From ba09afc8b503771ed9adae6761c813a8e316468d Mon Sep 17 00:00:00 2001
From: Eduardo Habkost <ehabkost@redhat.com>
Date: Sun, 11 Mar 2018 13:41:19 -0400
Subject: [PATCH] pc: Generate init functions with a macro

All pc-i440fx and pc-q35 init functions simply call the corresponding
compat function and then call the main init function. Use a macro to
generate that code.

Backports commit 99fbeafee8b568e796863980365080abdb8d675e from qemu
---
 qemu/hw/i386/pc_piix.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/qemu/hw/i386/pc_piix.c b/qemu/hw/i386/pc_piix.c
index c737a839..6af28934 100644
--- a/qemu/hw/i386/pc_piix.c
+++ b/qemu/hw/i386/pc_piix.c
@@ -48,10 +48,16 @@ static void pc_compat_2_2(struct uc_struct *uc, MachineState *machine)
 {
 }
 
-static int pc_init_pci_2_2(struct uc_struct *uc, MachineState *machine)
-{
-    pc_compat_2_2(uc, machine);
-    return pc_init1(uc, machine);
-}
+// Unicorn: Modified for use with unicorn (no need for an option function)
+#define DEFINE_I440FX_MACHINE(suffix, name, compatfn) \
+    static int pc_init_##suffix(struct uc_struct *uc, MachineState *machine) \
+    { \
+        void (*compat)(struct uc_struct *uc, MachineState *m) = (compatfn); \
+        if (compat) { \
+            compat(uc, machine); \
+        } \
+        return pc_init1(uc, machine); \
+    } \
+    DEFINE_PC_MACHINE(suffix, name, pc_init_##suffix)
 
-DEFINE_PC_MACHINE(v2_2, "pc-i440fx-2.2", pc_init_pci_2_2);
+DEFINE_I440FX_MACHINE(v2_2, "pc-i440fx-2.2", pc_compat_2_2);