diff options
Diffstat (limited to 'lib/libc/mips/gen/makecontext.c')
| -rw-r--r-- | lib/libc/mips/gen/makecontext.c | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/lib/libc/mips/gen/makecontext.c b/lib/libc/mips/gen/makecontext.c deleted file mode 100644 index f2a826e..0000000 --- a/lib/libc/mips/gen/makecontext.c +++ /dev/null @@ -1,123 +0,0 @@ -/* $NetBSD: makecontext.c,v 1.5 2009/12/14 01:07:42 matt Exp $ */ - -/*- - * Copyright (c) 2001 The NetBSD Foundation, Inc. - * All rights reserved. - * - * This code is derived from software contributed to The NetBSD Foundation - * by Klaus Klein. - * - * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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("$FreeBSD$"); -#if defined(LIBC_SCCS) && !defined(lint) -__RCSID("$NetBSD: makecontext.c,v 1.5 2009/12/14 01:07:42 matt Exp $"); -#endif - -#include <sys/param.h> -#include <machine/regnum.h> - -#include <stdarg.h> -#include <stdlib.h> -#include <unistd.h> -#include <stdio.h> -#include <ucontext.h> - -__weak_reference(__makecontext, makecontext); - -void _ctx_done(ucontext_t *); -void _ctx_start(void); - -void -__makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...) -{ - mcontext_t *mc; - register_t *sp; - int i; - va_list ap; - - /* - * XXX/juli - * We need an mc_len or mc_flags like other architectures - * so that we can mark a context as invalid. Store it in - * mc->mc_regs[ZERO] perhaps? - */ - if (argc < 0 || argc > 6 || ucp == NULL || - ucp->uc_stack.ss_sp == NULL || - ucp->uc_stack.ss_size < MINSIGSTKSZ) - return; - mc = &ucp->uc_mcontext; - - sp = (register_t *) - ((uintptr_t)ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size); -#if defined(__mips_o32) || defined(__mips_o64) - sp -= (argc >= 4 ? argc : 4); /* Make room for >=4 arguments. */ - sp = (register_t *) - ((uintptr_t)sp & ~0x7); /* Align on double-word boundary. */ -#elif defined(__mips_n32) || defined(__mips_n64) - sp -= (argc > 8 ? argc - 8 : 0); /* Make room for > 8 arguments. */ - sp = (register_t *) - ((uintptr_t)sp & ~0xf); /* Align on quad-word boundary. */ -#endif - - mc->mc_regs[SP] = (intptr_t)sp; - mc->mc_regs[S0] = (intptr_t)ucp; - mc->mc_regs[T9] = (intptr_t)func; - mc->mc_pc = (intptr_t)_ctx_start; - - /* Construct argument list. */ - va_start(ap, argc); -#if defined(__mips_o32) || defined(__mips_o64) - /* Up to the first four arguments are passed in $a0-3. */ - for (i = 0; i < argc && i < 4; i++) - /* LINTED register_t is safe */ - mc->mc_regs[A0 + i] = va_arg(ap, register_t); - /* Pass remaining arguments on the stack above the $a0-3 gap. */ - sp += i; -#endif -#if defined(__mips_n32) || defined(__mips_n64) - /* Up to the first 8 arguments are passed in $a0-7. */ - for (i = 0; i < argc && i < 8; i++) - /* LINTED register_t is safe */ - mc->mc_regs[A0 + i] = va_arg(ap, register_t); - /* Pass remaining arguments on the stack above the $a0-3 gap. */ -#endif - /* Pass remaining arguments on the stack above the $a0-3 gap. */ - for (; i < argc; i++) - /* LINTED uintptr_t is safe */ - *sp++ = va_arg(ap, register_t); - va_end(ap); -} - -void -_ctx_done(ucontext_t *ucp) -{ - - if (ucp->uc_link == NULL) - exit(0); - else { - setcontext((const ucontext_t *)ucp->uc_link); - abort(); - } -} |
