Ruby  2.0.0p598(2014-11-13revision48408)
sparc.c
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1 /********************************************************************
2  Flush register windows on sparc.
3 
4  This function is in a separate file to prevent inlining. The "flushw"
5  assembler instruction used on sparcv9 flushes all register windows
6  except the current one, so if it is inlined, the current register
7  window of the process executing the instruction will not be flushed
8  correctly.
9 
10  See http://bugs.ruby-lang.org/issues/5244 for discussion.
11 *********************************************************************/
12 void
14 {
15  asm
16 #ifdef __GNUC__
17  __volatile__
18 #endif
19 
20 /* This condition should be in sync with one in configure.in */
21 #if defined(__sparcv9) || defined(__sparc_v9__) || defined(__arch64__)
22 # ifdef __GNUC__
23  ("flushw" : : : "%o7")
24 # else
25  ("flushw")
26 # endif /* __GNUC__ */
27 #else
28  ("ta 0x03")
29 #endif
30  ;
31 }
void rb_sparc_flush_register_windows(void)
Definition: sparc.c:13