unicore32: add target-unicore32 directory for unicore32-linux-user support

Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 50 insertions, 0 deletions

diff --git a/target-unicore32/exec.h b/target-unicore32/exec.h
new file mode 100644
index 0000000000..4ab55f42cf
--- /dev/null
+++ b/target-unicore32/exec.h
@@ -0,0 +1,50 @@
+/*
+ *  UniCore32 execution defines
+ *
+ * Copyright (C) 2010-2011 GUAN Xue-tao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __UC32_EXEC_H__
+#define __UC32_EXEC_H__
+
+#include "config.h"
+#include "dyngen-exec.h"
+
+register struct CPUState_UniCore32 *env asm(AREG0);
+
+#include "cpu.h"
+#include "exec-all.h"
+
+static inline void env_to_regs(void)
+{
+}
+
+static inline void regs_to_env(void)
+{
+}
+
+static inline int cpu_has_work(CPUState *env)
+{
+    return env->interrupt_request &
+        (CPU_INTERRUPT_HARD | CPU_INTERRUPT_EXITTB);
+}
+
+static inline int cpu_halted(CPUState *env)
+{
+    if (!env->halted) {
+        return 0;
+    }
+    /* An interrupt wakes the CPU even if the I and R ASR bits are
+       set.  We use EXITTB to silently wake CPU without causing an
+       actual interrupt.  */
+    if (cpu_has_work(env)) {
+        env->halted = 0;
+        return 0;
+    }
+    return EXCP_HALTED;
+}
+
+#endif /* __UC32_EXEC_H__ */