1 files changed, 55 insertions, 0 deletions
diff --git a/tools/src/exception.h b/tools/src/exception.h
new file mode 100644
index 0000000..786f38f
--- /dev/null
+++ b/tools/src/exception.h
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier: MIT */
+
+#ifndef __EXCEPTION_H__
+#define __EXCEPTION_H__
+
+#define SIZEOF_EXC_INFO (64 * 8)
+
+#ifndef __ASSEMBLER__
+
+#include <assert.h>
+#include <stdint.h>
+
+#include "types.h"
+
+enum exc_guard_t {
+    GUARD_OFF = 0,
+    GUARD_SKIP,
+    GUARD_MARK,
+    GUARD_RETURN,
+    GUARD_TYPE_MASK = 0xff,
+    GUARD_SILENT = 0x100,
+};
+
+struct exc_info {
+    u64 regs[32];
+    u64 spsr;
+    u64 elr;
+    u64 esr;
+    u64 far;
+    u64 afsr1;
+    u64 sp[3];
+    u64 cpu_id;
+    u64 mpidr;
+    u64 elr_phys;
+    u64 far_phys;
+    u64 sp_phys;
+    void *extra;
+};
+static_assert(sizeof(struct exc_info) <= SIZEOF_EXC_INFO, "Please increase SIZEOF_EXC_INFO");
+static_assert((sizeof(struct exc_info) & 15) == 0, "SIZEOF_EXC_INFO must be a multiple of 16");
+
+extern volatile enum exc_guard_t exc_guard;
+extern volatile int exc_count;
+
+void exception_initialize(void);
+void exception_shutdown(void);
+
+void print_regs(u64 *regs, int el12);
+
+uint64_t el0_call(void *func, uint64_t a, uint64_t b, uint64_t c, uint64_t d);
+uint64_t el1_call(void *func, uint64_t a, uint64_t b, uint64_t c, uint64_t d);
+
+#endif
+
+#endif