1 /* $NetBSD: pthread_md.h,v 1.4 2007/10/08 16:04:43 skrll 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _LIB_PTHREAD_ALPHA_MD_H 40 #define _LIB_PTHREAD_ALPHA_MD_H 41 42 #define PTHREAD__ASM_RASOPS 43 44 static inline long 45 pthread__sp(void) 46 { 47 long ret; 48 49 __asm("mov $30, %0" : "=r" (ret)); 50 51 return ret; 52 } 53 54 #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP]) 55 #define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_PC]) 56 57 /* 58 * Set initial, sane values for registers whose values aren't just 59 * "don't care". 60 * 0x0008 is ALPHA_PSL_USERSET from arch/alpha/include/alpha_cpu.h 61 */ 62 #define _INITCONTEXT_U_MD(ucp) \ 63 (ucp)->uc_mcontext.__gregs[_REG_PS] = 0x0008; 64 #define STACKSPACE 32 /* 4 quad values */ 65 /* 66 * Conversions between struct reg and struct mcontext. Used by 67 * libpthread_dbg. 68 */ 69 70 #define PTHREAD_UCONTEXT_TO_REG(reg, uc) do { \ 71 memcpy(&(reg)->r_regs, &(uc)->uc_mcontext.__gregs, \ 72 31 * sizeof(__greg_t)); \ 73 (reg)->r_regs[R_ZERO] = (uc)->uc_mcontext.__gregs[_REG_PC]; \ 74 } while (/*CONSTCOND*/0) 75 76 #define PTHREAD_REG_TO_UCONTEXT(uc, reg) do { \ 77 memcpy(&(uc)->uc_mcontext.__gregs, &(reg)->r_regs, \ 78 31 * sizeof(__greg_t)); \ 79 (uc)->uc_mcontext.__gregs[_REG_PC] = (reg)->r_regs[R_ZERO]; \ 80 (uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER; \ 81 } while (/*CONSTCOND*/0) 82 83 #define PTHREAD_UCONTEXT_TO_FPREG(freg, uc) \ 84 memcpy((freg), &(uc)->uc_mcontext.__fpregs, \ 85 sizeof(struct fpreg)) \ 86 87 #define PTHREAD_FPREG_TO_UCONTEXT(uc, freg) do { \ 88 memcpy(&(uc)->uc_mcontext.__fpregs, (freg), \ 89 sizeof(struct fpreg)); \ 90 (uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER; \ 91 } while (/*CONSTCOND*/0) 92 93 #endif /* _LIB_PTHREAD_ALPHA_MD_H */ 94