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Henrik RydgårdandClaude Sonnet 5
75174af77b
New debugging primitive: break whenever any instruction writes to a
given general-purpose register (0-31), regardless of which address
executes the write. Requested for continuing the reboot.bin trace,
where the actual blocker is "what sets $s3 to this bad value", not
"what happens at a specific address" - existing address/memory
breakpoints can't express that directly.
- GPRBreakpoint (Core/Debugger/Breakpoints.h) mirrors the existing
BreakPoint/MemCheck shape (result/condition/logFormat/hit count),
keyed by register index instead of address/range.
- BreakpointManager keeps a u32 bitmask (bit i = register i has an
active breakpoint) alongside the GPRBreakpoint vector, so the
interpreter loop can test "would this write trip anything" with a
single shift+and against a value already cached in a local.
- RunUntilDowncountZeroWithChecks (Core/MIPS/MIPSTables.cpp) computes
the about-to-be-written register from the current instruction's
OUT_RT/OUT_RD/OUT_RA flags (GetGPRWriteTarget()) and checks it
against the mask, same convention as the existing memcheck handling
right above it (checked before the instruction executes, bails via
CORE_STEPPING_CPU without running it if tripped).
- New BreakReason::GPRBreakpoint ("cpu.gprBreakpoint") for Core_Break.
- WebSocket API: cpu.gprBreakpoint.add/update/remove/list, accepting
either a 0-31 'register' index or a case-insensitive 'name' (e.g.
"s3"), documented in docs/WebSocketDebugger.md.
Interpreter-only for now, deliberately.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GZq8ZtJmFY7bkX5FVkr3P9
38 lines
1.5 KiB
C
38 lines
1.5 KiB
C
// Copyright (c) 2018- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#pragma once
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#include "Core/Debugger/WebSocket/WebSocketUtils.h"
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DebuggerSubscriber *WebSocketBreakpointInit(DebuggerEventHandlerMap &map);
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void WebSocketCPUBreakpointAdd(DebuggerRequest &req);
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void WebSocketCPUBreakpointUpdate(DebuggerRequest &req);
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void WebSocketCPUBreakpointRemove(DebuggerRequest &req);
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void WebSocketCPUBreakpointList(DebuggerRequest &req);
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void WebSocketMemoryBreakpointAdd(DebuggerRequest &req);
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void WebSocketMemoryBreakpointUpdate(DebuggerRequest &req);
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void WebSocketMemoryBreakpointRemove(DebuggerRequest &req);
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void WebSocketMemoryBreakpointList(DebuggerRequest &req);
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void WebSocketGPRBreakpointAdd(DebuggerRequest &req);
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void WebSocketGPRBreakpointUpdate(DebuggerRequest &req);
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void WebSocketGPRBreakpointRemove(DebuggerRequest &req);
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void WebSocketGPRBreakpointList(DebuggerRequest &req);
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