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| <h4 class="subsection">3.17.23 MCore Options</h4> |
| |
| <p><a name="index-MCore-options-1509"></a> |
| These are the ‘<samp><span class="samp">-m</span></samp>’ options defined for the Motorola M*Core |
| processors. |
| |
| <dl> |
| <dt><code>-mhardlit</code><dt><code>-mno-hardlit</code><dd><a name="index-mhardlit-1510"></a><a name="index-mno_002dhardlit-1511"></a>Inline constants into the code stream if it can be done in two |
| instructions or less. |
| |
| <br><dt><code>-mdiv</code><dt><code>-mno-div</code><dd><a name="index-mdiv-1512"></a><a name="index-mno_002ddiv-1513"></a>Use the divide instruction. (Enabled by default). |
| |
| <br><dt><code>-mrelax-immediate</code><dt><code>-mno-relax-immediate</code><dd><a name="index-mrelax_002dimmediate-1514"></a><a name="index-mno_002drelax_002dimmediate-1515"></a>Allow arbitrary sized immediates in bit operations. |
| |
| <br><dt><code>-mwide-bitfields</code><dt><code>-mno-wide-bitfields</code><dd><a name="index-mwide_002dbitfields-1516"></a><a name="index-mno_002dwide_002dbitfields-1517"></a>Always treat bit-fields as int-sized. |
| |
| <br><dt><code>-m4byte-functions</code><dt><code>-mno-4byte-functions</code><dd><a name="index-m4byte_002dfunctions-1518"></a><a name="index-mno_002d4byte_002dfunctions-1519"></a>Force all functions to be aligned to a four byte boundary. |
| |
| <br><dt><code>-mcallgraph-data</code><dt><code>-mno-callgraph-data</code><dd><a name="index-mcallgraph_002ddata-1520"></a><a name="index-mno_002dcallgraph_002ddata-1521"></a>Emit callgraph information. |
| |
| <br><dt><code>-mslow-bytes</code><dt><code>-mno-slow-bytes</code><dd><a name="index-mslow_002dbytes-1522"></a><a name="index-mno_002dslow_002dbytes-1523"></a>Prefer word access when reading byte quantities. |
| |
| <br><dt><code>-mlittle-endian</code><dt><code>-mbig-endian</code><dd><a name="index-mlittle_002dendian-1524"></a><a name="index-mbig_002dendian-1525"></a>Generate code for a little endian target. |
| |
| <br><dt><code>-m210</code><dt><code>-m340</code><dd><a name="index-m210-1526"></a><a name="index-m340-1527"></a>Generate code for the 210 processor. |
| |
| <br><dt><code>-mno-lsim</code><dd><a name="index-mno_002dlsim-1528"></a>Assume that run-time support has been provided and so omit the |
| simulator library (<samp><span class="file">libsim.a)</span></samp> from the linker command line. |
| |
| <br><dt><code>-mstack-increment=</code><var>size</var><dd><a name="index-mstack_002dincrement-1529"></a>Set the maximum amount for a single stack increment operation. Large |
| values can increase the speed of programs which contain functions |
| that need a large amount of stack space, but they can also trigger a |
| segmentation fault if the stack is extended too much. The default |
| value is 0x1000. |
| |
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