mirror of
https://github.com/hsoft/collapseos.git
synced 2024-11-23 16:58:05 +11:00
forth: make word name of variable length
This allows us to save a whole 500 bytes on the final binary size! This change comes after I took a look at the hex dump and saw that one letter constants in z80a.fs took a lot of space.
This commit is contained in:
Virgil Dupras
parent
52e6eaafc7
commit
6eaabb9bbe
@ -29,7 +29,7 @@ trouble of compiling defs to binary.
|
||||
|
||||
//#define DEBUG
|
||||
// in sync with glue.asm
|
||||
#define RAMSTART 0x900
|
||||
#define RAMSTART 0x8a0
|
||||
#define STDIO_PORT 0x00
|
||||
// To know which part of RAM to dump, we listen to port 2, which at the end of
|
||||
// its compilation process, spits its HERE addr to port 2 (MSB first)
|
||||
|
||||
Binary file not shown.
@ -1,7 +1,7 @@
|
||||
( When building a compiled dict, always include this unit at
|
||||
the end of it so that Forth knows how to hook LATEST into
|
||||
it )
|
||||
(entry) _______
|
||||
(entry) _
|
||||
|
||||
( After each dummy word like this, we poke IO port 2 with our
|
||||
current HERE value. The staging executable needs it to know
|
||||
|
||||
323
forth/forth.asm
323
forth/forth.asm
@ -26,19 +26,14 @@
|
||||
.equ RS_ADDR 0xf000
|
||||
; Number of bytes we keep as a padding between HERE and the scratchpad
|
||||
.equ PADDING 0x20
|
||||
; Max length of dict entry names
|
||||
.equ NAMELEN 7
|
||||
; Offset of the code link relative to the beginning of the word
|
||||
.equ CODELINK_OFFSET NAMELEN+3
|
||||
; Buffer where WORD copies its read word to. It's significantly larger than
|
||||
; NAMELEN, but who knows, in a comment, we might have a very long word...
|
||||
; Buffer where WORD copies its read word to.
|
||||
.equ WORD_BUFSIZE 0x20
|
||||
; Allocated space for sysvars (see comment above SYSVCNT)
|
||||
.equ SYSV_BUFSIZE 0x10
|
||||
|
||||
; Flags for the "flag field" of the word structure
|
||||
; IMMEDIATE word
|
||||
.equ FLAG_IMMED 0
|
||||
.equ FLAG_IMMED 7
|
||||
|
||||
; *** Variables ***
|
||||
.equ INITIAL_SP RAMSTART
|
||||
@ -131,7 +126,7 @@ forthMain:
|
||||
ld hl, HERE_INITIAL
|
||||
ld (HERE), hl
|
||||
; Set up PARSEPTR
|
||||
ld hl, PARSE-CODELINK_OFFSET
|
||||
ld hl, .parseName
|
||||
call find
|
||||
ld (PARSEPTR), de
|
||||
; Set up CINPTR
|
||||
@ -150,6 +145,8 @@ forthMain:
|
||||
push hl
|
||||
jp EXECUTE+2
|
||||
|
||||
.parseName:
|
||||
.db "(parse)", 0
|
||||
.cinName:
|
||||
.db "(c<)", 0
|
||||
|
||||
@ -221,13 +218,17 @@ addHL:
|
||||
; Copy string from (HL) in (DE), that is, copy bytes until a null char is
|
||||
; encountered. The null char is also copied.
|
||||
; HL and DE point to the char right after the null char.
|
||||
; B indicates the length of the copied string, including null-termination.
|
||||
strcpy:
|
||||
ld b, 0
|
||||
.loop:
|
||||
ld a, (hl)
|
||||
ld (de), a
|
||||
inc hl
|
||||
inc de
|
||||
inc b
|
||||
or a
|
||||
jr nz, strcpy
|
||||
jr nz, .loop
|
||||
ret
|
||||
|
||||
; Compares strings pointed to by HL and DE until one of them hits its null char.
|
||||
@ -254,38 +255,6 @@ strcmp:
|
||||
; early, set otherwise)
|
||||
ret
|
||||
|
||||
; Compares strings pointed to by HL and DE up to NAMELEN count of characters. If
|
||||
; equal, Z is set. If not equal, Z is reset.
|
||||
strncmp:
|
||||
push bc
|
||||
push hl
|
||||
push de
|
||||
|
||||
ld b, NAMELEN
|
||||
.loop:
|
||||
ld a, (de)
|
||||
cp (hl)
|
||||
jr nz, .end ; not equal? break early. NZ is carried out
|
||||
; to the called
|
||||
or a ; If our chars are null, stop the cmp
|
||||
jr z, .end ; The positive result will be carried to the
|
||||
; caller
|
||||
inc hl
|
||||
inc de
|
||||
djnz .loop
|
||||
; We went through all chars with success, but our current Z flag is
|
||||
; unset because of the cp 0. Let's do a dummy CP to set the Z flag.
|
||||
cp a
|
||||
|
||||
.end:
|
||||
pop de
|
||||
pop hl
|
||||
pop bc
|
||||
; Because we don't call anything else than CP that modify the Z flag,
|
||||
; our Z value will be that of the last cp (reset if we broke the loop
|
||||
; early, set otherwise)
|
||||
ret
|
||||
|
||||
; Given a string at (HL), move HL until it points to the end of that string.
|
||||
strskip:
|
||||
push bc
|
||||
@ -370,51 +339,82 @@ parseDecimal:
|
||||
; point to that entry.
|
||||
; Z if found, NZ if not.
|
||||
find:
|
||||
push hl
|
||||
push bc
|
||||
ld de, (CURRENT)
|
||||
ld bc, CODELINK_OFFSET
|
||||
.inner:
|
||||
; DE is a wordref, let's go to beginning of struct
|
||||
push de ; --> lvl 1
|
||||
or a ; clear carry
|
||||
ex de, hl
|
||||
sbc hl, bc
|
||||
ex de, hl ; We're good, DE points to word name
|
||||
call strncmp
|
||||
pop de ; <-- lvl 1, return to wordref
|
||||
jr z, .end ; found
|
||||
push hl ; .prev destroys HL
|
||||
call .prev
|
||||
pop hl
|
||||
jr nz, .inner
|
||||
; Z set? end of dict unset Z
|
||||
push hl
|
||||
; First, figure out string len
|
||||
ld bc, 0
|
||||
xor a
|
||||
inc a
|
||||
.end:
|
||||
pop bc
|
||||
pop hl
|
||||
ret
|
||||
|
||||
; For DE being a wordref, move DE to the previous wordref.
|
||||
; Z is set if DE point to 0 (no entry). NZ if not.
|
||||
.prev:
|
||||
cpir
|
||||
; C has our length, negative, -1
|
||||
ld a, c
|
||||
neg
|
||||
dec a
|
||||
; special case. zero len? we never find anything.
|
||||
jr z, .fail
|
||||
ld c, a ; C holds our length
|
||||
; Let's do something weird: We'll hold HL by the *tail*. Because of our
|
||||
; dict structure and because we know our lengths, it's easier to
|
||||
; compare starting from the end. Currently, after CPIR, HL points to
|
||||
; char after null. Let's adjust
|
||||
; Because the compare loop pre-decrements, instead of DECing HL twice,
|
||||
; we DEC it once.
|
||||
dec hl
|
||||
ld de, (CURRENT)
|
||||
.inner:
|
||||
; DE is a wordref. First step, do our len correspond?
|
||||
push hl ; --> lvl 1
|
||||
push de ; --> lvl 2
|
||||
dec de
|
||||
ld a, (de)
|
||||
and 0x7f ; remove IMMEDIATE flag
|
||||
cp c
|
||||
jr nz, .loopend
|
||||
; match, let's compare the string then
|
||||
dec de \ dec de ; skip prev field. One less because we
|
||||
; pre-decrement
|
||||
ld b, c ; loop C times
|
||||
.loop:
|
||||
; pre-decrement for easier Z matching
|
||||
dec de
|
||||
dec hl
|
||||
ld a, (de)
|
||||
cp (hl)
|
||||
jr nz, .loopend
|
||||
djnz .loop
|
||||
.loopend:
|
||||
; At this point, Z is set if we have a match. In all cases, we want
|
||||
; to pop HL and DE
|
||||
pop de ; <-- lvl 2
|
||||
pop hl ; <-- lvl 1
|
||||
jr z, .end ; match? we're done!
|
||||
; no match, go to prev and continue
|
||||
push hl ; --> lvl 1
|
||||
dec de \ dec de \ dec de ; prev field
|
||||
push de ; --> lvl 1
|
||||
push de ; --> lvl 2
|
||||
ex de, hl
|
||||
call intoHL
|
||||
ex de, hl ; DE contains prev offset
|
||||
pop hl ; <-- lvl 1
|
||||
pop hl ; <-- lvl 2
|
||||
; HL is prev field's addr
|
||||
; Is offset zero?
|
||||
ld a, d
|
||||
or e
|
||||
ret z ; no prev entry
|
||||
jr z, .noprev ; no prev entry
|
||||
; get absolute addr from offset
|
||||
; carry cleared from "or e"
|
||||
sbc hl, de
|
||||
ex de, hl ; result in DE
|
||||
ret ; NZ set from SBC
|
||||
.noprev:
|
||||
pop hl ; <-- lvl 1
|
||||
jr nz, .inner ; try to match again
|
||||
; Z set? end of dict unset Z
|
||||
.fail:
|
||||
xor a
|
||||
inc a
|
||||
.end:
|
||||
pop hl
|
||||
pop bc
|
||||
ret
|
||||
|
||||
; Checks flags Z and S and sets BC to 0 if Z, 1 if C and -1 otherwise
|
||||
flagsToBC:
|
||||
@ -495,15 +495,19 @@ chkPS:
|
||||
; *** Dictionary ***
|
||||
; It's important that this part is at the end of the resulting binary.
|
||||
; A dictionary entry has this structure:
|
||||
; - 7b name (zero-padded)
|
||||
; - Xb name. Arbitrary long number of character (but can't be bigger than
|
||||
; input buffer, of course). not null-terminated
|
||||
; - 2b prev offset
|
||||
; - 1b flags (bit 0: IMMEDIATE)
|
||||
; - 1b size + IMMEDIATE flag
|
||||
; - 2b code pointer
|
||||
; - Parameter field (PF)
|
||||
;
|
||||
; The prev offset is the number of bytes between the prev field and the
|
||||
; previous word's code pointer.
|
||||
;
|
||||
; The size + flag indicate the size of the name field, with the 7th bit
|
||||
; being the IMMEDIATE flag.
|
||||
;
|
||||
; The code pointer point to "word routines". These routines expect to be called
|
||||
; with IY pointing to the PF. They themselves are expected to end by jumping
|
||||
; to the address at (IP). They will usually do so with "jp next".
|
||||
@ -611,9 +615,8 @@ LIT:
|
||||
; Pop previous IP from Return stack and execute it.
|
||||
; ( R:I -- )
|
||||
.db "EXIT"
|
||||
.fill 3
|
||||
.dw 0
|
||||
.db 0
|
||||
.db 4
|
||||
EXIT:
|
||||
.dw nativeWord
|
||||
call popRSIP
|
||||
@ -621,9 +624,8 @@ EXIT:
|
||||
|
||||
; ( R:I -- )
|
||||
.db "QUIT"
|
||||
.fill 3
|
||||
.dw $-EXIT
|
||||
.db 0
|
||||
.db 4
|
||||
QUIT:
|
||||
.dw compiledWord
|
||||
.dw ZERO
|
||||
@ -638,9 +640,8 @@ QUIT:
|
||||
jp next
|
||||
|
||||
.db "ABORT"
|
||||
.fill 2
|
||||
.dw $-QUIT
|
||||
.db 0
|
||||
.db 5
|
||||
ABORT:
|
||||
.dw compiledWord
|
||||
.dw .private
|
||||
@ -664,9 +665,8 @@ abortUnderflow:
|
||||
.dw ABORT
|
||||
|
||||
.db "BYE"
|
||||
.fill 4
|
||||
.dw $-ABORT
|
||||
.db 0
|
||||
.db 3
|
||||
BYE:
|
||||
.dw nativeWord
|
||||
; Goodbye Forth! Before we go, let's restore the stack
|
||||
@ -679,9 +679,8 @@ BYE:
|
||||
|
||||
; ( c -- )
|
||||
.db "EMIT"
|
||||
.fill 3
|
||||
.dw $-BYE
|
||||
.db 0
|
||||
.db 4
|
||||
EMIT:
|
||||
.dw nativeWord
|
||||
pop hl
|
||||
@ -692,7 +691,7 @@ EMIT:
|
||||
|
||||
.db "(print)"
|
||||
.dw $-EMIT
|
||||
.db 0
|
||||
.db 7
|
||||
PRINT:
|
||||
.dw nativeWord
|
||||
pop hl
|
||||
@ -706,9 +705,8 @@ PRINT:
|
||||
jr .loop
|
||||
|
||||
.db "C,"
|
||||
.fill 5
|
||||
.dw $-PRINT
|
||||
.db 0
|
||||
.db 2
|
||||
CWR:
|
||||
.dw nativeWord
|
||||
pop de
|
||||
@ -721,9 +719,8 @@ CWR:
|
||||
|
||||
|
||||
.db ","
|
||||
.fill 6
|
||||
.dw $-CWR
|
||||
.db 0
|
||||
.db 1
|
||||
WR:
|
||||
.dw nativeWord
|
||||
pop de
|
||||
@ -736,7 +733,7 @@ WR:
|
||||
|
||||
.db "ROUTINE"
|
||||
.dw $-WR
|
||||
.db 1 ; IMMEDIATE
|
||||
.db 0x87 ; IMMEDIATE
|
||||
ROUTINE:
|
||||
.dw compiledWord
|
||||
.dw WORD
|
||||
@ -791,7 +788,7 @@ ROUTINE:
|
||||
; ( addr -- )
|
||||
.db "EXECUTE"
|
||||
.dw $-ROUTINE
|
||||
.db 0
|
||||
.db 7
|
||||
EXECUTE:
|
||||
.dw nativeWord
|
||||
pop iy ; is a wordref
|
||||
@ -806,9 +803,8 @@ EXECUTE:
|
||||
|
||||
|
||||
.db ";"
|
||||
.fill 6
|
||||
.dw $-EXECUTE
|
||||
.db 1 ; IMMEDIATE
|
||||
.db 0x81 ; IMMEDIATE
|
||||
ENDDEF:
|
||||
.dw compiledWord
|
||||
.dw NUMBER
|
||||
@ -821,9 +817,8 @@ ENDDEF:
|
||||
.dw EXIT
|
||||
|
||||
.db ":"
|
||||
.fill 6
|
||||
.dw $-ENDDEF
|
||||
.db 1 ; IMMEDIATE
|
||||
.db 0x81 ; IMMEDIATE
|
||||
DEFINE:
|
||||
.dw compiledWord
|
||||
.dw ENTRYHEAD
|
||||
@ -865,9 +860,8 @@ DEFINE:
|
||||
|
||||
|
||||
.db "DOES>"
|
||||
.fill 2
|
||||
.dw $-DEFINE
|
||||
.db 0
|
||||
.db 5
|
||||
DOES:
|
||||
.dw nativeWord
|
||||
; We run this when we're in an entry creation context. Many things we
|
||||
@ -886,9 +880,9 @@ DOES:
|
||||
jp EXIT+2
|
||||
|
||||
|
||||
.db "IMMEDIA"
|
||||
.db "IMMEDIATE"
|
||||
.dw $-DOES
|
||||
.db 0
|
||||
.db 9
|
||||
IMMEDIATE:
|
||||
.dw nativeWord
|
||||
ld hl, (CURRENT)
|
||||
@ -898,9 +892,8 @@ IMMEDIATE:
|
||||
|
||||
|
||||
.db "IMMED?"
|
||||
.fill 1
|
||||
.dw $-IMMEDIATE
|
||||
.db 0
|
||||
.db 6
|
||||
ISIMMED:
|
||||
.dw nativeWord
|
||||
pop hl
|
||||
@ -916,9 +909,8 @@ ISIMMED:
|
||||
|
||||
; ( n -- )
|
||||
.db "LITN"
|
||||
.fill 3
|
||||
.dw $-ISIMMED
|
||||
.db 0
|
||||
.db 4
|
||||
LITN:
|
||||
.dw nativeWord
|
||||
ld hl, (HERE)
|
||||
@ -931,9 +923,8 @@ LITN:
|
||||
jp next
|
||||
|
||||
.db "SCPY"
|
||||
.fill 3
|
||||
.dw $-LITN
|
||||
.db 0
|
||||
.db 4
|
||||
SCPY:
|
||||
.dw nativeWord
|
||||
pop hl
|
||||
@ -944,9 +935,8 @@ SCPY:
|
||||
|
||||
|
||||
.db "(find)"
|
||||
.fill 1
|
||||
.dw $-SCPY
|
||||
.db 0
|
||||
.db 6
|
||||
FIND_:
|
||||
.dw nativeWord
|
||||
pop hl
|
||||
@ -965,9 +955,8 @@ FIND_:
|
||||
|
||||
; ( -- c )
|
||||
.db "KEY"
|
||||
.fill 4
|
||||
.dw $-FIND_
|
||||
.db 0
|
||||
.db 3
|
||||
KEY:
|
||||
.dw nativeWord
|
||||
call GETC
|
||||
@ -979,9 +968,8 @@ KEY:
|
||||
; This is an indirect word that can be redirected through "CINPTR"
|
||||
; code: it is replaced in readln.fs.
|
||||
.db "C<"
|
||||
.fill 5
|
||||
.dw $-KEY
|
||||
.db 0
|
||||
.db 2
|
||||
CIN:
|
||||
.dw compiledWord
|
||||
.dw NUMBER
|
||||
@ -997,9 +985,8 @@ CIN:
|
||||
; Hadn't we wanted to normalize, we'd have written:
|
||||
; 32 CMP 1 -
|
||||
.db "WS?"
|
||||
.fill 4
|
||||
.dw $-CIN
|
||||
.db 0
|
||||
.db 3
|
||||
ISWS:
|
||||
.dw compiledWord
|
||||
.dw NUMBER
|
||||
@ -1011,9 +998,8 @@ ISWS:
|
||||
.dw EXIT
|
||||
|
||||
.db "NOT"
|
||||
.fill 4
|
||||
.dw $-ISWS
|
||||
.db 0
|
||||
.db 3
|
||||
NOT:
|
||||
.dw nativeWord
|
||||
pop hl
|
||||
@ -1031,9 +1017,8 @@ NOT:
|
||||
; ( -- c )
|
||||
; C< DUP 32 CMP 1 - SKIP? EXIT DROP TOWORD
|
||||
.db "TOWORD"
|
||||
.fill 1
|
||||
.dw $-NOT
|
||||
.db 0
|
||||
.db 6
|
||||
TOWORD:
|
||||
.dw compiledWord
|
||||
.dw CIN
|
||||
@ -1048,9 +1033,8 @@ TOWORD:
|
||||
; Read word from C<, copy to WORDBUF, null-terminate, and return, make
|
||||
; HL point to WORDBUF.
|
||||
.db "WORD"
|
||||
.fill 3
|
||||
.dw $-TOWORD
|
||||
.db 0
|
||||
.db 4
|
||||
WORD:
|
||||
.dw compiledWord
|
||||
.dw NUMBER ; ( a )
|
||||
@ -1095,9 +1079,9 @@ WORD:
|
||||
jp next
|
||||
|
||||
|
||||
.db "(parsed"
|
||||
.db "(parsed)"
|
||||
.dw $-WORD
|
||||
.db 0
|
||||
.db 8
|
||||
PARSED:
|
||||
.dw nativeWord
|
||||
pop hl
|
||||
@ -1118,7 +1102,7 @@ PARSED:
|
||||
|
||||
.db "(parse)"
|
||||
.dw $-PARSED
|
||||
.db 0
|
||||
.db 7
|
||||
PARSE:
|
||||
.dw compiledWord
|
||||
.dw PARSED
|
||||
@ -1148,7 +1132,7 @@ PARSEI:
|
||||
; HL points to new (HERE)
|
||||
.db "(entry)"
|
||||
.dw $-PARSE
|
||||
.db 0
|
||||
.db 7
|
||||
ENTRYHEAD:
|
||||
.dw compiledWord
|
||||
.dw WORD
|
||||
@ -1160,19 +1144,21 @@ ENTRYHEAD:
|
||||
pop hl
|
||||
ld de, (HERE)
|
||||
call strcpy
|
||||
ld hl, (HERE)
|
||||
; DE point to char after null, rewind.
|
||||
dec de
|
||||
; B counts the null, adjust
|
||||
dec b
|
||||
ld a, b
|
||||
ex de, hl ; HL points to new HERE
|
||||
ld de, (CURRENT)
|
||||
ld a, NAMELEN
|
||||
call addHL
|
||||
push hl ; --> lvl 1
|
||||
or a ; clear carry
|
||||
sbc hl, de
|
||||
ex de, hl
|
||||
pop hl ; <-- lvl 1
|
||||
call DEinHL
|
||||
; Set word flags: not IMMED, so it's 0
|
||||
xor a
|
||||
ld (hl), a
|
||||
; Save size
|
||||
ld (hl), b
|
||||
inc hl
|
||||
ld (CURRENT), hl
|
||||
ld (HERE), hl
|
||||
@ -1180,47 +1166,44 @@ ENTRYHEAD:
|
||||
|
||||
|
||||
.db "HERE"
|
||||
.fill 3
|
||||
.dw $-ENTRYHEAD
|
||||
.db 0
|
||||
.db 4
|
||||
HERE_: ; Caution: conflicts with actual variable name
|
||||
.dw sysvarWord
|
||||
.dw HERE
|
||||
|
||||
.db "CURRENT"
|
||||
.dw $-HERE_
|
||||
.db 0
|
||||
.db 7
|
||||
CURRENT_:
|
||||
.dw sysvarWord
|
||||
.dw CURRENT
|
||||
|
||||
.db "(parse*"
|
||||
.db "(parse*)"
|
||||
.dw $-CURRENT_
|
||||
.db 0
|
||||
.db 8
|
||||
PARSEPTR_:
|
||||
.dw sysvarWord
|
||||
.dw PARSEPTR
|
||||
|
||||
.db "FLAGS"
|
||||
.fill 2
|
||||
.dw $-PARSEPTR_
|
||||
.db 0
|
||||
.db 5
|
||||
FLAGS_:
|
||||
.dw sysvarWord
|
||||
.dw FLAGS
|
||||
|
||||
.db "SYSVNXT"
|
||||
.dw $-FLAGS_
|
||||
.db 0
|
||||
.db 7
|
||||
SYSVNXT_:
|
||||
.dw sysvarWord
|
||||
.dw SYSVNXT
|
||||
|
||||
; ( n a -- )
|
||||
.db "!"
|
||||
.fill 6
|
||||
.dw $-SYSVNXT_
|
||||
.db 0
|
||||
.db 1
|
||||
STORE:
|
||||
.dw nativeWord
|
||||
pop iy
|
||||
@ -1232,9 +1215,8 @@ STORE:
|
||||
|
||||
; ( a -- n )
|
||||
.db "@"
|
||||
.fill 6
|
||||
.dw $-STORE
|
||||
.db 0
|
||||
.db 1
|
||||
FETCH:
|
||||
.dw nativeWord
|
||||
pop hl
|
||||
@ -1245,9 +1227,8 @@ FETCH:
|
||||
|
||||
; ( a -- )
|
||||
.db "DROP"
|
||||
.fill 3
|
||||
.dw $-FETCH
|
||||
.db 0
|
||||
.db 4
|
||||
DROP:
|
||||
.dw nativeWord
|
||||
pop hl
|
||||
@ -1255,9 +1236,8 @@ DROP:
|
||||
|
||||
; ( a b -- b a )
|
||||
.db "SWAP"
|
||||
.fill 3
|
||||
.dw $-DROP
|
||||
.db 0
|
||||
.db 4
|
||||
SWAP:
|
||||
.dw nativeWord
|
||||
pop hl
|
||||
@ -1268,9 +1248,8 @@ SWAP:
|
||||
|
||||
; ( a -- a a )
|
||||
.db "DUP"
|
||||
.fill 4
|
||||
.dw $-SWAP
|
||||
.db 0
|
||||
.db 3
|
||||
DUP:
|
||||
.dw nativeWord
|
||||
pop hl
|
||||
@ -1281,9 +1260,8 @@ DUP:
|
||||
|
||||
; ( a b -- a b a )
|
||||
.db "OVER"
|
||||
.fill 3
|
||||
.dw $-DUP
|
||||
.db 0
|
||||
.db 4
|
||||
OVER:
|
||||
.dw nativeWord
|
||||
pop hl ; B
|
||||
@ -1295,9 +1273,8 @@ OVER:
|
||||
jp next
|
||||
|
||||
.db ">R"
|
||||
.fill 5
|
||||
.dw $-OVER
|
||||
.db 0
|
||||
.db 2
|
||||
P2R:
|
||||
.dw nativeWord
|
||||
pop hl
|
||||
@ -1306,9 +1283,8 @@ P2R:
|
||||
jp next
|
||||
|
||||
.db "R>"
|
||||
.fill 5
|
||||
.dw $-P2R
|
||||
.db 0
|
||||
.db 2
|
||||
R2P:
|
||||
.dw nativeWord
|
||||
call popRS
|
||||
@ -1316,9 +1292,8 @@ R2P:
|
||||
jp next
|
||||
|
||||
.db "I"
|
||||
.fill 6
|
||||
.dw $-R2P
|
||||
.db 0
|
||||
.db 1
|
||||
I:
|
||||
.dw nativeWord
|
||||
ld l, (ix)
|
||||
@ -1327,9 +1302,8 @@ I:
|
||||
jp next
|
||||
|
||||
.db "I'"
|
||||
.fill 5
|
||||
.dw $-I
|
||||
.db 0
|
||||
.db 2
|
||||
IPRIME:
|
||||
.dw nativeWord
|
||||
ld l, (ix-2)
|
||||
@ -1338,9 +1312,8 @@ IPRIME:
|
||||
jp next
|
||||
|
||||
.db "J"
|
||||
.fill 6
|
||||
.dw $-IPRIME
|
||||
.db 0
|
||||
.db 1
|
||||
J:
|
||||
.dw nativeWord
|
||||
ld l, (ix-4)
|
||||
@ -1350,9 +1323,8 @@ J:
|
||||
|
||||
; ( a b -- c ) A + B
|
||||
.db "+"
|
||||
.fill 6
|
||||
.dw $-J
|
||||
.db 0
|
||||
.db 1
|
||||
PLUS:
|
||||
.dw nativeWord
|
||||
pop hl
|
||||
@ -1364,9 +1336,8 @@ PLUS:
|
||||
|
||||
; ( a b -- c ) A - B
|
||||
.db "-"
|
||||
.fill 6
|
||||
.dw $-PLUS
|
||||
.db 0
|
||||
.db 1
|
||||
MINUS:
|
||||
.dw nativeWord
|
||||
pop de ; B
|
||||
@ -1379,9 +1350,8 @@ MINUS:
|
||||
|
||||
; ( a b -- c ) A * B
|
||||
.db "*"
|
||||
.fill 6
|
||||
.dw $-MINUS
|
||||
.db 0
|
||||
.db 1
|
||||
MULT:
|
||||
.dw nativeWord
|
||||
pop de
|
||||
@ -1410,9 +1380,8 @@ MULT:
|
||||
; really adds up when we compare total size.
|
||||
|
||||
.db "0"
|
||||
.fill 6
|
||||
.dw $-MULT
|
||||
.db 0
|
||||
.db 1
|
||||
ZERO:
|
||||
.dw nativeWord
|
||||
ld hl, 0
|
||||
@ -1420,9 +1389,8 @@ ZERO:
|
||||
jp next
|
||||
|
||||
.db "1"
|
||||
.fill 6
|
||||
.dw $-ZERO
|
||||
.db 0
|
||||
.db 1
|
||||
ONE:
|
||||
.dw nativeWord
|
||||
ld hl, 1
|
||||
@ -1431,9 +1399,8 @@ ONE:
|
||||
|
||||
; ( a1 a2 -- b )
|
||||
.db "SCMP"
|
||||
.fill 3
|
||||
.dw $-ONE
|
||||
.db 0
|
||||
.db 4
|
||||
SCMP:
|
||||
.dw nativeWord
|
||||
pop de
|
||||
@ -1446,9 +1413,8 @@ SCMP:
|
||||
|
||||
; ( n1 n2 -- f )
|
||||
.db "CMP"
|
||||
.fill 4
|
||||
.dw $-SCMP
|
||||
.db 0
|
||||
.db 3
|
||||
CMP:
|
||||
.dw nativeWord
|
||||
pop hl
|
||||
@ -1464,9 +1430,8 @@ CMP:
|
||||
; it's easy: we inc by 2. If it's a NUMBER, we inc by 4. If it's a LIT, we skip
|
||||
; to after null-termination.
|
||||
.db "SKIP?"
|
||||
.fill 2
|
||||
.dw $-CMP
|
||||
.db 0
|
||||
.db 5
|
||||
CSKIP:
|
||||
.dw nativeWord
|
||||
pop hl
|
||||
@ -1522,9 +1487,8 @@ CSKIP:
|
||||
; where to branch to. For example, The branching cell of "IF THEN" would
|
||||
; contain 3. Add this value to RS.
|
||||
.db "(fbr)"
|
||||
.fill 2
|
||||
.dw $-CSKIP
|
||||
.db 0
|
||||
.db 5
|
||||
FBR:
|
||||
.dw nativeWord
|
||||
push de
|
||||
@ -1536,9 +1500,8 @@ FBR:
|
||||
jp next
|
||||
|
||||
.db "(bbr)"
|
||||
.fill 2
|
||||
.dw $-FBR
|
||||
.db 0
|
||||
.db 5
|
||||
BBR:
|
||||
.dw nativeWord
|
||||
ld hl, (IP)
|
||||
@ -1552,7 +1515,5 @@ BBR:
|
||||
; To allow dict binaries to "hook themselves up", we always end such binary
|
||||
; with a dummy, *empty* entry. Therefore, we can have a predictable place for
|
||||
; getting a prev label.
|
||||
|
||||
.db "_______"
|
||||
.dw $-BBR
|
||||
.db 0
|
||||
|
||||
Loading…
Reference in New Issue
Block a user