Use sigsetjmp/siglongjmp in opcodes

sigsetjmp/siglongjmp without saving the signal mask is faster than
setjmp/longjmp on systems where the signal mask is saved.  This patch
uses sigsetjmp/siglongjmp without saving the signal mask if possible.

	PR binutils/16886
	* config.in: Regenerated.
	* configure: Likewise.
	* configure.in: Check if sigsetjmp is available.
	* h8500-dis.c (private): Replace jmp_buf with OPCODES_SIGJMP_BUF.
	(fetch_data): Replace longjmp with OPCODES_SIGLONGJMP.
	(print_insn_h8500): Replace setjmp with OPCODES_SIGSETJMP.
	* i386-dis.c (dis_private): Replace jmp_buf with OPCODES_SIGJMP_BUF.
	(fetch_data): Replace longjmp with OPCODES_SIGLONGJMP.
	(print_insn): Replace setjmp with OPCODES_SIGSETJMP.
	* ns32k-dis.c (private): Replace jmp_buf with OPCODES_SIGJMP_BUF.
	(fetch_data): Replace longjmp with OPCODES_SIGLONGJMP.
	(print_insn_ns32k): Replace setjmp with OPCODES_SIGSETJMP.
	* sysdep.h (OPCODES_SIGJMP_BUF): New macro.
	(OPCODES_SIGSETJMP): Likewise.
	(OPCODES_SIGLONGJMP): Likewise.
	* vax-dis.c (private): Replace jmp_buf with OPCODES_SIGJMP_BUF.
	(fetch_data): Replace longjmp with OPCODES_SIGLONGJMP.
	(print_insn_vax): Replace setjmp with OPCODES_SIGSETJMP.
	* xtensa-dis.c (dis_private): Replace jmp_buf with
	OPCODES_SIGJMP_BUF.
	(fetch_data): Replace longjmp with OPCODES_SIGLONGJMP.
	(print_insn_xtensa): Replace setjmp with OPCODES_SIGSETJMP.
	* z8k-dis.c(instr_data_s): Replace jmp_buf with OPCODES_SIGJMP_BUF.
	(fetch_data): Replace longjmp with OPCODES_SIGLONGJMP.
	(print_insn_z8k): Replace setjmp with OPCODES_SIGSETJMP.

1 files changed, 35 insertions, 0 deletions

diff --git a/opcodes/configure b/opcodes/configure
index afe0cd1..9379bbf 100755
--- a/opcodes/configure
+++ b/opcodes/configure
@@ -12207,6 +12207,41 @@ cat >>confdefs.h <<_ACEOF
 _ACEOF
 
 
+# Check if sigsetjmp is available.  Using AC_CHECK_FUNCS won't do
+# since sigsetjmp might only be defined as a macro.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sigsetjmp" >&5
+$as_echo_n "checking for sigsetjmp... " >&6; }
+if test "${gdb_cv_func_sigsetjmp+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <setjmp.h>
+
+int
+main ()
+{
+sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  bfd_cv_func_sigsetjmp=yes
+else
+  bfd_cv_func_sigsetjmp=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gdb_cv_func_sigsetjmp" >&5
+$as_echo "$gdb_cv_func_sigsetjmp" >&6; }
+if test $bfd_cv_func_sigsetjmp = yes; then
+
+$as_echo "#define HAVE_SIGSETJMP 1" >>confdefs.h
+
+fi
+
 cgen_maint=no
 cgendir='$(srcdir)/../cgen'