gdb: add support to run new processes

Only titleId [mediaType [launchFlags]] is supported, and the launched title shouldn't rely on APT and all 3 parameters should be hex-encoded.

usage example, with titleId+mediaType:
(gdb) set remote file-exec 0004013000003702
(gdb) r 0

sysmodules/rosalina/include/gdb.h

@@ -30,6 +30,7 @@
 #include <3ds/svc.h>
 #include <3ds/synchronization.h>
 #include <3ds/result.h>
+#include "pmdbgext.h"
 #include "sock_util.h"
 #include "memory.h"
 
@@ -64,17 +65,19 @@ enum
     GDB_FLAG_ALLOCATED_MASK = GDB_FLAG_SELECTED | GDB_FLAG_USED,
     GDB_FLAG_EXTENDED_REMOTE = 4,
     GDB_FLAG_NOACK = 8,
+    GDB_FLAG_PROC_RESTART_MASK = GDB_FLAG_NOACK | GDB_FLAG_EXTENDED_REMOTE | GDB_FLAG_USED,
     GDB_FLAG_PROCESS_CONTINUING = 16,
     GDB_FLAG_TERMINATE_PROCESS = 32,
     GDB_FLAG_ATTACHED_AT_START = 64,
+    GDB_FLAG_CREATED = 128,
 };
 
 typedef enum GDBState
 {
     GDB_STATE_DISCONNECTED,
     GDB_STATE_CONNECTED,
-    GDB_STATE_NOACK_SENT,
-    GDB_STATE_DETACHING
+    GDB_STATE_ATTACHED,
+    GDB_STATE_DETACHING,
 } GDBState;
 
 typedef struct ThreadInfo
@@ -95,9 +98,15 @@ typedef struct GDBContext
 
     u32 flags;
     GDBState state;
+    bool noAckSent;
 
     u32 pid;
     Handle debug;
+
+    // vRun and R (restart) info:
+    FS_ProgramInfo launchedProgramInfo;
+    u32 launchedProgramLaunchFlags;
+
     ThreadInfo threadInfos[MAX_DEBUG_THREAD];
     u32 nbThreads;
     u32 currentThreadId, selectedThreadId, selectedThreadIdForContinuing;
@@ -138,6 +147,7 @@ void GDB_FinalizeContext(GDBContext *ctx);
 
 Result GDB_AttachToProcess(GDBContext *ctx);
 void GDB_DetachFromProcess(GDBContext *ctx);
+Result GDB_CreateProcess(GDBContext *ctx, const FS_ProgramInfo *progInfo, u32 launchFlags);
 
 GDB_DECLARE_HANDLER(Unsupported);
 GDB_DECLARE_HANDLER(EnableExtendedMode);

sysmodules/rosalina/include/gdb/debug.h

@@ -28,6 +28,8 @@
 
 #include "gdb.h"
 
+GDB_DECLARE_VERBOSE_HANDLER(Run);
+GDB_DECLARE_HANDLER(Restart);
 GDB_DECLARE_VERBOSE_HANDLER(Attach);
 GDB_DECLARE_HANDLER(Detach);
 GDB_DECLARE_HANDLER(Kill);

sysmodules/rosalina/include/gdb/net.h

@@ -36,6 +36,8 @@ u32 GDB_DecodeHex(void *dst, const char *src, u32 len);
 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);
+const char *GDB_ParseIntegerList64(u64 *dst, const char *src, u32 nb, char sep, char lastSep, u32 base, bool allowPrefix);
+const char *GDB_ParseHexIntegerList64(u64 *dst, const char *src, u32 nb, char lastSep);
 int GDB_ReceivePacket(GDBContext *ctx);
 int GDB_SendPacket(GDBContext *ctx, const char *packetData, u32 len);
 int GDB_SendFormattedPacket(GDBContext *ctx, const char *packetDataFmt, ...);

sysmodules/rosalina/include/memory.h

@@ -32,3 +32,4 @@
 u8 *memsearch(u8 *startPos, const void *pattern, u32 size, u32 patternSize);
 void hexItoa(u64 number, char *out, u32 digits, bool uppercase);
 unsigned long int xstrtoul(const char *nptr, char **endptr, int base, bool allowPrefix, bool *ok);
+unsigned long long int xstrtoull(const char *nptr, char **endptr, int base, bool allowPrefix, bool *ok);