1 /* $NetBSD: pthread_md.h,v 1.6 2008/04/28 20:23:02 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _LIB_PTHREAD_SPARC_MD_H 30 #define _LIB_PTHREAD_SPARC_MD_H 31 32 /* 33 * pthread__sp used for identifying thread 34 */ 35 static inline long 36 pthread__sp(void) 37 { 38 long ret; 39 40 __asm("mov %%sp, %0" : "=r" (ret)); 41 42 return ret; 43 } 44 45 #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_O6]) 46 #define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_PC]) 47 48 #define STACKSPACE 96 /* min stack frame XXX */ 49 50 /* 51 * Conversions between struct reg and struct mcontext. Used by 52 * libpthread_dbg. 53 * XXX macros 54 */ 55 56 #define PTHREAD_UCONTEXT_TO_REG(reg, uc) do { \ 57 memcpy((reg), &(uc)->uc_mcontext.__gregs, \ 58 (_REG_Y+1)*sizeof(__greg_t)); \ 59 (reg)->r_global[0] = 0; \ 60 memcpy(&(reg)->r_global[1], &(uc)->uc_mcontext.__gregs[_REG_G1],\ 61 (_REG_O7-_REG_G1+1)*sizeof(__greg_t)); \ 62 } while (/*CONSTCOND*/0) 63 64 #define PTHREAD_REG_TO_UCONTEXT(uc, reg) do { \ 65 memcpy(&(uc)->uc_mcontext.__gregs, (reg), \ 66 (_REG_Y+1)*sizeof(__greg_t)); \ 67 (uc)->uc_mcontext.__gregs[_REG_Y] = (reg)->r_y; \ 68 memcpy(&(uc)->uc_mcontext.__gregs[_REG_G1], &(reg)->r_global[1],\ 69 (_REG_O7-_REG_G1+1)*sizeof(__greg_t)); \ 70 (uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER; \ 71 } while (/*CONSTCOND*/0) 72 73 #define PTHREAD_UCONTEXT_TO_FPREG(freg, uc) do { \ 74 memcpy((freg)->fr_regs, \ 75 &(uc)->uc_mcontext.__fpregs.__fpu_fr.__fpu_regs, \ 76 32*sizeof(u_int)); \ 77 (freg)->fr_fsr = (uc)->uc_mcontext.__fpregs.__fpu_fsr; \ 78 } while (/*CONSTCOND*/0) 79 80 #define PTHREAD_FPREG_TO_UCONTEXT(uc, freg) do { \ 81 memcpy(&(uc)->uc_mcontext.__fpregs.__fpu_fr.__fpu_regs, \ 82 (freg)->fr_regs, \ 83 32*sizeof(u_int)); \ 84 (uc)->uc_mcontext.__fpregs.__fpu_fsr = (freg)->fr_fsr; \ 85 (uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER; \ 86 } while (/*CONSTCOND*/0) 87 88 /* Don't need additional memory barriers. */ 89 #define PTHREAD__ATOMIC_IS_MEMBAR 90 91 #endif /* _LIB_PTHREAD_SPARC_MD_H */ 92