diff options
Diffstat (limited to 'sysdeps/mach/hurd/powerpc/sigreturn.c')
| -rw-r--r-- | sysdeps/mach/hurd/powerpc/sigreturn.c | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/sysdeps/mach/hurd/powerpc/sigreturn.c b/sysdeps/mach/hurd/powerpc/sigreturn.c deleted file mode 100644 index 18107090b9..0000000000 --- a/sysdeps/mach/hurd/powerpc/sigreturn.c +++ /dev/null @@ -1,185 +0,0 @@ -/* Return from signal handler for Hurd. PowerPC version. - Copyright (C) 1996,97,98,2001 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, see - <http://www.gnu.org/licenses/>. */ - -#include <hurd.h> -#include <hurd/signal.h> -#include <hurd/threadvar.h> -#include <stdlib.h> - -int -__sigreturn (struct sigcontext *scp) -{ - struct hurd_sigstate *ss; - mach_port_t *reply_port; - - if (scp == NULL || (scp->sc_mask & _SIG_CANT_MASK)) - { - errno = EINVAL; - return -1; - } - - ss = _hurd_self_sigstate (); - __spin_lock (&ss->lock); - - /* Restore the set of blocked signals, and the intr_port slot. */ - ss->blocked = scp->sc_mask; - ss->intr_port = scp->sc_intr_port; - - /* Check for pending signals that were blocked by the old set. */ - if (ss->pending & ~ss->blocked) - { - /* There are pending signals that just became unblocked. Wake up the - signal thread to deliver them. But first, squirrel away SCP where - the signal thread will notice it if it runs another handler, and - arrange to have us called over again in the new reality. */ - ss->context = scp; - __spin_unlock (&ss->lock); - __msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ()); - /* If a pending signal was handled, sig_post never returned. */ - __spin_lock (&ss->lock); - ss->context = NULL; - } - - if (scp->sc_onstack) - { - ss->sigaltstack.ss_flags &= ~SS_ONSTACK; /* XXX threadvars */ - /* XXX cannot unlock until off sigstack */ - abort (); - } - else - __spin_unlock (&ss->lock); - - /* Destroy the MiG reply port used by the signal handler, and restore the - reply port in use by the thread when interrupted. */ - reply_port = - (mach_port_t *) __hurd_threadvar_location (_HURD_THREADVAR_MIG_REPLY); - if (*reply_port) - { - mach_port_t port = *reply_port; - - /* Assigning MACH_PORT_DEAD here tells libc's mig_get_reply_port not to - get another reply port, but avoids mig_dealloc_reply_port trying to - deallocate it after the receive fails (which it will, because the - reply port will be bogus, whether we do this or not). */ - *reply_port = MACH_PORT_DEAD; - - __mach_port_destroy (__mach_task_self (), port); - } - *reply_port = scp->sc_reply_port; - - /* Restore FPU state. */ -#define restore_fpr(n) \ - asm volatile ("lfd " #n ",%0(31)" : : "i" (n * 4)) - - asm volatile ("mr 31,%0" : : "r" (scp->sc_fprs)); - - /* Restore the floating-point control/status register. */ - asm volatile ("lfd 0,256(31)"); - asm volatile ("mtfsf 0xff,0"); - - /* Restore floating-point registers. */ - restore_fpr (0); - restore_fpr (1); - restore_fpr (2); - restore_fpr (3); - restore_fpr (4); - restore_fpr (5); - restore_fpr (6); - restore_fpr (7); - restore_fpr (8); - restore_fpr (9); - restore_fpr (10); - restore_fpr (11); - restore_fpr (12); - restore_fpr (13); - restore_fpr (14); - restore_fpr (15); - restore_fpr (16); - restore_fpr (17); - restore_fpr (18); - restore_fpr (19); - restore_fpr (20); - restore_fpr (21); - restore_fpr (22); - restore_fpr (23); - restore_fpr (24); - restore_fpr (25); - restore_fpr (26); - restore_fpr (27); - restore_fpr (28); - restore_fpr (29); - restore_fpr (30); - restore_fpr (31); - - /* Load all the registers from the sigcontext. */ -#define restore_gpr(n) \ - asm volatile ("lwz " #n ",%0(31)" : : "i" (n * 4)) - - asm volatile ("addi 31,31,-188"); /* r31 = scp->gprs */ - - /* Restore the special purpose registers. */ - asm volatile ("lwz 0,128(31); mtcr 0"); - asm volatile ("lwz 0,132(31); mtxer 0"); - asm volatile ("lwz 0,136(31); mtlr 0"); - asm volatile ("lwz 0,-8(31); mtctr 0"); /* XXX this is the PC */ -#if 0 - asm volatile ("lwz 0,144(31); mtmq %0"); /* PPC601 only */ -#endif - - /* Restore the normal registers. */ - restore_gpr (0); - restore_gpr (1); - restore_gpr (2); - restore_gpr (3); - restore_gpr (4); - restore_gpr (5); - restore_gpr (6); - restore_gpr (7); - restore_gpr (8); - restore_gpr (9); - restore_gpr (10); - restore_gpr (11); - restore_gpr (12); - restore_gpr (13); - restore_gpr (14); - restore_gpr (15); - restore_gpr (16); - restore_gpr (17); - restore_gpr (18); - restore_gpr (19); - restore_gpr (20); - restore_gpr (21); - restore_gpr (22); - restore_gpr (23); - restore_gpr (24); - restore_gpr (25); - restore_gpr (26); - restore_gpr (27); - restore_gpr (28); - restore_gpr (29); - restore_gpr (30); - restore_gpr (31); - - /* Return. */ - asm volatile ("bctr"); /* XXX CTR is not restored! */ - - /* NOTREACHED */ - return -1; -} - -weak_alias (__sigreturn, sigreturn) |