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| <title>fill-array-data</title> |
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| <h1>fill-array-data</h1> |
| |
| <h2>Purpose</h2> |
| |
| <p> |
| Fill the given array with the indicated data. The reference must be to an array |
| of primitives, and the data table must match it in type and size. |
| </p> |
| <p> |
| Note: The address of the table is guaranteed to be even (that is, 4-byte |
| aligned). If the code size of the method is otherwise odd, then an extra code |
| unit is inserted between the main code and the table whose value is the same as |
| a nop. |
| </p> |
| |
| <h2>Details</h2> |
| |
| <table class="instruc"> |
| <thead> |
| <tr> |
| <th>Op & Format</th> |
| <th>Mnemonic / Syntax</th> |
| <th>Arguments</th> |
| </tr> |
| </thead> |
| <tbody> |
| <td>26 31t</td> |
| <td>fill-array-data vAA, +BBBBBBBB <i>(with supplemental data as specified |
| below in "<code>fill-array-data</code> Format")</i></td> |
| <td><code>A:</code> array reference (8 bits)<br/> |
| <code>B:</code> signed "branch" offset to table data (32 bits)</td> |
| </td> |
| </tbody> |
| </table> |
| |
| <h2>Constraints</h2> |
| |
| <ul> |
| <li> |
| A must be a valid register index in the current stack frame. |
| </li> |
| <li> |
| vA must be a reference-bearing register (according to data flow) and contain |
| an array-reference. |
| </li> |
| <li> |
| B must be branch offset in the same method. |
| </li> |
| <li> |
| The target address (PC+B) must be 4-byte aligned. |
| </li> |
| <li> |
| The target address must hold the pseudo-opcode 0x300. |
| </li> |
| <li> |
| The table entry size must match the size of the data type of the array. |
| </li> |
| <li> |
| The table size must be equal or smaller than the array length. |
| </li> |
| </ul> |
| |
| <h2>Behavior</h2> |
| |
| <ul> |
| <li> |
| The contents of the array referenced by vA are filled with the table data, |
| starting from array index 0 and in the given order. |
| </li> |
| <li> |
| If there are less elements in the table than the array provides space for, |
| the remaining array elements stay untouched. |
| </li> |
| </ul> |
| |
| <h2>Exceptions</h2> |
| |
| <ul> |
| <li> |
| NullPointerException if vA is null. |
| </li> |
| </ul> |
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