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[81.140.166.164]) by smtp.gmail.com with ESMTPSA id m10sm8562605wrx.19.2020.01.09.08.08.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Jan 2020 08:08:16 -0800 (PST) From: Julien Thierry To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: jpoimboe@redhat.com, peterz@infradead.org, raphael.gault@arm.com, catalin.marinas@arm.com, will@kernel.org, Julien Thierry Subject: [RFC v5 41/57] objtool: arm64: Decode FP/SIMD data processing instructions Date: Thu, 9 Jan 2020 16:02:44 +0000 Message-Id: <20200109160300.26150-42-jthierry@redhat.com> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200109160300.26150-1-jthierry@redhat.com> References: <20200109160300.26150-1-jthierry@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org FP/SIMD data processing instructions cannot modify the stack or frame pointer. Simply acknowledge the corresponding opcodes are valid. Suggested-by: Raphael Gault Signed-off-by: Julien Thierry --- tools/objtool/arch/arm64/decode.c | 9 +++++++++ tools/objtool/arch/arm64/include/insn_decode.h | 4 ++++ 2 files changed, 13 insertions(+) diff --git a/tools/objtool/arch/arm64/decode.c b/tools/objtool/arch/arm64/decode.c index bb1ba3b0997f..d35c2b58d309 100644 --- a/tools/objtool/arch/arm64/decode.c +++ b/tools/objtool/arch/arm64/decode.c @@ -130,11 +130,13 @@ static arm_decode_class aarch64_insn_class_decode_table[NR_INSN_CLASS] = { [INSN_LD_ST_4] = arm_decode_ld_st, [INSN_DP_REG_5] = arm_decode_dp_reg, [INSN_LD_ST_6] = arm_decode_ld_st, + [INSN_DP_SIMD_7] = arm_decode_dp_simd, [0b1000 ... INSN_DP_IMM] = arm_decode_dp_imm, [0b1010 ... INSN_SYS_BRANCH] = arm_decode_br_sys, [INSN_LD_ST_C] = arm_decode_ld_st, [INSN_DP_REG_D] = arm_decode_dp_reg, [INSN_LD_ST_E] = arm_decode_ld_st, + [INSN_DP_SIMD_F] = arm_decode_dp_simd, }; /* @@ -2746,3 +2748,10 @@ int arm_decode_dp_reg_3src(u32 instr, enum insn_type *type, *type = INSN_OTHER; return 0; } + +int arm_decode_dp_simd(u32 instr, enum insn_type *type, + unsigned long *immediate, struct list_head *ops_list) +{ + *type = INSN_OTHER; + return 0; +} diff --git a/tools/objtool/arch/arm64/include/insn_decode.h b/tools/objtool/arch/arm64/include/insn_decode.h index 8fb2f2b7564f..2bff4d7da007 100644 --- a/tools/objtool/arch/arm64/include/insn_decode.h +++ b/tools/objtool/arch/arm64/include/insn_decode.h @@ -16,6 +16,8 @@ #define INSN_LD_ST_E 0b1110 //0bx1x0 #define INSN_DP_REG_5 0b0101 //0bx101 #define INSN_DP_REG_D 0b1101 //0bx101 +#define INSN_DP_SIMD_7 0b0111 //0bx111 +#define INSN_DP_SIMD_F 0b1111 //0bx111 #define NR_INSN_CLASS 16 #define INSN_CLASS(opcode) (((opcode) >> 25) & (NR_INSN_CLASS - 1)) @@ -47,6 +49,8 @@ int arm_decode_br_sys(u32 instr, enum insn_type *type, unsigned long *immediate, struct list_head *ops_list); int arm_decode_ld_st(u32 instr, enum insn_type *type, unsigned long *immediate, struct list_head *ops_list); +int arm_decode_dp_simd(u32 instr, enum insn_type *type, + unsigned long *immediate, struct list_head *ops_list); int arm_decode_unknown(u32 instr, enum insn_type *type, unsigned long *immediate, struct list_head *ops_list); -- 2.21.0