hw/i386/pc: move shared x86 functions to x86.c and export them

Move x86 functions that will be shared between PC and non-PC machine
types to x86.c, along with their helpers.

Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>

include/hw/i386/x86.h

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2019 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2 or later, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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 HW_I386_X86_H
+#define HW_I386_X86_H
+
+#include "hw/boards.h"
+
+uint32_t x86_cpu_apic_id_from_index(PCMachineState *pcms,
+                                    unsigned int cpu_index);
+void x86_cpu_new(PCMachineState *pcms, int64_t apic_id, Error **errp);
+void x86_cpus_init(PCMachineState *pcms);
+CpuInstanceProperties x86_cpu_index_to_props(MachineState *ms,
+                                             unsigned cpu_index);
+int64_t x86_get_default_cpu_node_id(const MachineState *ms, int idx);
+const CPUArchIdList *x86_possible_cpu_arch_ids(MachineState *ms);
+
+void x86_bios_rom_init(MemoryRegion *rom_memory, bool isapc_ram_fw);
+
+void x86_load_linux(PCMachineState *x86ms, FWCfgState *fw_cfg);
+
+#endif