Restructure for more reliable reload, modularity
This commit is contained in:
parent
a524f23dfe
commit
3c22f6fe2e
264
asm.fnl
264
asm.fnl
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@ -1,6 +1,5 @@
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(local lume (require "lume"))
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(local {: stream : kvstream : one} (require "stream"))
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(local {: int8-to-bytes : int16-to-bytes} (require "util"))
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(local opcodes {})
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; op mode arg
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@ -33,7 +32,7 @@
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modemap))
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(fn without-modes [modemap ...]
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(let [newmodemap (table.clone modemap)]
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(let [newmodemap (lume.clone modemap)]
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(each [_ mode (pairs [...])]
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(tset newmodemap mode nil))
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newmodemap))
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@ -89,43 +88,6 @@
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[_] [nil nil]
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_ (error (.. "Unrecognized syntax" (fv op)))))
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; dat - anything that takes up space in the assembled output (op, dw, db, etc)
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; takes the form [:op args]
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; pdat - a parsed dat; takes the form {:type type :addr addr ...}
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(local dat-parser {})
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(fn new-block [] {:type :block :pdats [] :symbols {}})
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(fn parse-dats [block dats]
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(each [_ dat (ipairs dats)]
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(if (= (type dat) "string")
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(tset block.symbols dat (+ (length block.pdats) 1))
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(let [opcode (. dat 1)
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parser (. dat-parser opcode)
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pdat
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(if
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parser (parser dat block)
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(. opcodes opcode) (dat-parser.op dat)
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(error (.. "Unrecognized opcode " (fv opcode))))]
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(table.insert block.pdats pdat))))
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block)
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(fn dat-parser.op [op]
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(let [[mode arg] (parse-mode-arg op)]
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{:type :op :opcode (. op 1) : mode : arg}))
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(fn dat-parser.block [block]
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(let [dats (table.clone block)]
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(table.remove dats 1)
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(parse-dats (new-block) dats)))
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(fn dat-parser.db [db] {:type :var :init (. db 2) :size 1})
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(fn dat-parser.dw [dw] {:type :var :init (. dw 2) :size 2})
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(fn dat-parser.bytes [bytes] {:type :raw :bytes (. bytes 2)})
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(fn dat-parser.ref [ref] {:type :ref :target (. ref 2)})
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(fn dat-parser.flatten [flat block]
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(parse-dats block (lume.slice flat 2))
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nil)
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(fn make-env [block parent]
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{:parent parent
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:block block
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@ -153,102 +115,136 @@
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(self.parent:lookup-addr name)))})
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(fn lo [v] (bit.band v 0xff))
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(fn hi [v] (bit.band (bit.rshift v 8) 0xff))
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(fn int8-to-bytes [i]
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(string.char (lo i)))
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(fn int16-to-bytes [i]
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(string.char (lo i) (hi i)))
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(local pdat-processor {
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:op {}
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:var {}
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:ref {}
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:raw {}
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:block {}
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})
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(fn process-pdat [pdat process default ...]
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(pp pdat)
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(local processor (. pdat-processor pdat.type process))
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(if processor (processor pdat ...) default))
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(fn pdat-processor.op.patch [op env]
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(when (and op.mode (= (op.mode:sub 1 4) :addr))
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(let [zp-mode (.. :zp (op.mode:sub 5))
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abs-mode (.. :abs (op.mode:sub 5))
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is-zp (and ((. opcodes op.opcode) zp-mode) (env:is-zp? op.arg))]
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(set op.mode (if is-zp zp-mode abs-mode)))))
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(fn pdat-processor.raw.size [raw] (length raw.bytes))
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(fn pdat-processor.op.size [op] (size op.mode))
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(fn pdat-processor.var.size [d] d.size)
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(fn pdat-processor.ref.size [r] 2)
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(fn pdat-processor.op.bytes [op env]
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(local bytegen (. opcodes op.opcode))
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; (pp op)
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(if bytegen
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(let [opbyte (bytegen op.mode)
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argbytes
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(if
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(and (= op.mode :imm) (= (type op.arg) "function"))
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(int8-to-bytes (op.arg env))
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(= op.mode :imm) (int8-to-bytes op.arg)
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(= op.mode :rel)
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(int8-to-bytes (- (env:lookup-addr op.arg) (+ op.addr 2)))
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(= (size op.mode) 2) (int8-to-bytes (env:lookup-addr op.arg))
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(= (size op.mode) 3) (int16-to-bytes (env:lookup-addr op.arg))
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"")]
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(if opbyte
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(.. (int8-to-bytes opbyte) argbytes)
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(error (.. op.opcode " doesn't support mode " op.mode))))
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""))
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(fn pdat-processor.var.bytes [d env]
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(match d.size
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1 (int8-to-bytes (or d.init 0))
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2 (int16-to-bytes (or d.init 0))
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n (string.rep "\0" n)))
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(fn pdat-processor.ref.bytes [ref env]
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(int16-to-bytes (env:lookup-addr ref.target)))
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(fn pdat-processor.block.symbols [block]
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(lume.keys block.symbols))
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(fn pdat-processor.block.patch [block env]
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(local block-env (make-env block env))
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(each [_ pdat (ipairs block.pdats)]
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(process-pdat pdat :patch nil block-env)))
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(fn pdat-processor.block.allocate [block addr]
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(var size 0)
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(set block.addr addr)
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(each [_ pdat (ipairs block.pdats)]
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(set pdat.addr (+ addr size))
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(process-pdat pdat :allocate nil pdat.addr)
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(local pdatsize (process-pdat pdat :size pdat.size))
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(set pdat.size pdatsize)
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(set pdat.addr (+ addr size))
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(set size (+ size pdatsize)))
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(set block.size size))
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(fn pdat-processor.block.generate [block env]
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(local block-env (make-env block env))
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(var bytes "")
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(each [_ pdat (ipairs block.pdats)]
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(process-pdat pdat :generate nil block-env)
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(local pdatbytes (process-pdat pdat :bytes pdat.bytes block-env))
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(assert (= (type pdatbytes) :string) (.. "failed to generate bytes: " (fv pdat)))
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(set pdat.bytes pdatbytes)
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(set bytes (.. bytes pdatbytes)))
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(set block.bytes bytes))
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(fn program []
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; dat - anything that takes up space in the assembled output (op, dw, db, etc)
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; takes the form [:op args]
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; pdat - a parsed dat; takes the form {:type type :addr addr ...}
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(local dat-parser {})
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(fn new-block [] {:type :block :pdats [] :symbols {}})
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(fn parse-dats [block dats]
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(each [_ dat (ipairs dats)]
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(if (= (type dat) "string")
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(tset block.symbols dat (+ (length block.pdats) 1))
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(let [opcode (. dat 1)
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parser (. dat-parser opcode)
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pdat
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(if
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parser (parser dat block)
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(. opcodes opcode) (dat-parser.op dat)
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(error (.. "Unrecognized opcode " (fv opcode))))]
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(table.insert block.pdats pdat))))
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block)
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(fn dat-parser.op [op]
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(let [[mode arg] (parse-mode-arg op)]
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{:type :op :opcode (. op 1) : mode : arg}))
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(fn dat-parser.block [block]
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(let [dats (lume.clone block)]
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(table.remove dats 1)
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(parse-dats (new-block) dats)))
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(fn dat-parser.db [db] {:type :var :init (. db 2) :size 1})
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(fn dat-parser.dw [dw] {:type :var :init (. dw 2) :size 2})
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(fn dat-parser.bytes [bytes] {:type :raw :bytes (. bytes 2)})
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(fn dat-parser.ref [ref] {:type :ref :target (. ref 2)})
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(fn dat-parser.flatten [flat block]
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(parse-dats block (lume.slice flat 2))
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nil)
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(local pdat-processor {
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:op {}
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:var {}
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:ref {}
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:raw {}
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:block {}
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})
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(fn process-pdat [pdat process default ...]
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(pp pdat)
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(local processor (. pdat-processor pdat.type process))
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(if processor (processor pdat ...) default))
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(fn pdat-processor.op.patch [op env]
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(when (and op.mode (= (op.mode:sub 1 4) :addr))
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(let [zp-mode (.. :zp (op.mode:sub 5))
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abs-mode (.. :abs (op.mode:sub 5))
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is-zp (and ((. opcodes op.opcode) zp-mode) (env:is-zp? op.arg))]
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(set op.mode (if is-zp zp-mode abs-mode)))))
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(fn pdat-processor.raw.size [raw] (length raw.bytes))
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(fn pdat-processor.op.size [op] (size op.mode))
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(fn pdat-processor.var.size [d] d.size)
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(fn pdat-processor.ref.size [r] 2)
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(fn pdat-processor.op.bytes [op env]
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(local bytegen (. opcodes op.opcode))
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; (pp op)
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(if bytegen
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(let [opbyte (bytegen op.mode)
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argbytes
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(if
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(and (= op.mode :imm) (= (type op.arg) "function"))
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(int8-to-bytes (op.arg env))
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(= op.mode :imm) (int8-to-bytes op.arg)
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(= op.mode :rel)
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(int8-to-bytes (- (env:lookup-addr op.arg) (+ op.addr 2)))
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(= (size op.mode) 2) (int8-to-bytes (env:lookup-addr op.arg))
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(= (size op.mode) 3) (int16-to-bytes (env:lookup-addr op.arg))
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"")]
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(if opbyte
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(.. (int8-to-bytes opbyte) argbytes)
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(error (.. op.opcode " doesn't support mode " op.mode))))
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""))
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(fn pdat-processor.var.bytes [d env]
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(match d.size
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1 (int8-to-bytes (or d.init 0))
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2 (int16-to-bytes (or d.init 0))
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n (string.rep "\0" n)))
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(fn pdat-processor.ref.bytes [ref env]
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(int16-to-bytes (env:lookup-addr ref.target)))
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(fn pdat-processor.block.symbols [block]
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(lume.keys block.symbols))
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(fn pdat-processor.block.patch [block env]
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(local block-env (make-env block env))
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(each [_ pdat (ipairs block.pdats)]
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(process-pdat pdat :patch nil block-env)))
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(fn pdat-processor.block.allocate [block addr]
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(var size 0)
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(set block.addr addr)
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(each [_ pdat (ipairs block.pdats)]
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(set pdat.addr (+ addr size))
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(process-pdat pdat :allocate nil pdat.addr)
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(local pdatsize (process-pdat pdat :size pdat.size))
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(set pdat.size pdatsize)
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(set pdat.addr (+ addr size))
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(set size (+ size pdatsize)))
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(set block.size size))
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(fn pdat-processor.block.generate [block env]
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(local block-env (make-env block env))
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(var bytes "")
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(each [_ pdat (ipairs block.pdats)]
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(process-pdat pdat :generate nil block-env)
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(local pdatbytes (process-pdat pdat :bytes pdat.bytes block-env))
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(assert (= (type pdatbytes) :string) (.. "failed to generate bytes: " (fv pdat)))
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(set pdat.bytes pdatbytes)
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(set bytes (.. bytes pdatbytes)))
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(set block.bytes bytes))
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{:type :program
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:org-to-block {}
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:symbol-to-org {}
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:start-symbol :main
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: dat-parser
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: pdat-processor
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: new-block
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:parse-dats (fn [self block dats] (parse-dats block dats))
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:dbg
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(fn [self ...]
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(when self.dbgfile
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@ -311,12 +307,12 @@
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(self:pass :generate)
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(when self.dbgfile
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(self.dbgfile:close)
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(set self.dbgfile nil)))
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(set self.dbgfile nil))
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self)
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:upload
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(fn [self machine]
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(each [org block (pairs self.org-to-block)]
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(machine:write org block.bytes)))
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})
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{: program : dat-parser : pdat-processor : new-block : parse-dats : lo : hi}
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{:new program}
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5
main.lua
5
main.lua
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@ -6,11 +6,6 @@ pp = function(x) print(fv(x)) end
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lume = require("lume")
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luars232 = require("luars232")
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function reload(modname)
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package.loaded[modname] = nil
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return require(modname)
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end
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_coroutine_resume = coroutine.resume
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function coroutine.resume(...)
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local state,result = _coroutine_resume(...)
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156
neut.fnl
Normal file
156
neut.fnl
Normal file
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@ -0,0 +1,156 @@
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(local lume (require "lume"))
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(local asm (require "asm"))
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(local VM (require "vm"))
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(local {: lo : hi} (require "util"))
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(local prg (asm.new))
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; (prg:debug-to "test.dbg")
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(local tiles (prg:org 0x6100))
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(local vm (VM.new prg))
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(local code1 vm.code)
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(local mon {
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:hexout :0xfdda
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:putchar :0xfded
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:bell :0xff3a
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})
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(fn achar [c] (bit.bor (string.byte c) 0x80))
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(fn astr [s]
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(-> [(string.byte s 1 -1)]
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(lume.map #(bit.bor $1 0x80))
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(-> (table.unpack) (string.char))))
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; a handful of debugging words
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(vm:def :.
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[:lda vm.TOPH :x]
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[:jsr mon.hexout]
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[:lda vm.TOP :x]
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[:jsr mon.hexout]
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[:lda (achar " ")]
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[:jsr mon.putchar]
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(vm:drop))
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(vm:def :stacklen
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(vm:reserve)
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[:txa] [:lsr :a] [:sta vm.TOP :x]
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[:lda 0] [:sta vm.TOPH :x])
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(vm:word :.s
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:stacklen (prg:parse-addr vm.TOP) :swap
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(vm:for :dup :get :. :inc :inc) :drop)
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; Graphics routines
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(vm:def :mixed-hires
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[:sta :0xc050]
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[:sta :0xc057]
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[:sta :0xc052])
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; starting address:
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; 0x2000 + (x*2) + (y%4 * 0x100) + ((y/4) * 0x28)
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; x between 0-19
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; y between 0-12
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; yx - 16-bit value, low byte x, high byte y
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(code1:append :screeny-lookup [:bytes "\0\040\080"])
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(vm:def :tile>screen ; yx -- p
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[:lda vm.TOPH :x] ; a=y
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[:lsr :a] [:lsr :a] ; a=y/4
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[:tay] ; y=y/4
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[:lda 0x03]
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[:and vm.TOPH :x] ; a=y%4
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[:ora 0x20] ; a=0x20 + y%4
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[:sta vm.TOPH :x] ; high byte is set (and y is wiped)
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[:lda vm.TOP :x] ; a=x
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[:asl :a] ; a = x*2
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[:clc]
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[:adc :screeny-lookup :y] ; a=x*2 + (y/4)*0x28
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[:sta vm.TOP :x] ; low byte is set
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)
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; note: the graphical tile data must not cross a page boundary!
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; TODO: add support to the assembler for enforcing that
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(fn draw-block []
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[:block
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[:clc]
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[:ldy 8]
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:loop
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[:lda [vm.TOP :x]]
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[:sta [vm.ST1 :x]]
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[:inc vm.TOP :x]
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[:lda vm.ST1H :x]
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[:adc 4]
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[:sta vm.ST1H :x]
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[:dey]
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[:bne :loop]])
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(fn draw-vertical-block []
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[:block
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(draw-block)
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[:lda vm.ST1H :x]
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[:sbc 31] ; with carry clear this is 32
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[:sta vm.ST1H :x]
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[:lda vm.ST1 :x]
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[:ora 0x80]
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[:sta vm.ST1 :x]
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(draw-block)])
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(vm:def :drawtile ; p gfx --
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(draw-vertical-block)
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[:lda vm.ST1H :x]
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[:sbc 31]
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[:sta vm.ST1H :x]
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[:lda vm.ST1 :x]
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[:sbc 0x7f]
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[:sta vm.ST1 :x]
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(draw-vertical-block)
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(vm:drop) (vm:drop))
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(vm:def :cleargfx
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(vm:push 0x4000)
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[:block :page
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[:dec vm.TOPH :x]
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[:lda 0]
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[:block :start
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[:sta [vm.TOP :x]]
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[:inc vm.TOP :x]
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[:bne :start]]
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[:lda vm.TOPH :x]
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[:cmp 0x20]
|
||||
[:bne :page]]
|
||||
(vm:drop))
|
||||
|
||||
(vm:word :drawmaprow ; pscreen pmap -- pmap
|
||||
20 (vm:for
|
||||
:2dup :bget :lookup-tile :drawtile
|
||||
:inc :swap :inc :inc :swap) :swap :drop)
|
||||
|
||||
(vm:word :drawmap
|
||||
:lit :map 0x0c00 (vm:until 0x100 :-
|
||||
:dup :tile>screen ; pmap yx pscreen
|
||||
:<rot :drawmaprow :swap ; pmap yx
|
||||
:dup :not) :drop :drop)
|
||||
|
||||
(vm:def :lookup-tile ; itile -- ptile
|
||||
; each tile is 32 bytes; 2^5
|
||||
; we save some cycles by storing the indices as lllhhhhh, so we don't need to shift them'
|
||||
[:lda vm.TOP :x] [:tay]
|
||||
[:and 0x1f]
|
||||
[:clc] [:adc #(hi tiles.org)]
|
||||
[:sta vm.TOPH :x]
|
||||
[:tya] [:and 0xe0]
|
||||
[:sta vm.TOP :x])
|
||||
|
||||
(tiles:append :blanktile [:bytes "\0\0\0\0\0\0\0\0\0\255\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0 \0\0\0\0\0\0"])
|
||||
(tiles:append :testtile [:bytes "12345678901234567890123456789012"])
|
||||
(tiles:append [:bytes "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"])
|
||||
;; 19x11 means full map is 209 bytes
|
||||
(: (prg:org 0x6800) :append :map [:bytes (string.rep "\0\032\064" 85)])
|
||||
(code1:append :main
|
||||
[:jsr :reset]
|
||||
[:jsr :interpret]
|
||||
[:vm :mixed-hires
|
||||
:cleargfx :drawmap
|
||||
:quit])
|
||||
|
||||
(prg:assemble)
|
||||
479
test.fnl
479
test.fnl
|
|
@ -1,479 +0,0 @@
|
|||
(local lume (require "lume"))
|
||||
(local {: program : dat-parser : new-block : parse-dats : lo : hi} (require "asm"))
|
||||
(local {: stream : kvstream : one} (require "stream"))
|
||||
|
||||
(local prg (program))
|
||||
(local code1 (prg:org 0xc00))
|
||||
(local tiles (prg:org 0x6100))
|
||||
|
||||
(prg:debug-to "test.dbg")
|
||||
|
||||
(fn dat-parser.vm [bytecodes]
|
||||
(local block (new-block))
|
||||
(each [_ bytecode (ipairs (lume.slice bytecodes 2))]
|
||||
(if
|
||||
(= (type bytecode) :number)
|
||||
(parse-dats block [[:ref :lit] [:dw bytecode]])
|
||||
|
||||
(= (type bytecode) :string)
|
||||
(parse-dats block [[:ref bytecode]])
|
||||
|
||||
(= (type bytecode) :table)
|
||||
(parse-dats block [bytecode])
|
||||
|
||||
(error (.. "VM can't parse " (fv bytecode)))))
|
||||
block)
|
||||
(local mon {
|
||||
:hexout :0xfdda
|
||||
:putchar :0xfded
|
||||
:bell :0xff3a
|
||||
})
|
||||
|
||||
(local vm {
|
||||
:IP :0x60
|
||||
:IPH :0x61
|
||||
:W :0x62
|
||||
:WH :0x63
|
||||
:ROFF :0x64
|
||||
:TOP :0x80
|
||||
:TOPH :0x81
|
||||
:ST1 :0x7e
|
||||
:ST1H :0x7f
|
||||
:ST2 :0x7c
|
||||
:ST2H :0x7d
|
||||
:RSTACK :0x6000
|
||||
:ret (fn [self] [:jmp :next])
|
||||
:reserve (fn [self] [:block [:inx] [:inx]])
|
||||
:push
|
||||
(fn [self v]
|
||||
(local l (bit.band v 0xff))
|
||||
(local h (bit.band (bit.rshift v 8) 0xff))
|
||||
[:block (self:reserve)
|
||||
[:lda l]
|
||||
[:sta self.TOP :x]
|
||||
[:lda h]
|
||||
[:sta self.TOPH :x]
|
||||
])
|
||||
:drop (fn [self] [:block [:dex] [:dex]])
|
||||
:def
|
||||
(fn [self name ...]
|
||||
(code1:append name [:flatten ...] (self:ret)))
|
||||
:word
|
||||
(fn [self name ...]
|
||||
(code1:append name [:jsr :subroutine] [:vm ...] [:vm :ret]))
|
||||
:inline
|
||||
(fn [self ...]
|
||||
[:block [:jsr :subroutine] [:vm ...] [:vm :restore]])
|
||||
:asm
|
||||
(fn [self ...]
|
||||
[:block [:vm :native] [:block ...] [:jsr :interpret]])
|
||||
})
|
||||
|
||||
(fn inc16 [l h]
|
||||
[:block
|
||||
[:inc l]
|
||||
[:bne :done]
|
||||
[:inc h]
|
||||
:done
|
||||
])
|
||||
(fn dec16 [l h]
|
||||
[:block
|
||||
[:lda l]
|
||||
[:bne :declow]
|
||||
[:dec h]
|
||||
:declow
|
||||
[:dec l]])
|
||||
|
||||
(fn add16 [l h]
|
||||
[:block
|
||||
[:clc]
|
||||
[:adc l]
|
||||
[:sta l]
|
||||
[:bcc :go]
|
||||
[:inc h]
|
||||
:go
|
||||
])
|
||||
(fn inc16-stk [l h]
|
||||
[:block
|
||||
[:inc l :x]
|
||||
[:bne :done]
|
||||
[:inc h :x]
|
||||
:done])
|
||||
|
||||
(fn achar [c] (bit.bor (string.byte c) 0x80))
|
||||
(fn astr [s]
|
||||
(-> [(string.byte s 1 -1)]
|
||||
(lume.map #(bit.bor $1 0x80))
|
||||
(-> (table.unpack) (string.char))))
|
||||
|
||||
(code1:append :next
|
||||
[:ldy 0]
|
||||
[:lda [vm.IP] :y] [:sta vm.W]
|
||||
(inc16 vm.IP vm.IPH)
|
||||
[:lda [vm.IP] :y] [:sta vm.WH]
|
||||
(inc16 vm.IP vm.IPH)
|
||||
|
||||
; [:lda vm.WH]
|
||||
; [:jsr mon.hexout]
|
||||
; [:lda vm.W]
|
||||
; [:jsr mon.hexout]
|
||||
; [:lda (achar " ")]
|
||||
; [:jsr mon.putchar]
|
||||
|
||||
[:jmp [vm.W]])
|
||||
|
||||
(code1:append :reset
|
||||
[:lda #(lo ($1:lookup-addr :quit))]
|
||||
[:sta vm.IP]
|
||||
[:lda #(hi ($1:lookup-addr :quit))]
|
||||
[:sta vm.IPH]
|
||||
[:lda 0]
|
||||
[:sta vm.ROFF]
|
||||
[:ldx 0xfe]
|
||||
[:rts])
|
||||
|
||||
(vm:def
|
||||
:subroutine ; usage: [jsr :subroutine] followed by bytecode
|
||||
[:ldy vm.ROFF]
|
||||
[:lda vm.IP] [:sta vm.RSTACK :y] [:iny]
|
||||
[:lda vm.IPH] [:sta vm.RSTACK :y] [:iny]
|
||||
[:sty vm.ROFF]
|
||||
:interpret ; usage: [jsr :interpret] followed by bytecode
|
||||
[:pla] [:sta vm.IP] [:pla] [:sta vm.IPH]
|
||||
(inc16 vm.IP vm.IPH))
|
||||
|
||||
(vm:def :ret
|
||||
[:ldy vm.ROFF]
|
||||
[:dey] [:lda vm.RSTACK :y] [:sta vm.IPH]
|
||||
[:dey] [:lda vm.RSTACK :y] [:sta vm.IP]
|
||||
[:sty vm.ROFF])
|
||||
|
||||
(code1:append :native [:jmp [vm.IP]])
|
||||
(code1:append :quit [:rts])
|
||||
(code1:append :restore
|
||||
[:lda vm.IP] [:sta vm.W]
|
||||
[:lda vm.IPH] [:sta vm.WH]
|
||||
[:ldy vm.ROFF]
|
||||
[:dey] [:lda vm.RSTACK :y] [:sta vm.IPH]
|
||||
[:dey] [:lda vm.RSTACK :y] [:sta vm.IP]
|
||||
[:sty vm.ROFF]
|
||||
[:jmp [vm.W]])
|
||||
|
||||
(vm:def :mixed-hires
|
||||
[:sta :0xc050]
|
||||
[:sta :0xc057]
|
||||
[:sta :0xc052])
|
||||
|
||||
(vm:def :drop (vm:drop))
|
||||
|
||||
(vm:def :dup
|
||||
(vm:reserve)
|
||||
[:lda vm.ST1H :x]
|
||||
[:sta vm.TOPH :x]
|
||||
[:lda vm.ST1 :x]
|
||||
[:sta vm.TOP :x])
|
||||
|
||||
(vm:def :swap
|
||||
[:lda vm.TOP :x]
|
||||
[:ldy vm.ST1 :x]
|
||||
[:sty vm.TOP :x]
|
||||
[:sta vm.ST1 :x]
|
||||
[:lda vm.TOPH :x]
|
||||
[:ldy vm.ST1H :x]
|
||||
[:sty vm.TOPH :x]
|
||||
[:sta vm.ST1H :x])
|
||||
|
||||
(vm:def :over
|
||||
(vm:reserve)
|
||||
[:lda vm.ST2H :x]
|
||||
[:sta vm.TOPH :x]
|
||||
[:lda vm.ST2 :x]
|
||||
[:sta vm.TOP :x])
|
||||
(vm:word :2dup :over :over)
|
||||
|
||||
(vm:def :>rot ; (a b c -- c a b)
|
||||
[:lda vm.TOP :x] ; a: c (a b c)
|
||||
[:ldy vm.ST2 :x] ; y: a (a b c)
|
||||
[:sta vm.ST2 :x] ; a: c (c b c)
|
||||
[:lda vm.ST1 :x] ; a: b (c b c)
|
||||
[:sta vm.TOP :x] ; a: b (c b b)
|
||||
[:sty vm.ST1 :x] ; y: a (c a b)
|
||||
[:lda vm.TOPH :x] ; a: c (a b c)
|
||||
[:ldy vm.ST2H :x] ; y: a (a b c)
|
||||
[:sta vm.ST2H :x] ; a: c (c b c)
|
||||
[:lda vm.ST1H :x] ; a: b (c b c)
|
||||
[:sta vm.TOPH :x] ; a: b (c b b)
|
||||
[:sty vm.ST1H :x] ; y: a (c a b)
|
||||
)
|
||||
(vm:def :<rot ; (a b c -- b c a)
|
||||
[:lda vm.TOP :x] ; a: c (a b c)
|
||||
[:ldy vm.ST1 :x] ; y: b (a b c)
|
||||
[:sta vm.ST1 :x] ; a: c (a c c)
|
||||
[:lda vm.ST2 :x] ; a: a (a c c)
|
||||
[:sta vm.TOP :x] ; a: a (a c a)
|
||||
[:sty vm.ST2 :x] ; y: b (b c a)
|
||||
[:lda vm.TOPH :x] ; a: c (a b c)
|
||||
[:ldy vm.ST1H :x] ; y: b (a b c)
|
||||
[:sta vm.ST1H :x] ; a: c (a c c)
|
||||
[:lda vm.ST2H :x] ; a: a (a c c)
|
||||
[:sta vm.TOPH :x] ; a: a (a c a)
|
||||
[:sty vm.ST2H :x] ; y: b (b c a)
|
||||
)
|
||||
|
||||
(vm:def :get
|
||||
[:lda [vm.TOP :x]]
|
||||
[:tay]
|
||||
(inc16-stk vm.TOP vm.TOPH)
|
||||
[:lda [vm.TOP :x]]
|
||||
[:sta vm.TOPH :x]
|
||||
[:sty vm.TOP :x])
|
||||
|
||||
(vm:def :set ; v p --
|
||||
[:lda vm.ST1 :x]
|
||||
[:sta [vm.TOP :x]]
|
||||
(inc16-stk vm.TOP vm.TOPH)
|
||||
[:lda vm.ST1H :x]
|
||||
[:sta [vm.TOP :x]]
|
||||
(vm:drop) (vm:drop))
|
||||
|
||||
(vm:def :bget ; p -- b
|
||||
[:lda [vm.TOP :x]] [:sta vm.TOP :x]
|
||||
[:lda 0] [:sta vm.TOPH :x])
|
||||
|
||||
(vm:def :bset ; b p --
|
||||
[:lda vm.ST1 :x] [:sta [vm.TOP :x]]
|
||||
(vm:drop) (vm:drop))
|
||||
|
||||
(vm:def :lit
|
||||
(vm:reserve) [:ldy 0]
|
||||
[:lda [vm.IP] :y] [:sta vm.TOP :x]
|
||||
(inc16 vm.IP vm.IPH)
|
||||
[:lda [vm.IP] :y] [:sta vm.TOPH :x]
|
||||
(inc16 vm.IP vm.IPH))
|
||||
|
||||
(vm:def :>r ; v --
|
||||
[:ldy vm.ROFF]
|
||||
[:lda vm.TOP :x] [:sta vm.RSTACK :y] [:iny]
|
||||
[:lda vm.TOPH :x] [:sta vm.RSTACK :y] [:iny]
|
||||
[:sty vm.ROFF]
|
||||
(vm:drop))
|
||||
|
||||
(vm:def :r> ; -- v
|
||||
(vm:reserve)
|
||||
[:ldy vm.ROFF]
|
||||
[:dey] [:lda vm.RSTACK :y] [:sta vm.TOPH :x]
|
||||
[:dey] [:lda vm.RSTACK :y] [:sta vm.TOP :x]
|
||||
[:sty vm.ROFF])
|
||||
|
||||
(vm:def :rtop ; -- v
|
||||
(vm:reserve)
|
||||
[:ldy vm.ROFF]
|
||||
[:dey] [:lda vm.RSTACK :y] [:sta vm.TOPH :x]
|
||||
[:dey] [:lda vm.RSTACK :y] [:sta vm.TOP :x])
|
||||
|
||||
(vm:def :rdrop
|
||||
[:ldy vm.ROFF] [:dey] [:dey] [:sty vm.ROFF])
|
||||
|
||||
(vm:def :bz ; f --
|
||||
[:block
|
||||
[:lda vm.TOP :x]
|
||||
[:bne :skip]
|
||||
[:lda vm.TOPH :x]
|
||||
[:beq :dojmp]
|
||||
:skip
|
||||
(vm:drop)
|
||||
[:lda 2] (add16 vm.IP vm.IPH) (vm:ret)
|
||||
:dojmp (vm:drop)]
|
||||
:jmp
|
||||
; ugh I don't have enough registers for this; a (one-byte?) relative jump would maybe be better
|
||||
[:ldy 0] [:lda [vm.IP] :y] [:sta vm.W]
|
||||
[:iny] [:lda [vm.IP] :y] [:sta vm.IPH]
|
||||
[:lda vm.W] [:sta vm.IP])
|
||||
|
||||
(fn vm.while [self preamble ...]
|
||||
[:block
|
||||
:start
|
||||
[:vm (table.unpack preamble)]
|
||||
[:ref :bz] [:ref :end]
|
||||
[:vm ...]
|
||||
[:ref :jmp] [:ref :start]
|
||||
:end])
|
||||
|
||||
(fn vm.until [self ...]
|
||||
[:block :start [:vm ...] [:ref :bz] [:ref :start]])
|
||||
|
||||
(fn vm.for [self ...]
|
||||
[:vm :>r (vm:while [:rtop] [:vm ...] :r> :dec :>r) :rdrop])
|
||||
|
||||
(vm:def :+ ; a b -- c
|
||||
[:clc]
|
||||
[:lda vm.ST1 :x] [:adc vm.TOP :x] [:sta vm.ST1 :x]
|
||||
[:lda vm.ST1H :x] [:adc vm.TOPH :x] [:sta vm.ST1H :x]
|
||||
(vm:drop))
|
||||
|
||||
(vm:def :- ; a b -- c
|
||||
[:sec]
|
||||
[:lda vm.ST1 :x] [:sbc vm.TOP :x] [:sta vm.ST1 :x]
|
||||
[:lda vm.ST1H :x] [:sbc vm.TOPH :x] [:sta vm.ST1H :x]
|
||||
(vm:drop))
|
||||
|
||||
(vm:def :inc ; a -- a+1
|
||||
(inc16-stk vm.TOP vm.TOPH))
|
||||
|
||||
(vm:def :dec ; a -- a-1
|
||||
[:block
|
||||
[:lda vm.TOP :x]
|
||||
[:bne :declow]
|
||||
[:dec vm.TOPH :x]
|
||||
:declow
|
||||
[:dec vm.TOP :x]])
|
||||
|
||||
(vm:def :not ; f - !f
|
||||
[:block
|
||||
[:lda vm.TOP :x]
|
||||
[:bne :zero]
|
||||
[:lda vm.TOPH :x]
|
||||
[:bne :zero]
|
||||
[:lda 0xff] [:sta vm.TOP :x] [:sta vm.TOPH :x] (vm:ret)
|
||||
:zero
|
||||
[:lda 0] [:sta vm.TOP :x] [:sta vm.TOPH :x]])
|
||||
|
||||
(vm:def := ; a b -- f
|
||||
[:block
|
||||
[:lda vm.ST1 :x]
|
||||
[:cmp vm.TOP :x]
|
||||
[:bne :noteq]
|
||||
[:lda vm.ST1H :x]
|
||||
[:cmp vm.TOP :x]
|
||||
[:bne :noteq]
|
||||
[:lda 0xff] (vm:drop) [:sta vm.TOP :x] [:sta vm.TOPH :x] (vm:ret)
|
||||
:noteq
|
||||
[:lda 0] (vm:drop) [:sta vm.TOP :x] [:sta vm.TOPH :x]])
|
||||
|
||||
(vm:def :.
|
||||
[:lda vm.TOPH :x]
|
||||
[:jsr mon.hexout]
|
||||
[:lda vm.TOP :x]
|
||||
[:jsr mon.hexout]
|
||||
[:lda (achar " ")]
|
||||
[:jsr mon.putchar]
|
||||
(vm:drop))
|
||||
|
||||
(vm:def :stacklen
|
||||
(vm:reserve)
|
||||
[:txa] [:lsr :a] [:sta vm.TOP :x]
|
||||
[:lda 0] [:sta vm.TOPH :x])
|
||||
|
||||
(vm:word :.s
|
||||
:stacklen (prg:parse-addr vm.TOP) :swap
|
||||
(vm:for :dup :get :. :inc :inc) :drop)
|
||||
|
||||
; starting address:
|
||||
; 0x2000 + (x*2) + (y%4 * 0x100) + ((y/4) * 0x28)
|
||||
; x between 0-19
|
||||
; y between 0-12
|
||||
; yx - 16-bit value, low byte x, high byte y
|
||||
(code1:append :screeny-lookup [:bytes "\0\040\080"])
|
||||
(vm:def :tile>screen ; yx -- p
|
||||
[:lda vm.TOPH :x] ; a=y
|
||||
[:lsr :a] [:lsr :a] ; a=y/4
|
||||
[:tay] ; y=y/4
|
||||
[:lda 0x03]
|
||||
[:and vm.TOPH :x] ; a=y%4
|
||||
[:ora 0x20] ; a=0x20 + y%4
|
||||
[:sta vm.TOPH :x] ; high byte is set (and y is wiped)
|
||||
[:lda vm.TOP :x] ; a=x
|
||||
[:asl :a] ; a = x*2
|
||||
[:clc]
|
||||
[:adc :screeny-lookup :y] ; a=x*2 + (y/4)*0x28
|
||||
[:sta vm.TOP :x] ; low byte is set
|
||||
)
|
||||
|
||||
; note: the graphical tile data must not cross a page boundary!
|
||||
; TODO: add support to the assembler for enforcing that
|
||||
(fn draw-block []
|
||||
[:block
|
||||
[:clc]
|
||||
[:ldy 8]
|
||||
:loop
|
||||
[:lda [vm.TOP :x]]
|
||||
[:sta [vm.ST1 :x]]
|
||||
[:inc vm.TOP :x]
|
||||
[:lda vm.ST1H :x]
|
||||
[:adc 4]
|
||||
[:sta vm.ST1H :x]
|
||||
[:dey]
|
||||
[:bne :loop]])
|
||||
|
||||
(fn draw-vertical-block []
|
||||
[:block
|
||||
(draw-block)
|
||||
[:lda vm.ST1H :x]
|
||||
[:sbc 31] ; with carry clear this is 32
|
||||
[:sta vm.ST1H :x]
|
||||
[:lda vm.ST1 :x]
|
||||
[:ora 0x80]
|
||||
[:sta vm.ST1 :x]
|
||||
(draw-block)])
|
||||
|
||||
(vm:def :drawtile ; p gfx --
|
||||
(draw-vertical-block)
|
||||
[:lda vm.ST1H :x]
|
||||
[:sbc 31]
|
||||
[:sta vm.ST1H :x]
|
||||
[:lda vm.ST1 :x]
|
||||
[:sbc 0x7f]
|
||||
[:sta vm.ST1 :x]
|
||||
(draw-vertical-block)
|
||||
(vm:drop) (vm:drop))
|
||||
|
||||
(vm:def :cleargfx
|
||||
(vm:push 0x4000)
|
||||
[:block :page
|
||||
[:dec vm.TOPH :x]
|
||||
[:lda 0]
|
||||
[:block :start
|
||||
[:sta [vm.TOP :x]]
|
||||
[:inc vm.TOP :x]
|
||||
[:bne :start]]
|
||||
[:lda vm.TOPH :x]
|
||||
[:cmp 0x20]
|
||||
[:bne :page]]
|
||||
(vm:drop))
|
||||
|
||||
(vm:word :drawmaprow ; pscreen pmap -- pmap
|
||||
20 (vm:for
|
||||
:2dup :bget :lookup-tile :drawtile
|
||||
:inc :swap :inc :inc :swap) :swap :drop)
|
||||
|
||||
(vm:word :drawmap
|
||||
:lit :map 0x0c00 (vm:until 0x100 :-
|
||||
:dup :tile>screen ; pmap yx pscreen
|
||||
:<rot :drawmaprow :swap ; pmap yx
|
||||
:dup :not) :drop :drop)
|
||||
|
||||
(vm:def :lookup-tile ; itile -- ptile
|
||||
; each tile is 32 bytes; 2^5
|
||||
; we save some cycles by storing the indices as lllhhhhh, so we don't need to shift them'
|
||||
[:lda vm.TOP :x] [:tay]
|
||||
[:and 0x1f]
|
||||
[:clc] [:adc #(hi tiles.org)]
|
||||
[:sta vm.TOPH :x]
|
||||
[:tya] [:and 0xe0]
|
||||
[:sta vm.TOP :x])
|
||||
|
||||
(tiles:append :blanktile [:bytes "\0\0\0\0\0\0\0\0\0\255\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0 \0\0\0\0\0\0"])
|
||||
(tiles:append :testtile [:bytes "12345678901234567890123456789012"])
|
||||
(tiles:append [:bytes "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"])
|
||||
;; 19x11 means full map is 209 bytes
|
||||
(: (prg:org 0x6800) :append :map [:bytes (string.rep "\0\032\064" 85)])
|
||||
(code1:append :main
|
||||
[:jsr :reset]
|
||||
[:jsr :interpret]
|
||||
[:vm :mixed-hires
|
||||
:cleargfx :drawmap
|
||||
:quit])
|
||||
|
||||
(prg:assemble)
|
||||
|
||||
prg
|
||||
41
util.fnl
41
util.fnl
|
|
@ -1,9 +1,40 @@
|
|||
(fn table.clone [tbl]
|
||||
(let [newtbl {}]
|
||||
(each [k v (pairs tbl)]
|
||||
(tset newtbl k v))
|
||||
newtbl))
|
||||
(local lume (require "lume"))
|
||||
|
||||
(fn string.fromhex [str]
|
||||
(str:gsub ".." (fn [cc] (string.char (tonumber cc 16)))))
|
||||
(fn string.tohex [str]
|
||||
(str:gsub "." (fn [c] (string.format "%02X" (string.byte c)))))
|
||||
|
||||
(fn lo [v] (bit.band v 0xff))
|
||||
(fn hi [v] (bit.band (bit.rshift v 8) 0xff))
|
||||
(fn int8-to-bytes [i]
|
||||
(string.char (lo i)))
|
||||
(fn int16-to-bytes [i]
|
||||
(string.char (lo i) (hi i)))
|
||||
|
||||
(fn reload [modname]
|
||||
(tset package.loaded modname nil)
|
||||
(require modname))
|
||||
|
||||
; lume.hotswap really assumes your module is a table
|
||||
(fn hotswap [modname]
|
||||
(if (= (type (. package.loaded modname)) :table)
|
||||
(lume.hotswap modname)
|
||||
(reload modname)))
|
||||
|
||||
(fn mk-swappable-fn [table k]
|
||||
(fn [...] ((. table k) ...)))
|
||||
|
||||
(fn swappable [table]
|
||||
(local s {})
|
||||
(each [k v (pairs table)]
|
||||
(if (= (type v) :function)
|
||||
(tset s k (mk-swappable-fn table k))
|
||||
(tset s k v)))
|
||||
s)
|
||||
|
||||
(fn swappable-require [modname]
|
||||
(swappable (require modname)))
|
||||
|
||||
{: lo : hi : int8-to-bytes : int16-to-bytes : reload : hotswap : swappable :require swappable-require}
|
||||
|
||||
|
|
|
|||
337
vm.fnl
Normal file
337
vm.fnl
Normal file
|
|
@ -0,0 +1,337 @@
|
|||
(local lume (require "lume"))
|
||||
(local {: lo : hi} (require "util"))
|
||||
|
||||
(fn inc16-stk [l h]
|
||||
[:block
|
||||
[:inc l :x]
|
||||
[:bne :done]
|
||||
[:inc h :x]
|
||||
:done])
|
||||
|
||||
(fn inc16 [l h]
|
||||
[:block
|
||||
[:inc l]
|
||||
[:bne :done]
|
||||
[:inc h]
|
||||
:done
|
||||
])
|
||||
|
||||
(fn dec16 [l h]
|
||||
[:block
|
||||
[:lda l]
|
||||
[:bne :declow]
|
||||
[:dec h]
|
||||
:declow
|
||||
[:dec l]])
|
||||
|
||||
(fn add16 [l h]
|
||||
[:block
|
||||
[:clc]
|
||||
[:adc l]
|
||||
[:sta l]
|
||||
[:bcc :go]
|
||||
[:inc h]
|
||||
:go
|
||||
])
|
||||
|
||||
(fn mk-vm [prg options]
|
||||
(local code1 (prg:org 0xc00))
|
||||
|
||||
(fn prg.dat-parser.vm [bytecodes]
|
||||
(local block (prg:new-block))
|
||||
(each [_ bytecode (ipairs (lume.slice bytecodes 2))]
|
||||
(if
|
||||
(= (type bytecode) :number)
|
||||
(prg:parse-dats block [[:ref :lit] [:dw bytecode]])
|
||||
|
||||
(= (type bytecode) :string)
|
||||
(prg:parse-dats block [[:ref bytecode]])
|
||||
|
||||
(= (type bytecode) :table)
|
||||
(prg:parse-dats block [bytecode])
|
||||
|
||||
(error (.. "VM can't parse " (fv bytecode)))))
|
||||
block)
|
||||
(local vm {
|
||||
:IP :0x60
|
||||
:IPH :0x61
|
||||
:W :0x62
|
||||
:WH :0x63
|
||||
:ROFF :0x64
|
||||
:TOP :0x80
|
||||
:TOPH :0x81
|
||||
:ST1 :0x7e
|
||||
:ST1H :0x7f
|
||||
:ST2 :0x7c
|
||||
:ST2H :0x7d
|
||||
:RSTACK :0x6000
|
||||
:code code1
|
||||
:ret (fn [self] [:jmp :next])
|
||||
:reserve (fn [self] [:block [:inx] [:inx]])
|
||||
:push
|
||||
(fn [self v]
|
||||
(local l (bit.band v 0xff))
|
||||
(local h (bit.band (bit.rshift v 8) 0xff))
|
||||
[:block (self:reserve)
|
||||
[:lda l]
|
||||
[:sta self.TOP :x]
|
||||
[:lda h]
|
||||
[:sta self.TOPH :x]
|
||||
])
|
||||
:drop (fn [self] [:block [:dex] [:dex]])
|
||||
:def
|
||||
(fn [self name ...]
|
||||
(code1:append name [:flatten ...] (self:ret)))
|
||||
:word
|
||||
(fn [self name ...]
|
||||
(code1:append name [:jsr :subroutine] [:vm ...] [:vm :ret]))
|
||||
:inline
|
||||
(fn [self ...]
|
||||
[:block [:jsr :subroutine] [:vm ...] [:vm :restore]])
|
||||
:asm
|
||||
(fn [self ...]
|
||||
[:block [:vm :native] [:block ...] [:jsr :interpret]])
|
||||
})
|
||||
|
||||
(code1:append :next
|
||||
[:ldy 0]
|
||||
[:lda [vm.IP] :y] [:sta vm.W]
|
||||
(inc16 vm.IP vm.IPH)
|
||||
[:lda [vm.IP] :y] [:sta vm.WH]
|
||||
(inc16 vm.IP vm.IPH)
|
||||
|
||||
; [:lda vm.WH]
|
||||
; [:jsr mon.hexout]
|
||||
; [:lda vm.W]
|
||||
; [:jsr mon.hexout]
|
||||
; [:lda (achar " ")]
|
||||
; [:jsr mon.putchar]
|
||||
|
||||
[:jmp [vm.W]])
|
||||
|
||||
(code1:append :reset
|
||||
[:lda #(lo ($1:lookup-addr :quit))]
|
||||
[:sta vm.IP]
|
||||
[:lda #(hi ($1:lookup-addr :quit))]
|
||||
[:sta vm.IPH]
|
||||
[:lda 0]
|
||||
[:sta vm.ROFF]
|
||||
[:ldx 0xfe]
|
||||
[:rts])
|
||||
|
||||
(vm:def
|
||||
:subroutine ; usage: [jsr :subroutine] followed by bytecode
|
||||
[:ldy vm.ROFF]
|
||||
[:lda vm.IP] [:sta vm.RSTACK :y] [:iny]
|
||||
[:lda vm.IPH] [:sta vm.RSTACK :y] [:iny]
|
||||
[:sty vm.ROFF]
|
||||
:interpret ; usage: [jsr :interpret] followed by bytecode
|
||||
[:pla] [:sta vm.IP] [:pla] [:sta vm.IPH]
|
||||
(inc16 vm.IP vm.IPH))
|
||||
|
||||
(vm:def :ret
|
||||
[:ldy vm.ROFF]
|
||||
[:dey] [:lda vm.RSTACK :y] [:sta vm.IPH]
|
||||
[:dey] [:lda vm.RSTACK :y] [:sta vm.IP]
|
||||
[:sty vm.ROFF])
|
||||
|
||||
(code1:append :native [:jmp [vm.IP]])
|
||||
(code1:append :quit [:rts])
|
||||
(code1:append :restore
|
||||
[:lda vm.IP] [:sta vm.W]
|
||||
[:lda vm.IPH] [:sta vm.WH]
|
||||
[:ldy vm.ROFF]
|
||||
[:dey] [:lda vm.RSTACK :y] [:sta vm.IPH]
|
||||
[:dey] [:lda vm.RSTACK :y] [:sta vm.IP]
|
||||
[:sty vm.ROFF]
|
||||
[:jmp [vm.W]])
|
||||
|
||||
|
||||
(vm:def :drop (vm:drop))
|
||||
|
||||
(vm:def :dup
|
||||
(vm:reserve)
|
||||
[:lda vm.ST1H :x]
|
||||
[:sta vm.TOPH :x]
|
||||
[:lda vm.ST1 :x]
|
||||
[:sta vm.TOP :x])
|
||||
|
||||
(vm:def :swap
|
||||
[:lda vm.TOP :x]
|
||||
[:ldy vm.ST1 :x]
|
||||
[:sty vm.TOP :x]
|
||||
[:sta vm.ST1 :x]
|
||||
[:lda vm.TOPH :x]
|
||||
[:ldy vm.ST1H :x]
|
||||
[:sty vm.TOPH :x]
|
||||
[:sta vm.ST1H :x])
|
||||
|
||||
(vm:def :over
|
||||
(vm:reserve)
|
||||
[:lda vm.ST2H :x]
|
||||
[:sta vm.TOPH :x]
|
||||
[:lda vm.ST2 :x]
|
||||
[:sta vm.TOP :x])
|
||||
(vm:word :2dup :over :over)
|
||||
|
||||
(vm:def :>rot ; (a b c -- c a b)
|
||||
[:lda vm.TOP :x] ; a: c (a b c)
|
||||
[:ldy vm.ST2 :x] ; y: a (a b c)
|
||||
[:sta vm.ST2 :x] ; a: c (c b c)
|
||||
[:lda vm.ST1 :x] ; a: b (c b c)
|
||||
[:sta vm.TOP :x] ; a: b (c b b)
|
||||
[:sty vm.ST1 :x] ; y: a (c a b)
|
||||
[:lda vm.TOPH :x] ; a: c (a b c)
|
||||
[:ldy vm.ST2H :x] ; y: a (a b c)
|
||||
[:sta vm.ST2H :x] ; a: c (c b c)
|
||||
[:lda vm.ST1H :x] ; a: b (c b c)
|
||||
[:sta vm.TOPH :x] ; a: b (c b b)
|
||||
[:sty vm.ST1H :x] ; y: a (c a b)
|
||||
)
|
||||
(vm:def :<rot ; (a b c -- b c a)
|
||||
[:lda vm.TOP :x] ; a: c (a b c)
|
||||
[:ldy vm.ST1 :x] ; y: b (a b c)
|
||||
[:sta vm.ST1 :x] ; a: c (a c c)
|
||||
[:lda vm.ST2 :x] ; a: a (a c c)
|
||||
[:sta vm.TOP :x] ; a: a (a c a)
|
||||
[:sty vm.ST2 :x] ; y: b (b c a)
|
||||
[:lda vm.TOPH :x] ; a: c (a b c)
|
||||
[:ldy vm.ST1H :x] ; y: b (a b c)
|
||||
[:sta vm.ST1H :x] ; a: c (a c c)
|
||||
[:lda vm.ST2H :x] ; a: a (a c c)
|
||||
[:sta vm.TOPH :x] ; a: a (a c a)
|
||||
[:sty vm.ST2H :x] ; y: b (b c a)
|
||||
)
|
||||
|
||||
(vm:def :get
|
||||
[:lda [vm.TOP :x]]
|
||||
[:tay]
|
||||
(inc16-stk vm.TOP vm.TOPH)
|
||||
[:lda [vm.TOP :x]]
|
||||
[:sta vm.TOPH :x]
|
||||
[:sty vm.TOP :x])
|
||||
|
||||
(vm:def :set ; v p --
|
||||
[:lda vm.ST1 :x]
|
||||
[:sta [vm.TOP :x]]
|
||||
(inc16-stk vm.TOP vm.TOPH)
|
||||
[:lda vm.ST1H :x]
|
||||
[:sta [vm.TOP :x]]
|
||||
(vm:drop) (vm:drop))
|
||||
|
||||
(vm:def :bget ; p -- b
|
||||
[:lda [vm.TOP :x]] [:sta vm.TOP :x]
|
||||
[:lda 0] [:sta vm.TOPH :x])
|
||||
|
||||
(vm:def :bset ; b p --
|
||||
[:lda vm.ST1 :x] [:sta [vm.TOP :x]]
|
||||
(vm:drop) (vm:drop))
|
||||
|
||||
(vm:def :lit
|
||||
(vm:reserve) [:ldy 0]
|
||||
[:lda [vm.IP] :y] [:sta vm.TOP :x]
|
||||
(inc16 vm.IP vm.IPH)
|
||||
[:lda [vm.IP] :y] [:sta vm.TOPH :x]
|
||||
(inc16 vm.IP vm.IPH))
|
||||
|
||||
(vm:def :>r ; v --
|
||||
[:ldy vm.ROFF]
|
||||
[:lda vm.TOP :x] [:sta vm.RSTACK :y] [:iny]
|
||||
[:lda vm.TOPH :x] [:sta vm.RSTACK :y] [:iny]
|
||||
[:sty vm.ROFF]
|
||||
(vm:drop))
|
||||
|
||||
(vm:def :r> ; -- v
|
||||
(vm:reserve)
|
||||
[:ldy vm.ROFF]
|
||||
[:dey] [:lda vm.RSTACK :y] [:sta vm.TOPH :x]
|
||||
[:dey] [:lda vm.RSTACK :y] [:sta vm.TOP :x]
|
||||
[:sty vm.ROFF])
|
||||
|
||||
(vm:def :rtop ; -- v
|
||||
(vm:reserve)
|
||||
[:ldy vm.ROFF]
|
||||
[:dey] [:lda vm.RSTACK :y] [:sta vm.TOPH :x]
|
||||
[:dey] [:lda vm.RSTACK :y] [:sta vm.TOP :x])
|
||||
|
||||
(vm:def :rdrop
|
||||
[:ldy vm.ROFF] [:dey] [:dey] [:sty vm.ROFF])
|
||||
|
||||
(vm:def :bz ; f --
|
||||
[:block
|
||||
[:lda vm.TOP :x]
|
||||
[:bne :skip]
|
||||
[:lda vm.TOPH :x]
|
||||
[:beq :dojmp]
|
||||
:skip
|
||||
(vm:drop)
|
||||
[:lda 2] (add16 vm.IP vm.IPH) (vm:ret)
|
||||
:dojmp (vm:drop)]
|
||||
:jmp
|
||||
; ugh I don't have enough registers for this; a (one-byte?) relative jump would maybe be better
|
||||
[:ldy 0] [:lda [vm.IP] :y] [:sta vm.W]
|
||||
[:iny] [:lda [vm.IP] :y] [:sta vm.IPH]
|
||||
[:lda vm.W] [:sta vm.IP])
|
||||
|
||||
(fn vm.while [self preamble ...]
|
||||
[:block
|
||||
:start
|
||||
[:vm (table.unpack preamble)]
|
||||
[:ref :bz] [:ref :end]
|
||||
[:vm ...]
|
||||
[:ref :jmp] [:ref :start]
|
||||
:end])
|
||||
|
||||
(fn vm.until [self ...]
|
||||
[:block :start [:vm ...] [:ref :bz] [:ref :start]])
|
||||
|
||||
(fn vm.for [self ...]
|
||||
[:vm :>r (vm:while [:rtop] :r> :dec :>r ...) :rdrop])
|
||||
|
||||
(vm:def :+ ; a b -- c
|
||||
[:clc]
|
||||
[:lda vm.ST1 :x] [:adc vm.TOP :x] [:sta vm.ST1 :x]
|
||||
[:lda vm.ST1H :x] [:adc vm.TOPH :x] [:sta vm.ST1H :x]
|
||||
(vm:drop))
|
||||
|
||||
(vm:def :- ; a b -- c
|
||||
[:sec]
|
||||
[:lda vm.ST1 :x] [:sbc vm.TOP :x] [:sta vm.ST1 :x]
|
||||
[:lda vm.ST1H :x] [:sbc vm.TOPH :x] [:sta vm.ST1H :x]
|
||||
(vm:drop))
|
||||
|
||||
(vm:def :inc ; a -- a+1
|
||||
(inc16-stk vm.TOP vm.TOPH))
|
||||
|
||||
(vm:def :dec ; a -- a-1
|
||||
[:block
|
||||
[:lda vm.TOP :x]
|
||||
[:bne :declow]
|
||||
[:dec vm.TOPH :x]
|
||||
:declow
|
||||
[:dec vm.TOP :x]])
|
||||
|
||||
(vm:def :not ; f - !f
|
||||
[:block
|
||||
[:lda vm.TOP :x]
|
||||
[:bne :zero]
|
||||
[:lda vm.TOPH :x]
|
||||
[:bne :zero]
|
||||
[:lda 0xff] [:sta vm.TOP :x] [:sta vm.TOPH :x] (vm:ret)
|
||||
:zero
|
||||
[:lda 0] [:sta vm.TOP :x] [:sta vm.TOPH :x]])
|
||||
|
||||
(vm:def := ; a b -- f
|
||||
[:block
|
||||
[:lda vm.ST1 :x]
|
||||
[:cmp vm.TOP :x]
|
||||
[:bne :noteq]
|
||||
[:lda vm.ST1H :x]
|
||||
[:cmp vm.TOP :x]
|
||||
[:bne :noteq]
|
||||
[:lda 0xff] (vm:drop) [:sta vm.TOP :x] [:sta vm.TOPH :x] (vm:ret)
|
||||
:noteq
|
||||
[:lda 0] (vm:drop) [:sta vm.TOP :x] [:sta vm.TOPH :x]])
|
||||
vm)
|
||||
|
||||
{:new mk-vm}
|
||||
10
wrap.fnl
10
wrap.fnl
|
|
@ -1,5 +1,5 @@
|
|||
(require "lite")
|
||||
(require "util")
|
||||
(local util (require "util"))
|
||||
(local lume (require "lume"))
|
||||
(local imgui (require "imgui"))
|
||||
(local serial (require "serial"))
|
||||
|
|
@ -19,12 +19,12 @@
|
|||
})
|
||||
(command.add #(machine:connected?) {
|
||||
"honeylisp:upload" (fn []
|
||||
(local p (reload "test"))
|
||||
(local p (util.reload "neut"))
|
||||
(p:upload machine)
|
||||
(core.log (string.format "%x" (p:lookup-addr p.start-symbol))))
|
||||
})
|
||||
(command.add (fn [] true) {
|
||||
"honeylisp:rebuild" #(reload "test")
|
||||
"honeylisp:rebuild" #(util.reload "neut")
|
||||
})
|
||||
|
||||
(fn selected-symbol []
|
||||
|
|
@ -52,11 +52,11 @@
|
|||
(: :gsub "^data%." "")
|
||||
(: :gsub "%.init$" "")))
|
||||
(core.log (.. "Hotswapping " modname))
|
||||
(local (mod err) (lume.hotswap modname))
|
||||
(local (mod err) (util.hotswap modname))
|
||||
(when (not= err nil) (print err) (error err)))
|
||||
"honeylisp:address" (fn []
|
||||
(local word (selected-symbol))
|
||||
(local p (require "test"))
|
||||
(local p (require "neut"))
|
||||
(core.log (string.format "%s %x" word (or (p:lookup-addr word) -1)))
|
||||
)
|
||||
})
|
||||
|
|
|
|||
Loading…
Reference in a new issue