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* gc.c: support ia64 register backing store.

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(SCM_MARK_BACKING_STORE): new macro.
This commit is contained in:
Rob Browning 2001-10-09 03:33:16 +00:00
parent 766c5eaf49
commit d918965272
1 changed files with 20 additions and 0 deletions
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20
libguile/gc.c
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@ -52,6 +52,11 @@
#include <errno.h>
#include <string.h>
#ifdef __ia64__
#include <ucontext.h>
extern unsigned long __libc_ia64_register_backing_store_base;
#endif
#include "libguile/_scm.h"
#include "libguile/eval.h"
#include "libguile/stime.h"
@ -1029,6 +1034,20 @@ scm_t_c_hook scm_before_sweep_c_hook;
scm_t_c_hook scm_after_sweep_c_hook;
scm_t_c_hook scm_after_gc_c_hook;
#ifdef __ia64__
# define SCM_MARK_BACKING_STORE() do { \
ucontext_t ctx; \
SCM_STACKITEM * top, * bot; \
getcontext (&ctx); \
scm_mark_locations ((SCM_STACKITEM *) &ctx.uc_mcontext, \
((size_t) (sizeof (SCM_STACKITEM) - 1 + sizeof ctx.uc_mcontext) \
/ sizeof (SCM_STACKITEM))); \
bot = (SCM_STACKITEM *) __libc_ia64_register_backing_store_base; \
top = (SCM_STACKITEM *) ctx.uc_mcontext.sc_ar_bsp; \
scm_mark_locations (bot, top - bot); } while (0)
#else
# define SCM_MARK_BACKING_STORE()
#endif
void
scm_igc (const char *what)
@ -1084,6 +1103,7 @@ scm_igc (const char *what)
scm_mark_locations (scm_stack_base - stack_len, stack_len);
#endif
}
SCM_MARK_BACKING_STORE();
#else /* USE_THREADS */