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diff --git a/share/doc/gcc/HPPA-Options.html b/share/doc/gcc/HPPA-Options.html new file mode 100644 index 0000000..fbfa91b --- /dev/null +++ b/share/doc/gcc/HPPA-Options.html @@ -0,0 +1,388 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- This file documents the use of the GNU compilers. + +Copyright (C) 1988-2023 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 the +Invariant Sections being "Funding Free Software", the Front-Cover +Texts being (a) (see below), and with the Back-Cover Texts being (b) +(see below). A copy of the license is included in the section entitled +"GNU Free Documentation License". + +(a) The FSF's Front-Cover Text is: + +A GNU Manual + +(b) The FSF's Back-Cover Text is: + +You have freedom to copy and modify this GNU Manual, like GNU + software. Copies published by the Free Software Foundation raise + funds for GNU development. --> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>Using the GNU Compiler Collection (GCC): HPPA Options</title> + +<meta name="description" content="Using the GNU Compiler Collection (GCC): HPPA Options"> +<meta name="keywords" content="Using the GNU Compiler Collection (GCC): HPPA Options"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Indices.html#Indices" rel="index" title="Indices"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="Submodel-Options.html#Submodel-Options" rel="up" title="Submodel Options"> +<link href="IA_002d64-Options.html#IA_002d64-Options" rel="next" title="IA-64 Options"> +<link href="H8_002f300-Options.html#H8_002f300-Options" rel="previous" title="H8/300 Options"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.indentedblock {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smallindentedblock {margin-left: 3.2em; font-size: smaller} +div.smalllisp {margin-left: 3.2em} +kbd {font-style:oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +pre.smalldisplay {font-family: inherit; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: inherit; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.nocodebreak {white-space:nowrap} +span.nolinebreak {white-space:nowrap} +span.roman {font-family:serif; font-weight:normal} +span.sansserif {font-family:sans-serif; font-weight:normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en_US" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="HPPA-Options"></a> +<div class="header"> +<p> +Next: <a href="IA_002d64-Options.html#IA_002d64-Options" accesskey="n" rel="next">IA-64 Options</a>, Previous: <a href="H8_002f300-Options.html#H8_002f300-Options" accesskey="p" rel="previous">H8/300 Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Indices.html#Indices" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="HPPA-Options-1"></a> +<h4 class="subsection">3.19.19 HPPA Options</h4> +<a name="index-HPPA-Options"></a> + +<p>These ‘<samp>-m</samp>’ options are defined for the HPPA family of computers: +</p> +<dl compact="compact"> +<dd><a name="index-march-5"></a> +</dd> +<dt><code>-march=<var>architecture-type</var></code></dt> +<dd><p>Generate code for the specified architecture. The choices for +<var>architecture-type</var> are ‘<samp>1.0</samp>’ for PA 1.0, ‘<samp>1.1</samp>’ for PA +1.1, and ‘<samp>2.0</samp>’ for PA 2.0 processors. Refer to +<samp>/usr/lib/sched.models</samp> on an HP-UX system to determine the proper +architecture option for your machine. Code compiled for lower numbered +architectures runs on higher numbered architectures, but not the +other way around. +</p> +<a name="index-mpa_002drisc_002d1_002d0"></a> +<a name="index-mpa_002drisc_002d1_002d1"></a> +<a name="index-mpa_002drisc_002d2_002d0"></a> +</dd> +<dt><code>-mpa-risc-1-0</code></dt> +<dt><code>-mpa-risc-1-1</code></dt> +<dt><code>-mpa-risc-2-0</code></dt> +<dd><p>Synonyms for <samp>-march=1.0</samp>, <samp>-march=1.1</samp>, and <samp>-march=2.0</samp> respectively. +</p> +<a name="index-matomic_002dlibcalls"></a> +<a name="index-mno_002datomic_002dlibcalls"></a> +</dd> +<dt><code>-matomic-libcalls</code></dt> +<dd><p>Generate libcalls for atomic loads and stores when sync libcalls are disabled. +This option is enabled by default. It only affects the generation of +atomic libcalls by the HPPA backend. +</p> +<p>Both the sync and <samp>libatomic</samp> libcall implementations use locking. +As a result, processor stores are not atomic with respect to other +atomic operations. Processor loads up to DImode are atomic with +respect to other atomic operations provided they are implemented as +a single access. +</p> +<p>The PA-RISC architecture does not support any atomic operations in +hardware except for the <code>ldcw</code> instruction. Thus, all atomic +support is implemented using sync and atomic libcalls. Sync libcall +support is in <samp>libgcc.a</samp>. Atomic libcall support is in +<samp>libatomic</samp>. +</p> +<p>This option generates <code>__atomic_exchange</code> calls for atomic stores. +It also provides special handling for atomic DImode accesses on 32-bit +targets. +</p> +<a name="index-mbig_002dswitch"></a> +</dd> +<dt><code>-mbig-switch</code></dt> +<dd><p>Does nothing. Preserved for backward compatibility. +</p> +<a name="index-mcaller_002dcopies"></a> +</dd> +<dt><code>-mcaller-copies</code></dt> +<dd><p>The caller copies function arguments passed by hidden reference. This +option should be used with care as it is not compatible with the default +32-bit runtime. However, only aggregates larger than eight bytes are +passed by hidden reference and the option provides better compatibility +with OpenMP. +</p> +<a name="index-mcoherent_002dldcw"></a> +</dd> +<dt><code>-mcoherent-ldcw</code></dt> +<dd><p>Use ldcw/ldcd coherent cache-control hint. +</p> +<a name="index-mdisable_002dfpregs"></a> +</dd> +<dt><code>-mdisable-fpregs</code></dt> +<dd><p>Disable floating-point registers. Equivalent to <code>-msoft-float</code>. +</p> +<a name="index-mdisable_002dindexing"></a> +</dd> +<dt><code>-mdisable-indexing</code></dt> +<dd><p>Prevent the compiler from using indexing address modes. This avoids some +rather obscure problems when compiling MIG generated code under MACH. +</p> +<a name="index-mfast_002dindirect_002dcalls"></a> +</dd> +<dt><code>-mfast-indirect-calls</code></dt> +<dd><p>Generate code that assumes calls never cross space boundaries. This +allows GCC to emit code that performs faster indirect calls. +</p> +<p>This option does not work in the presence of shared libraries or nested +functions. +</p> +<a name="index-mfixed_002drange"></a> +</dd> +<dt><code>-mfixed-range=<var>register-range</var></code></dt> +<dd><p>Generate code treating the given register range as fixed registers. +A fixed register is one that the register allocator cannot use. This is +useful when compiling kernel code. A register range is specified as +two registers separated by a dash. Multiple register ranges can be +specified separated by a comma. +</p> +<a name="index-mgas"></a> +</dd> +<dt><code>-mgas</code></dt> +<dd><p>Enable the use of assembler directives only GAS understands. +</p> +<a name="index-mgnu_002dld"></a> +</dd> +<dt><code>-mgnu-ld</code></dt> +<dd><p>Use options specific to GNU <code>ld</code>. +This passes <samp>-shared</samp> to <code>ld</code> when +building a shared library. It is the default when GCC is configured, +explicitly or implicitly, with the GNU linker. This option does not +affect which <code>ld</code> is called; it only changes what parameters +are passed to that <code>ld</code>. +The <code>ld</code> that is called is determined by the +<samp>--with-ld</samp> configure option, GCC’s program search path, and +finally by the user’s <code>PATH</code>. The linker used by GCC can be printed +using ‘<samp>which `gcc -print-prog-name=ld`</samp>’. This option is only available +on the 64-bit HP-UX GCC, i.e. configured with ‘<samp>hppa*64*-*-hpux*</samp>’. +</p> +<a name="index-mhp_002dld"></a> +</dd> +<dt><code>-mhp-ld</code></dt> +<dd><p>Use options specific to HP <code>ld</code>. +This passes <samp>-b</samp> to <code>ld</code> when building +a shared library and passes <samp>+Accept TypeMismatch</samp> to <code>ld</code> on all +links. It is the default when GCC is configured, explicitly or +implicitly, with the HP linker. This option does not affect +which <code>ld</code> is called; it only changes what parameters are passed to that +<code>ld</code>. +The <code>ld</code> that is called is determined by the <samp>--with-ld</samp> +configure option, GCC’s program search path, and finally by the user’s +<code>PATH</code>. The linker used by GCC can be printed using ‘<samp>which +`gcc -print-prog-name=ld`</samp>’. This option is only available on the 64-bit +HP-UX GCC, i.e. configured with ‘<samp>hppa*64*-*-hpux*</samp>’. +</p> +<a name="index-mlinker_002dopt"></a> +</dd> +<dt><code>-mlinker-opt</code></dt> +<dd><p>Enable the optimization pass in the HP-UX linker. Note this makes symbolic +debugging impossible. It also triggers a bug in the HP-UX 8 and HP-UX 9 +linkers in which they give bogus error messages when linking some programs. +</p> +<a name="index-mno_002dlong_002dcalls-2"></a> +<a name="index-mlong_002dcalls-5"></a> +</dd> +<dt><code>-mlong-calls</code></dt> +<dd><p>Generate code that uses long call sequences. This ensures that a call +is always able to reach linker generated stubs. The default is to generate +long calls only when the distance from the call site to the beginning +of the function or translation unit, as the case may be, exceeds a +predefined limit set by the branch type being used. The limits for +normal calls are 7,600,000 and 240,000 bytes, respectively for the +PA 2.0 and PA 1.X architectures. Sibcalls are always limited at +240,000 bytes. +</p> +<p>Distances are measured from the beginning of functions when using the +<samp>-ffunction-sections</samp> option, or when using the <samp>-mgas</samp> +and <samp>-mno-portable-runtime</samp> options together under HP-UX with +the SOM linker. +</p> +<p>It is normally not desirable to use this option as it degrades +performance. However, it may be useful in large applications, +particularly when partial linking is used to build the application. +</p> +<p>The types of long calls used depends on the capabilities of the +assembler and linker, and the type of code being generated. The +impact on systems that support long absolute calls, and long pic +symbol-difference or pc-relative calls should be relatively small. +However, an indirect call is used on 32-bit ELF systems in pic code +and it is quite long. +</p> +<a name="index-mlong_002dload_002dstore"></a> +</dd> +<dt><code>-mlong-load-store</code></dt> +<dd><p>Generate 3-instruction load and store sequences as sometimes required by +the HP-UX 10 linker. This is equivalent to the ‘<samp>+k</samp>’ option to +the HP compilers. +</p> +<a name="index-mjump_002din_002ddelay"></a> +</dd> +<dt><code>-mjump-in-delay</code></dt> +<dd><p>This option is ignored and provided for compatibility purposes only. +</p> +<a name="index-mno_002dspace_002dregs"></a> +<a name="index-mspace_002dregs"></a> +</dd> +<dt><code>-mno-space-regs</code></dt> +<dd><p>Generate code that assumes the target has no space registers. This allows +GCC to generate faster indirect calls and use unscaled index address modes. +</p> +<p>Such code is suitable for level 0 PA systems and kernels. +</p> +<a name="index-mordered"></a> +</dd> +<dt><code>-mordered</code></dt> +<dd><p>Assume memory references are ordered and barriers are not needed. +</p> +<a name="index-mportable_002druntime"></a> +</dd> +<dt><code>-mportable-runtime</code></dt> +<dd><p>Use the portable calling conventions proposed by HP for ELF systems. +</p> +<a name="index-mschedule"></a> +</dd> +<dt><code>-mschedule=<var>cpu-type</var></code></dt> +<dd><p>Schedule code according to the constraints for the machine type +<var>cpu-type</var>. The choices for <var>cpu-type</var> are ‘<samp>700</samp>’ +‘<samp>7100</samp>’, ‘<samp>7100LC</samp>’, ‘<samp>7200</samp>’, ‘<samp>7300</samp>’ and ‘<samp>8000</samp>’. Refer +to <samp>/usr/lib/sched.models</samp> on an HP-UX system to determine the +proper scheduling option for your machine. The default scheduling is +‘<samp>8000</samp>’. +</p> +<a name="index-msio"></a> +</dd> +<dt><code>-msio</code></dt> +<dd><p>Generate the predefine, <code>_SIO</code>, for server IO. The default is +<samp>-mwsio</samp>. This generates the predefines, <code>__hp9000s700</code>, +<code>__hp9000s700__</code> and <code>_WSIO</code>, for workstation IO. These +options are available under HP-UX and HI-UX. +</p> +<a name="index-msoft_002dfloat-4"></a> +</dd> +<dt><code>-msoft-float</code></dt> +<dd><p>Generate output containing library calls for floating point. +<strong>Warning:</strong> the requisite libraries are not available for all HPPA +targets. Normally the facilities of the machine’s usual C compiler are +used, but this cannot be done directly in cross-compilation. You must make +your own arrangements to provide suitable library functions for +cross-compilation. +</p> +<p><samp>-msoft-float</samp> changes the calling convention in the output file; +therefore, it is only useful if you compile <em>all</em> of a program with +this option. In particular, you need to compile <samp>libgcc.a</samp>, the +library that comes with GCC, with <samp>-msoft-float</samp> in order for +this to work. +</p> +<a name="index-msoft_002dmult"></a> +</dd> +<dt><code>-msoft-mult</code></dt> +<dd><p>Use software integer multiplication. +</p> +<p>This disables the use of the <code>xmpyu</code> instruction. +</p> +<a name="index-march-6"></a> +</dd> +<dt><code>-munix=<var>unix-std</var></code></dt> +<dd><p>Generate compiler predefines and select a startfile for the specified +UNIX standard. The choices for <var>unix-std</var> are ‘<samp>93</samp>’, ‘<samp>95</samp>’ +and ‘<samp>98</samp>’. ‘<samp>93</samp>’ is supported on all HP-UX versions. ‘<samp>95</samp>’ +is available on HP-UX 10.10 and later. ‘<samp>98</samp>’ is available on HP-UX +11.11 and later. The default values are ‘<samp>93</samp>’ for HP-UX 10.00, +‘<samp>95</samp>’ for HP-UX 10.10 though to 11.00, and ‘<samp>98</samp>’ for HP-UX 11.11 +and later. +</p> +<p><samp>-munix=93</samp> provides the same predefines as GCC 3.3 and 3.4. +<samp>-munix=95</samp> provides additional predefines for <code>XOPEN_UNIX</code> +and <code>_XOPEN_SOURCE_EXTENDED</code>, and the startfile <samp>unix95.o</samp>. +<samp>-munix=98</samp> provides additional predefines for <code>_XOPEN_UNIX</code>, +<code>_XOPEN_SOURCE_EXTENDED</code>, <code>_INCLUDE__STDC_A1_SOURCE</code> and +<code>_INCLUDE_XOPEN_SOURCE_500</code>, and the startfile <samp>unix98.o</samp>. +</p> +<p>It is <em>important</em> to note that this option changes the interfaces +for various library routines. It also affects the operational behavior +of the C library. Thus, <em>extreme</em> care is needed in using this +option. +</p> +<p>Library code that is intended to operate with more than one UNIX +standard must test, set and restore the variable <code>__xpg4_extended_mask</code> +as appropriate. Most GNU software doesn’t provide this capability. +</p> +<a name="index-nolibdld"></a> +</dd> +<dt><code>-nolibdld</code></dt> +<dd><p>Suppress the generation of link options to search libdld.sl when the +<samp>-static</samp> option is specified on HP-UX 10 and later. +</p> +<a name="index-static-2"></a> +</dd> +<dt><code>-static</code></dt> +<dd><p>The HP-UX implementation of setlocale in libc has a dependency on +libdld.sl. There isn’t an archive version of libdld.sl. Thus, +when the <samp>-static</samp> option is specified, special link options +are needed to resolve this dependency. +</p> +<p>On HP-UX 10 and later, the GCC driver adds the necessary options to +link with libdld.sl when the <samp>-static</samp> option is specified. +This causes the resulting binary to be dynamic. On the 64-bit port, +the linkers generate dynamic binaries by default in any case. The +<samp>-nolibdld</samp> option can be used to prevent the GCC driver from +adding these link options. +</p> +<a name="index-threads"></a> +</dd> +<dt><code>-threads</code></dt> +<dd><p>Add support for multithreading with the <em>dce thread</em> library +under HP-UX. This option sets flags for both the preprocessor and +linker. +</p></dd> +</dl> + +<hr> +<div class="header"> +<p> +Next: <a href="IA_002d64-Options.html#IA_002d64-Options" accesskey="n" rel="next">IA-64 Options</a>, Previous: <a href="H8_002f300-Options.html#H8_002f300-Options" accesskey="p" rel="previous">H8/300 Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Indices.html#Indices" title="Index" rel="index">Index</a>]</p> +</div> + + + +</body> +</html> |