / set return address to main loop
|
||
jbr error / call error routine
|
||
|
||
/------------------------------------------------------------------------------
|
||
|
||
notrap: mov (sp),r1 / error number
|
||
mov $num+9.,r0
|
||
mov r1,retarea / set error number for exit status
|
||
jsr pc,itoa / make string
|
||
mov $num,r0
|
||
rude_error:
|
||
mov r0,8f+4
|
||
mov *filb,8f / pointer to file name
|
||
mov *eb,r1 / line number
|
||
mov $line,8f+6 / line message
|
||
mov $line+21.,r0
|
||
jsr pc,itoa / convert to string
|
||
1: mov $8f,r4
|
||
2: mov (r4)+,r0 / next string
|
||
beq 5f
|
||
3: mov r0,9f+2
|
||
4: tstb (r0)+ / find zero byte
|
||
bne 4b
|
||
dec r0
|
||
sub 9f+2,r0 / string length
|
||
mov r0,9f+4
|
||
mov $2,r0 / diagnostic output
|
||
sys 0; 9f
|
||
jbr 2b
|
||
5: / no file
|
||
mov $-1,argc
|
||
jbr hlt.z
|
||
|
||
itoa: mov r5,-(sp)
|
||
mov r0,r5
|
||
1: clr r0
|
||
div $10.,r0
|
||
add $'0,r1
|
||
movb r1,-(r5)
|
||
mov r0,r1
|
||
bne 1b
|
||
mov r5,r0
|
||
mov (sp)+,r5
|
||
rts pc
|
||
|
||
.data
|
||
uerrorp: -1 / undefined trap procedure
|
||
sep: <: \0>
|
||
line: < on source line \n\0>
|
||
num: <error \0>
|
||
.even
|
||
8: 0 / name of text file
|
||
sep / separator
|
||
0 / error
|
||
line+21. / line number if present
|
||
0 / end of list
|
||
lblwri:
|
||
9: sys write;0;0
|
||
.text
|
||
/------------------------------------------------------------------------------
|
||
/ Exit instruction, with all it's crud
|
||
/------------------------------------------------------------------------------
|
||
|
||
hlt.z:
|
||
mov (sp)+,retarea
|
||
.if .count + .flow + .prof
|
||
br 9f
|
||
.endif
|
||
bne 9f
|
||
clr r0
|
||
sys exit
|
||
9:
|
||
lblhalt:
|
||
sys creat;1f;666
|
||
.data
|
||
1: <em_runinf\0>
|
||
2: <runinf file failed\n\0>
|
||
.even
|
||
.text
|
||
bec 2f
|
||
3: mov $2b,lblwri+2
|
||
mov $19.,lblwri+4
|
||
mov $2.,r0
|
||
sys indir;lblwri
|
||
br 9f
|
||
2: mov r0,saver0
|
||
mov $hp,r1
|
||
mov r1,ndatad
|
||
mov $txtsiz,r5
|
||
mov r5,txtsiz
|
||
sub r5,r1
|
||
mov r5,lblwri+2
|
||
mov r1,lblwri+4
|
||
clr r1
|
||
.if .last
|
||
add $1,r1
|
||
.endif
|
||
.if .opfreq
|
||
add $2,r1
|
||
.endif
|
||
.if .count
|
||
add $4,r1
|
||
.endif
|
||
.if .flow
|
||
add $8.,r1
|
||
.endif
|
||
.if .prof
|
||
add $16.,r1
|
||
.endif
|
||
mov r1,entry.
|
||
sys indir;lblwri
|
||
bes 3b
|
||
mov pd,lblwri+2
|
||
mov tblmax,lblwri+4
|
||
sub pd,lblwri+4
|
||
mov saver0,r0
|
||
sys indir;lblwri
|
||
bes 3b
|
||
mov ml,lblwri+2
|
||
mov ml,lblwri+4
|
||
neg lblwri+4
|
||
mov saver0,r0
|
||
sys indir;lblwri
|
||
bes 3b
|
||
9:
|
||
mov retarea,r0 / set exit status
|
||
2: sys exit
|
||
|
||
/------------------------------------------------------------------------------
|
||
/ System call interface routine
|
||
/------------------------------------------------------------------------------
|
||
R0_IN = 0200
|
||
R1_IN = 0100
|
||
R0_OUT = 040
|
||
R1_OUT = 020
|
||
CBIT = 010
|
||
|
||
lblmon:
|
||
mon.z:
|
||
mov (sp)+,r0; / call number from stack
|
||
cmp r0,$1 / sys exit ?
|
||
jeq hlt.z / go there
|
||
bit $177700,r0; / range 0-63?
|
||
bne mon.bad; / no? bad call
|
||
movb r0,call; / move call number in system call
|
||
movb tab(r0),r5; / table lookup call conditions
|
||
cmp r5,$-1; / compare for special context
|
||
beq mon.special; / yes? jump to special context
|
||
monmon: mov r5,r4; / save call conditions
|
||
rolb r5 / R0_IN
|
||
bcc 1f / check if bit 7 is on
|
||
mov (sp)+,r0; / call argument in r0
|
||
1: rolb r5 / R1_IN
|
||
bcc 1f / check if bit 6 is on
|
||
mov (sp)+,r1; / argument in r1
|
||
1: bic $177770,r4 / clear all exept bits 2,1,0
|
||
beq 2f / if 0 forget about args
|
||
mov r3,saver1 / save r3
|
||
mov $call+2,r3 / base of args for call
|
||
1: mov (sp)+,(r3)+ / move argument
|
||
sob r4,1b / look for more
|
||
mov saver1,r3 / restore r3
|
||
2: sys indir;call / this is it folks
|
||
bcc 1f / no error set? forward
|
||
mov r0,r4 / copy error in r4
|
||
1: rolb r5 / R0_OUT
|
||
bcc 1f / check original bit 5
|
||
mov r0,-(sp) / stack r0 from errno
|
||
1: rolb r5 / R1_OUT
|
||
bcc 1f / check original bit 4
|
||
mov r1,-(sp) / stack r1
|
||
1: rolb r5 / CBIT
|
||
bcc mon.end / no c-bit then ready
|
||
mon.cbit:
|
||
mov r4,-(sp) / stack errno
|
||
beq mon.end / only once if no error
|
||
mov r4,-(sp) / stack errno twice when error
|
||
mon.end:
|
||
mov $loop,r4 / restore r4
|
||
next / ready
|
||
|
||
mon.special: / special calls decoded here
|
||
cmp r0,$fork / fork?
|
||
beq mon.fork
|
||
cmp r0,$signal / signal?
|
||
beq mon.signal
|
||
mon.bad: / otherwise undecodable
|
||
mov saver0,r4 / restore r4
|
||
jsr pc,e.badmon / mon call error routine
|
||
next
|
||
|
||
mon.fork:
|
||
clr r5
|
||
clr r4
|
||
sys fork
|
||
inc r5
|
||
bcc 1f
|
||
mov r0,r4
|
||
1: mov r0,-(sp)
|
||
mov r5,-(sp)
|
||
br mon.cbit
|
||
mon.signal:
|
||
msign:
|
||
mov (sp)+,r1 / trap number
|
||
mov (sp)+,r0 / signal number
|
||
cmp r0,$16. / only 1 - 16 legal
|
||
bhi sig.bad
|
||
mov r0,call+2 / move signal number into call
|
||
beq sig.bad / 0 illegal
|
||
asl r0 / make 2-32 and even
|
||
mov sig.trp-2(r0),r5 / previous trap number
|
||
cmp r1,$256. / values -1 and -2 special
|
||
bhis 1f
|
||
mov sig.adr-2(r0),r4 / zero label means illegal signal
|
||
bne 2f
|
||
sig.bad:
|
||
mov $EINVAL,r4 / bad signal
|
||
jbr mon.cbit / and continue
|
||
1: cmp r1,$-3 / -2: reset default, -3: ignore
|
||
blo sig.bad
|
||
mov r1,r4 / trap number in r4
|
||
inc r4
|
||
inc r4 / -2 -> 0, -3 -> -1
|
||
2: mov r1,sig.trp-2(r0) / new trap number
|
||
/ -3 if ignored; -2 if default action
|
||
mov r4,call+4 / translated trap number in call
|
||
clr r4
|
||
sys indir;call
|
||
bcs sig.bad / unlikely to happen
|
||
asr r0 / special if old label odd
|
||
bcc 1f
|
||
mov $-3,r5 / set ignore signal
|
||
1: mov r5,-(sp) / push trap number
|
||
jbr mon.cbit
|
||
|
||
|
||
.data
|
||
|
||
call: sys 0; 0; 0; 0; 0
|
||
sig.trp:
|
||
-2; -2; -2; -2; -2; -2; -2; -2
|
||
-2; -2; 21.; 25.; -2; -2; -2; -2
|
||
sig.adr:
|
||
sig1; sig2; sig3; 0; 0; 0; 0; sig8
|
||
0; 0; sig11; sig12; sig13; sig14; sig15; sig16
|
||
|
||
tab:
|
||
.if V6
|
||
.byte -1 / 0 = indir
|
||
.byte -1 / 1 = exit
|
||
.byte -1 / 2 = fork
|
||
.byte 2 +R0_IN +R0_OUT +CBIT / 3 = read
|
||
.byte 2 +R0_IN +R0_OUT +CBIT / 4 = write
|
||
.byte 2 +R0_OUT +CBIT / 5 = open
|
||
.byte 0 +R0_IN +CBIT / 6 = close
|
||
.byte 0 +R0_OUT +R1_OUT +CBIT / 7 = wait
|
||
.byte 2 +R0_OUT +CBIT / 8 = creat
|
||
.byte 2 +CBIT / 9 = link
|
||
.byte 1 +CBIT / 10 = unlink
|
||
.byte 2 +CBIT / 11 = exec
|
||
.byte 1 +CBIT / 12 = chdir
|
||
.byte 0 +R0_OUT +R1_OUT / 13 = time
|
||
.byte 3 +CBIT / 14 = mknod
|
||
.byte 2 +CBIT / 15 = chmod
|
||
.byte 2 +CBIT / 16 = chown
|
||
.byte -1 / 17 = break
|
||
.byte 2 +CBIT / 18 = stat
|
||
.byte 2 +R0_IN +CBIT / 19 = seek
|
||
.byte 0 +R0_OUT / 20 = getpid
|
||
.byte 3 +CBIT / 21 = mount
|
||
.byte 1 +CBIT / 22 = umount
|
||
.byte 0 +R0_IN +CBIT / 23 = setuid
|
||
.byte 0 +R0_OUT / 24 = getuid
|
||
.byte 0 +R1_IN +R0_IN +CBIT / 25 = stime
|
||
.byte 3 +R0_IN +R0_OUT +CBIT / 26 = ptrace
|
||
.byte -1 / 27 = x
|
||
.byte 1 +R0_IN +CBIT / 28 = fstat
|
||
.byte -1 / 29 = x
|
||
.byte -1 / 30 = x
|
||
.byte 1 +R0_IN +CBIT / 31 = stty
|
||
.byte 1 +R0_IN +CBIT / 32 = gtty
|
||
.byte -1 / 33 = x
|
||
.byte 0 +R0_IN +CBIT / 34 = nice
|
||
.byte 0 +R0_IN / 35 = sleep
|
||
.byte 0 / 36 = sync
|
||
.byte 1 +R0_IN +CBIT / 37 = kill
|
||
.byte 0 +R0_OUT / 38 = csw
|
||
.byte -1 / 39 = x
|
||
.byte -1 / 40 = x
|
||
.byte 0 +R0_IN +R0_OUT +CBIT / 41 = dup
|
||
.byte 0 +R0_OUT +R1_OUT +CBIT / 42 = pipe
|
||
.byte 1 / 43 = times
|
||
.byte 4 / 44 = prof
|
||
.byte -1 / 45 = x
|
||
.byte 0 +R0_IN +CBIT / 46 = setgid
|
||
.byte 0 +R0_OUT / 47 = getgid
|
||
.byte -1 / 48 = signal
|
||
.byte -1 / 49 = reserved for USG
|
||
.byte -1 / 50 = reserved for USG
|
||
.byte -1 / 51 = x
|
||
.byte -1 / 52 = x
|
||
.byte -1 / 53 = x
|
||
.byte -1 / 54 = x
|
||
.byte -1 / 55 = x
|
||
.byte -1 / 56 = x
|
||
.byte -1 / 57 = x
|
||
.byte -1 / 58 = x
|
||
.byte -1 / 59 = x
|
||
.byte -1 / 60 = x
|
||
.byte -1 / 61 = x
|
||
.byte -1 / 62 = x
|
||
.byte -1 / 63 = x
|
||
.endif
|
||
|
||
.if VPLUS
|
||
.byte -1 / 0 = indir
|
||
.byte -1 / 1 = exit
|
||
.byte -1 / 2 = fork
|
||
.byte 2 +R0_IN +R0_OUT +CBIT / 3 = read
|
||
.byte 2 +R0_IN +R0_OUT +CBIT / 4 = write
|
||
.byte 2 +R0_OUT +CBIT / 5 = open
|
||
.byte 0 +R0_IN +CBIT / 6 = close
|
||
.byte 0 +R0_OUT +R1_OUT +CBIT / 7 = wait
|
||
.byte 2 +R0_OUT +CBIT / 8 = creat
|
||
.byte 2 +CBIT / 9 = link
|
||
.byte 1 +CBIT / 10 = unlink
|
||
.byte 2 +CBIT / 11 = exec
|
||
.byte 1 +CBIT / 12 = chdir
|
||
.byte 0 +R0_OUT +R1_OUT / 13 = time
|
||
.byte 3 +CBIT / 14 = mknod
|
||
.byte 2 +CBIT / 15 = chmod
|
||
.byte 2 +CBIT / 16 = chown
|
||
.byte -1 / 17 = break
|
||
.byte 2 +CBIT / 18 = stat
|
||
.byte 2 +R0_IN +CBIT / 19 = seek
|
||
.byte 0 +R0_OUT / 20 = getpid
|
||
.byte 3 +CBIT / 21 = mount
|
||
.byte 1 +CBIT / 22 = umount
|
||
.byte 0 +R0_IN +CBIT / 23 = setuid
|
||
.byte 0 +R0_OUT / 24 = getuid
|
||
.byte 0 +R1_IN +R0_IN +CBIT / 25 = stime
|
||
.byte 3 +R0_IN +R0_OUT +CBIT / 26 = ptrace
|
||
.byte 0 +R0_IN +R0_OUT / 27 = alarm
|
||
.byte 1 +R0_IN +CBIT / 28 = fstat
|
||
.byte 0 / 29 = pause
|
||
.byte -1 / 30 = x
|
||
.byte 1 +R0_IN +CBIT / 31 = stty
|
||
.byte 1 +R0_IN +CBIT / 32 = gtty
|
||
.byte 2 +CBIT / 33 = access
|
||
.byte 0 +R0_IN +CBIT / 34 = nice
|
||
.byte 0 +R0_IN / 35 = sleep
|
||
.byte 0 / 36 = sync
|
||
.byte 1 +R0_IN +CBIT / 37 = kill
|
||
.byte 0 +R0_OUT / 38 = csw
|
||
.byte -1 / 39 = x
|
||
.byte 0 +R0_IN +R0_OUT +R1_OUT +CBIT / 40 = tell
|
||
.byte 0 +R0_IN +R0_OUT +CBIT / 41 = dup
|
||
.byte 0 +R0_OUT +R1_OUT +CBIT / 42 = pipe
|
||
.byte 1 / 43 = times
|
||
.byte 4 / 44 = prof
|
||
.byte -1 / 45 = x
|
||
.byte 0 +R0_IN +CBIT / 46 = setgid
|
||
.byte 0 +R0_OUT / 47 = getgid
|
||
.byte -1 / 48 = signal
|
||
.byte -1 / 49 = reserved for USG
|
||
.byte -1 / 50 = reserved for USG
|
||
.byte 1 +CBIT / 51 = acct
|
||
.byte -1 / 52 = x
|
||
.byte -1 / 53 = x
|
||
.byte -1 / 54 = x
|
||
.byte -1 / 55 = x
|
||
.byte -1 / 56 = x
|
||
.byte -1 / 57 = x
|
||
.byte -1 / 58 = x
|
||
.byte -1 / 59 = x
|
||
.byte -1 / 60 = x
|
||
.byte -1 / 61 = x
|
||
.byte -1 / 62 = x
|
||
.byte -1 / 63 = x
|
||
.endif
|
||
|
||
.if V7
|
||
.byte -1 / 0 = indir
|
||
.byte 0 / 1 = exit
|
||
.byte -1 / 2 = fork
|
||
.byte 2 +R0_IN +R0_OUT +CBIT / 3 = read
|
||
.byte 2 +R0_IN +R0_OUT +CBIT / 4 = write
|
||
.byte 2 +R0_OUT +CBIT / 5 = open
|
||
.byte 0 +R0_IN +CBIT / 6 = close
|
||
.byte 0 +R0_OUT +R1_OUT +CBIT / 7 = wait
|
||
.byte 2 +R0_OUT +CBIT / 8 = creat
|
||
.byte 2 +CBIT / 9 = link
|
||
.byte 1 +CBIT / 10 = unlink
|
||
.byte -1 / 11 = x no exec in em code
|
||
.byte 1 +CBIT / 12 = chdir
|
||
.byte -1 / 13 = x time is obsolete
|
||
.byte 3 +CBIT / 14 = mknod
|
||
.byte 2 +CBIT / 15 = chmod
|
||
.byte 3 +CBIT / 16 = chown
|
||
.byte -1 / 17 = break
|
||
.byte 2 +CBIT / 18 = stat
|
||
.byte 3 +R0_IN +R0_OUT +R1_OUT +CBIT / 19 = lseek
|
||
.byte 0 +R0_OUT / 20 = getpid
|
||
.byte 3 +CBIT / 21 = mount
|
||
.byte 1 +CBIT / 22 = umount
|
||
.byte 0 +R0_IN +CBIT / 23 = setuid
|
||
.byte 0 +R0_OUT +R1_OUT / 24 = getuid
|
||
.byte 0 +R1_IN +R0_IN +CBIT / 25 = stime
|
||
.byte 3 +R0_IN +R0_OUT +CBIT / 26 = ptrace
|
||
.byte 0 +R0_IN +R0_OUT / 27 = alarm
|
||
.byte 1 +R0_IN +CBIT / 28 = fstat
|
||
.byte 0 / 29 = pause
|
||
.byte 2 +CBIT / 30 = utime
|
||
.byte -1 / 31 = x
|
||
.byte -1 / 32 = x
|
||
.byte 2 +CBIT / 33 = access
|
||
.byte 0 +R0_IN +CBIT / 34 = nice
|
||
.byte 1 / 35 = ftime
|
||
.byte 0 / 36 = sync
|
||
.byte 1 +R0_IN +CBIT / 37 = kill
|
||
.byte -1 / 38 = x
|
||
.byte -1 / 39 = x
|
||
.byte -1 / 40 = x
|
||
.byte 0 +R1_IN +R0_IN +R0_OUT +CBIT / 41 = dup
|
||
.byte 0 +R0_OUT +R1_OUT +CBIT / 42 = pipe
|
||
.byte 1 / 43 = times
|
||
.byte 4 / 44 = prof
|
||
.byte -1 / 45 = x
|
||
.byte 0 +R0_IN +CBIT / 46 = setgid
|
||
.byte 0 +R0_OUT +R1_OUT / 47 = getgid
|
||
.byte -1 / 48 = signal
|
||
.byte -1 / 49 = reserved for USG
|
||
.byte -1 / 50 = reserved for USG
|
||
.byte 1 +CBIT / 51 = acct
|
||
.byte 3 +CBIT / 52 = phys
|
||
.byte 1 +CBIT / 53 = lock
|
||
.byte 3 +CBIT / 54 = ioctl
|
||
.byte -1 / 55 = x
|
||
.byte 2 +CBIT / 56 = mpxcall
|
||
.byte -1 / 57 = x
|
||
.byte -1 / 58 = x
|
||
.byte 3 +CBIT / 59 = exece
|
||
.byte 1 +CBIT / 60 = umask
|
||
.byte 1 +CBIT / 61 = chroot
|
||
.byte -1 / 62 = x
|
||
.byte -1 / 63 = x
|
||
.endif
|
||
|
||
.text
|
||
/------------------------------------------------------------------------------
|
||
/ General subroutines
|
||
/------------------------------------------------------------------------------
|
||
|
||
wrdoff: movb (pcx)+,r0 /get first byte
|
||
swab r0 /put it in high byte
|
||
clrb r0 /clear low byte of r0
|
||
bisb (pcx)+,r0 /"or" second byte in
|
||
rts pc /done
|
||
|
||
/------------------------------------------------------------------------------
|
||
|
||
tstr0: cmp r0,$04; jgt e.oddz;
|
||
cmp r0,$02; jne e.oddz; rts pc
|
||
|
||
chckptr: / this routine traps a pointer outside
|
||
/ the globals, the stack or the heap
|
||
bit $1,2(sp); bne 8f
|
||
chckptb:
|
||
mov 2(sp),r5;
|
||
cmp r5,sp; bhis 9f
|
||
cmp r5,hp; bhis 8f
|
||
.if .count + .prof + .flow
|
||
cmp r5,tblmax; bhis 9f
|
||
cmp r5,globmax; bhis 8f
|
||
.endif
|
||
cmp r5,eb; bhis 9f
|
||
8: jsr pc,e.badptr
|
||
9: rts pc
|
||
|
||
.if .last
|
||
nexttab: mov linused,r5;
|
||
add $2,r5 / increment lasttab
|
||
cmp r5,$linused / top of table reached?
|
||
blo 1f
|
||
sub $96.,r5
|
||
1: mov r5,linused
|
||
rts pc
|
||
.endif
|
||
regsave:
|
||
mov r5,savearea
|
||
mov $[savearea+2],r5
|
||
mov r4,(r5)+
|
||
mov r3,(r5)+
|
||
mov r2,(r5)
|
||
rts pc
|
||
regretu:
|
||
mov $[savearea+6],r5
|
||
mov (r5),r2
|
||
mov -(r5),r3
|
||
mov -(r5),r4
|
||
mov -(r5),r5
|
||
rts pc
|
||
|
||
setfloat:
|
||
cmp r0,$8.
|
||
bne 1f
|
||
setd
|
||
rts pc
|
||
1: cmp r0,$04
|
||
bne 3f
|
||
setf
|
||
2: rts pc
|
||
3: jmp e.oddz
|
||
setint:
|
||
cmp r0,$04
|
||
bne 4f
|
||
setl
|
||
rts pc
|
||
4: cmp r0,$02
|
||
bne 3b
|
||
seti
|
||
5: rts pc
|
||
|
||
|
||
|
||
/------------------------------------------------------------------------------
|
||
/ Leftover data
|
||
/------------------------------------------------------------------------------
|
||
|
||
|
||
|
||
|
||
.bss
|
||
filb: .=.+2
|
||
curproc:.=.+2
|
||
linmax: .=.+2
|
||
countptr:.=.+2
|
||
countfld:.=.+2
|
||
hiprof: .=.+2
|
||
loprof: .=.+2
|
||
ignmask:.=.+2 / ignore mask for trap
|
||
retsize:.=.+2 / size of return value of function
|
||
retarea:.=.+8 / return area for function value
|
||
savearea: .=.+8 / save register area
|
||
saver0: .=.+2
|
||
saver1: .=.+2
|
||
header:
|
||
txtsiz: .=.+2 / program textsize in bytes
|
||
ndatad: .=.+2 / number of loadfile descriptors
|
||
nprocs: .=.+2 / number of entries in procedure descriptors
|
||
option: entry.: .=.+2 / procedure number to start
|
||
nlines: .=.+2 / maximum sorceline number
|
||
szdata: .=.+2 / address of lowest uninitialized byte
|
||
firstp: .=.+2 / descriptor address first basic block of text
|
||
maxcount: .=.+2 / total number of processable source lines
|
||
argc: .=.+2
|
||
argv: .=.+2
|
||
environ:
|
||
.=.+2
|
||
pb: .=.+2
|
||
pd: .=.+2
|
||
eb: .=.+2
|
||
globmax:
|
||
.=.+2
|
||
tblmax: .=.+2
|
||
ml: .=.+2
|
||
.if .last
|
||
lasttab:.=.+96. / 16 descriptors of integers + index at the end
|
||
linused:.=.+2
|
||
.endif
|
||
|
||
.if .opfreq
|
||
counttab:
|
||
.=.+1664.
|
||
.endif
|
||
|
||
.if .count
|
||
lcount: .=.+2
|
||
countsiz:.=.+2
|
||
.endif
|
||
|
||
.if .flow
|
||
lflow: .=.+2
|
||
flowsiz:.=.+2
|
||
.endif
|
||
|
||
.if .prof
|
||
ltime: .=.+2
|
||
profsiz:.=.+2
|
||
.endif
|
||
|
||
hp: .=.+2
|