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| <title>Encoding - ARM Machine Readable Schema - 2.7.1</title> |
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| <div class="col-md-6 pull-left"><h1>AARCHMRS Schema <small>2.7.1</small></h1></div> |
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| <h2> |
| <span class=" title-type">Encoding</span> |
| |
| <!-- if oneOf is set, then type is ignored --> |
| <span class="type">object</span> |
| </h2> |
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| <div class="static-markdown"><p>This object holds one encoding for a register. For example,</p> |
| <blockquote> |
| <p><code>REG0/opc1:0b000 opc2:0b001 CRn:0b0111 coproc:0b1111 CRm:0b1000</code></p> |
| </blockquote> |
| <p><em>This shows the string representation of an encoding</em>, where the ASM name is shown as <code>ATS1CPW</code>.</p> |
| <hr /> |
| <p>When used within index relative models such as <a href="RegisterArray_schema.html">RegisterArray</a>, the encoding could be represented as:</p> |
| <blockquote> |
| <p><code>REG<n>/opc1:0b000 opc2:0b001 CRn:0b0<n:4:2> coproc:0b11<n:1:0> CRm:0b1000</code></p> |
| </blockquote> |
| <p>Where the index value of <code>n</code> changes the canonical encoding value.</p> |
| <p>For example: if the value of <code>n</code> is <code>12</code> then the binary representation of |
| <code>12</code> will be <code>0b01100</code> making the value of <code>CRn</code> to be <code>0b0011</code> |
| (<code>011</code> is inserted as the bit value of <code>n[4:2]</code>) and <code>coproc</code> to be <code>0b1100</code> |
| (<code>00</code> is inserted as a the bit value of <code>n[1:0]</code>).</p></div> |
| </div> |
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| <div> |
| <!-- A simple object --> |
| <h3 class="type">object</h3> |
| |
| <table class="table table-hover properties"> |
| <thead> |
| <tr> |
| <th class="col-md-4">Properties</th> |
| <th class="col-md-4">Type</th> |
| <th class="col-md-4">Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| |
| <!-- properties --> |
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| |
| <tr id="/properties/_meta" class="property"> |
| <th class="col-md-4"> |
| <a href="#/properties/_meta">_meta</a> |
| </th> |
| <td class="col-md-4"> |
| <a href="Meta_schema.html" class="schema_link">Meta</a> |
| </td> |
| <td class="col-md-4"> |
| <div><p>Metadata.</p></div> |
| |
| <div> |
| See |
| <a href="Meta_schema.html" class="schema_link">Meta</a> |
| for more information. |
| </div> |
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| </td> |
| </tr> |
| |
| <tr id="/properties/_type" class="property"> |
| <th class="col-md-4"> |
| <a href="#/properties/_type">_type</a> |
| </th> |
| <td class="col-md-4"> |
| </td> |
| <td class="col-md-4"> |
| <dl> |
| <dt>Enum</dt> |
| <dd> |
| <code>Encoding</code> |
| </dd> |
| </dl> |
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| </td> |
| </tr> |
| |
| <tr id="/properties/asmvalue" class="property"> |
| <th class="col-md-4"> |
| <a href="#/properties/asmvalue">asmvalue</a> |
| </th> |
| <td class="col-md-4"> |
| <ul class="inline list-type"> |
| <li class="inline type">string</li> |
| <li class="inline type">null</li> |
| </ul> |
| </td> |
| <td class="col-md-4"> |
| <div><p>This is the aliased name for the encoding, For example for the <code>MRS</code> instruction this will be the value of <code><systemreg></code>.</p></div> |
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| </td> |
| </tr> |
| |
| <tr id="/properties/encodings" class="property"> |
| <th class="col-md-4"> |
| <a href="#/properties/encodings">encodings<sup>◊</sup></a> |
| </th> |
| <td class="col-md-4"> |
| <div> |
| <span class="type">object</span> { |
| <code title="Regex">/.*/</code> : |
| </div> |
| <div class="items-oneOf"> |
| <div><span class="type Xof">oneOf</span> [</div> |
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| <div class="items-oneOf"> |
| <a href="Values/Group_schema.html" class="schema_link">Values.Group</a> |
| </div> |
| <div class="items-oneOf"> |
| <a href="Values/Value_schema.html" class="schema_link">Values.Value</a> |
| </div> |
| <div class="items-oneOf"> |
| <a href="Values/EquationValue_schema.html" class="schema_link">Values.EquationValue</a> |
| </div> |
| |
| |
| <div>]</div> |
| </div> |
| <div>}</div> |
| </td> |
| <td class="col-md-4"> |
| <div><p>The encoding object is an object where the key is the encoding name (<code>opcode</code>) |
| and the value is one of the value objects.</p> |
| <pre><code>{ |
| "_type": "Encoding", |
| "encoding": { |
| "CRn": { |
| "_type": "Value", |
| "value": "'0111'", |
| "meaning": "The CRn value", |
| } |
| } |
| </code></pre></div> |
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| </td> |
| </tr> |
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| |
| <!-- patternProperties --> |
| |
| <!-- object property attributes --> |
| <tr> |
| <td colspan="3"> |
| <dl> |
| <dt>Additional Properties</dt> |
| <dd>Not Allowed</dd> |
| </dl> |
| </td> |
| </tr> |
| |
| <tr> |
| <td colspan="3"> |
| <dl> |
| <dt>◊ Required</dt> |
| <dd>Properties marked with ◊ are required properties.</dd> |
| </dl> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
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| <!-- array, and it has described items --> |
| </div> |
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| </div> |
| |
| <div class="row schema"> |
| <h3>Schema <small><a href="http://json-schema.org/draft-04/schema#">http://json-schema.org/draft-04/schema#</a></small></h3> |
| <pre class="schema-json"><code class="language-json">{ |
| "info": [ |
| "This object holds one encoding for a register. For example,", |
| "> `REG0/opc1:0b000 opc2:0b001 CRn:0b0111 coproc:0b1111 CRm:0b1000`", |
| "_This shows the string representation of an encoding_, where the ASM name is shown as `ATS1CPW`.", |
| "----", |
| "When used within index relative models such as [RegisterArray](RegisterArray_schema.html), the encoding could be represented as:", |
| "> `REG<n>/opc1:0b000 opc2:0b001 CRn:0b0<n:4:2> coproc:0b11<n:1:0> CRm:0b1000`", |
| "Where the index value of `n` changes the canonical encoding value.", |
| [ |
| "For example: if the value of `n` is `12` then the binary representation of", |
| "`12` will be `0b01100` making the value of `CRn` to be `0b0011`", |
| "(`011` is inserted as the bit value of `n[4:2]`) and `coproc` to be `0b1100`", |
| "(`00` is inserted as a the bit value of `n[1:0]`)." |
| ] |
| ], |
| "properties": { |
| "_meta": { |
| "$ref": "Meta.json", |
| "info": [ |
| "Metadata." |
| ] |
| }, |
| "_type": { |
| "enum": [ |
| "Encoding" |
| ] |
| }, |
| "asmvalue": { |
| "type": [ |
| "string", |
| "null" |
| ], |
| "info": [ |
| "This is the aliased name for the encoding, For example for the `MRS` instruction this will be the value of `<systemreg>`." |
| ] |
| }, |
| "encodings": { |
| "patternProperties": { |
| ".*": { |
| "oneOf": [ |
| { |
| "$ref": "Values/Group.json" |
| }, |
| { |
| "$ref": "Values/Value.json" |
| }, |
| { |
| "$ref": "Values/EquationValue.json" |
| } |
| ], |
| "type": "object" |
| } |
| }, |
| "type": "object", |
| "info": [ |
| [ |
| "The encoding object is an object where the key is the encoding name (`opcode`)", |
| "and the value is one of the value objects." |
| ], |
| [ |
| "```", |
| "{", |
| " \"_type\": \"Encoding\",", |
| " \"encoding\": {", |
| " \"CRn\": {", |
| " \"_type\": \"Value\",", |
| " \"value\": \"'0111'\",", |
| " \"meaning\": \"The CRn value\",", |
| " }", |
| "}", |
| "```" |
| ] |
| ] |
| } |
| }, |
| "title": "Encoding", |
| "required": [ |
| "encodings" |
| ], |
| "type": "object", |
| "$schema": "http://json-schema.org/draft-04/schema#", |
| "additionalProperties": false |
| }</code></pre> |
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