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- <a name="ARM-Features"></a>
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- Next: <a href="i386-Features.html#i386-Features" accesskey="n" rel="next">i386 Features</a>, Previous: <a href="ARC-Features.html#ARC-Features" accesskey="p" rel="prev">ARC 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.5.3 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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