1 files changed, 83 insertions, 0 deletions
diff --git a/target-ppc/helper.c b/target-ppc/helper.c
index b86f8234e6..4356edc36c 100644
--- a/target-ppc/helper.c
+++ b/target-ppc/helper.c
@@ -1229,6 +1229,13 @@ void do_interrupt (CPUState *env)
 {
     env->exception_index = -1;
 }
+
+int ppc_hw_interrupt (CPUState *env)
+{
+    env->exception_index = -1;
+
+    return 0;
+}
 #else /* defined (CONFIG_USER_ONLY) */
 static void dump_syscall(CPUState *env)
 {
@@ -1753,4 +1760,80 @@ void do_interrupt (CPUState *env)
     env->nip = excp;
     env->exception_index = EXCP_NONE;
 }
+
+int ppc_hw_interrupt (CPUState *env)
+{
+    int raised = 0;
+
+#if 0
+    printf("%s: %p pending %08x req %08x %08x me %d ee %d\n",
+           __func__, env, env->pending_interrupts,
+           env->interrupt_request, interrupt_request,
+           msr_me, msr_ee);
+#endif
+    /* Raise it */
+    if (env->pending_interrupts & (1 << PPC_INTERRUPT_RESET)) {
+        /* External reset / critical input */
+        env->exception_index = EXCP_RESET;
+        env->pending_interrupts &= ~(1 << PPC_INTERRUPT_RESET);
+        raised = 1;
+    }
+    if (raised == 0 && msr_me != 0) {
+        /* Machine check exception */
+        if (env->pending_interrupts & (1 << PPC_INTERRUPT_MCK)) {
+            env->exception_index = EXCP_MACHINE_CHECK;
+            env->pending_interrupts &= ~(1 << PPC_INTERRUPT_MCK);
+            raised = 1;
+        }
+    }
+    if (raised == 0 && msr_ee != 0) {
+#if defined(TARGET_PPC64H) /* PowerPC 64 with hypervisor mode support */
+        /* Hypervisor decrementer exception */
+        if (env->pending_interrupts & (1 << PPC_INTERRUPT_HDECR)) {
+            env->exception_index = EXCP_HDECR;
+            env->pending_interrupts &= ~(1 << PPC_INTERRUPT_HDECR);
+            raised = 1;
+        } else
+#endif
+        /* Decrementer exception */
+        if (env->pending_interrupts & (1 << PPC_INTERRUPT_DECR)) {
+            env->exception_index = EXCP_DECR;
+            env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DECR);
+            raised = 1;
+        /* Programmable interval timer on embedded PowerPC */
+        } else if (env->pending_interrupts & (1 << PPC_INTERRUPT_PIT)) {
+            env->exception_index = EXCP_40x_PIT;
+            env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PIT);
+            raised = 1;
+        /* Fixed interval timer on embedded PowerPC */
+        } else if (env->pending_interrupts & (1 << PPC_INTERRUPT_FIT)) {
+            env->exception_index = EXCP_40x_FIT;
+            env->pending_interrupts &= ~(1 << PPC_INTERRUPT_FIT);
+            raised = 1;
+        /* Watchdog timer on embedded PowerPC */
+        } else if (env->pending_interrupts & (1 << PPC_INTERRUPT_WDT)) {
+            env->exception_index = EXCP_40x_WATCHDOG;
+            env->pending_interrupts &= ~(1 << PPC_INTERRUPT_WDT);
+            raised = 1;
+        /* External interrupt */
+        } else if (env->pending_interrupts & (1 << PPC_INTERRUPT_EXT)) {
+            env->exception_index = EXCP_EXTERNAL;
+            env->pending_interrupts &= ~(1 << PPC_INTERRUPT_EXT);
+            raised = 1;
+        }
+#if 0 // TODO
+    /* External debug exception */
+    } else if (env->pending_interrupts & (1 << PPC_INTERRUPT_DEBUG)) {
+        env->exception_index = EXCP_xxx;
+        env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DEBUG);
+        raised = 1;
+#endif
+    }
+    if (raised != 0) {
+        env->error_code = 0;
+        do_interrupt(env);
+    }
+    
+    return raised;
+}
 #endif /* !CONFIG_USER_ONLY */