Add GDB target IO support (called Host I/O by gdb), not working yet

sysmodules/rosalina/include/gdb.h

@@ -33,10 +33,14 @@
 #include "pmdbgext.h"
 #include "sock_util.h"
 #include "memory.h"
+#include "ifile.h"
 
 #define MAX_DEBUG           3
 #define MAX_DEBUG_THREAD    127
 #define MAX_BREAKPOINT      256
+
+#define MAX_TIO_OPEN_FILE   64
+
 // 512+24 is the ideal size as IDA will try to read exactly 0x100 bytes at a time. Add 4 to this, for $#<checksum>, see below.
 // IDA seems to want additional bytes as well.
 // 1024 is fine enough to put all regs in the 'T' stop reply packets
@@ -76,6 +80,12 @@ typedef struct PackedGdbHioRequest
     bool ctrlC;
 } PackedGdbHioRequest;
 
+typedef struct GdbTioFileInfo
+{
+    IFile f;
+    int flags;
+} GdbTioFileInfo;
+
 enum
 {
     GDB_FLAG_SELECTED = 1,
@@ -149,6 +159,9 @@ typedef struct GDBContext
     u32 currentHioRequestTargetAddr;
     PackedGdbHioRequest currentHioRequest;
 
+    GdbTioFileInfo openTioFileInfos[MAX_TIO_OPEN_FILE];
+    u32 numOpenTioFiles;
+
     bool enableExternalMemoryAccess;
     char *commandData, *commandEnd;
     int latestSentPacketSize;

sysmodules/rosalina/include/gdb/net.h

@@ -33,6 +33,7 @@
 u8 GDB_ComputeChecksum(const char *packetData, u32 len);
 void GDB_EncodeHex(char *dst, const void *src, u32 len);
 u32 GDB_DecodeHex(void *dst, const char *src, u32 len);
+u32 GDB_EscapeBinaryData(void *dst, const void *src, u32 len, u32 maxLen);
 u32 GDB_UnescapeBinaryData(void *dst, const void *src, u32 len);
 const char *GDB_ParseIntegerList(u32 *dst, const char *src, u32 nb, char sep, char lastSep, u32 base, bool allowPrefix);
 const char *GDB_ParseHexIntegerList(u32 *dst, const char *src, u32 nb, char lastSep);

sysmodules/rosalina/include/gdb/tio.h

@@ -0,0 +1,31 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016-2019 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that 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/>.
+*
+*   Additional Terms 7.b and 7.c of GPLv3 apply to this file:
+*       * Requiring preservation of specified reasonable legal notices or
+*         author attributions in that material or in the Appropriate Legal
+*         Notices displayed by works containing it.
+*       * Prohibiting misrepresentation of the origin of that material,
+*         or requiring that modified versions of such material be marked in
+*         reasonable ways as different from the original version.
+*/
+
+#pragma once
+
+#include "gdb.h"
+
+GDB_DECLARE_VERBOSE_HANDLER(File);