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MAME hot reload support!

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This commit is contained in:
Jeremy Penner 2020-11-09 22:58:57 -05:00
parent 763e969d6e
commit 4a2548e214
5 changed files with 90 additions and 20 deletions
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2
link/init.fnl
View file

@ -6,6 +6,6 @@
:types [:serial :gsplus :tape :mame]})
(local serial (require :link.serial))
(link:switch (if (and (pcall #(serial:connect)) (serial:connected?)) :serial :gsplus))
(link:switch (if (and (pcall #(serial:connect)) (serial:connected?)) :serial :mame))
link

92
link/mame.fnl
View file

@ -10,7 +10,8 @@
(local Machine (Session:extend))
(fn Machine.new [self]
(Machine.super.new self {:out (fn []) :value (fn [])}))
(Machine.super.new self {:out (fn []) :value (fn [])})
(set self.breakpoints {}))
(fn Machine.boot [self]
(when (not self.pid)
(set self.pid (start-mame :apple2p))))
@ -31,34 +32,95 @@
#(if (nrepl:connected?) true
(do (pcall #(nrepl:connect)) false))))
(self:init-session))))
(fn Machine.init-session [self]
(Machine.super.init-session self)
(set self.monitor (Session {:out (fn []) :value (fn [])}))
(self.monitor:init-session)
(self.monitor:eval
"(global periodic-jobs {})
(emu.register_periodic (fn []
(local dead-ids [])
(each [id coro (pairs periodic-jobs)]
(coroutine.resume coro)
(when (= (coroutine.status coro) :dead)
(table.insert dead-ids id)))
(each [_ id (ipairs dead-ids)]
(tset periodic-jobs id nil))))
(global run-periodic-job (fn [id f]
(tset periodic-jobs id (coroutine.running))
(f)
(tset periodic-jobs id nil)))")
(self:start-cpu-monitor)
(self:done-msg))
(fn Machine.start-cpu-monitor [self ?last-addr]
(self.monitor:eval-input
"(let [?last-addr (tonumber (io.read))]
(run-periodic-job :cpu-monitor (fn []
(var last-addr ?last-addr)
(while (let [state (-> (manager:machine) (: :debugger) (. :execution_state))
addr (-> (manager:machine) (. :devices ::maincpu :state :PC :value))]
(not (and (= state :stop) (not= addr ?last-addr))))
(when (= :run (-> (manager:machine) (: :debugger) (. :execution_state)))
(set last-addr nil))
(coroutine.yield))))
(-> (manager:machine) (. :devices ::maincpu :state :PC :value)))"
(tostring ?last-addr)
{:value (fn [nrepl output response]
(self:on-cpu-paused (tonumber output))
(self:start-cpu-monitor (tonumber output)))}))
(fn Machine.on-cpu-paused [self addr]
(local action (-?> self.breakpoints (. addr) (. :action)))
(when action (action)))
(fn Machine.disconnect [self]
(self:shutdown-session)
(self.monitor:shutdown-session)
(when (nrepl:connected?) (nrepl:disconnect))
(set self.session nil))
(set self.breakpoints {}))
(fn Machine.write [self addr bytes]
(self:send
{:op :eval
:code
(self:eval-input
"(let [bencode (require :bencode)
{: addr : bytes} (bencode.decode (io.read))
mem (-> (manager:machine) (. :devices ::maincpu :spaces :program))]
(print :writing (bytes:len) :to addr)
(for [i 1 (bytes:len)]
(mem:write_u8 (+ addr i -1) (string.byte (bytes:sub i i)))))"}
{:status/need-input #(self:send-oob {:op :stdin :stdin (bencode.encode {: addr : bytes})})}))
(fn Machine.reboot [self] (self:eval "(: (manager:machine) :hard_reset)"))
(mem:write_u8 (+ addr i -1) (string.byte (bytes:sub i i)))))"
(bencode.encode {: addr : bytes})))
(fn Machine.launch [self prg]
(self:eval (string.format "(emu.keypost \"CALL-151\n%xG\n\")" (prg:lookup-addr prg.start-symbol))))
(fn Machine.reboot [self] (self:eval "(: (manager:machine) :soft_reset)"))
(fn Machine.coro-eval [self code]
(var result nil)
(local append-to-result #(set result (.. (or result "") $2)))
(self:eval code
(self:coro-handlers (coroutine.running) {:out #(set result $2)}))
(self:coro-handlers (coroutine.running) {:value append-to-result :out append-to-result}))
(coroutine.yield)
(or result "<no result?>"))
(fn Machine.dbgcmd [self cmd]
(self:eval (.. "(-> (manager:machine) (: :debugger) (: :command \"" cmd "\"))")))
(or result "<no result>"))
(fn Machine.dbgcmd [self cmd ?handlers]
(self:eval (.. "(-> (manager:machine) (: :debugger) (: :command \"" cmd "\"))")) ?handlers)
(fn Machine.continue [self] (self:dbgcmd :go))
(fn Machine.step [self] (self:dbgcmd :s))
(fn Machine.stop-at [self addr])
(fn Machine.set-bp [self addr ?action]
; todo: handle setting the same breakpoint more than once?
(tset self.breakpoints addr {:action ?action})
(self:eval (.. "(-> (manager:machine) (. :devices ::maincpu) (: :debug) (: :bpset " (tostring addr) "))")
{:value #(tset (. self.breakpoints addr) :id (tonumber $2))}))
(fn Machine.clear-bp [self addr]
(local bpid (-?> self.breakpoints (. addr) (. :id)))
(when bpid (self:dbgcmd (.. "bpclear " bpid)))
(tset self.breakpoints addr nil))
(fn Machine.jump [self addr]
(self:eval (.. "(tset (-> (manager:machine) (. :devices ::maincpu :state :PC)) :value " (tostring addr) ")")))
(fn Machine.stub [self org post-check-jump ...]
(org:append :debug-stub [:jmp post-check-jump] :on-hotswap ...))
(fn Machine.hotswap [self prg-old prg-new]
(local addr (prg-old:lookup-addr :debug-stub))
(self:set-bp addr
(fn [] (self:clear-bp addr)
(prg-new:upload self)
(self:jump (prg-new:lookup-addr :on-hotswap))
(self:continue))))
(Machine:new)
Machine

10
link/nrepl-session.fnl
View file

@ -16,6 +16,11 @@
(self:done-msg))
(self:make-handlers)))))
(fn Session.shutdown-session [self]
(set self.queue [])
(set self.in-progress false)
(set self.sesion nil))
(fn Session.cleanup-handlers [self]
{:status/done #(self:done-msg)
:status/interrupted #(self:done-msg)})
@ -58,4 +63,9 @@
(fn Session.eval [self code ?handlers]
(self:send {:op :eval : code} ?handlers))
(fn Session.eval-input [self code input ?handlers]
(self:send {:op :eval : code}
(lume.merge (or ?handlers {})
{:status/need-input #(self:send-oob {:op :stdin :stdin input})})))
Session

3
link/nrepl.fnl
View file

@ -51,7 +51,6 @@
(local (data err part) (self.connection:receive "*a"))
(local response (or data part))
(when (> (response:len) 0)
(print "Got some data")
(set self.input (.. self.input response)))
(match (self:parse-input) nil nil
input (self:handle input))
@ -78,11 +77,9 @@
(each [prop handler (pairs handlers)]
(local idiv (prop:find :/))
(local key (if idiv (prop:sub 1 (- idiv 1)) prop))
(print "checking" key (and idiv (prop:sub (+ idiv 1))))
(when (and (. response key)
(or (= idiv nil)
(contains? (. response key) (prop:sub (+ idiv 1)))))
(print "handling")
(handler self (. response key) response))))
:disconnect
(fn [self]

1
wrap.fnl
View file

@ -12,6 +12,7 @@
"honeylisp:upload" (fn []
(local p (util.reload "game"))
(p:upload link.machine)
(when link.machine.launch (link.machine:launch p))
(core.log (string.format "%x" (p:lookup-addr p.start-symbol))))
"honeylisp:reload" (fn []
(local p-before (require :game))