[PATCH 2/6] target/ppc: Factor out 4xx ppcemb_tlb_t flushing

[Nicholas Piggin <npiggin@gmail.com>]

Flushing the TCG TLB pages that cache a software TLB is a common
operation, factor it into its own function.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 target/ppc/mmu_helper.c | 24 +++++++++++++-----------
 1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c
index c140f3c96d..949ae87f4f 100644
--- a/target/ppc/mmu_helper.c
+++ b/target/ppc/mmu_helper.c
@@ -749,12 +749,20 @@ target_ulong helper_4xx_tlbre_lo(CPUPPCState *env, target_ulong entry)
     return ret;
 }
 
+static void ppcemb_tlb_flush(CPUState *cs, ppcemb_tlb_t *tlb)
+{
+    target_ulong ea;
+
+    for (ea = tlb->EPN; ea < tlb->EPN + tlb->size; ea += TARGET_PAGE_SIZE) {
+        tlb_flush_page(cs, ea);
+    }
+}
+
 void helper_4xx_tlbwe_hi(CPUPPCState *env, target_ulong entry,
                          target_ulong val)
 {
     CPUState *cs = env_cpu(env);
     ppcemb_tlb_t *tlb;
-    target_ulong page, end;
 
     qemu_log_mask(CPU_LOG_MMU, "%s entry %d val " TARGET_FMT_lx "\n",
                   __func__, (int)entry,
@@ -763,13 +771,10 @@ void helper_4xx_tlbwe_hi(CPUPPCState *env, target_ulong entry,
     tlb = &env->tlb.tlbe[entry];
     /* Invalidate previous TLB (if it's valid) */
     if (tlb->prot & PAGE_VALID) {
-        end = tlb->EPN + tlb->size;
         qemu_log_mask(CPU_LOG_MMU, "%s: invalidate old TLB %d start "
                       TARGET_FMT_lx " end " TARGET_FMT_lx "\n", __func__,
-                      (int)entry, tlb->EPN, end);
-        for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE) {
-            tlb_flush_page(cs, page);
-        }
+                      (int)entry, tlb->EPN, tlb->EPN + tlb->size);
+        ppcemb_tlb_flush(cs, tlb);
     }
     tlb->size = booke_tlb_to_page_size((val >> PPC4XX_TLBHI_SIZE_SHIFT)
                                        & PPC4XX_TLBHI_SIZE_MASK);
@@ -805,13 +810,10 @@ void helper_4xx_tlbwe_hi(CPUPPCState *env, target_ulong entry,
                   tlb->prot & PAGE_VALID ? 'v' : '-', (int)tlb->PID);
     /* Invalidate new TLB (if valid) */
     if (tlb->prot & PAGE_VALID) {
-        end = tlb->EPN + tlb->size;
         qemu_log_mask(CPU_LOG_MMU, "%s: invalidate TLB %d start "
                       TARGET_FMT_lx " end " TARGET_FMT_lx "\n", __func__,
-                      (int)entry, tlb->EPN, end);
-        for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE) {
-            tlb_flush_page(cs, page);
-        }
+                      (int)entry, tlb->EPN, tlb->EPN + tlb->size);
+        ppcemb_tlb_flush(cs, tlb);
     }
 }
 
-- 
2.42.0