; Copyright 1996 Acorn Computers Ltd
;
; Licensed under the Apache License, Version 2.0 (the "License");
; you may not use this file except in compliance with the License.
; You may obtain a copy of the License at
;
; http://www.apache.org/licenses/LICENSE-2.0
;
; Unless required by applicable law or agreed to in writing, software
; distributed under the License is distributed on an "AS IS" BASIS,
; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
; See the License for the specific language governing permissions and
; limitations under the License.
;
TTL => Arthur3
; the IF command
IF_Code ROUT
Push "R2, lr"
LDR R2, =GeneralMOSBuffer
01
LDRB R1, [R0], #1
STRB R1, [R2], #1
CMP R1, #10
CMPNE R1, #13
CMPNE R1, #0
BEQ NoTHEN
CMP R1, #" "
BNE %BT01
LDRB R1, [R0]
CMP R1, #"t"
CMPNE R1, #"T"
BNE %BT01
LDRB R1, [R0, #1]
CMP R1, #"h"
CMPNE R1, #"H"
BNE %BT01
LDRB R1, [R0, #2]
CMP R1, #"e"
CMPNE R1, #"E"
BNE %BT01
LDRB R1, [R0, #3]
CMP R1, #"n"
CMPNE R1, #"N"
BNE %BT01
LDRB R1, [R0, #4]
CMP R1, #" "
CMPNE R1, #13
CMPNE R1, #10
CMPNE R1, #0
BNE %BT01
MOV R1, #13
STRB R1, [R2, #-1]
ADD R0, R0, #4 ; skip THEN
Push "R0"
LDR R0, =GeneralMOSBuffer
MOV R2, #-1 ; integers only mate
SWI XOS_EvaluateExpression
BVS WantInteger
Pull "R1"
CMP R2, #0
BEQ %FT02 ; false
LDR R2, =GeneralMOSBuffer
03
LDRB R0, [R1], #1
STRB R0, [R2], #1
CMP R0, #10
CMPNE R0, #13
CMPNE R0, #0
BEQ %FT04
CMP R0, #" "
BLEQ %FT05
BNE %BT03
04
MOV R0, #13
STRB R0, [R2, #-1]
LDR R0, =GeneralMOSBuffer
07
SWI XOS_CLI
06
Pull "R2, PC"
05
LDRB R0, [R1]
CMP R0, #"e"
CMPNE R0, #"E"
MOVNE PC, lr
LDRB R0, [R1, #1]
CMP R0, #"l"
CMPNE R0, #"L"
MOVNE PC, lr
LDRB R0, [R1, #2]
CMP R0, #"s"
CMPNE R0, #"S"
MOVNE PC, lr
LDRB R0, [R1, #3]
CMP R0, #"e"
CMPNE R0, #"E"
MOVNE PC, lr
LDRB R0, [R1, #4]
CMP R0, #" "
CMPNE R1, #13
CMPNE R1, #10
CMPNE R1, #0
MOV PC, lr
02
LDRB R0, [R1], #1
CMP R0, #10
CMPNE R0, #13
CMPNE R0, #0
BEQ %BT06
CMP R0, #" "
BLEQ %BT05
BNE %BT02
ADD R0, R1, #4
B %BT07
NoTHEN ROUT
ADR R0, %FT01
[ International
BL TranslateError
]
IfError
SETV
Pull "R2, pc"
01
& ErrorNumber_Syntax
= "NoThen:There is no THEN", 0
ALIGN
WantInteger ROUT
CMP R1, #0
Pull "R1"
BNE %FT10
SETV
Pull "R2, pc" ; integer returned, so leave expranal error there
10
ADR R0, %FT01
[ International
BL TranslateError
]
B IfError
01
& ErrorNumber_Syntax
= "IsString:Expression is a string", 0
ALIGN
;************************************************************************
; the expression analysis SWI
; truth values
Expr_True * -1
Expr_False * 0
; Type symbols
type_Integer * 0
type_String * 1
type_Operator * 2
; operators :
; single char syms have their ascii value
op_Bra * "(" ; 40
op_Ket * ")" ; 41
op_Times * "*" ; 42
op_Plus * "+" ; 43
op_Minus * "-" ; 45
op_Divide * "/" ; 47
op_LT * "<" ; 60
op_EQ * "=" ; 61
op_GT * ">" ; 62
; now fill in some gaps
op_NE * 44 ; <>
op_STR * 46 ; STR
op_GE * 48 ; >=
op_LE * 49 ; <=
op_RShift * 50 ; >>
op_LShift * 51 ; <<
op_AND * 52 ; AND
op_OR * 53 ; OR
op_EOR * 54 ; EOR
op_NOT * 55 ; NOT
op_Right * 56 ; RIGHT
op_Left * 57 ; LEFT
op_MOD * 58 ; MOD
op_Bottom * 59
op_VAL * 63 ; VAL
op_LRShift * 64 ; >>>
op_LEN * 65 ; LEN
; TMD 12-Sep-89 - add separate tokens for monadic versions of + and -
op_UnaryPlus * 66 ; unary plus
op_UnaryMinus * 67 ; unary minus
; so 40-67 inclusive is filled.
MACRO
$label ePush $reglist
LCLS temps
LCLL onereg
temps SETS "$reglist"
onereg SETL {TRUE}
WHILE onereg :LAND: :LEN: temps > 0
[ temps :LEFT: 1 = "," :LOR: temps :LEFT: 1 = "-"
onereg SETL {FALSE}
]
temps SETS temps :RIGHT: (:LEN: temps - 1)
WEND
[ onereg
$label STR $reglist, [R11, #-4]!
|
$label STMFD R11!, {$reglist}
]
CMP R11, R10
BLE StackOFloErr
MEND
MACRO
$label ePull $reglist, $writeback, $cc
LCLS temps
LCLL onereg
temps SETS "$reglist"
onereg SETL {TRUE}
WHILE onereg :LAND: :LEN: temps > 0
[ temps :LEFT: 1 = "," :LOR: temps :LEFT: 1 = "-"
onereg SETL {FALSE}
]
temps SETS temps :RIGHT: (:LEN: temps - 1)
WEND
[ onereg
[ "$writeback" = ""
LDR$cc $reglist, [R11], #4
|
LDR$cc $reglist, [R11]
]
|
[ "$writeback" = ""
LDM$cc.FD R11!, {$reglist}
|
LDM$cc.FD R11, {$reglist}
]
]
MEND
;*************************************************************************
; SWI EvalExp.
; In : R0 -> string
; R1 -> buffer
; R2 maxchars
; Out : R0 unchanged.
; IF R1 = 0, R2 is an integer
; IF R1<>0, buffer has a string, length in R2.
; V set if bad expression, buffer overflow
;*************************************************************************
ExprBuffOFlo ROUT
ADRL R0, ErrorBlock_BuffOverflow
[ International
BL TranslateError
]
STR R0, [stack]
Pull "R0-R4, lr"
B SLVK_SetV
ReadExpression_Error
LDR R5, [stack], #8
[ International
BL TranslateError
]
Pull "R1-R4, lr"
B SLVK_SetV
ReadExpression ROUT
Push "R0-R4, lr"
CLRPSR I_bit, R12 ; interrupts on, ta.
LDR R12, =ExprWSpace
STR R13, ExprSVCstack
; Historically in violation of the behaviour documented in the
; Programmer's Reference Manual the expression was passed to
; OS_GSTrans, which would transform a reasonable expression such as
; "<Alias$@RunType_FFB>"="" into "Basic -quit "%0" %*1"="" which
; is not a valid expression.
;
; Unfortunately merely removing this transformation breaks
; software that references system variable using angle brackets
; but not quote marks. eg. SetEval ZapFonts$OSVsn <Zap$OSVsn>
;
; Instead process the unquoted parts of the expression using
; OS_GSRead, using the internal flags to detect when a variable
; is being expanded.
; Register allocation for code below:
; R0 = Pointer to expression passed by caller
; R1 = Character read
; R2 = GSRead flags
; R3 = pointer into ExprBuff
; R4 = bytes remaining in output buffer - 1
; R5 = flag to indicate not in quoted string
Push "R5"
LDR R3, =ExprBuff
MOV R4, #LongCLISize
MOV R2, #GS_NoQuoteMess | GS_NoVBarStuff
SUBS R4, R4, #2
SWI XOS_GSInit
BVS ReadExpression_Error
MOV R5, #0x100
00 ; If OS_GSRead is reading a system variable, or outside quotes
; then use OS_GSRead, else read directly.
TST R2, #GS_ReadingString | GS_Macroing
TSTEQ R5, #0x100 ; Clears C
LDREQB R1, [R0], #1
SWINE XOS_GSRead
BVS ReadExpression_Error
; Check for end of expression
BCS %FT00
CMP R1, #13
CMPNE R1, #10
CMPNE R1, #0
BEQ %FT00
; Write character into buffer, check for overflow.
STRB R1, [R3], #1
SUBS R4, R4, #1
BMI ExprBuffOFlo
; Toggle quote flag if needed and continue loop
TEQ R1, #""""
EOREQ R5, R5, #0x100
B %BT00
00 ; Write terminator
MOV R0, #13
STRB R0, [R3]
LDR R1, =ExprBuff
Pull "R5"
LDR R11, =ExprStackStart
LDR R10, =ExprStackLimit
MOV R0, #0
STRB R0, exprBracDif
MOV R0, #type_Operator
MOV R2, #op_Bottom
STRB R2, tos_op
STMFD R11!, {R0, R2} ; push "bottom"
; All set : now chug round items.
01
BL GetFactor
CMP R0, #type_Operator
BNE %BT01
CMP R2, #op_Ket
BNE %FT02
LDRB R3, exprBracDif
[ {TRUE} ; TMD 11-Sep-89 - save an instruction
SUBS R3, R3, #1
BCC BadBraErr
|
CMP R3, #0
BEQ BadBraErr
SUB R3, R3, #1
]
STRB R3, exprBracDif
03
LDRB R3, tos_op
CMP R3, #op_Bra
BEQ %FT55
BL compile_top_op
B %BT03
55
ePull "R0, R2"
CMP R0, #type_Operator
BEQ MissingOpErr
CMP R0, #type_String
BLEQ Pull_String
Push "R0, R2"
ePull "R0, R2"
CMP R0, #type_Operator
BNE MissingOrErr ; discard "("
ePull "R0, R2", No
CMP R0, #type_Operator
BNE MissingOrErr
STRB R2, tos_op ; reset tosop
Pull "R0, R2"
CMP R0, #type_String
BLEQ Push_String
ePush "R0, R2" ; move temp result down.
B %BT01
02
CMP R2, #op_Bra
LDREQB R3, exprBracDif
ADDEQ R3, R3, #1
STREQB R3, exprBracDif ; bracdif +:= 1
; TMD 12-Sep-89 - now check for unary plus or minus
CMP R2, #op_Plus ; if EQ then CS
TEQNE R2, #(op_Minus :SHL: 2),2 ; if EQ then CC
ePull "R0, R4", No, EQ ; if +/- and top item is op
TEQEQ R0, #type_Operator, 0 ; then it's unary plus/minus
BNE %FT10 ; else normal
MOVCS R2, #op_UnaryPlus ; CS => unary plus
MOVCC R2, #op_UnaryMinus ; CC => unary minus
10
; WHILE lp (tos.op) > rp (itemtype) DO compile.top.op ()
ADR R4, rightprectab-op_Bra
LDRB R4, [R4, R2]
04
ADR R0, leftprectab-op_Bra
LDRB R3, tos_op
LDRB R0, [R0, R3]
CMP R0, R4
BLE %FT75
BL compile_top_op
B %BT04
75
MOV R0, #type_Operator
ePush "R0, R2" ; push (operator)
STRB R2, tos_op
CMP R2, #op_Bottom
BNE %BT01
; check proper expr, return it.
; should have bum/result/bum on stack.
ePull "R0, R2" ; this one's forced to be bottom
ePull "R0, R2"
CMP R0, #type_Operator
BEQ MissingOpErr
CMP R0, #type_String
BLEQ Pull_String
Push "R0, R2"
ePull "R0, R2"
CMP R0, #type_Operator ; if an op's there, it has to be bottom
Pull "R1, R2"
BNE MissingOpErr
Pull "R0, R3, R4" ; original R1, R2 -> R3, R4
CMP R1, #type_Integer
Pull "R3, R4, lr", EQ
ExitSWIHandler EQ
CMP R4, R2
BGE ExprBuffOK
MOV R2, R4 ; no chars to move.
ADRL R0, BufferOFloError
LDR lr, [stack, #4*2]
ORR lr, lr, #V_bit
STR lr, [stack, #4*2]
ExprBuffOK
MOV R1, R3
LDR R4, =exprSTRACC ; get ptr to it.
Push "R2"
06
SUBS R2, R2, #1
LDRPLB R3, [R4, R2]
STRPLB R3, [R1, R2]
BPL %BT06
Pull "R2-R4, lr"
ExitSWIHandler
leftprectab
; Bra Ket Time Plus NE Minu STR Divi GE LE RShi LShift
= 2, 1, 8, 7, 6, 7, 9, 8, 6, 6, 6, 6
; AND OR EOR NOT Righ Left MOD Bott LT EQ GT VAL LRSh
= 5, 4, 4, 9, 9, 9, 8, 1, 6, 6, 6, 9, 6
; LEN Un+ Un-
= 9, 9, 9
rightprectab
; Bra Ket Time Plus NE Minu STR Divi GE LE RShi LShift
= 11, 0, 7, 6, 5, 6, 10, 7, 5, 5, 5, 5
; AND OR EOR NOT Righ Left MOD Bott LT EQ GT VAL LRSh
= 4, 3, 3, 10, 10, 10, 7, 1, 5, 5, 5, 10, 5
; LEN Un+ Un-
= 10, 10, 10
ALIGN
;*****************************************************************************
compile_top_op ROUT
; corrupts the flags
Push "R2-R4, lr"
ePull "R0, R2"
CMP R0, #type_Operator
BEQ MissingOpErr ; everybody needs a rhs op
CMP R0, #type_String
BLEQ Pull_String
ePull "R3, R4" ; must be tosop
CMP R3, #type_Operator
BNE MissingOrErr
SUB R4, R4, #op_Bra
ADR R3, Operator_Dispatch
LDR R4, [R3, R4, LSL #2]
ADD PC, R3, R4
DispatchReturn
ePull "R3, R4", No ; pull with no writeback
CMP R3, #type_Operator
BNE MissingOrErr
STRB R4, tos_op
CMP R0, #type_String
BLEQ Push_String
ePush "R0, R2" ; temp val -> stack
Pull "R2-R4, PC"
; the routines in this table are entered with one operand popped,
; any other op on stack ready to pop.
; Return with temp val set up (R0, R2 and maybe exprSTRACC)
; Can use R0, R2-R4 as reqd
Operator_Dispatch
& Bra_Code - Operator_Dispatch
& 0 ; Ket_Code - Operator_Dispatch - can't happen
& Times_Code - Operator_Dispatch
& Plus_Code - Operator_Dispatch
& NE_Code - Operator_Dispatch
& Minus_Code - Operator_Dispatch
& STR_Code - Operator_Dispatch
& Divide_Code - Operator_Dispatch
& GE_Code - Operator_Dispatch
& LE_Code - Operator_Dispatch
& RShift_Code - Operator_Dispatch
& LShift_Code - Operator_Dispatch
& AND_Code - Operator_Dispatch
& OR_Code - Operator_Dispatch
& EOR_Code - Operator_Dispatch
& NOT_Code - Operator_Dispatch
& Right_Code - Operator_Dispatch
& Left_Code - Operator_Dispatch
& MOD_Code - Operator_Dispatch
& 0 ; Bottom_Code - Operator_Dispatch - can't happen
& LT_Code - Operator_Dispatch
& EQ_Code - Operator_Dispatch
& GT_Code - Operator_Dispatch
& VAL_Code - Operator_Dispatch
& LRShift_Code- Operator_Dispatch
& LEN_Code- Operator_Dispatch
& UnPlus_Code- Operator_Dispatch
& UnMinus_Code- Operator_Dispatch
;**************************************************************************
; dispatch routines
;--------------------------------------------------------------------------
; monadic operators
VAL_Code ROUT ; VAL string (VAL integer is NOP)
UnPlus_Code ROUT ; + integer (same code as VAL)
CMP R0, #type_String
BLEQ StringToInteger
B DispatchReturn
STR_Code ROUT ; STR integer (STR string is NOP)
CMP R0, #type_Integer
BLEQ IntegerToString
B DispatchReturn
LEN_Code ROUT ; LEN string
CMP R0, #type_Integer
BLEQ IntegerToString
MOV R0, #type_Integer ; and R2 is length!
B DispatchReturn
NOT_Code ROUT ; NOT integer
CMP R0, #type_String
BLEQ StringToInteger
MVN R2, R2
B DispatchReturn
UnMinus_Code ROUT ; - integer
CMP R0, #type_String
BLEQ StringToInteger
RSB R2, R2, #0
B DispatchReturn
;--------------------------------------------------------------------------
; diadic plus
Plus_Code ROUT ; integer+integer ; string+string
ePull "R3, R4"
; CMP R3, #type_Operator ; can't be operator as unary plus
; BEQ %FT01 ; is separately dispatched now
CMP R0, #type_String
BEQ %FT02
CMP R3, #type_String
BLEQ PullStringToInteger ; in R4
ADD R2, R2, R4
B DispatchReturn
02
CMP R3, #type_String
BEQ %FT03
BL StringToInteger
ADD R2, R2, R4
B DispatchReturn
03
ADD R0, R2, R4
CMP R0, #LongCLISize
BGE StrOFloErr
LDR R3, =exprSTRACC
Push "R0" ; new length
ADD R0, R3, R0
ADD R3, R3, R2
; copy R2 bytes from --(R3) to --(R0)
04
SUBS R2, R2, #1
LDRGEB R4, [R3, #-1]!
STRGEB R4, [R0, #-1]!
BGE %BT04
; R0-exprSTRACC is no of chars in stacked string
LDR R3, =exprSTRACC
SUB R0, R0, R3
05
SUBS R0, R0, #1
LDRGEB R2, [R11], #1
STRGEB R2, [R3], #1
BGE %BT05
ADD R11, R11, #3
BIC R11, R11, #3 ; realign stack
Pull "R2"
MOV R0, #type_String
B DispatchReturn
Minus_Code ROUT ; integer-integer
; ePull "R3, R4", No ; can't be unary minus - this is
; CMP R3, #type_Operator ; separately dispatched now
; BEQ %FT01
BL TwoIntegers
SUB R2, R4, R2
B DispatchReturn
;---------------------------------------------------------------------------
; integer pair only : maths
Times_Code ROUT ; integer*integer
BL TwoIntegers
MOV R3, R2
MUL R2, R4, R3 ; get R3*R4->R2
B DispatchReturn
MOD_Code ROUT ; integer MOD integer
Push "R5"
MOV R5, #&80000000
B DivModCommon
Divide_Code ROUT ; integer/integer
Push "R5"
MOV R5, #0
DivModCommon
BL TwoIntegers ; want R4/R2
CMP R2, #0
Pull "R5", EQ
BEQ DivZeroErr
RSBMI R2, R2, #0
EORMIS R5, R5, #1
EORMI R5, R5, #1 ; oops-wanted MOD, ignore this sign
CMP R4, #0
EORMI R5, R5, #1
RSBMI R4, R4, #0
DivRem R3, R4, R2, R0 ; R3 := R4 DIV R2; R4 := R4 REM R2
MOVS R5, R5, LSL #1 ; CS if MOD, NE if -ve
MOVCS R2, R4
MOVCC R2, R3
RSBNE R2, R2, #0
MOV R0, #type_Integer
Pull "R5"
B DispatchReturn
;---------------------------------------------------------------------------
; integer pair only : logical
AND_Code ROUT ; integer AND integer
BL TwoIntegers
AND R2, R2, R4
B DispatchReturn
OR_Code ROUT ; integer OR integer
BL TwoIntegers
ORR R2, R2, R4
B DispatchReturn
EOR_Code ROUT ; integer EOR integer
BL TwoIntegers
EOR R2, R2, R4
B DispatchReturn
;----------------------------------------------------------------------------
; mixed operands
Right_Code ROUT ; string RIGHT integer
CMP R0, #type_Integer
BLNE StringToInteger
MOV R4, R2
ePull "R0, R2"
CMP R0, #type_String
BNE %FT01
BL Pull_String
02 ; string in stracc, R2 chars available, R4 chars wanted.
CMP R2, R4
BLO DispatchReturn ; ignore if R4 -ve or bigger than available
LDR R0, =exprSTRACC
ADD R3, R0, R2
SUB R3, R3, R4 ; mov from R3 to R0, R4 bytes
03
LDRB R2, [R3], #1
SUBS R4, R4, #1
STRGEB R2, [R0], #1
BGE %BT03
LDR R2, =exprSTRACC
SUB R2, R0, R2 ; get length back.
MOV R0, #type_String
B DispatchReturn
01
CMP R0, #type_Operator
BEQ MissingOpErr
BL IntegerToString
B %BT02
Left_Code ROUT ; string LEFT integer
CMP R0, #type_Integer
BLNE StringToInteger
MOV R4, R2
ePull "R0, R2"
CMP R0, #type_String
BNE %FT01
BL Pull_String
02
CMP R4, R2
MOVLO R2, R4 ; only use new length if +ve and < current length
B DispatchReturn
01
CMP R0, #type_Operator
BEQ MissingOpErr
BL IntegerToString
B %BT02
;-----------------------------------------------------------------------
; relational operators
EQ_Code ROUT ; integer = integer ; string = string
BL Comparison
MOVEQ R2, #Expr_True
MOVNE R2, #Expr_False
B DispatchReturn
NE_Code ROUT ; integer<>integer ; string<>string
BL Comparison
MOVNE R2, #Expr_True
MOVEQ R2, #Expr_False
B DispatchReturn
GT_Code ROUT ; integer > integer ; string>string
BL Comparison
MOVGT R2, #Expr_True
MOVLE R2, #Expr_False
B DispatchReturn
LT_Code ROUT ; integer < integer ; string<string
BL Comparison
MOVLT R2, #Expr_True
MOVGE R2, #Expr_False
B DispatchReturn
GE_Code ROUT ; integer >= integer ; string>=string
BL Comparison
MOVGE R2, #Expr_True
MOVLT R2, #Expr_False
B DispatchReturn
LE_Code ROUT ; integer <= integer ; string<=string
BL Comparison
MOVLE R2, #Expr_True
MOVGT R2, #Expr_False
B DispatchReturn
;--------------------------------------------------------------------------
; shift operators
RShift_Code ROUT ; integer >> integer
BL TwoIntegers
CMP R2, #0
RSBLT R2, R2, #0
BLT NegRShift
NegLShift
CMP R2, #32
MOVGE R2, R4, ASR #31 ; sign extend all through
MOVLT R2, R4, ASR R2
B DispatchReturn
LRShift_Code ROUT ; integer >>> integer
BL TwoIntegers
CMP R2, #0
RSBLT R2, R2, #0
BLT NegRShift
CMP R2, #32
MOVGE R2, #0
MOVLT R2, R4, LSR R2
B DispatchReturn
LShift_Code ROUT ; integer << integer
BL TwoIntegers
CMP R2, #0
RSBLT R2, R2, #0
BLT NegLShift
NegRShift
CMP R2, #32
MOVGE R2, #0
MOVLT R2, R4, LSL R2
B DispatchReturn
;---------------------------------------------------------------------------
; Support routines :
TwoIntegers ROUT
Push "lr"
CMP R0, #type_String
BLEQ StringToInteger
ePull "R3, R4"
CMP R3, #type_Operator
BEQ MissingOpErr
CMP R3, #type_String
BLEQ PullStringToInteger
Pull "PC"
Comparison ROUT
Push "lr"
ePull "R3, R4"
CMP R3, #type_Operator
BEQ MissingOpErr
CMP R0, #type_String
BEQ %FT01
CMP R3, #type_String
BLEQ PullStringToInteger
CMP R4, R2
Pull "PC"
01
CMP R3, #type_String
BEQ %FT02
BL StringToInteger
CMP R4, R2
Pull "PC"
02
MOV R3, R11
ADD R11, R11, R4
ADD R11, R11, #3
BIC R11, R11, #3
; $R3, length R4 against $exprSTRACC, length R2
Push "R1, R2, R4, R5"
CMP R2, R4
MOVGT R2, R4 ; minm length -> R2
LDR R0, =exprSTRACC
03
SUBS R2, R2, #1
BLT %FT04
LDRB R1, [R0], #1
LDRB R5, [R3], #1
CMP R5, R1
BEQ %BT03
MOV R0, #type_Integer
Pull "R1, R2, R4, R5, PC"
04
Pull "R1, R2, R4, R5"
CMP R4, R2
MOV R0, #type_Integer
Pull "PC"
StringToInteger ROUT
Push "R1, R3, R4, lr"
LDR R1, =exprSTRACC
ADD R3, R1, R2 ; end pointer to check all string used.
MOV R0, #13
STRB R0, [R1, R2] ; force terminator in
01
LDRB R0, [R1], #1
CMP R0, #" "
BEQ %BT01
MOV R4, #0
CMP R0, #"-"
MOVEQ R4, #-1
CMPNE R0, #"+"
SUBNE R1, R1, #1
MOV R0, #10
SWI XOS_ReadUnsigned
02
LDRB R0, [R1], #1
CMP R0, #" "
BEQ %BT02
SUB R1, R1, #1
CMP R1, R3
BNE BadIntegerErr
MOV R0, #type_Integer
CMP R4, #0
RSBNE R2, R2, #0
Pull "R1, R3, R4, PC"
IntegerToString ROUT
Push "R1, lr"
MOV R0, R2
LDR R1, =exprSTRACC
MOV R2, #LongCLISize
SUB R2, R2, #1
SWI XOS_BinaryToDecimal
MOV R0, #type_String
Pull "R1, PC"
PullStringToInteger ROUT ; corrupts exprSTRACC
Push "R0, R2, lr"
MOV R2, R4
BL Pull_String
BL StringToInteger
MOV R4, R2
MOV R3, #type_Integer
Pull "R0, R2, PC"
;******************************************************************************
GetFactor ROUT
; return type in R0
; if operator, R2 has op_xxx
; if integer/string, it has been pushed
; R1 updated, R2 corrupted.
10
LDRB R0, [R1], #1
CMP R0, #" "
BEQ %BT10
CMP R0, #13
BNE %FT11
MOV R2, #op_Bottom
MOV R0, #type_Operator
MOV PC, lr
31
CMP R0, #"@"-1 ; chars >= "@" are OK
BGT %FT32
CMP R0, #" " ; chars <= " " always terminate
MOVLE PC, lr
Push "R2, R3"
ADR R2, terminatename_map-"!"
LDRB R3, [R2, R0] ; termination map for " " < char < "@"
CMP R3, #0
Pull "R2, R3"
MOVEQ PC, lr
32
STRB R0, [R3], #1
MOV PC, lr ; return with GT for OK, LE for naff
terminatename_map ; 1 means character allowed
; ! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ?
= 1, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1
ALIGN
11
CMP R0, #"&" ; hex number?
CMPNE R0, #"0"
RSBGTS R2, R0, #"9"
BGE %FT03 ; got to get a number.
CMP R0, #""""
BEQ %FT04 ; string.
; look for operator
Push "R3"
ADR R2, operator_table
20
LDRB R3, [R2], #1
CMP R3, #0 ; end of table?
BEQ %FT30
CMP R0, R3
BEQ %FT21
22
LDRB R3, [R2], #1
CMP R3, #0
BNE %BT22
ADD R2, R2, #1 ; skip op_xxx
B %BT20
21
Push "R1"
24
LDRB R3, [R2], #1
CMP R3, #0
BEQ %FT23
LDRB R0, [R1], #1
CMP R0, R3
BEQ %BT24
Pull "R1"
LDRB R0, [R1, #-1]
B %BT22
23
Pull "R3" ; junk R1
Pull "R3"
LDRB R2, [R2]
MOV R0, #type_Operator
MOV PC, lr ; got an operator.
30
LDR R3, =exprSTRACC
; assume variable name : try and read it.
Push "lr"
BL %BT31 ; check R0 for allowed in name, insert.
BLE NaffItemErr
33
LDRB R0, [R1], #1
BL %BT31
BGT %BT33
SUB R1, R1, #1
MOV R0, #13
STRB R0, [R3], #1
; potential name in exprSTRACC
Push "R1, R4"
LDR R0, =exprSTRACC
MOV R2, #-1 ; just test for existence first
MOV R3, #0
MOV R4, #0 ; no expansion
SWI XOS_ReadVarVal
CMP R2, #0
BEQ NaffItemErr
LDR R1, =exprSTRACC ; overwrite name with value
MOV R0, R1 ; overwritten by VSet return
MOV R2, #LongCLISize
SUB R2, R2, #1
MOV R3, #0
CMP R4, #VarType_Macro
MOVEQ R4, #VarType_Expanded
SWI XOS_ReadVarVal
BVS StrOFloErr
CMP R4, #VarType_Number
LDREQ R2, [R1]
MOVEQ R0, #type_Integer
BLNE Push_String
MOVNE R0, #type_String
ePush "R0, R2"
Pull "R1, R4, lr"
Pull "R3"
MOV PC, lr
operator_table
= "(" , 0, op_Bra
= ")" , 0, op_Ket
= "+" , 0, op_Plus
= "-" , 0, op_Minus
= "*" , 0, op_Times
= "/" , 0, op_Divide
= "=" , 0, op_EQ
= "<>" , 0, op_NE
= "<=" , 0, op_LE
= "<<" , 0, op_LShift
= "<" , 0, op_LT
= ">=" , 0, op_GE
= ">>>" , 0, op_LRShift
= ">>" , 0, op_RShift
= ">" , 0, op_GT
= "AND" , 0, op_AND
= "OR" , 0, op_OR
= "EOR" , 0, op_EOR
= "NOT" , 0, op_NOT
= "RIGHT", 0, op_Right
= "LEFT" , 0, op_Left
= "MOD" , 0, op_MOD
= "STR" , 0, op_STR
= "VAL" , 0, op_VAL
= "LEN" , 0, op_LEN
= 0
ALIGN
03
SUB R1, R1, #1 ; point at string start
Push "lr"
MOV R0, #10
SWI XOS_ReadUnsigned
LDRVS R13, ExprSVCstack
BVS BumNumber2 ; already messagetransed, so don't do it again MED-01583
MOV R0, #type_Integer
ePush "R0, R2"
Pull "PC"
ExprErrCommon
BumNumber
LDR R13, ExprSVCstack
[ International
BL TranslateError
]
BumNumber2
STR R0, [stack]
Pull "R0-R4, lr"
MOV R1, #0 ; haven't put anything in buffer
B SLVK_SetV
BadStringErr
ADRL R0, ErrorBlock_BadString
B ExprErrCommon
Bra_Code
BadBraErr
ADR R0, ErrorBlock_BadBra
B ExprErrCommon
MakeErrorBlock BadBra
StackOFloErr
ADR R0, ErrorBlock_StkOFlo
B ExprErrCommon
MakeErrorBlock StkOFlo
MissingOpErr
ADR R0, ErrorBlock_MissOpn
B ExprErrCommon
MakeErrorBlock MissOpn
MissingOrErr
ADR R0, ErrorBlock_MissOpr
B ExprErrCommon
MakeErrorBlock MissOpr
BadIntegerErr
ADR R0, ErrorBlock_BadInt
B ExprErrCommon
MakeErrorBlock BadInt
StrOFloErr
ADR R0, ErrorBlock_StrOFlo
B ExprErrCommon
MakeErrorBlock StrOFlo
NaffItemErr
ADR R0, ErrorBlock_NaffItm
B ExprErrCommon
MakeErrorBlock NaffItm
DivZeroErr
ADR R0, ErrorBlock_DivZero
B ExprErrCommon
MakeErrorBlock DivZero
05 LDR R13, ExprSVCstack
B BumNumber2
04
Push "lr"
SUB R0, R1, #1
LDR R1, =exprSTRACC
MOV R2, #LongCLISize
ORR R2, R2, #GS_NoVBarStuff | GS_Spc_term
SWI XOS_GSTrans
BCS ExprBuffOFlo
BVS %BT05
MOV R1, R0
BL Push_String
ePush "R0, R2"
Pull "PC"
Push_String ROUT
Push "R2, R3"
SUBS R2, R2, #1
BMI %FT02
BIC R2, R2, #3
LDR R0, =exprSTRACC
01
LDR R3, [R0, R2]
ePush "R3"
SUBS R2, R2, #4
BGE %BT01
02
Pull "R2, R3"
MOV R0, #type_String
MOV PC, lr
Pull_String ROUT
CMP R2, #0
MOVEQ PC, lr
Push "R0, R2, R3"
LDR R0, =exprSTRACC
01
ePull "R3"
STR R3, [R0], #4
SUBS R2, R2, #4
BGT %BT01
Pull "R0, R2, R3"
MOV PC, lr
LTORG
;*****************************************************************************
; Configure and Status
; The configuration table : some types and macros first.
ConType_NoParm * 1
ConType_Field * 2
ConType_Special * 3
ConType_Size * 4
; Type Special has another table :
; code to set it
; code to show it
; string to print for Configure listing.
; Keep table position as offset from table entry
MACRO
Config_Special $name
= ConType_Special, "$name", 0
ALIGN
& Config_$name._table - .
MEND
; Table offset :
Config_Special_SetCode * 0
Config_Special_ShowCode * 4
Config_Special_String * 8
; Type NoParm : *con. name
; put $value into bits $bitoff to $bitoff+$fwidth in byte $byteoff
MACRO
Config_NoParm $name, $bitoff, $fwidth, $bytoff, $value
= ConType_NoParm, "$name", 0
ALIGN
= $bitoff, $fwidth, $bytoff, $value
MEND
; Type Field : *con. name number
; read value & put into bits $bitoff to $bitoff+$fwidth in byte $byteoff
MACRO
Config_Field $name, $bitoff, $fwidth, $bytoff
= ConType_Field, "$name", 0
ALIGN
= $bitoff, $fwidth, $bytoff, 0
MEND
; Type Size : *con. name number|nK
; read value & put into bits $bitoff to $bitoff+$fwidth in byte $byteoff
MACRO
$l Config_Size $name, $bitoff, $fwidth, $bytoff
= ConType_Size, "$name", 0
ALIGN
$l = $bitoff, $fwidth, $bytoff, 0
MEND
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
; now the table
Config_Table
Config_Special Baud
AlternateBoot
Config_NoParm Boot, 4, 0, DBTBCMOS, 1
AlternateNoBoot
Config_NoParm NoBoot, 4, 0, DBTBCMOS, 0
Config_Special Cache
AlternateCaps
Config_NoParm Caps, 3, 2, StartCMOS, 4
AlternateNoCaps
Config_NoParm NoCaps, 3, 2, StartCMOS, 2
ExpandShCaps
Config_NoParm ShCaps, 3, 2, StartCMOS, 1
EndListCapsFrig
AlternateNum
Config_NoParm Num, 7, 0, StartCMOS, 0
AlternateNoNum
Config_NoParm NoNum, 7, 0, StartCMOS, 1
Config_Field Data, 5, 2, DBTBCMOS
Config_Field Delay, 0, 7, KeyDelCMOS
Config_Field DumpFormat, 0, 4, PrintSoundCMOS
Config_Size FontSize, 0, 7, FontCMOS
FontSizeFrig
Config_Special Ignore
Config_Field Language, 0, 7, LanguageCMOS
AlternateLoud
Config_NoParm Loud, 1, 0, DBTBCMOS, 1
Config_Special Mode
Config_Special MonitorType
Config_Special MouseStep
Config_Special MouseType
Config_Field Print, 5, 2, PSITCMOS
Config_Size PrinterBufferSize, 0, 7, PrinterBufferCMOS
PrinterBufferFrig
AlternateQuiet
Config_NoParm Quiet, 1, 0, DBTBCMOS, 0
Config_Size RamFSSize, 0, 6, RAMDiscCMOS
Config_Field Repeat, 0, 7, KeyRepCMOS
Config_Size RMASize, 0, 6, RMASizeCMOS
Config_Size ScreenSize, 0, 6, ScreenSizeCMOS
ScreenSizeFrig
AlternateScroll
Config_NoParm Scroll, 3, 0, DBTBCMOS, 0
AlternateNoScroll
Config_NoParm NoScroll, 3, 0, DBTBCMOS, 1
Config_Size SpriteSize, 0, 6, SpriteSizeCMOS
Config_Special Sync
Config_Size SystemSize, 0, 5, SysHeapCMOS
Config_Special TV
Config_Special WimpMode
= 0
ShCapsString = "ShiftCaps", 0
ALIGN
ExpandFrig * 8 ; see code that shows NoParm options.
ExpandTab
& ExpandShCaps - ExpandFrig-.
& ShCapsString - .-1
& 0
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
MACRO
Config_Special_Table $name, $text
Config_$name._table
B Config_$name._setcode
B Config_$name._showcode
= "$text", 0
ALIGN
MEND
ALIGN
Config_Special_Table Baud, "<D>"
Config_Special_Table Cache, "On|Off"
Config_Special_Table TV, "[<D> [[,] <D>]]"
Config_Special_Table Mode, "<D> | Auto"
Config_Special_Table Ignore, "[<D>]"
Config_Special_Table MouseStep, "<D>"
Config_Special_Table MouseType, "<D>"
Config_Special_Table MonitorType, "<D> | EDID | Auto"
Config_Special_Table Sync, "<D> | Auto"
Config_Special_Table WimpMode, "<D> | Auto"
;*****************************************************************************
; Lookup : R0 -> option
; Exit : R2 -> table entry, EQ for not found
; R0 stepped on
FindOption Entry "r1, r3-r5"
ADRL r2, Config_Table+1
04
MOV r1, #0 ; offset
01
LDRB r3, [r0, r1]
LDRB r4, [r2, r1]
CMP r3, #32
CMPLE r4, #32
BLE %FT02
UpperCase r3, r5
UpperCase r4, r5
CMP r3, r4
ADDEQ r1, r1, #1
BEQ %BT01
CMP r3, #"."
TOGPSR Z_bit, r3 ; invert EQ/NE
CMPNE r1, #0
ADDNE r1, r1, #1 ; skip .
BNE %FT02
03
LDRB r1, [r2], #1
CMP r1, #0
BNE %BT03
ADD r2, r2, #7 ; skip infoword
BIC r2, r2, #3
LDRB r1, [r2], #1
CMP r1, #0
BNE %BT04
EXIT ; failure exit
02
ADD r0, r0, r1 ; point at char after option
SUBS r2, r2, #1
EXIT ; return with success
;****************************************************************************
;
; Configure
; IF noparms OR parm=. THEN list options : issue service call : finish listing
; ELSE lookup parm1 : doit
; IF notfound THEN issue service
Configure_Help ROUT
Push "r0, lr"
ADR r0, %FT01
MOV r1, #Status_Keyword_Flag
B KeyHelpCommon
01
DCB "HUTMCON", 0
ALIGN
Configure_Code ROUT
Push "lr"
CMP r1, #0 ; noparms?
MOVEQ r3, #0
BEQ ListAll ; go listem.
BL FindOption
BEQ %FT01
LDRB r4, [r2], #1
03
LDRB r1, [r2], #1
CMP r1, #0
BNE %BT03
ADD r2, r2, #3
BIC r2, r2, #3
LDR r1, [r2]
CMP r4, #ConType_Size
BEQ ReadSizeParm
CMP r4, #ConType_Field
ASSERT ConType_Special > ConType_Field
; if special dispatch it
ADDGT r1, r1, r2 ; point at node
ADDGT pc, r1, #Config_Special_SetCode ; call it
; if noparm get value
MOVLT r2, r1, LSR #24
BLEQ ReadNumParm
BVS BadConParm
BaudEntry
BL ConfigCheckEOL
Pull "pc", VS
IgnoreEntry
MOV r0, r1 ; info word
BL ReadByte ; current byte into R1
MOV r3, r0, LSR #8
AND r3, r3, #&FF ; get fwidth
MOV r4, #2
MOV r4, r4, LSL r3
SUB r4, r4, #1 ; get mask/maximum value
CMP r2, r4
BHI ConParmTooBig
AND r3, r0, #&FF ; get bitoff
BIC r1, r1, r4, LSL r3 ; clear bits in correct position
ORR r2, r1, r2, LSL r3 ; OR in new bits
MOV r1, r0, LSR #16 ; get bytoff
AND r1, r1, #&FF
MOV r0, #WriteCMOS
SWI XOS_Byte ; and set it. Assume this clears V!
Pull "pc"
BadConParm
MOV r0, #1
B ConfigGenErr
BadConParmError
& ErrorNumber_Syntax
= "NotNumeric:Numeric parameter needed", 0
ALIGN
ConParmTooBig
MOV r0, #2
B ConfigGenErr
ConParmTooBigError
& ErrorNumber_Syntax
= "ConParmTooBig:Configure parameter too big", 0
ALIGN
01
LDR r12, =ZeroPage+Module_List
conoptloop
LDR r12, [r12]
CMP r12, #0
BEQ conoptservice
LDR r1, [r12, #Module_code_pointer]
LDR r2, [r1, #Module_HC_Table]
CMP r2, #0
BEQ conoptloop
MOV r4, #Status_Keyword_Flag
BL FindItem
BCC conoptloop ; next module
ADD r0, r0, r3 ; point at commtail
LDR r12, [r12, #Module_incarnation_list] ; preferred life
ADDS r12, r12, #Incarnation_Workspace ; clear V
Push "r1-r6"
StKey_SkipSpaces
LDRB r4, [r0], #1
CMP r4, #" "
BEQ StKey_SkipSpaces
SUB r0, r0, #1
MOV lr, pc
ADD pc, r1, r5 ; call im
Pull "r1-r6"
Pull "pc", VC
ConfigGenErr
CMP r0, #3
BHI ExitConfig
ADREQL r0, Config2manyparms
CMP r0, #2
ADREQ r0, ConParmTooBigError
CMP r0, #1
ADRLO r0, BadConOptError
ADREQ r0, BadConParmError
[ International
BL TranslateError
]
ExitConfig
SETV
Pull "pc"
conoptservice
MOV r1, #Service_UKConfig
BL Issue_Service
CMP r1, #0
BNE BadConOpt
CMP r0, #0
BGE ConfigGenErr
Pull "pc" ; TBS means OK: note CMP has cleared V
BadConOpt
MOV r0, #0
B ConfigGenErr
BadConOptError
& ErrorNumber_Syntax
= "BadConOpt:Configure option not recognised", 0
ALIGN
ReadNumParm Entry "r1"
10
LDRB r2, [r0], #1
CMP r2, #" "
BEQ %BT10
SUB r1, r0, #1
MOV r0, #10 ; set base
SWI XOS_ReadUnsigned
EXIT VS
MOV r0, r1
LDRB r1, [r0]
CMP r1, #" "
SETV GT
EXIT
; read a number or Auto
; returns R2 = number or -1 for Auto
; R0 -> terminator
ReadNumAuto Entry "r1,r3,r4"
10
LDRB r2, [r0], #1
CMP r2, #" "
BEQ %BT10
SUB r1, r0, #1
ADR r3, AutoString ; string to match against
MOV r4, #0 ; no other terminators for $R1
BL Module_StrCmp ; out: EQ => match, r1 -> terminator
; NE => no match, r1 preserved
; r3 corrupted in both cases
MOVEQ r2, #-1
BEQ %FT20
MOV r0, #10 ; set base
SWI XOS_ReadUnsigned
EXIT VS
20
MOV r0, r1
LDRB r1, [r0]
CMP r1, #" "
SETV GT
EXIT
AutoString
= "Auto", 0
dotstring
= ".", 0
ALIGN
ReadSizeParm ROUT
Push "r1, r8"
MOV r8, r2
02
LDRB r2, [r0], #1
CMP r2, #" "
BEQ %BT02
SUB r1, r0, #1
MOV r0, #10 ; set base
SWI XOS_ReadUnsigned
Pull "r1, r8", VS
BVS BadConParm
MOV r0, r1
LDRB r1, [r0]
CMP r1, #" "
BLE %FT01
CMP r1, #"k"
CMPNE r1, #"K"
Pull "r1, r8", NE
BNE BadConParm
ADRL r14, PrinterBufferFrig-4
TEQ r8, r14 ; if printer buffer size
TEQEQ r2, #1 ; and 1K
MOVEQ r2, #0 ; then use zero (default)
ADRL r14, FontSizeFrig-4 ; point at info word for fontsize
TEQ r8, r14 ; if fontsize
MOVEQ r8, #4*1024 ; then use 4K (lucky it's a pagesize!)
LDRNE r8, =ZeroPage ; else use pagesize units
LDRNE r8, [r8, #Page_Size]
ADRL r14, PageShifts-1
LDRB r14, [r14, r8, LSR #12]
SUB r14, r14, #10 ; *1024
MOV r8, r8, LSR #10 ; /1024
SUB r8, r8, #1
ADD r2, r2, r8
BIC r2, r2, r8 ; round up to nearest pagesize
MOV r2, r2, LSR r14 ; divide parm by pagesize
ADD r0, r0, #1 ; point past "K" for EOL checking
01
Pull "r1, r8"
B BaudEntry
;*****************************************************************************
; Status
; list all options matched : allow . and <terminator> to match all
; issue service
Status_Code ROUT
Push "lr"
CMP r1, #0 ; noparms?
MOVEQ r3, #1
BEQ ListAll ; go listemall
CMP r1, #1
BNE %FT01
BL FindOption
BEQ %FT01
MOV r3, #2
BL ListOneConfig
Pull "pc"
01
LDR r6, =ZeroPage+Module_List
statoptloop
LDR r6, [r6]
CMP r6, #0
BEQ statoptservice
LDR r1, [r6, #Module_code_pointer]
LDR r2, [r1, #Module_HC_Table]
CMP r2, #0
BEQ statoptloop
MOV r4, #Status_Keyword_Flag
BL FindItem
BCC statoptloop ; next module
MOV r0, #1
LDR r12, [r6, #Module_incarnation_list]
ADD r12, r12, #Incarnation_Workspace
Push "r0-r6"
MOV lr, pc
ADD pc, r1, r5 ; call im
STRVS r0, [sp]
Pull "r0-r6, pc"
statoptservice
MOV r1, #Service_UKStatus
BL Issue_Service
CMP r1, #0
Pull "pc", EQ
ADR r0, %FT03
[ International
BL TranslateError
|
SETV
]
Pull "pc"
03
& ErrorNumber_Syntax
= "BadStat:Bad status option", 0
ALIGN
;*****************************************************************************
; routine to list everything : on entry R3 = 0 means entered from configure
; = 1 " " " status
; lr stacked for return
ListAll ROUT
MOV r0, #117 ; Read current VDU status
SWI XOS_Byte ; Won't fail
Push "r1"
[ International
SWI XOS_WriteI+14
BL WriteS_Translated
= "Config:Configuration",0
ALIGN
SWIVC XOS_WriteI+" "
|
SWI XOS_WriteS
= 14, "Configuration ", 0 ; paged mode on.
ALIGN
]
Pull "r1, pc", VS ; Wrch can fail
CMP r3, #0
ADREQ r0, %FT06
ADRNE r0, %FT08
[ International
BL Write0_Translated
|
SWI XOS_Write0
]
SWIVC XOS_NewLine
SWIVC XOS_NewLine
Pull "r1, pc", VS
ADRL r2, Config_Table
02
ADRL r4, AlternateCaps
CMP r4, r2
CMPEQ r3, #1
BEQ FrigCapsList
LDRB r4, [r2]
CMP r4, #0
BLNE ListOneConfig
Pull "r1, pc", VS
BNE %BT02
10
ADRL r0, dotstring ; match all
Push "r3, r7"
LDR r7, =ZeroPage+Module_List
listallmloop
LDR r7, [r7]
CMP r7, #0
BEQ listallservice
LDR r1, [r7, #Module_code_pointer]
LDR r2, [r1, #Module_HC_Table]
CMP r2, #0
BEQ listallmloop
listalltryfind
MOV r4, #Status_Keyword_Flag
BL FindItem
BCC listallmloop ; next module
LDR r0, [stack] ; pick up r3
LDR r12, [r7, #Module_incarnation_list]
ADD r12, r12, #Incarnation_Workspace
Push "r0-r6"
MOV lr, pc
ADD pc, r1, r5 ; call im
Pull "r0-r6"
ADD r2, r2, #16 ; step to next field
ADRL r0, dotstring
B listalltryfind
[ International
06
= "Options:options:",0
08
= "Status:status:",0
|
06
= "options:",0
08
= "status:",0
]
ALIGN
listallservice
Pull "r3, r7"
CMP r3, #0
MOVEQ r1, #Service_UKConfig
MOVNE r1, #Service_UKStatus
MOV r0, #0 ; indicate list wanted
BL Issue_Service
CMP r3, #0
[ International
BEQ %FT20
BL GSWriteS_Translated
= "STail:|J|MUse *Configure to set the options.|J|M",0
ALIGN
B %FT30
20
BL GSWriteS_Translated
= "CTail1:|J|MWhere:|J|MD is a decimal number, a hexadecimal number preceded by &,|J|M"
= "or the base followed by underscore, followed|J|M",0
ALIGN
BL GSWriteS_Translated
= "CTail2:by digits in the given base.|J|MItems within [ ] are optional.|J|M"
= "Use *Status to display the current settings.|J|M",0
ALIGN
30
|
ADRNE r0, statuslastline
ADREQ r0, configlastline
SWI XOS_Write0
]
Pull "r1"
Pull "pc", VS ; return error if set
TST r1, #5
SWIEQ XOS_WriteI+15 ; paged mode off
Pull "pc"
[ :LNOT: International
statuslastline
= 10,13, "Use *Configure to set the options.", 10,13,0
configlastline
= 10,13, "Where:", 10,13
= "D is a decimal number, " ;, 10,13
= "a hexadecimal number preceded by &, ", 10,13
= "or the base followed by underscore, followed", 10,13
= "by digits in the given base.", 10,13
= "Items within [ ] are optional.", 10,13
= "Use *Status to display the current settings.", 10,13, 0
ALIGN
]
FrigCapsList
MOV r3, #2
BL ListOneConfig
Pull "r1, pc", VS
MOV r3, #1
ADRL r2, EndListCapsFrig
B %BT02
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
; routine to list one item :
; R3 = 0 means entered from configure
; = 1 " " " status
; = 2 " " " status <item>
; R2 points at the item, stepped to next on exit
; Preserves flags
ListOneConfig ROUT
EntryS
LDRB r4, [r2]
CMP r4, #ConType_Field
CMPNE r4, #ConType_Size
CMPNE r3, #0
BNE %FT20
ADD r0, r2, #1
SWI XOS_Write0
BVS ExitShow
SUB r1, r0, r2 ; get length
ADD r2, r0, #3 ; skip terminator
BIC r2, r2, #3 ; and align
CMP r4, #ConType_NoParm
BEQ %FT07
04
SWI XOS_WriteI+" "
BVS ExitShow
ADD r1, r1, #1
CMP r1, #12
BLS %BT04
CMP r3, #0
BNE %FT30
CMP r4, #ConType_Size
ADREQ r0, %FT42
BEQ %FT43
CMP r4, #ConType_Field
ASSERT ConType_Special > ConType_Field
ADREQ r0, %FT05
LDRGT r0, [r2]
ADDGT r0, r0, r2 ; point at node
ADDGT r0, r0, #Config_Special_String ; point at string
43
SWI XOS_Write0
07
ADD r2, r2, #4
ExitShow
SWIVC XOS_NewLine
11
EXITV
05
= "<D>", 0
42
= "<D>[K]", 0
; status bits :
ALIGN
20
ADD r0, r2, #1 ; got to do *status on a NoParm or Special
21
LDRB r1, [r0], #1
CMP r1, #0 ; step past name
BNE %BT21
ADD r0, r0, #3
BIC r0, r0, #3 ; align
LDR r1, [r0] ; get info word.
CMP r4, #ConType_Special
ADDEQ r1, r1, r0 ; point at node
ADDEQ pc, r1, #Config_Special_ShowCode
; if CRbytevalue = infowordvalue then print something
MOV r4, r0 ; hang on to it
MOV r0, r1
BL GetValue
MOV r1, r1, LSR #24 ; value.
CMP r0, r1
BNE %FT10 ; check for *Status <Item>
; first see if expansion needed
ADRL r0, ExpandTab
22
LDR r1, [r0], #8
CMP r1, #0
BEQ %FT23
ADD r1, r1, r0 ; get real address
CMP r1, r2
BNE %BT22
LDR r2, [r0, #-4]!
14
ADD r2, r2, r0 ; new string
23
ADD r2, r2, #1
; now write chars with space between lowercase then upper
MOV r1, #1 ; indicate uppercase last
24
LDRB r0, [r2], #1
CMP r0, #0
BEQ %FT25
CMP r0, #"Z" ; uppercase if LE
CMPLE r1, #0
SWILE XOS_WriteI+" "
BVS ExitShow
CMP r0, #"Z"
MOVLE r1, #1
MOVGT r1, #0
SWI XOS_WriteC
BVC %BT24
25
ADDVC r2, r4, #4
B ExitShow
30
LDR r0, [r2], #4 ; got to do *status for Field
CMP r4, #ConType_Size
MOV r4, r2
BL GetValue
BEQ %FT31
BL PrintR0
B ExitShow
31
Push "r8, r9"
ADRL r8, FontSizeFrig
CMP r4, r8
LDRNE r8, =ZeroPage
LDRNE r8, [r8, #Page_Size]
MOVEQ r8, #4*1024
ADRL r9, PageShifts-1
LDRB r9, [r9, r8, LSR #12]
SUB r9, r9, #10
MOVS r0, r0, LSL r9 ; size in K
BNE %FT35
ADRL r8, PrinterBufferFrig ; if zero and PrinterBufferSize, then 1K
TEQ r8, r2
MOVEQ r0, #1
BEQ %FT35
ADRL r8, ScreenSizeFrig ; if zero and it's ScreenSize, then call OS_ReadSysInfo to find appropriate amount
TEQ r8, r2
BNE %FT35
SWI XOS_ReadSysInfo ; proper screen size (r0=0) on entry
MOV r0, r0, LSR #10
35
Pull "r8, r9"
BL PrintR0
SWIVC XOS_WriteI+"K"
B ExitShow
10
CMP r3, #2
ADDNE r2, r4, #4
BNE %BT11
; R0 is the value set : can corrupt R3 as this is the do-one entry
MOV r3, r0
ADRL r0, AlternateTab ; look for option really set
12
LDR r1, [r0], #8 ; better find a match!
ADD r1, r1, r0 ; get real address
CMP r1, r2
BNE %BT12
LDR r2, [r0, #-4]!
ADD r2, r2, r0 ; translation table
LDR r0, [r2, r3, LSL #2]
B %BT14 ; go print it
AlternateTab
& AlternateBoot - ExpandFrig-.
& %FT91 -.
& AlternateNoBoot - ExpandFrig-.
& %FT91 -.
& AlternateCaps - ExpandFrig-.
& %FT92 -.
& AlternateNoCaps - ExpandFrig-.
& %FT92 -.
& ExpandShCaps - ExpandFrig-.
& %FT92 -.
& AlternateNum - ExpandFrig-.
& %FT93 -.
& AlternateNoNum - ExpandFrig-.
& %FT93 -.
& AlternateLoud - ExpandFrig-.
& %FT95 -.
& AlternateQuiet - ExpandFrig-.
& %FT95 -.
& AlternateScroll - ExpandFrig-.
& %FT96 -.
& AlternateNoScroll - ExpandFrig-.
& %FT96 -.
91
& AlternateNoBoot -%BT91
& AlternateBoot -%BT91
92
& ShCapsString -%BT92-1
& ShCapsString -%BT92-1
& AlternateNoCaps -%BT92
& AlternateNoCaps -%BT92
& AlternateCaps -%BT92
& AlternateCaps -%BT92
& AlternateCaps -%BT92
& AlternateCaps -%BT92
93
& AlternateNum -%BT93
& AlternateNoNum -%BT93
95
& AlternateQuiet -%BT95
& AlternateLoud -%BT95
96
& AlternateScroll -%BT96
& AlternateNoScroll -%BT96
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
; read byte from CMOS RAM : info word in R0, byte -> R1
ReadByte Entry "r0, r2"
MOV r1, r0, LSR #16 ; get bytoff
AND r1, r1, #&FF
MOV r0, #ReadCMOS
SWI XOS_Byte
MOV r1, r2
EXIT
; take infoword in R0, return value in R0
GetValue EntryS "r1"
BL ReadByte ; now extract the value
AND r14, r0, #&FF ; get bitoff
MOV r1, r1, LSR r14 ; throw away low bits
MOV r0, r0, LSR #8
AND r0, r0, #&FF ; get fwidth
RSB r0, r0, #31 ; number of positions to shift up to remove unwanted bits
MOV r1, r1, LSL r0 ; shift up...
MOV r0, r1, LSR r0 ; ...then down again
EXITS
PrintR0 Entry "r1, r2"
CMP r0, #-1
BNE %FT10
ADRL r0, AutoString
SWI XOS_Write0
EXIT
10
SUB sp, sp, #32
MOV r1, sp
MOV r2, #32
SWI XOS_ConvertInteger4
SWIVC XOS_Write0
ADD sp, sp, #32
EXIT
NoString = "No ", 0
ALIGN
ConfigCheckEOL ROUT
LDRB r3, [r0], #1
CMP r3, #" "
BEQ ConfigCheckEOL
CMP r3, #13
CMPNE r3, #10
CMPNE r3, #0
MOVEQ pc, lr
ADR R0, Config2manyparms
[ International
Push "lr"
BL TranslateError
Pull "lr"
|
SETV
]
MOV pc, lr
Config2manyparms
& ErrorNumber_Syntax
= "Config2manyparms:Too many parameters"
;*************************************************************************
IgnoreBitoff * 1
Config_TV_setcode ROUT
LDRB r2, [r0], #1
CMP r2, #" "
BEQ Config_TV_setcode
SUB r1, r0, #1
MOV r0, #10 ; set base
SWI XOS_ReadUnsigned
BVS %FT01
CMP r2, #3
SUBGT r0, r2, #252
CMPGT r0, #3
BHI BadConOpt
CMP r2, #3
ANDGT r2, r2, #7 ; top bit set in field means 252-255
Push "r2"
MOV r0, #0
03
LDRB r2, [r1], #1
CMP r2, #" "
BEQ %BT03
CMP r2, #","
CMPEQ r0, #0
MOVEQ r0, #","
BEQ %BT03
SUB r1, r1, #1
Push "r0"
MOV r0, #10
SWI XOS_ReadUnsigned
Pull "r0"
BVC %FT04
CMP r0, #0
Pull "r0", NE
BNE BadConOpt
04
CMP r2, #1
Pull "r0"
BHI ConParmTooBig
ORR r2, r2, r0, LSL #1
01
MOV r0, r1
LDR r1, %FT02
B BaudEntry
02
= 4, 3, MODETVCMOS, 0
Config_TV_showcode
MOV r4, r0
SWI XOS_WriteS
= "TV ", 0
ALIGN
MOVVC r0, #ReadCMOS
MOVVC r1, #MODETVCMOS
SWIVC XOS_Byte
MOVVC r2, r2, LSL #24
MOVVC r0, r2, ASR #29 ; get signed TV shift
ANDVC r0, r0, #&FF
BLVC PrintR0
SWIVC XOS_WriteI+","
MOVVC r0, r2, LSR #28
ANDVC r0, r0, #1 ; interlace bit
BLVC PrintR0
ADD r2, r4, #4
B ExitShow
Config_Ignore_setcode ROUT
LDRB r2, [r0], #1
CMP r2, #" "
BEQ Config_Ignore_setcode
SUB r1, r0, #1
MOV r0, #10 ; set base
SWI XOS_ReadUnsigned
MOV r0, r1
Push "r2"
ADR lr, %FT03
Push lr ; return reg for BaudEntry
MOVVS r2, #1
MOVVC r2, #0 ; if number had clear noignore
LDR r1, %FT01
B BaudEntry ; pseudo-BL
03
Pull "r2" ; set to 0 if noignore, but we don't care!
LDR r1, %FT02
B IgnoreEntry
01
= IgnoreBitoff, 0, PSITCMOS, 0
02
= 0, 7, PigCMOS, 0
Config_Ignore_showcode
MOV r4, r0
MOV r0, #ReadCMOS
MOV r1, #PSITCMOS
SWI XOS_Byte
TST r2, # 1 :SHL: IgnoreBitoff
ADRNE r0, NoString
SWINE XOS_Write0
BVS ExitShow
SWI XOS_WriteS
= "Ignore", 0
ALIGN
BVS ExitShow
ADDNE r2, r4, #4
BNE ExitShow
MOV r1, #PigCMOS
SWI XOS_Byte
SWI XOS_WriteS
= " ", 0
ALIGN
MOV r1, #PigCMOS
SWIVC XOS_Byte
MOVVC r0, r2
BLVC PrintR0
ADD r2, r4, #4
B ExitShow
Config_Mode_setcode ROUT
Config_WimpMode_setcode ROUT
ADR r1, ModeCMOSTable
ConfigMultiField ROUT
BL ReadNumAuto
BVS BadConParm
CMP r2, #-1
LDR r14, [r1], #4 ; get auto number
MOVEQ r2, r14 ; if auto number then replace by auto value
LDR r14, [r1], #4 ; get maximum value
CMPNE r2, r14 ; if not auto then check maximum value
BHI ConParmTooBig
BL ConfigCheckEOL
BVS ExitConfig
MOV r0, r1
BL WriteMultiField
Pull "pc" ; was already stacked by *Configure
ModeCMOSTable
& 256 ; Auto value
& 255 ; maximum valid number
; address, mask from bit 0, shift to 1st bit in value, shift to 1st bit in CMOS
[ {TRUE} ; mode = wimpmode
= WimpModeCMOS, &FF, 0, 0 ; normal bits here
= Mode2CMOS, &01, 8, 4 ; mode auto bit
ASSERT WimpModeAutoBit = 16
|
= MODETVCMOS, &0F, 0, 0 ; bits 0 to 3 here
= VduCMOS, &01, 4, 1 ; bit 4 here
= Mode2CMOS, &0F, 5, 0 ; bits 5 to 7, and auto bit here
]
= 0
ALIGN
; Write a number of CMOS RAM bit fields from a value
; in: r0 -> table
; r2 -> value to split
;
; out: -
WriteMultiField Entry "r0-r5"
MOV r3, r0 ; pointer to where we're at in table
MOV r4, r2 ; value
10
LDRB r1, [r3], #1
TEQ r1, #0
EXIT EQ
MOV r0, #ReadCMOS
SWI XOS_Byte
LDRB r0, [r3], #1 ; r0 = mask
LDRB r5, [r3], #1 ; r5 = shift to 1st bit in value
LDRB r14, [r3], #1 ; r14 = shift to 1st bit in CMOS
BIC r2, r2, r0, LSL r14 ; knock out previous bits
AND r5, r0, r4, LSR r5 ; get new bits, at bottom of byte
ORR r2, r2, r5, LSL r14 ; form new CMOS value
MOV r0, #WriteCMOS
SWI XOS_Byte
B %BT10
; Read a value formed by merging a number of CMOS RAM bit fields
; in: r0 -> table
; out: r0 = value
ReadMultiField Entry "r1-r6"
LDR r6, [r0, #4] ; get maximum value allowed
ADD r3, r0, #2*4 ; pointer to where we're at in table (skip auto, max)
MOV r4, #0 ; cumulative value
10
LDRB r1, [r3], #1
TEQ r1, #0
BEQ %FT20
MOV r0, #ReadCMOS
SWI XOS_Byte
LDRB r0, [r3], #1 ; r0 = mask
LDRB r5, [r3], #1 ; r5 = shift to 1st bit in value
LDRB r14, [r3], #1 ; r14 = shift to 1st bit in CMOS
AND r2, r0, r2, LSR r14 ; get relevant bits in bottom of byte
ORR r4, r4, r2, LSL r5 ; merge new bits with value
B %BT10
20
CMP r4, r6 ; if within range
MOVLS r0, r4 ; then return that value
MOVHI r0, #-1 ; else return -1 indicating Auto
EXIT
Config_Mode_showcode ROUT
MOV r4, r0
ADR r0, ModeSpacedString
ModeWimpModeShowCode
SWI XOS_Write0
BVS %FT10
BL Read_Configd_Mode
BL PrintR0
10
ADD r2, r4, #4
B ExitShow
ModeSpacedString
= "Mode ", 0
WimpModeSpacedString
= "WimpMode ", 0
ALIGN
Config_WimpMode_showcode ROUT
MOV r4, r0
ADR r0, WimpModeSpacedString
B ModeWimpModeShowCode
Read_Configd_Mode Entry
ADR r0, ModeCMOSTable
BL ReadMultiField
EXIT
Config_Baud_setcode ROUT
BL ReadNumParm
BVS BadConParm
CMP r2, #8
BGT ConParmTooBig
SUBS r2, r2, #1
MOVMI r2, #6
LDR r1, %FT01 ; set up info word
B BaudEntry
01
= 2, 2, PSITCMOS, 0
Config_Baud_showcode
MOV r4, r0
SWI XOS_WriteS
= "Baud ", 0
ALIGN
LDRVC r0, %BT01 ; get infoword
BLVC GetValue
ADDVC r0, r0, #1
BLVC PrintR0
ADD r2, r4, #4
B ExitShow
Config_Cache_setcode ROUT
LDRB r2, [r0], #1
CMP r2, #" "
BEQ Config_Cache_setcode
SUB r0, r0, #1
BL Cache_Opt_Parse
MOVS r1, r1
BMI BadConOpt
MOVNE r4, #&20 ; CMOS flag for 'Off'
MOVEQ r4, #0 ; CMOS flag for 'On'
MOVVC r0, #ReadCMOS
MOVVC r1, #SystemSpeedCMOS
SWIVC XOS_Byte
BICVC r2, r2, #&20
ORRVC r2, r2, r4
MOVVC r0, #WriteCMOS
SWIVC XOS_Byte
Pull "pc"
Config_Cache_showcode
MOV r4, r0
SWI XOS_WriteS
= "Cache ", 0
ALIGN
MOVVC r0, #ReadCMOS
MOVVC r1, #SystemSpeedCMOS
SWIVC XOS_Byte
BVS %FT11
TST r2, #&20 ; clear = enable
ADREQ r0, %FT12
ADRNE r0, %FT13
SWI XOS_Write0
11 ADD r2, r4, #4
B ExitShow
12
= "On", 0
13
= "Off", 0
ALIGN
Config_MouseStep_setcode ROUT
LDRB r2, [r0], #1
CMP r2, #" "
BEQ Config_MouseStep_setcode
CMP r2, #"-"
Push "r2"
SUBNE r1, r0, #1
MOV r0, #10 ; set base
SWI XOS_ReadUnsigned
Pull "r0"
BVS BadConParm
CMP r0, #"-"
RSBEQ r2, r2, #0
CMP r2, #0
BEQ BadConOpt
CMP r2, #-128
BLT BadConOpt
CMP r2, #127
BGT ConParmTooBig
MOV r0, r1
LDR r1, %FT02
B BaudEntry
02
= 0, 7, MouseStepCMOS, 0
Config_MouseStep_showcode ROUT
MOV r4, r0
SWI XOS_WriteS
= "MouseStep ", 0
ALIGN
MOVVC r0, #ReadCMOS
MOVVC r1, #MouseStepCMOS
SWIVC XOS_Byte
BVS %FT01
MOVS r2, r2, LSL #24
MOVNE r0, r2, ASR #24 ; get sign extended byte
MOVEQ r0, #1
BL PrintR0
01 ADD r2, r4, #4
B ExitShow
Config_MouseType_setcode ROUT
LDRB r2, [r0], #1
CMP r2, #" "
BEQ Config_MouseType_setcode
SUB r1, r0, #1
MOV r0, #10 ; set base
SWI XOS_ReadUnsigned
BVS BadConParm
CMP r2, #&100
BCS ConParmTooBig
MOV r4, r1
MOV r0, #1
MOV r1, r2
SWI XOS_Pointer
MOV r0, r4
LDR r1, %FT01
B BaudEntry
01
= 0, 7, MouseCMOS, 0
Config_MouseType_showcode
MOV r4, r0
SWI XOS_WriteS
= "MouseType ", 0
ALIGN
LDRVC r0, %BT01
BLVC GetValue
BLVC PrintR0
ADD r2, r4, #4
B ExitShow
Config_MonitorType_setcode
10
LDRB r2, [r0], #1
CMP r2, #" "
BEQ %BT10
SUB r1, r0, #1
ADR r3, MonitorTypeNameEDID ; string to match against
MOV r4, #0 ; no other terminators for $R1
BL Module_StrCmp ; out: EQ => match, r1 -> terminator
; NE => no match, r1 preserved
; r3 corrupted in both cases
LDREQB r3, [r1]
MOVNE r0, r1
ADR r1, MonitorTypeCMOSTable
BNE %FT20
CMP r3, #" "
BGT BadConParm
MOV r2, #MonitorTypeEDID :SHR: MonitorTypeShift
MOV r4, r2
B %FT30
20
BL ReadNumAuto
BVS BadConParm
MOV r4, r2 ; save value to store in current monitortype
CMP r2, #-1
LDR r14, [r1], #4 ; get auto number
MOVEQ r2, r14 ; if auto number then replace by auto value
LDR r14, [r1], #4 ; get maximum value
CMPNE r2, r14 ; if not auto then check maximum value
BHI ConParmTooBig
BL ConfigCheckEOL
BVS ExitConfig
30
LDR r0, =ZeroPage+VduDriverWorkSpace+CurrentMonitorType
STR r4, [r0] ; update current value
MOV r0, r1
BL WriteMultiField
; Let the display manager know that the available modes have changed
MOV r1, #Service_ModeFileChanged
BL Issue_Service
Pull "pc" ; was already stacked by *Configure
LTORG
MonitorTypeCMOSTable
DCD MonitorTypeAuto :SHR: MonitorTypeShift ; value for Auto
DCD MonitorTypeEDID :SHR: MonitorTypeShift ; maximum valid number
; address, mask from bit 0, shift to 1st bit in value, shift to 1st bit in CMOS
= VduCMOS, MonitorTypeBits :SHR: MonitorTypeShift, 0, MonitorTypeShift
= 0
MonitorTypeNameEDID
DCB "EDID", 0
ALIGN
Config_MonitorType_showcode ROUT
MOV r4, r0
SWI XOS_WriteS
= "MonitorType ", 0
ALIGN
BVS %FT20
BL Read_Configd_MonitorType
TEQ r0, #MonitorTypeEDID :SHR: MonitorTypeShift
BNE %FT10
ADR r0, MonitorTypeNameEDID
SWI XOS_Write0
B %FT20
10
BL PrintR0
20
ADD r2, r4, #4
B ExitShow
Read_Configd_MonitorType Entry
ADR r0, MonitorTypeCMOSTable
BL ReadMultiField
EXIT
Config_Sync_setcode
ADR r1, SyncCMOSTable
B ConfigMultiField
SyncCMOSTable
& 3 ; Auto value
& 1 ; maximum valid number
; address, mask from bit 0, shift to 1st bit in value, shift to 1st bit in CMOS
= VduCMOS, 1, 0, 0
= VduCMOS, 1, 1, 7
= 0
ALIGN
Config_Sync_showcode ROUT
MOV r4, r0
SWI XOS_WriteS
= "Sync ", 0
ALIGN
BVS %FT10
BL Read_Configd_Sync
BL PrintR0
10
ADD r2, r4, #4
B ExitShow
Read_Configd_Sync Entry
ADR r0, SyncCMOSTable
BL ReadMultiField
EXIT
END