diff options
| author | ngoto <ngoto@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-11-15 04:42:31 +0000 |
|---|---|---|
| committer | ngoto <ngoto@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-11-15 04:42:31 +0000 |
| commit | fa00b6516c96ffc888c194caf9bf964255c6ec54 (patch) | |
| tree | e577e3fd596b3ff8bee5a6c8c7947c0fab153cb2 /sparc.c | |
| parent | 9cdd62bd19f7872bab25912ed0485c098ea141d2 (diff) | |
* include/ruby/defines.h (FLUSH_REGISTER_WINDOWS): move sparc asm code
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
Diffstat (limited to 'sparc.c')
| -rw-r--r-- | sparc.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/sparc.c b/sparc.c new file mode 100644 index 0000000000..b764e900d7 --- /dev/null +++ b/sparc.c @@ -0,0 +1,30 @@ +/******************************************************************** + 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 + ; +} |