mirror of https://github.com/stella-emu/stella.git
99 lines
2.6 KiB
C++
99 lines
2.6 KiB
C++
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//============================================================================
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//
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// SSSS tt lll lll
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// SS SS tt ll ll
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// SS tttttt eeee ll ll aaaa
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// SSSS tt ee ee ll ll aa
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// SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator"
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// SS SS tt ee ll ll aa aa
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// SSSS ttt eeeee llll llll aaaaa
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//
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// Copyright (c) 1995-2019 by Bradford W. Mott, Stephen Anthony
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// and the Stella Team
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//
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// See the file "License.txt" for information on usage and redistribution of
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// this file, and for a DISCLAIMER OF ALL WARRANTIES.
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//============================================================================
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#ifndef BREAKPOINT_HXX
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#define BREAKPOINT_HXX
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#include <unordered_map>
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#include "bspf.hxx"
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/**
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This class handles simple debugger breakpoints.
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@author Thomas Jentzsch
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*/
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class BreakpointMap
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{
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private:
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static const uInt16 ADDRESS_MASK = 0x1fff; // either 0x1fff or 0xffff (not needed then)
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public:
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// breakpoint flags
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static const uInt32 ONE_SHOT = 1 << 0; // used to 'trace' command
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struct Breakpoint
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{
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uInt16 addr;
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uInt8 bank;
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Breakpoint()
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: addr(0), bank(0) { }
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Breakpoint(const Breakpoint& bp)
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: addr(bp.addr), bank(bp.bank) { }
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explicit Breakpoint(uInt16 c_addr, uInt8 c_bank)
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: addr(c_addr), bank(c_bank) { }
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bool operator==(const Breakpoint& other) const
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{
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return ((addr & ADDRESS_MASK) == (other.addr & ADDRESS_MASK) && bank == other.bank);
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}
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};
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using BreakpointList = std::vector<Breakpoint>;
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BreakpointMap();
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virtual ~BreakpointMap() = default;
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bool isInitialized() const { return myInitialized; }
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/** Add new breakpoint */
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void add(const Breakpoint& breakpoint, const uInt32 flags = 0);
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void add(const uInt16 addr, const uInt8 bank, const uInt32 flags = 0);
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/** Erase breakpoint */
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void erase(const Breakpoint& breakpoint);
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void erase(const uInt16 addr, const uInt8 bank);
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/** Get info for breakpoint */
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uInt32 get(const Breakpoint& breakpoint) const;
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uInt32 get(uInt16 addr, uInt8 bank) const;
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/** Check if a breakpoint exists */
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bool check(const Breakpoint& breakpoint) const;
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bool check(const uInt16 addr, const uInt8 bank) const;
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BreakpointList getBreakpoints() const;
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/** clear all breakpoints */
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void clear() { myMap.clear(); }
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size_t size() { return myMap.size(); }
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private:
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struct BreakpointHash {
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size_t operator()(const Breakpoint& bp) const {
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return std::hash<uInt64>()(
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uInt64(bp.addr & ADDRESS_MASK) * 13 + uInt64(bp.bank)
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);
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}
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};
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std::unordered_map<Breakpoint, uInt32, BreakpointHash> myMap;
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bool myInitialized;
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};
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#endif
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