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* include/ruby/defines.h (FLUSH_REGISTER_WINDOWS): move sparc asm code

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to a separete file sparc.c for preventing inlining optimization.
  Patched by Jurij Smakov. [Bug #5244] [ruby-core:40685]
* sparc.c (rb_sparc_flush_register_windows): ditto.
* configure.in: ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33757 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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ngoto 2011-11-15 04:42:31 +00:00
parent 9cdd62bd19
commit fa00b6516c
4 changed files with 42 additions and 16 deletions
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30
sparc.c Normal file
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/********************************************************************
Flush register windows on sparc.
This function is in a separate file to prevent inlining. The "flushw"
assembler instruction used on sparcv9 flushes all register windows
except the current one, so if it is inlined, the current register
window of the process executing the instruction will not be flushed
correctly.
See http://redmine.ruby-lang.org/issues/5244 for discussion.
*********************************************************************/
void rb_sparc_flush_register_windows()
{
asm
#ifdef __GNUC__
__volatile__
#endif
/* This condition should be in sync with one in configure.in */
#if defined(__sparcv9) || defined(__sparc_v9__) || defined(__arch64__)
# ifdef __GNUC__
("flushw" : : : "%o7")
# else
("flushw")
# endif /* __GNUC__ */
#else
("ta 0x03")
#endif
;
}