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thermosphere: rewrite gdb/stop points in c++

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This commit is contained in:
TuxSH 2020-02-06 02:05:44 +00:00
parent 61a972abf3
commit bfa917edf5
4 changed files with 93 additions and 84 deletions
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8
thermosphere/src/gdb/hvisor_gdb_comms.cpp
View file

@ -87,11 +87,12 @@ namespace ams::hvisor::gdb {
}
size_t delimPos = transportInterfaceReadDataUntil(iface, m_buffer + 1, 4 + GDB_BUF_LEN - 1, '#');
if (m_buffer[delimPos] != '#') {
// The packet is malformed, send a nack
if (m_buffer[delimPos] != '#' || delimPos == 1) {
// The packet is malformed, send a nack. Refuse empty packets
return WriteNack(iface);
}
m_commandLetter = m_buffer[1];
m_commandData = std::string_view{m_buffer + 1, delimPos};
// Read the checksum
@ -107,6 +108,9 @@ namespace ams::hvisor::gdb {
WriteAck(iface);
}
// Remove command letter
m_commandData.remove_prefix(1);
// State transitions...
if (m_state < State::Attached) {
DEBUG("Received connection from GDB, now attaching...\n");

87
thermosphere/src/gdb/hvisor_gdb_stop_points.cpp Normal file
View file

@ -0,0 +1,87 @@
/*
* Copyright (c) 2019-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* This file is part of Luma3DS.
* Copyright (C) 2016-2019 Aurora Wright, TuxSH
*
* SPDX-License-Identifier: (MIT OR GPL-2.0-or-later)
*/
#include "hvisor_gdb_defines_internal.hpp"
#include "hvisor_gdb_packet_data.hpp"
#include "../breakpoints.h"
#include "../software_breakpoints.h"
#include "../watchpoints.h"
namespace ams::hvisor::gdb {
GDB_DEFINE_HANDLER(ToggleStopPoint)
{
bool add = m_commandLetter == 'Z';
auto [nread, kind, addr, size] = ParseHexIntegerList<3>(m_commandData, ';');
if (nread == 0) {
return ReplyErrno(EILSEQ);
}
m_commandData.remove_prefix(nread);
// We don't support cond_list
bool persist = m_commandData == "cmds:1";
// In theory we should reject leading zeroes in "kind". Oh well...
int res;
static const WatchpointLoadStoreControl kinds[3] = {
WatchpointLoadStoreControl_Store,
WatchpointLoadStoreControl_Load,
WatchpointLoadStoreControl_LoadStore,
};
switch(kind) {
// Software breakpoint
case 0: {
if(size != 4) {
return ReplyErrno(EINVAL);
}
res = add ? addSoftwareBreakpoint(addr, persist) : removeSoftwareBreakpoint(addr, false);
return res == 0 ? ReplyOk() : ReplyErrno(-res);
}
// Hardware breakpoint
case 1: {
if(size != 4) {
return ReplyErrno(EINVAL);
}
res = add ? addBreakpoint(addr) : removeBreakpoint(addr);
return res == 0 ? ReplyOk() : ReplyErrno(-res);
}
// Watchpoints
case 2:
case 3:
case 4: {
res = add ? addWatchpoint(addr, size, kinds[kind - 2]) : removeWatchpoint(addr, size, kinds[kind - 2]);
return res == 0 ? ReplyOk() : ReplyErrno(-res);
}
default: {
return ReplyEmpty();
}
}
}
}

70
thermosphere/src/gdb/stop_points.c
View file

@ -1,70 +0,0 @@
/*
* This file is part of Luma3DS.
* Copyright (C) 2016-2019 Aurora Wright, TuxSH
*
* SPDX-License-Identifier: (MIT OR GPL-2.0-or-later)
*/
#include <string.h>
#include "context.h"
#include "net.h"
#include "../breakpoints.h"
#include "../software_breakpoints.h"
#include "../watchpoints.h"
GDB_DECLARE_HANDLER(ToggleStopPoint)
{
bool add = ctx->commandData[-1] == 'Z';
unsigned long lst[3];
const char *pos = GDB_ParseHexIntegerList(lst, ctx->commandData, 3, ';');
if (pos == NULL) {
return GDB_ReplyErrno(ctx, EILSEQ);
}
bool persist = *pos != 0 && strncmp(pos, ";cmds:1", 7) == 0;
// In theory we should reject leading zeroes in "kind". Oh well...
unsigned long kind = lst[0];
uintptr_t addr = lst[1];
size_t size = lst[2];
int res;
static const WatchpointLoadStoreControl kinds[3] = {
WatchpointLoadStoreControl_Store,
WatchpointLoadStoreControl_Load,
WatchpointLoadStoreControl_LoadStore,
};
switch(kind) {
// Software breakpoint
case 0: {
if(size != 4) {
return GDB_ReplyErrno(ctx, EINVAL);
}
res = add ? addSoftwareBreakpoint(addr, persist) : removeSoftwareBreakpoint(addr, false);
return res == 0 ? GDB_ReplyOk(ctx) : GDB_ReplyErrno(ctx, -res);
}
// Hardware breakpoint
case 1: {
if(size != 4) {
return GDB_ReplyErrno(ctx, EINVAL);
}
res = add ? addBreakpoint(addr) : removeBreakpoint(addr);
return res == 0 ? GDB_ReplyOk(ctx) : GDB_ReplyErrno(ctx, -res);
}
// Watchpoints
case 2:
case 3:
case 4: {
res = add ? addWatchpoint(addr, size, kinds[kind - 2]) : removeWatchpoint(addr, size, kinds[kind - 2]);
return res == 0 ? GDB_ReplyOk(ctx) : GDB_ReplyErrno(ctx, -res);
}
default: {
return GDB_ReplyEmpty(ctx);
}
}
}

12
thermosphere/src/gdb/stop_points.h
View file

@ -1,12 +0,0 @@
/*
* This file is part of Luma3DS.
* Copyright (C) 2016-2019 Aurora Wright, TuxSH
*
* SPDX-License-Identifier: (MIT OR GPL-2.0-or-later)
*/
#pragma once
#include "context.h"
GDB_DECLARE_HANDLER(ToggleStopPoint);