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The new monitor component at os/src/monitor is the designated successor of the gdb_monitor. This initial version, however, implements only the subset needed to inspect the memory of the monitored component(s). In contrast to the gdb_monitor, the new component supports the monitoring of multiple components, leveraging the sandbox API. It can therefore be used as a drop-in replacement for the init component. Like the gdb_monitor, the new monitor speaks the GDB protocol over Genode's terminal session. But the protocol implementation does not re-use any gdbserver code, sidestepping the complexities of POSIX. There exist two run scripts illustrating the new component. The os/run/monitor.run script exercises memory inspection via the 'm' command by letting a test program monitor itself. The os/run/monitor_gdb.run script allows for the interactive use of GDB to interact with monitored components. Issue #4917
62 lines
1.1 KiB
C++
62 lines
1.1 KiB
C++
/*
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* \brief Output utilities
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* \author Norman Feske
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* \date 2023-06-06
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*/
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/*
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* Copyright (C) 2023 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef _MONITOR__OUTPUT_H_
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#define _MONITOR__OUTPUT_H_
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#include <base/output.h>
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namespace Genode {
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struct Gdb_hex;
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struct Gdb_checksummed_output;
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}
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struct Genode::Gdb_hex : Hex
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{
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template <typename T>
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explicit Gdb_hex(T value) : Hex(value, OMIT_PREFIX, PAD) { }
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};
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struct Genode::Gdb_checksummed_output : Output
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{
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Output &_output;
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uint8_t _accumulated = 0;
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Gdb_checksummed_output(Output &output) : _output(output)
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{
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print(_output, "$");
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}
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~Gdb_checksummed_output()
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{
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print(_output, "#", Gdb_hex(_accumulated));
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}
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void out_char(char c) override { out_string(&c, 1); }
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void out_string(char const *str, size_t n) override
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{
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n = (n == ~0UL) ? strlen(str) : n;
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for (unsigned i = 0; i < n; i++)
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_accumulated = uint8_t(_accumulated + str[i]);
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_output.out_string(str, n);
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}
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};
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#endif /* _MONITOR__OUTPUT_H_ */
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