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* include/ruby/defines.h (FLUSH_REGISTER_WINDOWS): move sparc asm code

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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
This commit is contained in:
ngoto 2011-11-15 04:42:31 +00:00
parent 9cdd62bd19
commit fa00b6516c
4 changed files with 42 additions and 16 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
Tue Nov 15 13:38:14 2011 Naohisa Goto <ngotogenome@gmail.com>
* 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.
Tue Nov 15 13:11:35 2011 KOSAKI Motohiro <kosaki.motohiro@gmail.com>
* include/ruby/ruby.h: get rid of gcc specific rb_long2int(),

3
configure.in
View file

@ -1087,7 +1087,8 @@ AS_CASE(["$target_cpu"],
[CFLAGS="-mieee $CFLAGS"],
[osf*], # ccc
[CFLAGS="-ieee $CFLAGS"],
)])
)],
[sparc*], [AC_LIBOBJ([sparc])])
ac_cv_header_net_socket_h=${ac_cv_header_net_socket_h=no}
if test "$ac_cv_header_net_socket_h" = yes; then

17
include/ruby/defines.h
View file

@ -198,21 +198,8 @@ void xfree(void*);
#endif
#if defined(__sparc)
static inline void
flush_register_windows(void)
{
asm
#ifdef __GNUC__
volatile
#endif
# if SIZEOF_VOIDP > 4 /* workaround for Debian Sparc quirk */
("flushw")
# else
("ta 0x03")
# endif /* trap always to flush register windows if we are on a Sparc system */
;
}
# define FLUSH_REGISTER_WINDOWS flush_register_windows()
void rb_sparc_flush_register_windows();
# define FLUSH_REGISTER_WINDOWS rb_sparc_flush_register_windows()
#elif defined(__ia64)
void *rb_ia64_bsp(void);
void rb_ia64_flushrs(void);

30
sparc.c Normal file
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@ -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
;
}