Initial work to add debug menu from 3dsspec

1 files changed, 162 insertions, 0 deletions

diff --git a/source/debug.c b/source/debug.c
new file mode 100644
index 0000000..c9c36a1
--- /dev/null
+++ b/source/debug.c
@@ -0,0 +1,162 @@
+/*
+
+    3ds81 - Nintendo 3DS ZX81 emulator
+
+    Copyright (C) 2021  Ian Cowburn <ianc@noddybox.co.uk>
+
+    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/>
+
+    -------------------------------------------------------------------------
+
+    Provides an interface for debug
+
+*/
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <3ds.h>
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <netdb.h>
+
+#include "debug.h"
+#include "gui.h"
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+/* ---------------------------------------- GLOBAL EXTERNALS
+*/
+int                     debug_enabled = FALSE;
+
+/* ---------------------------------------- PRIVATE DAYA
+*/
+static char     debug_host[256];
+static char     debug_port[32];
+static int      sock = -1;
+
+/* ---------------------------------------- PRIVATE FUNCTIONS
+*/
+static void Error(const char *format, ...)
+{
+    static char buff[4096];
+    va_list va;
+
+    va_start(va, format);
+    vsnprintf(buff, 4096, format, va);
+    buff[4095] = 0;
+    va_end(va);
+
+    GUI_Alert(FALSE, buff);
+}
+
+static void OpenDebugConnection(void)
+{
+    if (sock == -1)
+    {
+        struct addrinfo *addr, *addr_p;
+        struct addrinfo hints = {0};
+
+        hints.ai_family = PF_UNSPEC;
+        hints.ai_socktype = SOCK_STREAM;
+
+        if (getaddrinfo(debug_host, debug_port, &hints, &addr) == 0)
+        {
+            for(addr_p = addr; addr_p && sock == -1; addr_p = addr_p->ai_next)
+            {
+                sock = socket(addr_p->ai_family,
+                              addr_p->ai_socktype,
+                              addr_p->ai_protocol);
+
+                if (sock != -1)
+                {
+                    if (connect(sock, addr_p->ai_addr, addr_p->ai_addrlen)
+                                                                        == -1)
+                    {
+                        Error("Failed to connect socket");
+                        close(sock);
+                        sock = -1;
+                    }
+                }
+                else
+                {
+                    Error("Failed to create socket(%d,%d,%d)\n%d %s",
+                                                        addr_p->ai_family,
+                                                        addr_p->ai_socktype,
+                                                        addr_p->ai_protocol,
+                                                        errno,
+                                                        strerror(errno));
+                }
+            }
+        }
+        else
+        {
+            Error("Failed to getaddrinfo(%s,%s)", debug_host, debug_port);
+        }
+    }
+}
+
+/* ---------------------------------------- EXPORTED INTERFACES
+*/
+void DEBUG_SetAddress(const char *host, const char *port)
+{
+    strncpy(debug_host, host, (sizeof debug_host) - 1);
+    strncpy(debug_port, port, (sizeof debug_port) - 1);
+
+    debug_host[(sizeof debug_host) - 1] = 0;
+    debug_port[(sizeof debug_port) - 1] = 0;
+
+    if (sock != -1)
+    {
+        close(sock);
+        sock = -1;
+    }
+}
+
+
+void DEBUG_Output(const char *format, ...)
+{
+    static char buff[4096];
+
+    if (debug_enabled)
+    {
+        va_list va;
+
+        OpenDebugConnection();
+
+        va_start(va, format);
+        vsnprintf(buff, 4096, format, va);
+        buff[4095] = 0;
+        va_end(va);
+
+        if (sock != -1)
+        {
+            send(sock, buff, strlen(buff), 0);
+        }
+    }
+}
+
+
+/* END OF FILE */