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FISH_NXP_M0_SLIB.s
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// Created FISH_NXP_M0_SLIB.s
// - To place :NONAME's before dynamic content to make their CFA addresses static.
//------------------------------------------------------------------------------
// SECTION HEADER TO ALIGN ALL HI LEVEL CODE - ASM SECTION AT END DIFFERS!
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
//------------------------------------------------------------------------------
//:NONAME BELL: ( -- ) Emit BELL char.
BELL:
DC32 DOCOL, LIT, 0x07, EMIT, SEMIS
//:NONAME EIGHT: ( -- n )
//= :NONAME BACKSPACE_CHAR: ( -- n )
EIGHT:
BACKSPACE_CHAR:
DC32 DOCON, 8
//:NONAME BSOUT: ( -- ) Emit BACKSPACE char erasing it and maintain OUT.
BSOUT:
DC32 DOCOL
DC32 BACKSPACE_CHAR, EMIT
DC32 SPACE
DC32 BACKSPACE_CHAR, EMIT
DC32 LIT, -3, OUT_SV, PSTORE // Keep OUT in synch
DC32 SEMIS
//------------------------------------------------------------------------------
#ifndef SRM
//:NONAME DOTSBASE: ( n -- ) Pass n as base to .S
DOTSBASE:
DC32 DOCOL
DC32 BASE_TO_R12 // Save current BASE
DC32 BASE_SV, STORE, DOTS
DC32 BASE_FROM_R12 // Restore BASE
DC32 SEMIS
//:NONAME PRINT_SUFFIX ( -- ) Print char representing BASE ( b d or h )
PRINT_SUFFIX:
DC32 DOCOL
DC32 BASE_SV, AT, DUP
DC32 TWO, EQUAL
DC32 ZBRAN
DC32 DEC_OR_HEX-.
IS_BIN:
DC32 LIT, 'b', EMIT, DROP
DC32 SEMIS
DEC_OR_HEX:
DC32 LIT, 10, EQUAL
DC32 ZBRAN
DC32 IS_HEX-.
IS_DECIMAL:
DC32 LIT, 'd', EMIT
DC32 SEMIS
IS_HEX:
DC32 LIT, 'h', EMIT
DC32 SEMIS
//#ifndef SRM
//:NONAME DOT_BASE_SUFFIX: ( n -- ) DOT with BASE suffix appended.
// USED in . .D and .SD
SECTION .text : CONST (2)
DOT_BASE_SUFFIX:
DC32 DOCOL
DC32 STOD // Extend sign
DC32 ZERO // and no padding
DC32 DDOTR // in call to D.R
DC32 PRINT_SUFFIX // Read BASE and print suffix
DC32 SEMIS
//:NONAME UDOT_BASE_SUFFIX: ( n -- ) UDOT with BASE suffix appended.
// USED in .B .H .SB AND .SH
UDOT_BASE_SUFFIX:
DC32 DOCOL
DC32 ZERO, ZERO // No sign and no padding
DC32 DDOTR // in call to D.R
DC32 PRINT_SUFFIX // Read BASE and print suffix
DC32 SEMIS
//:NONAME DOTBASE: ( n n -- ) Use TOP n as temporary BASE to output with.
// Save current BASE and use n as BASE for this DOT or U.
// Used by .B .D and .H
DOTBASE:
DC32 DOCOL
DC32 BASE_TO_R12 // Save current BASE
DC32 DUP, BASE_SV, STORE // Save and set BASE to use
// IF THIS IS ELIMINATED AND UDOT ONLY USED -1 .D IS 42432762367
DC32 LIT, 10, EQUAL // Use saved BASE for DECIMAL case
DC32 ZBRAN // Fall thru for DECIMAL Case
DC32 DBUSEDUDOT-. // Else handle BIN and HEX as unsigned.
DC32 DOT_BASE_SUFFIX
DC32 BRAN
DC32 DBASEDONE-. // Finish with space and reestoration of BASE.
DBUSEDUDOT:
DC32 UDOT_BASE_SUFFIX
DBASEDONE:
DC32 SPACE // Provide normal . formatting
DC32 BASE_FROM_R12 // Restore BASE
DC32 SEMIS
#endif // not SRM
//------------------------------------------------------------------------------
//:NONAME INITSO_SV: ( -- addr of INITSO )
// A system variable that contains the initial value for the stack pointer.
// Pronounced S-zero. See SP!
INITSO_SV:
DC32 DOCON, INITSO
//:NONAME INITRO_SV: ( -- addr of INITRO )
// A system variable containing the initial location of the return stack.
// Pronounced R-zero. See RP!
INITRO_SV:
DC32 DOCON, INITRO
//:NONAME CSP_SV: ( -- addr of CSP ) Stack address save for compile error checking
// A system variable temporarily storing the stack pointer position, for
// compilation error checking.
CSP_SV:
DC32 DOCON, CSP
//:NONAME HLD_SV: ( -- addr of NHLD ) Holds address of numeric output conversion
// A system variable that holds the address of the latest character of
// text during numeric output conversion. Usually pad relative.
HLD_SV:
DC32 DOCON, NHLD
//:NONAME DICTFULL_ABORT ( -- ) Issue Dictionary Full Message and ABORT
DICTFULL_ABORT:
DC32 DOCOL
DC32 LIT, msg_dictfull
DC32 NULLSTRLEN, TYPE
DC32 ABORT
//:NONAME ALLOT_PRIM: ( un -- ) ALLOT WITHOUT DICTIONARY CHECK
ALLOT_PRIM:
DC32 DOCOL
DC32 DP_SV
DC32 PSTORE
DC32 SEMIS
//:NONAME COMMA_PRIM ( CFA -- ) COMMA WITHOUT DICTSPACE TEST
COMMA_PRIM:
DC32 DOCOL
DC32 ALIGN32_FF_PAD // ASM CANDIDATE
DC32 HERE // is NEW DP
DC32 STORE // CFA
DC32 FOUR
DC32 ALLOT_PRIM // ALLOT W/O DICTSPACE CHECK
DC32 SEMIS
//:NONAME QCOMP: ( -- ) Issue error message if not compiling.
QCOMP:
DC32 DOCOL
DC32 STATE_SV
DC32 AT
DC32 ZEQU
DC32 LIT, msg_qcomp
DC32 QERROR // ( f nullstr-addr -- )
DC32 SEMIS
//:NONAME QEXEC: ( -- ) Issue error message if not executing.
QEXEC:
DC32 DOCOL
DC32 STATE_SV
DC32 AT
DC32 LIT, msg_qexec
DC32 QERROR // ( f nullstr-addr -- )
DC32 SEMIS
//:NONAME QPAIR: ( n1 n2 -- ) Issue an error message if n1 does not equal n2.
// The message indicates that compiled conditionals do not match.
QPAIR:
DC32 DOCOL
DC32 SUBB
DC32 LIT, msg_qpair
DC32 QERROR // ( f nullstr-addr -- )
DC32 SEMIS
//:NONAME QSTACK: ( -- ) If Stack Error type error message then Abort.
// Issue an error message if the stack is out of bounds. This
// definition may be installation dependent.
QSTACK:
DC32 DOCOL
DC32 SPAT
DC32 INITSO_SV
DC32 AT
DC32 SWAP
DC32 ULESSTHAN // U< ( 2 1 -- 0 ) ( 1 2 -- 1 )
DC32 LIT, msg_qstack
DC32 QERROR // ( f nullstr-addr -- )
DC32 SEMIS
//:NONAME PDOTQ: ( -- ) DOTQ run-time
// The run-time proceedure, compiled by ." which transmits the
// following in-line text to the selected output device. See ."
// USE SINGLE QUOTES in SOURCE USAGE!!!!
PDOTQ:
DC32 DOCOL
DC32 RFROM // Addr of string = aofstr
DC32 DUP, COUNT, TYPE
DC32 COUNT, PLUS
DC32 ALIGNED
DC32 TOR
DC32 SEMIS
//:NONAME QUERY: ( -- ) Use Expect to fill TIB
// Input characters into TIB as a NULL terminated string using EXPECT.
// TIB is filled until CR/EMTER or count argument to EXPECT is reached.
// IN is set to zero and the string in TIB is NULL terminated.
QUERY:
DC32 DOCOL
DC32 TIB_SV // LIT, TIB-1 //TIB_SV
DC32 LIT, IOBUFSIZE-2 // 96-2=94
DC32 EXPECT // expect = counted null terminated string now.
DC32 STRVA, 1, IN // so skip count byte
#ifdef IOBUFS_DEBUG
DC32 TIB_SV, ONE, DUMP
#endif
DC32 SEMIS
//:NONAME PNUMBER: ( 0 0 addr1 -- d addr2 )
// ( 0 0 addr1 -- LSW MSW addr2=addr1+chars )
// Convert the ascii text beginning at addr1+l
// with regard to BASE into a 64 bIt unsigned number d.
// Addr2 is the address of the first unconvertable digit, usually space
// or NULL.
// Used by NUMBER.
PNUMBER:
DC32 DOCOL
PNUM1: // Begin
DC32 ONEP // ( LSW MSW addr+1 -- )
DC32 DUP, TOR // ( LSW MSW addr+1 -- ) copy of addr+1 >r
DC32 CAT // ( LSW MSW c -- )
DC32 BASE_SV, AT // ( LSW MSW c base -- )
DC32 DIGIT // ( LSW MSW c base -- 0 0 digit 1 (ok)
// | ( 0 0 0 (bad))
// digit gets 0, 0x20 or 0x2E and returns 0 then branches to fromr semis...
DC32 ZBRAN //
DC32 PNUM2-. // If digit retuned 0 branch, else fall thru
DC32 SWAP // ( LSW MSW digit -- )
DC32 BASE_SV, AT // ( LSW digit MSW base -- )
// U* (un un -- ud=<LSW MSW> )
DC32 USTAR // ( LSW digit LSW MSW -- )
DC32 DROP
DC32 ROT
DC32 BASE_SV, AT // ( base*accn bn base -- )
DC32 USTAR // ( base*accn bn*base -- )
DC32 DPLUS // ( base*accn+bn*base -- )
DC32 DPL_SV, AT, ONEP
DC32 ZBRAN // IF true
DC32 PNUM3-. // else do
DC32 ONE, DPL_SV, PSTORE
PNUM3: // endif
// ( 0 0 <c | 0> -- )
DC32 RFROM // ( 0 0 <c | 0> addr+1 -- ) copy of addr+1 <r
DC32 BRAN
DC32 PNUM1-. // REPEAT
PNUM2:
DC32 RFROM // copy of addr+1 <r
DC32 SEMIS
//:NONAME DFIND: ( --- pfa len tf )(found)
// ( --- ff ) (not found)
// Accepts the next text word (delimited by blanks) in the input stream
// to HERE, and searches the CONTEXT and then CURRENT vocabularies
// for a matching entry. If found, the dictionary entry's parameter
// field address, its length byte, and a boolean true is left.
// Otherwise, only a boolean false is left.
// DFIND LEN HAS TO BE smudged header byte for INTERPRET.
DFIND:
DC32 DOCOL
#ifdef IO2TP
TIB_INPUT_HERE_IN_DFIND:
DC32 NOOP // R5 = @30A0h ENTER INTO TIB HERE
#endif
DC32 BLANK // ( ch -- )
DC32 WORD // ( cH-DELIM --- )
DC32 HERE // ( txt -- )
#ifdef IOBUFS_DEBUG
DC32 DUP, ONE, DUMP
#endif
DC32 LATEST // ( txt nfa -- )
DC32 PFIND // ( txt nfa -- pfa wordlen 1 ) (ok)
// | ( txt nfa -- 0 ) (bad)
DC32 SEMIS
//:NONAME COMP: ( -- ) Compile CFA of word that follows inside a definition.
// DOTQ: DO: LOOP: PLOOP: LITERAL: DLITERALl COLON: SEMIS:
// DO DICTSPACE CHECK, AS DOES COMMA, CCOMMA and ALLOT
// SO COMMA_PRIM CREATED AND USED HERE FOR COMPILER SPEEDUP
// Compile CFA of word that follows.
// When the word containing COMPILE executes, the execution address of
// the word following COMPILE is copied (compiled) into the dictionary.
// This allows specific compilation situations to be handled in
// addition to simply compiling an execution address (which the
// interpreter already does).
COMP:
DC32 DOCOL
// DC32 QEXEC // QCOMP
DC32 RFROM // addr of next word in body of this word
DC32 DUP
DC32 FOURP // addr past next word...
DC32 TOR // that where execution resumes after
DC32 AT // compiling this word
// DC32 COMMA // ALIGNED, INCREMENTS DP REFLECTED by HERE
DC32 COMMA_PRIM // NO DICTSPACE CHECK HERE
DC32 SEMIS
//:NONAME MSMOD: ( ud1 n2 -- n3 ud4 )
// An unsigned mixed magnitude math operation which leaves a double
// quotient ud4 and remainder u3, from a double dividend ud1 and single
// divisor u2. Primarily used in pictured numeric output DIG
MSMOD:
DC32 DOCOL // EX 1 0 A
DC32 TOR // -- 1 0
DC32 ZERO // -- 1 0 0
DC32 R // -- 1 0 0 A
DC32 USLASH // ( uLSW uMSW u32 --- u32REMAINDER u32QUOTIENT )
DC32 RFROM
DC32 SWAP // -- 0 A 0 1 0
DC32 TOR
DC32 USLASH
DC32 RFROM
DC32 SEMIS
//:NONAME SCSP: ( -- ) Save the parameter stack position in CSP.
// Part of the compiler security.
// Means Store (save) Compile time stack position.
SCSP:
DC32 DOCOL
DC32 SPAT
DC32 CSP_SV
DC32 STORE
DC32 SEMIS
//:NONAME QCSP: ( -- ) Issue error message if stack and CSP don't match.
// Indicates unbalanced compilation. Part of compiler security
QCSP:
DC32 DOCOL
DC32 SPAT
DC32 CSP_SV
DC32 AT
DC32 SUBB
DC32 LIT, msg_qstack
DC32 QERROR // ( f nullstr-addr -- )
DC32 SEMIS
//:NONAME INTERPRET: ( -- ) The space delimited text Token Interpreter
// Find or convert a text token then execute it's semantics or compile it,
// depending on STATE. The token text is from the TIB.
// If the token cannot be found in a dictionary (by a search of CURRENT),
// an attempt to converte it to a number according to the current base.
// is tried. That also failing, an error message will TYPE and ABORT.
// Text input will be taken according to the convention for WORD. If a
// decimal point is found as part of a number, a double number value
// will be left. The decimal point is saved in DPL but otherwise
// has no other purpose than to force this action.
// See NUMBER.
INTERPRET:
DC32 DOCOL
INTE1: // Begin
DC32 DFIND // IO2TP noop there for TIB entry
// -FIND ( --- pfa len tf )(found) ( --- ff ) (not found)
DC32 ZBRAN // IF not a word,
DC32 INTE2-. // TRY AS A NUMBER
DC32 STATE_SV // CSTATE 0 = INTERPRET, Cxh = COMPILING
DC32 AT // DFIND len has to be SMUDGED NFA count
DC32 LESSTHAN // for CSTATE to pass IMMEDIATE words
DC32 ZBRAN // To execute immdeiate words while compiling
DC32 INTE3-.
DC32 CFA
DC32 COMMA_PRIM // No DICTSPACE check, aligned.
DC32 BRAN //ELSE
DC32 INTE4-.
INTE3:
DC32 CFA //EXECUTE FOUND WORD
DC32 EXEC //endif
INTE4:
DC32 QSTACK // IF STACK error abort using qerr
DC32 BRAN //ELSE
DC32 INTE1-.
INTE2:
DC32 HERE
DC32 NUMBER //( addr --- 32LSW 32MSW ) IF error quit
DC32 DPL_SV
DC32 AT
DC32 ONEP
DC32 ZBRAN // IF 1+ = 0
DC32 INTE6-. // SINGLE NUMBER
DC32 DLITERAL // PUSH DOUBLE NUMBER TO STACK
DC32 BRAN // ELSE DOUBLE NUMBER
DC32 INTE7-.
INTE6:
DC32 DROP
DC32 LITERAL // PUSH SINGLE NUMBER TO STACK
INTE7:
DC32 QSTACK // endif // IF STACK error abort using qerr
INTE5:
DC32 BRAN // AGAIN
DC32 INTE1-.
//:NONAME QUIT: ( -- ) The Outer Interpreter.
// THE OUTER INTERPRETER WAITS FOR INPUT
// THEN CONVERTS NUMBERS AND EXECUTES WORDS
// Clear the return stack, stop compilation, and return control to the
// operators terminal. No message is given.
QUIT:
DC32 DOCOL
DC32 LBRAC // Set CSTATE to zero - not compiling.
DC32 SPSTO // ADDED in PAREN TEST
QUIT1: // Begin
#ifdef IO2TP
DC32 CLRPAD // Resets OUT
#endif
DC32 RPSTO
DC32 QUERY // ( -- ) Input to TIB
DC32 INTERPRET // ( -- ) RETURN BY CR placing null in tib -> NULL:
#ifdef IO2TP
DC32 NOOP
DC32 CLRPAD // Resets OUT
#endif
// ISSUE INLY CR IF COMPILING OR IF PROMPT: SET TO 0 WITH POFF(PROMPTOFF)
DC32 STATE_SV // 0xC0 is compiling
DC32 AT
DC32 ZEQU // NOT = TO ZERO IF COMPILING SO 0 IF COMPILING
DC32 ZBRAN // BRANCH IF 0 - CSTATE IS NON-ZERO = compiling
DC32 QUIT2-. // CR, LOOP AGAIN
// v1.7 new feature to vector the system prompt
// zero means only cr with every line - for download suppression of all but errs
DC32 LIT, PROMPT, AT
DC32 ZBRAN // IF PROMPT$ = 0
DC32 QUIT2-. // CR, LOOP AGAIN
// PROMPT$ is not zero
DC32 LIT, PROMPT, AT
// DC32 LIT, msg_MY_OK
DC32 NULLSTRLEN, TYPE
//------------------------------------------------------------------------------
#ifdef SRM
// use this code so the SRM prompt can act like DOTDEC output
DC32 BASE_TO_R12 // Save current BASE
DC32 BASE_SV, AT
DC32 DECIMAL, DOT
DC32 BASE_FROM_R12 // Restore BASE
#else
DC32 BASE_SV, AT
DC32 DOTDEC
#endif
//------------------------------------------------------------------------------
BP1_QUIT:
#ifdef IO2TP
DC32 NOOP // TEMP TEST ok = in quit
DC32 CLRTIB // Resets IN
DC32 CLRPAD // Resets OUT
#endif
QUIT2:
if EOL_DLE
QUIT_EOL_DLE:
DC32 LIT, 0x10, EMIT // 16d DLE Data Link Escape
// DC32 LIT, 0xFE, EMIT // 255d BLACK SQUARE or '|o' in EOL_DLE
endif
DC32 CR // HERE FOR BOTH COMPILE AND INTERPRET
DC32 BRAN // AGAIN
DC32 QUIT1-.
//:NONAME BACK: ( addr -- ) Branch back primitive
// Calculate the backward branch offset from HERE to addr and compile
// into the next available dictionary memory address.
BACK:
DC32 DOCOL
DC32 HERE
DC32 SUBB
DC32 COMMA
DC32 SEMIS
//:NONAME SEMIC_CREATE: ( -- ) Used after CREATE to reset CSDP
// Used in ; CON and VAR to reset CSDP which is used to auto forget
// Words that have errors during compilation.
SEMIC_CREATE:
DC32 DOCOL
DC32 STRVA, 0, CSDP // RESET AUTO FORGET WHEN CREATE ERROR
DC32 SEMIS
//:NONAME CSDP_SV ( -- addr of CSDP ) Holds where to reset if definition fails
CSDP_SV:
DC32 DOCON, CSDP
//:NONAME PM: ( n1 n2 -- n3 ) Apply the sign of n2 to n1, which is left as n3.
PM:
DC32 DOCOL
DC32 ZLESS
DC32 ZBRAN //IF
DC32 PM1-.
DC32 NEGATE //endif
PM1:
DC32 SEMIS
//:NONAME DPM: ( d1 n -- d2) Apply the sign of n to the double number d1.
DPM:
DC32 DOCOL
DC32 ZLESS
DC32 ZBRAN //IF
DC32 DPM1-.
DC32 DNEGATE //endif
DPM1:
DC32 SEMIS
//:NONAME SIGNON: ( -- ) type SIGNON message.
SIGNON:
DC32 DOCOL
#ifdef IO2TP
DC32 NOOP
DC32 STRVA, 0, OUT
#endif
DC32 CR, LIT, msg_FISH
DC32 NULLSTRLEN, TYPE
#ifdef SRM
DC32 CR
#endif
#ifndef SRM
DC32 LIT, msg_FISH_TIMESTAMP
DC32 NULLSTRLEN, TYPE
#endif
#ifdef EOL_DLE
DC32 LIT, msg_SIGNON_DLE
DC32 NULLSTRLEN, TYPE
#endif
#ifndef SRM
DC32 CR
#endif
#ifdef IO2TP
DC32 NOOP
DC32 CLRPAD // Resets OUT
#endif
DC32 SEMIS
//:NONAME WARM: ( -- ) Perform FWARM and FLASH_SCAN
// SYSTEM RAMVARSPACE INIT
// Patch in FLASH_SAVE'd Code.
WARM:
DC32 DOCOL
DC32 FWARM
DC32 FLASH_SCAN
DC32 SEMIS
//:NONAME TRAVERSE TRAVERSE: ( addr1 n -- addr2 ) Used in NFA and PFA
// USED only in NFA and PFA, padding alignment is done there.
// Move across a variable length padding aligned name field with smudged 1rst and last byte.
// addr1 is the address of either the length byte or the last letter.
// If n=1, the motion is toward nfa - hi memory, if n=-l, the motion is
// toward CFA - low memory. The addr2 resulting is address
// of the other end of the name.
TRAVERSE:
DC32 DOCOL
DC32 SWAP
TRAVERSE_BEGIN:
DC32 OVER // Begin
DC32 PLUS
DC32 LIT,0x7F
DC32 OVER
DC32 CAT
DC32 LESSTHAN
DC32 ZBRAN //until
DC32 TRAVERSE_BEGIN-.
DC32 SWAP
DC32 DROP
DC32 SEMIS
//------------------------------------------------------------------------------
// ASM CODE START - MUST BE ALLIGNED AGAIN
/* AS in:
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
LABEL:
DC32 .+5
SECTION .text : CODE (2)
ASM CODE
*/
//------------------------------------------------------------------------------
//:NONAME SECTION:
//:NONAME SV_INIT_VALUES: Table of FISH SYSTEM VAR Iinitial values.
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
SV_INIT_VALUES:
// 4 words of System Variables
DC32 DEFAULT_BASE // NBASE
DC32 1 // IN
DC32 0 // OUT
DC32 0 // CSTATE
// 5 addresses of System Data Structures
DC32 PINIT // INITSO
DC32 RINIT // INITRO
DC32 TIB // INITTIB
DC32 RAMVARSPACE // UP
DC32 ORIG // DP
// 4 addresses of System Pointers
DC32 0 // CSDP
DC32 0 // FENCE
#ifdef FISH_PubRel_WORDSET
DC32 WC_FISH_PubRel_NFA // 11d CURRENT
#endif
#ifdef FISH_NXP_M0_PRO_WORDCAT
DC32 WC_FISH_PRO_NFA // 12d CURRENT
#endif
DC32 msg_MY_OK // 13d PROMPT
DC32 0 // 14d ERROR_HALT
// 14d WORDS TO COPY
//:NONAME FWARM ( -- ) FISH SYSTEM VAR Initialization primitive.
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
FWARM:
DC32 .+5
SECTION .text : CODE (2)
LDR t, = SV_INIT_VALUES
LDR n, = END_RAMVARSPACE_SV_START
LDR w, = 14d
FWBEGIN:
LDR x, [t]
STR x, [n]
ADDS t, #4
ADDS n, #4
SUBS w, #1
BNE FWBEGIN
NEXT
LTORG // Always outside of code, else data in words
//:NONAME DOCOL ( -- ) COMPILED VERSION OF COLON
SECTION .text : CODE (2)
ALIGNROM 2,0xFFFFFFFF
DOCOL: // no cfa for DOCOL!!!!! <<<<<<<<<<<<<<<<<<
PUSHi2r // save IP to Rstack
MOV i, w // jam new IP = cfa+4
NEXT
//:NONAME SEMIS: ( -- ) COMPILED VERSION OF SEMICOLON
// Terminate a colon-definition,
// : pushed the calling word return addr to the return stack
// This retrieves it and returns to calling word.
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
SEMIS:
DC32 .+5
SECTION .text : CODE (2)
POPr2i // pop docol saved IP from Rstack
NEXT
//:NONAME DOVAR ( -- ) COMPILED VERSION OF VAR
// VAR is a CON but DOVAR is 'duplicated' to allow search for it's CFA
// so FORGET can reclaim VAR space.
SECTION .text : CODE (2)
ALIGNROM 2,0xFFFFFFFF
DOVAR:
LDM w!, {t}
TPUSH
//:NONAME DOCON ( -- ) COMPILED VERSION OF CON
SECTION .text : CODE (2)
ALIGNROM 2,0xFFFFFFFF
DOCON:
LDM w!, {t}
TPUSH
//:NONAME LIT: ( -- n ) The primitive that pushes a number in a definition.
// Within a colon-definition, LIT is automatically compiled before each
// 32 bit literal number encountered in input text. Later execution of
// LIT causes the contents of the next dictionary address ( the LITERAL #)
// to be pushed to the stack.
// Use LITERAL
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
LIT:
DC32 .+5
SECTION .text : CODE (2)
LIT2t // LDM i!, {t}
// fetch memory i points to into {t}, inc i after
TPUSH
//:NONAME RLIT: ( -- n ) LIT primitive that can have it's value relocated.
// SEE LIT. ALLOWS RELOCATION OF THIS type OF LIT
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
RLIT:
DC32 .+5
SECTION .text : CODE (2)
LIT2t // LDM i!, {t}
// fetch memory i points to into {t}, inc i after
TPUSH
//:NONAME GOTO: ( cfa -- ) Redirect execution to cfa in another hi-level word.
// CAUTION!!!!!!! A SYSTEM WORD EXPOSED FOR THE BOLD AND BRAVE!!!!!!!
// Stack in CURRENT WORD MUST BE CLEANED UP!
// AND STACK MUSTE BE SET UP as expected where you GOTO.
// YOU CANNOT VIOLATE controls structure (LOOPS, BEGINs IFs, etc).
// Unless you come from the same point in the same control structure!
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
GOTO:
DC32 .+5
SECTION .text : CODE (2)
POP2i // set i as pointer to cfa to start execution
NEXT
//:NONAME CREATE_DOES_GOTO: ( -- )
// PUSH ADDRESS OF CREATED WORDS PFA THEN
// Redirect execution to cfa of the CREATE DOES> word.
// THIS IS LIKE A DOCON IE NO DOCOL!!!!
// CAUTION!!!!!!! A SYSTEM WORD EXPOSED FOR THE BOLD AND BRAVE!!!!!!!
// Stack in CURRENT WORD MUST BE CLEANED UP!
// AND STACK MUSTE BE SET UP as expected where you GOTO.
// YOU CANNOT VIOLATE controls structure (LOOPS, BEGINs IFs, etc).
// Unless you come from the same point in the same control structure!
CREATE_DOES_GOTO:
SECTION .text : CODE (2)
// WILL NEED A NEW CASE in FLASH_SAVE!
// NO DOCOL - SO FUDGE ONE
// PUSH ADDR AFTER EXEC in INTERPRET TO r:
PUSHi2r // save IP to Rstack
// AND THIS LOADS GOTO ADDR
LDR i, [t, #4] // GET GOTO ADDRESS
// THIS PUSHES PFA TO t
ADDS t, t, #8 // COMPUTE REAL PFA
PUSHt
NEXT
//:NONAME DICTSPACE: ( -- n ) Calculate and push dictionary space available
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
DICTSPACE:
DC32 .+5
SECTION .text : CODE (2)
LDR t, = DICTSPACE_END
LDR n, = DP
LDR n, [n]
SUBS t, t, n
TPUSH
// LTORG
//:NONAME VARSPACE: ( -- n ) Calculate and push VAR space available
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
VARSPACE:
DC32 .+5
SECTION .text : CODE (2)
LDR t, = END_RAMVARSPACE_SV_START
LDR n, = UP // UP IS ALLOCATION POINTER FOR VARS AND VARALLOT
LDR n, [n]
SUBS t, t, n
TPUSH
LTORG
// Rewrite for TOSCT interop?
//:NONAME PFIND: ( addr1 addr2 -- pfa b tf ) (ok)
// ( addr1 addr2 -- ff ) (bad)
// LEN HAS TO BE smudged header byte for INTERPRET.
// Header LEN BYTE REQUIRED by Interpret for immediate word execution
// Searches the dictionary starting at the name field address addr2,
// matching to the text at addr1. Returns parameter field address,
// length byte of name field and boolean true for a good match. If no
// match is found, only a boolean false is left.
//
// To step thru to a word set bp at :NONAME
// and watch r3 for match of word addr from symbol file
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
PFIND:
DC32 .+5
SECTION .text : CODE (2)
POP2x // r3 Dict Name NFA
POP2w // r2 String Addr usually at here
MOV rb, w // r11 Save TXT String ADDR
// SEARCH LOOP
// nfa length test
// x must = Dict nfa
PFIN1: // ADDR-->char counted strings
MOV w, rb // restore txt str addr
LDRB t, [x] // GET nfa LENGTH from r3
// LEN HAS TO BE smudged header byte for DFIND -> INTERPRET.
// ELSE DO THIS HERE TO MAKE IT ACTUAL & REMOVE SECTION BELOW
// MOVS y, #0x3F
// ANDS t, y
MOV k, t // r12 Save search word length
LDRB n, [w] // r1 r2 TXT WORD LEN
EORS t, t, n
MOVS y, # 03Fh
ANDS t, y
BNE PFIN5 // Len mismatch, GET NEXT LINK FIELD ADDR (lfa)
// LENGTHS MATCH - CHECK EACH CHARACTER in NAME
// TEST FIRST CHAR AND DETERMINE IF LAST
PFIN2:
ADDS w, w, #1 // str
ADDS x, x, #1 // nfa
LDRB t, [x] // GET nfa 1RST CHAR
LDRB n, [w] // GET TXT 1RST CHAR
CMP t, n // eor was working but this make 0x80 subb
BEQ PFIN2 // matched try next char
MOVS y, #0x80
SUBS t, t, y // ascii only in t and n
cmp t, n
BNE PFIN51 // goto WORD MISMATCH
// FOUND END OF NAME (BIT 8 SET) - A MATCH
// GET to pfa of found word
PFIN21:
ADDS x, x, #1 // Dict addr
LDRB t, [x]
CMP t, #0xFF
BEQ PFIN21
thispfa:
ADDS x, x, #8 // at cfa -> pfa
PUSHx // PUSH pfa
MOVS t, #1 // TRUE VALUE
MOV w, k // RETURN Header Byte LENGTH
DPUSH
// NO NAME MATCH - TRY ANOTHER
// Set NEXT LINK FIELD ADDR (lfa) to x
// ( ZERO = FIRST WORD OF DICTIONARY )
// GET TO END OF NAME BEFORE Padding IF ANY
// ENTER HERE FROM LEN!= (RB->CNT)
PFIN5:
ADDS x, x, #1 // inc char in name addr
// ENTER HERE FROM WORD MISMATCH
PFIN51:
LDRB t, [x] // get Dict Word char
MOVS y, #0x80
TST t, y // is last char in word bit set
BEQ PFIN5
// UNMATCHED NAME - POINTING AT LAST CHAR BEFORE Padding IF ANY
// GET PAST FF Padding AND GET lfa
PFIN7:
// Code for ALIGNED
// ADDS x, x, #3
ADDS x, x, #4 // add 1 for entry
LDR t, =-4
ANDS x, x, t
LDR x, [x] // r3 GET lfa to next word
CMP x, #0 // START OF DICT ( 0 ) ?
BEQ WORDNOTFOUND
// NOT A BRAN TARGET - This one used for breakpoint
PFIND_NEXT_NFA:
B PFIN1 // Search next word x must = Dict nfa
WORDNOTFOUND: // PFIND: DONE ( NO MATCH FOUND )
MOVS t, #0
TPUSH
LTORG
//:NONAME BRAN: ( -- ) Branch in definitions primitive
// In IAR branch target MUST BE ON Next LINE!!!<<<<<<<<<<<<<<<<<<<<<<<<
// The run-time proceedure to unconditionally branch. An in-line offset
// is added to the interpretive pointer IP to branch ahead or back.
// BRANCH is compiled by ELSE, AGAIN, REPEAT.
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
BRAN:
DC32 .+5
SECTION .text : CODE (2)
BRAN1:
LDR x, [i] // Get branck target
ADDS i, i, x // use as offset
NEXT
//:NONAME ZBRAN: ( f -- ) Branch if zero definition primitive.
// In IAR branch target MUST BE ON Next LINE!!!<<<<<<<<<<<<<<<<<<<<<<<<
// The run-time proceedure to conditionally branch. If f is false
// (zero), the following in-line parameter is added to the interpretive
// pointer to branch ahead or back. Compiled by IF, UNTIL, and WHILE.
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
ZBRAN:
DC32 .+5
SECTION .text : CODE (2)
POP2t
CMP t, #0 // ZERO?
#ifdef TOSCT // CMP CONSUMES t
LDR t, [p] // REFRESH t
#endif
beq BRAN1 // YES, BRANCH
ADDS i, i, #4 // NO - CONTINUE...
NEXT
//:NONAME XLOOP: ( -- ) Loop primitive in a definition.
// The run-time proceedure compiled by LOOP which increments
// the loop index by one and tests for loop completion.
// See LOOP.
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
XLOOP:
DC32 .+5
SECTION .text : CODE (2)
MOVS x, #1
XLOO1:
// Get Limit and Index from r w/o popping them
LDR y, [r, #4] // Limit
LDR w, [r] // Index
CMP y, w // If equal
BEQ XLOO2 // done
adds w, w, x // INDEX = INDEX + INCR
str w, [r] // Put it back by overwrite for I
SUBS y, y, w
BNE BRAN1 // End of `DO' LOOP
XLOO2:
// Drop Limit and Index, increment i
ADDS r, r, #8
ADDS i, i, #4
NEXT
//:NONAME XPLOOP: ( n -- ) +LOOP primitive in definitions.
// The run-time proceedure compiled by +LOOP, which increments the loop
// index by n and tests for loop completion. See +LOOP.
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
XPLOOP:
DC32 .+5
SECTION .text : CODE (2)
POP2x // GET LOOP VALUE
#ifdef TOSCT
LDR t, [p]
#endif
b XLOO1 // see XLOO1 for why it's put in x
//:NONAME XDO: ( Limit Index -- ) The DO primitive in definitions.
// ( Limit = addr+cnt Index = addr -- ) as in ( TIB+LEN TIB -- )
// The run-time proceedure compiled by DO which moves the loop control
// parameters to the return stack. See DO.
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
XDO:
DC32 .+5
SECTION .text : CODE (2)
POP2t // INITIAL INDEX VALUE = ADDR
POP2w // LIMIT VALUE = ADDR+CNT
PUSHw2r
PUSHt2r // i expects index TOP of RSTACK
#ifdef TOSCT
LDR t, [p] // REFRESH t
#endif
NEXT
//:NONAME CATLT7F ( addr -- c ) Get char at addr then AND it with 7Fh
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
CATLT7F:
DC32 .+5
SECTION .text : CODE (2)
POP2t
LDRB t, [t]
LDR n, =7Fh
ANDS t, t, n
TPUSH
//:NONAME TIB_CHAR_SCAN ( c -- f ) Scan TIB for c or until null found.
// Scan TIB, a null terminated string at TIB+IN for 'c' or null termination.
// Uses and adjusts IN to reflect offset to c or null in TIB.
// Return false flag if null found first, indicating end of input in TIB,
// ( usually from QUERY ) else return true flag, either with IN adjusted.
SECTION .text : CONST (2)
ALIGNROM 2,0xFFFFFFFF
TIB_CHAR_SCAN: