Wed May 24 14:37:31 1995 Steve Chamberlain <sac@slash.cygnus.com>

	* New.

1 files changed, 107 insertions, 0 deletions

diff --git a/sim/arm/gdbhost.c b/sim/arm/gdbhost.c
new file mode 100644
index 0000000..9e6e2ef
--- /dev/null
+++ b/sim/arm/gdbhost.c
@@ -0,0 +1,107 @@
+/*  gdbhost.c -- ARMulator RDP to gdb comms code:  ARM6 Instruction Emulator.
+    Copyright (C) 1994 Advanced RISC Machines Ltd.
+ 
+    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 2 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, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/***********************************************************/
+/* Functions that communicate info back to the debugger... */
+/***********************************************************/
+
+#include <stdio.h>
+#include <stdarg.h>
+#include "armdefs.h"
+#include "communicate.h"
+#include "dbg_rdi.h"
+#include "armos.h"
+
+#define OS_SendNothing 0x0
+#define OS_SendChar 0x1
+#define OS_SendWord 0x2
+#define OS_SendString 0x3
+
+/* Defined in kid.c */
+extern int wait_for_osreply(ARMword *reply);
+
+/* A pipe for handling SWI return values that goes straight from the */
+/* parent to the ARMulator host interface, bypassing the childs RDP */
+/* to RDI interpreter */
+int DebuggerARMul[2];
+
+/* The pipes between the two processes */
+int mumkid[2];
+int kidmum[2];
+
+void myprint (void *arg, const char *format, va_list ap)
+{
+#ifdef DEBUG
+  fprintf (stderr, "Host: myprint\n");
+#endif
+  vfprintf (stderr, format, ap);
+}
+
+
+/* Waits for a keypress on the debuggers' keyboard */
+void mypause (void *arg)
+{
+#ifdef DEBUG
+  fprintf (stderr, "Host: mypause\n");
+#endif
+}  /* I do love exciting functions */
+
+void mywritec(void *arg, int c)
+{
+#ifdef DEBUG
+  fprintf(stderr, "Mywrite : %c\n", c);
+#endif
+  MYwrite_char(kidmum[1], RDP_OSOp);     /* OS Operation Request Message */
+  MYwrite_word(kidmum[1], SWI_WriteC);   /* Print... */
+  MYwrite_char(kidmum[1], OS_SendChar);  /*  ...a single character */ 
+  MYwrite_char(kidmum[1], (unsigned char) c);
+  
+  wait_for_osreply((ARMword *) 0);
+}
+
+int myreadc(void *arg)
+{
+  char c;
+  ARMword x;
+  
+#ifdef DEBUG
+  fprintf(stderr, "Host: myreadc\n");
+#endif
+  MYwrite_char(kidmum[1], RDP_OSOp);  /* OS Operation Request Message */
+  MYwrite_word(kidmum[1], SWI_ReadC); /* Read... */
+  MYwrite_char(kidmum[1], OS_SendNothing);
+  
+  c = wait_for_osreply(&x);
+  return (x);
+}
+
+
+int mywrite(void *arg, char const *buffer, int len)
+{
+#ifdef DEBUG
+  fprintf(stderr, "Host: mywrite\n");
+#endif
+  return 0;
+}
+
+char *mygets(void *arg, char *buffer, int len)
+{
+#ifdef DEBUG
+  fprintf(stderr, "Host: mygets\n");
+#endif
+  return buffer;
+}