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| <h4 class="subsection">6.59.2 M32C Pragmas</h4> |
| |
| <dl compact="compact"> |
| <dt><code>GCC memregs <var>number</var></code></dt> |
| <dd><a name="index-pragma_002c-memregs"></a> |
| <p>Overrides the command-line option <code>-memregs=</code> for the current |
| file. Use with care! This pragma must be before any function in the |
| file, and mixing different memregs values in different objects may |
| make them incompatible. This pragma is useful when a |
| performance-critical function uses a memreg for temporary values, |
| as it may allow you to reduce the number of memregs used. |
| </p> |
| </dd> |
| <dt><code>ADDRESS <var>name</var> <var>address</var></code></dt> |
| <dd><a name="index-pragma_002c-address"></a> |
| <p>For any declared symbols matching <var>name</var>, this does three things |
| to that symbol: it forces the symbol to be located at the given |
| address (a number), it forces the symbol to be volatile, and it |
| changes the symbol’s scope to be static. This pragma exists for |
| compatibility with other compilers, but note that the common |
| <code>1234H</code> numeric syntax is not supported (use <code>0x1234</code> |
| instead). Example: |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">#pragma ADDRESS port3 0x103 |
| char port3; |
| </pre></div> |
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