Reduce diff to makecontext.
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parent
061a87b549
commit
c1faa994fd
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@ -1,4 +1,4 @@
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/* $NetBSD: _lwp.c,v 1.4 2008/04/28 20:22:58 martin Exp $ */
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/* $NetBSD: _lwp.c,v 1.5 2009/07/01 16:54:41 joerg Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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@ -31,7 +31,7 @@
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: _lwp.c,v 1.4 2008/04/28 20:22:58 martin Exp $");
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__RCSID("$NetBSD: _lwp.c,v 1.5 2009/07/01 16:54:41 joerg Exp $");
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#endif /* LIBC_SCCS and not lint */
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#include "namespace.h"
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@ -45,6 +45,7 @@ void
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_lwp_makecontext(ucontext_t *u, void (*start)(void *),
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void *arg, void *private, caddr_t stack_base, size_t stack_size)
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{
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__greg_t *gr = u->uc_mcontext.__gregs;
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void **sp;
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getcontext(u);
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@ -54,16 +55,16 @@ _lwp_makecontext(ucontext_t *u, void (*start)(void *),
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u->uc_stack.ss_size = stack_size;
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/* LINTED uintptr_t is safe */
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u->uc_mcontext.__gregs[_REG_RIP] = (uintptr_t)start;
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gr[_REG_RIP] = (uintptr_t)start;
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sp = (void **) (((uintptr_t)(stack_base + stack_size) & ~15) - 8);
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/* LINTED __greg_t is safe */
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u->uc_mcontext.__gregs[_REG_RDI] = (__greg_t)arg;
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gr[_REG_RDI] = (__greg_t)arg;
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*--sp = (void *) _lwp_exit;
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/* LINTED uintptr_t is safe */
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u->uc_mcontext.__gregs[_REG_URSP] = (uintptr_t) sp;
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gr[_REG_URSP] = (uintptr_t) sp;
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/* LINTED private is currently unused */
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}
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