mirror of
https://git.h3cjp.net/H3cJP/yuzu.git
synced 2024-11-14 13:32:54 +00:00
Implement gdbstub
This commit is contained in:
polaris-
parent
f7b4f44adf
commit
5114d75647
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@ -30,6 +30,8 @@
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#include "video_core/video_core.h"
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#include "core/gdbstub/gdbstub.h"
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static void PrintHelp()
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{
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@ -72,6 +74,7 @@ int main(int argc, char **argv) {
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Config config;
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log_filter.ParseFilterString(Settings::values.log_filter);
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GDBStub::SetServerPort(static_cast<u32>(Settings::values.gdbstub_port));
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EmuWindow_GLFW* emu_window = new EmuWindow_GLFW;
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@ -75,6 +75,10 @@ void Config::ReadValues() {
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// Miscellaneous
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Settings::values.log_filter = glfw_config->Get("Miscellaneous", "log_filter", "*:Info");
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// GDBStubebugging
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Settings::values.use_gdbstub = glfw_config->GetBoolean("Debugging", "use_gdbstub", false);
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Settings::values.gdbstub_port = glfw_config->GetInteger("Debugging", "gdbstub_port", 24689);
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}
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void Config::Reload() {
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@ -66,6 +66,11 @@ region_value =
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# A filter which removes logs below a certain logging level.
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# Examples: *:Debug Kernel.SVC:Trace Service.*:Critical
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log_filter = *:Info
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[Debugging]
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# Port for listening to GDB connections.
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use_gdbstub=false
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gdbstub_port=24689
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)";
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}
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@ -62,6 +62,11 @@ void Config::ReadValues() {
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qt_config->beginGroup("Miscellaneous");
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Settings::values.log_filter = qt_config->value("log_filter", "*:Info").toString().toStdString();
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qt_config->endGroup();
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qt_config->beginGroup("Debugging");
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Settings::values.use_gdbstub = qt_config->value("use_gdbstub", false).toBool();
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Settings::values.gdbstub_port = qt_config->value("gdbstub_port", 24689).toInt();
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qt_config->endGroup();
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}
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void Config::SaveValues() {
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@ -97,6 +102,11 @@ void Config::SaveValues() {
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qt_config->beginGroup("Miscellaneous");
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qt_config->setValue("log_filter", QString::fromStdString(Settings::values.log_filter));
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qt_config->endGroup();
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qt_config->beginGroup("Debugging");
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qt_config->setValue("use_gdbstub", Settings::values.use_gdbstub);
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qt_config->setValue("gdbstub_port", Settings::values.gdbstub_port);
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qt_config->endGroup();
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}
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void Config::Reload() {
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@ -47,6 +47,12 @@
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#include "video_core/video_core.h"
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#ifdef USE_GDBSTUB
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#include "core/gdbstub/gdbstub.h"
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#endif
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#include "core/gdbstub/gdbstub.h"
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GMainWindow::GMainWindow() : emu_thread(nullptr)
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{
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Pica::g_debug_context = Pica::DebugContext::Construct();
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@ -137,6 +143,15 @@ GMainWindow::GMainWindow() : emu_thread(nullptr)
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microProfileDialog->setVisible(settings.value("microProfileDialogVisible").toBool());
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settings.endGroup();
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#ifdef USE_GDBSTUB
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Gdbstub::SetServerPort(static_cast<u32>(Settings::values.gdbstub_port));
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#endif
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ui.action_Use_Gdbstub->setChecked(Settings::values.use_gdbstub);
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SetGdbstubEnabled(ui.action_Use_Gdbstub->isChecked());
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GDBStub::SetServerPort(static_cast<u32>(Settings::values.gdbstub_port));
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ui.action_Use_Hardware_Renderer->setChecked(Settings::values.use_hw_renderer);
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SetHardwareRendererEnabled(ui.action_Use_Hardware_Renderer->isChecked());
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@ -167,6 +182,7 @@ GMainWindow::GMainWindow() : emu_thread(nullptr)
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connect(ui.action_Stop, SIGNAL(triggered()), this, SLOT(OnStopGame()));
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connect(ui.action_Use_Hardware_Renderer, SIGNAL(triggered(bool)), this, SLOT(SetHardwareRendererEnabled(bool)));
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connect(ui.action_Use_Shader_JIT, SIGNAL(triggered(bool)), this, SLOT(SetShaderJITEnabled(bool)));
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connect(ui.action_Use_Gdbstub, SIGNAL(triggered(bool)), this, SLOT(SetGdbstubEnabled(bool)));
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connect(ui.action_Single_Window_Mode, SIGNAL(triggered(bool)), this, SLOT(ToggleWindowMode()));
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connect(ui.action_Hotkeys, SIGNAL(triggered()), this, SLOT(OnOpenHotkeysDialog()));
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@ -414,6 +430,10 @@ void GMainWindow::SetHardwareRendererEnabled(bool enabled) {
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VideoCore::g_hw_renderer_enabled = enabled;
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}
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void GMainWindow::SetGdbstubEnabled(bool enabled) {
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GDBStub::ToggleServer(enabled);
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}
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void GMainWindow::SetShaderJITEnabled(bool enabled) {
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VideoCore::g_shader_jit_enabled = enabled;
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}
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@ -94,6 +94,7 @@ private slots:
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void OnConfigure();
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void OnDisplayTitleBars(bool);
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void SetHardwareRendererEnabled(bool);
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void SetGdbstubEnabled(bool);
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void SetShaderJITEnabled(bool);
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void ToggleWindowMode();
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@ -74,6 +74,7 @@
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<addaction name="separator"/>
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<addaction name="action_Use_Hardware_Renderer"/>
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<addaction name="action_Use_Shader_JIT"/>
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<addaction name="action_Use_Gdbstub"/>
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<addaction name="action_Configure"/>
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</widget>
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<widget class="QMenu" name="menu_View">
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@ -169,6 +170,14 @@
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<string>Use Shader JIT</string>
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</property>
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</action>
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<action name="action_Use_Gdbstub">
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<property name="checkable">
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<bool>true</bool>
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</property>
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<property name="text">
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<string>Use Gdbstub</string>
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</property>
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</action>
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<action name="action_Configure">
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<property name="text">
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<string>Configure ...</string>
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@ -29,6 +29,7 @@ namespace Log {
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SUB(Debug, Emulated) \
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SUB(Debug, GPU) \
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SUB(Debug, Breakpoint) \
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SUB(Debug, GDBStub) \
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CLS(Kernel) \
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SUB(Kernel, SVC) \
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CLS(Service) \
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@ -43,6 +43,7 @@ enum class Class : ClassType {
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Debug_Emulated, ///< Debug messages from the emulated programs
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Debug_GPU, ///< GPU debugging tools
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Debug_Breakpoint, ///< Logging breakpoints and watchpoints
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Debug_GDBStub, ///< GDB Stub
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Kernel, ///< The HLE implementation of the CTR kernel
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Kernel_SVC, ///< Kernel system calls
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Service, ///< HLE implementation of system services. Each major service
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@ -22,6 +22,7 @@ set(SRCS
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file_sys/archive_systemsavedata.cpp
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file_sys/disk_archive.cpp
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file_sys/ivfc_archive.cpp
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gdbstub/gdbstub.cpp
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hle/config_mem.cpp
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hle/hle.cpp
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hle/applets/applet.cpp
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@ -149,6 +150,7 @@ set(HEADERS
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file_sys/disk_archive.h
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file_sys/file_backend.h
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file_sys/ivfc_archive.h
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gdbstub/gdbstub.h
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hle/config_mem.h
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hle/function_wrappers.h
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hle/hle.h
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@ -23,6 +23,8 @@
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#include "core/arm/skyeye_common/armsupp.h"
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#include "core/arm/skyeye_common/vfp/vfp.h"
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#include "core/gdbstub/gdbstub.h"
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Common::Profiling::TimingCategory profile_execute("DynCom::Execute");
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Common::Profiling::TimingCategory profile_decode("DynCom::Decode");
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@ -3548,6 +3550,7 @@ static int InterpreterTranslate(ARMul_State* cpu, int& bb_start, u32 addr) {
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CITRA_IGNORE_EXIT(-1);
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}
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inst_base = arm_instruction_trans[idx](inst, idx);
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translated:
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phys_addr += inst_size;
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@ -3580,6 +3583,8 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
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Common::Profiling::ScopeTimer timer_execute(profile_execute);
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MICROPROFILE_SCOPE(DynCom_Execute);
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int breakpoint_offset = -1;
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#undef RM
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#undef RS
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@ -3604,15 +3609,27 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
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#define INC_PC(l) ptr += sizeof(arm_inst) + l
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#define INC_PC_STUB ptr += sizeof(arm_inst)
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#define GDB_BP_CHECK \
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cpu->Cpsr &= ~(1 << 5); \
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cpu->Cpsr |= cpu->TFlag << 5; \
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if (GDBStub::g_server_enabled) { \
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if (GDBStub::IsMemoryBreak() || PC == breakpoint_offset) { \
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GDBStub::Break(); \
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goto END; \
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} \
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}
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// GCC and Clang have a C++ extension to support a lookup table of labels. Otherwise, fallback to a
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// clunky switch statement.
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#if defined __GNUC__ || defined __clang__
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#define GOTO_NEXT_INST \
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GDB_BP_CHECK; \
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if (num_instrs >= cpu->NumInstrsToExecute) goto END; \
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num_instrs++; \
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goto *InstLabel[inst_base->idx]
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#else
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#define GOTO_NEXT_INST \
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GDB_BP_CHECK; \
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if (num_instrs >= cpu->NumInstrsToExecute) goto END; \
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num_instrs++; \
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switch(inst_base->idx) { \
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@ -3878,6 +3895,7 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
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unsigned int addr;
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unsigned int num_instrs = 0;
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int ptr;
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LOAD_NZCVT;
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@ -3903,6 +3921,11 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
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goto END;
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}
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// Find breakpoint if one exists within the block
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if (GDBStub::g_server_enabled && GDBStub::IsConnected()) {
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breakpoint_offset = GDBStub::GetNextBreakpointFromAddress(cpu->Reg[15], GDBStub::BreakpointType::Execute);
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}
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inst_base = (arm_inst *)&inst_buf[ptr];
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GOTO_NEXT_INST;
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}
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@ -4454,7 +4477,7 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
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ldst_inst* inst_cream = (ldst_inst*)inst_base->component;
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inst_cream->get_addr(cpu, inst_cream->inst, addr);
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cpu->Reg[BITS(inst_cream->inst, 12, 15)] = Memory::Read8(addr);
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cpu->Reg[BITS(inst_cream->inst, 12, 15)] = cpu->ReadMemory8(addr);
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if (BITS(inst_cream->inst, 12, 15) == 15) {
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INC_PC(sizeof(ldst_inst));
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@ -4472,7 +4495,7 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
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ldst_inst* inst_cream = (ldst_inst*)inst_base->component;
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inst_cream->get_addr(cpu, inst_cream->inst, addr);
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cpu->Reg[BITS(inst_cream->inst, 12, 15)] = Memory::Read8(addr);
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cpu->Reg[BITS(inst_cream->inst, 12, 15)] = cpu->ReadMemory8(addr);
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if (BITS(inst_cream->inst, 12, 15) == 15) {
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INC_PC(sizeof(ldst_inst));
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@ -4531,7 +4554,7 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
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cpu->SetExclusiveMemoryAddress(read_addr);
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RD = Memory::Read8(read_addr);
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RD = cpu->ReadMemory8(read_addr);
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if (inst_cream->Rd == 15) {
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INC_PC(sizeof(generic_arm_inst));
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goto DISPATCH;
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@ -4604,7 +4627,7 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
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if (inst_base->cond == ConditionCode::AL || CondPassed(cpu, inst_base->cond)) {
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ldst_inst* inst_cream = (ldst_inst*)inst_base->component;
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inst_cream->get_addr(cpu, inst_cream->inst, addr);
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unsigned int value = Memory::Read8(addr);
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unsigned int value = cpu->ReadMemory8(addr);
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if (BIT(value, 7)) {
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value |= 0xffffff00;
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}
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@ -6027,7 +6050,7 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
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ldst_inst* inst_cream = (ldst_inst*)inst_base->component;
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inst_cream->get_addr(cpu, inst_cream->inst, addr);
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unsigned int value = cpu->Reg[BITS(inst_cream->inst, 12, 15)] & 0xff;
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Memory::Write8(addr, value);
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cpu->WriteMemory8(addr, value);
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}
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cpu->Reg[15] += cpu->GetInstructionSize();
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INC_PC(sizeof(ldst_inst));
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@ -6040,7 +6063,7 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
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ldst_inst* inst_cream = (ldst_inst*)inst_base->component;
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inst_cream->get_addr(cpu, inst_cream->inst, addr);
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unsigned int value = cpu->Reg[BITS(inst_cream->inst, 12, 15)] & 0xff;
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Memory::Write8(addr, value);
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cpu->WriteMemory8(addr, value);
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}
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cpu->Reg[15] += cpu->GetInstructionSize();
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INC_PC(sizeof(ldst_inst));
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@ -6091,7 +6114,7 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
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if (cpu->IsExclusiveMemoryAccess(write_addr)) {
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cpu->UnsetExclusiveMemoryAddress();
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Memory::Write8(write_addr, cpu->Reg[inst_cream->Rm]);
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cpu->WriteMemory8(write_addr, cpu->Reg[inst_cream->Rm]);
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RD = 0;
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} else {
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// Failed to write due to mutex access
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@ -6250,8 +6273,8 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
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if (inst_base->cond == ConditionCode::AL || CondPassed(cpu, inst_base->cond)) {
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swp_inst* inst_cream = (swp_inst*)inst_base->component;
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addr = RN;
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unsigned int value = Memory::Read8(addr);
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Memory::Write8(addr, (RM & 0xFF));
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unsigned int value = cpu->ReadMemory8(addr);
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cpu->WriteMemory8(addr, (RM & 0xFF));
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RD = value;
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}
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cpu->Reg[15] += cpu->GetInstructionSize();
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@ -7,6 +7,7 @@
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#include "core/memory.h"
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#include "core/arm/skyeye_common/armstate.h"
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#include "core/arm/skyeye_common/vfp/vfp.h"
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#include "core/gdbstub/gdbstub.h"
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ARMul_State::ARMul_State(PrivilegeMode initial_mode)
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{
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@ -185,8 +186,25 @@ void ARMul_State::ResetMPCoreCP15Registers()
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CP15[CP15_TLB_DEBUG_CONTROL] = 0x00000000;
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}
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static void CheckMemoryBreakpoint(u32 address, GDBStub::BreakpointType type)
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{
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if (GDBStub::g_server_enabled && GDBStub::CheckBreakpoint(address, type)) {
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LOG_DEBUG(Debug, "Found memory breakpoint @ %08x", address);
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GDBStub::Break(true);
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}
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}
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u8 ARMul_State::ReadMemory8(u32 address) const
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{
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CheckMemoryBreakpoint(address, GDBStub::BreakpointType::Read);
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return Memory::Read8(address);
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}
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u16 ARMul_State::ReadMemory16(u32 address) const
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{
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CheckMemoryBreakpoint(address, GDBStub::BreakpointType::Read);
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u16 data = Memory::Read16(address);
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if (InBigEndianMode())
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@ -197,6 +215,8 @@ u16 ARMul_State::ReadMemory16(u32 address) const
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u32 ARMul_State::ReadMemory32(u32 address) const
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{
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CheckMemoryBreakpoint(address, GDBStub::BreakpointType::Read);
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u32 data = Memory::Read32(address);
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if (InBigEndianMode())
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@ -207,6 +227,8 @@ u32 ARMul_State::ReadMemory32(u32 address) const
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u64 ARMul_State::ReadMemory64(u32 address) const
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{
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CheckMemoryBreakpoint(address, GDBStub::BreakpointType::Read);
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u64 data = Memory::Read64(address);
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if (InBigEndianMode())
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@ -215,8 +237,17 @@ u64 ARMul_State::ReadMemory64(u32 address) const
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return data;
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}
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void ARMul_State::WriteMemory8(u32 address, u8 data)
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{
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CheckMemoryBreakpoint(address, GDBStub::BreakpointType::Write);
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Memory::Write8(address, data);
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}
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void ARMul_State::WriteMemory16(u32 address, u16 data)
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{
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CheckMemoryBreakpoint(address, GDBStub::BreakpointType::Write);
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if (InBigEndianMode())
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data = Common::swap16(data);
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@ -225,6 +256,8 @@ void ARMul_State::WriteMemory16(u32 address, u16 data)
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void ARMul_State::WriteMemory32(u32 address, u32 data)
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{
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CheckMemoryBreakpoint(address, GDBStub::BreakpointType::Write);
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if (InBigEndianMode())
|
||||
data = Common::swap32(data);
|
||||
|
||||
|
|
@ -233,6 +266,8 @@ void ARMul_State::WriteMemory32(u32 address, u32 data)
|
|||
|
||||
void ARMul_State::WriteMemory64(u32 address, u64 data)
|
||||
{
|
||||
CheckMemoryBreakpoint(address, GDBStub::BreakpointType::Write);
|
||||
|
||||
if (InBigEndianMode())
|
||||
data = Common::swap64(data);
|
||||
|
||||
|
|
|
|||
|
|
@ -153,9 +153,11 @@ public:
|
|||
|
||||
// Reads/writes data in big/little endian format based on the
|
||||
// state of the E (endian) bit in the APSR.
|
||||
u8 ReadMemory8(u32 address) const;
|
||||
u16 ReadMemory16(u32 address) const;
|
||||
u32 ReadMemory32(u32 address) const;
|
||||
u64 ReadMemory64(u32 address) const;
|
||||
void WriteMemory8(u32 address, u8 data);
|
||||
void WriteMemory16(u32 address, u16 data);
|
||||
void WriteMemory32(u32 address, u32 data);
|
||||
void WriteMemory64(u32 address, u64 data);
|
||||
|
|
|
|||
|
|
@ -13,6 +13,8 @@
|
|||
#include "core/hle/kernel/thread.h"
|
||||
#include "core/hw/hw.h"
|
||||
|
||||
#include "core/gdbstub/gdbstub.h"
|
||||
|
||||
namespace Core {
|
||||
|
||||
ARM_Interface* g_app_core = nullptr; ///< ARM11 application core
|
||||
|
|
@ -20,6 +22,21 @@ ARM_Interface* g_sys_core = nullptr; ///< ARM11 system (OS) core
|
|||
|
||||
/// Run the core CPU loop
|
||||
void RunLoop(int tight_loop) {
|
||||
if (GDBStub::g_server_enabled) {
|
||||
GDBStub::HandlePacket();
|
||||
|
||||
// If the loop is halted and we want to step, use a tiny (1) number of instructions to execute.
|
||||
// Otherwise get out of the loop function.
|
||||
if (GDBStub::GetCpuHaltFlag()) {
|
||||
if (GDBStub::GetCpuStepFlag()) {
|
||||
GDBStub::SetCpuStepFlag(false);
|
||||
tight_loop = 1;
|
||||
} else {
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// If we don't have a currently active thread then don't execute instructions,
|
||||
// instead advance to the next event and try to yield to the next thread
|
||||
if (Kernel::GetCurrentThread() == nullptr) {
|
||||
|
|
|
|||
940
src/core/gdbstub/gdbstub.cpp
Normal file
940
src/core/gdbstub/gdbstub.cpp
Normal file
|
|
@ -0,0 +1,940 @@
|
|||
// Copyright 2013 Dolphin Emulator Project
|
||||
// Licensed under GPLv2+
|
||||
// Refer to the license.txt file included.
|
||||
|
||||
// Originally written by Sven Peter <sven@fail0verflow.com> for anergistic.
|
||||
|
||||
#include <csignal>
|
||||
#include <cstdarg>
|
||||
#include <cstdio>
|
||||
#include <cstring>
|
||||
#include <fcntl.h>
|
||||
#include <map>
|
||||
#include <numeric>
|
||||
|
||||
#ifdef _MSC_VER
|
||||
#include <WinSock2.h>
|
||||
#include <ws2tcpip.h>
|
||||
#include <common/x64/abi.h>
|
||||
#include <io.h>
|
||||
#include <iphlpapi.h>
|
||||
#define SHUT_RDWR 2
|
||||
#else
|
||||
#include <sys/select.h>
|
||||
#include <sys/socket.h>
|
||||
#include <sys/un.h>
|
||||
#include <netinet/in.h>
|
||||
#include <unistd.h>
|
||||
#endif
|
||||
|
||||
#include "common/logging/log.h"
|
||||
#include "common/string_util.h"
|
||||
#include <core/arm/arm_interface.h>
|
||||
#include "core/core.h"
|
||||
#include "core/memory.h"
|
||||
#include "gdbstub.h"
|
||||
|
||||
const int GDB_BUFFER_SIZE = 10000;
|
||||
|
||||
const char GDB_STUB_START = '$';
|
||||
const char GDB_STUB_END = '#';
|
||||
const char GDB_STUB_ACK = '+';
|
||||
const char GDB_STUB_NACK = '-';
|
||||
|
||||
#ifndef SIGTRAP
|
||||
const u32 SIGTRAP = 5;
|
||||
#endif
|
||||
|
||||
#ifndef SIGTERM
|
||||
const u32 SIGTERM = 15;
|
||||
#endif
|
||||
|
||||
#ifndef MSG_WAITALL
|
||||
const u32 MSG_WAITALL = 8;
|
||||
#endif
|
||||
|
||||
const u32 R0_REGISTER = 0;
|
||||
const u32 R15_REGISTER = 15;
|
||||
const u32 CSPR_REGISTER = 25;
|
||||
|
||||
namespace GDBStub {
|
||||
|
||||
static int gdbserver_socket = -1;
|
||||
|
||||
static u8 command_buffer[GDB_BUFFER_SIZE];
|
||||
static u32 command_length;
|
||||
|
||||
static u32 latest_signal = 0;
|
||||
static u32 send_signal = 0;
|
||||
static u32 step_break = 0;
|
||||
static bool memory_break = false;
|
||||
|
||||
// Binding to a port within the reserved ports range (0-1023) requires root permissions,
|
||||
// so default to a port outside of that range.
|
||||
static u16 gdbstub_port = 24689;
|
||||
|
||||
static bool halt_loop = true;
|
||||
static bool step_loop = false;
|
||||
std::atomic<bool> g_server_enabled(false);
|
||||
|
||||
#ifdef _WIN32
|
||||
WSADATA InitData;
|
||||
#endif
|
||||
|
||||
struct Breakpoint {
|
||||
bool active;
|
||||
PAddr addr;
|
||||
u32 len;
|
||||
};
|
||||
|
||||
static std::map<u32, Breakpoint> breakpoints_execute;
|
||||
static std::map<u32, Breakpoint> breakpoints_read;
|
||||
static std::map<u32, Breakpoint> breakpoints_write;
|
||||
|
||||
/**
|
||||
* Turns hex string character into the equivalent byte.
|
||||
*
|
||||
* @param hex Input hex character to be turned into byte.
|
||||
*/
|
||||
static u8 HexCharToValue(u8 hex) {
|
||||
if (hex >= '0' && hex <= '9') {
|
||||
return hex - '0';
|
||||
} else if (hex >= 'a' && hex <= 'f') {
|
||||
return hex - 'a' + 0xA;
|
||||
} else if (hex >= 'A' && hex <= 'F') {
|
||||
return hex - 'A' + 0xA;
|
||||
}
|
||||
|
||||
LOG_ERROR(Debug_GDBStub, "Invalid nibble: %c (%02x)\n", hex, hex);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Turn nibble of byte into hex string character.
|
||||
*
|
||||
* @param n Nibble to be turned into hex character.
|
||||
*/
|
||||
static u8 NibbleToHex(u8 n) {
|
||||
n &= 0xF;
|
||||
if (n < 0xA) {
|
||||
return '0' + n;
|
||||
} else {
|
||||
return 'A' + n - 0xA;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts input array of u8 bytes into their equivalent hex string characters.
|
||||
*
|
||||
* @param dest Pointer to buffer to store output hex string characters.
|
||||
* @param src Pointer to array of u8 bytes.
|
||||
* @param len Length of src array.
|
||||
*/
|
||||
static void MemToHex(u8* dest, u8* src, u32 len) {
|
||||
while (len-- > 0) {
|
||||
u8 tmp = *src++;
|
||||
*dest++ = NibbleToHex(tmp >> 4);
|
||||
*dest++ = NibbleToHex(tmp);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts input hex string characters into an array of equivalent of u8 bytes.
|
||||
*
|
||||
* @param dest Pointer to buffer to store u8 bytes.
|
||||
* @param src Pointer to array of output hex string characters.
|
||||
* @param len Length of src array.
|
||||
*/
|
||||
static void HexToMem(u8* dest, u8* src, u32 len) {
|
||||
while (len-- > 0) {
|
||||
*dest++ = (HexCharToValue(src[0]) << 4) | HexCharToValue(src[1]);
|
||||
src += 2;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert a u32 into a hex string.
|
||||
*
|
||||
* @param dest Pointer to buffer to store output hex string characters.
|
||||
*/
|
||||
static void IntToHex(u8* dest, u32 v) {
|
||||
for (int i = 0; i < 8; i += 2) {
|
||||
dest[i + 1] = NibbleToHex(v >> (4 * i));
|
||||
dest[i] = NibbleToHex(v >> (4 * (i + 1)));
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert a hex string into a u32.
|
||||
*
|
||||
* @param src Pointer to hex string.
|
||||
*/
|
||||
static u32 HexToInt(u8* src) {
|
||||
u32 output = 0;
|
||||
|
||||
for (int i = 0; i < 8; i += 2) {
|
||||
output = (output << 4) | HexCharToValue(src[7 - i - 1]);
|
||||
output = (output << 4) | HexCharToValue(src[7 - i]);
|
||||
}
|
||||
|
||||
return output;
|
||||
}
|
||||
|
||||
/// Read a byte from the gdb client.
|
||||
static u8 ReadByte() {
|
||||
u8 c;
|
||||
size_t received_size = recv(gdbserver_socket, reinterpret_cast<char*>(&c), 1, MSG_WAITALL);
|
||||
if (received_size != 1) {
|
||||
LOG_ERROR(Debug_GDBStub, "recv failed : %ld", received_size);
|
||||
Deinit();
|
||||
}
|
||||
|
||||
return c;
|
||||
}
|
||||
|
||||
/// Calculate the checksum of the current command buffer.
|
||||
static u8 CalculateChecksum(u8 *buffer, u32 length) {
|
||||
return static_cast<u8>(std::accumulate(buffer, buffer + length, 0, std::plus<u8>()));
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the list of breakpoints for a given breakpoint type.
|
||||
*
|
||||
* @param type Type of breakpoint list.
|
||||
*/
|
||||
static std::map<u32, Breakpoint>& GetBreakpointList(BreakpointType type) {
|
||||
switch (type) {
|
||||
case BreakpointType::Execute:
|
||||
return breakpoints_execute;
|
||||
case BreakpointType::Read:
|
||||
return breakpoints_read;
|
||||
case BreakpointType::Write:
|
||||
return breakpoints_write;
|
||||
default:
|
||||
return breakpoints_read;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Remove the breakpoint from the given address of the specified type.
|
||||
*
|
||||
* @param type Type of breakpoint.
|
||||
* @param addr Address of breakpoint.
|
||||
*/
|
||||
static void RemoveBreakpoint(BreakpointType type, PAddr addr) {
|
||||
std::map<u32, Breakpoint>& p = GetBreakpointList(type);
|
||||
|
||||
auto bp = p.find(addr);
|
||||
if (bp != p.end()) {
|
||||
LOG_DEBUG(Debug_GDBStub, "gdb: removed a breakpoint: %08x bytes at %08x of type %d\n", bp->second.len, bp->second.addr, type);
|
||||
p.erase(addr);
|
||||
}
|
||||
}
|
||||
|
||||
PAddr GetNextBreakpointFromAddress(PAddr addr, BreakpointType type) {
|
||||
std::map<u32, Breakpoint>& p = GetBreakpointList(type);
|
||||
auto next_breakpoint = p.lower_bound(addr);
|
||||
u32 breakpoint = -1;
|
||||
|
||||
if (next_breakpoint != p.end())
|
||||
breakpoint = next_breakpoint->first;
|
||||
|
||||
return breakpoint;
|
||||
}
|
||||
|
||||
bool CheckBreakpoint(PAddr addr, BreakpointType type) {
|
||||
if (!IsConnected()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
std::map<u32, Breakpoint>& p = GetBreakpointList(type);
|
||||
|
||||
auto bp = p.find(addr);
|
||||
if (bp != p.end()) {
|
||||
u32 len = bp->second.len;
|
||||
|
||||
// IDA Pro defaults to 4-byte breakpoints for all non-hardware breakpoints
|
||||
// no matter if it's a 4-byte or 2-byte instruction. When you execute a
|
||||
// Thumb instruction with a 4-byte breakpoint set, it will set a breakpoint on
|
||||
// two instructions instead of the single instruction you placed the breakpoint
|
||||
// on. So, as a way to make sure that execution breakpoints are only breaking
|
||||
// on the instruction that was specified, set the length of an execution
|
||||
// breakpoint to 1. This should be fine since the CPU should never begin executing
|
||||
// an instruction anywhere except the beginning of the instruction.
|
||||
if (type == BreakpointType::Execute) {
|
||||
len = 1;
|
||||
}
|
||||
|
||||
if (bp->second.active && (addr >= bp->second.addr && addr < bp->second.addr + len)) {
|
||||
LOG_DEBUG(Debug_GDBStub, "Found breakpoint type %d @ %08x, range: %08x - %08x (%d bytes)\n", type, addr, bp->second.addr, bp->second.addr + len, len);
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Send packet to gdb client.
|
||||
*
|
||||
* @param packet Packet to be sent to client.
|
||||
*/
|
||||
static void SendPacket(const char packet) {
|
||||
size_t sent_size = send(gdbserver_socket, &packet, 1, 0);
|
||||
if (sent_size != 1) {
|
||||
LOG_ERROR(Debug_GDBStub, "send failed");
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Send reply to gdb client.
|
||||
*
|
||||
* @param reply Reply to be sent to client.
|
||||
*/
|
||||
static void SendReply(const char* reply) {
|
||||
if (!IsConnected()) {
|
||||
return;
|
||||
}
|
||||
|
||||
memset(command_buffer, 0, sizeof(command_buffer));
|
||||
|
||||
command_length = strlen(reply);
|
||||
if (command_length + 4 > sizeof(command_buffer)) {
|
||||
LOG_ERROR(Debug_GDBStub, "command_buffer overflow in SendReply");
|
||||
}
|
||||
|
||||
memcpy(command_buffer + 1, reply, command_length);
|
||||
|
||||
u8 checksum = CalculateChecksum(command_buffer, command_length + 1);
|
||||
command_buffer[0] = GDB_STUB_START;
|
||||
command_buffer[command_length + 1] = GDB_STUB_END;
|
||||
command_buffer[command_length + 2] = NibbleToHex(checksum >> 4);
|
||||
command_buffer[command_length + 3] = NibbleToHex(checksum);
|
||||
|
||||
u8* ptr = command_buffer;
|
||||
u32 left = command_length + 4;
|
||||
while (left > 0) {
|
||||
int sent_size = send(gdbserver_socket, reinterpret_cast<char*>(ptr), left, 0);
|
||||
if (sent_size < 0) {
|
||||
LOG_ERROR(Debug_GDBStub, "gdb: send failed");
|
||||
return Deinit();
|
||||
}
|
||||
|
||||
left -= sent_size;
|
||||
ptr += sent_size;
|
||||
}
|
||||
}
|
||||
|
||||
/// Handle query command from gdb client.
|
||||
static void HandleQuery() {
|
||||
LOG_DEBUG(Debug_GDBStub, "gdb: query '%s'\n", command_buffer + 1);
|
||||
|
||||
if (!strcmp(reinterpret_cast<const char*>(command_buffer + 1), "TStatus")) {
|
||||
SendReply("T0");
|
||||
} else {
|
||||
SendReply("");
|
||||
}
|
||||
}
|
||||
|
||||
/// Handle set thread command from gdb client.
|
||||
static void HandleSetThread() {
|
||||
if (memcmp(command_buffer, "Hg0", 3) == 0 ||
|
||||
memcmp(command_buffer, "Hc-1", 4) == 0 ||
|
||||
memcmp(command_buffer, "Hc0", 4) == 0 ||
|
||||
memcmp(command_buffer, "Hc1", 4) == 0) {
|
||||
return SendReply("OK");
|
||||
}
|
||||
|
||||
SendReply("E01");
|
||||
}
|
||||
|
||||
/// Create and send signal packet.
|
||||
static void HandleSignal() {
|
||||
std::string buffer = Common::StringFromFormat("T%02x%02x:%08x;%02x:%08x;", latest_signal, 15, htonl(Core::g_app_core->GetPC()), 13, htonl(Core::g_app_core->GetReg(13)));
|
||||
|
||||
LOG_DEBUG(Debug_GDBStub, "Response: %s", buffer.c_str());
|
||||
|
||||
SendReply(buffer.c_str());
|
||||
}
|
||||
|
||||
/**
|
||||
* Set signal and send packet to client through HandleSignal if signal flag is set using SendSignal.
|
||||
*
|
||||
* @param signal Signal to be sent to client.
|
||||
*/
|
||||
int SendSignal(u32 signal) {
|
||||
if (gdbserver_socket == -1) {
|
||||
return 1;
|
||||
}
|
||||
|
||||
latest_signal = signal;
|
||||
|
||||
if (send_signal) {
|
||||
HandleSignal();
|
||||
send_signal = 0;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/// Read command from gdb client.
|
||||
static void ReadCommand() {
|
||||
command_length = 0;
|
||||
memset(command_buffer, 0, sizeof(command_buffer));
|
||||
|
||||
u8 c = ReadByte();
|
||||
if (c == '+') {
|
||||
//ignore ack
|
||||
return;
|
||||
} else if (c == 0x03) {
|
||||
LOG_INFO(Debug_GDBStub, "gdb: found break command\n");
|
||||
halt_loop = true;
|
||||
send_signal = 1;
|
||||
SendSignal(SIGTRAP);
|
||||
return;
|
||||
} else if (c != GDB_STUB_START) {
|
||||
LOG_DEBUG(Debug_GDBStub, "gdb: read invalid byte %02x\n", c);
|
||||
return;
|
||||
}
|
||||
|
||||
while ((c = ReadByte()) != GDB_STUB_END) {
|
||||
command_buffer[command_length++] = c;
|
||||
if (command_length == sizeof(command_buffer)) {
|
||||
LOG_ERROR(Debug_GDBStub, "gdb: command_buffer overflow\n");
|
||||
SendPacket(GDB_STUB_NACK);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
u8 checksum_received = HexCharToValue(ReadByte()) << 4;
|
||||
checksum_received |= HexCharToValue(ReadByte());
|
||||
|
||||
u8 checksum_calculated = CalculateChecksum(command_buffer, command_length);
|
||||
|
||||
if (checksum_received != checksum_calculated) {
|
||||
LOG_ERROR(Debug_GDBStub, "gdb: invalid checksum: calculated %02x and read %02x for $%s# (length: %d)\n",
|
||||
checksum_calculated, checksum_received, command_buffer, command_length);
|
||||
|
||||
command_length = 0;
|
||||
|
||||
SendPacket(GDB_STUB_NACK);
|
||||
return;
|
||||
}
|
||||
|
||||
SendPacket(GDB_STUB_ACK);
|
||||
}
|
||||
|
||||
/// Check if there is data to be read from the gdb client.
|
||||
static bool IsDataAvailable() {
|
||||
if (!IsConnected()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
fd_set fd_socket;
|
||||
|
||||
FD_ZERO(&fd_socket);
|
||||
FD_SET(gdbserver_socket, &fd_socket);
|
||||
|
||||
struct timeval t;
|
||||
t.tv_sec = 0;
|
||||
t.tv_usec = 0;
|
||||
|
||||
if (select(gdbserver_socket + 1, &fd_socket, nullptr, nullptr, &t) < 0) {
|
||||
LOG_ERROR(Debug_GDBStub, "select failed");
|
||||
return false;
|
||||
}
|
||||
|
||||
return FD_ISSET(gdbserver_socket, &fd_socket);
|
||||
}
|
||||
|
||||
/// Send requested register to gdb client.
|
||||
static void ReadRegister() {
|
||||
static u8 reply[64];
|
||||
memset(reply, 0, sizeof(reply));
|
||||
|
||||
u32 id = HexCharToValue(command_buffer[1]);
|
||||
if (command_buffer[2] != '\0') {
|
||||
id <<= 4;
|
||||
id |= HexCharToValue(command_buffer[2]);
|
||||
}
|
||||
|
||||
if (id >= R0_REGISTER && id <= R15_REGISTER) {
|
||||
IntToHex(reply, Core::g_app_core->GetReg(id));
|
||||
} else if (id == CSPR_REGISTER) {
|
||||
IntToHex(reply, Core::g_app_core->GetCPSR());
|
||||
} else {
|
||||
return SendReply("E01");
|
||||
}
|
||||
|
||||
SendReply(reinterpret_cast<char*>(reply));
|
||||
}
|
||||
|
||||
/// Send all registers to the gdb client.
|
||||
static void ReadRegisters() {
|
||||
static u8 buffer[GDB_BUFFER_SIZE - 4];
|
||||
memset(buffer, 0, sizeof(buffer));
|
||||
|
||||
u8* bufptr = buffer;
|
||||
for (int i = 0; i <= CSPR_REGISTER; i++) {
|
||||
if (i <= R15_REGISTER) {
|
||||
IntToHex(bufptr + i * 8, Core::g_app_core->GetReg(i));
|
||||
} else if (i == CSPR_REGISTER) {
|
||||
IntToHex(bufptr + i * 8, Core::g_app_core->GetCPSR());
|
||||
} else {
|
||||
IntToHex(bufptr + i * 8, 0);
|
||||
IntToHex(bufptr + (i + 1) * 8, 0);
|
||||
i++; // These registers seem to be all 64bit instead of 32bit, so skip two instead of one
|
||||
}
|
||||
}
|
||||
|
||||
SendReply(reinterpret_cast<char*>(buffer));
|
||||
}
|
||||
|
||||
/// Modify data of register specified by gdb client.
|
||||
static void WriteRegister() {
|
||||
u8* buffer_ptr = command_buffer + 3;
|
||||
|
||||
u32 id = HexCharToValue(command_buffer[1]);
|
||||
if (command_buffer[2] != '=') {
|
||||
++buffer_ptr;
|
||||
id <<= 4;
|
||||
id |= HexCharToValue(command_buffer[2]);
|
||||
}
|
||||
|
||||
if (id >= R0_REGISTER && id <= R15_REGISTER) {
|
||||
Core::g_app_core->SetReg(id, HexToInt(buffer_ptr));
|
||||
} else if (id == CSPR_REGISTER) {
|
||||
Core::g_app_core->SetCPSR(HexToInt(buffer_ptr));
|
||||
} else {
|
||||
return SendReply("E01");
|
||||
}
|
||||
|
||||
SendReply("OK");
|
||||
}
|
||||
|
||||
/// Modify all registers with data received from the client.
|
||||
static void WriteRegisters() {
|
||||
u8* buffer_ptr = command_buffer + 1;
|
||||
|
||||
if (command_buffer[0] != 'G')
|
||||
return SendReply("E01");
|
||||
|
||||
for (int i = 0; i <= CSPR_REGISTER; i++) {
|
||||
if (i <= R15_REGISTER) {
|
||||
Core::g_app_core->SetReg(i, HexToInt(buffer_ptr + i * 8));
|
||||
} else if (i == CSPR_REGISTER) {
|
||||
Core::g_app_core->SetCPSR(HexToInt(buffer_ptr + i * 8));
|
||||
} else {
|
||||
i++; // These registers seem to be all 64bit instead of 32bit, so skip two instead of one
|
||||
}
|
||||
}
|
||||
|
||||
SendReply("OK");
|
||||
}
|
||||
|
||||
/// Read location in memory specified by gdb client.
|
||||
static void ReadMemory() {
|
||||
static u8 reply[GDB_BUFFER_SIZE - 4];
|
||||
|
||||
int i = 1;
|
||||
PAddr addr = 0;
|
||||
while (command_buffer[i] != ',') {
|
||||
addr = (addr << 4) | HexCharToValue(command_buffer[i++]);
|
||||
}
|
||||
i++;
|
||||
|
||||
u32 len = 0;
|
||||
while (i < command_length) {
|
||||
len = (len << 4) | HexCharToValue(command_buffer[i++]);
|
||||
}
|
||||
|
||||
if (len * 2 > sizeof(reply)) {
|
||||
SendReply("E01");
|
||||
}
|
||||
|
||||
u8* data = Memory::GetPointer(addr);
|
||||
if (!data) {
|
||||
return SendReply("E0");
|
||||
}
|
||||
|
||||
MemToHex(reply, data, len);
|
||||
reply[len * 2] = '\0';
|
||||
SendReply(reinterpret_cast<char*>(reply));
|
||||
}
|
||||
|
||||
/// Modify location in memory with data received from the gdb client.
|
||||
static void WriteMemory() {
|
||||
int i = 1;
|
||||
PAddr addr = 0;
|
||||
while (command_buffer[i] != ',') {
|
||||
addr = (addr << 4) | HexCharToValue(command_buffer[i++]);
|
||||
}
|
||||
i++;
|
||||
|
||||
u32 len = 0;
|
||||
while (command_buffer[i] != ':') {
|
||||
len = (len << 4) | HexCharToValue(command_buffer[i++]);
|
||||
}
|
||||
|
||||
u8* dst = Memory::GetPointer(addr);
|
||||
if (!dst) {
|
||||
return SendReply("E00");
|
||||
}
|
||||
|
||||
HexToMem(dst, command_buffer + i + 1, len);
|
||||
SendReply("OK");
|
||||
}
|
||||
|
||||
void Break(bool is_memory_break) {
|
||||
if (!halt_loop) {
|
||||
halt_loop = true;
|
||||
send_signal = 1;
|
||||
SendSignal(SIGTRAP);
|
||||
}
|
||||
|
||||
memory_break = is_memory_break;
|
||||
}
|
||||
|
||||
/// Tell the CPU that it should perform a single step.
|
||||
static void Step() {
|
||||
step_loop = true;
|
||||
halt_loop = true;
|
||||
send_signal = 1;
|
||||
step_break = 1;
|
||||
SendSignal(SIGTRAP);
|
||||
}
|
||||
|
||||
bool IsMemoryBreak() {
|
||||
if (IsConnected()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return memory_break;
|
||||
}
|
||||
|
||||
/// Tell the CPU to continue executing.
|
||||
static void Continue() {
|
||||
memory_break = false;
|
||||
step_break = 0;
|
||||
step_loop = false;
|
||||
halt_loop = false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Commit breakpoint to list of breakpoints.
|
||||
*
|
||||
* @param type Type of breakpoint.
|
||||
* @param addr Address of breakpoint.
|
||||
* @param len Length of breakpoint.
|
||||
*/
|
||||
bool CommitBreakpoint(BreakpointType type, PAddr addr, u32 len) {
|
||||
std::map<u32, Breakpoint>& p = GetBreakpointList(type);
|
||||
|
||||
Breakpoint breakpoint;
|
||||
breakpoint.active = true;
|
||||
breakpoint.addr = addr;
|
||||
breakpoint.len = len;
|
||||
p.insert({ addr, breakpoint });
|
||||
|
||||
LOG_DEBUG(Debug_GDBStub, "gdb: added %d breakpoint: %08x bytes at %08x\n", type, breakpoint.len, breakpoint.addr);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/// Handle add breakpoint command from gdb client.
|
||||
static void AddBreakpoint() {
|
||||
BreakpointType type;
|
||||
|
||||
u8 type_id = HexCharToValue(command_buffer[1]);
|
||||
switch (type_id) {
|
||||
case 0:
|
||||
case 1:
|
||||
type = BreakpointType::Execute;
|
||||
break;
|
||||
case 2:
|
||||
type = BreakpointType::Write;
|
||||
break;
|
||||
case 3:
|
||||
type = BreakpointType::Read;
|
||||
break;
|
||||
case 4:
|
||||
type = BreakpointType::Access;
|
||||
break;
|
||||
default:
|
||||
return SendReply("E01");
|
||||
}
|
||||
|
||||
int i = 3;
|
||||
PAddr addr = 0;
|
||||
while (command_buffer[i] != ',') {
|
||||
addr = addr << 4 | HexCharToValue(command_buffer[i++]);
|
||||
}
|
||||
i++;
|
||||
|
||||
u32 len = 0;
|
||||
while (i < command_length) {
|
||||
len = len << 4 | HexCharToValue(command_buffer[i++]);
|
||||
}
|
||||
|
||||
if (type == BreakpointType::Access) {
|
||||
// Access is made up of Read and Write types, so add both breakpoints
|
||||
type = BreakpointType::Read;
|
||||
|
||||
if (!CommitBreakpoint(type, addr, len)) {
|
||||
return SendReply("E02");
|
||||
}
|
||||
|
||||
type = BreakpointType::Write;
|
||||
}
|
||||
|
||||
if (!CommitBreakpoint(type, addr, len)) {
|
||||
return SendReply("E02");
|
||||
}
|
||||
|
||||
SendReply("OK");
|
||||
}
|
||||
|
||||
/// Handle remove breakpoint command from gdb client.
|
||||
static void RemoveBreakpoint() {
|
||||
BreakpointType type;
|
||||
|
||||
u8 type_id = HexCharToValue(command_buffer[1]);
|
||||
switch (type_id) {
|
||||
case 0:
|
||||
case 1:
|
||||
type = BreakpointType::Execute;
|
||||
break;
|
||||
case 2:
|
||||
type = BreakpointType::Write;
|
||||
break;
|
||||
case 3:
|
||||
type = BreakpointType::Read;
|
||||
break;
|
||||
case 4:
|
||||
type = BreakpointType::Access;
|
||||
break;
|
||||
default:
|
||||
return SendReply("E01");
|
||||
}
|
||||
|
||||
int i = 3;
|
||||
PAddr addr = 0;
|
||||
while (command_buffer[i] != ',') {
|
||||
addr = (addr << 4) | HexCharToValue(command_buffer[i++]);
|
||||
}
|
||||
i++;
|
||||
|
||||
u32 len = 0;
|
||||
while (i < command_length) {
|
||||
len = (len << 4) | HexCharToValue(command_buffer[i++]);
|
||||
}
|
||||
|
||||
if (type == BreakpointType::Access) {
|
||||
// Access is made up of Read and Write types, so add both breakpoints
|
||||
type = BreakpointType::Read;
|
||||
RemoveBreakpoint(type, addr);
|
||||
|
||||
type = BreakpointType::Write;
|
||||
}
|
||||
|
||||
RemoveBreakpoint(type, addr);
|
||||
SendReply("OK");
|
||||
}
|
||||
|
||||
void HandlePacket() {
|
||||
if (!IsConnected()) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (!IsDataAvailable()) {
|
||||
return;
|
||||
}
|
||||
|
||||
ReadCommand();
|
||||
if (command_length == 0) {
|
||||
return;
|
||||
}
|
||||
|
||||
LOG_DEBUG(Debug_GDBStub, "Packet: %s", command_buffer);
|
||||
|
||||
switch (command_buffer[0]) {
|
||||
case 'q':
|
||||
HandleQuery();
|
||||
break;
|
||||
case 'H':
|
||||
HandleSetThread();
|
||||
break;
|
||||
case '?':
|
||||
HandleSignal();
|
||||
break;
|
||||
case 'k':
|
||||
Deinit();
|
||||
LOG_INFO(Debug_GDBStub, "killed by gdb");
|
||||
return;
|
||||
case 'g':
|
||||
ReadRegisters();
|
||||
break;
|
||||
case 'G':
|
||||
WriteRegisters();
|
||||
break;
|
||||
case 'p':
|
||||
ReadRegister();
|
||||
break;
|
||||
case 'P':
|
||||
WriteRegister();
|
||||
break;
|
||||
case 'm':
|
||||
ReadMemory();
|
||||
break;
|
||||
case 'M':
|
||||
WriteMemory();
|
||||
break;
|
||||
case 's':
|
||||
Step();
|
||||
return;
|
||||
case 'C':
|
||||
case 'c':
|
||||
Continue();
|
||||
return;
|
||||
case 'z':
|
||||
RemoveBreakpoint();
|
||||
break;
|
||||
case 'Z':
|
||||
AddBreakpoint();
|
||||
break;
|
||||
default:
|
||||
SendReply("");
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void SetServerPort(u16 port) {
|
||||
gdbstub_port = port;
|
||||
}
|
||||
|
||||
void ToggleServer(bool status) {
|
||||
if (status) {
|
||||
g_server_enabled = status;
|
||||
|
||||
// Start server
|
||||
if (!IsConnected() && Core::g_sys_core != nullptr) {
|
||||
Init();
|
||||
}
|
||||
}
|
||||
else {
|
||||
// Stop server
|
||||
if (IsConnected()) {
|
||||
Deinit();
|
||||
}
|
||||
|
||||
g_server_enabled = status;
|
||||
}
|
||||
}
|
||||
|
||||
void Init(u16 port) {
|
||||
if (!g_server_enabled) {
|
||||
// Set the halt loop to false in case the user enabled the gdbstub mid-execution.
|
||||
// This way the CPU can still execute normally.
|
||||
halt_loop = false;
|
||||
step_loop = false;
|
||||
return;
|
||||
}
|
||||
|
||||
// Setup initial gdbstub status
|
||||
halt_loop = true;
|
||||
step_loop = false;
|
||||
|
||||
breakpoints_execute.clear();
|
||||
breakpoints_read.clear();
|
||||
breakpoints_write.clear();
|
||||
|
||||
// Start gdb server
|
||||
LOG_INFO(Debug_GDBStub, "Starting GDB server on port %d...", port);
|
||||
|
||||
sockaddr_in saddr_server = {};
|
||||
saddr_server.sin_family = AF_INET;
|
||||
saddr_server.sin_port = htons(port);
|
||||
saddr_server.sin_addr.s_addr = INADDR_ANY;
|
||||
|
||||
#ifdef _WIN32
|
||||
WSAStartup(MAKEWORD(2, 2), &InitData);
|
||||
#endif
|
||||
|
||||
int tmpsock = socket(PF_INET, SOCK_STREAM, 0);
|
||||
if (tmpsock == -1) {
|
||||
LOG_ERROR(Debug_GDBStub, "Failed to create gdb socket");
|
||||
}
|
||||
|
||||
const sockaddr* server_addr = reinterpret_cast<const sockaddr*>(&saddr_server);
|
||||
socklen_t server_addrlen = sizeof(saddr_server);
|
||||
if (bind(tmpsock, server_addr, server_addrlen) < 0) {
|
||||
LOG_ERROR(Debug_GDBStub, "Failed to bind gdb socket");
|
||||
}
|
||||
|
||||
if (listen(tmpsock, 1) < 0) {
|
||||
LOG_ERROR(Debug_GDBStub, "Failed to listen to gdb socket");
|
||||
}
|
||||
|
||||
// Wait for gdb to connect
|
||||
LOG_INFO(Debug_GDBStub, "Waiting for gdb to connect...\n");
|
||||
sockaddr_in saddr_client;
|
||||
sockaddr* client_addr = reinterpret_cast<sockaddr*>(&saddr_client);
|
||||
socklen_t client_addrlen = sizeof(saddr_client);
|
||||
gdbserver_socket = accept(tmpsock, client_addr, &client_addrlen);
|
||||
if (gdbserver_socket < 0) {
|
||||
// In the case that we couldn't start the server for whatever reason, just start CPU execution like normal.
|
||||
halt_loop = false;
|
||||
step_loop = false;
|
||||
|
||||
LOG_ERROR(Debug_GDBStub, "Failed to accept gdb client");
|
||||
}
|
||||
else {
|
||||
LOG_INFO(Debug_GDBStub, "Client connected.\n");
|
||||
saddr_client.sin_addr.s_addr = ntohl(saddr_client.sin_addr.s_addr);
|
||||
}
|
||||
|
||||
// Clean up temporary socket if it's still alive at this point.
|
||||
if (tmpsock != -1) {
|
||||
shutdown(tmpsock, SHUT_RDWR);
|
||||
}
|
||||
}
|
||||
|
||||
void Init() {
|
||||
Init(gdbstub_port);
|
||||
}
|
||||
|
||||
void Deinit() {
|
||||
if (!g_server_enabled) {
|
||||
return;
|
||||
}
|
||||
|
||||
LOG_INFO(Debug_GDBStub, "Stopping GDB ...");
|
||||
if (gdbserver_socket != -1) {
|
||||
shutdown(gdbserver_socket, SHUT_RDWR);
|
||||
gdbserver_socket = -1;
|
||||
}
|
||||
|
||||
#ifdef _WIN32
|
||||
WSACleanup();
|
||||
#endif
|
||||
|
||||
LOG_INFO(Debug_GDBStub, "GDB stopped.");
|
||||
}
|
||||
|
||||
bool IsConnected() {
|
||||
return g_server_enabled && gdbserver_socket != -1;
|
||||
}
|
||||
|
||||
bool GetCpuHaltFlag() {
|
||||
return halt_loop;
|
||||
}
|
||||
|
||||
bool GetCpuStepFlag() {
|
||||
return step_loop;
|
||||
}
|
||||
|
||||
void SetCpuStepFlag(bool is_step) {
|
||||
step_loop = is_step;
|
||||
}
|
||||
|
||||
};
|
||||
89
src/core/gdbstub/gdbstub.h
Normal file
89
src/core/gdbstub/gdbstub.h
Normal file
|
|
@ -0,0 +1,89 @@
|
|||
// Copyright 2013 Dolphin Emulator Project
|
||||
// Licensed under GPLv2+
|
||||
// Refer to the license.txt file included.
|
||||
|
||||
// Originally written by Sven Peter <sven@fail0verflow.com> for anergistic.
|
||||
|
||||
#pragma once
|
||||
#include <atomic>
|
||||
|
||||
namespace GDBStub {
|
||||
|
||||
/// Breakpoint Method
|
||||
enum class BreakpointType {
|
||||
None, ///< None
|
||||
Execute, ///< Execution Breakpoint
|
||||
Read, ///< Read Breakpoint
|
||||
Write, ///< Write Breakpoint
|
||||
Access ///< Access (R/W) Breakpoint
|
||||
};
|
||||
|
||||
/// If set to false, the server will never be started and no gdbstub-related functions will be executed.
|
||||
extern std::atomic<bool> g_server_enabled;
|
||||
|
||||
/**
|
||||
* Set the port the gdbstub should use to listen for connections.
|
||||
*
|
||||
* @param port Port to listen for connection
|
||||
*/
|
||||
void SetServerPort(u16 port);
|
||||
|
||||
/**
|
||||
* Set the g_server_enabled flag and start or stop the server if possible.
|
||||
*
|
||||
* @param status Set the server to enabled or disabled.
|
||||
*/
|
||||
void ToggleServer(bool status);
|
||||
|
||||
/// Start the gdbstub server.
|
||||
void Init();
|
||||
|
||||
/// Stop gdbstub server.
|
||||
void Deinit();
|
||||
|
||||
/// Returns true if there is an active socket connection.
|
||||
bool IsConnected();
|
||||
|
||||
/**
|
||||
* Signal to the gdbstub server that it should halt CPU execution.
|
||||
*
|
||||
* @param is_memory_break If true, the break resulted from a memory breakpoint.
|
||||
*/
|
||||
void Break(bool is_memory_break = false);
|
||||
|
||||
/// Determine if there was a memory breakpoint.
|
||||
bool IsMemoryBreak();
|
||||
|
||||
/// Read and handle packet from gdb client.
|
||||
void HandlePacket();
|
||||
|
||||
/**
|
||||
* Get the nearest breakpoint of the specified type at the given address.
|
||||
*
|
||||
* @param addr Address to search from.
|
||||
* @param type Type of breakpoint.
|
||||
*/
|
||||
PAddr GetNextBreakpointFromAddress(u32 addr, GDBStub::BreakpointType type);
|
||||
|
||||
/**
|
||||
* Check if a breakpoint of the specified type exists at the given address.
|
||||
*
|
||||
* @param addr Address of breakpoint.
|
||||
* @param type Type of breakpoint.
|
||||
*/
|
||||
bool CheckBreakpoint(u32 addr, GDBStub::BreakpointType type);
|
||||
|
||||
// If set to true, the CPU will halt at the beginning of the next CPU loop.
|
||||
bool GetCpuHaltFlag();
|
||||
|
||||
// If set to true and the CPU is halted, the CPU will step one instruction.
|
||||
bool GetCpuStepFlag();
|
||||
|
||||
/**
|
||||
* When set to true, the CPU will step one instruction when the CPU is halted next.
|
||||
*
|
||||
* @param is_step
|
||||
*/
|
||||
void SetCpuStepFlag(bool is_step);
|
||||
|
||||
}
|
||||
|
|
@ -6,6 +6,7 @@
|
|||
|
||||
#include <string>
|
||||
#include <array>
|
||||
#include <common/file_util.h>
|
||||
|
||||
namespace Settings {
|
||||
|
||||
|
|
@ -60,6 +61,10 @@ struct Values {
|
|||
float bg_blue;
|
||||
|
||||
std::string log_filter;
|
||||
|
||||
// Debugging
|
||||
bool use_gdbstub;
|
||||
u16 gdbstub_port;
|
||||
} extern values;
|
||||
|
||||
}
|
||||
|
|
|
|||
|
|
@ -12,6 +12,8 @@
|
|||
|
||||
#include "video_core/video_core.h"
|
||||
|
||||
#include "core/gdbstub/gdbstub.h"
|
||||
|
||||
namespace System {
|
||||
|
||||
void Init(EmuWindow* emu_window) {
|
||||
|
|
@ -22,9 +24,13 @@ void Init(EmuWindow* emu_window) {
|
|||
Kernel::Init();
|
||||
HLE::Init();
|
||||
VideoCore::Init(emu_window);
|
||||
|
||||
GDBStub::Init();
|
||||
}
|
||||
|
||||
void Shutdown() {
|
||||
GDBStub::Deinit();
|
||||
|
||||
VideoCore::Shutdown();
|
||||
HLE::Shutdown();
|
||||
Kernel::Shutdown();
|
||||
|
|
|
|||
Loading…
Reference in a new issue