diff options
Diffstat (limited to 'lib/libc/powerpc64/gen/signalcontext.c')
| -rw-r--r-- | lib/libc/powerpc64/gen/signalcontext.c | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/lib/libc/powerpc64/gen/signalcontext.c b/lib/libc/powerpc64/gen/signalcontext.c deleted file mode 100644 index fad9ee1..0000000 --- a/lib/libc/powerpc64/gen/signalcontext.c +++ /dev/null @@ -1,103 +0,0 @@ -/* - * Copyright (c) 2004 Marcel Moolenaar, Peter Grehan - * 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 ``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 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/ucontext.h> -#include <signal.h> -#include <stdlib.h> -#include <strings.h> - -typedef void (*handler_t)(uint32_t, uint32_t, uint32_t); - -/* Prototypes */ -static void ctx_wrapper(ucontext_t *ucp, handler_t func, uint32_t sig, - uint32_t sig_si, uint32_t sig_uc); - -__weak_reference(__signalcontext, signalcontext); - -int -__signalcontext(ucontext_t *ucp, int sig, __sighandler_t *func) -{ - siginfo_t *sig_si; - ucontext_t *sig_uc; - uintptr_t sp; - - /* Bail out if we don't have a valid ucontext pointer. */ - if (ucp == NULL) - abort(); - - /* - * Build a 16-byte-aligned signal frame - */ - sp = (ucp->uc_mcontext.mc_gpr[1] - sizeof(ucontext_t)) & ~15UL; - sig_uc = (ucontext_t *)sp; - bcopy(ucp, sig_uc, sizeof(*sig_uc)); - sp = (sp - sizeof(siginfo_t)) & ~15UL; - sig_si = (siginfo_t *)sp; - bzero(sig_si, sizeof(*sig_si)); - sig_si->si_signo = sig; - - /* - * Subtract 48 bytes from stack to allow for frameptr - */ - sp -= 6*sizeof(uint64_t); - sp &= ~15UL; - - /* - * Setup the ucontext of the signal handler. - */ - bzero(&ucp->uc_mcontext, sizeof(ucp->uc_mcontext)); - ucp->uc_link = sig_uc; - sigdelset(&ucp->uc_sigmask, sig); - - ucp->uc_mcontext.mc_vers = _MC_VERSION; - ucp->uc_mcontext.mc_len = sizeof(struct __mcontext); - ucp->uc_mcontext.mc_srr0 = (uint64_t) ctx_wrapper; - ucp->uc_mcontext.mc_gpr[1] = (uint64_t) sp; - ucp->uc_mcontext.mc_gpr[3] = (uint64_t) func; - ucp->uc_mcontext.mc_gpr[4] = (uint64_t) sig; - ucp->uc_mcontext.mc_gpr[5] = (uint64_t) sig_si; - ucp->uc_mcontext.mc_gpr[6] = (uint64_t) sig_uc; - - return (0); -} - -static void -ctx_wrapper(ucontext_t *ucp, handler_t func, uint32_t sig, uint32_t sig_si, - uint32_t sig_uc) -{ - - (*func)(sig, sig_si, sig_uc); - if (ucp->uc_link == NULL) - exit(0); - setcontext((const ucontext_t *)ucp->uc_link); - /* should never get here */ - abort(); - /* NOTREACHED */ -} |
