diff options
author | jake <jake@FreeBSD.org> | 2003-08-08 15:40:28 +0000 |
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committer | jake <jake@FreeBSD.org> | 2003-08-08 15:40:28 +0000 |
commit | 1cee0842b20a7ebe3bc95edbe01b79f98421e775 (patch) | |
tree | 26f9effbee15fb7599f7ff506ecae0e810f29bc4 | |
parent | 4f2610beb5b582c07dbdb8fd2adaea264cfb7c4d (diff) | |
download | FreeBSD-src-1cee0842b20a7ebe3bc95edbe01b79f98421e775.zip FreeBSD-src-1cee0842b20a7ebe3bc95edbe01b79f98421e775.tar.gz |
Implement signalcontext.
-rw-r--r-- | lib/libc/sparc64/gen/Makefile.inc | 4 | ||||
-rw-r--r-- | lib/libc/sparc64/gen/signalcontext.c | 76 |
2 files changed, 78 insertions, 2 deletions
diff --git a/lib/libc/sparc64/gen/Makefile.inc b/lib/libc/sparc64/gen/Makefile.inc index 85ecfbd..265f3c0 100644 --- a/lib/libc/sparc64/gen/Makefile.inc +++ b/lib/libc/sparc64/gen/Makefile.inc @@ -2,5 +2,5 @@ SRCS+= _ctx_start.S _setjmp.S fabs.S fixunsdfsi.S flt_rounds.c fpgetmask.c \ fpgetround.c fpgetsticky.c fpsetmask.c fpsetround.c fpsetsticky.c \ - frexp.c infinity.c isinf.c ldexp.c makecontext.c modf.S setjmp.S \ - sigsetjmp.S + frexp.c infinity.c isinf.c ldexp.c makecontext.c modf.S \ + signalcontext.c setjmp.S sigsetjmp.S diff --git a/lib/libc/sparc64/gen/signalcontext.c b/lib/libc/sparc64/gen/signalcontext.c new file mode 100644 index 0000000..f47e81c --- /dev/null +++ b/lib/libc/sparc64/gen/signalcontext.c @@ -0,0 +1,76 @@ +/*- + * Copyright (c) 2003 Jake Burkholder. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/signal.h> +#include <sys/ucontext.h> + +#include <machine/frame.h> +#include <machine/sigframe.h> + +#include <errno.h> +#include <stdarg.h> +#include <stdlib.h> +#include <unistd.h> + +__weak_reference(__signalcontext, signalcontext); + +extern void _ctx_start(void); + +int +__signalcontext(ucontext_t *ucp, int sig, __sighandler_t *func) +{ + struct sigframe *sfp; + struct frame *fp; + mcontext_t *mc; + + mc = &ucp->uc_mcontext; + sfp = (struct sigframe *)(mc->mc_sp + SPOFF) - 1; + fp = (struct frame *)sfp - 1; + + bzero(fp, sizeof(*fp)); + + bzero(sfp, sizeof(*sfp)); + bcopy(ucp, &sfp->sf_uc, sizeof(*ucp)); + sfp->sf_si.si_signo = sig; + + mc->mc_global[1] = (uint64_t)func; + mc->mc_global[2] = (uint64_t)ucp; + mc->mc_out[0] = sig; + mc->mc_out[1] = (uint64_t)&sfp->sf_si; + mc->mc_out[2] = (uint64_t)&sfp->sf_uc; + mc->mc_out[6] = (uint64_t)fp - SPOFF; + mc->mc_tnpc = (uint64_t)_ctx_start + 4; + mc->mc_tpc = (uint64_t)_ctx_start; + + ucp->uc_link = &sfp->sf_uc; + sigdelset(&ucp->uc_sigmask, sig); + + return (0); +} |