diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/hppa/makecontext.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/hppa/makecontext.c | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/sysdeps/unix/sysv/linux/hppa/makecontext.c b/sysdeps/unix/sysv/linux/hppa/makecontext.c deleted file mode 100644 index 9b02e49608..0000000000 --- a/sysdeps/unix/sysv/linux/hppa/makecontext.c +++ /dev/null @@ -1,99 +0,0 @@ -/* Create new context. - Copyright (C) 2008-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Helge Deller <deller@gmx.de>, 2008. - - 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 <libintl.h> -#include <stdarg.h> -#include <stdio.h> -#include <stdlib.h> -#include <sysdep.h> -#include <ucontext.h> - -/* POSIX only supports integer arguments. */ - -/* Stack must be 64-byte aligned at all times. */ -#define STACK_ALIGN 64 -/* Size of frame marker in unsigned long words. */ -#define FRAME_SIZE_UL 8 -/* Size of frame marker in bytes. */ -#define FRAME_SIZE_BYTES (8 * sizeof(unsigned long)) -/* Size of X arguments in bytes. */ -#define ARGS(x) (x * sizeof(unsigned long)) - -void -__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...) -{ - unsigned long *sp, *osp; - va_list ap; - int i; - - /* Create a 64-byte aligned frame to store args. Use ss_sp if - it is available, otherwise be robust and use the currently - saved stack pointer. */ - if (ucp->uc_stack.ss_sp && ucp->uc_stack.ss_size) - osp = (unsigned long *)ucp->uc_stack.ss_sp; - else - osp = (unsigned long *)ucp->uc_mcontext.sc_gr[30]; - - sp = (unsigned long *)((((unsigned long) osp) - + FRAME_SIZE_BYTES + ARGS(argc) + STACK_ALIGN) - & ~(STACK_ALIGN - 1)); - - /* Use new frame. */ - ucp->uc_mcontext.sc_gr[30] = ((unsigned long) sp); - - /* Finish frame setup. */ - if (ucp->uc_link) - { - /* Returning to the next context and next frame. */ - sp[-4/sizeof(unsigned long)] = ucp->uc_link->uc_mcontext.sc_gr[30]; - sp[-20/sizeof(unsigned long)] = ucp->uc_link->uc_mcontext.sc_gr[2]; - } - else - { - /* This is the main context. No frame marker, and no return address. */ - sp[-4/sizeof(unsigned long)] = 0x0; - sp[-20/sizeof(unsigned long)] = 0x0; - } - - /* Store address to jump to. */ - ucp->uc_mcontext.sc_gr[2] = (unsigned long) func; - - /* Process arguments. */ - va_start (ap, argc); - for (i = 0; i < argc; ++i) - { - if (i < 4) - { - ucp->uc_mcontext.sc_gr[26-i] = va_arg (ap, int); - continue; - } - - if ((i < 8) && (sizeof(unsigned long) == 8)) - { - /* 64bit: r19-r22 are arg7-arg4. */ - ucp->uc_mcontext.sc_gr[22+4-i] = va_arg (ap, int); - continue; - } - - /* All other arguments go on the stack. */ - sp[-1 * (FRAME_SIZE_UL + 1 + i)] = va_arg (ap, int); - } - va_end (ap); -} -weak_alias(__makecontext, makecontext) |