4147 lines
148 KiB
JavaScript
4147 lines
148 KiB
JavaScript
/**
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* @fileoverview Implements the PDP-10 Debugger component.
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* @author <a href="mailto:Jeff@pcjs.org">Jeff Parsons</a>
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* @copyright © Jeff Parsons 2012-2017
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*
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* This file is part of PCjs, a computer emulation software project at <http://pcjs.org/>.
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*
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* PCjs is free software: you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation, either version 3
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* of the License, or (at your option) any later version.
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*
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* PCjs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
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* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with PCjs. If not,
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* see <http://www.gnu.org/licenses/gpl.html>.
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*
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* You are required to include the above copyright notice in every modified copy of this work
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* and to display that copyright notice when the software starts running; see COPYRIGHT in
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* <http://pcjs.org/modules/shared/lib/defines.js>.
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*
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* Some PCjs files also attempt to load external resource files, such as character-image files,
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* ROM files, and disk image files. Those external resource files are not considered part of PCjs
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* for purposes of the GNU General Public License, and the author does not claim any copyright
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* as to their contents.
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*/
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"use strict";
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if (NODE) {
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var Str = require("../../shared/lib/strlib");
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var Usr = require("../../shared/lib/usrlib");
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var Web = require("../../shared/lib/weblib");
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var Component = require("../../shared/lib/component");
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var Debugger = require("../../shared/lib/debugger");
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var Keys = require("../../shared/lib/keys");
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var State = require("../../shared/lib/state");
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var PDP10 = require("./defines");
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var BusPDP10 = require("./bus");
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var MemoryPDP10 = require("./memory");
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var MessagesPDP10 = require("./messages");
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var Macro10 = require("./macro10");
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}
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/**
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* DebuggerPDP10 Address Object
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*
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* addr address
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* fPhysical true if this is a physical address
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* fTemporary true if this is a temporary breakpoint address
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* nBase set if the address contained an explicit base (eg, 16, 10, 8, etc)
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* sCmd set for breakpoint addresses if there's an associated command string
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* aCmds preprocessed commands (from sCmd)
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*
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* @typedef {{
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* addr:(number|null),
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* fPhysical:(boolean),
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* fTemporary:(boolean),
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* nBase:(number|undefined),
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* sCmd:(string|undefined),
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* aCmds:(Array.<string>|undefined)
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* }}
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*/
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var DbgAddrPDP10;
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class DebuggerPDP10 extends Debugger {
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/**
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* DebuggerPDP10(parmsDbg)
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*
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* The DebuggerPDP10 component supports the following optional (parmsDbg) properties:
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*
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* commands: string containing zero or more commands, separated by ';'
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*
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* messages: string containing zero or more message categories to enable;
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* multiple categories must be separated by '|' or ';'. Parsed by messageInit().
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*
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* The DebuggerPDP10 component is an optional component that implements a variety of user
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* commands for controlling the CPU, dumping and editing memory, etc.
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*
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* @this {DebuggerPDP10}
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* @param {Object} parmsDbg
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*/
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constructor(parmsDbg)
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{
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if (DEBUGGER) {
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super(parmsDbg);
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/*
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* Since this Debugger doesn't use replaceRegs(), we can use parentheses instead of braces.
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*/
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this.fInit = false;
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this.nBusWidth = 18; // default value, updated by initBus()
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this.nBits = 36; // default integer precision
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this.achGroup = ['<','>'];
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this.achAddress = [];
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/*
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* Most commands that require an address call parseAddr(), and if a dbgAddr parameter is supplied
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* as as well (eg, dbgAddrCode, dbgAddrData), then that address will be used as the default.
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*
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* For TEMPORARY breakpoint addresses, we set fTemporary to true, so that they can be automatically
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* cleared when they're hit.
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*/
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this.dbgAddrAcc = this.newAddr();
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this.dbgAddrCode = this.newAddr(0);
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this.dbgAddrData = this.newAddr(0);
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this.dbgAddrAssemble = this.newAddr(0);
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/*
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* aSymbolTable is an array of SymbolTable objects, one per ROM or other chunk of address space,
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* where each object contains the following properties:
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*
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* sModule
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* addr (physical address, if any; eg, symbols for a ROM)
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* len
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* aSymbols
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* aOffsets
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*
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* See addSymbols() for more details, since that's how callers add sets of symbols to the table.
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*/
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this.aSymbolTable = [];
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/*
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* clearBreakpoints() initializes the breakpoints lists: aBreakExec is a list of addresses
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* to halt on whenever attempting to execute an instruction at the corresponding address,
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* and aBreakRead and aBreakWrite are lists of addresses to halt on whenever a read or write,
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* respectively, occurs at the corresponding address.
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*
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* NOTE: Curiously, after upgrading the Google Closure Compiler from v20141215 to v20150609,
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* the resulting compiled code would crash in clearBreakpoints(), because the (renamed) aBreakRead
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* property was already defined. To eliminate whatever was confusing the Closure Compiler, I've
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* explicitly initialized all the properties that clearBreakpoints() (re)initializes.
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*/
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this.aBreakExec = this.aBreakRead = this.aBreakWrite = [];
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this.clearBreakpoints();
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/*
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* The new "bn" command allows you to specify a number of instructions to execute and then stop;
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* "bn 0" disables any outstanding count.
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*/
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this.nBreakInstructions = 0;
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/*
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* Execution history is allocated by historyInit() whenever checksEnabled() conditions change.
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* Execution history is updated whenever the CPU calls checkInstruction(), which will happen
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* only when checksEnabled() returns true (eg, whenever one or more breakpoints have been set).
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* This ensures that, by default, the CPU runs as fast as possible.
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*/
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this.iInstructionHistory = 0;
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this.aInstructionHistory = [];
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this.nextHistory = undefined;
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this.historyInit();
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/*
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* Initialize DebuggerPDP10 message support.
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*/
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this.dbg = this;
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this.afnDumpers = {};
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this.bitsMessage = this.bitsWarning = 0;
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this.sMessagePrev = null;
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this.aMessageBuffer = [];
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this.messageInit(parmsDbg['messages']);
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this.sInitCommands = parmsDbg['commands'];
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/*
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* Define remaining miscellaneous DebuggerPDP10 properties.
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*/
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this.aOpReserved = [];
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this.nStep = 0;
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this.sCmdTracePrev = null;
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this.sCmdDumpPrev = null;
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this.fIgnoreNextCheckFault = false; // TODO: Does this serve any purpose on a PDP-11?
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this.nSuppressBreaks = 0;
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this.cInstructions = this.cInstructionsStart = 0;
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this.nCycles = this.nCyclesStart = this.msStart = 0;
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this.controlDebug = null;
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this.panel = null;
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/**
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* This records any active Macro10 assembler object.
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*
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* @type {Macro10|null}
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*/
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this.macro10 = null;
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/*
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* Make it easier to access DebuggerPDP10 commands from an external REPL (eg, the WebStorm
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* "live" console window); eg:
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*
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* pdp10('r')
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* pdp10('dw 0:0')
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* pdp10('h')
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* ...
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*/
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var dbg = this;
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if (window) {
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if (window[PDP10.APPCLASS] === undefined) {
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window[PDP10.APPCLASS] = function(s) { return dbg.doCommands(s); };
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}
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} else {
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if (global[PDP10.APPCLASS] === undefined) {
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global[PDP10.APPCLASS] = function(s) { return dbg.doCommands(s); };
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}
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}
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} // endif DEBUGGER
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}
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/**
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* getAddr(dbgAddr, fWrite)
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*
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* @this {DebuggerPDP10}
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* @param {DbgAddrPDP10|null} [dbgAddr]
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* @param {boolean} [fWrite]
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* @return {number} is the corresponding linear address, or PDP10.ADDR_INVALID
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*/
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getAddr(dbgAddr, fWrite)
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{
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var addr = dbgAddr && dbgAddr.addr;
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if (addr == null) addr = PDP10.ADDR_INVALID;
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return addr;
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}
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/**
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* newAddr(addr, fPhysical, nBase)
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*
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* Returns a NEW DbgAddrPDP10 object, initialized with specified values and/or defaults.
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*
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* @this {DebuggerPDP10}
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* @param {number|null} [addr]
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* @param {boolean} [fPhysical]
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* @param {number} [nBase]
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* @return {DbgAddrPDP10}
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*/
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newAddr(addr = null, fPhysical = false, nBase)
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{
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return {addr: addr, fPhysical: fPhysical, fTemporary: false, nBase: nBase};
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}
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/**
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* copyAddr(dbgAddr, dbgCopy)
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*
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* Updates an EXISTING DbgAddrPDP10 object, initialized with specified values and/or defaults.
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*
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* @this {DebuggerPDP10}
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* @param {DbgAddrPDP10} dbgAddr
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* @param {DbgAddrPDP10} dbgCopy
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* @return {DbgAddrPDP10}
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*/
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copyAddr(dbgAddr, dbgCopy)
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{
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dbgAddr.addr = dbgCopy.addr;
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dbgAddr.fPhysical = dbgCopy.fPhysical;
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dbgAddr.fTemporary = dbgCopy.fTemporary;
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dbgAddr.nBase = dbgCopy.nBase;
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return dbgAddr;
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}
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/**
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* setAddr(dbgAddr, addr, fPhysical, nBase)
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*
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* Updates an EXISTING DbgAddrPDP10 object, initialized with specified values and/or defaults.
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*
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* @this {DebuggerPDP10}
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* @param {DbgAddrPDP10} dbgAddr
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* @param {number} addr
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* @param {boolean} [fPhysical]
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* @param {number} [nBase]
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* @return {DbgAddrPDP10}
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*/
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setAddr(dbgAddr, addr, fPhysical, nBase)
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{
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dbgAddr.addr = addr;
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dbgAddr.fPhysical = fPhysical || false;
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dbgAddr.fTemporary = false;
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dbgAddr.nBase = nBase;
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return dbgAddr;
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}
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/**
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* packAddr(dbgAddr)
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*
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* Packs a DbgAddrPDP10 object into an Array suitable for saving in a machine state object.
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*
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* @this {DebuggerPDP10}
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* @param {DbgAddrPDP10} dbgAddr
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* @return {Array}
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*/
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packAddr(dbgAddr)
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{
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return [dbgAddr.addr, dbgAddr.fPhysical, dbgAddr.fTemporary, dbgAddr.nBase, dbgAddr.sCmd];
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}
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/**
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* unpackAddr(aAddr)
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*
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* Unpacks a DbgAddrPDP10 object from an Array created by packAddr() and restored from a saved machine state.
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*
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* @this {DebuggerPDP10}
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* @param {Array} aAddr
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* @return {DbgAddrPDP10}
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*/
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unpackAddr(aAddr)
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{
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var dbgAddr = this.newAddr(aAddr[0], aAddr[1], aAddr[2]);
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dbgAddr.fTemporary = aAddr[3];
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if (aAddr[4]) {
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dbgAddr.aCmds = this.parseCommand(dbgAddr.sCmd = aAddr[4]);
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}
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return dbgAddr;
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}
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/**
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* initBus(bus, cpu, dbg)
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*
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* @this {DebuggerPDP10}
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* @param {ComputerPDP10} cmp
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* @param {BusPDP10} bus
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* @param {CPUStatePDP10} cpu
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* @param {DebuggerPDP10} dbg
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*/
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initBus(cmp, bus, cpu, dbg)
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{
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this.bus = bus;
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this.cmp = cmp;
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this.cpu = cpu;
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this.panel = cmp.panel;
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this.nBusWidth = bus.getWidth();
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/*
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* Re-initialize Debugger message support if necessary
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*/
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var sMessages = /** @type {string|undefined} */ (cmp.getMachineParm('messages'));
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if (sMessages) this.messageInit(sMessages);
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/*
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* Update aOpReserved as appropriate for the current model
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*/
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this.messageDump(MessagesPDP10.BUS, function onDumpBus(asArgs) { dbg.dumpBus(asArgs); });
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this.setReady();
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}
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/**
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* setBinding(sType, sBinding, control, sValue)
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*
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* @this {DebuggerPDP10}
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* @param {string|null} sType is the type of the HTML control (eg, "button", "textarea", "register", "flag", "rled", etc)
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* @param {string} sBinding is the value of the 'binding' parameter stored in the HTML control's "data-value" attribute (eg, "debugInput")
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* @param {Object} control is the HTML control DOM object (eg, HTMLButtonElement)
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* @param {string} [sValue] optional data value
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* @return {boolean} true if binding was successful, false if unrecognized binding request
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*/
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setBinding(sType, sBinding, control, sValue)
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{
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var dbg = this;
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switch (sBinding) {
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case "debugInput":
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this.bindings[sBinding] = control;
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this.controlDebug = control;
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/*
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* For halted machines, this is fine, but for auto-start machines, it can be annoying.
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*
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* control.focus();
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*/
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control.onkeydown = function onKeyDownDebugInput(event) {
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var sCmd;
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if (event.keyCode == Keys.KEYCODE.CR) {
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sCmd = control.value;
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control.value = "";
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dbg.doCommands(sCmd, true);
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}
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else if (event.keyCode == Keys.KEYCODE.ESC) {
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control.value = sCmd = "";
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}
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else {
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if (event.keyCode == Keys.KEYCODE.UP) {
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sCmd = dbg.getPrevCommand();
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}
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else if (event.keyCode == Keys.KEYCODE.DOWN) {
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sCmd = dbg.getNextCommand();
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}
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if (sCmd != null) {
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var cch = sCmd.length;
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control.value = sCmd;
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control.setSelectionRange(cch, cch);
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}
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}
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if (sCmd != null && event.preventDefault) event.preventDefault();
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};
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return true;
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case "debugEnter":
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this.bindings[sBinding] = control;
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Web.onClickRepeat(
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control,
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500, 100,
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function onClickDebugEnter(fRepeat) {
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if (dbg.controlDebug) {
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var sCmd = dbg.controlDebug.value;
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dbg.controlDebug.value = "";
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dbg.doCommands(sCmd, true);
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return true;
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}
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if (DEBUG) dbg.log("no debugger input buffer");
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return false;
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}
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);
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return true;
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case "step":
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this.bindings[sBinding] = control;
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Web.onClickRepeat(
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control,
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500, 100,
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function onClickStep(fRepeat) {
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var fCompleted = false;
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if (!dbg.isBusy(true)) {
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dbg.setBusy(true);
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fCompleted = dbg.stepCPU(fRepeat? 1 : 0, null);
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dbg.setBusy(false);
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}
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return fCompleted;
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}
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);
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return true;
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default:
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break;
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}
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return false;
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}
|
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|
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/**
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* setFocus(fScroll)
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*
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* @this {DebuggerPDP10}
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* @param {boolean} [fScroll] (true if you really want the control scrolled into view)
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*/
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setFocus(fScroll)
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{
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if (this.controlDebug) {
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/*
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* This is the recommended work-around to prevent the browser from scrolling the focused element
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* into view. The CPU is not a visual component, so when the CPU wants to set focus, the primary intent
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* is to ensure that keyboard input is fielded properly.
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*/
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var x = 0, y = 0;
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if (!fScroll && window) {
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x = window.scrollX;
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y = window.scrollY;
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}
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this.controlDebug.focus();
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if (!fScroll && window) {
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window.scrollTo(x, y);
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}
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}
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}
|
|
|
|
/**
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* getWord(dbgAddr, inc)
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*
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* @this {DebuggerPDP10}
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* @param {DbgAddrPDP10} dbgAddr
|
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* @param {number} [inc]
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* @return {number}
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*/
|
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getWord(dbgAddr, inc)
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{
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var w = PDP10.WORD_INVALID;
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var addr = this.getAddr(dbgAddr, false);
|
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if (addr !== PDP10.ADDR_INVALID) {
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w = this.bus.getWordDirect(addr);
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if (inc) this.incAddr(dbgAddr, inc);
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}
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return w;
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}
|
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|
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/**
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* setWord(dbgAddr, w, inc)
|
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*
|
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* @this {DebuggerPDP10}
|
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* @param {DbgAddrPDP10} dbgAddr
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* @param {number} w
|
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* @param {number} [inc]
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*/
|
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setWord(dbgAddr, w, inc)
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{
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var addr = this.getAddr(dbgAddr, true);
|
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if (addr !== PDP10.ADDR_INVALID) {
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this.bus.setWordDirect(addr, w);
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if (inc) this.incAddr(dbgAddr, inc);
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this.cmp.updateDisplays(-1);
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}
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}
|
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|
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/**
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* parseAddr(sAddr, dbgAddr, fPrint)
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*
|
|
* Address evaluation and validation (eg, range checks) are no longer performed at this stage. That's
|
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* done later, by getAddr(), which returns PDP10.ADDR_INVALID for invalid segments, out-of-range offsets,
|
|
* etc. The Debugger's low-level get/set memory functions verify all getAddr() results, but even if an
|
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* invalid address is passed through to the Bus memory interfaces, the address will simply be masked with
|
|
* bus.nBusMask; in the case of PDP10.ADDR_INVALID, that will generally refer to the top of the physical
|
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* address space.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string|undefined} sAddr
|
|
* @param {DbgAddrPDP10} [dbgAddr]
|
|
* @param {boolean} [fPrint]
|
|
* @return {DbgAddrPDP10|null|undefined}
|
|
*/
|
|
parseAddr(sAddr, dbgAddr, fPrint)
|
|
{
|
|
var fPhysical, nBase;
|
|
if (!dbgAddr) dbgAddr = this.newAddr();
|
|
var addr = dbgAddr.addr;
|
|
if (sAddr !== undefined) {
|
|
sAddr = this.parseReference(sAddr);
|
|
var ch = sAddr.charAt(0);
|
|
if (ch == '%') {
|
|
fPhysical = true;
|
|
sAddr = sAddr.substr(1);
|
|
}
|
|
var dbgAddrTmp = this.findSymbolAddr(sAddr);
|
|
if (dbgAddrTmp) return dbgAddrTmp;
|
|
if (sAddr.indexOf("0x") >= 0) {
|
|
nBase = 16
|
|
} else if (sAddr.indexOf("0o") >= 0) {
|
|
nBase = 8;
|
|
} else if (sAddr.indexOf('.') >= 0) {
|
|
nBase = 10;
|
|
}
|
|
addr = this.parseExpression(sAddr, fPrint);
|
|
}
|
|
if (addr != null) {
|
|
addr = this.validateWord(addr, this.nBusWidth);
|
|
this.setAddr(dbgAddr, addr, fPhysical, nBase);
|
|
}
|
|
return dbgAddr;
|
|
}
|
|
|
|
/**
|
|
* parseAddrOptions(dbdAddr, sOptions)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {DbgAddrPDP10} dbgAddr
|
|
* @param {string} [sOptions]
|
|
*/
|
|
parseAddrOptions(dbgAddr, sOptions)
|
|
{
|
|
if (sOptions) {
|
|
var a = sOptions.match(/(['"])(.*?)\1/);
|
|
if (a) {
|
|
dbgAddr.aCmds = this.parseCommand(dbgAddr.sCmd = a[2]);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* validateWord(w, bits)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} w
|
|
* @param {number} [bits]
|
|
* @return {number}
|
|
*/
|
|
validateWord(w, bits = 36)
|
|
{
|
|
/*
|
|
* Although it's expected that most callers will supply unsigned 36-bit values, we're nice about
|
|
* converting any signed values to their unsigned (two's complement) counterpart, provided they are
|
|
* within the acceptable range. Any values outside that range will be dealt with afterward.
|
|
*/
|
|
if (w < 0 && w >= -PDP10.INT_LIMIT) {
|
|
w += PDP10.WORD_LIMIT;
|
|
}
|
|
var value = Math.trunc(Math.abs(w)) % Math.pow(2, bits);
|
|
if (DEBUG && w !== value) {
|
|
this.println("validateWord(" + Str.toOct(w) + "): out of range, truncated to " + Str.toOct(value));
|
|
}
|
|
return value;
|
|
}
|
|
|
|
/**
|
|
* incAddr(dbgAddr, inc)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {DbgAddrPDP10} dbgAddr
|
|
* @param {number} [inc] contains value to increment dbgAddr by (default is 1)
|
|
*/
|
|
incAddr(dbgAddr, inc)
|
|
{
|
|
if (dbgAddr.addr != null) {
|
|
dbgAddr.addr += (inc || 1);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* toStrOffset(off)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number|null|undefined} [off]
|
|
* @return {string} default base representation of off
|
|
*/
|
|
toStrOffset(off)
|
|
{
|
|
return this.toStrBase(off);
|
|
}
|
|
|
|
/**
|
|
* toStrAddr(dbgAddr)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {DbgAddrPDP10} dbgAddr
|
|
* @return {string} default base representation of the address
|
|
*/
|
|
toStrAddr(dbgAddr)
|
|
{
|
|
return this.toStrOffset(dbgAddr.addr);
|
|
}
|
|
|
|
/**
|
|
* toStrWord(w)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} w (up to, but not including, WORD_LIMIT)
|
|
* @return {string} octal representation of the 36-bit word, as two 18-bit values
|
|
*/
|
|
toStrWord(w)
|
|
{
|
|
/*
|
|
* ADDR_LIMIT is not derived from WORD_LIMIT; we're just taking advantage of the fact
|
|
* that ADDR_LIMIT happens to be exactly half of WORD_LIMIT, and they are both powers of two.
|
|
*/
|
|
return Str.toOct(w / PDP10.ADDR_LIMIT, 6) + ' ' + Str.toOct(w % PDP10.ADDR_LIMIT, 6);
|
|
}
|
|
|
|
/**
|
|
* dumpBlocks(aBlocks, sAddr)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {Array} aBlocks
|
|
* @param {string} [sAddr] (optional block address)
|
|
*/
|
|
dumpBlocks(aBlocks, sAddr)
|
|
{
|
|
var addr = 0, i = 0, n = aBlocks.length;
|
|
|
|
if (sAddr) {
|
|
addr = this.getAddr(this.parseAddr(sAddr, this.dbgAddrData));
|
|
if (addr === PDP10.ADDR_INVALID) {
|
|
this.println("invalid address: " + sAddr);
|
|
return;
|
|
}
|
|
i = addr >>> this.bus.nBlockShift;
|
|
n = 1;
|
|
}
|
|
|
|
this.println("blockid physical blockaddr used size type");
|
|
this.println("-------- --------- --------- ------ ------ ----");
|
|
|
|
var typePrev = -1, cPrev = 0;
|
|
while (n--) {
|
|
var block = aBlocks[i];
|
|
if (block.type == typePrev) {
|
|
if (!cPrev++) this.println("...");
|
|
} else {
|
|
typePrev = block.type;
|
|
var sType = MemoryPDP10.TYPE_NAMES[typePrev];
|
|
if (block) {
|
|
this.println(Str.toHex(block.id, 8) + " %" + Str.toHex(i << this.bus.nBlockShift, 8) + " %" + Str.toHex(block.addr, 8) + " " + Str.toHexWord(block.used) + " " + Str.toHexWord(block.size) + " " + sType);
|
|
}
|
|
if (typePrev != MemoryPDP10.TYPE.NONE) typePrev = -1;
|
|
cPrev = 0;
|
|
}
|
|
addr += this.bus.nBlockSize;
|
|
i++;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* dumpBus(asArgs)
|
|
*
|
|
* Dumps Bus allocations.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {Array.<string>} asArgs (asArgs[0] is an optional block address)
|
|
*/
|
|
dumpBus(asArgs)
|
|
{
|
|
this.dumpBlocks(this.bus.aBusBlocks, asArgs[0]);
|
|
}
|
|
|
|
/**
|
|
* dumpHistory(sPrev, sLines)
|
|
*
|
|
* If sLines is not a number, it can be a instruction filter. However, for the moment, the only
|
|
* supported filter is "call", which filters the history buffer for all CALL and RET instructions
|
|
* from the specified previous point forward.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} [sPrev] is a (decimal) number of instructions to rewind to (default is 10)
|
|
* @param {string} [sLines] is a (decimal) number of instructions to print (default is, again, 10)
|
|
*/
|
|
dumpHistory(sPrev, sLines)
|
|
{
|
|
var sMore = "";
|
|
var cHistory = 0;
|
|
var iHistory = this.iInstructionHistory;
|
|
var aHistory = this.aInstructionHistory;
|
|
|
|
if (aHistory.length) {
|
|
var nPrev = +sPrev || this.nextHistory;
|
|
var nLines = +sLines || 10;
|
|
|
|
if (isNaN(nPrev)) {
|
|
nPrev = nLines;
|
|
} else {
|
|
sMore = "more ";
|
|
}
|
|
|
|
if (nPrev > aHistory.length) {
|
|
this.println("note: only " + aHistory.length + " available");
|
|
nPrev = aHistory.length;
|
|
}
|
|
|
|
iHistory -= nPrev;
|
|
if (iHistory < 0) {
|
|
/*
|
|
* If the dbgAddr of the last aHistory element contains a valid selector, wrap around.
|
|
*/
|
|
if (aHistory[aHistory.length - 1].addr == null) {
|
|
nPrev = iHistory + nPrev;
|
|
iHistory = 0;
|
|
} else {
|
|
iHistory += aHistory.length;
|
|
}
|
|
}
|
|
|
|
var aFilters = [];
|
|
if (sLines == "call") {
|
|
nLines = 100000;
|
|
aFilters = ["CALL"];
|
|
}
|
|
|
|
if (sPrev !== undefined) {
|
|
this.println(nPrev + " instructions earlier:");
|
|
}
|
|
|
|
/*
|
|
* TODO: The following is necessary to prevent dumpHistory() from causing additional (or worse, recursive)
|
|
* faults due to segmented addresses that are no longer valid, but the only alternative is to dramatically
|
|
* increase the amount of memory used to store instruction history (eg, storing copies of all the instruction
|
|
* bytes alongside the execution addresses).
|
|
*
|
|
* For now, we're living dangerously, so that our history dumps actually work.
|
|
*
|
|
* this.nSuppressBreaks++;
|
|
*
|
|
* If you re-enable this protection, be sure to re-enable the decrement below, too.
|
|
*/
|
|
while (nLines > 0 && iHistory != this.iInstructionHistory) {
|
|
|
|
var dbgAddr = aHistory[iHistory++];
|
|
if (dbgAddr.addr == null) break;
|
|
|
|
/*
|
|
* We must create a new dbgAddr from the address in aHistory, because dbgAddr was
|
|
* a reference, not a copy, and we don't want getInstruction() modifying the original.
|
|
*/
|
|
var dbgAddrNew = this.newAddr(dbgAddr.addr);
|
|
|
|
var sComment = "history";
|
|
var nSequence = nPrev--;
|
|
|
|
/*
|
|
* TODO: Need to some UI to control whether cycle counts are displayed as part of the history.
|
|
* It's currently disabled in checkInstruction(), so it's disable here, too.
|
|
*
|
|
if (DEBUG && dbgAddr.cycleCount != null) {
|
|
sComment = "cycles";
|
|
nSequence = dbgAddr.cycleCount;
|
|
}
|
|
*/
|
|
|
|
var sInstruction = this.getInstruction(dbgAddrNew, sComment, nSequence);
|
|
|
|
if (!aFilters.length || sInstruction.indexOf(aFilters[0]) >= 0) {
|
|
this.println(sInstruction);
|
|
}
|
|
|
|
/*
|
|
* If there were OPERAND or ADDRESS overrides on the previous instruction, getInstruction()
|
|
* will have automatically disassembled additional bytes, so skip additional history entries.
|
|
*/
|
|
if (dbgAddrNew.cOverrides) {
|
|
iHistory += dbgAddrNew.cOverrides; nLines -= dbgAddrNew.cOverrides; nPrev -= dbgAddrNew.cOverrides;
|
|
}
|
|
|
|
if (iHistory >= aHistory.length) iHistory = 0;
|
|
this.nextHistory = nPrev;
|
|
cHistory++;
|
|
nLines--;
|
|
}
|
|
/*
|
|
* See comments above.
|
|
*
|
|
* this.nSuppressBreaks--;
|
|
*/
|
|
}
|
|
|
|
if (!cHistory) {
|
|
this.println("no " + sMore + "history available");
|
|
this.nextHistory = undefined;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* messageInit(sEnable)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string|undefined} sEnable contains zero or more message categories to enable, separated by '|'
|
|
*/
|
|
messageInit(sEnable)
|
|
{
|
|
this.dbg = this;
|
|
this.bitsMessage = this.bitsWarning = MessagesPDP10.FAULT | MessagesPDP10.WARN;
|
|
this.sMessagePrev = null;
|
|
this.aMessageBuffer = [];
|
|
/*
|
|
* Internally, we use "key" instead of "keys", since the latter is a method on JavasScript objects,
|
|
* but externally, we allow the user to specify "keys"; "kbd" is also allowed as shorthand for "keyboard".
|
|
*/
|
|
var aEnable = this.parseCommand(sEnable.replace("keys","key").replace("kbd","keyboard"), false, '|');
|
|
if (aEnable.length) {
|
|
for (var m in MessagesPDP10.CATEGORIES) {
|
|
if (Usr.indexOf(aEnable, m) >= 0) {
|
|
this.bitsMessage |= MessagesPDP10.CATEGORIES[m];
|
|
this.println(m + " messages enabled");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* messageDump(bitMessage, fnDumper)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} bitMessage is one Messages category flag
|
|
* @param {function(Array.<string>)} fnDumper is a function the Debugger can use to dump data for that category
|
|
* @return {boolean} true if successfully registered, false if not
|
|
*/
|
|
messageDump(bitMessage, fnDumper)
|
|
{
|
|
for (var m in MessagesPDP10.CATEGORIES) {
|
|
if (bitMessage == MessagesPDP10.CATEGORIES[m]) {
|
|
this.afnDumpers[m] = fnDumper;
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* getRegIndex(sReg, off)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} sReg
|
|
* @param {number} [off] optional offset into sReg
|
|
* @return {number} register index, or -1 if not found
|
|
*/
|
|
getRegIndex(sReg, off)
|
|
{
|
|
return DebuggerPDP10.REGNAMES.indexOf(sReg.toUpperCase());
|
|
}
|
|
|
|
/**
|
|
* getRegName(iReg)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} iReg (0-7; not used for other registers)
|
|
* @return {string}
|
|
*/
|
|
getRegName(iReg)
|
|
{
|
|
return DebuggerPDP10.REGNAMES[iReg] || "";
|
|
}
|
|
|
|
/**
|
|
* getRegValue(iReg)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} iReg
|
|
* @return {number|undefined}
|
|
*/
|
|
getRegValue(iReg)
|
|
{
|
|
var value;
|
|
var cpu = this.cpu;
|
|
switch(iReg) {
|
|
case DebuggerPDP10.REGS.PC:
|
|
value = cpu.getPC();
|
|
break;
|
|
case DebuggerPDP10.REGS.RA:
|
|
value = cpu.regRA;
|
|
break;
|
|
case DebuggerPDP10.REGS.EA:
|
|
value = cpu.regEA;
|
|
break;
|
|
case DebuggerPDP10.REGS.C0:
|
|
value = (cpu.regPS & PDP10.PSFLAG.CARRY0)? 1 : 0;
|
|
break;
|
|
case DebuggerPDP10.REGS.C1:
|
|
value = (cpu.regPS & PDP10.PSFLAG.CARRY1)? 1 : 0;
|
|
break;
|
|
case DebuggerPDP10.REGS.OV:
|
|
value = (cpu.regPS & PDP10.PSFLAG.OVFL)? 1 : 0;
|
|
break;
|
|
case DebuggerPDP10.REGS.ND:
|
|
value = (cpu.regPS & PDP10.PSFLAG.NO_DIVIDE)? 1 : 0;
|
|
break;
|
|
case DebuggerPDP10.REGS.PD:
|
|
value = (cpu.regPS & PDP10.PSFLAG.PD_OVFL)? 1 : 0;
|
|
break;
|
|
}
|
|
return value;
|
|
}
|
|
|
|
/**
|
|
* setRegValue(iReg, value)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} iReg
|
|
* @param {number} value
|
|
*/
|
|
setRegValue(iReg, value)
|
|
{
|
|
var flag = 0;
|
|
var cpu = this.cpu;
|
|
|
|
switch(iReg) {
|
|
case DebuggerPDP10.REGS.PC:
|
|
cpu.setPC(value);
|
|
this.setAddr(this.dbgAddrCode, cpu.getPC());
|
|
break;
|
|
case DebuggerPDP10.REGS.C0:
|
|
flag = PDP10.PSFLAG.CARRY0;
|
|
break;
|
|
case DebuggerPDP10.REGS.C1:
|
|
flag = PDP10.PSFLAG.CARRY1;
|
|
break;
|
|
case DebuggerPDP10.REGS.OV:
|
|
flag = PDP10.PSFLAG.OVFL;
|
|
break;
|
|
case DebuggerPDP10.REGS.ND:
|
|
flag = PDP10.PSFLAG.NO_DIVIDE;
|
|
break;
|
|
case DebuggerPDP10.REGS.PD:
|
|
flag = PDP10.PSFLAG.PD_OVFL;
|
|
break;
|
|
}
|
|
if (flag) {
|
|
if (value) {
|
|
cpu.regPS |= flag;
|
|
} else {
|
|
cpu.regPS &= ~flag;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* replaceRegs(s)
|
|
*
|
|
* TODO: Implement or eliminate.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} s
|
|
* @return {string}
|
|
*/
|
|
replaceRegs(s)
|
|
{
|
|
return s;
|
|
}
|
|
|
|
/**
|
|
* message(sMessage, fAddress)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} sMessage is any caller-defined message string
|
|
* @param {boolean} [fAddress] is true to display the current address
|
|
*/
|
|
message(sMessage, fAddress)
|
|
{
|
|
if (fAddress) {
|
|
sMessage += " @" + this.toStrAddr(this.newAddr(this.cpu.getLastPC()));
|
|
}
|
|
|
|
if (this.sMessagePrev && sMessage == this.sMessagePrev) return;
|
|
this.sMessagePrev = sMessage;
|
|
|
|
if (this.bitsMessage & MessagesPDP10.BUFFER) {
|
|
this.aMessageBuffer.push(sMessage);
|
|
return;
|
|
}
|
|
|
|
var fRunning;
|
|
if ((this.bitsMessage & MessagesPDP10.HALT) && this.cpu && (fRunning = this.cpu.isRunning()) || this.isBusy(true)) {
|
|
this.stopCPU();
|
|
if (fRunning) sMessage += " (cpu halted)";
|
|
}
|
|
|
|
this.println(sMessage); // + " (" + this.cpu.getCycles() + " cycles)"
|
|
|
|
/*
|
|
* We have no idea what the frequency of println() calls might be; all we know is that they easily
|
|
* screw up the CPU's careful assumptions about cycles per burst. So we call yieldCPU() after every
|
|
* message, to effectively end the current burst and start fresh.
|
|
*
|
|
* TODO: See CPUPDP10.calcStartTime() for a discussion of why we might want to call yieldCPU() *before*
|
|
* we display the message.
|
|
*/
|
|
if (this.cpu) this.cpu.yieldCPU();
|
|
}
|
|
|
|
/**
|
|
* init()
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {boolean} [fAutoStart]
|
|
*/
|
|
init(fAutoStart)
|
|
{
|
|
this.fInit = true;
|
|
this.println("Type ? for help with PDPjs Debugger commands");
|
|
this.updateStatus();
|
|
if (!fAutoStart) this.setFocus();
|
|
if (this.sInitCommands) {
|
|
var sCmds = this.sInitCommands;
|
|
this.sInitCommands = null;
|
|
this.doCommands(sCmds);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* historyInit(fQuiet)
|
|
*
|
|
* This function is intended to be called by the constructor, reset(), addBreakpoint(), findBreakpoint()
|
|
* and any other function that changes the checksEnabled() criteria used to decide whether checkInstruction()
|
|
* should be called.
|
|
*
|
|
* That is, if the history arrays need to be allocated and haven't already been allocated, then allocate them,
|
|
* and if the arrays are no longer needed, then deallocate them.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {boolean} [fQuiet]
|
|
*/
|
|
historyInit(fQuiet)
|
|
{
|
|
var i;
|
|
if (!this.checksEnabled()) {
|
|
if (this.aInstructionHistory && this.aInstructionHistory.length && !fQuiet) {
|
|
this.println("instruction history buffer freed");
|
|
}
|
|
this.iInstructionHistory = 0;
|
|
this.aInstructionHistory = [];
|
|
return;
|
|
}
|
|
if (!this.aInstructionHistory || !this.aInstructionHistory.length) {
|
|
this.aInstructionHistory = new Array(DebuggerPDP10.HISTORY_LIMIT);
|
|
for (i = 0; i < this.aInstructionHistory.length; i++) {
|
|
/*
|
|
* Preallocate dummy Addr (Array) objects in every history slot, so that
|
|
* checkInstruction() doesn't need to call newAddr() on every slot update.
|
|
*/
|
|
this.aInstructionHistory[i] = this.newAddr();
|
|
}
|
|
this.iInstructionHistory = 0;
|
|
if (!fQuiet) {
|
|
this.println("instruction history buffer allocated");
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* startCPU(fUpdateFocus, fQuiet)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {boolean} [fUpdateFocus] is true to update focus
|
|
* @param {boolean} [fQuiet]
|
|
* @return {boolean} true if run request successful, false if not
|
|
*/
|
|
startCPU(fUpdateFocus, fQuiet)
|
|
{
|
|
if (!this.checkCPU(fQuiet)) return false;
|
|
this.cpu.startCPU(fUpdateFocus);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* stepCPU(nCycles, fRegs, fUpdateDisplays)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} nCycles (0 for one instruction without checking breakpoints)
|
|
* @param {boolean|null} [fRegs] is true to display registers after step (default is false; use null for previous setting)
|
|
* @param {boolean} [fUpdateDisplays] is false to disable Computer display updates (default is true)
|
|
* @return {boolean}
|
|
*/
|
|
stepCPU(nCycles, fRegs, fUpdateDisplays)
|
|
{
|
|
if (!this.checkCPU()) return false;
|
|
|
|
var sCmd = "";
|
|
if (fRegs === null) {
|
|
fRegs = (!this.sCmdTracePrev || this.sCmdTracePrev == "tr");
|
|
sCmd = fRegs? "tr" : "t";
|
|
}
|
|
|
|
this.nCycles = 0;
|
|
|
|
if (!nCycles) {
|
|
/*
|
|
* When single-stepping, the CPU won't call checkInstruction(), which is good for
|
|
* avoiding breakpoints, but bad for instruction data collection if checks are enabled.
|
|
* So we call checkInstruction() ourselves.
|
|
*/
|
|
if (this.checksEnabled()) this.checkInstruction(this.cpu.getPC(), 0);
|
|
}
|
|
/*
|
|
* For our typically tiny bursts (usually single instructions), mimic what runCPU() does.
|
|
*/
|
|
try {
|
|
nCycles = this.cpu.getBurstCycles(nCycles);
|
|
var nCyclesStep = this.cpu.stepCPU(nCycles);
|
|
if (nCyclesStep > 0) {
|
|
this.cpu.updateTimers(nCyclesStep);
|
|
this.nCycles += nCyclesStep;
|
|
this.cpu.addCycles(nCyclesStep, true);
|
|
this.cpu.updateChecksum(nCyclesStep);
|
|
this.cInstructions++;
|
|
}
|
|
}
|
|
catch(exception) {
|
|
/*
|
|
* We assume that any numeric exception was explicitly thrown by the CPU to interrupt the
|
|
* current instruction. For all other exceptions, we attempt a stack dump.
|
|
*/
|
|
if (typeof exception != "number") {
|
|
var e = exception;
|
|
this.nCycles = 0;
|
|
this.cpu.setError(e.stack || e.message);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Because we called cpu.stepCPU() and not cpu.startCPU(), we must nudge the Computer's update code,
|
|
* and then update our own state. Normally, the only time fUpdateDisplays will be false is when doTrace()
|
|
* is calling us in a loop, in which case it will perform its own updateDisplays() when it's done.
|
|
*/
|
|
if (fUpdateDisplays !== false) {
|
|
if (this.panel) this.panel.stop();
|
|
this.cmp.updateDisplays(-1);
|
|
}
|
|
|
|
this.updateStatus(fRegs || false, sCmd);
|
|
return (this.nCycles > 0);
|
|
}
|
|
|
|
/**
|
|
* stopCPU()
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {boolean} [fComplete]
|
|
*/
|
|
stopCPU(fComplete)
|
|
{
|
|
if (this.cpu) this.cpu.stopCPU(fComplete);
|
|
}
|
|
|
|
/**
|
|
* updateStatus(fRegs, sCmd)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {boolean} [fRegs] (default is true)
|
|
* @param {string} [sCmd]
|
|
*/
|
|
updateStatus(fRegs = true, sCmd)
|
|
{
|
|
if (!this.fInit) return;
|
|
|
|
if (sCmd) {
|
|
this.println(DebuggerPDP10.PROMPT + sCmd);
|
|
}
|
|
|
|
this.setAddr(this.dbgAddrCode, this.cpu.getPC());
|
|
|
|
/*
|
|
* this.nStep used to be a simple boolean, but now it's 0 (or undefined)
|
|
* if inactive, 1 if stepping over an instruction without a register dump, or 2
|
|
* if stepping over an instruction with a register dump.
|
|
*/
|
|
if (!fRegs || this.nStep == 1) {
|
|
this.doUnassemble();
|
|
} else {
|
|
this.doRegisters();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* checkCPU(fQuiet)
|
|
*
|
|
* Make sure the CPU is ready (finished initializing), powered, not already running, and not in an error state.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {boolean} [fQuiet]
|
|
* @return {boolean}
|
|
*/
|
|
checkCPU(fQuiet)
|
|
{
|
|
if (!this.cpu || !this.cpu.isReady() || !this.cpu.isPowered() || this.cpu.isRunning()) {
|
|
if (!fQuiet) this.println("cpu busy or unavailable, command ignored");
|
|
return false;
|
|
}
|
|
return !this.cpu.isError();
|
|
}
|
|
|
|
/**
|
|
* powerUp(data, fRepower)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {Object|null} data
|
|
* @param {boolean} [fRepower]
|
|
* @return {boolean} true if successful, false if failure
|
|
*/
|
|
powerUp(data, fRepower)
|
|
{
|
|
if (!fRepower) {
|
|
/*
|
|
* Because Debugger save/restore support is somewhat limited (and didn't always exist),
|
|
* we deviate from the typical save/restore design pattern: instead of reset OR restore,
|
|
* we always reset and then perform a (potentially limited) restore.
|
|
*/
|
|
this.reset(true);
|
|
|
|
// this.println(data? "resuming" : "powering up");
|
|
|
|
if (data) {
|
|
return this.restore(data);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* powerDown(fSave, fShutdown)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {boolean} [fSave]
|
|
* @param {boolean} [fShutdown]
|
|
* @return {Object|boolean}
|
|
*/
|
|
powerDown(fSave, fShutdown)
|
|
{
|
|
if (fShutdown) this.println(fSave? "suspending" : "shutting down");
|
|
return fSave? this.save() : true;
|
|
}
|
|
|
|
/**
|
|
* reset(fQuiet)
|
|
*
|
|
* This is a notification handler, called by the Computer, to inform us of a reset.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {boolean} fQuiet (true only when called from our own powerUp handler)
|
|
*/
|
|
reset(fQuiet)
|
|
{
|
|
this.historyInit();
|
|
this.cInstructions = this.cInstructionsStart = 0;
|
|
this.sMessagePrev = null;
|
|
this.nCycles = 0;
|
|
this.setAddr(this.dbgAddrCode, this.cpu.getPC());
|
|
/*
|
|
* fRunning is set by start() and cleared by stop(). In addition, we clear
|
|
* it here, so that if the CPU is reset while running, we can prevent stop()
|
|
* from unnecessarily dumping the CPU state.
|
|
*/
|
|
this.flags.running = false;
|
|
this.clearTempBreakpoint();
|
|
if (!fQuiet) this.updateStatus();
|
|
}
|
|
|
|
/**
|
|
* save()
|
|
*
|
|
* This implements (very rudimentary) save support for the Debugger component.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @return {Object}
|
|
*/
|
|
save()
|
|
{
|
|
var state = new State(this);
|
|
state.set(0, this.packAddr(this.dbgAddrCode));
|
|
state.set(1, this.packAddr(this.dbgAddrData));
|
|
state.set(2, this.packAddr(this.dbgAddrAssemble));
|
|
state.set(3, [this.aPrevCmds, this.fAssemble, this.bitsMessage]);
|
|
state.set(4, this.aSymbolTable);
|
|
return state.data();
|
|
}
|
|
|
|
/**
|
|
* restore(data)
|
|
*
|
|
* This implements (very rudimentary) restore support for the Debugger component.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {Object} data
|
|
* @return {boolean} true if successful, false if failure
|
|
*/
|
|
restore(data)
|
|
{
|
|
var i = 0;
|
|
if (data[3] !== undefined) {
|
|
this.dbgAddrCode = this.unpackAddr(data[i++]);
|
|
this.dbgAddrData = this.unpackAddr(data[i++]);
|
|
this.dbgAddrAssemble = this.unpackAddr(data[i++]);
|
|
this.aPrevCmds = data[i][0];
|
|
if (typeof this.aPrevCmds == "string") this.aPrevCmds = [this.aPrevCmds];
|
|
this.fAssemble = data[i][1];
|
|
this.bitsMessage |= data[i][2]; // keep our current message bits set, and simply "add" any extra bits defined by the saved state
|
|
}
|
|
if (data[4]) this.aSymbolTable = data[4];
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* start(ms, nCycles)
|
|
*
|
|
* This is a notification handler, called by the Computer, to inform us the CPU has started.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} ms
|
|
* @param {number} nCycles
|
|
*/
|
|
start(ms, nCycles)
|
|
{
|
|
if (!this.nStep) this.println("running");
|
|
this.flags.running = true;
|
|
this.msStart = ms;
|
|
this.nCyclesStart = nCycles;
|
|
}
|
|
|
|
/**
|
|
* stop(ms, nCycles)
|
|
*
|
|
* This is a notification handler, called by the Computer, to inform us the CPU has now stopped.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} ms
|
|
* @param {number} nCycles
|
|
*/
|
|
stop(ms, nCycles)
|
|
{
|
|
if (this.flags.running) {
|
|
this.flags.running = false;
|
|
this.nCycles = nCycles - this.nCyclesStart;
|
|
if (!this.nStep) {
|
|
var sStopped = "stopped";
|
|
if (this.nCycles) {
|
|
var msTotal = ms - this.msStart;
|
|
var nCyclesPerSecond = (msTotal > 0? Math.round(this.nCycles * 1000 / msTotal) : 0);
|
|
sStopped += " (";
|
|
if (this.checksEnabled()) {
|
|
sStopped += this.cInstructions + " instructions, ";
|
|
/*
|
|
* $ops displays progress by calculating cInstructions - cInstructionsStart, so before
|
|
* zeroing cInstructions, we should subtract cInstructions from cInstructionsStart (since
|
|
* we're effectively subtracting cInstructions from cInstructions as well).
|
|
*/
|
|
this.cInstructionsStart -= this.cInstructions;
|
|
this.cInstructions = 0;
|
|
}
|
|
sStopped += this.nCycles + " cycles, " + msTotal + " ms, " + nCyclesPerSecond + " hz)";
|
|
} else {
|
|
if (this.messageEnabled(MessagesPDP10.HALT)) {
|
|
/*
|
|
* It's possible the user is trying to 'g' past a fault that was blocked by helpCheckFault()
|
|
* for the Debugger's benefit; if so, it will continue to be blocked, so try displaying a helpful
|
|
* message (another helpful tip would be to simply turn off the "halt" message category).
|
|
*/
|
|
sStopped += " (use the 't' command to execute blocked faults)";
|
|
}
|
|
}
|
|
this.println(sStopped);
|
|
}
|
|
this.updateStatus(true);
|
|
this.setFocus();
|
|
this.clearTempBreakpoint(this.cpu.getPC());
|
|
this.sMessagePrev = null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* checksEnabled(fRelease)
|
|
*
|
|
* This "check" function is called by the CPU; we indicate whether or not every instruction needs to be checked.
|
|
*
|
|
* Originally, this returned true even when there were only read and/or write breakpoints, but those breakpoints
|
|
* no longer require the intervention of checkInstruction(); the Bus component automatically swaps in/out appropriate
|
|
* "checked" Memory access functions to deal with those breakpoints in the corresponding Memory blocks. So I've
|
|
* simplified the test below.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {boolean} [fRelease] is true for release criteria only; default is false (any criteria)
|
|
* @return {boolean} true if every instruction needs to pass through checkInstruction(), false if not
|
|
*/
|
|
checksEnabled(fRelease)
|
|
{
|
|
return ((DEBUG && !fRelease)? true : (this.aBreakExec.length > 1 || !!this.nBreakInstructions));
|
|
}
|
|
|
|
/**
|
|
* checkInstruction(addr, nState)
|
|
*
|
|
* This "check" function is called by the CPU to inform us about the next instruction to be executed,
|
|
* giving us an opportunity to look for "exec" breakpoints and update opcode instruction history.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} addr
|
|
* @param {number} nState is < 0 if stepping, 0 if starting, or > 0 if running
|
|
* @return {boolean} true if breakpoint hit, false if not
|
|
*/
|
|
checkInstruction(addr, nState)
|
|
{
|
|
var opCode = -1;
|
|
var cpu = this.cpu;
|
|
|
|
/*
|
|
* If opHalt() calls our stopInstruction() function, it will effectively rewind the PC back to the HALT,
|
|
* purely for our debugging benefit, so we must compensate for that here by advancing the PC past the HALT
|
|
* when the machine starts up again.
|
|
*/
|
|
if (!nState) {
|
|
opCode = this.cpu.readWord(addr);
|
|
if ((opCode >> PDP10.OPCODE.A_SHIFT) == PDP10.OPCODE.HALT && this.cpu.getLastPC() == addr) {
|
|
addr = this.cpu.advancePC(1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If the CPU stopped on a breakpoint, we're not interested in stopping again if the machine is starting.
|
|
*/
|
|
if (nState > 0) {
|
|
if (this.nBreakInstructions) {
|
|
if (!--this.nBreakInstructions) return true;
|
|
}
|
|
if (this.checkBreakpoint(addr, 1, this.aBreakExec)) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* The rest of the instruction tracking logic can only be performed if historyInit() has allocated the
|
|
* necessary data structures. Note that there is no explicit UI for enabling/disabling history, other than
|
|
* adding/removing breakpoints, simply because it's breakpoints that trigger the call to checkInstruction();
|
|
* well, OK, and a few other things now, like enabling MessagesPDP10.INT messages.
|
|
*/
|
|
if (nState >= 0 && this.aInstructionHistory.length) {
|
|
this.cInstructions++;
|
|
if (opCode < 0) {
|
|
opCode = this.cpu.readWord(addr);
|
|
}
|
|
if (opCode >= 0) {
|
|
var dbgAddr = this.aInstructionHistory[this.iInstructionHistory];
|
|
this.setAddr(dbgAddr, addr);
|
|
// if (DEBUG) dbgAddr.cycleCount = cpu.getCycles();
|
|
if (++this.iInstructionHistory == this.aInstructionHistory.length) this.iInstructionHistory = 0;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* findInstruction(opCode, fOperands)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} opCode
|
|
* @param {boolean} [fOperands] (optional; default is true)
|
|
* @return {string}
|
|
*/
|
|
findInstruction(opCode, fOperands = true)
|
|
{
|
|
var opNum, opMask, aModes, iMode = 0;
|
|
var op = (opCode / PDP10.OPCODE.OP_SCALE)|0;
|
|
|
|
for (var mask in DebuggerPDP10.OPTABLE) {
|
|
var opMasks = DebuggerPDP10.OPTABLE[mask];
|
|
opNum = opMasks[op & mask];
|
|
if (opNum) {
|
|
opMask = +mask;
|
|
/*
|
|
* When we extracted op from opCode using OP_SCALE, we included 6 additional bits
|
|
* to help distinguish OPIO instructions from non-OPIO instructions. But for the
|
|
* following tests, we don't need those bits, so we get rid of them now.
|
|
*/
|
|
op >>= 6;
|
|
switch(opMask) {
|
|
case PDP10.OPCODE.OPMODE:
|
|
aModes = DebuggerPDP10.OPMODES;
|
|
iMode = (op & 3);
|
|
break;
|
|
case PDP10.OPCODE.OPCOMP:
|
|
aModes = DebuggerPDP10.OPCOMPS;
|
|
iMode = (op & 7);
|
|
break;
|
|
case PDP10.OPCODE.OPTEST:
|
|
aModes = DebuggerPDP10.OPTESTS;
|
|
iMode = ((op & 0o60) >> 2) | ((op & 0o6) >> 1);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
var sMode = aModes && aModes[iMode] || "";
|
|
if (sMode == "S" && opNum > DebuggerPDP10.OPS.MOVM) sMode = "B";
|
|
var sOperation = DebuggerPDP10.OPNAMES[opNum || 0] + sMode;
|
|
|
|
if (!fOperands) {
|
|
if (!opNum) sOperation = "";
|
|
} else {
|
|
if (!opNum) {
|
|
sOperation = Str.pad(sOperation, 8) + this.toStrWord(opCode);
|
|
} else {
|
|
var n, sOperand;
|
|
if (opMask == PDP10.OPCODE.OPIO) {
|
|
n = (opCode / PDP10.OPCODE.IO_SCALE) & PDP10.OPCODE.IO_MASK;
|
|
sOperand = this.toStrBase(n, -1);
|
|
} else {
|
|
n = (opCode >> PDP10.OPCODE.A_SHIFT) & PDP10.OPCODE.A_MASK;
|
|
sOperand = this.toStrBase(n, -1);
|
|
if (n) {
|
|
for (var m = 0; m < DebuggerPDP10.ALTOPS.length; m++) {
|
|
if (opNum == DebuggerPDP10.ALTOPS[m][0]) {
|
|
var opAlt = DebuggerPDP10.ALTOPS[m][n];
|
|
if (opAlt) {
|
|
sOperation = DebuggerPDP10.OPNAMES[opAlt];
|
|
sOperand = "";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
sOperation = Str.pad(sOperation, 8) + (sOperand? sOperand + ',' : "");
|
|
if (opCode & PDP10.OPCODE.I_BIT) sOperation += '@';
|
|
sOperation += this.toStrBase(opCode & PDP10.OPCODE.Y_MASK, -1);
|
|
var i = (opCode >> PDP10.OPCODE.X_SHIFT) & PDP10.OPCODE.X_MASK;
|
|
if (i) sOperation += '(' + this.toStrBase(i, -1) + ')';
|
|
}
|
|
}
|
|
return sOperation;
|
|
}
|
|
|
|
/**
|
|
* getInstruction(dbgAddr, sComment, nSequence)
|
|
*
|
|
* Get the next instruction, by decoding the opcode and any operands.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {DbgAddrPDP10} dbgAddr
|
|
* @param {string} [sComment] is an associated comment
|
|
* @param {number|null} [nSequence] is an associated sequence number, undefined if none
|
|
* @return {string} (and dbgAddr is updated to the next instruction)
|
|
*/
|
|
getInstruction(dbgAddr, sComment, nSequence)
|
|
{
|
|
var dbgAddrOp = this.newAddr(dbgAddr.addr);
|
|
var opCode = this.getWord(dbgAddr, 1);
|
|
var sOperation = this.findInstruction(opCode);
|
|
|
|
var sOpcodes = "";
|
|
var sLine = this.toStrAddr(dbgAddrOp) + ":";
|
|
if (dbgAddrOp.addr !== PDP10.ADDR_INVALID && dbgAddr.addr !== PDP10.ADDR_INVALID) {
|
|
do {
|
|
var w = this.getWord(dbgAddrOp, 1);
|
|
sOpcodes += ' ' + this.toStrWord(w);
|
|
if (dbgAddrOp.addr == null) break;
|
|
} while (dbgAddrOp.addr != dbgAddr.addr);
|
|
}
|
|
|
|
sLine += Str.pad(sOpcodes, 16) + sOperation;
|
|
|
|
if (sComment) {
|
|
sLine = Str.pad(sLine, 48) + ';' + (sComment || "");
|
|
if (!this.cpu.flags.checksum) {
|
|
sLine += (nSequence != null? '=' + nSequence.toString() : "");
|
|
} else {
|
|
var nCycles = this.cpu.getCycles();
|
|
sLine += "cycles=" + nCycles.toString() + " cs=" + Str.toHex(this.cpu.nChecksum);
|
|
}
|
|
}
|
|
return sLine;
|
|
}
|
|
|
|
/**
|
|
* parseInstruction(sOpcode, sOperands, addr)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} sOpcode
|
|
* @param {string} [sOperands]
|
|
* @param {number} [addr] of memory where this instruction is being assembled
|
|
* @return {number} (opcode, or -1 if unrecognized instruction)
|
|
*/
|
|
parseInstruction(sOpcode, sOperands, addr)
|
|
{
|
|
var opCode = -1, opMask, opNum;
|
|
var sMnemonic = sOpcode.toUpperCase();
|
|
|
|
/*
|
|
* Perform any alternate mnemonic substitutions first
|
|
*/
|
|
for (var m = 0; m < DebuggerPDP10.ALTOPS.length; m++) {
|
|
for (var n in DebuggerPDP10.ALTOPS[m]) {
|
|
if (!+n) continue;
|
|
opNum = DebuggerPDP10.ALTOPS[m][n];
|
|
if (sMnemonic == DebuggerPDP10.OPNAMES[opNum]) {
|
|
sMnemonic = DebuggerPDP10.OPNAMES[DebuggerPDP10.ALTOPS[m][0]];
|
|
if (sOperands) sOperands = this.toStrBase(+n) + ',' + sOperands;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (var mask in DebuggerPDP10.OPTABLE) {
|
|
|
|
var aModes;
|
|
opMask = +mask;
|
|
var opMasks = DebuggerPDP10.OPTABLE[mask];
|
|
|
|
switch(opMask) {
|
|
case PDP10.OPCODE.OPMODE:
|
|
aModes = DebuggerPDP10.OPMODES;
|
|
break;
|
|
case PDP10.OPCODE.OPCOMP:
|
|
aModes = DebuggerPDP10.OPCOMPS;
|
|
break;
|
|
case PDP10.OPCODE.OPTEST:
|
|
aModes = DebuggerPDP10.OPTESTS;
|
|
break;
|
|
default:
|
|
aModes = [""];
|
|
break;
|
|
}
|
|
|
|
var opMode = 0;
|
|
for (var op in opMasks) {
|
|
|
|
opNum = opMasks[op];
|
|
for (var iMode = 0; iMode < aModes.length; iMode++) {
|
|
|
|
var sMode = aModes[iMode];
|
|
if (sMode == "S" && opNum > DebuggerPDP10.OPS.MOVM) sMode = "B";
|
|
var sCandidate = DebuggerPDP10.OPNAMES[opNum] + sMode;
|
|
|
|
if (sMnemonic == sCandidate) {
|
|
if (opMask != PDP10.OPCODE.OPTEST) {
|
|
opMode = iMode;
|
|
} else {
|
|
opMode = ((iMode & 0o3) << 1) | ((iMode & 0o14) << 2);
|
|
}
|
|
opCode = (op | (opMode << 6)) * PDP10.OPCODE.OP_SCALE;
|
|
break;
|
|
}
|
|
}
|
|
if (opCode >= 0) break;
|
|
}
|
|
if (opCode >= 0) break;
|
|
}
|
|
|
|
if (opCode >= 0) {
|
|
if (sOperands) {
|
|
var aOperands = sOperands.split(',');
|
|
for (var i = 0; i < aOperands.length; i++) {
|
|
var sOperand = aOperands[i].trim();
|
|
if (!sOperand) continue;
|
|
if (i > 1) {
|
|
this.println("too many operands: " + sOperand);
|
|
opCode = -1;
|
|
break;
|
|
}
|
|
var match = sOperand.match(/(@?)([^(]*)\(?([^)]*)\)?/);
|
|
if (!match) {
|
|
this.println("unknown operand: " + sOperand);
|
|
opCode = -1;
|
|
break;
|
|
}
|
|
sOperand = match[2];
|
|
if (i || aOperands.length == 1) {
|
|
/*
|
|
* If this is NOT the first operand, then replace all periods NOT preceded
|
|
* by a digit with the current address.
|
|
*/
|
|
if (!sOperand) {
|
|
sOperand = "0";
|
|
} else {
|
|
sOperand = sOperand.replace(/(^|[^0-9])\./g, "$1" + this.toStrOffset(addr));
|
|
}
|
|
}
|
|
var operand = this.parseExpression(sOperand);
|
|
if (operand == undefined) {
|
|
opCode = -1;
|
|
break;
|
|
}
|
|
if (!i && aOperands.length > 1) {
|
|
if (opMask == PDP10.OPCODE.OPIO) {
|
|
if (operand < 0 || operand > PDP10.OPCODE.IO_MASK) {
|
|
operand &= PDP10.OPCODE.IO_MASK;
|
|
if (MAXDEBUG) this.println("device code (" + sOperand + ") truncated to " + this.toStrBase(operand));
|
|
}
|
|
opCode += (operand * PDP10.OPCODE.IO_SCALE);
|
|
}
|
|
else {
|
|
if (operand < 0 || operand > PDP10.OPCODE.A_MASK) {
|
|
operand &= PDP10.OPCODE.A_MASK;
|
|
if (MAXDEBUG) this.println("accumulator (" + sOperand + ") truncated to " + this.toStrBase(operand));
|
|
}
|
|
opCode += (operand << PDP10.OPCODE.A_SHIFT);
|
|
}
|
|
continue;
|
|
}
|
|
if (operand < 0 || operand > PDP10.OPCODE.Y_MASK) {
|
|
operand &= PDP10.ADDR_MASK;
|
|
if (MAXDEBUG) this.println("address (" + sOperand + ") truncated to " + this.toStrBase(operand));
|
|
}
|
|
opCode += operand;
|
|
sOperand = match[3];
|
|
if (sOperand) {
|
|
operand = this.parseExpression(sOperand);
|
|
if (operand == undefined) {
|
|
opCode = -1;
|
|
break;
|
|
}
|
|
if (operand < 0 || operand > PDP10.OPCODE.X_MASK) {
|
|
operand &= PDP10.OPCODE.X_MASK;
|
|
if (MAXDEBUG) this.println("index (" + sOperand + ") truncated to " + this.toStrBase(operand));
|
|
}
|
|
opCode += operand << PDP10.OPCODE.X_SHIFT;
|
|
}
|
|
if (match[1]) opCode += PDP10.OPCODE.I_BIT;
|
|
}
|
|
}
|
|
//
|
|
// TODO: Complain about missing operands only if we know the instruction requires them.
|
|
//
|
|
// else {
|
|
// this.println("missing operand(s)");
|
|
// opCode = -1;
|
|
// }
|
|
}
|
|
else if (sOperands != null) {
|
|
this.println("unknown instruction: " + sOpcode + ' ' + sOperands);
|
|
}
|
|
return opCode;
|
|
}
|
|
|
|
/**
|
|
* stopInstruction(sMessage)
|
|
*
|
|
* TODO: Currently, the only way to prevent this call from stopping the CPU is when you're single-stepping.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} [sMessage]
|
|
* @return {boolean} true if stopping is enabled, false if not
|
|
*/
|
|
stopInstruction(sMessage)
|
|
{
|
|
var cpu = this.cpu;
|
|
if (cpu.isRunning()) {
|
|
cpu.setPC(this.cpu.getLastPC());
|
|
if (sMessage) this.println(sMessage);
|
|
this.stopCPU();
|
|
/*
|
|
* TODO: Review the appropriate-ness of throwing a bogus vector number in order to immediately stop
|
|
* the instruction. It's handy, but it also means that we no longer actually return true, so callers
|
|
* of either stopInstruction() or undefinedInstruction() may have unreachable code paths.
|
|
*/
|
|
throw -1;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* undefinedInstruction(opCode)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} opCode
|
|
* @return {boolean} true if stopping is enabled, false if not
|
|
*/
|
|
undefinedInstruction(opCode)
|
|
{
|
|
if (this.messageEnabled(MessagesPDP10.CPU)) {
|
|
this.printMessage("undefined opcode " + this.toStrBase(opCode), true, true);
|
|
return this.stopInstruction(); // allow the caller to step over it if they really want a trap generated
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* checkMemoryRead(addr, nb)
|
|
*
|
|
* This "check" function is called by a Memory block to inform us that a memory read occurred, giving us an
|
|
* opportunity to track the read if we want, and look for a matching "read" breakpoint, if any.
|
|
*
|
|
* In the "old days", it would be an error for this call to fail to find a matching Debugger breakpoint, but now
|
|
* Memory blocks have no idea whether the Debugger or the machine's Debug register(s) triggered this "checked" read.
|
|
*
|
|
* If we return true, we "trump" the machine's Debug register(s); false allows normal Debug register processing.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} addr
|
|
* @param {number} [nb] (# of bytes; default is 1)
|
|
* @return {boolean} true if breakpoint hit, false if not
|
|
*/
|
|
checkMemoryRead(addr, nb)
|
|
{
|
|
if (this.checkBreakpoint(addr, nb || 1, this.aBreakRead)) {
|
|
this.stopCPU(false);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* checkMemoryWrite(addr, nb)
|
|
*
|
|
* This "check" function is called by a Memory block to inform us that a memory write occurred, giving us an
|
|
* opportunity to track the write if we want, and look for a matching "write" breakpoint, if any.
|
|
*
|
|
* In the "old days", it would be an error for this call to fail to find a matching Debugger breakpoint, but now
|
|
* Memory blocks have no idea whether the Debugger or the machine's Debug register(s) triggered this "checked" write.
|
|
*
|
|
* If we return true, we "trump" the machine's Debug register(s); false allows normal Debug register processing.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} addr
|
|
* @param {number} [nb] (# of bytes; default is 1)
|
|
* @return {boolean} true if breakpoint hit, false if not
|
|
*/
|
|
checkMemoryWrite(addr, nb)
|
|
{
|
|
if (this.checkBreakpoint(addr, nb || 1, this.aBreakWrite)) {
|
|
this.stopCPU(false);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* clearBreakpoints()
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
*/
|
|
clearBreakpoints()
|
|
{
|
|
var i, dbgAddr, addr;
|
|
this.aBreakExec = ["bp"];
|
|
if (this.aBreakRead !== undefined) {
|
|
for (i = 1; i < this.aBreakRead.length; i++) {
|
|
dbgAddr = this.aBreakRead[i];
|
|
addr = this.getAddr(dbgAddr);
|
|
this.bus.removeMemBreak(addr, false);
|
|
}
|
|
}
|
|
this.aBreakRead = ["br"];
|
|
if (this.aBreakWrite !== undefined) {
|
|
for (i = 1; i < this.aBreakWrite.length; i++) {
|
|
dbgAddr = this.aBreakWrite[i];
|
|
addr = this.getAddr(dbgAddr);
|
|
this.bus.removeMemBreak(addr, true);
|
|
}
|
|
}
|
|
this.aBreakWrite = ["bw"];
|
|
/*
|
|
* nSuppressBreaks ensures we can't get into an infinite loop where a breakpoint lookup
|
|
* requires reading memory that triggers more memory reads, which triggers more breakpoint checks.
|
|
*/
|
|
this.nSuppressBreaks = 0;
|
|
this.nBreakInstructions = 0;
|
|
}
|
|
|
|
/**
|
|
* addBreakpoint(aBreak, dbgAddr, fTemporary)
|
|
*
|
|
* In case you haven't already figured this out, all our breakpoint commands use the address
|
|
* to identify a breakpoint, not an incrementally assigned breakpoint index like other debuggers;
|
|
* see doBreak() for details.
|
|
*
|
|
* This has a few implications, one being that you CANNOT set more than one kind of breakpoint
|
|
* on a single address. In practice, that's rarely a problem, because you can almost always set
|
|
* a different breakpoint on a neighboring address.
|
|
*
|
|
* Also, there is one exception to the "one address, one breakpoint" rule, and that involves
|
|
* temporary breakpoints (ie, one-time execution breakpoints that either a "p" or "g" command
|
|
* may create to step over a chunk of code). Those breakpoints automatically clear themselves,
|
|
* so there usually isn't any need to refer to them using breakpoint commands.
|
|
*
|
|
* TODO: Consider supporting the more "traditional" breakpoint index syntax; the current
|
|
* address-based syntax was implemented solely for expediency and consistency. At the same time,
|
|
* also consider a more WDEB386-like syntax, where "br" is used to set a variety of access-specific
|
|
* breakpoints, using modifiers like "r1", "r2", "w1", "w2, etc.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {Array} aBreak
|
|
* @param {DbgAddrPDP10} dbgAddr
|
|
* @param {boolean} [fTemporary]
|
|
* @return {boolean} true if breakpoint added, false if already exists
|
|
*/
|
|
addBreakpoint(aBreak, dbgAddr, fTemporary)
|
|
{
|
|
var fSuccess = true;
|
|
|
|
// this.nSuppressBreaks++;
|
|
|
|
/*
|
|
* Instead of complaining that a breakpoint already exists (as we used to do), we now
|
|
* allow breakpoints to be re-set; this makes it easier to update any commands that may
|
|
* be associated with the breakpoint.
|
|
*
|
|
* The only exception: we DO allow a temporary breakpoint at an address where there may
|
|
* already be a breakpoint, so that you can easily step ("p" or "g") over such addresses.
|
|
*/
|
|
if (!fTemporary) {
|
|
this.findBreakpoint(aBreak, dbgAddr, true, false, true);
|
|
}
|
|
|
|
if (aBreak != this.aBreakExec) {
|
|
var addr = this.getAddr(dbgAddr);
|
|
if (addr === PDP10.ADDR_INVALID) {
|
|
this.println("invalid address: " + this.toStrAddr(dbgAddr));
|
|
fSuccess = false;
|
|
} else {
|
|
var fWrite = (aBreak == this.aBreakWrite);
|
|
this.bus.addMemBreak(addr, fWrite);
|
|
}
|
|
}
|
|
|
|
if (fSuccess) {
|
|
aBreak.push(dbgAddr);
|
|
if (fTemporary) {
|
|
dbgAddr.fTemporary = true;
|
|
}
|
|
else {
|
|
this.printBreakpoint(aBreak, aBreak.length-1, "set");
|
|
this.historyInit();
|
|
}
|
|
}
|
|
|
|
// this.nSuppressBreaks--;
|
|
|
|
return fSuccess;
|
|
}
|
|
|
|
/**
|
|
* findBreakpoint(aBreak, dbgAddr, fRemove, fTemporary, fQuiet)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {Array} aBreak
|
|
* @param {DbgAddrPDP10} dbgAddr
|
|
* @param {boolean} [fRemove]
|
|
* @param {boolean} [fTemporary]
|
|
* @param {boolean} [fQuiet]
|
|
* @return {boolean} true if found, false if not
|
|
*/
|
|
findBreakpoint(aBreak, dbgAddr, fRemove, fTemporary, fQuiet)
|
|
{
|
|
var fFound = false;
|
|
var addr = this.getAddr(dbgAddr);
|
|
for (var i = 1; i < aBreak.length; i++) {
|
|
var dbgAddrBreak = aBreak[i];
|
|
if (addr == this.getAddr(dbgAddrBreak)) {
|
|
if (!fTemporary || dbgAddrBreak.fTemporary) {
|
|
fFound = true;
|
|
if (fRemove) {
|
|
if (!dbgAddrBreak.fTemporary && !fQuiet) {
|
|
this.printBreakpoint(aBreak, i, "cleared");
|
|
}
|
|
aBreak.splice(i, 1);
|
|
if (aBreak != this.aBreakExec) {
|
|
var fWrite = (aBreak == this.aBreakWrite);
|
|
this.bus.removeMemBreak(addr, fWrite);
|
|
}
|
|
/*
|
|
* We'll mirror the logic in addBreakpoint() and leave the history buffer alone if this
|
|
* was a temporary breakpoint.
|
|
*/
|
|
if (!dbgAddrBreak.fTemporary) {
|
|
this.historyInit();
|
|
}
|
|
break;
|
|
}
|
|
if (!fQuiet) this.printBreakpoint(aBreak, i, "exists");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return fFound;
|
|
}
|
|
|
|
/**
|
|
* listBreakpoints(aBreak)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {Array} aBreak
|
|
* @return {number} of breakpoints listed, 0 if none
|
|
*/
|
|
listBreakpoints(aBreak)
|
|
{
|
|
for (var i = 1; i < aBreak.length; i++) {
|
|
this.printBreakpoint(aBreak, i);
|
|
}
|
|
return aBreak.length - 1;
|
|
}
|
|
|
|
/**
|
|
* printBreakpoint(aBreak, i, sAction)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {Array} aBreak
|
|
* @param {number} i
|
|
* @param {string} [sAction]
|
|
*/
|
|
printBreakpoint(aBreak, i, sAction)
|
|
{
|
|
var dbgAddr = aBreak[i];
|
|
this.println(aBreak[0] + ' ' + this.toStrAddr(dbgAddr) + (sAction? (' ' + sAction) : (dbgAddr.sCmd? (' "' + dbgAddr.sCmd + '"') : '')));
|
|
}
|
|
|
|
/**
|
|
* setTempBreakpoint(dbgAddr)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {DbgAddrPDP10} dbgAddr of new temp breakpoint
|
|
*/
|
|
setTempBreakpoint(dbgAddr)
|
|
{
|
|
this.addBreakpoint(this.aBreakExec, dbgAddr, true);
|
|
}
|
|
|
|
/**
|
|
* clearTempBreakpoint(addr)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number|undefined} [addr] clear all temp breakpoints if no address specified
|
|
*/
|
|
clearTempBreakpoint(addr)
|
|
{
|
|
if (addr !== undefined) {
|
|
this.checkBreakpoint(addr, 1, this.aBreakExec, true);
|
|
this.nStep = 0;
|
|
} else {
|
|
for (var i = 1; i < this.aBreakExec.length; i++) {
|
|
var dbgAddrBreak = this.aBreakExec[i];
|
|
if (dbgAddrBreak.fTemporary) {
|
|
if (!this.findBreakpoint(this.aBreakExec, dbgAddrBreak, true, true)) break;
|
|
i = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* checkBreakpoint(addr, nb, aBreak, fTemporary)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} addr
|
|
* @param {number} nb (# of bytes)
|
|
* @param {Array} aBreak
|
|
* @param {boolean} [fTemporary]
|
|
* @return {boolean} true if breakpoint has been hit, false if not
|
|
*/
|
|
checkBreakpoint(addr, nb, aBreak, fTemporary)
|
|
{
|
|
/*
|
|
* Time to check for breakpoints; note that this should be done BEFORE updating history data
|
|
* (see checkInstruction), since we might not actually execute the current instruction.
|
|
*/
|
|
var fBreak = false;
|
|
|
|
if (!this.nSuppressBreaks++) {
|
|
|
|
for (var i = 1; !fBreak && i < aBreak.length; i++) {
|
|
|
|
var dbgAddrBreak = aBreak[i];
|
|
|
|
if (fTemporary && !dbgAddrBreak.fTemporary) continue;
|
|
|
|
/*
|
|
* If we're checking an execution address, which is always virtual, and virtual
|
|
* addresses are always restricted to 16 bits, let's mask the breakpoint address to match
|
|
* (the user should know better, but we'll be nice).
|
|
*/
|
|
var addrBreak = this.getAddr(dbgAddrBreak) & (aBreak == this.aBreakExec? 0xffff : -1);
|
|
for (var n = 0; n < nb; n++) {
|
|
|
|
if ((addr + n) != addrBreak) continue;
|
|
|
|
var a;
|
|
fBreak = true;
|
|
if (dbgAddrBreak.fTemporary) {
|
|
this.findBreakpoint(aBreak, dbgAddrBreak, true, true);
|
|
fTemporary = true;
|
|
}
|
|
if (a = dbgAddrBreak.aCmds) {
|
|
/*
|
|
* When one or more commands are attached to a breakpoint, we don't halt by default.
|
|
* Instead, we set fBreak to true only if, at the completion of all the commands, the
|
|
* CPU is halted; in other words, you should include "h" as one of the breakpoint commands
|
|
* if you want the breakpoint to stop execution.
|
|
*
|
|
* Another useful command is "if", which will return false if the expression is false,
|
|
* at which point we'll jump ahead to the next "else" command, and if there isn't an "else",
|
|
* we abort.
|
|
*/
|
|
fBreak = false;
|
|
for (var j = 0; j < a.length; j++) {
|
|
if (!this.doCommand(a[j], true)) {
|
|
if (a[j].indexOf("if")) {
|
|
fBreak = true; // the failed command wasn't "if", so abort
|
|
break;
|
|
}
|
|
var k = j + 1;
|
|
for (; k < a.length; k++) {
|
|
if (!a[k].indexOf("else")) break;
|
|
j++;
|
|
}
|
|
if (k == a.length) { // couldn't find an "else" after the "if", so abort
|
|
fBreak = true;
|
|
break;
|
|
}
|
|
/*
|
|
* If we're still here, we'll execute the "else" command (which is just a no-op),
|
|
* followed by any remaining commands.
|
|
*/
|
|
}
|
|
}
|
|
if (!this.cpu.isRunning()) fBreak = true;
|
|
}
|
|
if (fBreak) {
|
|
if (!fTemporary) this.printBreakpoint(aBreak, i, "hit");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
this.nSuppressBreaks--;
|
|
|
|
return fBreak;
|
|
}
|
|
|
|
/**
|
|
* getAccOutput(iAcc)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} iAcc
|
|
* @return {string}
|
|
*/
|
|
getAccOutput(iAcc)
|
|
{
|
|
var sReg = Str.toOct(iAcc, 2);
|
|
this.setAddr(this.dbgAddrAcc, iAcc);
|
|
sReg += '=' + this.toStrBase(this.getWord(this.dbgAddrAcc), 36) + ' ';
|
|
return sReg;
|
|
}
|
|
|
|
/**
|
|
* getRegOutput(iReg)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} iReg
|
|
* @return {string}
|
|
*/
|
|
getRegOutput(iReg)
|
|
{
|
|
var sReg = this.getRegName(iReg);
|
|
if (sReg) {
|
|
var nBits = (iReg >= DebuggerPDP10.REGS.C0? 1 : (iReg == DebuggerPDP10.REGS.RA? 23 : 18));
|
|
sReg += '=' + this.toStrBase(this.getRegValue(iReg), nBits) + ' ';
|
|
}
|
|
return sReg;
|
|
}
|
|
|
|
/**
|
|
* getMiscDump()
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @return {string}
|
|
*/
|
|
getMiscDump()
|
|
{
|
|
var sDump = "";
|
|
for (var i = 0; i < DebuggerPDP10.REGNAMES.length; i++) {
|
|
sDump += this.getRegOutput(i);
|
|
}
|
|
return sDump;
|
|
}
|
|
|
|
/**
|
|
* getRegDump(fMisc)
|
|
*
|
|
* For now, fMisc defaults to true, providing a full register dump by default.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {boolean|undefined} [fMisc] (true to include misc registers)
|
|
* @return {string}
|
|
*/
|
|
getRegDump(fMisc = true)
|
|
{
|
|
var sDump = "";
|
|
for (var i = 0; i < 16; i++) {
|
|
if (i && !(i & 3)) sDump += '\n';
|
|
sDump += this.getAccOutput(i);
|
|
}
|
|
if (fMisc) sDump += '\n' + this.getMiscDump();
|
|
return sDump;
|
|
}
|
|
|
|
/**
|
|
* comparePairs(p1, p2)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number|string|Array|Object} p1
|
|
* @param {number|string|Array|Object} p2
|
|
* @return {number}
|
|
*/
|
|
comparePairs(p1, p2)
|
|
{
|
|
return p1[0] > p2[0]? 1 : p1[0] < p2[0]? -1 : 0;
|
|
}
|
|
|
|
/**
|
|
* addSymbols(sModule, addr, len, aSymbols)
|
|
*
|
|
* As filedump.js (formerly convrom.php) explains, aSymbols is a JSON-encoded object whose properties consist
|
|
* of all the symbols (in upper-case), and the values of those properties are objects containing any or all of
|
|
* the following properties:
|
|
*
|
|
* 'v': the value of an absolute (unsized) value
|
|
* 'b': either 1, 2, 4 or undefined if an unsized value
|
|
* 's': either a hard-coded segment or undefined
|
|
* 'o': the offset of the symbol within the associated address space
|
|
* 'l': the original-case version of the symbol, present only if it wasn't originally upper-case
|
|
* 'a': annotation for the specified offset; eg, the original assembly language, with optional comment
|
|
*
|
|
* To that list of properties, we also add:
|
|
*
|
|
* 'p': the physical address (calculated whenever both 's' and 'o' properties are defined)
|
|
*
|
|
* Note that values for any 'v', 'b', 's' and 'o' properties are unquoted decimal values, and the values
|
|
* for any 'l' or 'a' properties are quoted strings. Also, if double-quotes were used in any of the original
|
|
* annotation ('a') values, they will have been converted to two single-quotes, so we're responsible for
|
|
* converting them back to individual double-quotes.
|
|
*
|
|
* For example:
|
|
* {
|
|
* 'HF_PORT': {
|
|
* 'v':800
|
|
* },
|
|
* 'HDISK_INT': {
|
|
* 'b':4, 's':0, 'o':52
|
|
* },
|
|
* 'ORG_VECTOR': {
|
|
* 'b':4, 's':0, 'o':76
|
|
* },
|
|
* 'CMD_BLOCK': {
|
|
* 'b':1, 's':64, 'o':66
|
|
* },
|
|
* 'DISK_SETUP': {
|
|
* 'o':3
|
|
* },
|
|
* '.40': {
|
|
* 'o':40, 'a':"MOV AX,WORD PTR ORG_VECTOR ;GET DISKETTE VECTOR"
|
|
* }
|
|
* }
|
|
*
|
|
* If a symbol only has an offset, then that offset value can be assigned to the symbol property directly:
|
|
*
|
|
* 'DISK_SETUP': 3
|
|
*
|
|
* The last property is an example of an "anonymous" entry, for offsets where there is no associated symbol.
|
|
* Such entries are identified by a period followed by a unique number (usually the offset of the entry), and
|
|
* they usually only contain offset ('o') and annotation ('a') properties. I could eliminate the leading
|
|
* period, but it offers a very convenient way of quickly discriminating among genuine vs. anonymous symbols.
|
|
*
|
|
* We add all these entries to our internal symbol table, which is an array of 4-element arrays, each of which
|
|
* look like:
|
|
*
|
|
* [addr, len, aSymbols, aOffsets]
|
|
*
|
|
* There are two basic symbol operations: findSymbol(), which takes an address and finds the symbol, if any,
|
|
* at that address, and findSymbolAddr(), which takes a string and attempts to match it to a non-anonymous
|
|
* symbol with a matching offset ('o') property.
|
|
*
|
|
* To implement findSymbol() efficiently, addSymbols() creates an array of [offset, sSymbol] pairs
|
|
* (aOffsets), one pair for each symbol that corresponds to an offset within the specified address space.
|
|
*
|
|
* We guarantee the elements of aOffsets are in offset order, because we build it using binaryInsert();
|
|
* it's quite likely that the MAP file already ordered all its symbols in offset order, but since they're
|
|
* hand-edited files, we can't assume that, and we need to ensure that findSymbol()'s binarySearch() operates
|
|
* properly.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string|null} sModule
|
|
* @param {number|null} addr (physical address where the symbols are located, if the memory is physical; eg, ROM)
|
|
* @param {number} len (the size of the region, in bytes)
|
|
* @param {Object} aSymbols (collection of symbols in this group; the format of this collection is described below)
|
|
*/
|
|
addSymbols(sModule, addr, len, aSymbols)
|
|
{
|
|
var dbgAddr = {};
|
|
var aOffsets = [];
|
|
for (var sSymbol in aSymbols) {
|
|
var symbol = aSymbols[sSymbol];
|
|
if (typeof symbol == "number") {
|
|
aSymbols[sSymbol] = symbol = {'o': symbol};
|
|
}
|
|
var offSymbol = symbol['o'];
|
|
var sAnnotation = symbol['a'];
|
|
if (offSymbol !== undefined) {
|
|
Usr.binaryInsert(aOffsets, [offSymbol >>> 0, sSymbol], this.comparePairs);
|
|
}
|
|
if (sAnnotation) symbol['a'] = sAnnotation.replace(/''/g, "\"");
|
|
}
|
|
var symbolTable = {
|
|
sModule: sModule,
|
|
addr: addr,
|
|
len: len,
|
|
aSymbols: aSymbols,
|
|
aOffsets: aOffsets
|
|
};
|
|
this.aSymbolTable.push(symbolTable);
|
|
}
|
|
|
|
/**
|
|
* dumpSymbols()
|
|
*
|
|
* TODO: Add "numerical" and "alphabetical" dump options. This is simply dumping them in whatever
|
|
* order they appeared in the original MAP file.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
*/
|
|
dumpSymbols()
|
|
{
|
|
for (var iTable = 0; iTable < this.aSymbolTable.length; iTable++) {
|
|
var symbolTable = this.aSymbolTable[iTable];
|
|
for (var sSymbol in symbolTable.aSymbols) {
|
|
if (sSymbol.charAt(0) == '.') continue;
|
|
var symbol = symbolTable.aSymbols[sSymbol];
|
|
var offSymbol = symbol['o'];
|
|
if (offSymbol === undefined) continue;
|
|
var sSymbolOrig = symbolTable.aSymbols[sSymbol]['l'];
|
|
if (sSymbolOrig) sSymbol = sSymbolOrig;
|
|
this.println(this.toStrOffset(offSymbol) + ' ' + sSymbol);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* findSymbol(dbgAddr, fNearest)
|
|
*
|
|
* Search aSymbolTable for dbgAddr, and return an Array for the corresponding symbol (empty if not found).
|
|
*
|
|
* If fNearest is true, and no exact match was found, then the Array returned will contain TWO sets of
|
|
* entries: [0]-[3] will refer to closest preceding symbol, and [4]-[7] will refer to the closest subsequent symbol.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {DbgAddrPDP10} dbgAddr
|
|
* @param {boolean} [fNearest]
|
|
* @return {Array} where [0] == symbol name, [1] == symbol value, [2] == any annotation, and [3] == any associated comment
|
|
*/
|
|
findSymbol(dbgAddr, fNearest)
|
|
{
|
|
var aSymbol = [];
|
|
var addrSymbol = this.getAddr(dbgAddr) >>> 0;
|
|
for (var iTable = 0; iTable < this.aSymbolTable.length; iTable++) {
|
|
var symbolTable = this.aSymbolTable[iTable];
|
|
var addr = symbolTable.addr >>> 0;
|
|
var len = symbolTable.len;
|
|
if (addrSymbol >= addr && addrSymbol < addr + len) {
|
|
var offSymbol = addrSymbol - addr;
|
|
var result = Usr.binarySearch(symbolTable.aOffsets, [offSymbol], this.comparePairs);
|
|
if (result >= 0) {
|
|
this.returnSymbol(iTable, result, aSymbol);
|
|
}
|
|
else if (fNearest) {
|
|
result = ~result;
|
|
this.returnSymbol(iTable, result-1, aSymbol);
|
|
this.returnSymbol(iTable, result, aSymbol);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
return aSymbol;
|
|
}
|
|
|
|
/**
|
|
* findSymbolAddr(sSymbol)
|
|
*
|
|
* Search our symbol tables for sSymbol, and if found, return a dbgAddr (same as parseAddr()).
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} sSymbol
|
|
* @return {DbgAddrPDP10|undefined}
|
|
*/
|
|
findSymbolAddr(sSymbol)
|
|
{
|
|
var dbgAddr, offSymbol;
|
|
|
|
if (sSymbol.match(/^[a-z_][a-z0-9_]*$/i)) {
|
|
var sUpperCase = sSymbol.toUpperCase();
|
|
for (var iTable = 0; iTable < this.aSymbolTable.length; iTable++) {
|
|
var symbolTable = this.aSymbolTable[iTable];
|
|
var symbol = symbolTable.aSymbols[sUpperCase];
|
|
if (symbol != null) {
|
|
offSymbol = symbol['o'];
|
|
/*
|
|
* If the symbol matched but there's no 'o' offset (ie, it wasn't for an address), there's
|
|
* no point looking any farther, since each symbol appears only once.
|
|
*
|
|
* NOTE: We assume that every ROM is ORG'ed at 0x0000, and therefore unless the symbol has an
|
|
* explicitly-defined segment, we return the segment associated with the entire group; for a ROM,
|
|
* that segment is normally "addrROM >>> 4". Down the road, we may want/need to support a special
|
|
* symbol entry (eg, ".ORG") that defines an alternate origin.
|
|
*/
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (offSymbol != null) {
|
|
dbgAddr = this.newAddr(offSymbol);
|
|
}
|
|
return dbgAddr;
|
|
}
|
|
|
|
/**
|
|
* loadAssembly(macro10, addrLoad)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {Macro10} macro10
|
|
* @param {number|null} addrLoad
|
|
*/
|
|
loadAssembly(macro10, addrLoad)
|
|
{
|
|
this.println("loadAssembly()");
|
|
}
|
|
|
|
/**
|
|
* returnSymbol(iTable, iOffset, aSymbol)
|
|
*
|
|
* Helper function for findSymbol().
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {number} iTable
|
|
* @param {number} iOffset
|
|
* @param {Array} aSymbol is updated with the specified symbol, if it exists
|
|
*/
|
|
returnSymbol(iTable, iOffset, aSymbol)
|
|
{
|
|
var symbol = {};
|
|
var aOffsets = this.aSymbolTable[iTable].aOffsets;
|
|
var offset = 0, sSymbol = null;
|
|
if (iOffset >= 0 && iOffset < aOffsets.length) {
|
|
offset = aOffsets[iOffset][0];
|
|
sSymbol = aOffsets[iOffset][1];
|
|
}
|
|
if (sSymbol) {
|
|
symbol = this.aSymbolTable[iTable].aSymbols[sSymbol];
|
|
sSymbol = (sSymbol.charAt(0) == '.'? null : (symbol['l'] || sSymbol));
|
|
}
|
|
aSymbol.push(sSymbol);
|
|
aSymbol.push(offset);
|
|
aSymbol.push(symbol['a']);
|
|
aSymbol.push(symbol['c']);
|
|
}
|
|
|
|
/**
|
|
* doHelp()
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
*/
|
|
doHelp()
|
|
{
|
|
var s = "commands:";
|
|
for (var sCommand in DebuggerPDP10.COMMANDS) {
|
|
s += '\n' + Str.pad(sCommand, 9) + DebuggerPDP10.COMMANDS[sCommand];
|
|
}
|
|
if (!this.checksEnabled()) s += "\nnote: history disabled if no exec breakpoints";
|
|
this.println(s);
|
|
}
|
|
|
|
/**
|
|
* doAssemble(asArgs)
|
|
*
|
|
* This always receives the complete argument array, where the order of the arguments is:
|
|
*
|
|
* [0]: the assemble command (assumed to be "a")
|
|
* [1]: the target address (eg, "200")
|
|
* [2]: the operation code, aka instruction name (eg, "adc")
|
|
* [3]: the operation mode operand, if any (eg, "14", "[1234]", etc)
|
|
*
|
|
* The Debugger enters "assemble mode" whenever only the first (or first and second) arguments are present.
|
|
* As long as "assemble mode is active, the user can omit the first two arguments on all later assemble commands
|
|
* until "assemble mode" is cancelled with an empty command line; the command processor automatically prepends "a"
|
|
* and the next available target address to the argument array.
|
|
*
|
|
* Entering "assemble mode" is optional; one could enter a series of fully-qualified assemble commands; eg:
|
|
*
|
|
* a ff00 cld
|
|
* a ff01 ldx 28
|
|
* ...
|
|
*
|
|
* without ever entering "assemble mode", but of course, that requires more typing and doesn't take advantage
|
|
* of automatic target address advancement (see dbgAddrAssemble).
|
|
*
|
|
* NOTE: As the previous example implies, you can even assemble new instructions into ROM address space;
|
|
* as our setByte() function explains, the ROM write-notification handlers only refuse writes from the CPU.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {Array.<string>} asArgs is the complete argument array, beginning with the "a" command in asArgs[0]
|
|
*/
|
|
doAssemble(asArgs)
|
|
{
|
|
var dbgAddr = this.parseAddr(asArgs[1], this.dbgAddrAssemble);
|
|
if (!dbgAddr) return;
|
|
|
|
var sOpcode = asArgs[2];
|
|
|
|
if (sOpcode == undefined) {
|
|
this.println("begin assemble at " + this.toStrAddr(dbgAddr));
|
|
this.fAssemble = true;
|
|
this.cmp.updateDisplays();
|
|
return;
|
|
}
|
|
|
|
if (sOpcode[0] == '/' || sOpcode.indexOf(':') >= 0) {
|
|
var dbg = this;
|
|
if (this.macro10) {
|
|
dbg.println("assembly already in progress");
|
|
}
|
|
else {
|
|
var addrLoad = dbgAddr.addr;
|
|
this.macro10 = new Macro10(sOpcode, addrLoad, dbg, function(macro10, sURL, nErrorCode) {
|
|
if (!nErrorCode) {
|
|
dbg.loadAssembly(macro10, addrLoad);
|
|
} else {
|
|
dbg.println("error assembling " + sURL + ": (" + nErrorCode + ")");
|
|
}
|
|
dbg.macro10 = null;
|
|
});
|
|
}
|
|
return;
|
|
}
|
|
|
|
asArgs.shift();
|
|
asArgs.shift();
|
|
asArgs.shift();
|
|
var sOperands = asArgs.join("");
|
|
var opCode = this.parseInstruction(sOpcode, sOperands, dbgAddr.addr || 0);
|
|
|
|
if (opCode >= 0) {
|
|
this.setWord(dbgAddr, opCode);
|
|
this.println(this.getInstruction(dbgAddr));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* doBreak(sCmd, sAddr, sOptions)
|
|
*
|
|
* As the "help" output below indicates, the following breakpoint commands are supported:
|
|
*
|
|
* bp # set exec breakpoint
|
|
* br # set read breakpoint
|
|
* bw # set write breakpoint
|
|
* bc # clear breakpoint (* to clear all)
|
|
* bl list all breakpoints
|
|
* bn [#] break after # instruction(s)
|
|
*
|
|
* The "bn" command, like the "dh" command and all other commands that use an instruction count,
|
|
* assumes a decimal value, regardless of the current base. Use "bn" without an argument to display
|
|
* the break count, and use "bn 0" to clear the break count.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} sCmd
|
|
* @param {string|undefined} [sAddr]
|
|
* @param {string} [sOptions] (the rest of the breakpoint command-line)
|
|
*/
|
|
doBreak(sCmd, sAddr, sOptions)
|
|
{
|
|
if (sAddr == '?') {
|
|
this.println("breakpoint commands:");
|
|
this.println("\tbp #\tset exec breakpoint");
|
|
this.println("\tbr #\tset read breakpoint");
|
|
this.println("\tbw #\tset write breakpoint");
|
|
this.println("\tbc #\tclear breakpoint (* to clear all)");
|
|
this.println("\tbl\tlist all breakpoints");
|
|
this.println("\tbn [#]\tbreak after # instruction(s)");
|
|
return;
|
|
}
|
|
|
|
var sParm = sCmd.charAt(1);
|
|
if (sParm == 'l') {
|
|
var cBreaks = 0;
|
|
cBreaks += this.listBreakpoints(this.aBreakExec);
|
|
cBreaks += this.listBreakpoints(this.aBreakRead);
|
|
cBreaks += this.listBreakpoints(this.aBreakWrite);
|
|
if (!cBreaks) this.println("no breakpoints");
|
|
return;
|
|
}
|
|
|
|
if (sParm == 'n') {
|
|
var n = +sAddr || 0;
|
|
if (sAddr) this.nBreakInstructions = n;
|
|
this.println("break after " + n + " instruction(s)");
|
|
return;
|
|
}
|
|
|
|
if (sAddr === undefined) {
|
|
this.println("missing breakpoint address");
|
|
return;
|
|
}
|
|
|
|
var dbgAddr = this.newAddr();
|
|
if (sAddr != '*') {
|
|
dbgAddr = this.parseAddr(sAddr, this.dbgAddrCode);
|
|
if (!dbgAddr) return;
|
|
}
|
|
|
|
if (sParm == 'c') {
|
|
if (dbgAddr.addr == null) {
|
|
this.clearBreakpoints();
|
|
this.println("all breakpoints cleared");
|
|
return;
|
|
}
|
|
if (this.findBreakpoint(this.aBreakExec, dbgAddr, true))
|
|
return;
|
|
if (this.findBreakpoint(this.aBreakRead, dbgAddr, true))
|
|
return;
|
|
if (this.findBreakpoint(this.aBreakWrite, dbgAddr, true))
|
|
return;
|
|
this.println("breakpoint missing: " + this.toStrAddr(dbgAddr));
|
|
return;
|
|
}
|
|
|
|
if (dbgAddr.addr == null) return;
|
|
|
|
this.parseAddrOptions(dbgAddr, sOptions);
|
|
|
|
if (sParm == 'p') {
|
|
this.addBreakpoint(this.aBreakExec, dbgAddr);
|
|
return;
|
|
}
|
|
if (sParm == 'r') {
|
|
this.addBreakpoint(this.aBreakRead, dbgAddr);
|
|
return;
|
|
}
|
|
if (sParm == 'w') {
|
|
this.addBreakpoint(this.aBreakWrite, dbgAddr);
|
|
return;
|
|
}
|
|
this.println("unknown breakpoint command: " + sParm);
|
|
}
|
|
|
|
/**
|
|
* doClear(sCmd)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} [sCmd] (eg, "cls" or "clear")
|
|
*/
|
|
doClear(sCmd)
|
|
{
|
|
/*
|
|
* TODO: There should be a clear() component method that the Control Panel overrides to perform this function.
|
|
*/
|
|
if (this.controlPrint) this.controlPrint.value = "";
|
|
}
|
|
|
|
/**
|
|
* doDump(asArgs)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {Array.<string>} asArgs (formerly sCmd, [sAddr], [sLen] and [sBytes])
|
|
*/
|
|
doDump(asArgs)
|
|
{
|
|
var m;
|
|
var sCmd = asArgs[0];
|
|
var sAddr = asArgs[1];
|
|
var sLen = asArgs[2];
|
|
var sBytes = asArgs[3];
|
|
|
|
if (sAddr == '?') {
|
|
var sDumpers = "";
|
|
for (m in MessagesPDP10.CATEGORIES) {
|
|
if (this.afnDumpers[m]) {
|
|
if (sDumpers) sDumpers += ',';
|
|
sDumpers = sDumpers + m;
|
|
}
|
|
}
|
|
sDumpers += ",state,symbols";
|
|
this.println("dump memory commands:");
|
|
this.println("\tdw [a] [n] dump n words at address a");
|
|
this.println("\tds [a] [n] dump n words at address a as JSON");
|
|
this.println("\tdh [p] [n] dump n instructions from history position p");
|
|
if (sDumpers.length) this.println("dump extension commands:\n\t" + sDumpers);
|
|
return;
|
|
}
|
|
|
|
if (sAddr == "state") {
|
|
var sState = this.cmp.powerOff(true);
|
|
if (sLen == "console") {
|
|
/*
|
|
* Console buffers are notoriously small, and even the following code, which breaks the
|
|
* data into parts (eg, "d state console 1", "d state console 2", etc) just isn't that helpful.
|
|
*
|
|
* var nPart = +sBytes;
|
|
* if (nPart) sState = sState.substr(1000000 * (nPart-1), 1000000);
|
|
*
|
|
* So, the best way to capture a large machine state is to use the new "Save Machine" link
|
|
* that downloads a machine's entire state. Alternatively, run your own local server and use
|
|
* server-side storage. Take a look at the "Save" binding in computer.js, which binds an HTML
|
|
* control to the computer.powerOff() and computer.saveServerState() functions.
|
|
*/
|
|
console.log(sState);
|
|
} else {
|
|
this.doClear();
|
|
if (sState) this.println(sState);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (sAddr == "symbols") {
|
|
this.dumpSymbols();
|
|
return;
|
|
}
|
|
|
|
if (sCmd == "d") {
|
|
for (m in MessagesPDP10.CATEGORIES) {
|
|
if (asArgs[1] == m) {
|
|
var fnDumper = this.afnDumpers[m];
|
|
if (fnDumper) {
|
|
asArgs.shift();
|
|
asArgs.shift();
|
|
fnDumper(asArgs);
|
|
} else {
|
|
this.println("no dump registered for " + sAddr);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
if (!sAddr) sCmd = this.sCmdDumpPrev || "dw";
|
|
} else {
|
|
this.sCmdDumpPrev = sCmd;
|
|
}
|
|
|
|
if (sCmd == "dh") {
|
|
this.dumpHistory(sAddr, sLen);
|
|
return;
|
|
}
|
|
|
|
var dbgAddr = this.parseAddr(sAddr, this.dbgAddrData);
|
|
if (!dbgAddr) return;
|
|
|
|
var len = 0;
|
|
var fJSON = (sCmd == "ds");
|
|
|
|
if (sLen) {
|
|
if (sLen.charAt(0) == 'l') {
|
|
sLen = sLen.substr(1) || sBytes;
|
|
len = this.parseValue(sLen);
|
|
}
|
|
else {
|
|
var dbgAddrEnd = this.parseAddr(sLen);
|
|
if (dbgAddrEnd) len = dbgAddrEnd.addr - dbgAddr.addr;
|
|
}
|
|
if (len < 0) len = 0;
|
|
if (len > 0x10000) len = 0x10000;
|
|
}
|
|
|
|
var nBase = this.nBase;
|
|
if (dbgAddr.nBase) this.nBase = dbgAddr.nBase;
|
|
|
|
var size = (sCmd == "db"? 1 : 2);
|
|
var nWords = len || 32;
|
|
var nWordsPerLine = (size == 1? 2 : 4);
|
|
var nLines = (((nWords + nWordsPerLine - 1) / nWordsPerLine)|0) || 1;
|
|
|
|
var sDump = "";
|
|
while (nLines-- && nWords > 0) {
|
|
var sData = "", sChars = "";
|
|
sAddr = this.toStrAddr(dbgAddr);
|
|
var n = nWordsPerLine;
|
|
while (n-- > 0 && nWords-- > 0) {
|
|
var w = this.getWord(dbgAddr, 1);
|
|
if (fJSON) {
|
|
if (sData) sData += ",";
|
|
sData += w;
|
|
} else {
|
|
sData += this.toStrWord(w);
|
|
sData += ' ';
|
|
}
|
|
for (var i = 0; size == 1 && i < 6; i++) {
|
|
var c = ((w % 64)|0) + 32;
|
|
sChars += String.fromCharCode(c);
|
|
w /= 64;
|
|
}
|
|
}
|
|
if (sDump) sDump += "\n";
|
|
if (fJSON) {
|
|
sDump += sData + ",";
|
|
} else {
|
|
sDump += sAddr + ": " + sData + ((n < 0)? (' ' + sChars) : "");
|
|
}
|
|
}
|
|
|
|
if (sDump) this.println(sDump);
|
|
|
|
this.nBase = nBase;
|
|
}
|
|
|
|
/**
|
|
* doEdit(asArgs)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {Array.<string>} asArgs
|
|
*/
|
|
doEdit(asArgs)
|
|
{
|
|
var fnGet, fnSet;
|
|
var sCmd = asArgs[0];
|
|
var sAddr = asArgs[1];
|
|
if (sCmd == "e" || sCmd == "ew") {
|
|
fnGet = this.getWord;
|
|
fnSet = this.setWord;
|
|
} else {
|
|
sAddr = null;
|
|
}
|
|
if (sAddr == null) {
|
|
this.println("edit memory commands:");
|
|
this.println("\tew [a] [...] edit words at address a");
|
|
return;
|
|
}
|
|
var dbgAddr = this.parseAddr(sAddr, this.dbgAddrData);
|
|
if (!dbgAddr) return;
|
|
for (var i = 2; i < asArgs.length; i++) {
|
|
var w = this.parseExpression(asArgs[i]);
|
|
if (w === undefined) break;
|
|
w = this.validateWord(w);
|
|
this.println("changing " + this.toStrAddr(dbgAddr) + " from " + this.toStrWord(fnGet.call(this, dbgAddr)) + " to " + this.toStrWord(w));
|
|
fnSet.call(this, dbgAddr, w, 1);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* doHalt(fQuiet)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {boolean} [fQuiet]
|
|
*/
|
|
doHalt(fQuiet)
|
|
{
|
|
var sMsg;
|
|
if (this.flags.running) {
|
|
if (!fQuiet) this.println("halting");
|
|
this.stopCPU();
|
|
} else {
|
|
if (this.isBusy(true)) return;
|
|
if (!fQuiet) this.println("already halted");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* doIf(sCmd, fQuiet)
|
|
*
|
|
* NOTE: Don't forget that the default base for all numeric constants is 16 (hex), so when you evaluate
|
|
* an expression like "a==10", it will compare the value of the variable "a" to 0x10; use a trailing period
|
|
* (eg, "10.") if you really intend decimal.
|
|
*
|
|
* Also, if no variable named "a" exists, "a" will evaluate to 0x0A, so the expression "a==10" becomes
|
|
* "0x0A==0x10" (false), whereas the expression "a==10." becomes "0x0A==0x0A" (true).
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} sCmd
|
|
* @param {boolean} [fQuiet]
|
|
* @return {boolean} true if expression is non-zero, false if zero (or undefined due to a parse error)
|
|
*/
|
|
doIf(sCmd, fQuiet)
|
|
{
|
|
sCmd = Str.trim(sCmd);
|
|
if (!this.parseExpression(sCmd)) {
|
|
if (!fQuiet) this.println("false: " + sCmd);
|
|
return false;
|
|
}
|
|
if (!fQuiet) this.println("true: " + sCmd);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* doInfo(asArgs)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {Array.<string>} asArgs
|
|
* @return {boolean} true only if the instruction info command ("n") is supported
|
|
*/
|
|
doInfo(asArgs)
|
|
{
|
|
if (DEBUG) {
|
|
this.println("msPerYield: " + this.cpu.msPerYield);
|
|
this.println("nCyclesPerYield: " + this.cpu.nCyclesPerYield);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* doVar(sCmd)
|
|
*
|
|
* The command must be of the form "{variable} = [{expression}]", where expression may contain constants,
|
|
* operators, registers, symbols, other variables, or nothing at all; in the latter case, the variable, if
|
|
* any, is deleted.
|
|
*
|
|
* Other supported shorthand: "var" with no parameters prints the values of all variables, and "var {variable}"
|
|
* prints the value of the specified variable.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} sCmd
|
|
* @return {boolean} true if valid "var" assignment, false if not
|
|
*/
|
|
doVar(sCmd)
|
|
{
|
|
var a = sCmd.match(/^\s*([A-Z_]?[A-Z0-9_]*)\s*(=?)\s*(.*)$/i);
|
|
if (a) {
|
|
if (!a[1]) {
|
|
if (!this.printVariable()) this.println("no variables");
|
|
return true; // it's not considered an error to print an empty list of variables
|
|
}
|
|
if (!a[2]) {
|
|
return this.printVariable(a[1]);
|
|
}
|
|
if (!a[3]) {
|
|
this.delVariable(a[1]);
|
|
return true; // it's not considered an error to delete a variable that didn't exist
|
|
}
|
|
var v = this.parseExpression(a[3]);
|
|
if (v !== undefined) {
|
|
this.setVariable(a[1], v);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
this.println("invalid assignment:" + sCmd);
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* doList(sAddr, fPrint)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} sAddr
|
|
* @param {boolean} [fPrint]
|
|
* @return {string|null}
|
|
*/
|
|
doList(sAddr, fPrint)
|
|
{
|
|
var sSymbol = null;
|
|
|
|
var dbgAddr = this.parseAddr(sAddr);
|
|
if (dbgAddr) {
|
|
var addr = this.getAddr(dbgAddr);
|
|
var aSymbol = this.findSymbol(dbgAddr, true);
|
|
if (aSymbol.length) {
|
|
var nDelta, sDelta, s;
|
|
if (aSymbol[0]) {
|
|
sDelta = "";
|
|
nDelta = dbgAddr.addr - aSymbol[1];
|
|
if (nDelta) sDelta = " + " + Str.toHexWord(nDelta);
|
|
s = aSymbol[0] + " (" + this.toStrOffset(aSymbol[1]) + ')' + sDelta;
|
|
if (fPrint) this.println(s);
|
|
sSymbol = s;
|
|
}
|
|
if (aSymbol.length > 4 && aSymbol[4]) {
|
|
sDelta = "";
|
|
nDelta = aSymbol[5] - dbgAddr.addr;
|
|
if (nDelta) sDelta = " - " + Str.toHexWord(nDelta);
|
|
s = aSymbol[4] + " (" + this.toStrOffset(aSymbol[5]) + ')' + sDelta;
|
|
if (fPrint) this.println(s);
|
|
if (!sSymbol) sSymbol = s;
|
|
}
|
|
} else {
|
|
if (fPrint) this.println("no symbols");
|
|
}
|
|
}
|
|
return sSymbol;
|
|
}
|
|
|
|
/**
|
|
* doMessages(asArgs)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {Array.<string>} asArgs
|
|
*/
|
|
doMessages(asArgs)
|
|
{
|
|
var m;
|
|
var fCriteria = null;
|
|
var sCategory = asArgs[1];
|
|
if (sCategory == '?') sCategory = undefined;
|
|
|
|
if (sCategory !== undefined) {
|
|
var bitsMessage = 0;
|
|
if (sCategory == "all") {
|
|
bitsMessage = (0xffffffff|0) & ~(MessagesPDP10.HALT | MessagesPDP10.KEYS | MessagesPDP10.LOG);
|
|
sCategory = null;
|
|
} else if (sCategory == "on") {
|
|
fCriteria = true;
|
|
sCategory = null;
|
|
} else if (sCategory == "off") {
|
|
fCriteria = false;
|
|
sCategory = null;
|
|
} else {
|
|
/*
|
|
* Internally, we use "key" instead of "keys", since the latter is a method on JavasScript objects,
|
|
* but externally, we allow the user to specify "keys"; "kbd" is also allowed as shorthand for "keyboard".
|
|
*/
|
|
if (sCategory == "keys") sCategory = "key";
|
|
if (sCategory == "kbd") sCategory = "keyboard";
|
|
for (m in MessagesPDP10.CATEGORIES) {
|
|
if (sCategory == m) {
|
|
bitsMessage = MessagesPDP10.CATEGORIES[m];
|
|
fCriteria = !!(this.bitsMessage & bitsMessage);
|
|
break;
|
|
}
|
|
}
|
|
if (!bitsMessage) {
|
|
this.println("unknown message category: " + sCategory);
|
|
return;
|
|
}
|
|
}
|
|
if (bitsMessage) {
|
|
if (asArgs[2] == "on") {
|
|
this.bitsMessage |= bitsMessage;
|
|
fCriteria = true;
|
|
}
|
|
else if (asArgs[2] == "off") {
|
|
this.bitsMessage &= ~bitsMessage;
|
|
fCriteria = false;
|
|
if (bitsMessage == MessagesPDP10.BUFFER) {
|
|
var i = this.aMessageBuffer.length >= 1000? this.aMessageBuffer.length - 1000 : 0;
|
|
while (i < this.aMessageBuffer.length) {
|
|
this.println(this.aMessageBuffer[i++]);
|
|
}
|
|
this.aMessageBuffer = [];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Display those message categories that match the current criteria (on or off)
|
|
*/
|
|
var n = 0;
|
|
var sCategories = "";
|
|
for (m in MessagesPDP10.CATEGORIES) {
|
|
if (!sCategory || sCategory == m) {
|
|
var bitMessage = MessagesPDP10.CATEGORIES[m];
|
|
var fEnabled = !!(this.bitsMessage & bitMessage);
|
|
if (fCriteria !== null && fCriteria != fEnabled) continue;
|
|
if (sCategories) sCategories += ',';
|
|
if (!(++n % 10)) sCategories += "\n\t"; // jshint ignore:line
|
|
/*
|
|
* Internally, we use "key" instead of "keys", since the latter is a method on JavasScript objects,
|
|
* but externally, we allow the user to specify "keys".
|
|
*/
|
|
if (m == "key") m = "keys";
|
|
sCategories += m;
|
|
}
|
|
}
|
|
|
|
if (sCategory === undefined) {
|
|
this.println("message commands:\n\tm [category] [on|off]\tturn categories on/off");
|
|
}
|
|
|
|
this.println((fCriteria !== null? (fCriteria? "messages on: " : "messages off: ") : "message categories:\n\t") + (sCategories || "none"));
|
|
|
|
this.historyInit(); // call this just in case MessagesPDP10.INT was turned on
|
|
}
|
|
|
|
/**
|
|
* doOptions(asArgs)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {Array.<string>} asArgs
|
|
*/
|
|
doOptions(asArgs)
|
|
{
|
|
switch (asArgs[1]) {
|
|
|
|
case "base":
|
|
if (asArgs[2]) {
|
|
var nBase = +asArgs[2];
|
|
if (nBase == 8 || nBase == 10 || nBase == 16) {
|
|
this.nBase = nBase;
|
|
} else {
|
|
this.println("invalid base: " + nBase);
|
|
break;
|
|
}
|
|
}
|
|
this.println("default base: " + this.nBase);
|
|
break;
|
|
|
|
case "cs":
|
|
var nCycles;
|
|
if (asArgs[3] !== undefined) nCycles = +asArgs[3]; // warning: decimal instead of hex conversion
|
|
switch (asArgs[2]) {
|
|
case "int":
|
|
this.cpu.nCyclesChecksumInterval = nCycles;
|
|
break;
|
|
case "start":
|
|
this.cpu.nCyclesChecksumStart = nCycles;
|
|
break;
|
|
case "stop":
|
|
this.cpu.nCyclesChecksumStop = nCycles;
|
|
break;
|
|
default:
|
|
this.println("unknown cs option");
|
|
return;
|
|
}
|
|
if (nCycles !== undefined) {
|
|
this.cpu.resetChecksum();
|
|
}
|
|
this.println("checksums " + (this.cpu.flags.checksum? "enabled" : "disabled"));
|
|
return;
|
|
|
|
case "sp":
|
|
if (asArgs[2] !== undefined) {
|
|
if (!this.cpu.setSpeed(+asArgs[2])) {
|
|
this.println("warning: using 1x multiplier, previous target not reached");
|
|
}
|
|
}
|
|
this.println("target speed: " + this.cpu.getSpeedTarget() + " (" + this.cpu.getSpeed() + "x)");
|
|
return;
|
|
|
|
default:
|
|
if (asArgs[1]) {
|
|
this.println("unknown option: " + asArgs[1]);
|
|
return;
|
|
}
|
|
/* falls through */
|
|
|
|
case "?":
|
|
this.println("debugger options:");
|
|
this.println("\tbase #\t\tset default base to #");
|
|
this.println("\tcs int #\tset checksum cycle interval to #");
|
|
this.println("\tcs start #\tset checksum cycle start count to #");
|
|
this.println("\tcs stop #\tset checksum cycle stop count to #");
|
|
this.println("\tsp #\t\tset speed multiplier to #");
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* doRegisters(asArgs, fInstruction)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {Array.<string>} [asArgs]
|
|
* @param {boolean} [fInstruction] (true to include the current instruction; default is true)
|
|
*/
|
|
doRegisters(asArgs, fInstruction)
|
|
{
|
|
if (asArgs && asArgs[1] == '?') {
|
|
this.println("register commands:");
|
|
this.println("\tr\tdump registers");
|
|
this.println("\trm\tdump misc registers");
|
|
this.println("\trx [#]\tset flag or register x to [#]");
|
|
return;
|
|
}
|
|
|
|
var cpu = this.cpu;
|
|
var fMisc = undefined;
|
|
if (fInstruction == null) fInstruction = true;
|
|
|
|
if (asArgs != null && asArgs.length > 1) {
|
|
var sReg = asArgs[1];
|
|
|
|
if (sReg == 'm') {
|
|
fMisc = true;
|
|
}
|
|
else {
|
|
var sValue = null;
|
|
var i = sReg.indexOf('=');
|
|
if (i > 0) {
|
|
sValue = sReg.substr(i + 1);
|
|
sReg = sReg.substr(0, i);
|
|
}
|
|
else if (asArgs.length > 2) {
|
|
sValue = asArgs[2];
|
|
}
|
|
else {
|
|
this.println("missing value for " + asArgs[1]);
|
|
return;
|
|
}
|
|
|
|
var value = this.parseExpression(sValue);
|
|
if (value === undefined) return;
|
|
|
|
var iReg = this.getRegIndex(sReg);
|
|
if (iReg < 0) {
|
|
this.println("unknown register: " + sReg);
|
|
return;
|
|
}
|
|
|
|
this.setRegValue(iReg, value);
|
|
|
|
this.cmp.updateDisplays();
|
|
this.println("updated registers:");
|
|
}
|
|
}
|
|
|
|
this.println(this.getRegDump(fMisc));
|
|
|
|
if (fInstruction) {
|
|
this.setAddr(this.dbgAddrCode, cpu.getPC());
|
|
this.doUnassemble(this.toStrAddr(this.dbgAddrCode));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* doRun(sCmd, sAddr, sOptions, fQuiet)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} sCmd
|
|
* @param {string|undefined} [sAddr]
|
|
* @param {string} [sOptions] (the rest of the breakpoint command-line)
|
|
* @param {boolean} [fQuiet]
|
|
*/
|
|
doRun(sCmd, sAddr, sOptions, fQuiet)
|
|
{
|
|
if (sCmd == "gt") {
|
|
this.fIgnoreNextCheckFault = true;
|
|
}
|
|
if (sAddr !== undefined) {
|
|
var dbgAddr = this.parseAddr(sAddr);
|
|
if (!dbgAddr) return;
|
|
this.parseAddrOptions(dbgAddr, sOptions);
|
|
this.setTempBreakpoint(dbgAddr);
|
|
}
|
|
this.startCPU(true, fQuiet);
|
|
}
|
|
|
|
/**
|
|
* doPrint(sCmd)
|
|
*
|
|
* NOTE: If the string to print is a quoted string, then we run it through replaceRegs(), so that
|
|
* you can take advantage of all the special replacement options used for software interrupt logging.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} sCmd
|
|
*/
|
|
doPrint(sCmd)
|
|
{
|
|
sCmd = Str.trim(sCmd);
|
|
var a = sCmd.match(/^(['"])(.*?)\1$/);
|
|
if (!a) {
|
|
this.parseExpression(sCmd, true);
|
|
} else {
|
|
if (a[2].length > 1) {
|
|
this.println(this.replaceRegs(a[2]));
|
|
} else {
|
|
this.printValue(null, a[2].charCodeAt(0));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* doStep(sCmd, sOption)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} [sCmd] "p" or "pr"
|
|
* @param {string} [sOption]
|
|
*/
|
|
doStep(sCmd, sOption)
|
|
{
|
|
var fCallStep = true;
|
|
var nRegs = (sCmd == "p"? 0 : (sCmd == "pr"? 1 : -1));
|
|
|
|
if (sOption == '?' || nRegs < 0) {
|
|
this.println("step commands:");
|
|
this.println("\tp\tstep over instruction");
|
|
this.println("\tpr\tstep over instruction with register update");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Set up the value for this.nStep (ie, 1 or 2) depending on whether the user wants
|
|
* a subsequent register dump ("pr") or not ("p").
|
|
*/
|
|
var nStep = 1 + nRegs;
|
|
|
|
if (!this.nStep) {
|
|
var dbgAddr = this.newAddr(this.cpu.getPC());
|
|
var opCode = this.getWord(dbgAddr);
|
|
|
|
if (this.nStep) {
|
|
this.setTempBreakpoint(dbgAddr);
|
|
if (!this.startCPU()) {
|
|
if (this.cmp) this.cmp.setFocus();
|
|
this.nStep = 0;
|
|
}
|
|
/*
|
|
* A successful run will ultimately call stop(), which will in turn call clearTempBreakpoint(),
|
|
* which will clear nStep, so there's your assurance that nStep will be reset. Now we may have
|
|
* stopped for reasons unrelated to the temporary breakpoint, but that's OK.
|
|
*/
|
|
} else {
|
|
this.doTrace(nRegs? "tr" : "t");
|
|
}
|
|
} else {
|
|
this.println("step in progress");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* getCall(dbgAddr)
|
|
*
|
|
* Given a possible return address (typically from the stack), look for a matching CALL (or INT) that
|
|
* immediately precedes that address.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {DbgAddrPDP10} dbgAddr
|
|
* @return {string|null} CALL instruction at or near dbgAddr, or null if none
|
|
*/
|
|
getCall(dbgAddr)
|
|
{
|
|
var sCall = null;
|
|
var addr = dbgAddr.addr;
|
|
var addrOrig = addr;
|
|
for (var n = 1; n <= 6 && !!addr; n++) {
|
|
if (n > 2) {
|
|
dbgAddr.addr = addr;
|
|
var s = this.getInstruction(dbgAddr);
|
|
if (s.indexOf("JSR") >= 0) {
|
|
/*
|
|
* Verify that the length of this call, when added to the address of the call, matches
|
|
* the original return address. We do this by getting the string index of the opcode bytes,
|
|
* subtracting that from the string index of the next space, and dividing that difference
|
|
* by two, to yield the length of the CALL (or INT) instruction, in bytes.
|
|
*/
|
|
var i = s.indexOf(' ');
|
|
var j = s.indexOf(' ', i+1);
|
|
if (addr + (j - i - 1)/2 == addrOrig) {
|
|
sCall = s;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
addr -= 2;
|
|
}
|
|
dbgAddr.addr = addrOrig;
|
|
return sCall;
|
|
}
|
|
|
|
/**
|
|
* doStackTrace(sCmd, sAddr)
|
|
*
|
|
* Use "k" for a normal stack trace and "ks" for a stack trace with symbolic info.
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} [sCmd]
|
|
* @param {string} [sAddr] (not used yet)
|
|
*/
|
|
doStackTrace(sCmd, sAddr)
|
|
{
|
|
if (sAddr == '?') {
|
|
this.println("stack trace commands:");
|
|
this.println("\tk\tshow frame addresses");
|
|
this.println("\tks\tshow symbol information");
|
|
return;
|
|
}
|
|
|
|
var nFrames = 10, cFrames = 0;
|
|
var dbgAddrCall = this.newAddr();
|
|
var dbgAddrStack = this.newAddr(/*this.cpu.getSP()*/);
|
|
this.println("stack trace for " + this.toStrAddr(dbgAddrStack));
|
|
|
|
while (cFrames < nFrames) {
|
|
var sCall = null, sCallPrev = null, cTests = 256;
|
|
while ((dbgAddrStack.addr >>> 0) < 0x10000) {
|
|
dbgAddrCall.addr = this.getWord(dbgAddrStack, 2);
|
|
/*
|
|
* Because we're using the auto-increment feature of getWord(), and because that will automatically
|
|
* wrap the offset around the end of the segment, we must also check the addr property to detect the wrap.
|
|
*/
|
|
if (dbgAddrStack.addr == null || !cTests--) break;
|
|
if (dbgAddrCall.addr & 0x1) continue; // an odd address on the PDP-11 is not a valid instruction boundary
|
|
sCall = this.getCall(dbgAddrCall);
|
|
if (sCall) break;
|
|
}
|
|
/*
|
|
* The sCallPrev check eliminates duplicate sequential calls, which are usually (but not always)
|
|
* indicative of a false positive, in which case the previous call is probably bogus as well, but
|
|
* at least we won't duplicate that mistake. Of course, there are always exceptions, recursion
|
|
* being one of them, but it's rare that we're debugging recursive code.
|
|
*/
|
|
if (!sCall || sCall == sCallPrev) break;
|
|
var sSymbol = null;
|
|
if (sCmd == "ks") {
|
|
var a = sCall.match(/[0-9A-F]+$/);
|
|
if (a) sSymbol = this.doList(a[0]);
|
|
}
|
|
sCall = Str.pad(sCall, 50) + " ;" + (sSymbol || "stack=" + this.toStrAddr(dbgAddrStack)); // + " return=" + this.toStrAddr(dbgAddrCall));
|
|
this.println(sCall);
|
|
sCallPrev = sCall;
|
|
cFrames++;
|
|
}
|
|
if (!cFrames) this.println("no return addresses found");
|
|
}
|
|
|
|
/**
|
|
* doTrace(sCmd, sCount)
|
|
*
|
|
* The "t" and "tr" commands interpret the count as a number of instructions, and since
|
|
* we call the Debugger's stepCPU() for each iteration, a single instruction includes
|
|
* any/all prefixes; the CPU's stepCPU() treats prefixes as discrete operations. The only
|
|
* difference between "t" and "tr": the former displays only the next instruction, while
|
|
* the latter also displays the (updated) registers.
|
|
*
|
|
* The "tc" command interprets the count as a number of cycles rather than instructions,
|
|
* allowing you to quickly execute large chunks of instructions with a single command; it
|
|
* doesn't display anything until the the chunk has finished. "tc 1" is also a useful
|
|
* command in that it doesn't inhibit interrupts like "t" or "tr" does.
|
|
*
|
|
* However, generally a more useful command is "bn", which allows you to break after some
|
|
* number of instructions have been executed (as opposed to some number of cycles).
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} [sCmd] ("t", "tc", or "tr")
|
|
* @param {string} [sCount] # of instructions to step
|
|
*/
|
|
doTrace(sCmd, sCount)
|
|
{
|
|
if (sCount == '?') {
|
|
this.println("trace commands:");
|
|
this.println("\tt [#]\ttrace # instructions");
|
|
this.println("\ttr [#]\ttrace # instructions with register updates");
|
|
this.println("\ttc [#]\ttrace # cycles");
|
|
this.println("note: bn [#] breaks after # instructions without updates");
|
|
return;
|
|
}
|
|
|
|
var dbg = this;
|
|
var fRegs = (sCmd != "t");
|
|
var nCount = this.parseValue(sCount, null, true) || 1;
|
|
|
|
/*
|
|
* We used to set nCycles to 1 when a count > 1 was specified, because nCycles set
|
|
* to 0 used to mean "execute the next instruction without checking for interrupts".
|
|
* Well, this machine's stepCPU() doesn't do that; it ALWAYS checks for interrupts,
|
|
* so we should leave nCycles set to 0, so that if an interrupt is dispatched, we will
|
|
* get to see the first instruction of the interrupt handler.
|
|
*/
|
|
var nCycles = 0; // (nCount == 1? 0 : 1);
|
|
|
|
if (sCmd == "tc") {
|
|
nCycles = nCount;
|
|
nCount = 1;
|
|
}
|
|
this.sCmdTracePrev = sCmd;
|
|
|
|
Web.onCountRepeat(
|
|
nCount,
|
|
function onCountStep() {
|
|
return dbg.setBusy(true) && dbg.stepCPU(nCycles, fRegs, false);
|
|
},
|
|
function onCountStepComplete() {
|
|
/*
|
|
* We explicitly called stepCPU() with fUpdateDisplays set to false, because repeatedly
|
|
* calling updateDisplays() can be very slow, especially if a Control Panel is present with
|
|
* displayLiveRegs enabled, so once the repeat count has been exhausted, we must perform
|
|
* a final updateDisplays().
|
|
*/
|
|
if (dbg.panel) dbg.panel.stop();
|
|
dbg.cmp.updateDisplays(-1);
|
|
dbg.setBusy(false);
|
|
}
|
|
);
|
|
}
|
|
|
|
/**
|
|
* doUnassemble(sAddr, sAddrEnd, nLines)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} [sAddr]
|
|
* @param {string} [sAddrEnd]
|
|
* @param {number} [nLines]
|
|
*/
|
|
doUnassemble(sAddr, sAddrEnd, nLines)
|
|
{
|
|
var dbgAddr = this.parseAddr(sAddr, this.dbgAddrCode);
|
|
if (!dbgAddr) return;
|
|
|
|
if (nLines === undefined) nLines = 1;
|
|
|
|
var nBytes = 0x100;
|
|
if (sAddrEnd !== undefined) {
|
|
|
|
if (sAddrEnd.charAt(0) == 'l') {
|
|
var n = this.parseValue(sAddrEnd.substr(1));
|
|
if (n != null) nLines = n;
|
|
}
|
|
else {
|
|
var dbgAddrEnd = this.parseAddr(sAddrEnd);
|
|
if (!dbgAddrEnd || dbgAddrEnd.addr < dbgAddr.addr) return;
|
|
|
|
nBytes = dbgAddrEnd.addr - dbgAddr.addr;
|
|
if (!DEBUG && nBytes > 0x100) {
|
|
/*
|
|
* Limiting the amount of disassembled code to 256 bytes in non-DEBUG builds is partly to
|
|
* prevent the user from wedging the browser by dumping too many lines, but also a recognition
|
|
* that, in non-DEBUG builds, this.println() keeps print output buffer truncated to 8Kb anyway.
|
|
*/
|
|
this.println("range too large");
|
|
return;
|
|
}
|
|
nLines = -1;
|
|
}
|
|
}
|
|
|
|
var nPrinted = 0;
|
|
|
|
while (nBytes > 0 && nLines--) {
|
|
|
|
var nSequence = (this.isBusy(false) || this.nStep)? this.nCycles : null;
|
|
var sComment = (nSequence != null? "cycles" : null);
|
|
var aSymbol = this.findSymbol(dbgAddr);
|
|
|
|
var addr = dbgAddr.addr; // we snap dbgAddr.addr *after* calling findSymbol(), which re-evaluates it
|
|
|
|
if (aSymbol[0] && nLines) {
|
|
if (!nPrinted && nLines || aSymbol[0].indexOf('+') < 0) {
|
|
var sLabel = aSymbol[0] + ':';
|
|
if (aSymbol[2]) sLabel += ' ' + aSymbol[2];
|
|
this.println(sLabel);
|
|
}
|
|
}
|
|
if (aSymbol[3]) {
|
|
sComment = aSymbol[3];
|
|
nSequence = null;
|
|
}
|
|
this.copyAddr(this.dbgAddrAssemble, dbgAddr);
|
|
this.println(this.getInstruction(dbgAddr, sComment, nSequence));
|
|
nBytes -= dbgAddr.addr - addr;
|
|
nPrinted++;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* splitArgs(sCmd)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} sCmd
|
|
* @return {Array.<string>}
|
|
*/
|
|
splitArgs(sCmd)
|
|
{
|
|
var asArgs = sCmd.replace(/ +/g, ' ').split(' ');
|
|
asArgs[0] = asArgs[0].toLowerCase();
|
|
if (asArgs && asArgs.length) {
|
|
var s0 = asArgs[0];
|
|
var ch0 = s0.charAt(0);
|
|
for (var i = 1; i < s0.length; i++) {
|
|
var ch = s0.charAt(i);
|
|
if (ch0 == '?' || ch0 == 'r' || ch < 'a' || ch > 'z') {
|
|
asArgs[0] = s0.substr(i);
|
|
asArgs.unshift(s0.substr(0, i));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return asArgs;
|
|
}
|
|
|
|
/**
|
|
* doCommand(sCmd, fQuiet)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} sCmd
|
|
* @param {boolean} [fQuiet]
|
|
* @return {boolean} true if command processed, false if unrecognized
|
|
*/
|
|
doCommand(sCmd, fQuiet)
|
|
{
|
|
var result = true;
|
|
|
|
try {
|
|
if (DEBUG && sCmd == "test") {
|
|
this.doTest();
|
|
return true;
|
|
}
|
|
if (!sCmd.length || sCmd == "end") {
|
|
if (this.fAssemble) {
|
|
this.println("ended assemble at " + this.toStrAddr(this.dbgAddrAssemble));
|
|
this.fAssemble = false;
|
|
}
|
|
sCmd = "";
|
|
}
|
|
else if (!fQuiet) {
|
|
this.println(DebuggerPDP10.PROMPT + sCmd);
|
|
}
|
|
|
|
var ch = sCmd.charAt(0);
|
|
if (ch == '"' || ch == "'") return true;
|
|
|
|
/*
|
|
* Zap the previous message buffer to ensure the new command's output is not tossed out as a repeat.
|
|
*/
|
|
this.sMessagePrev = null;
|
|
|
|
/*
|
|
* I've relaxed the !isBusy() requirement, to maximize our ability to issue Debugger commands externally.
|
|
*/
|
|
if (this.isReady() /* && !this.isBusy(true) */ && sCmd.length > 0) {
|
|
|
|
if (this.fAssemble) {
|
|
sCmd = "a " + this.toStrAddr(this.dbgAddrAssemble) + ' ' + sCmd;
|
|
}
|
|
|
|
var fError = false;
|
|
var asArgs = this.splitArgs(sCmd);
|
|
|
|
switch (asArgs[0].charAt(0)) {
|
|
case 'a':
|
|
this.doAssemble(asArgs);
|
|
break;
|
|
case 'b':
|
|
this.doBreak(asArgs[0], asArgs[1], sCmd);
|
|
break;
|
|
case 'c':
|
|
this.doClear(asArgs[0]);
|
|
break;
|
|
case 'd':
|
|
if (!COMPILED && sCmd == "debug") {
|
|
window.DEBUG = true;
|
|
this.println("DEBUG checks on");
|
|
break;
|
|
}
|
|
this.doDump(asArgs);
|
|
break;
|
|
case 'e':
|
|
if (asArgs[0] == "else") break;
|
|
this.doEdit(asArgs);
|
|
break;
|
|
case 'g':
|
|
this.doRun(asArgs[0], asArgs[1], sCmd, fQuiet);
|
|
break;
|
|
case 'h':
|
|
this.doHalt(fQuiet);
|
|
break;
|
|
case 'i':
|
|
if (asArgs[0] == "if") {
|
|
if (!this.doIf(sCmd.substr(2), fQuiet)) {
|
|
result = false;
|
|
}
|
|
break;
|
|
}
|
|
fError = true;
|
|
break;
|
|
case 'k':
|
|
this.doStackTrace(asArgs[0], asArgs[1]);
|
|
break;
|
|
case 'l':
|
|
if (asArgs[0] == "ln") {
|
|
this.doList(asArgs[1], true);
|
|
break;
|
|
}
|
|
fError = true;
|
|
break;
|
|
case 'm':
|
|
this.doMessages(asArgs);
|
|
break;
|
|
case 'p':
|
|
if (asArgs[0] == "print") {
|
|
this.doPrint(sCmd.substr(5));
|
|
break;
|
|
}
|
|
this.doStep(asArgs[0], asArgs[1]);
|
|
break;
|
|
case 'r':
|
|
if (sCmd == "reset") {
|
|
if (this.cmp) this.cmp.reset();
|
|
break;
|
|
}
|
|
this.doRegisters(asArgs);
|
|
break;
|
|
case 's':
|
|
this.doOptions(asArgs);
|
|
break;
|
|
case 't':
|
|
this.doTrace(asArgs[0], asArgs[1]);
|
|
break;
|
|
case 'u':
|
|
this.doUnassemble(asArgs[1], asArgs[2], 8);
|
|
break;
|
|
case 'v':
|
|
if (asArgs[0] == "var") {
|
|
if (!this.doVar(sCmd.substr(3))) {
|
|
result = false;
|
|
}
|
|
break;
|
|
}
|
|
if (asArgs[0] == "ver") {
|
|
this.println((PDP10.APPNAME || "PDP10") + " version " + (XMLVERSION || PDP10.APPVERSION) + " (" + this.cpu.model + (PDP10.COMPILED? ",RELEASE" : (PDP10.DEBUG? ",DEBUG" : ",NODEBUG")) + ')');
|
|
this.println(Web.getUserAgent());
|
|
break;
|
|
}
|
|
fError = true;
|
|
break;
|
|
case '?':
|
|
if (asArgs[1]) {
|
|
this.doPrint(sCmd.substr(1));
|
|
break;
|
|
}
|
|
this.doHelp();
|
|
break;
|
|
case 'n':
|
|
if (!COMPILED && sCmd == "nodebug") {
|
|
window.DEBUG = false;
|
|
this.println("DEBUG checks off");
|
|
break;
|
|
}
|
|
if (this.doInfo(asArgs)) break;
|
|
/* falls through */
|
|
default:
|
|
fError = true;
|
|
break;
|
|
}
|
|
if (fError) {
|
|
this.println("unknown command: " + sCmd);
|
|
result = false;
|
|
}
|
|
}
|
|
} catch(e) {
|
|
this.println("Debugger " + (e.stack || e.message));
|
|
result = false;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* doCommands(sCmds, fSave)
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
* @param {string} sCmds
|
|
* @param {boolean} [fSave]
|
|
* @return {boolean} true if all commands processed, false if not
|
|
*/
|
|
doCommands(sCmds, fSave)
|
|
{
|
|
var a = this.parseCommand(sCmds, fSave);
|
|
for (var s in a) {
|
|
if (!this.doCommand(a[+s])) return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* doTest()
|
|
*
|
|
* This function exercises the disassembler by performing look-ups for all possible operation codes
|
|
* and displaying the results. It's not intended to be included in the compiled version of the Debugger
|
|
* (DEBUG only).
|
|
*
|
|
* @this {DebuggerPDP10}
|
|
*/
|
|
doTest()
|
|
{
|
|
if (DEBUG) {
|
|
var ops = {}, aOpXXX = [];
|
|
var op, opXXX, opCode, sOperation;
|
|
for (op = 0o00000; op <= 0o77774; op += 4) {
|
|
opCode = op * Math.pow(2, 21);
|
|
sOperation = this.findInstruction(opCode, false);
|
|
if (!sOperation) continue;
|
|
if (ops[sOperation] === undefined) {
|
|
ops[sOperation] = op;
|
|
} else {
|
|
ops[sOperation] &= op;
|
|
}
|
|
opXXX = op >> 6;
|
|
if (!aOpXXX[opXXX]) {
|
|
aOpXXX[opXXX] = sOperation;
|
|
} else if (aOpXXX[opXXX] != sOperation) {
|
|
aOpXXX[opXXX] = "XXX";
|
|
}
|
|
}
|
|
for (sOperation in ops) {
|
|
op = ops[sOperation];
|
|
this.println(Str.pad(sOperation + ":", 8) + this.toStrWord(op * Math.pow(2, 21)));
|
|
//
|
|
// The following code leveraged the disassembler to generate opcode handlers.
|
|
//
|
|
// this.println("/**");
|
|
// this.println(" * op" + sOperation + "(" + this.toStrWord(op * Math.pow(2, 21)) + ")");
|
|
// this.println(" *");
|
|
// this.println(" * @this {CPUStatePDP10}");
|
|
// this.println(" * @param {number} opCode");
|
|
// this.println(" */");
|
|
// this.println("PDP10.op" + sOperation + " = function(opCode)");
|
|
// this.println("{");
|
|
// this.println(" this.opUndefined(op);");
|
|
// this.println("};\n");
|
|
}
|
|
//
|
|
// The following code generated an opcode dispatch table.
|
|
//
|
|
// this.println("PDP10.aOpXXX = [");
|
|
// for (opXXX = 0o000; opXXX <= 0o777; opXXX++) {
|
|
// sOperation = aOpXXX[opXXX];
|
|
// sOperation = sOperation? (" PDP10.op" + sOperation + ",") : " PDP10.opUndefined,";
|
|
// sOperation = Str.pad(sOperation, 32);
|
|
// sOperation += "// " + Str.toOct(opXXX, 3, true) + "xxx";
|
|
// this.println(sOperation);
|
|
// }
|
|
// this.println("];");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* DebuggerPDP10.init()
|
|
*
|
|
* This function operates on every HTML element of class "debugger", extracting the
|
|
* JSON-encoded parameters for the Debugger constructor from the element's "data-value"
|
|
* attribute, invoking the constructor to create a Debugger component, and then binding
|
|
* any associated HTML controls to the new component.
|
|
*/
|
|
static init()
|
|
{
|
|
var aeDbg = Component.getElementsByClass(document, PDP10.APPCLASS, "debugger");
|
|
for (var iDbg = 0; iDbg < aeDbg.length; iDbg++) {
|
|
var eDbg = aeDbg[iDbg];
|
|
var parmsDbg = Component.getComponentParms(eDbg);
|
|
var dbg = new DebuggerPDP10(parmsDbg);
|
|
Component.bindComponentControls(dbg, eDbg, PDP10.APPCLASS);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (DEBUGGER) {
|
|
|
|
/*
|
|
* NOTE: Every DebuggerPDP10 property from here to the first prototype function definition (initBus()) is
|
|
* considered a "class constant"; most of them use our "all-caps" convention (and all of them SHOULD, but
|
|
* that wouldn't help us catch any bugs).
|
|
*
|
|
* Technically, all of them should ALSO be preceded by a "@const" annotation, but that's a lot of work and it
|
|
* really clutters the code. I wish the Closure Compiler had a way to annotate every definition with a given
|
|
* section with a single annotation....
|
|
*/
|
|
|
|
DebuggerPDP10.COMMANDS = {
|
|
'?': "help/print",
|
|
'a [#]': "assemble", // TODO: Implement this command someday
|
|
'b [#]': "breakpoint", // multiple variations (use b? to list them)
|
|
'c': "clear output",
|
|
'd [#]': "dump memory", // additional syntax: d [#] [l#], where l# is a number of bytes to dump
|
|
'e [#]': "edit memory",
|
|
'g [#]': "go [to #]",
|
|
'h': "halt",
|
|
'if': "eval expression",
|
|
'int [#]': "request interrupt",
|
|
'k': "stack trace",
|
|
"ln": "list nearest symbol(s)",
|
|
'm': "messages",
|
|
'p': "step over", // other variations: pr (step and dump registers)
|
|
'print': "print expression",
|
|
'r': "dump/set registers",
|
|
'reset': "reset machine",
|
|
's': "set options",
|
|
't [#]': "trace", // other variations: tr (trace and dump registers)
|
|
'u [#]': "unassemble",
|
|
'var': "assign variable",
|
|
'ver': "print version"
|
|
};
|
|
|
|
/*
|
|
* CPU opcode IDs
|
|
*/
|
|
DebuggerPDP10.OPS = {
|
|
NONE: 0,
|
|
HLL: 1, HLLZ: 2, HLLO: 3, HLLE: 4,
|
|
HRL: 5, HRLZ: 6, HRLO: 7, HRLE: 8,
|
|
HRR: 9, HRRZ: 10, HRRO: 11, HRRE: 12,
|
|
HLR: 13, HLRZ: 14, HLRO: 15, HLRE: 16,
|
|
MOVE: 17, MOVS: 18, MOVN: 19, MOVM: 20,
|
|
EXCH: 21, BLT: 22, PUSH: 23, POP: 24,
|
|
LDB: 25, DPB: 26, IBP: 27, ILDB: 28,
|
|
IDPB: 29, SETZ: 30, SETO: 31, SETA: 32,
|
|
SETCA: 33, SETM: 34, SETCM: 35, AND: 36,
|
|
ANDCA: 37, ANDCM: 38, ANDCB: 39, IOR: 40,
|
|
ORCA: 41, ORCM: 42, ORCB: 43, XOR: 44,
|
|
EQV: 45, LSH: 46, LSHC: 47, ROT: 48,
|
|
ROTC: 49, ADD: 50, SUB: 51, MUL: 52,
|
|
IMUL: 53, DIV: 54, IDIV: 55, ASH: 56,
|
|
ASHC: 57, FSC: 58, FADR: 59, FSBR: 60,
|
|
FMPR: 61, FDVR: 62, DFN: 63, UFA: 64,
|
|
FAD: 65, FSB: 66, FMP: 67, FDV: 68,
|
|
AOBJP: 69, AOBJN: 70, CAI: 71, CAM: 72,
|
|
JUMP: 73, SKIP: 74, AOJ: 75, AOS: 76,
|
|
SOJ: 77, SOS: 78, TR: 79, TL: 80,
|
|
TD: 81, TS: 82, XCT: 83, JFFO: 84,
|
|
JFCL: 85, JSR: 86, JSP: 87, JRST: 88,
|
|
JSA: 89, JRA: 90, PUSHJ: 91, POPJ: 92,
|
|
BLKI: 93, DATAI: 94, BLKO: 95, DATAO: 96,
|
|
CONO: 97, CONI: 98, CONSZ: 99, CONSO: 100,
|
|
UUO: 101, JOV: 102, JCRY0: 103, JCRY1: 104,
|
|
JCRY: 105, JFOV: 106, HALT: 107, JRSTF: 108,
|
|
JEN: 109
|
|
};
|
|
|
|
/*
|
|
* CPU opcode names, indexed by CPU opcode ordinal (above)
|
|
*/
|
|
DebuggerPDP10.OPNAMES = [
|
|
".WORD",
|
|
"HLL", "HLLZ", "HLLO", "HLLE",
|
|
"HRL", "HRLZ", "HRLO", "HRLE",
|
|
"HRR", "HRRZ", "HRRO", "HRRE",
|
|
"HLR", "HLRZ", "HLRO", "HLRE",
|
|
"MOVE", "MOVS", "MOVN", "MOVM",
|
|
"EXCH", "BLT", "PUSH", "POP",
|
|
"LDB", "DPB", "IBP", "ILDB",
|
|
"IDPB", "SETZ", "SETO", "SETA",
|
|
"SETCA", "SETM", "SETCM", "AND",
|
|
"ANDCA", "ANDCM", "ANDCB", "IOR",
|
|
"ORCA", "ORCM", "ORCB", "XOR",
|
|
"EQV", "LSH", "LSHC", "ROT",
|
|
"ROTC", "ADD", "SUB", "MUL",
|
|
"IMUL", "DIV", "IDIV", "ASH",
|
|
"ASHC", "FSC", "FADR", "FSBR",
|
|
"FMPR", "FDVR", "DFN", "UFA",
|
|
"FAD", "FSB", "FMP", "FDV",
|
|
"AOBJP", "AOBJN", "CAI", "CAM",
|
|
"JUMP", "SKIP", "AOJ", "AOS",
|
|
"SOJ", "SOS", "TR", "TL",
|
|
"TD", "TS", "XCT", "JFFO",
|
|
"JFCL", "JSR", "JSP", "JRST",
|
|
"JSA", "JRA", "PUSHJ", "POPJ",
|
|
"BLKI", "DATAI", "BLKO", "DATAO",
|
|
"CONO", "CONI", "CONSZ", "CONSO",
|
|
"UUO", "JOV", "JCRY0", "JCRY1",
|
|
"JCRY", "JFOV", "HALT", 'JRSTF',
|
|
"JEN"
|
|
];
|
|
|
|
DebuggerPDP10.REGS = {
|
|
PC: 0,
|
|
RA: 1,
|
|
EA: 2,
|
|
C0: 3, // single-bit "register" representing the Carry 0 flag
|
|
C1: 4, // single-bit "register" representing the Carry 1 flag
|
|
OV: 5, // single-bit "register" representing the Overflow flag
|
|
ND: 6, // single-bit "register" representing the No Divide flag
|
|
PD: 7, // single-bit "register" representing the Pushdown Overflow flag
|
|
};
|
|
|
|
DebuggerPDP10.REGNAMES = [
|
|
"PC", "RA", "EA", "C0", "C1", "OV", "ND", "PD"
|
|
];
|
|
|
|
/*
|
|
* OPTABLE is a collection of masks, and each mask refers to a collection of opcode
|
|
* patterns associated with that mask; the disassembler applies each mask to the opcode,
|
|
* and when a masked opcode matches one of the associated patterns, the corresponding
|
|
* instruction is considered a match.
|
|
*/
|
|
DebuggerPDP10.OPTABLE = {
|
|
[PDP10.OPCODE.OPUUO]: { // 0o70000
|
|
0o00000: DebuggerPDP10.OPS.UUO
|
|
},
|
|
[PDP10.OPCODE.OPMASK]: { // 0o77700
|
|
0o13000: DebuggerPDP10.OPS.UFA,
|
|
0o13100: DebuggerPDP10.OPS.DFN,
|
|
0o13200: DebuggerPDP10.OPS.FSC,
|
|
0o13300: DebuggerPDP10.OPS.IBP,
|
|
0o13400: DebuggerPDP10.OPS.ILDB,
|
|
0o13500: DebuggerPDP10.OPS.LDB,
|
|
0o13600: DebuggerPDP10.OPS.IDPB,
|
|
0o13700: DebuggerPDP10.OPS.DPB,
|
|
0o24000: DebuggerPDP10.OPS.ASH,
|
|
0o24100: DebuggerPDP10.OPS.ROT,
|
|
0o24200: DebuggerPDP10.OPS.LSH,
|
|
0o24300: DebuggerPDP10.OPS.JFFO,
|
|
0o24400: DebuggerPDP10.OPS.ASHC,
|
|
0o24500: DebuggerPDP10.OPS.ROTC,
|
|
0o24600: DebuggerPDP10.OPS.LSHC,
|
|
0o25000: DebuggerPDP10.OPS.EXCH,
|
|
0o25100: DebuggerPDP10.OPS.BLT,
|
|
0o25200: DebuggerPDP10.OPS.AOBJP,
|
|
0o25300: DebuggerPDP10.OPS.AOBJN,
|
|
0o25400: DebuggerPDP10.OPS.JRST, // includes HALT, JRSTF, and JEN
|
|
0o25500: DebuggerPDP10.OPS.JFCL, // includes JOV, JCRY0, JCRY1, JCRY, and JFOV
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0o25600: DebuggerPDP10.OPS.XCT,
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0o26000: DebuggerPDP10.OPS.PUSHJ,
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0o26100: DebuggerPDP10.OPS.PUSH,
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0o26200: DebuggerPDP10.OPS.POP,
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0o26300: DebuggerPDP10.OPS.POPJ,
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|
0o26400: DebuggerPDP10.OPS.JSR,
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0o26500: DebuggerPDP10.OPS.JSP,
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0o26600: DebuggerPDP10.OPS.JSA,
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0o26700: DebuggerPDP10.OPS.JRA,
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|
},
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|
[PDP10.OPCODE.OPMODE]: { // 0o77400
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|
0o14000: DebuggerPDP10.OPS.FAD,
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0o14400: DebuggerPDP10.OPS.FADR,
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|
0o15000: DebuggerPDP10.OPS.FSB,
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|
0o15400: DebuggerPDP10.OPS.FSBR,
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|
0o16000: DebuggerPDP10.OPS.FMP,
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|
0o16400: DebuggerPDP10.OPS.FMPR,
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|
0o17000: DebuggerPDP10.OPS.FDV,
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|
0o17400: DebuggerPDP10.OPS.FDVR,
|
|
0o20000: DebuggerPDP10.OPS.MOVE,
|
|
0o20400: DebuggerPDP10.OPS.MOVS,
|
|
0o21000: DebuggerPDP10.OPS.MOVN,
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|
0o21400: DebuggerPDP10.OPS.MOVM,
|
|
0o22000: DebuggerPDP10.OPS.IMUL,
|
|
0o22400: DebuggerPDP10.OPS.MUL,
|
|
0o23000: DebuggerPDP10.OPS.IDIV,
|
|
0o23400: DebuggerPDP10.OPS.DIV,
|
|
0o27000: DebuggerPDP10.OPS.ADD,
|
|
0o27400: DebuggerPDP10.OPS.SUB,
|
|
0o40000: DebuggerPDP10.OPS.SETZ, // MACRO alias: CLEAR
|
|
0o40400: DebuggerPDP10.OPS.AND,
|
|
0o41000: DebuggerPDP10.OPS.ANDCA,
|
|
0o41400: DebuggerPDP10.OPS.SETM,
|
|
0o42000: DebuggerPDP10.OPS.ANDCM,
|
|
0o42400: DebuggerPDP10.OPS.SETA,
|
|
0o43000: DebuggerPDP10.OPS.XOR,
|
|
0o43400: DebuggerPDP10.OPS.IOR, // MACRO alias: OR
|
|
0o44000: DebuggerPDP10.OPS.ANDCB,
|
|
0o44400: DebuggerPDP10.OPS.EQV,
|
|
0o45000: DebuggerPDP10.OPS.SETCA,
|
|
0o45400: DebuggerPDP10.OPS.ORCA,
|
|
0o46000: DebuggerPDP10.OPS.SETCM,
|
|
0o46400: DebuggerPDP10.OPS.ORCM,
|
|
0o47000: DebuggerPDP10.OPS.ORCB,
|
|
0o47400: DebuggerPDP10.OPS.SETO,
|
|
0o50000: DebuggerPDP10.OPS.HLL,
|
|
0o50400: DebuggerPDP10.OPS.HRL,
|
|
0o51000: DebuggerPDP10.OPS.HLLZ,
|
|
0o51400: DebuggerPDP10.OPS.HRLZ,
|
|
0o52000: DebuggerPDP10.OPS.HLLO,
|
|
0o52400: DebuggerPDP10.OPS.HRLO,
|
|
0o53000: DebuggerPDP10.OPS.HLLE,
|
|
0o53400: DebuggerPDP10.OPS.HRLE,
|
|
0o54000: DebuggerPDP10.OPS.HRR,
|
|
0o54400: DebuggerPDP10.OPS.HLR,
|
|
0o55000: DebuggerPDP10.OPS.HRRZ,
|
|
0o55400: DebuggerPDP10.OPS.HLRZ,
|
|
0o56000: DebuggerPDP10.OPS.HRRO,
|
|
0o56400: DebuggerPDP10.OPS.HLRO,
|
|
0o57000: DebuggerPDP10.OPS.HRRE,
|
|
0o57400: DebuggerPDP10.OPS.HLRE
|
|
},
|
|
[PDP10.OPCODE.OPCOMP]: { // 0o77000
|
|
0o30000: DebuggerPDP10.OPS.CAI,
|
|
0o31000: DebuggerPDP10.OPS.CAM,
|
|
0o32000: DebuggerPDP10.OPS.JUMP,
|
|
0o33000: DebuggerPDP10.OPS.SKIP,
|
|
0o34000: DebuggerPDP10.OPS.AOJ,
|
|
0o35000: DebuggerPDP10.OPS.AOS,
|
|
0o36000: DebuggerPDP10.OPS.SOJ,
|
|
0o37000: DebuggerPDP10.OPS.SOS,
|
|
},
|
|
[PDP10.OPCODE.OPTEST]: { // 0o71100
|
|
0o60000: DebuggerPDP10.OPS.TR,
|
|
0o60100: DebuggerPDP10.OPS.TL,
|
|
0o61000: DebuggerPDP10.OPS.TD,
|
|
0o61100: DebuggerPDP10.OPS.TS,
|
|
},
|
|
[PDP10.OPCODE.OPIO]: { // 0o70034
|
|
0o70000: DebuggerPDP10.OPS.BLKI,
|
|
0o70004: DebuggerPDP10.OPS.DATAI,
|
|
0o70010: DebuggerPDP10.OPS.BLKO,
|
|
0o70014: DebuggerPDP10.OPS.DATAO,
|
|
0o70020: DebuggerPDP10.OPS.CONO,
|
|
0o70024: DebuggerPDP10.OPS.CONI,
|
|
0o70030: DebuggerPDP10.OPS.CONSZ,
|
|
0o70034: DebuggerPDP10.OPS.CONSO
|
|
}
|
|
};
|
|
|
|
DebuggerPDP10.OPMODES = ["", "I", "M", "S"];
|
|
DebuggerPDP10.OPCOMPS = ["", "L", "E", "LE", "A", "GE", "N", "G"];
|
|
DebuggerPDP10.OPTESTS = ["N", "NE", "NA", "NN", "Z", "ZE", "ZA", "ZN", "C", "CE", "CA", "CN", "O", "OE", "OA", "ON"];
|
|
|
|
/*
|
|
* Apparently, DEC's MACRO program permits "JFCL xxx" (with a single argument) as an alternate for "JFCL 0,xxx"
|
|
* (which in turn is long-hand for "No-op", since JFCL with 0 does nothing).
|
|
*/
|
|
DebuggerPDP10.JFCL = {
|
|
0o00: DebuggerPDP10.OPS.JFCL,
|
|
0o10: DebuggerPDP10.OPS.JOV,
|
|
0o04: DebuggerPDP10.OPS.JCRY0,
|
|
0o02: DebuggerPDP10.OPS.JCRY1,
|
|
0o06: DebuggerPDP10.OPS.JCRY,
|
|
0o01: DebuggerPDP10.OPS.JFOV
|
|
};
|
|
|
|
DebuggerPDP10.JRST = {
|
|
0o00: DebuggerPDP10.OPS.JRST,
|
|
0o04: DebuggerPDP10.OPS.HALT,
|
|
0o02: DebuggerPDP10.OPS.JRSTF,
|
|
0o12: DebuggerPDP10.OPS.JEN
|
|
};
|
|
|
|
DebuggerPDP10.ALTOPS = [
|
|
DebuggerPDP10.JFCL, DebuggerPDP10.JRST
|
|
];
|
|
|
|
DebuggerPDP10.HISTORY_LIMIT = DEBUG? 100000 : 1000;
|
|
|
|
DebuggerPDP10.PROMPT = ">> ";
|
|
|
|
/*
|
|
* Initialize every Debugger module on the page (as IF there's ever going to be more than one ;-))
|
|
*/
|
|
Web.onInit(DebuggerPDP10.init);
|
|
|
|
} // endif DEBUGGER
|
|
|
|
if (NODE) module.exports = DebuggerPDP10;
|