[PATCH v3 24/29] target/ppc: move power-saving interrupt masking out of cpu_has_work_POWER7

[Matheus Ferst]

Move the interrupt masking logic out of cpu_has_work_POWER7 in a new
method, p7_interrupt_powersave, that only returns an interrupt if it can
wake the processor from power-saving mode.

Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
---
 target/ppc/cpu_init.c | 45 ++++++++++++++++++++++++-------------------
 1 file changed, 25 insertions(+), 20 deletions(-)

diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c
index 4a44ba1733..53a87c379c 100644
--- a/target/ppc/cpu_init.c
+++ b/target/ppc/cpu_init.c
@@ -5960,6 +5960,30 @@ static bool ppc_pvr_match_power7(PowerPCCPUClass *pcc, 
uint32_t pvr, bool best)
     return true;
 }
 
+static int p7_interrupt_powersave(CPUPPCState *env)
+{
+    if ((env->pending_interrupts & PPC_INTERRUPT_EXT) &&
+        (env->spr[SPR_LPCR] & LPCR_P7_PECE0)) {
+        return PPC_INTERRUPT_EXT;
+    }
+    if ((env->pending_interrupts & PPC_INTERRUPT_DECR) &&
+        (env->spr[SPR_LPCR] & LPCR_P7_PECE1)) {
+        return PPC_INTERRUPT_DECR;
+    }
+    if ((env->pending_interrupts & PPC_INTERRUPT_MCK) &&
+        (env->spr[SPR_LPCR] & LPCR_P7_PECE2)) {
+        return PPC_INTERRUPT_MCK;
+    }
+    if ((env->pending_interrupts & PPC_INTERRUPT_HMI) &&
+        (env->spr[SPR_LPCR] & LPCR_P7_PECE2)) {
+        return PPC_INTERRUPT_HMI;
+    }
+    if (env->pending_interrupts & PPC_INTERRUPT_RESET) {
+        return PPC_INTERRUPT_RESET;
+    }
+    return 0;
+}
+
 static bool cpu_has_work_POWER7(CPUState *cs)
 {
     PowerPCCPU *cpu = POWERPC_CPU(cs);
@@ -5969,26 +5993,7 @@ static bool cpu_has_work_POWER7(CPUState *cs)
         if (!(cs->interrupt_request & CPU_INTERRUPT_HARD)) {
             return false;
         }
-        if ((env->pending_interrupts & PPC_INTERRUPT_EXT) &&
-            (env->spr[SPR_LPCR] & LPCR_P7_PECE0)) {
-            return true;
-        }
-        if ((env->pending_interrupts & PPC_INTERRUPT_DECR) &&
-            (env->spr[SPR_LPCR] & LPCR_P7_PECE1)) {
-            return true;
-        }
-        if ((env->pending_interrupts & PPC_INTERRUPT_MCK) &&
-            (env->spr[SPR_LPCR] & LPCR_P7_PECE2)) {
-            return true;
-        }
-        if ((env->pending_interrupts & PPC_INTERRUPT_HMI) &&
-            (env->spr[SPR_LPCR] & LPCR_P7_PECE2)) {
-            return true;
-        }
-        if (env->pending_interrupts & PPC_INTERRUPT_RESET) {
-            return true;
-        }
-        return false;
+        return p7_interrupt_powersave(env) != 0;
     } else {
         return FIELD_EX64(env->msr, MSR, EE) &&
                (cs->interrupt_request & CPU_INTERRUPT_HARD);
-- 
2.25.1