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>

include/setjmp.h

@@ -113,4 +113,14 @@ extern void siglongjmp (sigjmp_buf __env, int __val)
 
 __END_DECLS
 
+#ifdef _LIBC
+extern void __longjmp(__jmp_buf __env, int __val) attribute_noreturn;
+libc_hidden_proto(__longjmp)
+extern __typeof(longjmp) __libc_longjmp attribute_noreturn;
+extern __typeof(siglongjmp) __libc_siglongjmp attribute_noreturn;
+extern void _longjmp_unwind(jmp_buf __env, int __val);
+/* We use the normal longjmp for unwinding */
+# define __libc_unwind_longjmp(buf, val) __libc_longjmp(buf, val)
+#endif
+
 #endif /* setjmp.h  */

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.  */

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)

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)

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)

libpthread/linuxthreads.old/ptlongjmp.c

@@ -20,11 +20,6 @@
 #include "internals.h"
 #include <bits/stackinfo.h>
 
-/* These functions are not declared anywhere since they shouldn't be
-   used at another place but here.  */
-extern __typeof(siglongjmp) __libc_siglongjmp attribute_noreturn;
-extern __typeof(longjmp) __libc_longjmp attribute_noreturn;
-
 static void pthread_cleanup_upto(__jmp_buf target)
 {
   pthread_descr self = thread_self();
@@ -58,13 +53,13 @@ static void pthread_cleanup_upto(__jmp_buf target)
     THREAD_SETMEM(self, p_in_sighandler, NULL);
 }
 
-void attribute_noreturn siglongjmp(sigjmp_buf env, int val)
+void siglongjmp(sigjmp_buf env, int val)
 {
   pthread_cleanup_upto(env->__jmpbuf);
   __libc_siglongjmp(env, val);
 }
 
-void attribute_noreturn longjmp(jmp_buf env, int val)
+void longjmp(jmp_buf env, int val)
 {
   pthread_cleanup_upto(env->__jmpbuf);
   __libc_longjmp(env, val);

libpthread/linuxthreads/sysdeps/pthread/ptlongjmp.c

@@ -19,13 +19,6 @@
 #include "pthread.h"
 #include "internals.h"
 
-/* These functions are not declared anywhere since they shouldn't be
-   used at another place but here.  */
-extern void __libc_siglongjmp (sigjmp_buf env, int val)
-     __attribute__ ((noreturn));
-extern void __libc_longjmp (sigjmp_buf env, int val)
-     __attribute__ ((noreturn));
-
 #ifdef SHARED
 void siglongjmp (sigjmp_buf env, int val)
 {

libpthread/nptl/sysdeps/alpha/jmpbuf-unwind.h

@@ -26,6 +26,3 @@
 
 #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
   ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_SP] - (_adj))
-
-/* We use the normal lobngjmp for unwinding.  */
-#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)

libpthread/nptl/sysdeps/arm/jmpbuf-unwind.h

@@ -31,6 +31,3 @@
 
 #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
   ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[__JMP_BUF_SP] - (_adj))
-
-/* We use the normal longjmp for unwinding.  */
-#define __libc_unwind_longjmp(buf, val) longjmp (buf, val)

libpthread/nptl/sysdeps/i386/jmpbuf-unwind.h

@@ -26,7 +26,3 @@
 
 #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
   ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_SP] - (_adj))
-
-/* We use the normal lobngjmp for unwinding.  */
-extern __typeof(longjmp) __libc_longjmp attribute_noreturn;
-#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)

libpthread/nptl/sysdeps/mips/jmpbuf-unwind.h

@@ -25,6 +25,3 @@
 
 #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
   ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[0].__sp - (_adj))
-
-/* We use the normal longjmp for unwinding.  */
-#define __libc_unwind_longjmp(buf, val) longjmp (buf, val)

libpthread/nptl/sysdeps/powerpc/jmpbuf-unwind.h

@@ -26,6 +26,3 @@
 
 #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
   ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_GPR1] - (_adj))
-
-/* We use the normal lobngjmp for unwinding.  */
-#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)

libpthread/nptl/sysdeps/sh/jmpbuf-unwind.h

@@ -26,8 +26,3 @@
 
 #define _JMPBUF_UNWINDS_ADJ(jmpbuf, address, adj) \
   ((uintptr_t) (address) - (adj) < (uintptr_t) (jmpbuf)[0].__regs[7] - (adj))
-
-extern __typeof(longjmp) __libc_longjmp attribute_noreturn;
-
-/* We use the normal lobngjmp for unwinding.  */
-#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)

libpthread/nptl/sysdeps/sparc/sparc32/jmpbuf-unwind.h

@@ -26,7 +26,3 @@
 
 #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
   ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_SP] - (_adj))
-
-/* We use the normal longjmp for unwinding.  */
-extern __typeof(longjmp) __libc_longjmp attribute_noreturn;
-#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)

libpthread/nptl/sysdeps/sparc/sparc64/jmpbuf-unwind.h

@@ -26,6 +26,3 @@
 
 #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
   ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_SP] - (_adj))
-
-/* We use the normal lobngjmp for unwinding.  */
-#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)

libpthread/nptl/sysdeps/unix/sysv/linux/jmp-unwind.c

@@ -25,7 +25,6 @@ extern void __pthread_cleanup_upto (__jmp_buf env, char *targetframe);
 #pragma weak __pthread_cleanup_upto
 
 
-void _longjmp_unwind (jmp_buf env, int val);
 void
 _longjmp_unwind (jmp_buf env, int val)
 {

libpthread/nptl/sysdeps/x86_64/jmpbuf-unwind.h

@@ -26,6 +26,3 @@
 
 #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
   ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_RSP] - (_adj))
-
-/* We use the normal lobngjmp for unwinding.  */
-#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)