src/s/gnu-linux.h

/* This file is the configuration file for Linux-based GNU systems

Copyright (C) 1985-1986, 1992, 1994, 1996, 1999, 2001-2012
  Free Software Foundation, Inc.

This file was put together by Michael K. Johnson and Rik Faith.

This file is part of GNU Emacs.

GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */

#ifdef __ia64__
#define GC_MARK_SECONDARY_STACK()				\
  do {								\
    extern void *__libc_ia64_register_backing_store_base;	\
    __builtin_ia64_flushrs ();					\
    mark_memory (__libc_ia64_register_backing_store_base,	\
		 __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
Commit	Line	Data
	1	/* This file is the configuration file for Linux-based GNU systems
	2
	3	Copyright (C) 1985-1986, 1992, 1994, 1996, 1999, 2001-2012
	4	Free Software Foundation, Inc.
	5
	6	This file was put together by Michael K. Johnson and Rik Faith.
	7
	8	This file is part of GNU Emacs.
	9
	10	GNU Emacs is free software: you can redistribute it and/or modify
	11	it under the terms of the GNU General Public License as published by
	12	the Free Software Foundation, either version 3 of the License, or
	13	(at your option) any later version.
	14
	15	GNU Emacs is distributed in the hope that it will be useful,
	16	but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	GNU General Public License for more details.
	19
	20	You should have received a copy of the GNU General Public License
	21	along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
	22
	23	#ifdef __ia64__
	24	#define GC_MARK_SECONDARY_STACK() \
	25	do { \
	26	extern void *__libc_ia64_register_backing_store_base; \
	27	__builtin_ia64_flushrs (); \
	28	mark_memory (__libc_ia64_register_backing_store_base, \
	29	__builtin_ia64_bsp ()); \
	30	} while (0)
	31	#endif
	32
	33	/* Tell that garbage collector that setjmp is known to save all
	34	registers relevant for conservative garbage collection in the jmp_buf.
	35	Not all the architectures are tested, but there are Debian packages
	36	for SCM and/or Guile on them, so the technique must work. See also
	37	comments in alloc.c concerning setjmp and gcc. Fixme: it's
	38	probably safe to just let the GCC conditional in AH_BOTTOM handle this.
	39	*/
	40	#if defined __i386__ \|\| defined __sparc__ \|\| defined __mc68000__ \
	41	\|\| defined __alpha__ \|\| defined __mips__ \|\| defined __s390__ \
	42	\|\| defined __arm__ \|\| defined __powerpc__ \|\| defined __amd64__ \
	43	\|\| defined __ia64__ \|\| defined __sh__
	44	#define GC_SETJMP_WORKS 1
	45	#else
	46	#define GC_MARK_STACK GC_USE_GCPROS_AS_BEFORE
	47	#endif