diff options
Diffstat (limited to 'ports/sysdeps/unix/sysv/linux/aarch64/makecontext.c')
-rw-r--r-- | ports/sysdeps/unix/sysv/linux/aarch64/makecontext.c | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/aarch64/makecontext.c b/ports/sysdeps/unix/sysv/linux/aarch64/makecontext.c deleted file mode 100644 index 806eab2cf9..0000000000 --- a/ports/sysdeps/unix/sysv/linux/aarch64/makecontext.c +++ /dev/null @@ -1,74 +0,0 @@ -/* Create new context. - Copyright (C) 2002-2014 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 <sysdep.h> -#include <stdarg.h> -#include <stdint.h> -#include <ucontext.h> - - -/* makecontext sets up a stack and the registers for the - user context. The stack looks like this: - - +-----------------------+ - | padding as required | - +-----------------------+ - sp -> | parameter 7-n | - +-----------------------+ - - The registers are set up like this: - %x0 .. %x7: parameter 1 to 8 - %x19 : uc_link - %sp : stack pointer. -*/ - -void -__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...) -{ - extern void __startcontext (void); - unsigned long int *sp; - va_list ap; - int i; - - sp = (unsigned long int *) - ((uintptr_t) ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size); - - /* Allocate stack arguments. */ - sp -= argc < 8 ? 0 : argc - 8; - - /* Keep the stack aligned. */ - sp = (unsigned long int *) (((uintptr_t) sp) & -16L); - - ucp->uc_mcontext.regs[19] = (uintptr_t) ucp->uc_link; - ucp->uc_mcontext.sp = (uintptr_t) sp; - ucp->uc_mcontext.pc = (uintptr_t) func; - ucp->uc_mcontext.regs[29] = (uintptr_t) 0; - ucp->uc_mcontext.regs[30] = (uintptr_t) &__startcontext; - - va_start (ap, argc); - for (i = 0; i < argc; ++i) - if (i < 8) - ucp->uc_mcontext.regs[i] = va_arg (ap, unsigned long int); - else - sp[i - 8] = va_arg (ap, unsigned long int); - - va_end (ap); -} - -weak_alias (__makecontext, makecontext) |