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Viewing changes to xen/arch/i386/rwlock.c

  • Committer: Bazaar Package Importer
  • Author(s): Adam Heath
  • Date: 2005-07-06 12:35:50 UTC
  • mfrom: (1.1.1 upstream)
  • Revision ID: james.westby@ubuntu.com-20050706123550-9yx08wy5jdxmsxfq
Tags: 2.0.6-1
http://bugs.debian.org/311336
http://bugs.debian.org/317066
http://bugs.debian.org/304285
http://bugs.debian.org/300488
* Patches applied upstream: non-xen-init-exit.patch, add-build.patch,
  python-install.patch, disable-html-docs.patch.
* New upstream released.  Closes: #311336.
* Remove comparison to UML from xen short description.  Closes: #317066.
* Make packages conflicts with 1.2 doc debs.  Closes: #304285.
* Add iproute to xen depends, as it uses /bin/ip.  Closes: #300488,
  #317468.

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Lines of Context:
xen/arch/i386/rwlock.c
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#include <asm/atomic.h>
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#include <asm/rwlock.h>
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#if defined(CONFIG_SMP)
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asm(
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".align  4\n"
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".globl  __write_lock_failed\n"
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"__write_lock_failed:\n"
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"        " LOCK "addl    $" RW_LOCK_BIAS_STR ",(%eax)\n"
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"1:      rep; nop\n"
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"        cmpl    $" RW_LOCK_BIAS_STR ",(%eax)\n"
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"        jne     1b\n"
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"        " LOCK "subl    $" RW_LOCK_BIAS_STR ",(%eax)\n"
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"        jnz     __write_lock_failed\n"
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"        ret\n"
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".align  4\n"
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".globl  __read_lock_failed\n"
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"__read_lock_failed:\n"
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"        lock ; incl     (%eax)\n"
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"1:      rep; nop\n"
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"        cmpl    $1,(%eax)\n"
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"        js      1b\n"
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"        lock ; decl     (%eax)\n"
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"        js      __read_lock_failed\n"
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"        ret\n"
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);
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#endif