1/* $NetBSD: mcontext.h,v 1.2 2018/02/15 15:53:56 kamil Exp $ */ 2 3/*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matt Thomas of 3am Software Foundry. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31#ifndef _OR1K_MCONTEXT_H_ 32#define _OR1K_MCONTEXT_H_ 33 34/* 35 */ 36 37#define _NGREG 33 /* GR1-31, FPCSR */ 38 39typedef __int64_t __greg_t; 40typedef __greg_t __gregset_t[_NGREG]; 41 42#define _REG_R1 0 43#define _REG_R2 1 44#define _REG_R3 2 45#define _REG_R4 3 46#define _REG_R5 4 47#define _REG_R6 5 48#define _REG_R7 6 49#define _REG_R8 7 50#define _REG_R9 8 51#define _REG_R10 9 52#define _REG_R11 10 53#define _REG_R12 11 54#define _REG_R13 12 55#define _REG_R14 13 56#define _REG_R15 14 57#define _REG_R16 15 58#define _REG_R17 16 59#define _REG_R18 17 60#define _REG_R19 18 61#define _REG_R20 19 62#define _REG_R21 20 63#define _REG_R22 21 64#define _REG_R23 22 65#define _REG_R24 23 66#define _REG_R25 24 67#define _REG_R26 25 68#define _REG_R27 26 69#define _REG_R28 27 70#define _REG_R29 28 71#define _REG_R30 29 72#define _REG_R31 30 73#define _REG_PC 31 74#define _REG_FPCSR 32 75 76#define _REG_SP _REG_R1 77#define _REG_LR _REG_R9 78#define _REG_TP _REG_R10 79#define _REG_RV _REG_R11 80#define _REG_GP _REG_R16 81 82typedef struct { 83 __gregset_t __gregs; /* General Purpose Register set */ 84 __greg_t __spare[8]; /* future proof */ 85} mcontext_t; 86 87/* Machine-dependent uc_flags */ 88#define _UC_TLSBASE 0x00080000 /* see <sys/ucontext.h> */ 89 90#define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP]) 91#define _UC_MACHINE_FP(uc) ((uc)->uc_mcontext.__gregs[_REG_R2]) 92#define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC]) 93#define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_RV]) 94 95#define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc) 96 97#if defined(_RTLD_SOURCE) || defined(_LIBC_SOURCE) || defined(__LIBPTHREAD_SOURCE__) 98#include <sys/tls.h> 99 100/* 101 * On OpenRISC 1000, since displacements are signed 16-bit values, the TCB 102 * Pointer is biased by 0x7000 + sizeof(tcb) so that first thread datum can be 103 * addressed by -28672 thereby leaving 60KB available for use as thread data. 104 */ 105#define TLS_TP_OFFSET 0x7000 106#define TLS_DTV_OFFSET 0x8000 107__CTASSERT(TLS_TP_OFFSET + sizeof(struct tls_tcb) < 0x8000); 108 109static __inline void * 110__lwp_getprivate_fast(void) 111{ 112 void *__tp; 113 __asm("l.ori %0,r10,0" : "=r"(__tp)); 114 return __tp; 115} 116 117static __inline void * 118__lwp_gettcb_fast(void) 119{ 120 void *__tcb; 121 122 __asm __volatile( 123 "l.addi %[__tcb],r10,%[__offset]" 124 : [__tcb] "=r" (__tcb) 125 : [__offset] "n" (-(TLS_TP_OFFSET + sizeof(struct tls_tcb)))); 126 127 return __tcb; 128} 129 130static __inline void 131__lwp_settcb(void *__tcb) 132{ 133 __asm __volatile( 134 "l.addi r10,%[__tcb],%[__offset]" 135 : 136 : [__tcb] "r" (__tcb), 137 [__offset] "n" (TLS_TP_OFFSET + sizeof(struct tls_tcb))); 138} 139#endif /* _RTLD_SOURCE || _LIBC_SOURCE || __LIBPTHREAD_SOURCE__ */ 140 141#endif /* !_OR1K_MCONTEXT_H_ */ 142