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Copies published by the Free Software Foundation raise funds for GNU development. --> <!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ --> <head> <title>DBX Hooks (GNU Compiler Collection (GCC) Internals)</title> <meta name="description" content="DBX Hooks (GNU Compiler Collection (GCC) Internals)"> <meta name="keywords" content="DBX Hooks (GNU Compiler Collection (GCC) Internals)"> <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="Option-Index.html#Option-Index" rel="index" title="Option Index"> <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> <link href="Debugging-Info.html#Debugging-Info" rel="up" title="Debugging Info"> <link href="File-Names-and-DBX.html#File-Names-and-DBX" rel="next" title="File Names and DBX"> <link href="DBX-Options.html#DBX-Options" rel="prev" title="DBX Options"> <style type="text/css"> <!-- a.summary-letter {text-decoration: none} blockquote.indentedblock {margin-right: 0em} blockquote.smallindentedblock {margin-right: 0em; font-size: smaller} blockquote.smallquotation {font-size: smaller} div.display {margin-left: 3.2em} div.example {margin-left: 3.2em} div.lisp {margin-left: 3.2em} div.smalldisplay {margin-left: 3.2em} div.smallexample {margin-left: 3.2em} 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.nolinebreak {white-space: nowrap} span.roman {font-family: initial; font-weight: normal} span.sansserif {font-family: sans-serif; font-weight: normal} ul.no-bullet {list-style: none} --> </style> </head> <body lang="en"> <a name="DBX-Hooks"></a> <div class="header"> <p> Next: <a href="File-Names-and-DBX.html#File-Names-and-DBX" accesskey="n" rel="next">File Names and DBX</a>, Previous: <a href="DBX-Options.html#DBX-Options" accesskey="p" rel="prev">DBX Options</a>, Up: <a href="Debugging-Info.html#Debugging-Info" accesskey="u" rel="up">Debugging Info</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p> </div> <hr> <a name="Open_002dEnded-Hooks-for-DBX-Format"></a> <h4 class="subsection">18.21.3 Open-Ended Hooks for DBX Format</h4> <p>These are hooks for DBX format. </p> <dl> <dt><a name="index-DBX_005fOUTPUT_005fSOURCE_005fLINE"></a>Macro: <strong>DBX_OUTPUT_SOURCE_LINE</strong> <em>(<var>stream</var>, <var>line</var>, <var>counter</var>)</em></dt> <dd><p>A C statement to output DBX debugging information before code for line number <var>line</var> of the current source file to the stdio stream <var>stream</var>. <var>counter</var> is the number of time the macro was invoked, including the current invocation; it is intended to generate unique labels in the assembly output. </p> <p>This macro should not be defined if the default output is correct, or if it can be made correct by defining <code>DBX_LINES_FUNCTION_RELATIVE</code>. </p></dd></dl> <dl> <dt><a name="index-NO_005fDBX_005fFUNCTION_005fEND"></a>Macro: <strong>NO_DBX_FUNCTION_END</strong></dt> <dd><p>Some stabs encapsulation formats (in particular ECOFF), cannot handle the <code>.stabs "",N_FUN,,0,0,Lscope-function-1</code> gdb dbx extension construct. On those machines, define this macro to turn this feature off without disturbing the rest of the gdb extensions. </p></dd></dl> <dl> <dt><a name="index-NO_005fDBX_005fBNSYM_005fENSYM"></a>Macro: <strong>NO_DBX_BNSYM_ENSYM</strong></dt> <dd><p>Some assemblers cannot handle the <code>.stabd BNSYM/ENSYM,0,0</code> gdb dbx extension construct. On those machines, define this macro to turn this feature off without disturbing the rest of the gdb extensions. </p></dd></dl> </body> </html>