1 /* $NetBSD: pthread_md.h,v 1.5 2008/04/28 20:23:02 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Nathan J. Williams. 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 32 #ifndef _LIB_PTHREAD_ALPHA_MD_H 33 #define _LIB_PTHREAD_ALPHA_MD_H 34 35 #define PTHREAD__ASM_RASOPS 36 37 static inline long 38 pthread__sp(void) 39 { 40 long ret; 41 42 __asm("mov $30, %0" : "=r" (ret)); 43 44 return ret; 45 } 46 47 #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP]) 48 #define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_PC]) 49 50 /* 51 * Set initial, sane values for registers whose values aren't just 52 * "don't care". 53 * 0x0008 is ALPHA_PSL_USERSET from arch/alpha/include/alpha_cpu.h 54 */ 55 #define _INITCONTEXT_U_MD(ucp) \ 56 (ucp)->uc_mcontext.__gregs[_REG_PS] = 0x0008; 57 #define STACKSPACE 32 /* 4 quad values */ 58 /* 59 * Conversions between struct reg and struct mcontext. Used by 60 * libpthread_dbg. 61 */ 62 63 #define PTHREAD_UCONTEXT_TO_REG(reg, uc) do { \ 64 memcpy(&(reg)->r_regs, &(uc)->uc_mcontext.__gregs, \ 65 31 * sizeof(__greg_t)); \ 66 (reg)->r_regs[R_ZERO] = (uc)->uc_mcontext.__gregs[_REG_PC]; \ 67 } while (/*CONSTCOND*/0) 68 69 #define PTHREAD_REG_TO_UCONTEXT(uc, reg) do { \ 70 memcpy(&(uc)->uc_mcontext.__gregs, &(reg)->r_regs, \ 71 31 * sizeof(__greg_t)); \ 72 (uc)->uc_mcontext.__gregs[_REG_PC] = (reg)->r_regs[R_ZERO]; \ 73 (uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER; \ 74 } while (/*CONSTCOND*/0) 75 76 #define PTHREAD_UCONTEXT_TO_FPREG(freg, uc) \ 77 memcpy((freg), &(uc)->uc_mcontext.__fpregs, \ 78 sizeof(struct fpreg)) \ 79 80 #define PTHREAD_FPREG_TO_UCONTEXT(uc, freg) do { \ 81 memcpy(&(uc)->uc_mcontext.__fpregs, (freg), \ 82 sizeof(struct fpreg)); \ 83 (uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER; \ 84 } while (/*CONSTCOND*/0) 85 86 #endif /* _LIB_PTHREAD_ALPHA_MD_H */ 87