* NEWS: Mention pointer to member improvements.

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

diff --git a/gdb/amd64-nat.c b/gdb/amd64-nat.c
index 4346d74640c84a11f330a6d8d0c7009d2e5929cb..36e40dc04f396d73610a9a0c98500fdb753d5345 100644 (file)
--- a/gdb/amd64-nat.c
+++ b/gdb/amd64-nat.c
@@ -1,6 +1,6 @@
 /* Native-dependent code for AMD64.
 
-   Copyright 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -16,17 +16,18 @@
 
    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.  */
+   Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
 
 #include "defs.h"
 #include "gdbarch.h"
 #include "regcache.h"
 
 #include "gdb_assert.h"
+#include "gdb_string.h"
 
 #include "i386-tdep.h"
-#include "x86-64-tdep.h"
+#include "amd64-tdep.h"
 
 /* The following bits of code help with implementing debugging 32-bit
    code natively on AMD64.  The idea is to define two mappings between
@@ -46,7 +47,7 @@ int amd64_native_gregset32_num_regs = I386_NUM_GREGS;
 
 /* General-purpose register mapping for native 64-bit code.  */
 int *amd64_native_gregset64_reg_offset;
-int amd64_native_gregset64_num_regs = X86_64_NUM_GREGS;
+int amd64_native_gregset64_num_regs = AMD64_NUM_GREGS;
 
 /* Return the offset of REGNUM within the appropriate native
    general-purpose register set.  */
@@ -84,7 +85,7 @@ 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
@@ -128,7 +129,23 @@ 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;