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dmnt: enable experimental standalone usage of gdbstub, while starlink is in dev

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Michael Scire 2021-10-31 15:47:08 -07:00 • committed by SciresM
parent 5eabca7f04
commit 4489513f7c
22 changed files with 464 additions and 68 deletions
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196
stratosphere/dmnt.gen2/source/dmnt2_transport_layer.cpp Normal file
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/*
* Copyright (c) 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/>.
*/
#include <stratosphere.hpp>
#include "dmnt2_transport_layer.hpp"
namespace ams::dmnt::transport {
namespace {
enum SocketMode {
SocketMode_Invalid,
SocketMode_Htcs,
SocketMode_Tcp,
};
constexpr inline const u16 ListenPort_GdbServer = 22225;
constexpr inline const u16 ListenPort_GdbDebugLog = 22227;
constinit os::SdkMutex g_socket_init_mutex;
constinit SocketMode g_socket_mode = SocketMode_Invalid;
constexpr inline size_t RequiredAlignment = std::max(os::ThreadStackAlignment, os::MemoryPageSize);
using SocketConfigType = socket::SystemConfigLightDefault;
/* TODO: If we ever use resolvers, increase this. */
constexpr inline size_t SocketAllocatorSize = 4_KB;
constexpr inline size_t SocketMemoryPoolSize = util::AlignUp(SocketConfigType::PerTcpSocketWorstCaseMemoryPoolSize + SocketConfigType::PerUdpSocketWorstCaseMemoryPoolSize, os::MemoryPageSize);
constexpr inline size_t SocketRequiredSize = util::AlignUp(SocketMemoryPoolSize + SocketAllocatorSize, os::MemoryPageSize);
/* Declare the memory pool. */
alignas(RequiredAlignment) constinit u8 g_socket_memory[SocketRequiredSize];
constexpr inline const SocketConfigType SocketConfig(g_socket_memory, SocketRequiredSize, SocketAllocatorSize, 2);
}
void InitializeByHtcs() {
std::scoped_lock lk(g_socket_init_mutex);
AMS_ABORT_UNLESS(g_socket_mode == SocketMode_Invalid);
constexpr auto HtcsSocketCountMax = 8;
const size_t buffer_size = htcs::GetWorkingMemorySize(HtcsSocketCountMax);
AMS_ABORT_UNLESS(sizeof(g_socket_memory) >= buffer_size);
htcs::InitializeForSystem(g_socket_memory, sizeof(g_socket_memory), HtcsSocketCountMax);
g_socket_mode = SocketMode_Htcs;
}
void InitializeByTcp() {
std::scoped_lock lk(g_socket_init_mutex);
AMS_ABORT_UNLESS(g_socket_mode == SocketMode_Invalid);
R_ABORT_UNLESS(socket::Initialize(SocketConfig));
g_socket_mode = SocketMode_Tcp;
}
s32 Socket() {
switch (g_socket_mode) {
case SocketMode_Htcs: return htcs::Socket();
case SocketMode_Tcp: return socket::Socket(socket::Family::Af_Inet, socket::Type::Sock_Stream, socket::Protocol::IpProto_Tcp);
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
s32 Close(s32 desc) {
switch (g_socket_mode) {
case SocketMode_Htcs: return htcs::Close(desc);
case SocketMode_Tcp: return socket::Close(desc);
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
s32 Bind(s32 desc, PortName port_name) {
switch (g_socket_mode) {
case SocketMode_Htcs:
{
htcs::SockAddrHtcs addr;
addr.family = htcs::HTCS_AF_HTCS;
addr.peer_name = htcs::GetPeerNameAny();
switch (port_name) {
case PortName_GdbServer: std::strcpy(addr.port_name.name, "iywys@$gdb"); break;
case PortName_GdbDebugLog: std::strcpy(addr.port_name.name, "iywys@$dmnt2_log"); break;
AMS_UNREACHABLE_DEFAULT_CASE();
}
return htcs::Bind(desc, std::addressof(addr));
}
break;
case SocketMode_Tcp:
{
socket::SockAddrIn addr = {};
addr.sin_family = socket::Family::Af_Inet;
addr.sin_addr.s_addr = socket::InAddr_Any;
switch (port_name){
case PortName_GdbServer: addr.sin_port = socket::InetHtons(static_cast<u16>(ListenPort_GdbServer)); break;
case PortName_GdbDebugLog: addr.sin_port = socket::InetHtons(static_cast<u16>(ListenPort_GdbDebugLog)); break;
AMS_UNREACHABLE_DEFAULT_CASE();
}
return socket::Bind(desc, reinterpret_cast<socket::SockAddr *>(std::addressof(addr)), sizeof(addr));
}
break;
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
s32 Listen(s32 desc, s32 backlog_count) {
switch (g_socket_mode) {
case SocketMode_Htcs: return htcs::Listen(desc, backlog_count);
case SocketMode_Tcp: return socket::Listen(desc, backlog_count);
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
s32 Accept(s32 desc) {
switch (g_socket_mode) {
case SocketMode_Htcs:
{
htcs::SockAddrHtcs addr;
addr.family = htcs::HTCS_AF_HTCS;
addr.peer_name = htcs::GetPeerNameAny();
addr.port_name.name[0] = '\x00';
return htcs::Accept(desc, std::addressof(addr));
}
break;
case SocketMode_Tcp:
{
socket::SockAddrIn addr = {};
socket::SockLenT addr_len = sizeof(addr);
return socket::Accept(desc, reinterpret_cast<socket::SockAddr *>(std::addressof(addr)), std::addressof(addr_len));
}
break;
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
s32 Shutdown(s32 desc) {
switch (g_socket_mode) {
case SocketMode_Htcs: return htcs::Shutdown(desc, htcs::HTCS_SHUT_RDWR);
case SocketMode_Tcp: return socket::Shutdown(desc, socket::ShutdownMethod::Shut_RdWr);
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
ssize_t Recv(s32 desc, void *buffer, size_t buffer_size, s32 flags) {
switch (g_socket_mode) {
case SocketMode_Htcs: return htcs::Recv(desc, buffer, buffer_size, flags);
case SocketMode_Tcp: return socket::Recv(desc, buffer, buffer_size, static_cast<socket::MsgFlag>(flags));
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
ssize_t Send(s32 desc, const void *buffer, size_t buffer_size, s32 flags) {
switch (g_socket_mode) {
case SocketMode_Htcs: return htcs::Send(desc, buffer, buffer_size, flags);
case SocketMode_Tcp: return socket::Send(desc, buffer, buffer_size, static_cast<socket::MsgFlag>(flags));
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
s32 GetLastError() {
switch (g_socket_mode) {
case SocketMode_Htcs: return htcs::GetLastError();
case SocketMode_Tcp: return static_cast<s32>(socket::GetLastError());
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
bool IsLastErrorEAgain() {
switch (g_socket_mode) {
case SocketMode_Htcs: return htcs::GetLastError() == htcs::HTCS_EAGAIN;
case SocketMode_Tcp: return socket::GetLastError() == socket::Errno::EAgain;
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
}