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| <title>Using as: V850 Options</title> |
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| <a name="V850-Options"></a> |
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| Next: <a href="V850-Syntax.html#V850-Syntax" accesskey="n" rel="next">V850 Syntax</a>, Up: <a href="V850_002dDependent.html#V850_002dDependent" accesskey="u" rel="up">V850-Dependent</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p> |
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| <a name="Options-29"></a> |
| <h4 class="subsection">9.49.1 Options</h4> |
| <a name="index-V850-options-_0028none_0029"></a> |
| <a name="index-options-for-V850-_0028none_0029"></a> |
| <p><code>as</code> supports the following additional command-line options |
| for the V850 processor family: |
| </p> |
| <a name="index-command-line-options_002c-V850"></a> |
| <a name="index-V850-command-line-options"></a> |
| <dl compact="compact"> |
| <dd> |
| <a name="index-_002dwsigned_005foverflow-command-line-option_002c-V850"></a> |
| </dd> |
| <dt><code>-wsigned_overflow</code></dt> |
| <dd><p>Causes warnings to be produced when signed immediate values overflow the |
| space available for then within their opcodes. By default this option |
| is disabled as it is possible to receive spurious warnings due to using |
| exact bit patterns as immediate constants. |
| </p> |
| <a name="index-_002dwunsigned_005foverflow-command-line-option_002c-V850"></a> |
| </dd> |
| <dt><code>-wunsigned_overflow</code></dt> |
| <dd><p>Causes warnings to be produced when unsigned immediate values overflow |
| the space available for then within their opcodes. By default this |
| option is disabled as it is possible to receive spurious warnings due to |
| using exact bit patterns as immediate constants. |
| </p> |
| <a name="index-_002dmv850-command-line-option_002c-V850"></a> |
| </dd> |
| <dt><code>-mv850</code></dt> |
| <dd><p>Specifies that the assembled code should be marked as being targeted at |
| the V850 processor. This allows the linker to detect attempts to link |
| such code with code assembled for other processors. |
| </p> |
| <a name="index-_002dmv850e-command-line-option_002c-V850"></a> |
| </dd> |
| <dt><code>-mv850e</code></dt> |
| <dd><p>Specifies that the assembled code should be marked as being targeted at |
| the V850E processor. This allows the linker to detect attempts to link |
| such code with code assembled for other processors. |
| </p> |
| <a name="index-_002dmv850e1-command-line-option_002c-V850"></a> |
| </dd> |
| <dt><code>-mv850e1</code></dt> |
| <dd><p>Specifies that the assembled code should be marked as being targeted at |
| the V850E1 processor. This allows the linker to detect attempts to link |
| such code with code assembled for other processors. |
| </p> |
| <a name="index-_002dmv850any-command-line-option_002c-V850"></a> |
| </dd> |
| <dt><code>-mv850any</code></dt> |
| <dd><p>Specifies that the assembled code should be marked as being targeted at |
| the V850 processor but support instructions that are specific to the |
| extended variants of the process. This allows the production of |
| binaries that contain target specific code, but which are also intended |
| to be used in a generic fashion. For example libgcc.a contains generic |
| routines used by the code produced by GCC for all versions of the v850 |
| architecture, together with support routines only used by the V850E |
| architecture. |
| </p> |
| <a name="index-_002dmv850e2-command-line-option_002c-V850"></a> |
| </dd> |
| <dt><code>-mv850e2</code></dt> |
| <dd><p>Specifies that the assembled code should be marked as being targeted at |
| the V850E2 processor. This allows the linker to detect attempts to link |
| such code with code assembled for other processors. |
| </p> |
| <a name="index-_002dmv850e2v3-command-line-option_002c-V850"></a> |
| </dd> |
| <dt><code>-mv850e2v3</code></dt> |
| <dd><p>Specifies that the assembled code should be marked as being targeted at |
| the V850E2V3 processor. This allows the linker to detect attempts to link |
| such code with code assembled for other processors. |
| </p> |
| <a name="index-_002dmv850e2v4-command-line-option_002c-V850"></a> |
| </dd> |
| <dt><code>-mv850e2v4</code></dt> |
| <dd><p>This is an alias for <samp>-mv850e3v5</samp>. |
| </p> |
| <a name="index-_002dmv850e3v5-command-line-option_002c-V850"></a> |
| </dd> |
| <dt><code>-mv850e3v5</code></dt> |
| <dd><p>Specifies that the assembled code should be marked as being targeted at |
| the V850E3V5 processor. This allows the linker to detect attempts to link |
| such code with code assembled for other processors. |
| </p> |
| <a name="index-_002dmrelax-command-line-option_002c-V850"></a> |
| </dd> |
| <dt><code>-mrelax</code></dt> |
| <dd><p>Enables relaxation. This allows the .longcall and .longjump pseudo |
| ops to be used in the assembler source code. These ops label sections |
| of code which are either a long function call or a long branch. The |
| assembler will then flag these sections of code and the linker will |
| attempt to relax them. |
| </p> |
| <a name="index-_002dmgcc_002dabi-command-line-option_002c-V850"></a> |
| </dd> |
| <dt><code>-mgcc-abi</code></dt> |
| <dd><p>Marks the generated objecy file as supporting the old GCC ABI. |
| </p> |
| <a name="index-_002dmrh850_002dabi-command-line-option_002c-V850"></a> |
| </dd> |
| <dt><code>-mrh850-abi</code></dt> |
| <dd><p>Marks the generated objecy file as supporting the RH850 ABI. This is |
| the default. |
| </p> |
| <a name="index-_002dm8byte_002dalign-command-line-option_002c-V850"></a> |
| </dd> |
| <dt><code>-m8byte-align</code></dt> |
| <dd><p>Marks the generated objecy file as supporting a maximum 64-bits of |
| alignment for variables defined in the source code. |
| </p> |
| <a name="index-_002dm4byte_002dalign-command-line-option_002c-V850"></a> |
| </dd> |
| <dt><code>-m4byte-align</code></dt> |
| <dd><p>Marks the generated objecy file as supporting a maximum 32-bits of |
| alignment for variables defined in the source code. This is the |
| default. |
| </p> |
| </dd> |
| </dl> |
| |
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| Next: <a href="V850-Syntax.html#V850-Syntax" accesskey="n" rel="next">V850 Syntax</a>, Up: <a href="V850_002dDependent.html#V850_002dDependent" accesskey="u" rel="up">V850-Dependent</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p> |
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