1 files changed, 69 insertions, 0 deletions
diff --git a/libgloss/or1k/interrupts.c b/libgloss/or1k/interrupts.c
new file mode 100644
index 000000000..6badc497c
--- /dev/null
+++ b/libgloss/or1k/interrupts.c
@@ -0,0 +1,69 @@
+/* interrupts.c -- interrupt handling for OpenRISC 1000.
+ *
+ * Copyright (c) 2014 Authors
+ *
+ * Contributor Stefan Wallentowitz <stefan.wallentowitz@tum.de>
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+
+#include "include/or1k-support.h"
+#include "include/or1k-sprs.h"
+#include <stdint.h>
+
+#include "or1k-internals.h"
+
+#ifdef __OR1K_MULTICORE__
+or1k_interrupt_handler_table_t *_or1k_interrupt_handler_table;
+or1k_interrupt_handler_data_ptr_table_t *_or1k_interrupt_handler_data_ptr_table;
+#else
+or1k_interrupt_handler_table_t _or1k_interrupt_handler_table;
+or1k_interrupt_handler_data_ptr_table_t _or1k_interrupt_handler_data_ptr_table;
+#endif
+
+void or1k_interrupt_handler_add(uint32_t id,
+		or1k_interrupt_handler_fptr handler,
+		void *data_ptr)
+{
+#ifdef __OR1K_MULTICORE__
+	_or1k_interrupt_handler_table[or1k_coreid()][id] = handler;
+	_or1k_interrupt_handler_data_ptr_table[or1k_coreid()][id] = (uint32_t) data_ptr;
+#else
+	_or1k_interrupt_handler_table[id] = handler;
+	_or1k_interrupt_handler_data_ptr_table[id] = (uint32_t) data_ptr;
+#endif
+}
+
+void
+or1k_interrupts_enable(void)
+{
+	uint32_t sr = or1k_mfspr(OR1K_SPR_SYS_SR_ADDR);
+	sr = OR1K_SPR_SYS_SR_IEE_SET(sr, 1);
+	or1k_mtspr(OR1K_SPR_SYS_SR_ADDR, sr);
+}
+
+uint32_t
+or1k_interrupts_disable(void)
+{
+	uint32_t oldsr, newsr;
+	oldsr= or1k_mfspr(OR1K_SPR_SYS_SR_ADDR);
+	newsr = OR1K_SPR_SYS_SR_IEE_SET(oldsr, 0);
+	or1k_mtspr(OR1K_SPR_SYS_SR_ADDR, newsr);
+	return OR1K_SPR_SYS_SR_IEE_GET(oldsr);
+}
+
+void
+or1k_interrupts_restore(uint32_t sr_iee)
+{
+	uint32_t sr = or1k_mfspr(OR1K_SPR_SYS_SR_ADDR);
+	sr = OR1K_SPR_SYS_SR_IEE_SET(sr, sr_iee);
+	or1k_mtspr(OR1K_SPR_SYS_SR_ADDR, sr);
+}