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3e9a7175d1
The DebugSession class wraps the usage of Ptrace. It is intended to be used by cli & gui debugger programs. Also, call objdump for disassemly
71 lines
2.8 KiB
C++
71 lines
2.8 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/NonnullOwnPtr.h>
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#include <AK/Optional.h>
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#include <Kernel/UnixTypes.h>
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#include <LibC/sys/arch/i386/regs.h>
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namespace Kernel {
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class ThreadTracer {
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public:
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static NonnullOwnPtr<ThreadTracer> create(pid_t tracer) { return make<ThreadTracer>(tracer); }
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pid_t tracer_pid() const { return m_tracer_pid; }
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bool has_pending_signal(u32 signal) const { return m_pending_signals & (1 << (signal - 1)); }
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void set_signal(u32 signal) { m_pending_signals |= (1 << (signal - 1)); }
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void unset_signal(u32 signal) { m_pending_signals &= ~(1 << (signal - 1)); }
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bool is_tracing_syscalls() const { return m_trace_syscalls; }
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void set_trace_syscalls(bool val) { m_trace_syscalls = val; }
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void set_regs(const RegisterState& regs);
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void set_regs(const PtraceRegisters& regs) { m_regs = regs; }
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bool has_regs() const { return m_regs.has_value(); }
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const PtraceRegisters& regs() const
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{
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ASSERT(m_regs.has_value());
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return m_regs.value();
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}
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explicit ThreadTracer(pid_t);
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private:
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pid_t m_tracer_pid { -1 };
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// This is a bitmap for signals that are sent from the tracer to the tracee
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// TODO: Since we do not currently support sending signals
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// to the tracee via PT_CONTINUE, this bitmap is always zeroed
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u32 m_pending_signals { 0 };
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bool m_trace_syscalls { false };
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Optional<PtraceRegisters> m_regs;
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};
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}
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