2002-04-08 Jeff Johnston <jjohnstn@redhat.com>

* libc/sys/linux/include/setjmp.h: Add sigjmp_buf type,
        siglongjmp prototype, and sigsetjmp macro definition.
        * libc/sys/linux/siglongjmp.c: New file.
        * libc/sys/linux/Makefile.am: Add support for siglongjmp.
        * libc/sys/linux/Makefile.in: Regenerated.

newlib/ChangeLog

@@ -1,3 +1,11 @@
+2002-04-08  Jeff Johnston  <jjohnstn@redhat.com>
+
+	* libc/sys/linux/include/setjmp.h: Add sigjmp_buf type,
+	siglongjmp prototype, and sigsetjmp macro definition.
+	* libc/sys/linux/siglongjmp.c: New file.
+	* libc/sys/linux/Makefile.am: Add support for siglongjmp.
+	* libc/sys/linux/Makefile.in: Regenerated.
+
 2002-04-04  Jeff Johnston  <jjohnstn@redhat.com>
 
 	* Makefile.am: Add support for installing crt1.o if one exists.

newlib/libc/sys/linux/Makefile.am

@@ -9,7 +9,8 @@ SUBLIBS = $(LINUX_MACH_LIB)
 
 LIB_SOURCES = \
 	brk.c getoptlong.c ids.c inode.c io.c linux.c process.c realpath.c \
-	select.c signal.c socket.c sleep.c stack.c sysconf.c systat.c termios.c time.c \
+	select.c signal.c siglongjmp.c socket.c sleep.c stack.c \
+	sysconf.c systat.c termios.c time.c \
 	usleep.c wait.c
 
 # This will handle both /usr/src/linux-2.4/include/asm/signal.h (in Red Hat Linux 7.1)

newlib/libc/sys/linux/Makefile.in

@@ -94,7 +94,8 @@ SUBLIBS = $(LINUX_MACH_LIB)
 
 LIB_SOURCES = \
 	brk.c getoptlong.c ids.c inode.c io.c linux.c process.c realpath.c \
-	select.c signal.c socket.c sleep.c stack.c sysconf.c systat.c termios.c time.c \
+	select.c signal.c siglongjmp.c socket.c sleep.c stack.c \
+	sysconf.c systat.c termios.c time.c \
 	usleep.c wait.c
 
 
@@ -127,16 +128,16 @@ CPPFLAGS = @CPPFLAGS@
 LIBS = @LIBS@
 @USE_LIBTOOL_FALSE@lib_a_OBJECTS =  brk.o getoptlong.o ids.o inode.o \
 @USE_LIBTOOL_FALSE@io.o linux.o process.o realpath.o select.o signal.o \
-@USE_LIBTOOL_FALSE@socket.o sleep.o stack.o sysconf.o systat.o \
-@USE_LIBTOOL_FALSE@termios.o time.o usleep.o wait.o
+@USE_LIBTOOL_FALSE@siglongjmp.o socket.o sleep.o stack.o sysconf.o \
+@USE_LIBTOOL_FALSE@systat.o termios.o time.o usleep.o wait.o
 LTLIBRARIES =  $(noinst_LTLIBRARIES)
 
 @USE_LIBTOOL_TRUE@liblinux_la_DEPENDENCIES = 
 @USE_LIBTOOL_TRUE@liblinux_la_OBJECTS =  brk.lo getoptlong.lo ids.lo \
 @USE_LIBTOOL_TRUE@inode.lo io.lo linux.lo process.lo realpath.lo \
-@USE_LIBTOOL_TRUE@select.lo signal.lo socket.lo sleep.lo stack.lo \
-@USE_LIBTOOL_TRUE@sysconf.lo systat.lo termios.lo time.lo usleep.lo \
-@USE_LIBTOOL_TRUE@wait.lo
+@USE_LIBTOOL_TRUE@select.lo signal.lo siglongjmp.lo socket.lo sleep.lo \
+@USE_LIBTOOL_TRUE@stack.lo sysconf.lo systat.lo termios.lo time.lo \
+@USE_LIBTOOL_TRUE@usleep.lo wait.lo
 CFLAGS = @CFLAGS@
 COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
 LTCOMPILE = $(LIBTOOL) --mode=compile $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)

newlib/libc/sys/linux/include/setjmp.h

@@ -0,0 +1,39 @@
+/*
+	setjmp.h
+	stubs for future use.
+*/
+
+#ifndef _SETJMP_H_
+#ifdef __cplusplus
+extern "C" {
+#endif
+#define _SETJMP_H_
+
+#include "_ansi.h"
+#include <machine/setjmp.h>
+#include <signal.h> /* for sigset_t and sigprocmask */
+
+typedef struct __sigjmpbuf
+{
+  jmp_buf __buf;
+  int __is_mask_saved;
+  sigset_t __saved_mask;
+} sigjmp_buf;
+
+void	_EXFUN(longjmp,(jmp_buf __jmpb, int __retval));
+int	_EXFUN(setjmp,(jmp_buf __jmpb));
+void	_EXFUN(siglongjmp,(sigjmp_buf __jmpb, int __retval));
+int	_EXFUN(sigsetjmp,(sigjmp_buf __jmpb, int __savemask));
+
+/* sigsetjmp is implemented as macro using setjmp */
+
+#define sigsetjmp(__jmpb, __savemask) \
+                 ( __jmpb.__is_mask_saved = __savemask && \
+                   (sigprocmask (SIG_BLOCK, NULL, &__jmpb.__saved_mask) == 0), \
+                    setjmp (__jmpb.__buf) )
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _SETJMP_H_ */
+

newlib/libc/sys/linux/siglongjmp.c

@@ -0,0 +1,16 @@
+/* libc/sys/linux/siglongjmp.c - siglongjmp function */
+
+/* Copyright 2002, Red Hat Inc. */
+
+
+#include <setjmp.h>
+#include <signal.h>
+
+void
+siglongjmp (sigjmp_buf env, int val)
+{
+  if (env.__is_mask_saved)
+    sigprocmask (SIG_SETMASK, &env.__saved_mask, NULL);
+
+  longjmp (env.__buf, val);
+}