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| author | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-16 18:49:26 +0900 |
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| committer | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-30 00:39:06 +0900 |
| commit | fcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch) | |
| tree | 64cb17de3f41a2b6fef2368028fbd00349946994 /jni/ruby/sparc.c | |
Fresh start
Diffstat (limited to 'jni/ruby/sparc.c')
| -rw-r--r-- | jni/ruby/sparc.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/jni/ruby/sparc.c b/jni/ruby/sparc.c new file mode 100644 index 0000000..dc37790 --- /dev/null +++ b/jni/ruby/sparc.c @@ -0,0 +1,40 @@ +/******************************************************************** + 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) +{ +/* + * gcc doesn't provide "asm" keyword if -ansi and the various -std options + * are given. + * http://gcc.gnu.org/onlinedocs/gcc/Alternate-Keywords.html + */ +#ifndef __GNUC__ +#define __asm__ asm +#endif + + __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 + ; +} |