新增所有文件

arch/include/armv7-r/irq.h

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+/*
+ * irq.h
+ *
+ * Copyright (c) 2020 Semidrive Semiconductor.
+ * All rights reserved.
+ *
+ * Description: ARM irq interface.
+ *
+ * Revision History:
+ * -----------------
+ */
+
+#ifndef INCLUDE_ARCH_IRQ_H
+#define INCLUDE_ARCH_IRQ_H
+
+#ifndef ASSEMBLY
+
+#include <compiler.h>
+#include <stdbool.h>
+
+__BEGIN_CDECLS
+
+/*
+ * irq state type.
+ */
+typedef unsigned int  irq_state_t;
+
+/*
+ * irq enable.
+ */
+static inline void arch_irq_enable(void)
+{
+    CF;
+    __ASM volatile("cpsie i");
+}
+
+/*
+ * irq disable.
+ */
+static inline void arch_irq_disable(void)
+{
+    __ASM volatile("cpsid i");
+    CF;
+}
+
+/*
+ * irq save.
+ *
+ * @return  old irq state.
+ */
+static inline irq_state_t arch_irq_save(void)
+{
+    unsigned int cpsr;
+
+    __ASM volatile
+    (
+        "\tmrs    %0, cpsr\n"
+        "\tcpsid  i\n"
+        : "=r" (cpsr)
+        :
+        : "memory"
+    );
+
+    return cpsr;
+}
+
+/*
+ * irq restore.
+ *
+ * @flags   old irq state.
+ */
+static inline void arch_irq_restore(irq_state_t flags)
+{
+    __ASM volatile
+    (
+        "msr    cpsr_c, %0"
+        :
+        : "r" (flags)
+        : "memory"
+    );
+}
+
+/*
+ * is irq masked.
+ *
+ * @return   masked or not.
+ */
+bool arch_irq_is_masked(void);
+
+/*
+ * is irq mode.
+ *
+ * @return   irq mode or not.
+ */
+bool arch_in_irq_mode(void);
+
+/**
+ * @brief Enable vectored interrupt mode.
+ */
+void arch_vectored_irq_enable(bool en);
+
+/**
+ * @brief Whether core is in FIQ mode or not
+ *
+ * @return true FIQ mode
+ * @return false otherwise
+ */
+bool arch_in_fiq_mode(void);
+
+__END_CDECLS
+
+#endif
+
+#endif