MIPS.html 4.6 KB

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  3. <!-- This file documents the GNU linker LD
  4. (GNU Binutils)
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  58. <a name="MIPS"></a>
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  60. <p>
  61. Next: <a href="MMIX.html#MMIX" accesskey="n" rel="next">MMIX</a>, Previous: <a href="M68K.html#M68K" accesskey="p" rel="prev">M68K</a>, Up: <a href="Machine-Dependent.html#Machine-Dependent" accesskey="u" rel="up">Machine Dependent</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="LD-Index.html#LD-Index" title="Index" rel="index">Index</a>]</p>
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  63. <hr>
  64. <a name="ld-and-the-MIPS-family"></a>
  65. <h3 class="section">4.7 <code>ld</code> and the MIPS family</h3>
  66. <a name="index-MIPS-microMIPS-instruction-choice-selection"></a>
  67. <a name="index-_002d_002dinsn32-1"></a>
  68. <a name="index-_002d_002dno_002dinsn32-1"></a>
  69. <p>The &lsquo;<samp>--insn32</samp>&rsquo; and &lsquo;<samp>--no-insn32</samp>&rsquo; options control the choice of
  70. microMIPS instructions used in code generated by the linker, such as that
  71. in the PLT or lazy binding stubs, or in relaxation. If &lsquo;<samp>--insn32</samp>&rsquo; is
  72. used, then the linker only uses 32-bit instruction encodings. By default
  73. or if &lsquo;<samp>--no-insn32</samp>&rsquo; is used, all instruction encodings are used,
  74. including 16-bit ones where possible.
  75. </p>
  76. <a name="index-MIPS-branch-relocation-check-control"></a>
  77. <a name="index-_002d_002dignore_002dbranch_002disa-1"></a>
  78. <a name="index-_002d_002dno_002dignore_002dbranch_002disa-1"></a>
  79. <p>The &lsquo;<samp>--ignore-branch-isa</samp>&rsquo; and &lsquo;<samp>--no-ignore-branch-isa</samp>&rsquo; options
  80. control branch relocation checks for invalid ISA mode transitions. If
  81. &lsquo;<samp>--ignore-branch-isa</samp>&rsquo; is used, then the linker accepts any branch
  82. relocations and any ISA mode transition required is lost in relocation
  83. calculation, except for some cases of <code>BAL</code> instructions which meet
  84. relaxation conditions and are converted to equivalent <code>JALX</code>
  85. instructions as the associated relocation is calculated. By default
  86. or if &lsquo;<samp>--no-ignore-branch-isa</samp>&rsquo; is used a check is made causing
  87. the loss of an ISA mode transition to produce an error.
  88. </p>
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