spapr_hcall: Split h_set_mode()

This moves H_SET_MODE_RESOURCE_LE handler to a separate function
as there are other "resources" coming and this is going to become ugly.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

hw/ppc/spapr_hcall.c

@@ -712,46 +712,49 @@ static target_ulong h_logical_dcbf(PowerPCCPU *cpu, sPAPREnvironment *spapr,
     return H_SUCCESS;
 }
 
-static target_ulong h_set_mode(PowerPCCPU *cpu, sPAPREnvironment *spapr,
-                               target_ulong opcode, target_ulong *args)
+static target_ulong h_set_mode_resouce_le(PowerPCCPU *cpu,
+                                          target_ulong mflags,
+                                          target_ulong value1,
+                                          target_ulong value2)
 {
     CPUState *cs;
-    target_ulong mflags = args[0];
-    target_ulong resource = args[1];
-    target_ulong value1 = args[2];
-    target_ulong value2 = args[3];
-    target_ulong ret = H_P2;
 
-    if (resource == H_SET_MODE_RESOURCE_LE) {
-        if (value1) {
-            ret = H_P3;
-            goto out;
+    if (value1) {
+        return H_P3;
+    }
+    if (value2) {
+        return H_P4;
+    }
+
+    switch (mflags) {
+    case H_SET_MODE_ENDIAN_BIG:
+        CPU_FOREACH(cs) {
+            set_spr(cs, SPR_LPCR, 0, LPCR_ILE);
         }
-        if (value2) {
-            ret = H_P4;
-            goto out;
+        return H_SUCCESS;
+
+    case H_SET_MODE_ENDIAN_LITTLE:
+        CPU_FOREACH(cs) {
+            set_spr(cs, SPR_LPCR, LPCR_ILE, LPCR_ILE);
         }
-        switch (mflags) {
-        case H_SET_MODE_ENDIAN_BIG:
-            CPU_FOREACH(cs) {
-                set_spr(cs, SPR_LPCR, 0, LPCR_ILE);
-            }
-            ret = H_SUCCESS;
-            break;
+        return H_SUCCESS;
+    }
 
-        case H_SET_MODE_ENDIAN_LITTLE:
-            CPU_FOREACH(cs) {
-                set_spr(cs, SPR_LPCR, LPCR_ILE, LPCR_ILE);
-            }
-            ret = H_SUCCESS;
-            break;
+    return H_UNSUPPORTED_FLAG;
+}
 
-        default:
-            ret = H_UNSUPPORTED_FLAG;
-        }
+static target_ulong h_set_mode(PowerPCCPU *cpu, sPAPREnvironment *spapr,
+                               target_ulong opcode, target_ulong *args)
+{
+    target_ulong resource = args[1];
+    target_ulong ret = H_P2;
+
+    switch (resource) {
+    case H_SET_MODE_RESOURCE_LE:
+        ret = h_set_mode_resouce_le(cpu, args[0], args[2], args[3]);
+        break;
     }
 
-out:
     return ret;
 }