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/*
* Port of uClibc for TMS320C6000 DSP architecture
* Copyright (C) 2004, 2011 Texas Instruments Incorporated
* Author of TMS320C6000 port: Aurelien Jacquiot
*
* Use clone syscall: Mark Salter <msalter@redhat.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Library General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program 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 Library General Public License
* for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this program; see the file COPYING.LIB. If not, see
* <http://www.gnu.org/licenses/>.
*/
#define __ASSEMBLY__
#include <asm/errno.h>
#include <sys/syscall.h>
#include <linux/sched.h>
#include <asm/signal.h>
#define CLONE_FLAGS (CLONE_VFORK | CLONE_VM | SIGCHLD)
.global __vfork
__vfork:
MVK .S2 SYS_clone,B0
|| MVKL .S1 CLONE_FLAGS,A4
MVKH .S1 CLONE_FLAGS,A4
|| MVK .L2 0,B4
#ifndef _TMS320C6400_PLUS
MVC .S2 CSR,B2
CLR .S2 B2,0,0,B1
MVC .S2 B1,CSR
MVC .S2 IFR,B1
SET .S2 B1,6,6,B1
MVC .S2 B1,ISR
MVC .S2 B2,CSR
NOP
#else
SWE
#endif
MVK .S2 -4096,B4
CMPGTU .L2X B4,A4,B2 ; check error
[B2] BNOP .S2 B3,5
NEG .S1 A4,A4
STW .D2T1 A4,*B15--[2]
STW .D2T2 B3,*+B15[1]
CALLP .S2 __errno_location,B3
LDW .D2T2 *+B15[1],B3
LDW .D2T1 *++B15[2],A5
NOP 3
BNOP .S2 B3,3
STW .D1T1 A5,*A4
MVK .L1 -1,A4
weak_alias(__vfork,vfork)
libc_hidden_weak(vfork)
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