X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Famd64-nat.c;h=b0460529545c8785b5e56c491176f9bcc1fd98e1;hb=6e8c24fe27098f407000812e61fa8210095a7970;hp=68654568a48cdc8ac44841da009cd844e39b4c2a;hpb=0b30217134add051e159a192066a1e568ebd837f;p=deliverable%2Fbinutils-gdb.git

diff --git a/gdb/amd64-nat.c b/gdb/amd64-nat.c
index 68654568a4..b046052954 100644
--- a/gdb/amd64-nat.c
+++ b/gdb/amd64-nat.c
@@ -1,6 +1,6 @@
 /* Native-dependent code for AMD64.
 
-   Copyright (C) 2003-2004, 2007-2012 Free Software Foundation, Inc.
+   Copyright (C) 2003-2017 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -21,9 +21,6 @@
 #include "gdbarch.h"
 #include "regcache.h"
 
-#include "gdb_assert.h"
-#include "gdb_string.h"
-
 #include "i386-tdep.h"
 #include "amd64-tdep.h"
 #include "amd64-nat.h"
@@ -59,7 +56,7 @@ amd64_native_gregset_reg_offset (struct gdbarch *gdbarch, int regnum)
 
   gdb_assert (regnum >= 0);
 
-  if (gdbarch_ptr_bit (gdbarch) == 32)
+  if (gdbarch_bfd_arch_info (gdbarch)->bits_per_word == 32)
     {
       reg_offset = amd64_native_gregset32_reg_offset;
       num_regs = amd64_native_gregset32_num_regs;
@@ -68,10 +65,17 @@ amd64_native_gregset_reg_offset (struct gdbarch *gdbarch, int regnum)
   if (num_regs > gdbarch_num_regs (gdbarch))
     num_regs = gdbarch_num_regs (gdbarch);
 
-  if (regnum < num_regs && regnum < gdbarch_num_regs (gdbarch))
-    return reg_offset[regnum];
+  if (regnum >= num_regs)
+    return -1;
+
+  /* Kernels that predate Linux 2.6.25 don't provide access to
+     these segment registers in user_regs_struct.   */
+#ifndef HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE
+  if (regnum == AMD64_FSBASE_REGNUM || regnum == AMD64_GSBASE_REGNUM)
+    return -1;
+#endif
 
-  return -1;
+  return reg_offset[regnum];
 }
 
 /* Return whether the native general-purpose register set supplies
@@ -91,12 +95,12 @@ void
 amd64_supply_native_gregset (struct regcache *regcache,
 			     const void *gregs, int regnum)
 {
-  const char *regs = gregs;
-  struct gdbarch *gdbarch = get_regcache_arch (regcache);
+  const char *regs = (const char *) gregs;
+  struct gdbarch *gdbarch = regcache->arch ();
   int num_regs = amd64_native_gregset64_num_regs;
   int i;
 
-  if (gdbarch_ptr_bit (gdbarch) == 32)
+  if (gdbarch_bfd_arch_info (gdbarch)->bits_per_word == 32)
     num_regs = amd64_native_gregset32_num_regs;
 
   if (num_regs > gdbarch_num_regs (gdbarch))
@@ -122,12 +126,12 @@ void
 amd64_collect_native_gregset (const struct regcache *regcache,
 			      void *gregs, int regnum)
 {
-  char *regs = gregs;
-  struct gdbarch *gdbarch = get_regcache_arch (regcache);
+  char *regs = (char *) gregs;
+  struct gdbarch *gdbarch = regcache->arch ();
   int num_regs = amd64_native_gregset64_num_regs;
   int i;
 
-  if (gdbarch_ptr_bit (gdbarch) == 32)
+  if (gdbarch_bfd_arch_info (gdbarch)->bits_per_word == 32)
     {
       num_regs = amd64_native_gregset32_num_regs;