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diff --git a/devdocs/gcc~13/hppa-options.html b/devdocs/gcc~13/hppa-options.html new file mode 100644 index 00000000..bfe6fa51 --- /dev/null +++ b/devdocs/gcc~13/hppa-options.html @@ -0,0 +1,89 @@ +<div class="subsection-level-extent" id="HPPA-Options"> <div class="nav-panel"> <p> Next: <a href="ia-64-options" accesskey="n" rel="next">IA-64 Options</a>, Previous: <a href="h8_002f300-options" accesskey="p" rel="prev">H8/300 Options</a>, Up: <a href="submodel-options" accesskey="u" rel="up">Machine-Dependent Options</a> [<a href="index#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="indices" title="Index" rel="index">Index</a>]</p> </div> <h1 class="subsection" id="HPPA-Options-1"><span>3.19.19 HPPA Options<a class="copiable-link" href="#HPPA-Options-1"> ¶</a></span></h1> <p>These ‘<samp class="samp">-m</samp>’ options are defined for the HPPA family of computers: </p> <dl class="table"> <dt> +<span><code class="code">-march=<var class="var">architecture-type</var></code><a class="copiable-link" href="#index-march-5"> ¶</a></span> +</dt> <dd> +<p>Generate code for the specified architecture. The choices for <var class="var">architecture-type</var> are ‘<samp class="samp">1.0</samp>’ for PA 1.0, ‘<samp class="samp">1.1</samp>’ for PA 1.1, and ‘<samp class="samp">2.0</samp>’ for PA 2.0 processors. Refer to <samp class="file">/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> </dd> <dt> + <span><code class="code">-mpa-risc-1-0</code><a class="copiable-link" href="#index-mpa-risc-1-0"> ¶</a></span> +</dt> <dt><code class="code">-mpa-risc-1-1</code></dt> <dt><code class="code">-mpa-risc-2-0</code></dt> <dd> +<p>Synonyms for <samp class="option">-march=1.0</samp>, <samp class="option">-march=1.1</samp>, and <samp class="option">-march=2.0</samp> respectively. </p> </dd> <dt> + <span><code class="code">-matomic-libcalls</code><a class="copiable-link" href="#index-matomic-libcalls"> ¶</a></span> +</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 class="file">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 class="code">ldcw</code> instruction. Thus, all atomic support is implemented using sync and atomic libcalls. Sync libcall support is in <samp class="file">libgcc.a</samp>. Atomic libcall support is in <samp class="file">libatomic</samp>. </p> <p>This option generates <code class="code">__atomic_exchange</code> calls for atomic stores. It also provides special handling for atomic DImode accesses on 32-bit targets. </p> </dd> <dt> +<span><code class="code">-mbig-switch</code><a class="copiable-link" href="#index-mbig-switch"> ¶</a></span> +</dt> <dd> +<p>Does nothing. Preserved for backward compatibility. </p> </dd> <dt> +<span><code class="code">-mcaller-copies</code><a class="copiable-link" href="#index-mcaller-copies"> ¶</a></span> +</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> </dd> <dt> +<span><code class="code">-mcoherent-ldcw</code><a class="copiable-link" href="#index-mcoherent-ldcw"> ¶</a></span> +</dt> <dd> +<p>Use ldcw/ldcd coherent cache-control hint. </p> </dd> <dt> +<span><code class="code">-mdisable-fpregs</code><a class="copiable-link" href="#index-mdisable-fpregs"> ¶</a></span> +</dt> <dd> +<p>Disable floating-point registers. Equivalent to <code class="code">-msoft-float</code>. </p> </dd> <dt> +<span><code class="code">-mdisable-indexing</code><a class="copiable-link" href="#index-mdisable-indexing"> ¶</a></span> +</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> </dd> <dt> +<span><code class="code">-mfast-indirect-calls</code><a class="copiable-link" href="#index-mfast-indirect-calls"> ¶</a></span> +</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> </dd> <dt> +<span><code class="code">-mfixed-range=<var class="var">register-range</var></code><a class="copiable-link" href="#index-mfixed-range"> ¶</a></span> +</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> </dd> <dt> +<span><code class="code">-mgas</code><a class="copiable-link" href="#index-mgas"> ¶</a></span> +</dt> <dd> +<p>Enable the use of assembler directives only GAS understands. </p> </dd> <dt> +<span><code class="code">-mgnu-ld</code><a class="copiable-link" href="#index-mgnu-ld"> ¶</a></span> +</dt> <dd> +<p>Use options specific to GNU <code class="command">ld</code>. This passes <samp class="option">-shared</samp> to <code class="command">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 class="command">ld</code> is called; it only changes what parameters are passed to that <code class="command">ld</code>. The <code class="command">ld</code> that is called is determined by the <samp class="option">--with-ld</samp> configure option, GCC’s program search path, and finally by the user’s <code class="env">PATH</code>. The linker used by GCC can be printed using ‘<samp class="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 class="samp">hppa*64*-*-hpux*</samp>’. </p> </dd> <dt> +<span><code class="code">-mhp-ld</code><a class="copiable-link" href="#index-mhp-ld"> ¶</a></span> +</dt> <dd> +<p>Use options specific to HP <code class="command">ld</code>. This passes <samp class="option">-b</samp> to <code class="command">ld</code> when building a shared library and passes <samp class="option">+Accept TypeMismatch</samp> to <code class="command">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 class="command">ld</code> is called; it only changes what parameters are passed to that <code class="command">ld</code>. The <code class="command">ld</code> that is called is determined by the <samp class="option">--with-ld</samp> configure option, GCC’s program search path, and finally by the user’s <code class="env">PATH</code>. The linker used by GCC can be printed using ‘<samp class="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 class="samp">hppa*64*-*-hpux*</samp>’. </p> </dd> <dt> +<span><code class="code">-mlinker-opt</code><a class="copiable-link" href="#index-mlinker-opt"> ¶</a></span> +</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> </dd> <dt> + <span><code class="code">-mlong-calls</code><a class="copiable-link" href="#index-mno-long-calls-2"> ¶</a></span> +</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 class="option">-ffunction-sections</samp> option, or when using the <samp class="option">-mgas</samp> and <samp class="option">-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> </dd> <dt> +<span><code class="code">-mlong-load-store</code><a class="copiable-link" href="#index-mlong-load-store"> ¶</a></span> +</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 class="samp">+k</samp>’ option to the HP compilers. </p> </dd> <dt> +<span><code class="code">-mjump-in-delay</code><a class="copiable-link" href="#index-mjump-in-delay"> ¶</a></span> +</dt> <dd> +<p>This option is ignored and provided for compatibility purposes only. </p> </dd> <dt> + <span><code class="code">-mno-space-regs</code><a class="copiable-link" href="#index-mno-space-regs"> ¶</a></span> +</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> </dd> <dt> +<span><code class="code">-mordered</code><a class="copiable-link" href="#index-mordered"> ¶</a></span> +</dt> <dd> +<p>Assume memory references are ordered and barriers are not needed. </p> </dd> <dt> +<span><code class="code">-mportable-runtime</code><a class="copiable-link" href="#index-mportable-runtime"> ¶</a></span> +</dt> <dd> +<p>Use the portable calling conventions proposed by HP for ELF systems. </p> </dd> <dt> +<span><code class="code">-mschedule=<var class="var">cpu-type</var></code><a class="copiable-link" href="#index-mschedule"> ¶</a></span> +</dt> <dd> +<p>Schedule code according to the constraints for the machine type <var class="var">cpu-type</var>. The choices for <var class="var">cpu-type</var> are ‘<samp class="samp">700</samp>’ ‘<samp class="samp">7100</samp>’, ‘<samp class="samp">7100LC</samp>’, ‘<samp class="samp">7200</samp>’, ‘<samp class="samp">7300</samp>’ and ‘<samp class="samp">8000</samp>’. Refer to <samp class="file">/usr/lib/sched.models</samp> on an HP-UX system to determine the proper scheduling option for your machine. The default scheduling is ‘<samp class="samp">8000</samp>’. </p> </dd> <dt> +<span><code class="code">-msio</code><a class="copiable-link" href="#index-msio"> ¶</a></span> +</dt> <dd> +<p>Generate the predefine, <code class="code">_SIO</code>, for server IO. The default is <samp class="option">-mwsio</samp>. This generates the predefines, <code class="code">__hp9000s700</code>, <code class="code">__hp9000s700__</code> and <code class="code">_WSIO</code>, for workstation IO. These options are available under HP-UX and HI-UX. </p> </dd> <dt> +<span><code class="code">-msoft-float</code><a class="copiable-link" href="#index-msoft-float-4"> ¶</a></span> +</dt> <dd> +<p>Generate output containing library calls for floating point. <strong class="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 class="option">-msoft-float</samp> changes the calling convention in the output file; therefore, it is only useful if you compile <em class="emph">all</em> of a program with this option. In particular, you need to compile <samp class="file">libgcc.a</samp>, the library that comes with GCC, with <samp class="option">-msoft-float</samp> in order for this to work. </p> </dd> <dt> +<span><code class="code">-msoft-mult</code><a class="copiable-link" href="#index-msoft-mult"> ¶</a></span> +</dt> <dd> +<p>Use software integer multiplication. </p> <p>This disables the use of the <code class="code">xmpyu</code> instruction. </p> </dd> <dt> +<span><code class="code">-munix=<var class="var">unix-std</var></code><a class="copiable-link" href="#index-march-6"> ¶</a></span> +</dt> <dd> +<p>Generate compiler predefines and select a startfile for the specified UNIX standard. The choices for <var class="var">unix-std</var> are ‘<samp class="samp">93</samp>’, ‘<samp class="samp">95</samp>’ and ‘<samp class="samp">98</samp>’. ‘<samp class="samp">93</samp>’ is supported on all HP-UX versions. ‘<samp class="samp">95</samp>’ is available on HP-UX 10.10 and later. ‘<samp class="samp">98</samp>’ is available on HP-UX 11.11 and later. The default values are ‘<samp class="samp">93</samp>’ for HP-UX 10.00, ‘<samp class="samp">95</samp>’ for HP-UX 10.10 though to 11.00, and ‘<samp class="samp">98</samp>’ for HP-UX 11.11 and later. </p> <p><samp class="option">-munix=93</samp> provides the same predefines as GCC 3.3 and 3.4. <samp class="option">-munix=95</samp> provides additional predefines for <code class="code">XOPEN_UNIX</code> and <code class="code">_XOPEN_SOURCE_EXTENDED</code>, and the startfile <samp class="file">unix95.o</samp>. <samp class="option">-munix=98</samp> provides additional predefines for <code class="code">_XOPEN_UNIX</code>, <code class="code">_XOPEN_SOURCE_EXTENDED</code>, <code class="code">_INCLUDE__STDC_A1_SOURCE</code> and <code class="code">_INCLUDE_XOPEN_SOURCE_500</code>, and the startfile <samp class="file">unix98.o</samp>. </p> <p>It is <em class="emph">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 class="emph">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 class="code">__xpg4_extended_mask</code> as appropriate. Most GNU software doesn’t provide this capability. </p> </dd> <dt> +<span><code class="code">-nolibdld</code><a class="copiable-link" href="#index-nolibdld"> ¶</a></span> +</dt> <dd> +<p>Suppress the generation of link options to search libdld.sl when the <samp class="option">-static</samp> option is specified on HP-UX 10 and later. </p> </dd> <dt> +<span><code class="code">-static</code><a class="copiable-link" href="#index-static-2"> ¶</a></span> +</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 class="option">-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 class="option">-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 class="option">-nolibdld</samp> option can be used to prevent the GCC driver from adding these link options. </p> </dd> <dt> +<span><code class="code">-threads</code><a class="copiable-link" href="#index-threads"> ¶</a></span> +</dt> <dd><p>Add support for multithreading with the <em class="dfn">dce thread</em> library under HP-UX. This option sets flags for both the preprocessor and linker. </p></dd> </dl> </div> <div class="nav-panel"> <p> Next: <a href="ia-64-options">IA-64 Options</a>, Previous: <a href="h8_002f300-options">H8/300 Options</a>, Up: <a href="submodel-options">Machine-Dependent Options</a> [<a href="index#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="indices" title="Index" rel="index">Index</a>]</p> </div><div class="_attribution"> + <p class="_attribution-p"> + © Free Software Foundation<br>Licensed under the GNU Free Documentation License, Version 1.3.<br> + <a href="https://gcc.gnu.org/onlinedocs/gcc-13.1.0/gcc/HPPA-Options.html" class="_attribution-link">https://gcc.gnu.org/onlinedocs/gcc-13.1.0/gcc/HPPA-Options.html</a> + </p> +</div> |