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riscv: kprobes: Remove duplication of RVC_EXTRACT_C2_RS1_REG

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Use RVC_EXTRACT_C2_RS1_REG, instead of reimplementing it in
simulate_c_jr_jalr().

Signed-off-by: Nam Cao <namcao@linutronix.de>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/linux-riscv/d56955cd683411c6d2f63d13c78e0572462a3269.1747215274.git.namcao@linutronix.de/
Signed-off-by: Paul Walmsley <pjw@kernel.org>
This commit is contained in:
Nam Cao 2025-05-11 23:17:59 +02:00 committed by Paul Walmsley
parent 05ede658d4
commit 580c11cd0b
1 changed files with 1 additions and 1 deletions
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arch/riscv/kernel/probes/simulate-insn.c
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@ -188,7 +188,7 @@ static bool __kprobes simulate_c_jr_jalr(u32 opcode, unsigned long addr, struct
unsigned long jump_addr;
u32 rs1 = (opcode >> 7) & 0x1f;
u32 rs1 = RVC_EXTRACT_C2_RS1_REG(opcode);
if (rs1 == 0) /* C.JR is only valid when rs1 != x0 */
return false;