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Make lint happy.

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While here, make sure the top of stack is aligned properly.
This commit is contained in:
matt 2012-03-22 05:36:50 +00:00
parent 975bbee604
commit 3fb1a336a3
1 changed files with 12 additions and 9 deletions
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21
lib/libc/arch/powerpc/gen/_lwp.c
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@ -1,4 +1,4 @@
/* $NetBSD: _lwp.c,v 1.6 2011/03/12 07:55:09 matt Exp $ */
/* $NetBSD: _lwp.c,v 1.7 2012/03/22 05:36:50 matt Exp $ */
/*
* Copyright (c) 2001 Wasabi Systems, Inc.
@ -37,10 +37,11 @@
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: _lwp.c,v 1.6 2011/03/12 07:55:09 matt Exp $");
__RCSID("$NetBSD: _lwp.c,v 1.7 2012/03/22 05:36:50 matt Exp $");
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
#include <sys/param.h>
#include <sys/types.h>
#include <ucontext.h>
#include <lwp.h>
@ -50,7 +51,7 @@ void
_lwp_makecontext(ucontext_t *u, void (*start)(void *), void *arg,
void *tcb, caddr_t stack_base, size_t stack_size)
{
void **sp;
uintptr_t sp;
getcontext(u);
u->uc_link = NULL;
@ -58,12 +59,14 @@ _lwp_makecontext(ucontext_t *u, void (*start)(void *), void *arg,
u->uc_stack.ss_sp = stack_base;
u->uc_stack.ss_size = stack_size;
sp = (void **) (stack_base + stack_size);
sp = (uintptr_t)stack_base + stack_size;
sp -= STACK_ALIGNBYTES + 1;
sp &= ~STACK_ALIGNBYTES;
u->uc_mcontext.__gregs[3] = (int) arg; /* arg1 */
u->uc_mcontext.__gregs[1] = ((int) sp) - 12; /* stack */
u->uc_mcontext.__gregs[33] = (int) _lwp_exit; /* LR */
u->uc_mcontext.__gregs[34] = (int) start; /* PC */
u->uc_mcontext.__gregs[3] = (uintptr_t) arg; /* arg1 */
u->uc_mcontext.__gregs[1] = sp; /* stack */
u->uc_mcontext.__gregs[33] = (uintptr_t) _lwp_exit; /* LR */
u->uc_mcontext.__gregs[34] = (uintptr_t) start; /* PC */
u->uc_mcontext.__gregs[_REG_R2] =
(__greg_t)tcb + TLS_TP_OFFSET + sizeof(struct tls_tcb);
(uintptr_t)tcb + TLS_TP_OFFSET + sizeof(struct tls_tcb);
}