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Bring EXECUTE word outside of stable ABI

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This commit is contained in:
Virgil Dupras 2020-04-15 13:31:51 -04:00
parent 22f132094a
commit 728e4ce123
3 changed files with 21 additions and 23 deletions
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BIN
emul/forth/z80c.bin
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41
forth/boot.fs
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@ -31,13 +31,13 @@ RAMSTART 0x4e + JPnn, ( 28, RST 28 )
0 JPnn, ( 2b, doesWord ) 0 JPnn, ( 2b, doesWord )
NOP, NOP, ( 2e, unused ) NOP, NOP, ( 2e, unused )
RAMSTART 0x4e + JPnn, ( RST 30 ) RAMSTART 0x4e + JPnn, ( RST 30 )
NOP, NOP, NOP, ( unused ) 0 JPnn, ( 33, execute )
NOP, NOP, ( unused ) NOP, NOP, ( unused )
RAMSTART 0x4e + JPnn, ( RST 38 ) RAMSTART 0x4e + JPnn, ( RST 38 )
NOP, ( unused ) NOP, ( unused )
( BOOT DICT ( BOOT DICT
There are only 5 words in the boot dict, but these words' There are only 3 words in the boot dict, but these words'
offset need to be stable, so they're part of the "stable offset need to be stable, so they're part of the "stable
ABI" ABI"
) )
@ -70,7 +70,7 @@ L2 BSET ( used in CBR )
'(' A, '?' A, 'b' A, 'r' A, ')' A, '(' A, '?' A, 'b' A, 'r' A, ')' A,
PC L1 @ - A,, ( prev ) PC L1 @ - A,, ( prev )
5 A, 5 A,
L1 BSET ( CBR ) H@ XCURRENT ! ( set current tip of dict )
0x17 A,, ( nativeWord ) 0x17 A,, ( nativeWord )
HL POPqq, HL POPqq,
chkPS, chkPS,
@ -84,22 +84,6 @@ L1 BSET ( CBR )
RAMSTART 0x06 + LD(nn)HL, ( RAMSTART+0x06 == IP ) RAMSTART 0x06 + LD(nn)HL, ( RAMSTART+0x06 == IP )
JPNEXT, JPNEXT,
'E' A, 'X' A, 'E' A, 'C' A, 'U' A, 'T' A, 'E' A,
PC L1 @ - A,, ( prev )
7 A,
H@ XCURRENT ! ( set current tip of dict )
L2 BSET ( used frequently below )
0x17 A,, ( nativeWord )
IY POPqq, ( is a wordref )
chkPS,
L 0 IY+ LDrIXY,
H 1 IY+ LDrIXY,
( HL points to code pointer )
IY INCss,
IY INCss,
( IY points to PFA )
JP(HL),
( END OF STABLE ABI ) ( END OF STABLE ABI )
( Name of BOOT word ) ( Name of BOOT word )
@ -130,7 +114,7 @@ PC ORG @ 1 + ! ( main )
HL L1 @ LDddnn, HL L1 @ LDddnn,
0x03 CALLnn, ( 03 == find ) 0x03 CALLnn, ( 03 == find )
DE PUSHqq, DE PUSHqq,
L2 @ 2 + JPnn, 0x33 JPnn, ( 33 == execute )
PC ORG @ 4 + ! ( find ) PC ORG @ 4 + ! ( find )
( Find the entry corresponding to word name where (HL) points ( Find the entry corresponding to word name where (HL) points
@ -238,7 +222,7 @@ L1 BSET ( abortUnderflow )
DE RAMSTART 0x02 + LDdd(nn), ( RAM+02 == CURRENT ) DE RAMSTART 0x02 + LDdd(nn), ( RAM+02 == CURRENT )
0x03 CALLnn, ( find ) 0x03 CALLnn, ( find )
DE PUSHqq, DE PUSHqq,
L2 @ 2 + JPnn, ( EXECUTE, skip nativeWord ) 0x33 JPnn, ( 33 == execute )
PC ORG @ 0x1e + ! ( chkPS ) PC ORG @ 0x1e + ! ( chkPS )
@ -282,7 +266,18 @@ PC ORG @ 0x1b + ! ( next )
HL INCss, HL INCss,
D (HL) LDrr, D (HL) LDrr,
DE PUSHqq, DE PUSHqq,
L2 @ 2 + JPnn, ( EXECUTE, skip nativeWord ) ( continue to execute )
PC ORG @ 0x34 + ! ( execute )
IY POPqq, ( is a wordref )
chkPS,
L 0 IY+ LDrIXY,
H 1 IY+ LDrIXY,
( HL points to code pointer )
IY INCss,
IY INCss,
( IY points to PFA )
JP(HL),
( WORD ROUTINES ) ( WORD ROUTINES )
@ -302,7 +297,7 @@ PC ORG @ 0x0f + ! ( compiledWord )
L 0 IY+ LDrIXY, L 0 IY+ LDrIXY,
H 1 IY+ LDrIXY, H 1 IY+ LDrIXY,
HL PUSHqq, ( arg for EXECUTE ) HL PUSHqq, ( arg for EXECUTE )
L2 @ 2 + JPnn, ( EXECUTE, skip nativeWord ) 0x33 JPnn, ( 33 == execute )
PC ORG @ 0x0c + ! ( cellWord ) PC ORG @ 0x0c + ! ( cellWord )
( Pushes the PFA directly ) ( Pushes the PFA directly )

3
forth/z80c.fs
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@ -14,6 +14,9 @@
This unit expects the same conf as boot.fs. This unit expects the same conf as boot.fs.
) )
CODE EXECUTE
0x33 JPnn, ( 33 == execute )
( a b c -- b c a ) ( a b c -- b c a )
CODE ROT CODE ROT
HL POPqq, ( C ) HL POPqq, ( C )