/* $NetBSD: pthread_md.h,v 1.4 2005/12/24 21:11:16 perry Exp $ */ /* * Copyright (c) 2001 Wasabi Systems, Inc. * All rights reserved. * * Written by Jason R. Thorpe for Wasabi Systems, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the NetBSD Project by * Wasabi Systems, Inc. * 4. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef _LIB_PTHREAD_ARM_MD_H #define _LIB_PTHREAD_ARM_MD_H static inline long pthread__sp(void) { long ret; __asm volatile("mov %0, sp" : "=r" (ret)); return (ret); } #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP]) #define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_PC]) /* * Set initial, sane values for registers whose values aren't just * "don't care". */ #ifdef __APCS_26__ #define _INITCONTEXT_U_MD(ucp) \ /* Set R15_MODE_USR in the PC */ \ (ucp)->uc_mcontext.__gregs[_REG_PC] = \ ((ucp)->uc_mcontext.__gregs[_REG_PC] & 0x3fffffc) | 0x0; #else /* Set CPSR to PSR_USE32_MODE (0x10) from arm/armreg.h */ #define _INITCONTEXT_U_MD(ucp) \ (ucp)->uc_mcontext.__gregs[_REG_CPSR] = 0x10; #endif /* * Usable stack space below the ucontext_t. * For a good time, see comments in pthread_switch.S and * ../i386/pthread_switch.S about STACK_SWITCH. */ #define STACKSPACE (6 * sizeof(long)) /* * Conversions between struct reg and struct mcontext. Used by * libpthread_dbg. */ #define PTHREAD_ARM_UCONTEXT_TO_REG(reg, uc) \ do { \ int _reg_; \ \ for (_reg_ = 0; _reg_ <= 12; _reg_++) \ (reg)->r[_reg_] = \ (uc)->uc_mcontext.__gregs[_REG_R0 + _reg_]; \ (reg)->r_sp = (uc)->uc_mcontext.__gregs[_REG_SP]; \ (reg)->r_lr = (uc)->uc_mcontext.__gregs[_REG_LR]; \ (reg)->r_pc = (uc)->uc_mcontext.__gregs[_REG_PC]; \ (reg)->r_cpsr = (uc)->uc_mcontext.__gregs[_REG_CPSR]; \ } while (/*CONSTCOND*/0) #ifdef __APCS_26__ #define PTHREAD_UCONTEXT_TO_REG(reg, uc) PTHREAD_ARM_UCONTEXT_TO_REG((reg), (uc)) #else /* Need to signal in the CPSR that this is 32-bit ARM */ #define PTHREAD_UCONTEXT_TO_REG(reg, uc) \ do { \ PTHREAD_ARM_UCONTEXT_TO_REG((reg), (uc)); \ if ((uc)->uc_flags & _UC_USER) \ (reg)->r_cpsr = 0x10; \ } while (/*CONSTCOND*/0) #endif #define PTHREAD_REG_TO_UCONTEXT(uc, reg) \ do { \ int _reg_; \ \ for (_reg_ = 0; _reg_ <= 12; _reg_++) \ (uc)->uc_mcontext.__gregs[_REG_R0 + _reg_] = \ (reg)->r[_reg_]; \ (uc)->uc_mcontext.__gregs[_REG_SP] = (reg)->r_sp; \ (uc)->uc_mcontext.__gregs[_REG_LR] = (reg)->r_lr; \ (uc)->uc_mcontext.__gregs[_REG_PC] = (reg)->r_pc; \ (uc)->uc_mcontext.__gregs[_REG_CPSR] = (reg)->r_cpsr; \ } while (/*CONSTCOND*/0) /* * XXX Need to deal with VFP. */ #define PTHREAD_UCONTEXT_TO_FPREG(freg, uc) \ do { \ (freg)->fpr_fpsr = (uc)->uc_mcontext.__fpu.__fpregs.__fp_fpsr; \ memcpy((freg)->fpr, (uc)->uc_mcontext.__fpu.__fpregs.__fp_fr, \ sizeof((freg)->fpr)); \ } while (/*CONSTCOND*/0) #define PTHREAD_FPREG_TO_UCONTEXT(uc, freg) \ do { \ (uc)->uc_mcontext.__fpu.__fpregs.__fp_fpsr = (freg)->fpr_fpsr; \ memcpy((uc)->uc_mcontext.__fpu.__fpregs.__fp_fr, (freg)->fpr, \ sizeof((uc)->uc_mcontext.__fpu.__fpregs.__fp_fr)); \ } while (/*CONSTCOND*/0) #endif /* _LIB_PTHREAD_ARM_MD_H */