--- ./gdb/rs6000-nat.c_orig     2012-11-26 15:20:20 +0600
+++ ./gdb/rs6000-nat.c  2012-11-26 15:23:48 +0600
@@ -66,7 +66,7 @@
 /* In 32-bit compilation mode (which is the only mode from which ptrace()
    works on 4.3), __ld_info32 is #defined as equivalent to ld_info.  */

-#ifdef __ld_info32
+#if defined (__ld_info32) || defined (__ld_info64)
 # define ARCH3264
 #endif

@@ -181,7 +181,11 @@
 static int
 rs6000_ptrace32 (int req, int id, int *addr, int data, int *buf)
 {
+  #ifdef BFD64
+  int ret = ptrace64 (req, (long long) id, (long long) addr, data, buf);
+  #else
   int ret = ptrace (req, id, (int *)addr, data, buf);
+  #endif
 #if 0
   printf ("rs6000_ptrace32 (%d, %d, 0x%x, %08x, 0x%x) = 0x%x\n",
          req, id, (unsigned int)addr, data, (unsigned int)buf, ret);
@@ -195,7 +199,11 @@
 rs6000_ptrace64 (int req, int id, long long addr, int data, void *buf)
 {
 #ifdef ARCH3264
+  #ifdef BFD64
+  int ret = ptrace64 (req, (long long) id, addr, data, (int *)buf);
+  #else
   int ret = ptracex (req, id, addr, data, buf);
+  #endif
 #else
   int ret = 0;
 #endif
--- ./gdb/gdb_ptrace.h_orig	2013-04-29 18:01:37 +0600
+++ ./gdb/gdb_ptrace.h	2013-04-29 18:01:49 +0600
@@ -136,6 +136,7 @@ extern PTRACE_TYPE_RET ptrace();
 
 #ifdef PTRACE_TYPE_ARG5
 # define ptrace(request, pid, addr, data) ptrace (request, pid, addr, data, 0)
+# define ptrace64(request, pid, addr, data) ptrace64 (request, pid, addr, data, 0)
 #endif
 
 #endif /* gdb_ptrace.h */