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- <title>Stab Section Transformations (STABS)</title>
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- <a name="Stab-Section-Transformations"></a>
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- <p>
- Previous: <a href="Transformations-On-Global-Variables.html#Transformations-On-Global-Variables" accesskey="p" rel="prev">Transformations On Global Variables</a>, Up: <a href="Transformations-On-Symbol-Tables.html#Transformations-On-Symbol-Tables" accesskey="u" rel="up">Transformations On Symbol Tables</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Symbol-Types-Index.html#Symbol-Types-Index" title="Index" rel="index">Index</a>]</p>
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- <a name="Transformations-of-Stabs-in-separate-sections"></a>
- <h4 class="subsection">7.2.3 Transformations of Stabs in separate sections</h4>
-
- <p>For object file formats using stabs in separate sections (see <a href="Stab-Sections.html#Stab-Sections">Stab Sections</a>), use <code>objdump --stabs</code> instead of <code>nm</code> to show the
- stabs in an object or executable file. <code>objdump</code> is a GNU utility;
- Sun does not provide any equivalent.
- </p>
- <p>The following example is for a stab whose value is an address is
- relative to the compilation unit (see <a href="ELF-Linker-Relocation.html#ELF-Linker-Relocation">ELF Linker Relocation</a>). For
- example, if the source line
- </p>
- <div class="example">
- <pre class="example">static int ld = 5;
- </pre></div>
-
- <p>appears within a function, then the assembly language output from the
- compiler contains:
- </p>
- <div class="example">
- <pre class="example">.Ddata.data:
- …
- .stabs "ld:V(0,3)",0x26,0,4,.L18-Ddata.data # <span class="roman">0x26 is N_STSYM</span>
- …
- .L18:
- .align 4
- .word 0x5
- </pre></div>
-
- <p>Because the value is formed by subtracting one symbol from another, the
- value is absolute, not relocatable, and so the object file contains
- </p>
- <div class="example">
- <pre class="example">Symnum n_type n_othr n_desc n_value n_strx String
- 31 STSYM 0 4 00000004 680 ld:V(0,3)
- </pre></div>
-
- <p>without any relocations, and the executable file also contains
- </p>
- <div class="example">
- <pre class="example">Symnum n_type n_othr n_desc n_value n_strx String
- 31 STSYM 0 4 00000004 680 ld:V(0,3)
- </pre></div>
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