[PATCH v2 2/4] target/ppc: Move common check in machine check handlers to a function

[Nicholas Piggin <npiggin@gmail.com>]

From: BALATON Zoltan <balaton@eik.bme.hu>

All powerpc exception handlers share some code when handling machine
check exceptions. Move this to a common function.

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
[np: adapted to make checkstop generally usable]
Signed-off-by-by: Nicholas Piggin <npiggin@gmail.com>
---
Since v1:
- Adjusted to avoid additional trivial wrapper function when
  making checkstop usable by other callers.

 target/ppc/excp_helper.c | 98 +++++++++-------------------------------
 1 file changed, 21 insertions(+), 77 deletions(-)

diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index 13318fbbb9..5beda973ce 100644
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -186,6 +186,21 @@ static void ppc_excp_debug_sw_tlb(CPUPPCState *env, int excp)
              env->error_code);
 }
 
+static void powerpc_checkstop(CPUPPCState *env)
+{
+    CPUState *cs = env_cpu(env);
+
+    /* Machine check exception is not enabled. Enter checkstop state. */
+    fprintf(stderr, "Machine check while not allowed. "
+            "Entering checkstop state\n");
+    if (qemu_log_separate()) {
+        qemu_log("Machine check while not allowed. "
+                 "Entering checkstop state\n");
+    }
+    cs->halted = 1;
+    cpu_interrupt_exittb(cs);
+}
+
 #if defined(TARGET_PPC64)
 static int powerpc_reset_wakeup(CPUState *cs, CPUPPCState *env, int excp,
                                 target_ulong *msr)
@@ -468,20 +483,8 @@ static void powerpc_excp_40x(PowerPCCPU *cpu, int excp)
         break;
     case POWERPC_EXCP_MCHECK:    /* Machine check exception                  */
         if (!FIELD_EX64(env->msr, MSR, ME)) {
-            /*
-             * Machine check exception is not enabled.  Enter
-             * checkstop state.
-             */
-            fprintf(stderr, "Machine check while not allowed. "
-                    "Entering checkstop state\n");
-            if (qemu_log_separate()) {
-                qemu_log("Machine check while not allowed. "
-                        "Entering checkstop state\n");
-            }
-            cs->halted = 1;
-            cpu_interrupt_exittb(cs);
+            powerpc_checkstop(env);
         }
-
         /* machine check exceptions don't have ME set */
         new_msr &= ~((target_ulong)1 << MSR_ME);
 
@@ -599,20 +602,8 @@ static void powerpc_excp_6xx(PowerPCCPU *cpu, int excp)
         break;
     case POWERPC_EXCP_MCHECK:    /* Machine check exception                  */
         if (!FIELD_EX64(env->msr, MSR, ME)) {
-            /*
-             * Machine check exception is not enabled.  Enter
-             * checkstop state.
-             */
-            fprintf(stderr, "Machine check while not allowed. "
-                    "Entering checkstop state\n");
-            if (qemu_log_separate()) {
-                qemu_log("Machine check while not allowed. "
-                        "Entering checkstop state\n");
-            }
-            cs->halted = 1;
-            cpu_interrupt_exittb(cs);
+            powerpc_checkstop(env);
         }
-
         /* machine check exceptions don't have ME set */
         new_msr &= ~((target_ulong)1 << MSR_ME);
 
@@ -772,20 +763,8 @@ static void powerpc_excp_7xx(PowerPCCPU *cpu, int excp)
     switch (excp) {
     case POWERPC_EXCP_MCHECK:    /* Machine check exception                  */
         if (!FIELD_EX64(env->msr, MSR, ME)) {
-            /*
-             * Machine check exception is not enabled.  Enter
-             * checkstop state.
-             */
-            fprintf(stderr, "Machine check while not allowed. "
-                    "Entering checkstop state\n");
-            if (qemu_log_separate()) {
-                qemu_log("Machine check while not allowed. "
-                        "Entering checkstop state\n");
-            }
-            cs->halted = 1;
-            cpu_interrupt_exittb(cs);
+            powerpc_checkstop(env);
         }
-
         /* machine check exceptions don't have ME set */
         new_msr &= ~((target_ulong)1 << MSR_ME);
 
@@ -957,20 +936,8 @@ static void powerpc_excp_74xx(PowerPCCPU *cpu, int excp)
     switch (excp) {
     case POWERPC_EXCP_MCHECK:    /* Machine check exception                  */
         if (!FIELD_EX64(env->msr, MSR, ME)) {
-            /*
-             * Machine check exception is not enabled.  Enter
-             * checkstop state.
-             */
-            fprintf(stderr, "Machine check while not allowed. "
-                    "Entering checkstop state\n");
-            if (qemu_log_separate()) {
-                qemu_log("Machine check while not allowed. "
-                        "Entering checkstop state\n");
-            }
-            cs->halted = 1;
-            cpu_interrupt_exittb(cs);
+            powerpc_checkstop(env);
         }
-
         /* machine check exceptions don't have ME set */
         new_msr &= ~((target_ulong)1 << MSR_ME);
 
@@ -1152,20 +1119,8 @@ static void powerpc_excp_booke(PowerPCCPU *cpu, int excp)
         break;
     case POWERPC_EXCP_MCHECK:    /* Machine check exception                  */
         if (!FIELD_EX64(env->msr, MSR, ME)) {
-            /*
-             * Machine check exception is not enabled.  Enter
-             * checkstop state.
-             */
-            fprintf(stderr, "Machine check while not allowed. "
-                    "Entering checkstop state\n");
-            if (qemu_log_separate()) {
-                qemu_log("Machine check while not allowed. "
-                        "Entering checkstop state\n");
-            }
-            cs->halted = 1;
-            cpu_interrupt_exittb(cs);
+            powerpc_checkstop(env);
         }
-
         /* machine check exceptions don't have ME set */
         new_msr &= ~((target_ulong)1 << MSR_ME);
 
@@ -1469,18 +1424,7 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int excp)
     switch (excp) {
     case POWERPC_EXCP_MCHECK:    /* Machine check exception                  */
         if (!FIELD_EX64(env->msr, MSR, ME)) {
-            /*
-             * Machine check exception is not enabled.  Enter
-             * checkstop state.
-             */
-            fprintf(stderr, "Machine check while not allowed. "
-                    "Entering checkstop state\n");
-            if (qemu_log_separate()) {
-                qemu_log("Machine check while not allowed. "
-                        "Entering checkstop state\n");
-            }
-            cs->halted = 1;
-            cpu_interrupt_exittb(cs);
+            powerpc_checkstop(env);
         }
         if (env->msr_mask & MSR_HVB) {
             /*
-- 
2.40.1