diff options
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 + ; +} |