2006-06-02  Geoffrey Keating  <geoffk@apple.com>

	* config/rs6000/host-darwin.c (sigaltstack): Protect prototype with
	HAVE_DECL_SIGALTSTACK.
	(MC_FLD): New.
	(segv_handler): Use MC_FLD.
	* configure.ac: Check for a sigaltstack declaration.
	Compute HAS_MCONTEXT_T_UNDERSCORES on Darwin.
	* configure: Regenerate.
	* config.in: Regenerate.

Index: boehm-gc/ChangeLog
2006-06-02  Geoffrey Keating  <geoffk@apple.com>

	* configure.ac: Define HAS_PPC_THREAD_STATE_R0,
	HAS_PPC_THREAD_STATE___R0, HAS_PPC_THREAD_STATE64_R0,
	HAS_PPC_THREAD_STATE64___R0, HAS_I386_THREAD_STATE_EAX,
	HAS_I386_THREAD_STATE___EAX.
	* configure: Regenerate.
	* include/gc_config.h.in: Regenerate.
	* darwin_stop_world.c (PPC_RED_ZONE_SIZE): Use standard Darwin
	macro names to determine value.
	(THREAD_STATE): New.
	(THREAD_FLD): New.
	(GC_push_all_stacks): Use THREAD_STATE and THREAD_FLD in both versions.

From-SVN: r114339