[PATCH 2/2] riscv: kprobes: add nop and c.nop to the KUnit test

[Xiaofeng Yuan <yuanxiaofeng@eswincomputing.com>]

Extend the RISC-V kprobes KUnit test with test_kprobes_nop and
test_kprobes_c_nop, covering both the 32-bit nop and the
compressed c.nop simulation paths.

Signed-off-by: Xiaofeng Yuan <yuanxiaofeng@eswincomputing.com>
---
 .../kernel/tests/kprobes/test-kprobes-asm.S   | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/arch/riscv/kernel/tests/kprobes/test-kprobes-asm.S b/arch/riscv/kernel/tests/kprobes/test-kprobes-asm.S
index f16deee9e0..8d8f460cb6 100644
--- a/arch/riscv/kernel/tests/kprobes/test-kprobes-asm.S
+++ b/arch/riscv/kernel/tests/kprobes/test-kprobes-asm.S
@@ -181,6 +181,29 @@ SYM_FUNC_END(test_kprobes_c_bnez)
 
 #endif /* CONFIG_RISCV_ISA_C */
 
+SYM_FUNC_START(test_kprobes_nop)
+	.option push
+	.option norvc
+test_kprobes_nop_addr:
+	nop
+	.option pop
+	li a0, KPROBE_TEST_MAGIC_LOWER
+	li a1, KPROBE_TEST_MAGIC_UPPER
+	add a0, a0, a1
+	ret
+SYM_FUNC_END(test_kprobes_nop)
+
+#ifdef CONFIG_RISCV_ISA_C
+SYM_FUNC_START(test_kprobes_c_nop)
+test_kprobes_c_nop_addr:
+	c.nop
+	li a0, KPROBE_TEST_MAGIC_LOWER
+	li a1, KPROBE_TEST_MAGIC_UPPER
+	add a0, a0, a1
+	ret
+SYM_FUNC_END(test_kprobes_c_nop)
+#endif /* CONFIG_RISCV_ISA_C */
+
 .section .rodata
 SYM_DATA_START(test_kprobes_addresses)
 	RISCV_PTR test_kprobes_add_addr1
@@ -197,7 +220,9 @@ SYM_DATA_START(test_kprobes_addresses)
 	RISCV_PTR test_kprobes_branch_addr6
 	RISCV_PTR test_kprobes_branch_addr7
 	RISCV_PTR test_kprobes_branch_addr8
+	RISCV_PTR test_kprobes_nop_addr
 #ifdef CONFIG_RISCV_ISA_C
+	RISCV_PTR test_kprobes_c_nop_addr
 	RISCV_PTR test_kprobes_branch_c_j_addr1
 	RISCV_PTR test_kprobes_branch_c_j_addr2
 	RISCV_PTR test_kprobes_c_jr_addr1
@@ -220,7 +245,9 @@ SYM_DATA_START(test_kprobes_functions)
 	RISCV_PTR test_kprobes_jalr
 	RISCV_PTR test_kprobes_auipc
 	RISCV_PTR test_kprobes_branch
+	RISCV_PTR test_kprobes_nop
 #ifdef CONFIG_RISCV_ISA_C
+	RISCV_PTR test_kprobes_c_nop
 	RISCV_PTR test_kprobes_c_j
 	RISCV_PTR test_kprobes_c_jr
 	RISCV_PTR test_kprobes_c_jalr
-- 
2.43.0