GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/arch/xtensa/cpu/exceptions.c

@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2008 - 2013 Tensilica Inc.
+ * (C) Copyright 2014 - 2016 Cadence Design Systems Inc.
+ */
+
+/*
+ * Exception handling.
+ *  We currently don't handle any exception and force a reset.
+ *  (Note that alloca is a special case and handled in start.S)
+ */
+
+#include <common.h>
+#include <command.h>
+#include <irq_func.h>
+#include <asm/string.h>
+#include <asm/regs.h>
+
+typedef void (*handler_t)(struct pt_regs *);
+
+void unhandled_exception(struct pt_regs *regs)
+{
+	printf("Unhandled Exception: EXCCAUSE = %ld, EXCVADDR = %lx, pc = %lx\n",
+	       regs->exccause, regs->excvaddr, regs->pc);
+	panic("*** PANIC\n");
+}
+
+handler_t exc_table[EXCCAUSE_LAST] = {
+	[0 ... EXCCAUSE_LAST-1]			= unhandled_exception,
+};
+
+int interrupt_init(void)
+{
+	return 0;
+}
+
+void enable_interrupts(void)
+{
+}
+
+int disable_interrupts(void)
+{
+	return 0;
+}