D23507.diff
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	Index: head/sys/riscv/include/db_machdep.h
	===================================================================
	--- head/sys/riscv/include/db_machdep.h
	+++ head/sys/riscv/include/db_machdep.h
	@@ -53,8 +53,14 @@
	#define BKPT_SIZE (INSN_SIZE)
	#define BKPT_SET(inst) (BKPT_INST)

	-#define BKPT_SKIP do { \
	- kdb_frame->tf_sepc += BKPT_SIZE; \
	+#define BKPT_SKIP do { \
	+ uint32_t _instr; \
	+ \
	+ _instr = db_get_value(PC_REGS(), sizeof(uint32_t), FALSE); \
	+ if ((_instr & 0x3) == 0x3) \
	+ kdb_frame->tf_sepc += 4; /* ebreak */ \
	+ else \
	+ kdb_frame->tf_sepc += 2; /* c.ebreak */ \
	} while (0)

	#define db_clear_single_step kdb_cpu_clear_singlestep