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-rw-r--r--gdb/ChangeLog4
-rw-r--r--gdb/amd64-nat.c13
2 files changed, 16 insertions, 1 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index e741021..18b8a53 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,9 @@
2004-02-28 Mark Kettenis <kettenis@gnu.org>
+ * amd64-nat.c: Include "gdb_string.h".
+ (amd64_collect_native_gregset): Zero-extend the 32-bit
+ general-purpose registers and %eip.
+
* amd64-tdep.h: (amd64_collect_fxsave): New prototype.
* amd64-tdep.c (amd64_collect_fxsave): New function.
(amd64_fill_fxsave): Simply call amd64_collect_fxsave.
diff --git a/gdb/amd64-nat.c b/gdb/amd64-nat.c
index 81a87b6..1efe47a 100644
--- a/gdb/amd64-nat.c
+++ b/gdb/amd64-nat.c
@@ -24,6 +24,7 @@
#include "regcache.h"
#include "gdb_assert.h"
+#include "gdb_string.h"
#include "i386-tdep.h"
#include "amd64-tdep.h"
@@ -128,7 +129,17 @@ 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);
+ }
+ }
if (num_regs > NUM_REGS)
num_regs = NUM_REGS;