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gdbstub: add ams monitor commands

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This commit is contained in:
Liam 2022-11-10 19:17:54 -05:00
parent ceb829cc33
commit 18123ff958
3 changed files with 155 additions and 0 deletions
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151
src/core/debugger/gdbstub.cpp
View File

@ -606,6 +606,8 @@ void GDBStub::HandleQuery(std::string_view command) {
} else if (command.starts_with("StartNoAckMode")) {
no_ack = true;
SendReply(GDB_STUB_REPLY_OK);
} else if (command.starts_with("Rcmd,")) {
HandleRcmd(Common::HexStringToVector(command.substr(5), false));
} else {
SendReply(GDB_STUB_REPLY_EMPTY);
}
@ -645,6 +647,155 @@ void GDBStub::HandleVCont(std::string_view command, std::vector<DebuggerAction>&
}
}
constexpr std::array<std::pair<const char*, Kernel::Svc::MemoryState>, 22> MemoryStateNames{{
{"----- Free -----", Kernel::Svc::MemoryState::Free},
{"Io ", Kernel::Svc::MemoryState::Io},
{"Static ", Kernel::Svc::MemoryState::Static},
{"Code ", Kernel::Svc::MemoryState::Code},
{"CodeData ", Kernel::Svc::MemoryState::CodeData},
{"Normal ", Kernel::Svc::MemoryState::Normal},
{"Shared ", Kernel::Svc::MemoryState::Shared},
{"AliasCode ", Kernel::Svc::MemoryState::AliasCode},
{"AliasCodeData ", Kernel::Svc::MemoryState::AliasCodeData},
{"Ipc ", Kernel::Svc::MemoryState::Ipc},
{"Stack ", Kernel::Svc::MemoryState::Stack},
{"ThreadLocal ", Kernel::Svc::MemoryState::ThreadLocal},
{"Transfered ", Kernel::Svc::MemoryState::Transfered},
{"SharedTransfered", Kernel::Svc::MemoryState::SharedTransfered},
{"SharedCode ", Kernel::Svc::MemoryState::SharedCode},
{"Inaccessible ", Kernel::Svc::MemoryState::Inaccessible},
{"NonSecureIpc ", Kernel::Svc::MemoryState::NonSecureIpc},
{"NonDeviceIpc ", Kernel::Svc::MemoryState::NonDeviceIpc},
{"Kernel ", Kernel::Svc::MemoryState::Kernel},
{"GeneratedCode ", Kernel::Svc::MemoryState::GeneratedCode},
{"CodeOut ", Kernel::Svc::MemoryState::CodeOut},
{"Coverage ", Kernel::Svc::MemoryState::Coverage},
}};
static constexpr const char* GetMemoryStateName(Kernel::Svc::MemoryState state) {
for (size_t i = 0; i < MemoryStateNames.size(); i++) {
if (std::get<1>(MemoryStateNames[i]) == state) {
return std::get<0>(MemoryStateNames[i]);
}
}
return "Unknown ";
}
static constexpr const char* GetMemoryPermissionString(const Kernel::Svc::MemoryInfo& info) {
if (info.state == Kernel::Svc::MemoryState::Free) {
return " ";
}
switch (info.permission) {
case Kernel::Svc::MemoryPermission::ReadExecute:
return "r-x";
case Kernel::Svc::MemoryPermission::Read:
return "r--";
case Kernel::Svc::MemoryPermission::ReadWrite:
return "rw-";
default:
return "---";
}
}
static VAddr GetModuleEnd(Kernel::KPageTable& page_table, VAddr base) {
Kernel::Svc::MemoryInfo mem_info;
VAddr cur_addr{base};
// Expect: r-x Code (.text)
mem_info = page_table.QueryInfo(cur_addr).GetSvcMemoryInfo();
cur_addr = mem_info.base_address + mem_info.size;
if (mem_info.state != Kernel::Svc::MemoryState::Code ||
mem_info.permission != Kernel::Svc::MemoryPermission::ReadExecute) {
return cur_addr - 1;
}
// Expect: r-- Code (.rodata)
mem_info = page_table.QueryInfo(cur_addr).GetSvcMemoryInfo();
cur_addr = mem_info.base_address + mem_info.size;
if (mem_info.state != Kernel::Svc::MemoryState::Code ||
mem_info.permission != Kernel::Svc::MemoryPermission::Read) {
return cur_addr - 1;
}
// Expect: rw- CodeData (.data)
mem_info = page_table.QueryInfo(cur_addr).GetSvcMemoryInfo();
cur_addr = mem_info.base_address + mem_info.size;
return cur_addr - 1;
}
void GDBStub::HandleRcmd(const std::vector<u8>& command) {
std::string_view command_str{reinterpret_cast<const char*>(&command[0]), command.size()};
std::string reply;
auto* process = system.CurrentProcess();
auto& page_table = process->PageTable();
if (command_str == "get info") {
Loader::AppLoader::Modules modules;
system.GetAppLoader().ReadNSOModules(modules);
reply = fmt::format("Process: {:#x} ({})\n"
"Program Id: {:#018x}\n",
process->GetProcessID(), process->GetName(), process->GetProgramID());
reply +=
fmt::format("Layout:\n"
" Alias: {:#012x} - {:#012x}\n"
" Heap: {:#012x} - {:#012x}\n"
" Aslr: {:#012x} - {:#012x}\n"
" Stack: {:#012x} - {:#012x}\n"
"Modules:\n",
page_table.GetAliasRegionStart(), page_table.GetAliasRegionEnd(),
page_table.GetHeapRegionStart(), page_table.GetHeapRegionEnd(),
page_table.GetAliasCodeRegionStart(), page_table.GetAliasCodeRegionEnd(),
page_table.GetStackRegionStart(), page_table.GetStackRegionEnd());
for (const auto& [vaddr, name] : modules) {
reply += fmt::format(" {:#012x} - {:#012x} {}\n", vaddr,
GetModuleEnd(page_table, vaddr), name);
}
} else if (command_str == "get mappings") {
reply = "Mappings:\n";
VAddr cur_addr = 0;
while (true) {
using MemoryAttribute = Kernel::Svc::MemoryAttribute;
auto mem_info = page_table.QueryInfo(cur_addr).GetSvcMemoryInfo();
if (mem_info.state != Kernel::Svc::MemoryState::Inaccessible ||
mem_info.base_address + mem_info.size - 1 != std::numeric_limits<u64>::max()) {
const char* state = GetMemoryStateName(mem_info.state);
const char* perm = GetMemoryPermissionString(mem_info);
const char l = True(mem_info.attribute & MemoryAttribute::Locked) ? 'L' : '-';
const char i = True(mem_info.attribute & MemoryAttribute::IpcLocked) ? 'I' : '-';
const char d = True(mem_info.attribute & MemoryAttribute::DeviceShared) ? 'D' : '-';
const char u = True(mem_info.attribute & MemoryAttribute::Uncached) ? 'U' : '-';
reply +=
fmt::format(" {:#012x} - {:#012x} {} {} {}{}{}{} [{}, {}]\n",
mem_info.base_address, mem_info.base_address + mem_info.size - 1,
perm, state, l, i, d, u, mem_info.ipc_count, mem_info.device_count);
}
const uintptr_t next_address = mem_info.base_address + mem_info.size;
if (next_address <= cur_addr) {
break;
}
cur_addr = next_address;
}
} else if (command_str == "help") {
reply = "Commands:\n get info\n get mappings\n";
} else {
reply = "Unknown command.\nCommands:\n get info\n get mappings\n";
}
std::span<const u8> reply_span{reinterpret_cast<u8*>(&reply.front()), reply.size()};
SendReply(Common::HexToString(reply_span, false));
}
Kernel::KThread* GDBStub::GetThreadByID(u64 thread_id) {
const auto& threads{system.GlobalSchedulerContext().GetThreadList()};
for (auto* thread : threads) {

1
src/core/debugger/gdbstub.h
View File

@ -32,6 +32,7 @@ private:
void ExecuteCommand(std::string_view packet, std::vector<DebuggerAction>& actions);
void HandleVCont(std::string_view command, std::vector<DebuggerAction>& actions);
void HandleQuery(std::string_view command);
void HandleRcmd(const std::vector<u8>& command);
void HandleBreakpointInsert(std::string_view command);
void HandleBreakpointRemove(std::string_view command);
std::vector<char>::const_iterator CommandEnd() const;

3
src/core/hle/kernel/k_page_table.h
View File

@ -320,6 +320,9 @@ public:
constexpr VAddr GetAliasCodeRegionStart() const {
return m_alias_code_region_start;
}
constexpr VAddr GetAliasCodeRegionEnd() const {
return m_alias_code_region_end;
}
constexpr VAddr GetAliasCodeRegionSize() const {
return m_alias_code_region_end - m_alias_code_region_start;
}