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| Next: <a href="ARC-Built_002din-Functions.html#ARC-Built_002din-Functions" accesskey="n" rel="next">ARC Built-in Functions</a>, Previous: <a href="Alpha-Built_002din-Functions.html#Alpha-Built_002din-Functions" accesskey="p" rel="prev">Alpha Built-in Functions</a>, Up: <a href="Target-Builtins.html#Target-Builtins" accesskey="u" rel="up">Target Builtins</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p> |
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| <a name="Altera-Nios-II-Built_002din-Functions-1"></a> |
| <h4 class="subsection">6.57.3 Altera Nios II Built-in Functions</h4> |
| |
| <p>These built-in functions are available for the Altera Nios II |
| family of processors. |
| </p> |
| <p>The following built-in functions are always available. They |
| all generate the machine instruction that is part of the name. |
| </p> |
| <div class="example"> |
| <pre class="example">int __builtin_ldbio (volatile const void *) |
| int __builtin_ldbuio (volatile const void *) |
| int __builtin_ldhio (volatile const void *) |
| int __builtin_ldhuio (volatile const void *) |
| int __builtin_ldwio (volatile const void *) |
| void __builtin_stbio (volatile void *, int) |
| void __builtin_sthio (volatile void *, int) |
| void __builtin_stwio (volatile void *, int) |
| void __builtin_sync (void) |
| int __builtin_rdctl (int) |
| void __builtin_wrctl (int, int) |
| </pre></div> |
| |
| <p>The following built-in functions are always available. They |
| all generate a Nios II Custom Instruction. The name of the |
| function represents the types that the function takes and |
| returns. The letter before the <code>n</code> is the return type |
| or void if absent. The <code>n</code> represents the first parameter |
| to all the custom instructions, the custom instruction number. |
| The two letters after the <code>n</code> represent the up to two |
| parameters to the function. |
| </p> |
| <p>The letters represent the following data types: |
| </p><dl compact="compact"> |
| <dt><code><no letter></code></dt> |
| <dd><p><code>void</code> for return type and no parameter for parameter types. |
| </p> |
| </dd> |
| <dt><code>i</code></dt> |
| <dd><p><code>int</code> for return type and parameter type |
| </p> |
| </dd> |
| <dt><code>f</code></dt> |
| <dd><p><code>float</code> for return type and parameter type |
| </p> |
| </dd> |
| <dt><code>p</code></dt> |
| <dd><p><code>void *</code> for return type and parameter type |
| </p> |
| </dd> |
| </dl> |
| |
| <p>And the function names are: |
| </p><div class="example"> |
| <pre class="example">void __builtin_custom_n (void) |
| void __builtin_custom_ni (int) |
| void __builtin_custom_nf (float) |
| void __builtin_custom_np (void *) |
| void __builtin_custom_nii (int, int) |
| void __builtin_custom_nif (int, float) |
| void __builtin_custom_nip (int, void *) |
| void __builtin_custom_nfi (float, int) |
| void __builtin_custom_nff (float, float) |
| void __builtin_custom_nfp (float, void *) |
| void __builtin_custom_npi (void *, int) |
| void __builtin_custom_npf (void *, float) |
| void __builtin_custom_npp (void *, void *) |
| int __builtin_custom_in (void) |
| int __builtin_custom_ini (int) |
| int __builtin_custom_inf (float) |
| int __builtin_custom_inp (void *) |
| int __builtin_custom_inii (int, int) |
| int __builtin_custom_inif (int, float) |
| int __builtin_custom_inip (int, void *) |
| int __builtin_custom_infi (float, int) |
| int __builtin_custom_inff (float, float) |
| int __builtin_custom_infp (float, void *) |
| int __builtin_custom_inpi (void *, int) |
| int __builtin_custom_inpf (void *, float) |
| int __builtin_custom_inpp (void *, void *) |
| float __builtin_custom_fn (void) |
| float __builtin_custom_fni (int) |
| float __builtin_custom_fnf (float) |
| float __builtin_custom_fnp (void *) |
| float __builtin_custom_fnii (int, int) |
| float __builtin_custom_fnif (int, float) |
| float __builtin_custom_fnip (int, void *) |
| float __builtin_custom_fnfi (float, int) |
| float __builtin_custom_fnff (float, float) |
| float __builtin_custom_fnfp (float, void *) |
| float __builtin_custom_fnpi (void *, int) |
| float __builtin_custom_fnpf (void *, float) |
| float __builtin_custom_fnpp (void *, void *) |
| void * __builtin_custom_pn (void) |
| void * __builtin_custom_pni (int) |
| void * __builtin_custom_pnf (float) |
| void * __builtin_custom_pnp (void *) |
| void * __builtin_custom_pnii (int, int) |
| void * __builtin_custom_pnif (int, float) |
| void * __builtin_custom_pnip (int, void *) |
| void * __builtin_custom_pnfi (float, int) |
| void * __builtin_custom_pnff (float, float) |
| void * __builtin_custom_pnfp (float, void *) |
| void * __builtin_custom_pnpi (void *, int) |
| void * __builtin_custom_pnpf (void *, float) |
| void * __builtin_custom_pnpp (void *, void *) |
| </pre></div> |
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| Next: <a href="ARC-Built_002din-Functions.html#ARC-Built_002din-Functions" accesskey="n" rel="next">ARC Built-in Functions</a>, Previous: <a href="Alpha-Built_002din-Functions.html#Alpha-Built_002din-Functions" accesskey="p" rel="prev">Alpha Built-in Functions</a>, Up: <a href="Target-Builtins.html#Target-Builtins" accesskey="u" rel="up">Target Builtins</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p> |
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