141 lines
4.0 KiB
C
141 lines
4.0 KiB
C
/* $NetBSD: mcontext.h,v 1.1 2014/09/03 19:34:26 matt Exp $ */
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/*-
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* Copyright (c) 2014 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matt Thomas of 3am Software Foundry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _OR1K_MCONTEXT_H_
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#define _OR1K_MCONTEXT_H_
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/*
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*/
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#define _NGREG 33 /* GR1-31, FPCSR */
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typedef __int64_t __greg_t;
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typedef __greg_t __gregset_t[_NGREG];
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#define _REG_R1 0
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#define _REG_R2 1
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#define _REG_R3 2
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#define _REG_R4 3
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#define _REG_R5 4
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#define _REG_R6 5
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#define _REG_R7 6
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#define _REG_R8 7
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#define _REG_R9 8
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#define _REG_R10 9
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#define _REG_R11 10
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#define _REG_R12 11
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#define _REG_R13 12
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#define _REG_R14 13
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#define _REG_R15 14
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#define _REG_R16 15
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#define _REG_R17 16
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#define _REG_R18 17
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#define _REG_R19 18
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#define _REG_R20 19
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#define _REG_R21 20
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#define _REG_R22 21
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#define _REG_R23 22
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#define _REG_R24 23
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#define _REG_R25 24
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#define _REG_R26 25
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#define _REG_R27 26
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#define _REG_R28 27
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#define _REG_R29 28
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#define _REG_R30 29
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#define _REG_R31 30
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#define _REG_PC 31
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#define _REG_FPCSR 32
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#define _REG_SP _REG_R1
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#define _REG_LR _REG_R9
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#define _REG_TP _REG_R10
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#define _REG_RV _REG_R11
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#define _REG_GP _REG_R16
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typedef struct {
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__gregset_t __gregs; /* General Purpose Register set */
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__greg_t __spare[8]; /* future proof */
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} mcontext_t;
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/* Machine-dependent uc_flags */
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#define _UC_TLSBASE 0x00080000 /* see <sys/ucontext.h> */
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#define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP])
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#define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC])
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#define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_RV])
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#define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc)
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#if defined(_RTLD_SOURCE) || defined(_LIBC_SOURCE) || defined(__LIBPTHREAD_SOURCE__)
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#include <sys/tls.h>
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/*
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* On OpenRISC 1000, since displacements are signed 16-bit values, the TCB
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* Pointer is biased by 0x7000 + sizeof(tcb) so that first thread datum can be
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* addressed by -28672 thereby leaving 60KB available for use as thread data.
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*/
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#define TLS_TP_OFFSET 0x7000
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#define TLS_DTV_OFFSET 0x8000
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__CTASSERT(TLS_TP_OFFSET + sizeof(struct tls_tcb) < 0x8000);
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static __inline void *
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__lwp_getprivate_fast(void)
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{
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void *__tp;
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__asm("l.ori %0,r10,0" : "=r"(__tp));
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return __tp;
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}
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static __inline void *
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__lwp_gettcb_fast(void)
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{
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void *__tcb;
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__asm __volatile(
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"l.addi %[__tcb],r10,%[__offset]"
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: [__tcb] "=r" (__tcb)
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: [__offset] "n" (-(TLS_TP_OFFSET + sizeof(struct tls_tcb))));
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return __tcb;
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}
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static __inline void
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__lwp_settcb(void *__tcb)
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{
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__asm __volatile(
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"l.addi r10,%[__tcb],%[__offset]"
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:
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: [__tcb] "r" (__tcb),
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[__offset] "n" (TLS_TP_OFFSET + sizeof(struct tls_tcb)));
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}
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#endif /* _RTLD_SOURCE || _LIBC_SOURCE || __LIBPTHREAD_SOURCE__ */
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#endif /* !_OR1K_MCONTEXT_H_ */
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