rajamesandClaude Opus 5.5
4bdb210a99
The boot runs POST with the runner (v4/system/post.c) after the capsules:
it feeds the 538 cases to the node and judges them from outside. A
case's printing no longer reaches the console. What the cases define
stays in the dictionary, as in v3; the system is sealed after POST and
the boot prints PARITY:V4_SYSTEM word_count=N dict_hash=..., as v3 prints
its parity after POST.
Gone: capsules/v4/post79.4th and its blocks 7000 up; the harness words;
(CATCH) and (EMIT-HOOK), with what EMIT and the prompt loop did for them.
The generator runs v3 on the lines as the kernel sends them, without the
capsule's "T| ". One expected result follows from that: >IN.initial
prints 6, not 9.
make -C v4 test, sanitize and hosted-check pass; amd64, aarch64 and
riscv64 boot, POST 538 of 538, word_count=411, dict_hash
0x6fb1d09418b189ee on all six: logs/20261007-105118, -105335, -105651.
T{ is unknown at the prompt; RS1 prints 42 42 before and after COLD. A
scratch build with one expectation changed names the case and ends
PARITY:FAIL, POST: FAILED.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
392 lines
18 KiB
Plaintext
392 lines
18 KiB
Plaintext
\ quit.v4 -- a line of text, interpreted; how it ends; and the words that
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\ print text written in the source.
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\
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\ DECOMPOSITION.md 5.15 and 5.10: QUIT ABORT ABORT" (ABORT") ." (."). Part of
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\ the compiler capsule. Rests on all the files before it.
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\
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\ A NODE IS SENT TEXT (docs/v4.0.0/MESH.md section 6). It does not read its
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\ own command line and prints no prompt. A node with nothing to do waits at
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\ its ports; a neighbour writes it a message; if that is text for this node
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\ it is interpreted; what it printed goes back as a message, and then a
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\ message saying how the text ended:
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\ 1 it completed a console says " ok"
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\ 2 it ended in an error the message is already printed; " ERROR"
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\ 0 QUIT nothing is said
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\ What a console then shows is v3's:
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\ ok> 65 EMIT the console's prompt, and the line
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\ A ok what the line printed, then " ok"
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\ ok> NOSUCH
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\ UNKNOWN WORD: 'NOSUCH'
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\ ERROR
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\ ok> -1 @
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\ Address out of range an address fault (D-14), from any depth
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\ ERROR
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\ KEY, EXPECT and QUERY are FORTH-79 words that read characters, as before;
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\ they are not how text reaches the node. They still read the console's
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\ registers, CONSOLE-RX and CONSOLE-STATUS, and not a message.
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\
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\ THE STACKS are guarded (D-16): each counts what it holds, and a push onto
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\ a full one or a pop from an empty one is a fault. So QUIT and ABORT, which
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\ never return to whatever ran them, must empty the return stack, and ABORT
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\ the data stack too. A store to RSTACK-DEPTH or DSTACK-DEPTH does that.
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\
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\ Constants the loader supplies:
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\ (LINE-STATUS) word address of the variable: how the last text ended
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\ (MSG) (REPLY) (ME) (OUT) (OUT^) see core.v4, "what a node prints"
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\ (PORT) word address of the node's port 0; (PORT)+8 is "any port" and
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\ (PORT)+9 the port the last read from that came on
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\ (Q) word address of four cells of scratch, which system.v4 and
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\ blocks.v4 use too
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\ DSTACK-DEPTH RSTACK-DEPTH word addresses of the stack registers
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\ ( -- ) empty the return stack. `a` is only something to store: any
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\ store to the register empties the stack, and `a` needs nothing to be on
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\ the data stack. One cell of the data stack is used for a moment.
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macro R-CLEAR RSTACK-DEPTH b! a !b endmacro
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\ ( -- ) stop compiling; forget the word being built and any open control
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\ structures. A definition that was under way stays hidden.
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: (RESET) 0 STATE a! ! (CG-RESET) CFBASE (CFP) a! ! ;
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\ ( s -- ) the text is done with. What it printed is sent, then a message
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\ saying how it ended -- 0 QUIT, 1 completed, 2 an error -- and the node waits
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\ for the next. (DONE) is entered with the same number and, for an error,
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\ stops compiling first; it is always jumped to, never called, by
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\ something that has emptied the return stack (or by a fault, which empties
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\ it). (LINE-STATUS) keeps how the last text ended.
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: (FINISH) ( s -- )
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(LINE-STATUS) b! dup !b
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(FLUSH-OUT)
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(DONE-PORT) a! @ (GATE) (MSG)+1 a! @ !b \ to whoever sent the text
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3 (HDR) 4 !b !b \ a message of type 3, four characters long: how it ended
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jump (IDLE)
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: (DONE)
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if GO -1 + if OK
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drop (RESET) 2 jump (FINISH)
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OK: drop 1 jump (FINISH)
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GO: drop 0 jump (FINISH)
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\ ( -- ) WAITING. A node with nothing to do deals with the oldest of the
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\ messages waiting (core.v4). With none waiting it is blocked reading its
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\ ports (docs/v4.0.0/MESH.md 4.1): it executes nothing until a neighbour
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\ writes, and what arrives is taken in as any message is, its first word
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\ from any port and the rest from the port that came on. The message's
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\ text goes into TIB, which holds 1024 characters, the most a message
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\ carries; one that came with a length no message has is error 12. A
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\ message of type 1 for this node is text to interpret: it is done as a
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\ line was, and (FINISH) reports how it ended. A message for another node
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\ is passed on, (PASS-ON).
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: (IDLE)
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L: (MQ#) a! @ if WAIT drop jump HAVE
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WAIT: drop (PORT)+8 b! @b (PORT)+9 b! @b (PORT) + dup b! \ ( to port ) B: the port it came on
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SWAP (TAKE) jump L
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HAVE:
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(MQ@) (MSG) a! ! (MQ@) (MSG)+1 a! ! (MQ@) (MSG)+2 a! ! (MQ@) (MSG)+3 a! !
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(MQ@) (MSG)+4 a! ! (MQ@) (MSG)+5 a! ! (MQ@) (MSG)+6 a! ! (MQ@) (REPLY) a! !
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(MSG)+6 a! @ -if SIZED
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drop 0 (MSG)+6 a! ! 0 SPAN a! ! NODE-ERROR b! 12 !b \ no telling what it was
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SIZED: drop
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TIB 2/ 2/ (MSG)+6 a! @ 3 + 2/ 2/ if EMPTY
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-1 + FOR (MQ@) over a! ! 1 + NEXT
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drop jump READ
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EMPTY: drop drop
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READ:
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0 (MSG)+6 a! @ TIB + C! \ a zero after the text
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(MSG)+6 a! @ SPAN a! !
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(MSG) a! @ (ME) a! @ xor if MINE drop jump (PASS-ON)
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MINE: drop
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(MSG)+2 a! @ -1 + if TEXT drop jump (IDLE) \ for this node and not text: let go
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TEXT: drop
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(MSG)+1 a! @ (PORT-FOR) if D0 jump D1 \ the way back to whoever sent it:
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D0: drop (REPLY) a! @ \ the port it came on, if no other is known
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D1: (DONE-PORT) a! !
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(CONSOLE) a! @ if P0 jump P1 \ where what it prints goes: the console,
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P0: drop (MSG)+1 a! @ \ or whoever sent it
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P1: dup (PRINT-TO) a! !
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(PORT-FOR) if Q0 jump Q1
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Q0: drop (REPLY) a! @
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Q1: (PRINT-PORT) a! !
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jump (LINE)
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\ ( -- ) A MESSAGE FOR ANOTHER NODE is passed on (MESH.md section 7): all
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\ of it, as it came, to the port that leads toward that node. With no way
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\ known it is let go, and (LOST) counts it.
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: (PASS-ON)
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(MSG) a! @ (PORT-FOR) if NOWAY
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(GATE) (MSG) a! 6 FOR @+ !b UNEXT \ its seven words
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(MSG)+6 a! @ 3 + 2/ 2/ if SENT
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-1 + TIB 2/ 2/ a! FOR @+ !b UNEXT \ and its text
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jump (IDLE)
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SENT: drop jump (IDLE)
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NOWAY: drop (LOST) a! @ 1 + ! jump (IDLE)
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\ ( -- ) THE TEXT, INTERPRETED. It is in TIB with a zero after it and its
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\ length in SPAN, and the return stack is empty. It is interpreted with one
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\ return entry under it, this word's call of INTERPRET; whatever is on the
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\ data stack stays there.
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: (LINE)
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0 BLK a! ! \ the terminal, whatever was being loaded
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TIB (SRC) a! ! 0 >IN a! !
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0 NODE-ERROR b! !b
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INTERPRET
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NODE-ERROR b! @b if GOOD
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drop 2 jump (DONE)
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GOOD: drop 1 jump (DONE)
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\ ---- the node among others (MESH.md sections 6 and 7) ---------------------------
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\ Not FORTH-79 and not in v3: v3's VMs are sent to through the kernel.
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\ ( node port -- ) the port, by its number, leads toward that node
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header ROUTE
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: ROUTE
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(ROUTE#) a! @ -16 + if FULL drop
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(PORT) + (ROUTE#) a! @ 2* (ROUTES) + a!
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push !+ pop !+
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(ROUTE#) a! @ 1 + ! ;
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FULL: drop drop drop NODE-ERROR b! 12 !b ;
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\ ( node port -- ) the node on the other end of the port, by its number;
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\ 0: none, or a device. Whoever wires the node tells it, and tells it again
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\ when the wiring changes. It is what lets one of two neighbours, and one
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\ only, wait to write to the other (core.v4, (GATE)).
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header NEIGHBOUR
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: NEIGHBOUR
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dup -if POS jump BAD
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POS: -PORTS + -if BAD drop (NEAR) + a! ! ;
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BAD: drop drop drop NODE-ERROR b! 12 !b ;
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\ ( port -- ) the port, by its number, leads toward every node not told of
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header DEFAULT-ROUTE
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: DEFAULT-ROUTE (PORT) + (ROUTE-DEFAULT) a! ! ;
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\ ( -- ) forget every way: for when the wiring has changed
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header NO-ROUTES
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: NO-ROUTES 0 (ROUTE#) a! ! 0 (ROUTE-DEFAULT) a! ! ;
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\ ( baddr u node port -- ) send the node u characters of text to
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\ interpret, by the port given, by its address. It is on its way when this
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\ returns. The write waits for the neighbour to read, and is not begun
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\ until it may be (core.v4, (GATE)).
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: (SEND-ON)
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(GATE) !b \ to
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1 (HDR)
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dup !b \ length
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3 + 2/ 2/ if NONE -1 +
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FOR dup C@ over 1 + C@ 8* + over 2 + C@ 8* 8* + over 3 + C@ 8* 8* 8* + !b 4 + NEXT
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drop ;
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NONE: drop drop ;
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\ ( baddr u node -- ) send the node u characters of text to interpret,
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\ by the way this node knows to it. What it prints there goes to that
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\ node's console. With no way to the node it is error 12.
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header SEND
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: SEND
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dup (PORT-FOR) if NOWAY jump (SEND-ON)
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NOWAY: drop drop drop drop NODE-ERROR b! 12 !b ;
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\ ( baddr u node port -- ) the same by a port this node names, by its
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\ number, whatever ways it knows: for a neighbour that has no number of
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\ its own yet, to which text is sent as to node 0.
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header SEND-ON
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: SEND-ON
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dup -if POS jump BAD
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POS: -PORTS + -if BAD drop (PORT) + jump (SEND-ON)
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BAD: drop drop drop drop drop NODE-ERROR b! 12 !b ;
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\ ( node -- how ) WAIT FOR THE NODE'S WORD OF HOW TEXT ENDED: 0 QUIT,
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\ 1 completed, 2 an error. This node is blocked reading its ports until a
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\ message of type 3 comes for it from that node; every other message that
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\ comes meanwhile is kept with the messages waiting. It waits for ever
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\ for a node that never answers.
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header AWAIT
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: AWAIT
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(AWAIT-FROM) a! !
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L: (PORT)+8 b! @b (PORT)+9 b! @b (PORT) + dup b! SWAP (TAKE-HDR)
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(MQ-HDR) a! @ (ME) a! @ xor if A1 drop jump KEEP
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A1: drop (MQ-HDR)+2 a! @ -3 + if A2 drop jump KEEP
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A2: drop (MQ-HDR)+1 a! @ (AWAIT-FROM) a! @ xor if A3 drop jump KEEP
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A3: drop (MQ-HDR)+6 a! @ -4 + if A4 drop jump KEEP
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A4: drop @b ; \ its one word
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KEEP: (TAKE-KEEP) jump L
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\ ( w port -- ) write a cell to the port, by its number. It waits until
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\ the neighbour has taken it. This is how a node is sent a capsule of F18
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\ code (docs/v4.0.0/MESH.md section 5): the cells go as they are, not as a
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\ message, to a node that is executing from its ports.
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header PORT!
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: PORT!
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dup -if POS jump BAD
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POS: -PORTS + -if BAD drop (PORT) + b! !b ;
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BAD: drop drop drop NODE-ERROR b! 12 !b ;
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\ ( -- ) WHAT IS IN THE DICTIONARY NOW IS THE SYSTEM: COLD comes back to
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\ it and FORGET will not go below it. Whoever has loaded a node's capsules
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\ has it do this (system.v4, (BOOT) and FENCE).
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header (SEAL)
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: (SEAL)
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DP a! @ (BOOT) a! !
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(LATEST) a! @ (BOOT)+1 a! !
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DP a! @ 3 + 2/ 2/ FENCE a! ! ;
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\ FORTH-79: clear the return stack, set execution mode, return control to
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\ the terminal; no message is given. The data stack is left as it is.
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\ NODE-ERROR, by name: how a definition written in FORTH raises an error.
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\ A store of a code that is not zero is the trap of D-18 -- the word goes no
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\ further, the message for the code is printed (-1: the word has printed
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\ its own) and the line ends with ERROR. The codes are listed in core.v4.
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header NODE-ERROR inline : NODE-ERROR' NODE-ERROR ;
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header (ME) inline : (ME)' (ME) ;
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header (CONSOLE) inline : (CONSOLE)' (CONSOLE) ;
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header (LOST) inline : (LOST)' (LOST) ;
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header (WORD-DEFINED) inline : (WORD-DEFINED)' (WORD-DEFINED) ;
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header (WORD-FORGOTTEN) inline : (WORD-FORGOTTEN)' (WORD-FORGOTTEN) ;
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header QUIT
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: QUIT R-CLEAR (RESET) CR 0 jump (DONE)
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\ FORTH-79: clear the data and return stacks, set execution mode, return
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\ control to the terminal. As v3, the line it stops ends with " ok".
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\ Both are emptied before anything is called: ABORT may be run with the
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\ return stack full.
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header ABORT
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: ABORT R-CLEAR DSTACK-DEPTH b! a !b (RESET) 1 jump (DONE)
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\ ---- faults (D-14, D-16) -------------------------------------------------------
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\ Where the node goes when a programme uses an address outside its memory,
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\ pushes onto a full stack or pops an empty one. The opcode that faulted did
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\ nothing, and both stacks have been emptied. Each handler says what happened;
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\ whatever was running is abandoned, as by ABORT, and the line ends with
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\ ERROR.
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: (FAULT) \ "Address out of range"
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$72646441 (EMIT4) $20737365 (EMIT4) $2074756F (EMIT4) $7220666F (EMIT4) $65676E61 (EMIT4) CR
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2 jump (DONE)
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: (D-OVER) \ "Stack overflow"
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$63617453 (EMIT4) $766F206B (EMIT4) $6C667265 (EMIT4) $776F (EMIT4) CR
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2 jump (DONE)
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: (D-UNDER) \ "Stack underflow"
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$63617453 (EMIT4) $6E75206B (EMIT4) $66726564 (EMIT4) $776F6C (EMIT4) CR
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2 jump (DONE)
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: (R-OVER) \ "Return stack overflow"
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$75746552 (EMIT4) $73206E72 (EMIT4) $6B636174 (EMIT4) $65766F20 (EMIT4) $6F6C6672 (EMIT4) $77 (EMIT4) CR
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2 jump (DONE)
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: (R-UNDER) \ "Return stack underflow"
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$75746552 (EMIT4) $73206E72 (EMIT4) $6B636174 (EMIT4) $646E7520 (EMIT4) $6C667265 (EMIT4) $776F (EMIT4) CR
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2 jump (DONE)
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\ A word has stored an error code in NODE-ERROR (D-18; the codes are listed
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\ in core.v4). Print its message -- a negative code means the word printed
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\ its own -- and end the line with ERROR. The return stack has been
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\ emptied; the data stack is as the word left it.
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: (RAISED)
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NODE-ERROR b! @b
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-if POS drop 2 jump (DONE)
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POS: -1 + if M1 -1 + if M2 -1 + if M3 -1 + if M4
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-1 + if M5 -1 + if M6 -1 + if M7 -1 + if M8 -1 + if M9
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-1 + if M10 -1 + if M11 -1 + if M12 -1 + if M13 -1 + if M14
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-1 + if M15 -1 + if M16 -1 + if M17
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drop 2 jump (DONE)
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M1: drop $6167654E (EMIT4) $65766974 (EMIT4) $756F6320 (EMIT4) $746E (EMIT4) CR 2 jump (DONE)
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M2: drop $20746F4E (EMIT4) $756E2061 (EMIT4) $7265626D (EMIT4) CR 2 jump (DONE)
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M3: drop $626D754E (EMIT4) $74207265 (EMIT4) $6C206F6F (EMIT4) $676E6F (EMIT4) CR 2 jump (DONE)
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M4: drop $20746F4E (EMIT4) $68632061 (EMIT4) $63617261 (EMIT4) $726574 (EMIT4) CR 2 jump (DONE)
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M5: drop $74636944 (EMIT4) $616E6F69 (EMIT4) $66207972 (EMIT4) $6C6C75 (EMIT4) CR 2 jump (DONE)
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M6: drop $656D614E (EMIT4) $73696D20 (EMIT4) $676E6973 (EMIT4) CR 2 jump (DONE)
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M7: drop $746E6F43 (EMIT4) $206C6F72 (EMIT4) $75727473 (EMIT4) $72757463 (EMIT4) $696D2065 (EMIT4) $74616D73 (EMIT4) $6863 (EMIT4) CR 2 jump (DONE)
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M8: drop $746E6F43 (EMIT4) $206C6F72 (EMIT4) $75727473 (EMIT4) $72757463 (EMIT4) $74207365 (EMIT4) $64206F6F (EMIT4) $706565 (EMIT4) CR 2 jump (DONE)
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M9: drop $66696853 (EMIT4) $6F632074 (EMIT4) $20746E75 (EMIT4) $2074756F (EMIT4) $7220666F (EMIT4) $65676E61 (EMIT4) CR 2 jump (DONE)
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M10: drop $746F7250 (EMIT4) $65746365 (EMIT4) $6F772064 (EMIT4) $6472 (EMIT4) CR 2 jump (DONE)
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M11: drop $69766944 (EMIT4) $6E6F6973 (EMIT4) $20796220 (EMIT4) $6F72657A (EMIT4) CR 2 jump (DONE)
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M12: drop $75677241 (EMIT4) $746E656D (EMIT4) $74756F20 (EMIT4) $20666F20 (EMIT4) $676E6172 (EMIT4) $65 (EMIT4) CR 2 jump (DONE)
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M13: drop $636F6C42 (EMIT4) $756F206B (EMIT4) $666F2074 (EMIT4) $6E617220 (EMIT4) $6567 (EMIT4) CR 2 jump (DONE)
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M14: drop $62206F4E (EMIT4) $6B636F6C (EMIT4) $20736920 (EMIT4) $6E696562 (EMIT4) $6F6C2067 (EMIT4) $64656461 (EMIT4) CR 2 jump (DONE)
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M15: drop $65666544 (EMIT4) $64657272 (EMIT4) $726F7720 (EMIT4) $6F6E2064 (EMIT4) $65732074 (EMIT4) $74 (EMIT4) CR 2 jump (DONE)
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M16: drop $20746F4E (EMIT4) $6F772061 (EMIT4) $6472 (EMIT4) CR 2 jump (DONE)
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M17: drop $726F7453 (EMIT4) $20656761 (EMIT4) $75666572 (EMIT4) $646573 (EMIT4) CR 2 jump (DONE)
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\ The table the loader gives the node: six words, one for each kind of
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\ fault in the node's order, each a jump. A jump fills its word, so they
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\ are one after another.
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: (FAULTS)
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jump (FAULT) jump (D-OVER) jump (D-UNDER) jump (R-OVER) jump (R-UNDER) jump (RAISED)
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\ ---- text in the source ---------------------------------------------------------
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\ The three run-time words have names, as v3's have, so that SEE can tell a
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\ string in a definition from code; they cannot be used from the prompt.
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\ ." and ABORT" take the text up to the next " , which may be none at all
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\ (input.v4's (PARSE)); with no closing " it is the rest of the line. Inside a definition they lay
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\ down a call to their run-time word and, after it, the text as a counted
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\ string: the count byte and the characters, four to a cell, the last cell
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\ filled with zeros. The run-time word finds the string by the return
|
|
\ address the call left, and returns to the cell after the string.
|
|
|
|
\ ( -- ) lay the counted string in WBUF into the dictionary, as above.
|
|
\ (Q)+0 how many bytes are still to go, (Q)+1 which is next.
|
|
: (STRING,)
|
|
(FLUSH)
|
|
WBUF C@ 1 + (Q) a! ! 0 (Q)+1 a! !
|
|
L: (Q) a! @ if DONE -1 + !
|
|
(Q)+1 a! @ dup 1 + ! WBUF + C@ C,
|
|
jump L
|
|
DONE: drop
|
|
P: DP b! @b 3 and if ALIGNED drop 0 C, jump P
|
|
ALIGNED: drop ;
|
|
|
|
\ The run time of ." : print the string after the call, go on after it.
|
|
\ It takes the return address off before it calls anything and keeps the
|
|
\ count there instead, so a word that prints text goes no deeper than one
|
|
\ that calls any other word.
|
|
header (.") compile-only
|
|
: (.")
|
|
pop 4* dup C@ \ baddr n
|
|
L: if DONE
|
|
push 1 + dup C@ EMIT pop -1 + jump L
|
|
DONE: drop 4/ 1 + push ; \ the cell after the last character
|
|
|
|
\ FORTH-79: ." text" prints the text -- now, if interpreting; when the word
|
|
\ it is compiled into runs, if compiling.
|
|
header ." immediate
|
|
: DOT-QUOTE
|
|
34 (PARSE) drop
|
|
STATE a! @ if NOW
|
|
drop &(.") (CALL,) jump (STRING,)
|
|
NOW: drop WBUF COUNT jump TYPE
|
|
|
|
\ ( flag -- ) the run time of ABORT" : if the flag is not zero print the
|
|
\ string after the call, start a new line and ABORT; otherwise go on after
|
|
\ the string.
|
|
header (ABORT") compile-only
|
|
: (ABORT")
|
|
if NO
|
|
drop pop 4* R-CLEAR COUNT TYPE CR jump ABORT
|
|
NO: drop pop 4* dup C@ + 4/ 1 + push ;
|
|
|
|
\ ( flag -- ) ABORT" text" as v3 (it is FORTH-83's, not FORTH-79's): if
|
|
\ the flag is not zero, print the text and ABORT.
|
|
header ABORT" immediate
|
|
: ABORT-QUOTE
|
|
34 (PARSE) drop
|
|
STATE a! @ if NOW
|
|
drop &(ABORT") (CALL,) jump (STRING,)
|
|
NOW: drop if NO
|
|
drop WBUF COUNT TYPE CR jump ABORT
|
|
NO: drop ;
|
|
|
|
\ The run time of S" : leave the address and length of the string after the
|
|
\ call, and go on after it.
|
|
header (S") compile-only
|
|
: (S")
|
|
pop 4* dup C@ \ baddr n
|
|
over over + 4/ 1 + push \ the cell after the last character
|
|
push 1 + pop ; \ baddr+1 n
|
|
|
|
\ ( -- baddr u ) S" text" as v3. In a definition the text is compiled
|
|
\ into it. At the prompt it is copied to PAD, where it stays until PAD is
|
|
\ used again: WORD's buffer is overwritten by the very next word of the line.
|
|
header S" immediate
|
|
: S-QUOTE
|
|
34 (PARSE) drop
|
|
STATE a! @ if NOW
|
|
drop &(S") (CALL,) jump (STRING,)
|
|
NOW: drop WBUF+1 PAD WBUF C@ CMOVE PAD WBUF jump C@
|