author David Zbarsky <>
Mon, 28 Sep 2009 23:07:45 -0700
changeset 33262 2c6aeb49c93cf5aec2f0fd77a71fc0168861dd71
parent 1 9b2a99adc05e53cd4010de512f50118594756650
child 94475 f4157e8c410708d76703f19e4dfb61859bfe32d8
permissions -rw-r--r--
Bug 507762: Parse CSS style sheets independently of case-sensitivity, and instead check case correctly when using the stylesheets. r=dbaron

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * 1.1 (the "License"); you may not use this file except in compliance with
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 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 * The Original Code is ``mcount''
 * The Initial Developer of the Original Code is Netscape
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 * Contributor(s):
 *   Chris Waterson <>
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  A library that can be LD_PRELOAD-ed to dump a function's address on
  function entry.


#include <unistd.h>

 * When compiled with `-pg' (or even just `-p'), gcc inserts a call to
 * |mcount| in each function prologue. This implementation of |mcount|
 * will grab the return address from the stack, and write it to stdout
 * as a binary stream, creating a gross execution trace the
 * instrumented program.
 * For more info on gcc inline assembly, see:
 *   <>
    register unsigned int caller;
    unsigned int buf[1];

    // Grab the return address. 
    asm("movl 4(%%esp),%0"
        : "=r"(caller));

    buf[0] = caller;
    write(STDOUT_FILENO, buf, sizeof buf[0]);