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Trivial re-ordering and comment updating

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This commit is contained in:
Glenn Morris 2012-07-11 14:39:44 -04:00
parent 86aa551c1b
commit e091e1bd02
1 changed files with 13 additions and 14 deletions
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27
src/s/gnu-linux.h
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@ -87,20 +87,6 @@ along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
#define NARROWPROTO 1
/* Tell that garbage collector that setjmp is known to save all
registers relevant for conservative garbage collection in the jmp_buf. */
/* Not all the architectures are tested, but there are Debian packages
for SCM and/or Guile on them, so the technique must work. See also
comments in alloc.c concerning setjmp and gcc. Fixme: it's
probably safe to make this conditional just on GCC, except for ia64
register window-flushing. */
/* Don't use #cpu here since in newest development versions of GCC,
we must call cpp with -traditional, and that disables #cpu. */
#if defined __i386__ || defined __sparc__ || defined __mc68000__ \
|| defined __alpha__ || defined __mips__ || defined __s390__ \
|| defined __arm__ || defined __powerpc__ || defined __amd64__ \
|| defined __ia64__ || defined __sh__
#define GC_SETJMP_WORKS 1
#ifdef __ia64__
#define GC_MARK_SECONDARY_STACK() \
do { \
@ -110,6 +96,19 @@ along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
__builtin_ia64_bsp ()); \
} while (0)
#endif
/* Tell that garbage collector that setjmp is known to save all
registers relevant for conservative garbage collection in the jmp_buf.
Not all the architectures are tested, but there are Debian packages
for SCM and/or Guile on them, so the technique must work. See also
comments in alloc.c concerning setjmp and gcc. Fixme: it's
probably safe to just let the GCC conditional in AH_BOTTOM handle this.
*/
#if defined __i386__ || defined __sparc__ || defined __mc68000__ \
|| defined __alpha__ || defined __mips__ || defined __s390__ \
|| defined __arm__ || defined __powerpc__ || defined __amd64__ \
|| defined __ia64__ || defined __sh__
#define GC_SETJMP_WORKS 1
#else
#define GC_MARK_STACK GC_USE_GCPROS_AS_BEFORE
#endif