/* $NetBSD: mcontext.h,v 1.2 2018/02/15 15:53:56 kamil Exp $ */
/*-
* Copyright (c) 2014 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matt Thomas of 3am Software Foundry.
*
* 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.
*/
#ifndef _OR1K_MCONTEXT_H_
#define _OR1K_MCONTEXT_H_
/*
*/
#define _NGREG 33 /* GR1-31, FPCSR */
typedef __int64_t __greg_t;
typedef __greg_t __gregset_t[_NGREG];
#define _REG_R1 0
#define _REG_R2 1
#define _REG_R3 2
#define _REG_R4 3
#define _REG_R5 4
#define _REG_R6 5
#define _REG_R7 6
#define _REG_R8 7
#define _REG_R9 8
#define _REG_R10 9
#define _REG_R11 10
#define _REG_R12 11
#define _REG_R13 12
#define _REG_R14 13
#define _REG_R15 14
#define _REG_R16 15
#define _REG_R17 16
#define _REG_R18 17
#define _REG_R19 18
#define _REG_R20 19
#define _REG_R21 20
#define _REG_R22 21
#define _REG_R23 22
#define _REG_R24 23
#define _REG_R25 24
#define _REG_R26 25
#define _REG_R27 26
#define _REG_R28 27
#define _REG_R29 28
#define _REG_R30 29
#define _REG_R31 30
#define _REG_PC 31
#define _REG_FPCSR 32
#define _REG_SP _REG_R1
#define _REG_LR _REG_R9
#define _REG_TP _REG_R10
#define _REG_RV _REG_R11
#define _REG_GP _REG_R16
typedef struct {
__gregset_t __gregs; /* General Purpose Register set */
__greg_t __spare[8]; /* future proof */
} mcontext_t;
/* Machine-dependent uc_flags */
#define _UC_TLSBASE 0x00080000 /* see <sys/ucontext.h> */
#define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP])
#define _UC_MACHINE_FP(uc) ((uc)->uc_mcontext.__gregs[_REG_R2])
#define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC])
#define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_RV])
#define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc)
#if defined(_RTLD_SOURCE) || defined(_LIBC_SOURCE) || defined(__LIBPTHREAD_SOURCE__)
#include <sys/tls.h>
/*
* On OpenRISC 1000, since displacements are signed 16-bit values, the TCB
* Pointer is biased by 0x7000 + sizeof(tcb) so that first thread datum can be
* addressed by -28672 thereby leaving 60KB available for use as thread data.
*/
#define TLS_TP_OFFSET 0x7000
#define TLS_DTV_OFFSET 0x8000
__CTASSERT(TLS_TP_OFFSET + sizeof(struct tls_tcb) < 0x8000);
static __inline void *
__lwp_getprivate_fast(void)
{
void *__tp;
__asm("l.ori %0,r10,0" : "=r"(__tp));
return __tp;
}
static __inline void *
__lwp_gettcb_fast(void)
{
void *__tcb;
__asm __volatile(
"l.addi %[__tcb],r10,%[__offset]"
: [__tcb] "=r" (__tcb)
: [__offset] "n" (-(TLS_TP_OFFSET + sizeof(struct tls_tcb))));
return __tcb;
}
static __inline void
__lwp_settcb(void *__tcb)
{
__asm __volatile(
"l.addi r10,%[__tcb],%[__offset]"
:
: [__tcb] "r" (__tcb),
[__offset] "n" (TLS_TP_OFFSET + sizeof(struct tls_tcb)));
}
#endif /* _RTLD_SOURCE || _LIBC_SOURCE || __LIBPTHREAD_SOURCE__ */
#endif /* !_OR1K_MCONTEXT_H_ */