| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <10dd59c17c7c6f4700d92f988292ee3bdcaad71b.1746997351.git.namcao@linutronix.de> Date: Sun, 11 May 2025 23:17:55 +0200 From: Nam Cao <namcao@...utronix.de> To: Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>, linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org Cc: Nam Cao <namcao@...utronix.de> Subject: [PATCH 03/11] riscv: kprobes: Remove duplication of RV_EXTRACT_JTYPE_IMM Use RV_EXTRACT_JTYPE_IMM, instead of reimplementing it in simulate_jal(). Signed-off-by: Nam Cao <namcao@...utronix.de> --- arch/riscv/kernel/probes/simulate-insn.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/arch/riscv/kernel/probes/simulate-insn.c b/arch/riscv/kernel/probes/simulate-insn.c index d5f74fadbc3a..b76a691d0d9a 100644 --- a/arch/riscv/kernel/probes/simulate-insn.c +++ b/arch/riscv/kernel/probes/simulate-insn.c @@ -41,19 +41,16 @@ bool __kprobes simulate_jal(u32 opcode, unsigned long addr, struct pt_regs *regs * 1 10 1 8 5 JAL/J */ bool ret; - u32 imm; + s32 imm; u32 index = (opcode >> 7) & 0x1f; ret = rv_insn_reg_set_val(regs, index, addr + 4); if (!ret) return ret; - imm = ((opcode >> 21) & 0x3ff) << 1; - imm |= ((opcode >> 20) & 0x1) << 11; - imm |= ((opcode >> 12) & 0xff) << 12; - imm |= ((opcode >> 31) & 0x1) << 20; + imm = RV_EXTRACT_JTYPE_IMM(opcode); - instruction_pointer_set(regs, addr + sign_extend32((imm), 20)); + instruction_pointer_set(regs, addr + imm); return ret; } -- 2.39.5
Powered by blists - more mailing lists