mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
f4d2374b45
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36232 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
31 lines
878 B
C
31 lines
878 B
C
/********************************************************************
|
|
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://bugs.ruby-lang.org/issues/5244 for discussion.
|
|
*********************************************************************/
|
|
void
|
|
rb_sparc_flush_register_windows(void)
|
|
{
|
|
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
|
|
;
|
|
}
|