mirror of
https://github.com/pound-emu/ballistic.git
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152 lines
9.3 KiB
XML
152 lines
9.3 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="st1d_z_p_ai" title="ST1D (vector plus immediate)" type="instruction">
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<docvars>
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<docvar key="instr-class" value="sve" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="ST1D" />
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</docvars>
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<heading>ST1D (vector plus immediate)</heading>
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<desc>
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<brief>Scatter store doublewords from a vector (immediate index)</brief>
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<description>
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<para>Scatter store of doublewords from the active elements of a vector register to the memory addresses generated by a vector base plus immediate index. The index is a multiple of 8 in the range 0 to 248. Inactive elements are not written to memory.</para>
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<para>This instruction is illegal when executed in Streaming SVE mode, unless FEAT_SME_FA64 is implemented and enabled.</para>
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</description>
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<status>Green</status>
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<predicated>True</predicated>
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<sm_policy>SM_0_only</sm_policy>
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</desc>
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<alias_list howmany="0"></alias_list>
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<classes>
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<iclass name="SVE" oneof="1" id="iclass_sve" no_encodings="1" isa="A64">
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<docvars>
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<docvar key="instr-class" value="sve" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="ST1D" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="32" psname="ST1D-Z.P.AI-D" 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>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="24" name="msz<1>" usename="1" settings="1">
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<c>1</c>
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</box>
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<box hibit="23" name="msz<0>" usename="1" settings="1">
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<c>1</c>
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</box>
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<box hibit="22" width="2" 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="20" 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="15" width="3" settings="3">
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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="12" width="3" name="Pg" usename="1">
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<c colspan="3"></c>
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</box>
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<box hibit="9" width="5" name="Zn" usename="1">
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<c colspan="5"></c>
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</box>
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<box hibit="4" width="5" name="Zt" usename="1">
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<c colspan="5"></c>
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</box>
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</regdiagram>
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<encoding name="st1d_z_p_ai_d" oneofinclass="1" oneof="1" label="">
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<docvars>
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<docvar key="instr-class" value="sve" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="ST1D" />
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</docvars>
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<asmtemplate><text>ST1D </text><text>{</text><text> </text><a link="sa_zt" hover="Scalable vector register to be transferred (field "Zt")"><Zt></a><text>.D </text><text>}</text><text>, </text><a link="sa_pg" hover="Governing scalable predicate register P0-P7 (field "Pg")"><Pg></a><text>, [</text><a link="sa_zn" hover="Base scalable vector register (field "Zn")"><Zn></a><text>.D</text><text>{</text><text>, #</text><a link="sa_imm" hover="Optional unsigned immediate byte offset, multiple of 8 [0-248], default 0 (field "imm5")"><imm></a><text>}</text><text>]</text></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="ST1D-Z.P.AI-D" mylink="ST1D-Z.P.AI-D" enclabels="" sections="1" secttype="noheading">
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<pstext mayhavelinks="1" section="Decode" rep_section="decode">if !<a link="impl-aarch64.HaveSVE.0" file="shared_pseudocode.xml" hover="function: boolean HaveSVE()">HaveSVE</a>() then UNDEFINED;
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integer t = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zt);
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integer n = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zn);
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integer g = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Pg);
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constant integer esize = 64;
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constant integer msize = 64;
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integer offset = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(imm5);</pstext>
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</ps>
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</ps_section>
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</iclass>
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</classes>
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<explanations scope="all">
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<explanation enclist="st1d_z_p_ai_d" symboldefcount="1">
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<symbol link="sa_zt"><Zt></symbol>
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<account encodedin="Zt">
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<intro>
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<para>Is the name of the scalable vector register to be transferred, encoded in the "Zt" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="st1d_z_p_ai_d" symboldefcount="1">
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<symbol link="sa_pg"><Pg></symbol>
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<account encodedin="Pg">
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<intro>
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<para>Is the name of the governing scalable predicate register P0-P7, encoded in the "Pg" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="st1d_z_p_ai_d" symboldefcount="1">
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<symbol link="sa_zn"><Zn></symbol>
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<account encodedin="Zn">
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<intro>
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<para>Is the name of the base scalable vector register, encoded in the "Zn" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="st1d_z_p_ai_d" symboldefcount="1">
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<symbol link="sa_imm"><imm></symbol>
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<account encodedin="imm5">
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<intro>
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<para>Is the optional unsigned immediate byte offset, a multiple of 8 in the range 0 to 248, defaulting to 0, encoded in the "imm5" field.</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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<ps_section howmany="1">
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<ps name="ST1D-Z.P.AI-D" mylink="execute" enclabels="" sections="1" secttype="Operation">
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<pstext mayhavelinks="1" section="Execute" rep_section="execute"><a link="impl-aarch64.CheckNonStreamingSVEEnabled.0" file="shared_pseudocode.xml" hover="function: CheckNonStreamingSVEEnabled()">CheckNonStreamingSVEEnabled</a>();
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constant integer VL = <a link="impl-aarch64.CurrentVL.read.none" file="shared_pseudocode.xml" hover="accessor: integer CurrentVL">CurrentVL</a>;
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constant integer PL = VL DIV 8;
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constant integer elements = VL DIV esize;
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bits(PL) mask = <a link="impl-aarch64.P.read.2" file="shared_pseudocode.xml" hover="accessor: bits(width) P[integer n, integer width]">P</a>[g, PL];
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bits(VL) base;
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bits(VL) src;
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constant integer mbytes = msize DIV 8;
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boolean contiguous = FALSE;
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boolean nontemporal = FALSE;
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boolean tagchecked = TRUE;
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<a link="AccessDescriptor" file="shared_pseudocode.xml" hover="type AccessDescriptor is ( AccessType acctype, bits(2) el, SecurityState ss, boolean acqsc, boolean acqpc, boolean relsc, boolean limitedordered, boolean exclusive, boolean atomicop, MemAtomicOp modop, boolean nontemporal, boolean read, boolean write, CacheOp cacheop, CacheOpScope opscope, CacheType cachetype, boolean pan, boolean transactional, boolean nonfault, boolean firstfault, boolean first, boolean contiguous, boolean streamingsve, boolean ls64, boolean mops, boolean rcw, boolean rcws, boolean toplevel, VARange varange, boolean a32lsmd, boolean tagchecked, boolean tagaccess, MPAMinfo mpam )">AccessDescriptor</a> accdesc = <a link="impl-shared.CreateAccDescSVE.4" file="shared_pseudocode.xml" hover="function: AccessDescriptor CreateAccDescSVE(MemOp memop, boolean nontemporal, boolean contiguous, boolean tagchecked)">CreateAccDescSVE</a>(<a link="MemOp_STORE" file="shared_pseudocode.xml" hover="enumeration MemOp {MemOp_LOAD, MemOp_STORE, MemOp_PREFETCH}">MemOp_STORE</a>, nontemporal, contiguous, tagchecked);
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if <a link="impl-aarch64.AnyActiveElement.2" file="shared_pseudocode.xml" hover="function: boolean AnyActiveElement(bits(N) mask, integer esize)">AnyActiveElement</a>(mask, esize) then
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base = <a link="impl-aarch64.Z.read.2" file="shared_pseudocode.xml" hover="accessor: bits(width) Z[integer n, integer width]">Z</a>[n, VL];
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src = <a link="impl-aarch64.Z.read.2" file="shared_pseudocode.xml" hover="accessor: bits(width) Z[integer n, integer width]">Z</a>[t, VL];
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for e = 0 to elements-1
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if <a link="impl-aarch64.ActivePredicateElement.3" file="shared_pseudocode.xml" hover="function: boolean ActivePredicateElement(bits(N) pred, integer e, integer esize)">ActivePredicateElement</a>(mask, e, esize) then
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bits(64) addr = <a link="impl-shared.ZeroExtend.2" file="shared_pseudocode.xml" hover="function: bits(N) ZeroExtend(bits(M) x, integer N)">ZeroExtend</a>(<a link="impl-shared.Elem.read.3" file="shared_pseudocode.xml" hover="accessor: bits(size) Elem[bits(N) vector, integer e, integer size]">Elem</a>[base, e, esize], 64) + offset * mbytes;
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Mem[addr, mbytes, accdesc] = <a link="impl-shared.Elem.read.3" file="shared_pseudocode.xml" hover="accessor: bits(size) Elem[bits(N) vector, integer e, integer size]">Elem</a>[src, e, esize]<msize-1:0>;</pstext>
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</ps>
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</ps_section>
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</instructionsection>
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