294 lines
15 KiB
XML
294 lines
15 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<?xml-stylesheet type="text/xsl" encoding="UTF-8" href="iform.xsl" version="1.0"?>
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<!DOCTYPE instructionsection PUBLIC "-//ARM//DTD instructionsection //EN" "iform-p.dtd">
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<!-- Copyright (c) 2010-2022 Arm Limited or its affiliates. All rights reserved. -->
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<!-- 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. -->
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<instructionsection id="ASR_MOV_r" title="ASR (immediate) -- AArch32" type="alias">
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<docvars>
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<docvar key="alias_mnemonic" value="ASR" />
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<docvar key="instr-class" value="general" />
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<docvar key="mnemonic" value="MOV" />
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</docvars>
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<heading>ASR (immediate)</heading>
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<desc>
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<brief>
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<para>Arithmetic Shift Right (immediate)</para>
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</brief>
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<authored>
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<para>Arithmetic Shift Right (immediate) shifts a register value right by an immediate number of bits, shifting in copies of its sign bit, and writes the result to the destination register.</para>
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</authored>
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</desc>
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<aliasto refiform="mov_r.xml" iformid="MOV_r">MOV, MOVS (register)</aliasto>
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<classes>
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<classesintro count="3">
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<txt>It has encodings from the following instruction sets:</txt>
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<txt> A32 (</txt>
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<a href="#iclass_a1">A1</a>
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<txt>)</txt>
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<txt> and </txt>
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<txt> T32 (</txt>
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<a href="#iclass_t2">T2</a>
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<txt> and </txt>
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<a href="#iclass_t3">T3</a>
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<txt>)</txt>
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<txt>.</txt>
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</classesintro>
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<iclass name="A1" oneof="3" id="iclass_a1" no_encodings="1" isa="A32">
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<docvars>
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<docvar key="armarmheading" value="A1" />
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<docvar key="instr-class" value="general" />
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<docvar key="isa" value="A32" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="32" psname="" tworows="1">
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<box hibit="31" width="4" name="cond" usename="1" settings="4" constraint="!= 1111">
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<c colspan="4">!= 1111</c>
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</box>
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<box hibit="27" width="5" settings="5">
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<c>0</c>
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<c>0</c>
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<c>0</c>
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<c>1</c>
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<c>1</c>
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</box>
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<box hibit="22" width="2" name="opc" settings="2">
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<c>0</c>
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<c>1</c>
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</box>
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<box hibit="20" name="S" usename="1" settings="1">
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<c>0</c>
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</box>
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<box hibit="19" width="4" name="Rn" settings="4">
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<c>(0)</c>
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<c>(0)</c>
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<c>(0)</c>
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<c>(0)</c>
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</box>
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<box hibit="15" width="4" name="Rd" usename="1">
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<c colspan="4"></c>
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</box>
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<box hibit="11" width="5" name="imm5" usename="1">
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<c colspan="5"></c>
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</box>
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<box hibit="6" width="2" name="stype" usename="1" settings="2">
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<c>1</c>
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<c>0</c>
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</box>
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<box hibit="4" settings="1">
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<c>0</c>
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</box>
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<box hibit="3" width="4" name="Rm" usename="1">
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<c colspan="4"></c>
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</box>
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</regdiagram>
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<encoding name="ASR_MOV_r_A1" oneofinclass="1" oneof="3" label="MOV, shift or rotate by value">
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<docvars>
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<docvar key="alias_mnemonic" value="ASR" />
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<docvar key="armarmheading" value="A1" />
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<docvar key="instr-class" value="general" />
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<docvar key="isa" value="A32" />
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<docvar key="mnemonic" value="MOV" />
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<docvar key="mnemonic-shift-type" value="MOV-shift-no-rrx" />
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<docvar key="shift-type" value="shift-no-rrx" />
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</docvars>
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<asmtemplate><text>ASR</text><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><c></a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><q></a><text>}</text><text> </text><text>{</text><a link="sa_rd_3" hover="General-purpose destination register (field "Rd")"><Rd></a><text>,</text><text>}</text><text> </text><a link="sa_rm_2" hover="General-purpose source register (field "Rm")"><Rm></a><text>, #</text><a link="sa_imm_1" hover="Shift amount [1-32] (field "imm5")"><imm></a></asmtemplate>
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<equivalent_to>
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<asmtemplate><a href="mov_r.xml#MOV_r_A1">MOV</a><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><c></a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><q></a><text>}</text><text> </text><a link="sa_rd_3" hover="General-purpose destination register (field "Rd")"><Rd></a><text>, </text><a link="sa_rm_2" hover="General-purpose source register (field "Rm")"><Rm></a><text>, ASR #</text><a link="sa_imm_1" hover="Shift amount [1-32] (field "imm5")"><imm></a></asmtemplate>
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<aliascond>Unconditionally</aliascond>
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</equivalent_to>
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</encoding>
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</iclass>
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<iclass name="T2" oneof="3" id="iclass_t2" no_encodings="1" isa="T32">
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<docvars>
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<docvar key="armarmheading" value="T2" />
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<docvar key="instr-class" value="general" />
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<docvar key="isa" value="T32" />
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<docvar key="mnemonic" value="MOV" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="16" psname="" tworows="1">
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<box hibit="31" width="3" settings="3">
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<c>0</c>
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<c>0</c>
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<c>0</c>
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</box>
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<box hibit="28" width="2" name="op" usename="1" settings="2">
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<c>1</c>
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<c>0</c>
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</box>
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<box hibit="26" width="5" name="imm5" usename="1">
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<c colspan="5"></c>
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</box>
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<box hibit="21" width="3" name="Rm" usename="1">
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<c colspan="3"></c>
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</box>
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<box hibit="18" width="3" name="Rd" usename="1">
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<c colspan="3"></c>
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</box>
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</regdiagram>
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<encoding name="ASR_MOV_r_T2" oneofinclass="1" oneof="3" label="T2">
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<docvars>
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<docvar key="alias_mnemonic" value="ASR" />
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<docvar key="armarmheading" value="T2" />
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<docvar key="instr-class" value="general" />
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<docvar key="isa" value="T32" />
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<docvar key="mnemonic" value="MOV" />
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</docvars>
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<asmtemplate comment="Inside IT block"><text>ASR</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><c></a><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><q></a><text>}</text><text> </text><text>{</text><a link="sa_rd_1" hover="General-purpose destination register (field "Rd")"><Rd></a><text>,</text><text>}</text><text> </text><a link="sa_rm_1" hover="General-purpose source register (field "Rm")"><Rm></a><text>, #</text><a link="sa_imm_1" hover="Shift amount [1-32] (field "imm5")"><imm></a></asmtemplate>
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<equivalent_to>
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<asmtemplate><a href="mov_r.xml#MOV_r_T2">MOV</a><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><c></a><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><q></a><text>}</text><text> </text><a link="sa_rd_1" hover="General-purpose destination register (field "Rd")"><Rd></a><text>, </text><a link="sa_rm_1" hover="General-purpose source register (field "Rm")"><Rm></a><text>, ASR #</text><a link="sa_imm_1" hover="Shift amount [1-32] (field "imm5")"><imm></a></asmtemplate>
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<aliascond><a link="impl-aarch32.InITBlock.0" file="shared_pseudocode.xml" hover="function: boolean InITBlock()">InITBlock</a>()</aliascond>
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</equivalent_to>
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</encoding>
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</iclass>
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<iclass name="T3" oneof="3" id="iclass_t3" no_encodings="1" isa="T32">
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<docvars>
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<docvar key="armarmheading" value="T3" />
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<docvar key="instr-class" value="general" />
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<docvar key="isa" value="T32" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="16x2" psname="" tworows="1">
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<box hibit="31" width="7" settings="7">
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<c>1</c>
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<c>1</c>
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<c>1</c>
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<c>0</c>
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<c>1</c>
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<c>0</c>
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<c>1</c>
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</box>
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<box hibit="24" width="4" name="op1" settings="4">
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<c>0</c>
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<c>0</c>
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<c>1</c>
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<c>0</c>
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</box>
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<box hibit="20" name="S" usename="1" settings="1">
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<c>0</c>
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</box>
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<box hibit="19" width="4" name="Rn" settings="4">
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<c>1</c>
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<c>1</c>
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<c>1</c>
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<c>1</c>
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</box>
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<box hibit="15" settings="1">
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<c>(0)</c>
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</box>
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<box hibit="14" width="3" name="imm3" usename="1">
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<c colspan="3"></c>
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</box>
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<box hibit="11" width="4" name="Rd" usename="1">
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<c colspan="4"></c>
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</box>
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<box hibit="7" width="2" name="imm2" usename="1">
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<c colspan="2"></c>
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</box>
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<box hibit="5" width="2" name="stype" usename="1" settings="2">
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<c>1</c>
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<c>0</c>
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</box>
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<box hibit="3" width="4" name="Rm" usename="1">
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<c colspan="4"></c>
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</box>
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</regdiagram>
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<encoding name="ASR_MOV_r_T3" oneofinclass="1" oneof="3" label="MOV, shift or rotate by value">
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<docvars>
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<docvar key="alias_mnemonic" value="ASR" />
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<docvar key="armarmheading" value="T3" />
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<docvar key="instr-class" value="general" />
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<docvar key="isa" value="T32" />
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<docvar key="mnemonic" value="MOV" />
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<docvar key="mnemonic-shift-type" value="MOV-shift-no-rrx" />
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<docvar key="shift-type" value="shift-no-rrx" />
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</docvars>
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<asmtemplate comment="Inside IT block, and <Rd>, <Rm>, <imm> can be represented in T2"><text>ASR</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><c></a><text>.W </text><text>{</text><a link="sa_rd_1" hover="General-purpose destination register (field "Rd")"><Rd></a><text>,</text><text>}</text><text> </text><a link="sa_rm_1" hover="General-purpose source register (field "Rm")"><Rm></a><text>, #</text><a link="sa_imm_2" hover="Shift amount [1-32] (field "imm3:imm2")"><imm></a></asmtemplate>
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<asmtemplate><text>ASR</text><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><c></a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><q></a><text>}</text><text> </text><text>{</text><a link="sa_rd_1" hover="General-purpose destination register (field "Rd")"><Rd></a><text>,</text><text>}</text><text> </text><a link="sa_rm_1" hover="General-purpose source register (field "Rm")"><Rm></a><text>, #</text><a link="sa_imm_2" hover="Shift amount [1-32] (field "imm3:imm2")"><imm></a></asmtemplate>
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<equivalent_to>
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<asmtemplate><a href="mov_r.xml#MOV_r_T3">MOV</a><text>{</text><a link="sa_c" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><c></a><text>}</text><text>{</text><a link="sa_q" hover="See {xref{ARMARM_Babbefhf}{Standard assembler syntax fields}}"><q></a><text>}</text><text> </text><a link="sa_rd_1" hover="General-purpose destination register (field "Rd")"><Rd></a><text>, </text><a link="sa_rm_1" hover="General-purpose source register (field "Rm")"><Rm></a><text>, ASR #</text><a link="sa_imm_2" hover="Shift amount [1-32] (field "imm3:imm2")"><imm></a></asmtemplate>
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<aliascond>Unconditionally</aliascond>
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</equivalent_to>
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</encoding>
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</iclass>
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</classes>
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<explanations scope="all">
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<explanation enclist="ASR_MOV_r_A1, ASR_MOV_r_T2, ASR_MOV_r_T3" symboldefcount="1">
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<symbol link="sa_c"><c></symbol>
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<account encodedin="">
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<intro>
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<para>See <xref linkend="Babbefhf">Standard assembler syntax fields</xref>.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="ASR_MOV_r_A1, ASR_MOV_r_T2, ASR_MOV_r_T3" symboldefcount="1">
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<symbol link="sa_q"><q></symbol>
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<account encodedin="">
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<intro>
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<para>See <xref linkend="Babbefhf">Standard assembler syntax fields</xref>.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="ASR_MOV_r_A1" symboldefcount="1">
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<symbol link="sa_rd_3"><Rd></symbol>
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<account encodedin="Rd">
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<docvars>
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<docvar key="armarmheading" value="A1" />
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<docvar key="shift-type" value="shift-no-rrx" />
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</docvars>
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<intro>
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<para>For encoding A1: is the general-purpose destination register, encoded in the "Rd" field. Arm deprecates using the PC as the destination register, but if the PC is used, the instruction is a branch to the address calculated by the operation. This is an interworking branch, see <xref linkend="BEICJFEH">Pseudocode description of operations on the AArch32 general-purpose registers and the PC</xref>.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="ASR_MOV_r_T2, ASR_MOV_r_T3" symboldefcount="2">
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<symbol link="sa_rd_1"><Rd></symbol>
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<account encodedin="Rd">
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<intro>
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<para>For encoding T2 and T3: is the general-purpose destination register, encoded in the "Rd" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="ASR_MOV_r_A1" symboldefcount="1">
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<symbol link="sa_rm_2"><Rm></symbol>
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<account encodedin="Rm">
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<docvars>
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<docvar key="armarmheading" value="A1" />
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<docvar key="shift-type" value="shift-no-rrx" />
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</docvars>
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<intro>
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<para>For encoding A1: is the general-purpose source register, encoded in the "Rm" field. The PC can be used, but this is deprecated.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="ASR_MOV_r_T2, ASR_MOV_r_T3" symboldefcount="2">
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<symbol link="sa_rm_1"><Rm></symbol>
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<account encodedin="Rm">
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<intro>
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<para>For encoding T2 and T3: is the general-purpose source register, encoded in the "Rm" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="ASR_MOV_r_A1, ASR_MOV_r_T2" symboldefcount="1">
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<symbol link="sa_imm_1"><imm></symbol>
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<account encodedin="imm5">
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<intro>
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<para>For encoding A1 and T2: is the shift amount, in the range 1 to 32, encoded in the "imm5" field as <imm> modulo 32.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="ASR_MOV_r_T3" symboldefcount="2">
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<symbol link="sa_imm_2"><imm></symbol>
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<account encodedin="imm3:imm2">
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<docvars>
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<docvar key="armarmheading" value="T3" />
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<docvar key="shift-type" value="shift-no-rrx" />
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</docvars>
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<intro>
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<para>For encoding T3: is the shift amount, in the range 1 to 32, encoded in the "imm3:imm2" field as <imm> modulo 32.</para>
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</intro>
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</account>
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</explanation>
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</explanations>
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</instructionsection>
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