target/arm/hvf: Factor hvf_handle_exception() out

Factor hvf_handle_exception() out of hvf_vcpu_exec().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Mads Ynddal <mads@ynddal.dk>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

target/arm/hvf/hvf.c

@@ -1802,61 +1802,15 @@ static void hvf_sync_vtimer(CPUState *cpu)
     }
 }
 
-int hvf_arch_vcpu_exec(CPUState *cpu)
+static int hvf_handle_exception(CPUState *cpu, hv_vcpu_exit_exception_t *excp)
 {
-    ARMCPU *arm_cpu = ARM_CPU(cpu);
-    CPUARMState *env = &arm_cpu->env;
-    int ret;
-    hv_vcpu_exit_t *hvf_exit = cpu->accel->exit;
-    hv_return_t r;
-    bool advance_pc = false;
-
-    if (!(cpu->singlestep_enabled & SSTEP_NOIRQ) &&
-        hvf_inject_interrupts(cpu)) {
-        return EXCP_INTERRUPT;
-    }
-
-    if (cpu->halted) {
-        return EXCP_HLT;
-    }
-
-    flush_cpu_state(cpu);
-
-    bql_unlock();
-    r = hv_vcpu_run(cpu->accel->fd);
-    bql_lock();
-    switch (r) {
-    case HV_SUCCESS:
-        break;
-    case HV_ILLEGAL_GUEST_STATE:
-        trace_hvf_illegal_guest_state();
-        /* fall through */
-    default:
-        g_assert_not_reached();
-    }
-
-    /* handle VMEXIT */
-    uint64_t exit_reason = hvf_exit->reason;
-    uint64_t syndrome = hvf_exit->exception.syndrome;
+    CPUARMState *env = cpu_env(cpu);
+    ARMCPU *arm_cpu = env_archcpu(env);
+    uint64_t syndrome = excp->syndrome;
     uint32_t ec = syn_get_ec(syndrome);
-
-    ret = 0;
-    switch (exit_reason) {
-    case HV_EXIT_REASON_EXCEPTION:
-        /* This is the main one, handle below. */
-        break;
-    case HV_EXIT_REASON_VTIMER_ACTIVATED:
-        qemu_set_irq(arm_cpu->gt_timer_outputs[GTIMER_VIRT], 1);
-        cpu->accel->vtimer_masked = true;
-        return 0;
-    case HV_EXIT_REASON_CANCELED:
-        /* we got kicked, no exit to process */
-        return 0;
-    default:
-        g_assert_not_reached();
-    }
-
-    hvf_sync_vtimer(cpu);
+    bool advance_pc = false;
+    hv_return_t r;
+    int ret = 0;
 
     switch (ec) {
     case EC_SOFTWARESTEP: {
@@ -1895,7 +1849,7 @@ int hvf_arch_vcpu_exec(CPUState *cpu)
         cpu_synchronize_state(cpu);
 
         CPUWatchpoint *wp =
-            find_hw_watchpoint(cpu, hvf_exit->exception.virtual_address);
+            find_hw_watchpoint(cpu, excp->virtual_address);
         if (!wp) {
             error_report("EXCP_DEBUG but unknown hw watchpoint");
         }
@@ -1913,8 +1867,8 @@ int hvf_arch_vcpu_exec(CPUState *cpu)
         uint32_t cm = (syndrome >> 8) & 0x1;
         uint64_t val = 0;
 
-        trace_hvf_data_abort(hvf_exit->exception.virtual_address,
-                             hvf_exit->exception.physical_address, isv,
+        trace_hvf_data_abort(excp->virtual_address,
+                             excp->physical_address, isv,
                              iswrite, s1ptw, len, srt);
 
         if (cm) {
@@ -1928,11 +1882,11 @@ int hvf_arch_vcpu_exec(CPUState *cpu)
         if (iswrite) {
             val = hvf_get_reg(cpu, srt);
             address_space_write(&address_space_memory,
-                                hvf_exit->exception.physical_address,
+                                excp->physical_address,
                                 MEMTXATTRS_UNSPECIFIED, &val, len);
         } else {
             address_space_read(&address_space_memory,
-                               hvf_exit->exception.physical_address,
+                               excp->physical_address,
                                MEMTXATTRS_UNSPECIFIED, &val, len);
             if (sse) {
                 val = sextract64(val, 0, len * 8);
@@ -2030,6 +1984,59 @@ int hvf_arch_vcpu_exec(CPUState *cpu)
     return ret;
 }
 
+int hvf_arch_vcpu_exec(CPUState *cpu)
+{
+    ARMCPU *arm_cpu = ARM_CPU(cpu);
+    hv_vcpu_exit_t *hvf_exit = cpu->accel->exit;
+    hv_return_t r;
+
+    if (!(cpu->singlestep_enabled & SSTEP_NOIRQ) &&
+        hvf_inject_interrupts(cpu)) {
+        return EXCP_INTERRUPT;
+    }
+
+    if (cpu->halted) {
+        return EXCP_HLT;
+    }
+
+    flush_cpu_state(cpu);
+
+    bql_unlock();
+    r = hv_vcpu_run(cpu->accel->fd);
+    bql_lock();
+    switch (r) {
+    case HV_SUCCESS:
+        break;
+    case HV_ILLEGAL_GUEST_STATE:
+        trace_hvf_illegal_guest_state();
+        /* fall through */
+    default:
+        g_assert_not_reached();
+    }
+
+    /* handle VMEXIT */
+    uint64_t exit_reason = hvf_exit->reason;
+
+    switch (exit_reason) {
+    case HV_EXIT_REASON_EXCEPTION:
+        /* This is the main one, handle below. */
+        break;
+    case HV_EXIT_REASON_VTIMER_ACTIVATED:
+        qemu_set_irq(arm_cpu->gt_timer_outputs[GTIMER_VIRT], 1);
+        cpu->accel->vtimer_masked = true;
+        return 0;
+    case HV_EXIT_REASON_CANCELED:
+        /* we got kicked, no exit to process */
+        return 0;
+    default:
+        g_assert_not_reached();
+    }
+
+    hvf_sync_vtimer(cpu);
+
+    return hvf_handle_exception(cpu, &hvf_exit->exception);
+}
+
 static const VMStateDescription vmstate_hvf_vtimer = {
     .name = "hvf-vtimer",
     .version_id = 1,