* ChangeLog-2007: New ChangeLog rotation.

[deliverable/binutils-gdb.git] / gdb / amd64-nat.c

diff --git a/gdb/amd64-nat.c b/gdb/amd64-nat.c
index 81a87b69e4497b871f6dad868d2e809660f30ad9..9c6965a73b65e7b0c51d289f556fe028539fe10f 100644 (file)
--- a/gdb/amd64-nat.c
+++ b/gdb/amd64-nat.c
@@ -1,12 +1,12 @@
 /* Native-dependent code for AMD64.
 
-   Copyright 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
    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
+   the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -15,15 +15,14 @@
    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., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "defs.h"
 #include "gdbarch.h"
 #include "regcache.h"
 
 #include "gdb_assert.h"
+#include "gdb_string.h"
 
 #include "i386-tdep.h"
 #include "amd64-tdep.h"
@@ -65,10 +64,10 @@ amd64_native_gregset_reg_offset (int regnum)
       num_regs = amd64_native_gregset32_num_regs;
     }
 
-  if (num_regs > NUM_REGS)
-    num_regs = NUM_REGS;
+  if (num_regs > gdbarch_num_regs (current_gdbarch))
+    num_regs = gdbarch_num_regs (current_gdbarch);
 
-  if (regnum < num_regs && regnum < NUM_REGS)
+  if (regnum < num_regs && regnum < gdbarch_num_regs (current_gdbarch))
     return reg_offset[regnum];
 
   return -1;
@@ -84,7 +83,7 @@ amd64_native_gregset_supplies_p (int regnum)
 }
 
 
-/* Supply register REGNUM, whose contents are store in BUF, to
+/* Supply register REGNUM, whose contents are stored in GREGS, to
    REGCACHE.  If REGNUM is -1, supply all appropriate registers.  */
 
 void
@@ -99,8 +98,8 @@ amd64_supply_native_gregset (struct regcache *regcache,
   if (gdbarch_ptr_bit (gdbarch) == 32)
     num_regs = amd64_native_gregset32_num_regs;
 
-  if (num_regs > NUM_REGS)
-    num_regs = NUM_REGS;
+  if (num_regs > gdbarch_num_regs (gdbarch))
+    num_regs = gdbarch_num_regs (gdbarch);
 
   for (i = 0; i < num_regs; i++)
     {
@@ -128,10 +127,26 @@ amd64_collect_native_gregset (const struct regcache *regcache,
   int i;
 
   if (gdbarch_ptr_bit (gdbarch) == 32)
-    num_regs = amd64_native_gregset32_num_regs;
+    {
+      num_regs = amd64_native_gregset32_num_regs;
+
+      /* Make sure %eax, %ebx, %ecx, %edx, %esi, %edi, %ebp, %esp and
+         %eip get zero-extended to 64 bits.  */
+      for (i = 0; i <= I386_EIP_REGNUM; i++)
+       {
+         if (regnum == -1 || regnum == i)
+           memset (regs + amd64_native_gregset_reg_offset (i), 0, 8);
+       }
+      /* Ditto for %cs, %ss, %ds, %es, %fs, and %gs.  */
+      for (i = I386_CS_REGNUM; i <= I386_GS_REGNUM; i++)
+       {
+         if (regnum == -1 || regnum == i)
+           memset (regs + amd64_native_gregset_reg_offset (i), 0, 8);
+       }
+    }
 
-  if (num_regs > NUM_REGS)
-    num_regs = NUM_REGS;
+  if (num_regs > gdbarch_num_regs (gdbarch))
+    num_regs = gdbarch_num_regs (gdbarch);
 
   for (i = 0; i < num_regs; i++)
     {