Move duplicated code into new files

This commit moves the duplicated code in {i386,amd64}-linux-nat.c
into the new files x86-linux-nat.[ch].  Additionally, a new
file i386-linux-nat.h was required to expose a value required
by the 32-bit code in x86-linux-nat.c.

gdb/
2014-07-11  Gary Benson  <gbenson@redhat.com>

	* i386-linux-nat.h: New file.
	* x86-linux-nat.h: Likewise.
	* x86-linux-nat.c: Likewise.
	* Makefile.in (HFILES_NO_SRCDIR): Add the above new headers.
	* config/i386/linux.mh (NATDEPFILES): Add x86-linux-nat.o.
	* config/i386/linux64.mh (NATDEPFILES): Likewise.
	* amd64-linux-nat.c (x86-linux-nat.h): New include.
	(PTRACE_GETREGSET): Now in x86-linux-nat.h.
	(PTRACE_SETREGSET): Likewise.
	(arch_lwp_info): Now in x86-linux-nat.c.
	(have_ptrace_getregset): Now in x86-linux-nat.h.
	(x86_linux_dr_get): Now in x86-linux-nat.c.
	(x86_linux_dr_set): Likewise.
	(x86_linux_dr_get_addr): Likewise.
	(x86_linux_dr_get_control): Likewise.
	(x86_linux_dr_get_status): Likewise.
	(update_debug_registers_callback): Likewise.
	(x86_linux_dr_set_control): Likewise.
	(x86_linux_dr_set_addr): Likewise.
	(x86_linux_prepare_to_resume): Likewise.
	(x86_linux_new_thread): Likewise.
	(x86_linux_new_fork): Likewise.
	(x86_linux_get_thread_area): Likewise.
	(super_post_startup_inferior): Likewise.
	(x86_linux_child_post_startup_inferior): Likewise.
	(AMD64_LINUX_USER64_CS): Likewise.
	(AMD64_LINUX_X32_DS): Likewise.
	(x86_linux_read_description): Likewise.
	(x86_linux_enable_btrace): Likewise.
	(x86_linux_disable_btrace): Likewise.
	(x86_linux_teardown_btrace): Likewise.
	(x86_linux_read_btrace): Likewise.
	(x86_linux_create_target): Likewise.
	(x86_linux_add_target): Likewise.
	* i386-linux-nat.c (x86-linux-nat.h): New include.
	(PTRACE_GETREGSET): Now in x86-linux-nat.h.
	(PTRACE_SETREGSET): Likewise.
	(arch_lwp_info): Now in x86-linux-nat.c.
	(have_ptrace_getregset): Now in x86-linux-nat.h.
	(x86_linux_dr_get): Now in x86-linux-nat.c.
	(x86_linux_dr_set): Likewise.
	(x86_linux_dr_get_addr): Likewise.
	(x86_linux_dr_get_control): Likewise.
	(x86_linux_dr_get_status): Likewise.
	(update_debug_registers_callback): Likewise.
	(x86_linux_dr_set_control): Likewise.
	(x86_linux_dr_set_addr): Likewise.
	(x86_linux_prepare_to_resume): Likewise.
	(x86_linux_new_thread): Likewise.
	(x86_linux_new_fork): Likewise.
	(x86_linux_get_thread_area): Likewise.
	(super_post_startup_inferior): Likewise.
	(x86_linux_child_post_startup_inferior): Likewise.
	(AMD64_LINUX_USER64_CS): Likewise.
	(AMD64_LINUX_X32_DS): Likewise.
	(x86_linux_read_description): Likewise.
	(x86_linux_enable_btrace): Likewise.
	(x86_linux_disable_btrace): Likewise.
	(x86_linux_teardown_btrace): Likewise.
	(x86_linux_read_btrace): Likewise.
	(x86_linux_create_target): Likewise.
	(x86_linux_add_target): Likewise.

1 files changed, 51 insertions, 0 deletions

diff --git a/gdb/x86-linux-nat.h b/gdb/x86-linux-nat.h
new file mode 100644
index 00000000000..16679afe17f
--- /dev/null
+++ b/gdb/x86-linux-nat.h
@@ -0,0 +1,51 @@
+/* Native-dependent code for GNU/Linux x86 (i386 and x86-64).
+
+   Copyright (C) 1999-2014 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 3 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, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef X86_LINUX_NAT_H
+#define X86_LINUX_NAT_H 1
+
+#ifndef PTRACE_GETREGSET
+#define PTRACE_GETREGSET	0x4204
+#endif
+
+#ifndef PTRACE_SETREGSET
+#define PTRACE_SETREGSET	0x4205
+#endif
+
+/* Does the current host support PTRACE_GETREGSET?  */
+extern int have_ptrace_getregset;
+
+
+/* Helper for ps_get_thread_area.  Sets BASE_ADDR to a pointer to
+   the thread local storage (or its descriptor) and returns PS_OK
+   on success.  Returns PS_ERR on failure.  */
+
+extern ps_err_e x86_linux_get_thread_area (pid_t pid, void *addr,
+					   unsigned int *base_addr);
+
+
+/* Create an x86 GNU/Linux target.  */
+
+extern struct target_ops *x86_linux_create_target (void);
+
+/* Add an x86 GNU/Linux target.  */
+
+extern void x86_linux_add_target (struct target_ops *t);
+
+#endif