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Extract (s) code from stable ABI zone

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Only its jump addr remains.
This commit is contained in:
Virgil Dupras 2020-07-05 08:54:22 -04:00
parent b626944273
commit 4a91ee5c9c
17 changed files with 74 additions and 77 deletions
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6
blk/091
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@ -5,9 +5,9 @@ sets that don't change (well, not without some binary manipu-
lation). Here's the complete list of these references:
04 BOOT addr 06 (uflw) addr 08 LATEST
33 2>R wordref 42 EXIT wordref 53 (br) wordref
67 (?br) wordref 80 (loop) wordref bf (n) wordref
d4 (s) wordref
2b (s) wordref 33 2>R wordref 42 EXIT wordref
53 (br) wordref 67 (?br) wordref 80 (loop) wordref
bf (n) wordref
BOOT and (uflw) exist because they are referred to before those
words are defined (in core words). LATEST is a critical part

2
blk/283
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@ -8,7 +8,7 @@ NOP, NOP, NOP, ( unused )
NOP, NOP, NOP, NOP, ( unused )
NOP, NOP, NOP, NOP, ( unused )
0 JP, ( RST 28 )
NOP, NOP, NOP, NOP, NOP, ( unused )
0 A, 0 JP, ( 2b, (s) ) NOP, ( unused )
0 JP, ( RST 30 )
0 A, 0 JP, ( 33, 2>R ) NOP, ( unused )
0 JP, ( RST 38 )

1
blk/286
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@ -8,3 +8,4 @@ CODE (n) ( 0xbf, number literal )
IY INCd, IY INCd,
DE PUSH,
;CODE
( END OF STABLE ABI )

11
blk/287
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@ -1,11 +0,0 @@
CODE (s) ( 0xd4, string literal )
( Like (n) but instead of being followed by a 2 bytes
number, it's followed by a string. When called, puts the
string's address on PS )
IY PUSH, HL POP, ( <-- IP )
E (HL) LDrr, D 0 LDri,
DE INCd,
DE ADDIYd,
HL PUSH,
;CODE
( END OF STABLE ABI )

20
blk/306
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@ -1,14 +1,16 @@
( Core words )
( KEY and EMIT are not defined here. There're
expected to be defined in platform-specific code. )
( Native words )
CODE EXECUTE
DE POP,
chkPS,
JR, lblexec BWR ( execute-B301 )
CODE ROT ( a b c -- b c a )
HL POP, ( C ) DE POP, ( B ) BC POP, ( A )
chkPS,
DE PUSH, ( B ) HL PUSH, ( C ) BC PUSH, ( A )
CODE (s) ( string literal )
PC ORG @ 0x2d + ! ( stable ABI JP )
( Like (n) but instead of being followed by a 2 bytes
number, it's followed by a string. When called, puts the
string's address on PS )
IY PUSH, HL POP, ( <-- IP )
E (HL) LDrr, D 0 LDri,
DE INCd,
DE ADDIYd,
HL PUSH,
;CODE

6
blk/307
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@ -1,14 +1,16 @@
CODE ROT ( a b c -- b c a )
HL POP, ( C ) DE POP, ( B ) BC POP, ( A ) chkPS,
DE PUSH, ( B ) HL PUSH, ( C ) BC PUSH, ( A )
;CODE
CODE DUP ( a -- a a )
HL POP, chkPS,
HL PUSH, HL PUSH,
;CODE
CODE ?DUP
HL POP, chkPS,
HL PUSH,
HLZ, IFNZ, HL PUSH, THEN,
;CODE
CODE DROP ( a -- )
HL POP,
;CODE

2
blk/399
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@ -1,4 +1,4 @@
: LIT< 0xd4 ( s ) , WORD DUP C@ 1+ MOVE, ; IMMEDIATE
: LIT< 0x2b ( s ) , WORD DUP C@ 1+ MOVE, ; IMMEDIATE
: BEGIN H@ ; IMMEDIATE
: AGAIN 0x53 ( br ) , H@ - _bchk , ; IMMEDIATE
: UNTIL 0x67 ( ?br ) , H@ - _bchk , ; IMMEDIATE

2
blk/805
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@ -10,6 +10,6 @@ JMPn, 0 A,, ( 1a, next ) 0 A, 0 A,, ( unused )
0 A, 0 A, 0 A, 0 A, ( unused )
0 A, 0 A, 0 A, 0 A, ( unused )
0 A, 0 A,, ( unused )
0 A, 0 A,, 0 A, 0 A, ( unused )
0 A, JMPn, 0 A,, ( 2b, (s) ) 0 A, ( unused )
0 A, 0 A,, ( unused )
0 A, JMPn, 0 A,, ( 33, 2>R ) 0 A, 0 A, 0 A,, ( unused )

3
blk/807
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@ -9,4 +9,5 @@ ORG @ 0xb9 + HERE !
CODE (n) ( 0xbf, number literal )
DI DX MOVxx, DI [DI] MOVx[], DI PUSHx,
DX INCx, DX INCx,
;CODE NOP, NOP, NOP, NOP,
;CODE
( END OF STABLE ABI )

15
blk/808
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@ -1,6 +1,9 @@
CODE (s) ( 0xd4, string literal, see B287 )
DI DX MOVxx, ( IP )
AH AH XORrr, AL [DI] MOVr[], ( slen )
DX PUSHx, DX INCx, DX AX ADDxx,
;CODE
( END OF STABLE ABI )
lblnext BSET PC 0x1d - ORG @ 0x1b + ! ( next )
( RSP check )
AX RS_ADDR MOVxI, BP AX CMPxx,
IFC, ( BP < RS_ADDR )
DI 0x06 MOVxm, JMPs, L1 FWRs ( execute )
THEN,
DI DX MOVxx, ( <-- IP ) DX INCx, DX INCx,
DI [DI] MOVx[], ( wordref )
( continue to execute ) L1 FSET

23
blk/809
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@ -1,9 +1,14 @@
lblnext BSET PC 0x1d - ORG @ 0x1b + ! ( next )
( RSP check )
AX RS_ADDR MOVxI, BP AX CMPxx,
IFC, ( BP < RS_ADDR )
DI 0x06 MOVxm, JMPs, L1 FWRs ( execute )
THEN,
DI DX MOVxx, ( <-- IP ) DX INCx, DX INCx,
DI [DI] MOVx[], ( wordref )
( continue to execute ) L1 FSET
lblexec BSET ( DI -> wordref )
AL [DI] MOVr[], DI INCx, ( PFA )
AL AL ORrr, IFZ, DI JMPr, THEN, ( native )
AL DECr, IFNZ, ( cell or does )
DI PUSHx, ( push PFA )
AL DECr, IFZ, ( cell ) JMPs, lblnext @ RPCs, THEN,
( does, see B302 )
DI INCx, DI INCx, DI [DI] MOVx[],
THEN, ( continue to compiled )
( compiled )
BP INCx, BP INCx, [BP] 0 DX MOV[]+x, ( pushRS )
DX DI MOVxx, DX INCx, DX INCx, ( --> IP )
DI [DI] MOVx[],
JMPs, lblexec @ RPCs,

19
blk/810
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@ -1,14 +1,5 @@
lblexec BSET ( DI -> wordref )
AL [DI] MOVr[], DI INCx, ( PFA )
AL AL ORrr, IFZ, DI JMPr, THEN, ( native )
AL DECr, IFNZ, ( cell or does )
DI PUSHx, ( push PFA )
AL DECr, IFZ, ( cell ) JMPs, lblnext @ RPCs, THEN,
( does, see B302 )
DI INCx, DI INCx, DI [DI] MOVx[],
THEN, ( continue to compiled )
( compiled )
BP INCx, BP INCx, [BP] 0 DX MOV[]+x, ( pushRS )
DX DI MOVxx, DX INCx, DX INCx, ( --> IP )
DI [DI] MOVx[],
JMPs, lblexec @ RPCs,
lblchkPS BSET ( CX -> expected size )
AX PS_ADDR MOVxI, AX SP SUBxx, 2 SUBAXI, ( CALL adjust )
AX CX CMPxx,
IFNC, ( we're good ) RETn, THEN,
( underflow ) DI 0x06 MOVxm, JMPs, lblexec @ RPCs,

14
blk/811
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@ -1,5 +1,9 @@
lblchkPS BSET ( CX -> expected size )
AX PS_ADDR MOVxI, AX SP SUBxx, 2 SUBAXI, ( CALL adjust )
AX CX CMPxx,
IFNC, ( we're good ) RETn, THEN,
( underflow ) DI 0x06 MOVxm, JMPs, lblexec @ RPCs,
PC 3 - ORG @ 1+ ! ( main )
DX POPx, ( boot drive no ) 0x03 DL MOVmr,
SP PS_ADDR MOVxI, BP RS_ADDR MOVxI,
DI 0x08 MOVxm, ( LATEST )
( HERE begins at CURRENT )
SYSVARS 0x4 ( HERE ) + DI MOVmx,
SYSVARS 0x2 ( CURRENT ) + DI MOVmx,
DI 0x04 ( BOOT ) MOVxm,
JMPn, lblexec @ RPCn, ( execute )

19
blk/812
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@ -1,9 +1,10 @@
PC 3 - ORG @ 1+ ! ( main )
DX POPx, ( boot drive no ) 0x03 DL MOVmr,
SP PS_ADDR MOVxI, BP RS_ADDR MOVxI,
DI 0x08 MOVxm, ( LATEST )
( HERE begins at CURRENT )
SYSVARS 0x4 ( HERE ) + DI MOVmx,
SYSVARS 0x2 ( CURRENT ) + DI MOVmx,
DI 0x04 ( BOOT ) MOVxm,
JMPn, lblexec @ RPCn, ( execute )
( native words )
CODE EXECUTE 1 chkPS,
DI POPx, JMPn, lblexec @ RPCn,
CODE (s) ( string literal, see B287 )
PC 0x2f - ORG @ 0x2d + ! ( stable abi )
DI DX MOVxx, ( IP )
AH AH XORrr, AL [DI] MOVr[], ( slen )
DX PUSHx, DX INCx, DX AX ADDxx,
;CODE

3
blk/813
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@ -1,6 +1,3 @@
( native words )
CODE EXECUTE 1 chkPS,
DI POPx, JMPn, lblexec @ RPCn,
CODE >R 1 chkPS,
BP INCx, BP INCx, [BP] 0 POP[w]+,
;CODE NOP, NOP, NOP,

BIN
cvm/forth.bin
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Binary file not shown.

5
cvm/xcomp.fs
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@ -10,6 +10,8 @@ CREATE BIN( 0 ,
270 LOAD ( xcomp overrides )
H@ ORG !
ORG @ 0x2b + HERE !
0 C, 0x06 C, ( (s) )
ORG @ 0x33 + HERE !
0 C, 0x04 C, ( 2>R )
ORG @ 0x3b + HERE !
@ -25,9 +27,8 @@ ORG @ 0x77 + HERE !
0x03 CODE (loop) ( 0x80 )
ORG @ 0xb9 + HERE !
0x05 CODE (n) ( 0xbf )
ORG @ 0xce + HERE !
0x06 CODE (s) ( 0xd4 )
( END OF STABLE ABI )
0x06 CODE (s)
0x04 CODE 2>R
0x07 CODE >R
0x08 CODE R>