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z80/8086: extract 2>R code from stable ABI zone
Only its jump at 0x33 remains. I've also fixed a strange offset oddity in 8086's (n) placement. It was off by 2, but strangely, it ran properly. Anyway, now it's fixed.
This commit is contained in:
Virgil Dupras
parent
94cb76520a
commit
650481f849
4
blk/091
4
blk/091
@ -5,8 +5,8 @@ sets that don't change (well, not without some binary manipu-
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lation). Here's the complete list of these references:
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04 BOOT addr 06 (uflw) addr 08 LATEST
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42 EXIT wordref 53 (br) wordref 67 (?br) wordref
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80 (loop) wordref a9 2>R wordref bf (n) wordref
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33 2>R wordref 42 EXIT wordref 53 (br) wordref
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67 (?br) wordref 80 (loop) wordref bf (n) wordref
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d4 (s) wordref
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BOOT and (uflw) exist because they are referred to before those
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2
blk/283
2
blk/283
@ -10,5 +10,5 @@ NOP, NOP, NOP, NOP, ( unused )
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0 JP, ( RST 28 )
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NOP, NOP, NOP, NOP, NOP, ( unused )
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0 JP, ( RST 30 )
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NOP, NOP, NOP, NOP, NOP, ( unused )
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0 A, 0 JP, ( 33, 2>R ) NOP, ( unused )
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0 JP, ( RST 38 )
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5
blk/286
5
blk/286
@ -1,7 +1,4 @@
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CODE 2>R ( 0xa9 )
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DE POP, HL POP,
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17 BCALL, ( 17 == pushRS ) EXDEHL, 17 BCALL,
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;CODE NOP, NOP, NOP,
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ORG @ 0xb9 + HERE !
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CODE (n) ( 0xbf, number literal )
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( Literal value to push to stack is next to (n) reference
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in the atom list. That is where IP is currently pointing.
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11
blk/288
11
blk/288
@ -1,11 +1,14 @@
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CODE >R
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HL POP,
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17 BCALL, ( 17 == pushRS )
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HL POP, 17 BCALL, ( 17 == pushRS )
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;CODE
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CODE R>
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20 BCALL, ( 20 == popRS )
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HL PUSH,
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20 BCALL, ( 20 == popRS ) HL PUSH,
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;CODE
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CODE 2>R ( 0xa9 )
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PC ORG @ 0x35 + ! ( stable ABI JP )
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DE POP, HL POP,
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17 BCALL, ( 17 == pushRS ) EXDEHL, 17 BCALL,
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;CODE NOP, NOP, NOP,
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CODE 2R>
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20 BCALL, ( 20 == popRS ) EXDEHL, 20 BCALL,
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HL PUSH, DE PUSH,
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2
blk/397
2
blk/397
@ -1,6 +1,6 @@
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( Now we have "as late as possible" stuff. See B70 and B270. )
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: _bchk DUP 0x7f + 0xff > IF LIT< br-ovfl (print) ABORT THEN ;
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: DO 0xa9 ( 2>R ) , H@ ; IMMEDIATE
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: DO 0x33 ( 2>R ) , H@ ; IMMEDIATE
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: LOOP 0x80 ( loop ) , H@ - _bchk , ; IMMEDIATE
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( LEAVE is implemented in low xcomp )
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: LITN 0xbf ( n ) , , ;
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2
blk/805
2
blk/805
@ -12,4 +12,4 @@ JMPn, 0 A,, ( 1a, next ) 0 A, 0 A,, ( unused )
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0 A, 0 A,, ( unused )
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0 A, 0 A,, 0 A, 0 A, ( unused )
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0 A, 0 A,, ( unused )
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JMPn, 0 A,, ( 33, execute ) 0 A, 0 A, 0 A, 0 A,, ( unused )
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0 A, JMPn, 0 A,, ( 33, 2>R ) 0 A, 0 A, 0 A,, ( unused )
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7
blk/807
7
blk/807
@ -5,11 +5,8 @@ CODE (loop) ( 0x80 )
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JNZ, L2 @ RPCs, ( branch )
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( don't branch )
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BP 4 SUBxi, JMPs, L1 @ RPCs,
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ORG @ 0xa3 + HERE !
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CODE 2>R ( 0xa9 )
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[BP] 4 POP[w]+, [BP] 2 POP[w]+, BP 4 ADDxi,
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;CODE NOP, NOP, NOP, NOP, NOP,
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ORG @ 0xb9 + HERE !
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CODE (n) ( 0xbf, number literal )
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DI DX MOVxx, DI [DI] MOVx[], DI PUSHx,
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DX INCx, DX INCx,
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;CODE NOP, NOP,
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;CODE NOP, NOP, NOP, NOP,
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2
blk/810
2
blk/810
@ -1,4 +1,4 @@
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lblexec BSET PC 0x36 - ORG @ 0x34 + ! ( DI -> wordref )
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lblexec BSET ( DI -> wordref )
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AL [DI] MOVr[], DI INCx, ( PFA )
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AL AL ORrr, IFZ, DI JMPr, THEN, ( native )
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AL DECr, IFNZ, ( cell or does )
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8
blk/813
8
blk/813
@ -7,10 +7,10 @@ CODE >R 1 chkPS,
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CODE R>
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[BP] 0 PUSH[w]+, BP DECx, BP DECx,
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;CODE
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CODE 2>R
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PC 0x37 - ORG @ 0x35 + ! ( stable abi )
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[BP] 4 POP[w]+, [BP] 2 POP[w]+, BP 4 ADDxi,
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;CODE
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CODE 2R> 2 chkPS,
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[BP] -2 PUSH[w]+, [BP] 0 PUSH[w]+, BP 4 SUBxi,
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;CODE
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CODE ROT ( a b c -- b c a ) 3 chkPS,
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CX POPx, BX POPx, AX POPx,
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BX PUSHx, CX PUSHx, AX PUSHx,
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;CODE
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4
blk/814
4
blk/814
@ -1,3 +1,7 @@
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CODE ROT ( a b c -- b c a ) 3 chkPS,
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CX POPx, BX POPx, AX POPx,
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BX PUSHx, CX PUSHx, AX PUSHx,
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;CODE
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CODE DUP 1 chkPS, AX POPx, AX PUSHx, AX PUSHx, ;CODE
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CODE ?DUP 1 chkPS, AX POPx, AX AX ORxx, AX PUSHx,
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IFNZ, AX PUSHx, THEN, ;CODE
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BIN
cvm/forth.bin
BIN
cvm/forth.bin
Binary file not shown.
@ -10,6 +10,8 @@ CREATE BIN( 0 ,
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270 LOAD ( xcomp overrides )
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H@ ORG !
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ORG @ 0x33 + HERE !
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0 C, 0x04 C, ( 2>R )
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ORG @ 0x3b + HERE !
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," EXIT"
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0 , ( prev ) 4 C,
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@ -21,13 +23,12 @@ ORG @ 0x5f + HERE !
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0x02 CODE (?br) ( 0x67 )
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ORG @ 0x77 + HERE !
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0x03 CODE (loop) ( 0x80 )
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ORG @ 0xa3 + HERE !
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0x04 CODE 2>R ( 0xa9 )
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ORG @ 0xb9 + HERE !
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0x05 CODE (n) ( 0xbf )
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ORG @ 0xce + HERE !
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0x06 CODE (s) ( 0xd4 )
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( END OF STABLE ABI )
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0x04 CODE 2>R
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0x07 CODE >R
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0x08 CODE R>
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0x09 CODE 2R>
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@ -7,7 +7,7 @@ BLKFS = $(CDIR)/blkfs
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.PHONY: all
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all: $(TARGETS)
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forth: forth.c $(OBJS) $(CDIR)/blkfs
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forth: forth.c $(OBJS) $(BLKFS)
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$(CC) forth.c $(OBJS) -lncurses -o $@
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libz80/libz80.o: libz80/z80.c
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@ -17,7 +17,7 @@ libz80/libz80.o: libz80/z80.c
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emul.o: emul.c forth.bin $(BLKFS)
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$(CC) -DFBIN_PATH=\"`pwd`/forth.bin\" -DBLKFS_PATH=\"`pwd`/$(BLKFS)\" -c -o emul.o emul.c
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forth.bin: xcomp.fs $(STAGE)
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forth.bin: xcomp.fs $(STAGE) $(BLKFS)
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$(CDIR)/stage < xcomp.fs > $@
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$(BLKFS): $(STAGE)
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