winedbg: Move gdb command line handling.

- moves gdb command line handling to gdbproxy.c
- using manifest constants to make code more readable

programs/winedbg/debugger.h

@@ -373,7 +373,7 @@ extern void             dbg_wait_next_exception(DWORD cont, int count, int mode)
 extern enum dbg_start   dbg_active_attach(int argc, char* argv[]);
 extern enum dbg_start   dbg_active_launch(int argc, char* argv[]);
   /* temporary for tgt_active.c */
-extern enum dbg_action_mode {none_mode = 0, winedbg_mode, automatic_mode, gdb_mode} dbg_action_mode;
+extern enum dbg_action_mode {none_mode = 0, winedbg_mode, automatic_mode} dbg_action_mode;
 extern unsigned         dbg_main_loop(HANDLE);
 
   /* tgt_minidump.c */
@@ -414,7 +414,7 @@ extern void             dbg_del_thread(struct dbg_thread* t);
 extern BOOL             dbg_get_debuggee_info(HANDLE hProcess, IMAGEHLP_MODULE* imh_mod);
 
   /* gdbproxy.c */
-extern BOOL             gdb_remote(unsigned int);
+extern int              gdb_main(int argc, char* argv[]);
 
 static inline BOOL dbg_read_memory(const void* addr, void* buffer, size_t len)
 {

programs/winedbg/gdbproxy.c

@@ -2042,6 +2042,9 @@ static int fetch_data(struct gdb_context* gdbctx)
     return gdbctx->in_len - in_len;
 }
 
+#define FLAG_NO_START   1
+#define FLAG_WITH_XTERM 2
+
 static BOOL gdb_exec(const char* wine_path, unsigned port, unsigned flags)
 {
     char            buf[MAX_PATH];
@@ -2071,7 +2074,7 @@ static BOOL gdb_exec(const char* wine_path, unsigned port, unsigned flags)
     /* tell gdb to delete this file when done handling it... */
     fprintf(f, "shell rm -f \"%s\"\n", buf);
     fclose(f);
-    if (flags & 2)
+    if (flags & FLAG_WITH_XTERM)
         execlp("xterm", "xterm", "-e", gdb_path, "-x", buf, NULL);
     else
         execlp(gdb_path, gdb_path, "-x", buf, NULL);
@@ -2106,7 +2109,7 @@ static BOOL gdb_startup(struct gdb_context* gdbctx, DEBUG_EVENT* de, unsigned fl
     if (!dbg_get_debuggee_info(gdbctx->process->handle, &imh_mod)) return FALSE;
 
     /* step 4: fire up gdb (if requested) */
-    if (flags & 1)
+    if (flags & FLAG_NO_START)
         fprintf(stderr, "target remote localhost:%d\n", ntohs(s_addrs.sin_port));
     else
         switch (fork())
@@ -2205,7 +2208,7 @@ static BOOL gdb_init_context(struct gdb_context* gdbctx, unsigned flags)
     return TRUE;
 }
 
-BOOL gdb_remote(unsigned flags)
+static int gdb_remote(unsigned flags)
 {
     struct pollfd       pollfd;
     struct gdb_context  gdbctx;
@@ -2248,3 +2251,29 @@ BOOL gdb_remote(unsigned flags)
     wait(NULL);
     return 0;
 }
+
+int gdb_main(int argc, char* argv[])
+{
+    unsigned gdb_flags = 0;
+
+    argc--; argv++;
+    while (argc > 0 && argv[0][0] == '-')
+    {
+        if (strcmp(argv[0], "--no-start") == 0)
+        {
+            gdb_flags |= FLAG_NO_START;
+            argc--; argv++;
+            continue;
+        }
+        if (strcmp(argv[0], "--with-xterm") == 0)
+        {
+            gdb_flags |= FLAG_WITH_XTERM;
+            argc--; argv++;
+            continue;
+        }
+        return -1;
+    }
+    if (dbg_active_attach(argc, argv) || dbg_active_launch(argc, argv))
+        return gdb_remote(gdb_flags);
+    return -1;
+}

programs/winedbg/winedbg.c

@@ -446,7 +446,7 @@ static void dbg_init_console(void)
 static int dbg_winedbg_usage(void)
 {
     dbg_printf("Usage: winedbg [--command cmd|--file file|--auto] [--gdb [--no-start] [--with-xterm]] cmdline\n");
-    return 1;
+    return -1;
 }
 
 struct backend_cpu* be_cpu;
@@ -462,8 +462,7 @@ extern struct backend_cpu be_alpha;
 
 int main(int argc, char** argv)
 {
-    DWORD	retv = 0;
-    unsigned    gdb_flags = 0;
+    int 	retv = 0;
     HANDLE      hFile = INVALID_HANDLE_VALUE;
 
 #ifdef __i386__
@@ -484,6 +483,13 @@ int main(int argc, char** argv)
     /* as we don't care about exec name */
     argc--; argv++;
 
+    if (argc && !strcmp(argv[0], "--gdb"))
+    {
+        retv = gdb_main(argc, argv);
+        if (retv == -1) dbg_winedbg_usage();
+        return retv;
+    }
+
     /* parse options */
     while (argc > 0 && argv[0][0] == '-')
     {
@@ -532,25 +538,6 @@ int main(int argc, char** argv)
             dbg_houtput = GetStdHandle(STD_ERROR_HANDLE);
             continue;
         }
-        if (!strcmp(argv[0], "--gdb"))
-        {
-            if (dbg_action_mode != none_mode) return dbg_winedbg_usage();
-            dbg_action_mode = gdb_mode;
-            argc--; argv++;
-            continue;
-        }
-        if (strcmp(argv[0], "--no-start") == 0 && dbg_action_mode == gdb_mode)
-        {
-            gdb_flags |= 1;
-            argc--; argv++;
-            continue;
-        }
-        if (strcmp(argv[0], "--with-xterm") == 0 && dbg_action_mode == gdb_mode)
-        {
-            gdb_flags |= 2;
-            argc--; argv++;
-            continue;
-        }
         return dbg_winedbg_usage();
     }
 
@@ -558,10 +545,6 @@ int main(int argc, char** argv)
     if (!argc || dbg_active_attach(argc, argv) == start_ok ||
         dbg_active_launch(argc, argv) == start_ok)
     {
-        /* don't save local vars in gdb mode */
-        if (dbg_action_mode == gdb_mode && dbg_curr_pid)
-            return gdb_remote(gdb_flags);
-
         dbg_init_console();
 
         SymSetOptions((SymGetOptions() & ~(SYMOPT_UNDNAME)) |