87 static int get_reg_offset(struct insn *insn, struct pt_regs *regs,  in get_reg_offset()  argument
117 	if (IS_ENABLED(CONFIG_X86_64) && !insn->x86_64)  in get_reg_offset()
122 		regno = X86_MODRM_RM(insn->modrm.value);  in get_reg_offset()
123 		if (X86_REX_B(insn->rex_prefix.value))  in get_reg_offset()
128 		regno = X86_SIB_INDEX(insn->sib.value);  in get_reg_offset()
129 		if (X86_REX_X(insn->rex_prefix.value))  in get_reg_offset()
134 		regno = X86_SIB_BASE(insn->sib.value);  in get_reg_offset()
135 		if (X86_REX_B(insn->rex_prefix.value))  in get_reg_offset()
157 static void __user *mpx_get_addr_ref(struct insn *insn, struct pt_regs *regs)  in mpx_get_addr_ref()  argument
163 	insn_get_modrm(insn);  in mpx_get_addr_ref()
164 	insn_get_sib(insn);  in mpx_get_addr_ref()
165 	sib = insn->sib.value;  in mpx_get_addr_ref()
167 	if (X86_MODRM_MOD(insn->modrm.value) == 3) {  in mpx_get_addr_ref()
168 		addr_offset = get_reg_offset(insn, regs, REG_TYPE_RM);  in mpx_get_addr_ref()
173 		if (insn->sib.nbytes) {  in mpx_get_addr_ref()
174 			base_offset = get_reg_offset(insn, regs, REG_TYPE_BASE);  in mpx_get_addr_ref()
178 			indx_offset = get_reg_offset(insn, regs, REG_TYPE_INDEX);  in mpx_get_addr_ref()
186 			addr_offset = get_reg_offset(insn, regs, REG_TYPE_RM);  in mpx_get_addr_ref()
191 		addr += insn->displacement.value;  in mpx_get_addr_ref()
198 static int mpx_insn_decode(struct insn *insn,  in mpx_insn_decode()  argument
215 	insn_init(insn, buf, nr_copied, x86_64);  in mpx_insn_decode()
216 	insn_get_length(insn);  in mpx_insn_decode()
225 	if (nr_copied < insn->length)  in mpx_insn_decode()
228 	insn_get_opcode(insn);  in mpx_insn_decode()
233 	if (insn->opcode.bytes[0] != 0x0f)  in mpx_insn_decode()
235 	if ((insn->opcode.bytes[1] != 0x1a) &&  in mpx_insn_decode()
236 	    (insn->opcode.bytes[1] != 0x1b))  in mpx_insn_decode()
262 	struct insn insn;  in mpx_generate_siginfo()  local
266 	err = mpx_insn_decode(&insn, regs);  in mpx_generate_siginfo()
274 	insn_get_modrm(&insn);  in mpx_generate_siginfo()
275 	bndregno = X86_MODRM_REG(insn.modrm.value);  in mpx_generate_siginfo()
310 	info->si_addr = mpx_get_addr_ref(&insn, regs);  in mpx_generate_siginfo()