mirror of
https://github.com/pound-emu/ballistic.git
synced 2026-01-31 01:15:21 +01:00
318 lines
12 KiB
XML
318 lines
12 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
|
|
<?xml-stylesheet type="text/xsl" encoding="UTF-8" href="iform.xsl" version="1.0"?>
|
|
<!DOCTYPE instructionsection PUBLIC "-//ARM//DTD instructionsection //EN" "iform-p.dtd">
|
|
<!-- Copyright (c) 2010-2022 Arm Limited or its affiliates. All rights reserved. -->
|
|
<!-- This document is Non-Confidential. This document may only be used and distributed in accordance with the terms of the agreement entered into by Arm and the party that Arm delivered this document to. -->
|
|
|
|
<instructionsection id="AUTIB" title="AUTIB, AUTIB1716, AUTIBSP, AUTIBZ, AUTIZB -- A64" type="instruction">
|
|
<docvars>
|
|
<docvar key="isa" value="A64" />
|
|
</docvars>
|
|
<heading>AUTIB, AUTIB1716, AUTIBSP, AUTIBZ, AUTIZB</heading>
|
|
<desc>
|
|
<brief>
|
|
<para>Authenticate Instruction address, using key B</para>
|
|
</brief>
|
|
<authored>
|
|
<para>Authenticate Instruction address, using key B. This instruction authenticates an instruction address, using a modifier and key B.</para>
|
|
<para>The address is:</para>
|
|
<list type="unordered">
|
|
<listitem><content>In the general-purpose register that is specified by <syntax><Xd></syntax> for <instruction>AUTIB</instruction> and <instruction>AUTIZB</instruction>.</content></listitem>
|
|
<listitem><content>In X17, for <instruction>AUTIB1716</instruction>.</content></listitem>
|
|
<listitem><content>In X30, for <instruction>AUTIBSP</instruction> and <instruction>AUTIBZ</instruction>.</content></listitem>
|
|
</list>
|
|
<para>The modifier is:</para>
|
|
<list type="unordered">
|
|
<listitem><content>In the general-purpose register or stack pointer that is specified by <syntax><Xn|SP></syntax> for <instruction>AUTIB</instruction>.</content></listitem>
|
|
<listitem><content>The value zero, for <instruction>AUTIZB</instruction> and <instruction>AUTIBZ</instruction>.</content></listitem>
|
|
<listitem><content>In X16, for <instruction>AUTIB1716</instruction>.</content></listitem>
|
|
<listitem><content>In SP, for <instruction>AUTIBSP</instruction>.</content></listitem>
|
|
</list>
|
|
<para>If the authentication passes, the upper bits of the address are restored to enable subsequent use of the address. For information on behavior if the authentication fails, see <xref>Faulting on pointer authentication</xref>.</para>
|
|
</authored>
|
|
</desc>
|
|
<alias_list howmany="0"></alias_list>
|
|
<classes>
|
|
<classesintro count="2">
|
|
<txt>It has encodings from 2 classes:</txt>
|
|
<a href="#iclass_general">Integer</a>
|
|
<txt> and </txt>
|
|
<a href="#iclass_system">System</a>
|
|
</classesintro>
|
|
<iclass name="Integer" oneof="2" id="iclass_general" no_encodings="2" isa="A64">
|
|
<docvars>
|
|
<docvar key="instr-class" value="general" />
|
|
<docvar key="isa" value="A64" />
|
|
</docvars>
|
|
<iclassintro count="2"></iclassintro>
|
|
<arch_variants>
|
|
<arch_variant name="ARMv8.3" feature="FEAT_PAuth" />
|
|
</arch_variants>
|
|
<regdiagram form="32" psname="aarch64/instrs/integer/pac/autib/dp_1src">
|
|
<box hibit="31" name="sf" settings="1">
|
|
<c>1</c>
|
|
</box>
|
|
<box hibit="30" settings="1">
|
|
<c>1</c>
|
|
</box>
|
|
<box hibit="29" name="S" settings="1">
|
|
<c>0</c>
|
|
</box>
|
|
<box hibit="28" width="8" settings="8">
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>0</c>
|
|
<c>1</c>
|
|
<c>0</c>
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>0</c>
|
|
</box>
|
|
<box hibit="20" width="5" name="opcode2" settings="5">
|
|
<c>0</c>
|
|
<c>0</c>
|
|
<c>0</c>
|
|
<c>0</c>
|
|
<c>1</c>
|
|
</box>
|
|
<box hibit="15" name="opcode[5]" settings="1">
|
|
<c>0</c>
|
|
</box>
|
|
<box hibit="14" name="opcode[4]" settings="1">
|
|
<c>0</c>
|
|
</box>
|
|
<box hibit="13" name="Z" usename="1">
|
|
<c></c>
|
|
</box>
|
|
<box hibit="12" width="3" name="opcode[2:0]" settings="3">
|
|
<c>1</c>
|
|
<c>0</c>
|
|
<c>1</c>
|
|
</box>
|
|
<box hibit="9" width="5" name="Rn" usename="1">
|
|
<c colspan="5"></c>
|
|
</box>
|
|
<box hibit="4" width="5" name="Rd" usename="1">
|
|
<c colspan="5"></c>
|
|
</box>
|
|
</regdiagram>
|
|
<encoding name="AUTIB_64P_dp_1src" oneofinclass="2" oneof="5" label="AUTIB" bitdiffs="Z == 0">
|
|
<docvars>
|
|
<docvar key="instr-class" value="general" />
|
|
<docvar key="isa" value="A64" />
|
|
<docvar key="mnemonic" value="AUTIB" />
|
|
</docvars>
|
|
<box hibit="13" width="1" name="Z">
|
|
<c>0</c>
|
|
</box>
|
|
<asmtemplate><text>AUTIB </text><a link="sa_xd" hover="64-bit general-purpose destination register (field "Rd")"><Xd></a><text>, </text><a link="sa_xn_sp" hover="64-bit general-purpose source register or SP (field "Rn")"><Xn|SP></a></asmtemplate>
|
|
</encoding>
|
|
<encoding name="AUTIZB_64Z_dp_1src" oneofinclass="2" oneof="5" label="AUTIZB" bitdiffs="Z == 1 && Rn == 11111">
|
|
<docvars>
|
|
<docvar key="instr-class" value="general" />
|
|
<docvar key="isa" value="A64" />
|
|
<docvar key="mnemonic" value="AUTIZB" />
|
|
</docvars>
|
|
<box hibit="13" width="1" name="Z">
|
|
<c>1</c>
|
|
</box>
|
|
<box hibit="9" width="5" name="Rn">
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>1</c>
|
|
</box>
|
|
<asmtemplate><text>AUTIZB </text><a link="sa_xd" hover="64-bit general-purpose destination register (field "Rd")"><Xd></a></asmtemplate>
|
|
</encoding>
|
|
<ps_section howmany="1">
|
|
<ps name="aarch64/instrs/integer/pac/autib/dp_1src" mylink="aarch64.instrs.integer.pac.autib.dp_1src" enclabels="" sections="1" secttype="noheading">
|
|
<pstext mayhavelinks="1" section="Decode" rep_section="decode">boolean source_is_sp = FALSE;
|
|
integer d = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Rd);
|
|
integer n = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Rn);
|
|
|
|
if !<a link="impl-aarch64.HavePACExt.0" file="shared_pseudocode.xml" hover="function: boolean HavePACExt()">HavePACExt</a>() then
|
|
UNDEFINED;
|
|
|
|
if Z == '0' then // AUTIB
|
|
if n == 31 then source_is_sp = TRUE;
|
|
else // AUTIZB
|
|
if n != 31 then UNDEFINED;</pstext>
|
|
</ps>
|
|
</ps_section>
|
|
</iclass>
|
|
<iclass name="System" oneof="2" id="iclass_system" no_encodings="3" isa="A64">
|
|
<docvars>
|
|
<docvar key="instr-class" value="system" />
|
|
<docvar key="isa" value="A64" />
|
|
</docvars>
|
|
<iclassintro count="3"></iclassintro>
|
|
<arch_variants>
|
|
<arch_variant name="ARMv8.3" feature="FEAT_PAuth" />
|
|
</arch_variants>
|
|
<regdiagram form="32" psname="aarch64/instrs/integer/pac/autib/hint" tworows="1">
|
|
<box hibit="31" width="10" settings="10">
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>0</c>
|
|
<c>1</c>
|
|
<c>0</c>
|
|
<c>1</c>
|
|
<c>0</c>
|
|
<c>1</c>
|
|
<c>0</c>
|
|
<c>0</c>
|
|
</box>
|
|
<box hibit="21" name="L" settings="1">
|
|
<c>0</c>
|
|
</box>
|
|
<box hibit="20" width="2" name="op0" settings="2">
|
|
<c>0</c>
|
|
<c>0</c>
|
|
</box>
|
|
<box hibit="18" width="3" name="op1" settings="3">
|
|
<c>0</c>
|
|
<c>1</c>
|
|
<c>1</c>
|
|
</box>
|
|
<box hibit="15" width="4" name="CRn" settings="4">
|
|
<c>0</c>
|
|
<c>0</c>
|
|
<c>1</c>
|
|
<c>0</c>
|
|
</box>
|
|
<box hibit="11" width="4" name="CRm" usename="1" settings="3" psbits="xxxx">
|
|
<c>0</c>
|
|
<c>0</c>
|
|
<c>x</c>
|
|
<c>1</c>
|
|
</box>
|
|
<box hibit="7" width="3" name="op2" usename="1" settings="2" psbits="xxx">
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>x</c>
|
|
</box>
|
|
<box hibit="4" width="5" name="Rt" settings="5">
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>1</c>
|
|
<c>1</c>
|
|
</box>
|
|
</regdiagram>
|
|
<encoding name="AUTIB1716_HI_hints" oneofinclass="3" oneof="5" label="AUTIB1716" bitdiffs="CRm == 0001 && op2 == 110">
|
|
<docvars>
|
|
<docvar key="instr-class" value="system" />
|
|
<docvar key="isa" value="A64" />
|
|
<docvar key="mnemonic" value="AUTIB1716" />
|
|
</docvars>
|
|
<box hibit="11" width="4" name="CRm">
|
|
<c></c>
|
|
<c></c>
|
|
<c>0</c>
|
|
<c></c>
|
|
</box>
|
|
<box hibit="7" width="3" name="op2">
|
|
<c></c>
|
|
<c></c>
|
|
<c>0</c>
|
|
</box>
|
|
<asmtemplate><text>AUTIB1716</text></asmtemplate>
|
|
</encoding>
|
|
<encoding name="AUTIBSP_HI_hints" oneofinclass="3" oneof="5" label="AUTIBSP" bitdiffs="CRm == 0011 && op2 == 111">
|
|
<docvars>
|
|
<docvar key="instr-class" value="system" />
|
|
<docvar key="isa" value="A64" />
|
|
<docvar key="mnemonic" value="AUTIBSP" />
|
|
</docvars>
|
|
<box hibit="11" width="4" name="CRm">
|
|
<c></c>
|
|
<c></c>
|
|
<c>1</c>
|
|
<c></c>
|
|
</box>
|
|
<box hibit="7" width="3" name="op2">
|
|
<c></c>
|
|
<c></c>
|
|
<c>1</c>
|
|
</box>
|
|
<asmtemplate><text>AUTIBSP</text></asmtemplate>
|
|
</encoding>
|
|
<encoding name="AUTIBZ_HI_hints" oneofinclass="3" oneof="5" label="AUTIBZ" bitdiffs="CRm == 0011 && op2 == 110">
|
|
<docvars>
|
|
<docvar key="instr-class" value="system" />
|
|
<docvar key="isa" value="A64" />
|
|
<docvar key="mnemonic" value="AUTIBZ" />
|
|
</docvars>
|
|
<box hibit="11" width="4" name="CRm">
|
|
<c></c>
|
|
<c></c>
|
|
<c>1</c>
|
|
<c></c>
|
|
</box>
|
|
<box hibit="7" width="3" name="op2">
|
|
<c></c>
|
|
<c></c>
|
|
<c>0</c>
|
|
</box>
|
|
<asmtemplate><text>AUTIBZ</text></asmtemplate>
|
|
</encoding>
|
|
<ps_section howmany="1">
|
|
<ps name="aarch64/instrs/integer/pac/autib/hint" mylink="aarch64.instrs.integer.pac.autib.hint" enclabels="" sections="1" secttype="noheading">
|
|
<pstext mayhavelinks="1" section="Decode" rep_section="decode">integer d;
|
|
integer n;
|
|
boolean source_is_sp = FALSE;
|
|
|
|
case CRm:op2 of
|
|
when '0011 110' // AUTIBZ
|
|
d = 30;
|
|
n = 31;
|
|
when '0011 111' // AUTIBSP
|
|
d = 30;
|
|
source_is_sp = TRUE;
|
|
when '0001 110' // AUTIB1716
|
|
d = 17;
|
|
n = 16;
|
|
when '0001 000' SEE "PACIA";
|
|
when '0001 010' SEE "PACIB";
|
|
when '0001 100' SEE "AUTIA";
|
|
when '0011 00x' SEE "PACIA";
|
|
when '0011 01x' SEE "PACIB";
|
|
when '0011 10x' SEE "AUTIA";
|
|
when '0000 111' SEE "XPACLRI";
|
|
otherwise SEE "HINT";</pstext>
|
|
</ps>
|
|
</ps_section>
|
|
</iclass>
|
|
</classes>
|
|
<explanations scope="all">
|
|
<explanation enclist="AUTIB_64P_dp_1src, AUTIZB_64Z_dp_1src" symboldefcount="1">
|
|
<symbol link="sa_xd"><Xd></symbol>
|
|
<account encodedin="Rd">
|
|
<intro>
|
|
<para>Is the 64-bit name of the general-purpose destination register, encoded in the "Rd" field.</para>
|
|
</intro>
|
|
</account>
|
|
</explanation>
|
|
<explanation enclist="AUTIB_64P_dp_1src" symboldefcount="1">
|
|
<symbol link="sa_xn_sp"><Xn|SP></symbol>
|
|
<account encodedin="Rn">
|
|
<intro>
|
|
<para>Is the 64-bit name of the general-purpose source register or stack pointer, encoded in the "Rn" field.</para>
|
|
</intro>
|
|
</account>
|
|
</explanation>
|
|
</explanations>
|
|
<ps_section howmany="1">
|
|
<ps name="aarch64/instrs/integer/pac/autib/dp_1src" mylink="execute" enclabels="" sections="1" secttype="Operation">
|
|
<pstext mayhavelinks="1" section="Execute" rep_section="execute">auth_then_branch = FALSE;
|
|
|
|
if <a link="impl-aarch64.HavePACExt.0" file="shared_pseudocode.xml" hover="function: boolean HavePACExt()">HavePACExt</a>() then
|
|
if source_is_sp then
|
|
<a link="impl-aarch64.X.write.2" file="shared_pseudocode.xml" hover="accessor: X[integer n, integer width] = bits(width) value">X</a>[d, 64] = AuthIB(X[d, 64], SP[], auth_then_branch);
|
|
else
|
|
<a link="impl-aarch64.X.write.2" file="shared_pseudocode.xml" hover="accessor: X[integer n, integer width] = bits(width) value">X</a>[d, 64] = AuthIB(X[d, 64], X[n, 64], auth_then_branch);</pstext>
|
|
</ps>
|
|
</ps_section>
|
|
</instructionsection>
|