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| <head> |
| <title>move-exception</title> |
| <link rel=stylesheet href="opcode.css"> |
| </head> |
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| <body> |
| |
| <h1>move-exception</h1> |
| |
| <h2>Purpose</h2> |
| |
| <p> |
| Save a just-caught exception into the given register. This should be the first |
| instruction of any exception handler whose caught exception is not to be |
| ignored, and this instruction may only ever occur as the first instruction of an |
| exception handler; anywhere else is invalid. |
| </p> |
| |
| <h2>Details</h2> |
| |
| <table class="instruc"> |
| <thead> |
| <tr> |
| <th>Op & Format</th> |
| <th>Mnemonic / Syntax</th> |
| <th>Arguments</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td>0d 11x</td> |
| <td>move-exception vAA</td> |
| <td><code>A:</code> destination register (8 bits)</td> |
| </tr> |
| </tbody> |
| </table> |
| |
| <h2>Constraints</h2> |
| |
| <ul> |
| <li> |
| A must be a valid register index in the current stack frame. |
| </li> |
| <li> |
| The instruction must be the first instruction (in the code array) of an |
| instruction handler, that is, its offset in the code array must match one of |
| the handlers defined for the method in the Dex file. |
| </li> |
| </ul> |
| |
| <h2>Behavior</h2> |
| |
| <ul> |
| <li> |
| The active exception of the current thread is moved to register vA, that is, |
| vA' = exception. |
| </li> |
| <li> |
| If register v(A-1) is the lower half of a register pair, register v(A-1)' |
| becomes undefined. |
| </li> |
| <li> |
| If register v(A+1) is the upper half of a register pair, register v(A+1)' |
| becomes undefined. |
| </li> |
| </ul> |
| |
| <h2>Exceptions</h2> |
| |
| <p> |
| None. |
| </p> |
| |
| </body> |
| </html> |
