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-rw-r--r--libc/sysdeps/linux/common/Makefile2
-rw-r--r--libc/sysdeps/linux/common/longjmp.c46
2 files changed, 47 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/common/Makefile b/libc/sysdeps/linux/common/Makefile
index d84648724..e4820e3f8 100644
--- a/libc/sysdeps/linux/common/Makefile
+++ b/libc/sysdeps/linux/common/Makefile
@@ -27,7 +27,7 @@ include $(TOPDIR)Rules.mak
CSRC= waitpid.c kernel_version.c statfix.c getdnnm.c gethstnm.c \
mkfifo.c setegid.c wait.c errno.c getpagesize.c seteuid.c \
wait3.c setpgrp.c getdtablesize.c create_module.c ptrace.c \
- cmsg_nxthdr.c open64.c statfix64.c statfs64.c
+ cmsg_nxthdr.c open64.c statfix64.c statfs64.c longjmp.c
ifneq ($(strip $(EXCLUDE_BRK)),true)
CSRC+=sbrk.c
endif
diff --git a/libc/sysdeps/linux/common/longjmp.c b/libc/sysdeps/linux/common/longjmp.c
new file mode 100644
index 000000000..95c7fef48
--- /dev/null
+++ b/libc/sysdeps/linux/common/longjmp.c
@@ -0,0 +1,46 @@
+/* Copyright (C) 1991, 92, 94, 95, 97, 98, 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#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)
+{
+#if 0
+ /* 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 (env[0].__jmpbuf, val ?: 1);
+}
+
+strong_alias (__libc_siglongjmp, __libc_longjmp)
+weak_alias (__libc_siglongjmp, _longjmp)
+weak_alias (__libc_siglongjmp, longjmp)
+weak_alias (__libc_siglongjmp, siglongjmp)