From 0b44a0315b47dd8eced9f3b7f31580cf14bbfc01 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Sat, 12 Feb 2011 00:22:29 -0500 Subject: initial check-in, version 0.5.0 --- src/signal/sigsetjmp.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 src/signal/sigsetjmp.c (limited to 'src/signal/sigsetjmp.c') diff --git a/src/signal/sigsetjmp.c b/src/signal/sigsetjmp.c new file mode 100644 index 00000000..a6667a27 --- /dev/null +++ b/src/signal/sigsetjmp.c @@ -0,0 +1,17 @@ +#include +#include +#include + +/* !!! This function will not work unless the compiler performs + * tail call optimization. Machine-specific asm versions should + * be created instead even though the workaround (tail call) + * is entirely non-machine-specific... */ + +int sigsetjmp(sigjmp_buf buf, int save) +{ + long *flag = buf + sizeof(jmp_buf)/sizeof(long); + sigset_t *mask = (void *)(flag + 1); + if ((*flag = save)) + sigprocmask (SIG_SETMASK, NULL, mask); + return setjmp((void *)buf); +} -- cgit v1.2.1