From aff22f452f0c5688b6512c35d7e24d702e7e1631 Mon Sep 17 00:00:00 2001
From: Jim Kingdon <jkingdon@engr.sgi.com>
Date: Wed, 31 Mar 1993 21:45:59 +0000
Subject: [PATCH] New file dis-buf.c; part of read_memory_func changes just
 checked it

---
 opcodes/dis-buf.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 opcodes/dis-buf.c

diff --git a/opcodes/dis-buf.c b/opcodes/dis-buf.c
new file mode 100644
index 0000000000..279aa243ba
--- /dev/null
+++ b/opcodes/dis-buf.c
@@ -0,0 +1,54 @@
+/* Disassemble from a buffer, for GNU.
+   Copyright (C) 1993 Free Software Foundation, Inc.
+
+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.  */
+
+#include "dis-asm.h"
+#include <errno.h>
+
+/* Get LENGTH bytes from info's buffer, at target address memaddr.
+   Transfer them to myaddr.  */
+int
+buffer_read_memory (memaddr, myaddr, length, info)
+     bfd_vma memaddr;
+     bfd_byte *myaddr;
+     int length;
+     struct disassemble_info *info;
+{
+  if (memaddr < info->buffer_vma
+      || memaddr + length > info->buffer_vma + info->buffer_length)
+    /* Out of bounds.  Use EIO because GDB uses it.  */
+    return EIO;
+  memcpy (myaddr, info->buffer + (memaddr - info->buffer_vma), length);
+  return 0;
+}
+
+/* Print an error message.  We can assume that this is in response to
+   an error return from buffer_read_memory.  */
+void
+perror_memory (status, memaddr, info)
+     int status;
+     bfd_vma memaddr;
+     struct disassemble_info *info;
+{
+  if (status != EIO)
+    /* Can't happen.  */
+    (*info->fprintf_func) (info->stream, "Unknown error %d\n", status);
+  else
+    /* Actually, address between memaddr and memaddr + len was
+       out of bounds.  */
+    (*info->fprintf_func) (info->stream,
+			   "Address 0x%x is out of bounds.\n", memaddr);
+}