move *longjmp related prototypes to setjmp.h

Provide common prototypes for __longjmp, __libc_longjmp, __libc_siglongjmp
_longjmp_unwind, __libc_unwind_longjmp in setjmp.h in preparation for use in LT new
Add __longjmp to h8300 and i960
Make common longjmp.c good for NPTL
Guard _longjmp_unwind use in sh's longjmp.c for NPTL (I think sh could use the common one)
Remove unneeded attribute_noreturn, prototype provides it already

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

4 files changed, 53 insertions, 9 deletions

diff --git a/libc/sysdeps/linux/common/longjmp.c b/libc/sysdeps/linux/common/longjmp.c
index f3448bc6f..e9fee84ec 100644
--- a/libc/sysdeps/linux/common/longjmp.c
+++ b/libc/sysdeps/linux/common/longjmp.c
@@ -20,15 +20,6 @@
 #include <setjmp.h>
 #include <signal.h>
 
-
-extern void __longjmp (__jmp_buf __env, int __val) attribute_noreturn;
-libc_hidden_proto(__longjmp)
-
-#ifdef __UCLIBC_HAS_THREADS_NATIVE__
-extern void _longjmp_unwind (jmp_buf env, int val);
-#endif
-
-extern __typeof(longjmp) __libc_longjmp attribute_noreturn;
 /* Set the signal mask to the one specified in ENV, and jump
    to the position specified in ENV, causing the setjmp
    call there to return VAL, or 1 if VAL is 0.  */
diff --git a/libc/sysdeps/linux/h8300/__longjmp.S b/libc/sysdeps/linux/h8300/__longjmp.S
index 5cffa3e5f..eb433df23 100644
--- a/libc/sysdeps/linux/h8300/__longjmp.S
+++ b/libc/sysdeps/linux/h8300/__longjmp.S
@@ -20,3 +20,5 @@ ___longjmp:
 	mov.l	@er0+,er3	; return PC
 	adds	#4,sp		; adjust return stack
 	jmp	@er3
+
+libc_hidden_def(__longjmp)
diff --git a/libc/sysdeps/linux/i960/setjmp.S b/libc/sysdeps/linux/i960/setjmp.S
index 2133ef557..2525f55d3 100644
--- a/libc/sysdeps/linux/i960/setjmp.S
+++ b/libc/sysdeps/linux/i960/setjmp.S
@@ -122,3 +122,5 @@ ___longjmp:
 	mov	1, g0		/* return 1 by default */
 0:
 	ret			/* return to caller of __sigsetjmp */
+
+libc_hidden_def(__longjmp)
diff --git a/libc/sysdeps/linux/sh/longjmp.c b/libc/sysdeps/linux/sh/longjmp.c
new file mode 100644
index 000000000..e410f054f
--- /dev/null
+++ b/libc/sysdeps/linux/sh/longjmp.c
@@ -0,0 +1,49 @@
+/* Copyright (C) 1991, 92, 94, 95, 97, 98, 2000 Free Software Foundation, Inc.
+   Copyright (C) 2001 Hewlett-Packard Australia
+
+ This program is free software; you can redistribute it and/or modify it under
+ the terms of the GNU Library General Public License as published by the Free
+ Software Foundation; either version 2 of the License, or (at your option) any
+ later version.
+
+ This program 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 Library General Public License for more
+ details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this program; if not, write to the Free Software Foundation, Inc.,
+ 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+ Derived in part from the Linux-8086 C library, the GNU C Library, and several
+ other sundry sources.  Files within this library are copyright by their
+ respective copyright holders.
+*/
+
+#include <stddef.h>
+#include <setjmp.h>
+#include <signal.h>
+
+/* Set the signal mask to the one specified in ENV, and jump
+   to the position specified in ENV, causing the setjmp
+   call there to return VAL, or 1 if VAL is 0.  */
+void __libc_siglongjmp (sigjmp_buf env, int val)
+{
+#ifdef __UCLIBC_HAS_THREADS_NATIVE__
+  /* Perform any cleanups needed by the frames being unwound.  */
+  _longjmp_unwind (env, val);
+#endif
+
+  if (env[0].__mask_was_saved)
+    /* Restore the saved signal mask.  */
+    (void) sigprocmask (SIG_SETMASK, &env[0].__saved_mask,
+			  (sigset_t *) NULL);
+
+  /* Call the machine-dependent function to restore machine state.  */
+  __longjmp ((char *) env[0].__jmpbuf, val ?: 1);
+}
+
+__asm__(".weak longjmp; longjmp = __libc_siglongjmp");
+__asm__(".weak _longjmp; _longjmp = __libc_siglongjmp");
+__asm__(".weak siglongjmp; siglongjmp = __libc_siglongjmp");
+strong_alias(__libc_siglongjmp, __libc_longjmp)