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diff --git a/gdb/amd64-tdep.h b/gdb/amd64-tdep.h
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+/* Target-dependent definitions for AMD64.
+
+   Copyright 2001, 2003, 2004 Free Software Foundation, Inc.
+   Contributed by Jiri Smid, SuSE Labs.
+
+   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
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   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.  */
+
+#ifndef AMD64_TDEP_H
+#define AMD64_TDEP_H
+
+struct gdbarch;
+struct frame_info;
+struct regcache;
+
+#include "i386-tdep.h"
+
+/* Register numbers of various important registers.  */
+
+enum amd64_regnum
+{
+  AMD64_RAX_REGNUM,		/* %rax */
+  AMD64_RBX_REGNUM,		/* %rbx */
+  AMD64_RCX_REGNUM,		/* %rcx */
+  AMD64_RDX_REGNUM,		/* %rdx */
+  AMD64_RSI_REGNUM,		/* %rsi */
+  AMD64_RDI_REGNUM,		/* %rdi */
+  AMD64_RBP_REGNUM,		/* %rbp */
+  AMD64_RSP_REGNUM,		/* %rsp */
+  AMD64_R8_REGNUM = 8,		/* %r8 */
+  AMD64_R15_REGNUM = 15,	/* %r15 */
+  AMD64_RIP_REGNUM,		/* %rip */
+  AMD64_EFLAGS_REGNUM,		/* %eflags */
+  AMD64_ST0_REGNUM = 24,	/* %st0 */
+  AMD64_XMM0_REGNUM = 40,	/* %xmm0 */
+  AMD64_XMM1_REGNUM		/* %xmm1 */
+};
+
+/* Number of general purpose registers.  */
+#define AMD64_NUM_GREGS		24
+
+extern void amd64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch);
+
+/* Fill register REGNUM in REGCACHE with the appropriate
+   floating-point or SSE register value from *FXSAVE.  If REGNUM is
+   -1, do this for all registers.  This function masks off any of the
+   reserved bits in *FXSAVE.  */
+
+extern void amd64_supply_fxsave (struct regcache *regcache, int regnum,
+				 const void *fxsave);
+
+/* Fill register REGNUM (if it is a floating-point or SSE register) in
+   *FXSAVE with the value in GDB's register cache.  If REGNUM is -1, do
+   this for all registers.  This function doesn't touch any of the
+   reserved bits in *FXSAVE.  */
+
+extern void amd64_fill_fxsave (char *fxsave, int regnum);
+
+
+/* Variables exported from amd64nbsd-tdep.c.  */
+extern int amd64nbsd_r_reg_offset[];
+
+/* Variables exported from amd64obsd-tdep.c.  */
+extern int amd64obsd_r_reg_offset[];
+
+/* Variables exported from amd64fbsd-tdep.c.  */
+extern CORE_ADDR amd64fbsd_sigtramp_start_addr;
+extern CORE_ADDR amd64fbsd_sigtramp_end_addr;
+extern int amd64fbsd_sc_reg_offset[];
+
+#endif /* amd64-tdep.h */