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| <title>Debugging with GDB: MIPS Features</title> |
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| <a name="MIPS-Features-1"></a> |
| <h4 class="subsection">G.4.5 <acronym>MIPS</acronym> Features</h4> |
| <a name="index-target-descriptions_002c-MIPS-features"></a> |
| |
| <p>The ‘<samp>org.gnu.gdb.mips.cpu</samp>’ feature is required for <acronym>MIPS</acronym> targets. |
| It should contain registers ‘<samp>r0</samp>’ through ‘<samp>r31</samp>’, ‘<samp>lo</samp>’, |
| ‘<samp>hi</samp>’, and ‘<samp>pc</samp>’. They may be 32-bit or 64-bit depending |
| on the target. |
| </p> |
| <p>The ‘<samp>org.gnu.gdb.mips.cp0</samp>’ feature is also required. It should |
| contain at least the ‘<samp>status</samp>’, ‘<samp>badvaddr</samp>’, and ‘<samp>cause</samp>’ |
| registers. They may be 32-bit or 64-bit depending on the target. |
| </p> |
| <p>The ‘<samp>org.gnu.gdb.mips.fpu</samp>’ feature is currently required, though |
| it may be optional in a future version of <small>GDB</small>. It should |
| contain registers ‘<samp>f0</samp>’ through ‘<samp>f31</samp>’, ‘<samp>fcsr</samp>’, and |
| ‘<samp>fir</samp>’. They may be 32-bit or 64-bit depending on the target. |
| </p> |
| <p>The ‘<samp>org.gnu.gdb.mips.dsp</samp>’ feature is optional. It should |
| contain registers ‘<samp>hi1</samp>’ through ‘<samp>hi3</samp>’, ‘<samp>lo1</samp>’ through |
| ‘<samp>lo3</samp>’, and ‘<samp>dspctl</samp>’. The ‘<samp>dspctl</samp>’ register should |
| be 32-bit and the rest may be 32-bit or 64-bit depending on the target. |
| </p> |
| <p>The ‘<samp>org.gnu.gdb.mips.linux</samp>’ feature is optional. It should |
| contain a single register, ‘<samp>restart</samp>’, which is used by the |
| Linux kernel to control restartable syscalls. |
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