When handeling traps and faults it is offten necessary to know the size
of the instruction at epc. Add RV_INSN_LEN to calculate the
instruction size.
Signed-off-by: Jesse Taube <jesse@xxxxxxxxxxxx>
---
lib/riscv/asm/processor.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/lib/riscv/asm/processor.h b/lib/riscv/asm/processor.h
index 40104272..631ce226 100644
--- a/lib/riscv/asm/processor.h
+++ b/lib/riscv/asm/processor.h
@@ -7,6 +7,8 @@
#define EXCEPTION_CAUSE_MAX 24
#define INTERRUPT_CAUSE_MAX 16
+#define RV_INSN_LEN(insn) ((((insn) & 0x3) < 0x3) ? 2 : 4)
+
typedef void (*exception_fn)(struct pt_regs *);
struct thread_info {
--
2.43.0
