110 lines
5.1 KiB
HTML
110 lines
5.1 KiB
HTML
|
<html lang="en">
|
||
|
|
<head>
|
||
|
|
<title>s390 Options - Using as</title>
|
||
|
|
<meta http-equiv="Content-Type" content="text/html">
|
||
|
|
<meta name="description" content="Using as">
|
||
|
|
<meta name="generator" content="makeinfo 4.13">
|
||
|
|
<link title="Top" rel="start" href="index.html#Top">
|
||
|
|
<link rel="up" href="S_002f390_002dDependent.html#S_002f390_002dDependent" title="S/390-Dependent">
|
||
|
|
<link rel="next" href="s390-Characters.html#s390-Characters" title="s390 Characters">
|
||
|
|
<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
|
||
|
|
<!--
|
||
|
|
This file documents the GNU Assembler "as".
|
||
|
|
|
||
|
|
Copyright (C) 1991-2019 Free Software Foundation, Inc.
|
||
|
|
|
||
|
|
Permission is granted to copy, distribute and/or modify this document
|
||
|
|
under the terms of the GNU Free Documentation License, Version 1.3
|
||
|
|
or any later version published by the Free Software Foundation;
|
||
|
|
with no Invariant Sections, with no Front-Cover Texts, and with no
|
||
|
|
Back-Cover Texts. A copy of the license is included in the
|
||
|
|
section entitled ``GNU Free Documentation License''.
|
||
|
|
|
||
|
|
-->
|
||
|
|
<meta http-equiv="Content-Style-Type" content="text/css">
|
||
|
|
<style type="text/css"><!--
|
||
|
|
pre.display { font-family:inherit }
|
||
|
|
pre.format { font-family:inherit }
|
||
|
|
pre.smalldisplay { font-family:inherit; font-size:smaller }
|
||
|
|
pre.smallformat { font-family:inherit; font-size:smaller }
|
||
|
|
pre.smallexample { font-size:smaller }
|
||
|
|
pre.smalllisp { font-size:smaller }
|
||
|
|
span.sc { font-variant:small-caps }
|
||
|
|
span.roman { font-family:serif; font-weight:normal; }
|
||
|
|
span.sansserif { font-family:sans-serif; font-weight:normal; }
|
||
|
|
--></style>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
<div class="node">
|
||
|
|
<a name="s390-Options"></a>
|
||
|
|
<p>
|
||
|
|
Next: <a rel="next" accesskey="n" href="s390-Characters.html#s390-Characters">s390 Characters</a>,
|
||
|
|
Up: <a rel="up" accesskey="u" href="S_002f390_002dDependent.html#S_002f390_002dDependent">S/390-Dependent</a>
|
||
|
|
<hr>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<h4 class="subsection">9.41.1 Options</h4>
|
||
|
|
|
||
|
|
<p><a name="index-options-for-s390-2051"></a><a name="index-s390-options-2052"></a>
|
||
|
|
The following table lists all available s390 specific options:
|
||
|
|
|
||
|
|
|
||
|
|
<a name="index-g_t_0040samp_007b_002dm31_007d-option_002c-s390-2053"></a>
|
||
|
|
<a name="index-g_t_0040samp_007b_002dm64_007d-option_002c-s390-2054"></a>
|
||
|
|
<dl><dt><code>-m31 | -m64</code><dd>Select 31- or 64-bit ABI implying a word size of 32- or 64-bit.
|
||
|
|
|
||
|
|
<p>These options are only available with the ELF object file format, and
|
||
|
|
require that the necessary BFD support has been included (on a 31-bit
|
||
|
|
platform you must add –enable-64-bit-bfd on the call to the configure
|
||
|
|
script to enable 64-bit usage and use s390x as target platform).
|
||
|
|
|
||
|
|
<p><a name="index-g_t_0040samp_007b_002dmesa_007d-option_002c-s390-2055"></a><a name="index-g_t_0040samp_007b_002dmzarch_007d-option_002c-s390-2056"></a><br><dt><code>-mesa | -mzarch</code><dd>Select the architecture mode, either the Enterprise System Architecture
|
||
|
|
(esa) mode or the z/Architecture mode (zarch).
|
||
|
|
|
||
|
|
<p>The 64-bit instructions are only available with the z/Architecture mode.
|
||
|
|
The combination of ‘<samp><span class="samp">-m64</span></samp>’ and ‘<samp><span class="samp">-mesa</span></samp>’ results in a warning
|
||
|
|
message.
|
||
|
|
|
||
|
|
<p><a name="index-g_t_0040samp_007b_002dmarch_003d_007d-option_002c-s390-2057"></a><br><dt><code>-march=</code><var>CPU</var><dd>This option specifies the target processor. The following processor names
|
||
|
|
are recognized:
|
||
|
|
<code>g5</code> (or <code>arch3</code>),
|
||
|
|
<code>g6</code>,
|
||
|
|
<code>z900</code> (or <code>arch5</code>),
|
||
|
|
<code>z990</code> (or <code>arch6</code>),
|
||
|
|
<code>z9-109</code>,
|
||
|
|
<code>z9-ec</code> (or <code>arch7</code>),
|
||
|
|
<code>z10</code> (or <code>arch8</code>),
|
||
|
|
<code>z196</code> (or <code>arch9</code>),
|
||
|
|
<code>zEC12</code> (or <code>arch10</code>),
|
||
|
|
<code>z13</code> (or <code>arch11</code>),
|
||
|
|
<code>z14</code> (or <code>arch12</code>), and
|
||
|
|
<code>arch13</code>).
|
||
|
|
|
||
|
|
<p>Assembling an instruction that is not supported on the target
|
||
|
|
processor results in an error message.
|
||
|
|
|
||
|
|
<p>The processor names starting with <code>arch</code> refer to the edition
|
||
|
|
number in the Principle of Operations manual. They can be used as
|
||
|
|
alternate processor names and have been added for compatibility with
|
||
|
|
the IBM XL compiler.
|
||
|
|
|
||
|
|
<p><code>arch3</code>, <code>g5</code> and <code>g6</code> cannot be used with the
|
||
|
|
‘<samp><span class="samp">-mzarch</span></samp>’ option since the z/Architecture mode is not supported
|
||
|
|
on these processor levels.
|
||
|
|
|
||
|
|
<p>There is no <code>arch4</code> option supported. <code>arch4</code> matches
|
||
|
|
<code>-march=arch5 -mesa</code>.
|
||
|
|
|
||
|
|
<p><a name="index-g_t_0040samp_007b_002dmregnames_007d-option_002c-s390-2058"></a><br><dt><code>-mregnames</code><dd>Allow symbolic names for registers.
|
||
|
|
|
||
|
|
<p><a name="index-g_t_0040samp_007b_002dmno_002dregnames_007d-option_002c-s390-2059"></a><br><dt><code>-mno-regnames</code><dd>Do not allow symbolic names for registers.
|
||
|
|
|
||
|
|
<p><a name="index-g_t_0040samp_007b_002dmwarn_002dareg_002dzero_007d-option_002c-s390-2060"></a><br><dt><code>-mwarn-areg-zero</code><dd>Warn whenever the operand for a base or index register has been specified
|
||
|
|
but evaluates to zero. This can indicate the misuse of general purpose
|
||
|
|
register 0 as an address register.
|
||
|
|
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
</body></html>
|
||
|
|
|