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| Next: <a href="i386-Features.html#i386-Features" accesskey="n" rel="next">i386 Features</a>, Previous: <a href="AArch64-Features.html#AArch64-Features" accesskey="p" rel="prev">AArch64 Features</a>, Up: <a href="Standard-Target-Features.html#Standard-Target-Features" accesskey="u" rel="up">Standard Target Features</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> |
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| <a name="ARM-Features-1"></a> |
| <h4 class="subsection">G.4.2 ARM Features</h4> |
| <a name="index-target-descriptions_002c-ARM-features"></a> |
| |
| <p>The ‘<samp>org.gnu.gdb.arm.core</samp>’ feature is required for non-M-profile |
| ARM targets. |
| It should contain registers ‘<samp>r0</samp>’ through ‘<samp>r13</samp>’, ‘<samp>sp</samp>’, |
| ‘<samp>lr</samp>’, ‘<samp>pc</samp>’, and ‘<samp>cpsr</samp>’. |
| </p> |
| <p>For M-profile targets (e.g. Cortex-M3), the ‘<samp>org.gnu.gdb.arm.core</samp>’ |
| feature is replaced by ‘<samp>org.gnu.gdb.arm.m-profile</samp>’. It should contain |
| registers ‘<samp>r0</samp>’ through ‘<samp>r13</samp>’, ‘<samp>sp</samp>’, ‘<samp>lr</samp>’, ‘<samp>pc</samp>’, |
| and ‘<samp>xpsr</samp>’. |
| </p> |
| <p>The ‘<samp>org.gnu.gdb.arm.fpa</samp>’ feature is optional. If present, it |
| should contain registers ‘<samp>f0</samp>’ through ‘<samp>f7</samp>’ and ‘<samp>fps</samp>’. |
| </p> |
| <p>The ‘<samp>org.gnu.gdb.xscale.iwmmxt</samp>’ feature is optional. If present, |
| it should contain at least registers ‘<samp>wR0</samp>’ through ‘<samp>wR15</samp>’ and |
| ‘<samp>wCGR0</samp>’ through ‘<samp>wCGR3</samp>’. The ‘<samp>wCID</samp>’, ‘<samp>wCon</samp>’, |
| ‘<samp>wCSSF</samp>’, and ‘<samp>wCASF</samp>’ registers are optional. |
| </p> |
| <p>The ‘<samp>org.gnu.gdb.arm.vfp</samp>’ feature is optional. If present, it |
| should contain at least registers ‘<samp>d0</samp>’ through ‘<samp>d15</samp>’. If |
| they are present, ‘<samp>d16</samp>’ through ‘<samp>d31</samp>’ should also be included. |
| <small>GDB</small> will synthesize the single-precision registers from |
| halves of the double-precision registers. |
| </p> |
| <p>The ‘<samp>org.gnu.gdb.arm.neon</samp>’ feature is optional. It does not |
| need to contain registers; it instructs <small>GDB</small> to display the |
| VFP double-precision registers as vectors and to synthesize the |
| quad-precision registers from pairs of double-precision registers. |
| If this feature is present, ‘<samp>org.gnu.gdb.arm.vfp</samp>’ must also |
| be present and include 32 double-precision registers. |
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