139 lines
4.7 KiB
C
139 lines
4.7 KiB
C
/* $NetBSD: pthread_md.h,v 1.3 2003/01/18 18:40:08 christos Exp $ */
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/*
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* Copyright (c) 2001 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LIB_PTHREAD_ARM_MD_H
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#define _LIB_PTHREAD_ARM_MD_H
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static __inline long
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pthread__sp(void)
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{
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long ret;
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__asm __volatile("mov %0, sp"
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: "=r" (ret));
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return (ret);
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}
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#define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP])
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#define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_PC])
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/*
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* Set initial, sane values for registers whose values aren't just
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* "don't care".
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*/
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#ifdef __APCS_26__
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#define _INITCONTEXT_U_MD(ucp) \
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/* Set R15_MODE_USR in the PC */ \
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(ucp)->uc_mcontext.__gregs[_REG_PC] = \
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((ucp)->uc_mcontext.__gregs[_REG_PC] & 0x3fffffc) | 0x0;
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#else
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/* Set CPSR to PSR_USE32_MODE (0x10) from arm/armreg.h */
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#define _INITCONTEXT_U_MD(ucp) \
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(ucp)->uc_mcontext.__gregs[_REG_CPSR] = 0x10;
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#endif
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/*
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* Usable stack space below the ucontext_t.
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* For a good time, see comments in pthread_switch.S and
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* ../i386/pthread_switch.S about STACK_SWITCH.
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*/
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#define STACKSPACE (6 * sizeof(long))
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/*
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* Conversions between struct reg and struct mcontext. Used by
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* libpthread_dbg.
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*/
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#define PTHREAD_ARM_UCONTEXT_TO_REG(reg, uc) \
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do { \
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int _reg_; \
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\
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for (_reg_ = 0; _reg_ <= 12; _reg_++) \
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(reg)->r[_reg_] = \
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(uc)->uc_mcontext.__gregs[_REG_R0 + _reg_]; \
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(reg)->r_sp = (uc)->uc_mcontext.__gregs[_REG_SP]; \
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(reg)->r_lr = (uc)->uc_mcontext.__gregs[_REG_LR]; \
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(reg)->r_pc = (uc)->uc_mcontext.__gregs[_REG_PC]; \
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(reg)->r_cpsr = (uc)->uc_mcontext.__gregs[_REG_CPSR]; \
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} while (/*CONSTCOND*/0)
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#ifdef __APCS_26__
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#define PTHREAD_UCONTEXT_TO_REG(reg, uc) PTHREAD_ARM_UCONTEXT_TO_REG((reg), (uc))
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#else
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/* Need to signal in the CPSR that this is 32-bit ARM */
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#define PTHREAD_UCONTEXT_TO_REG(reg, uc) \
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do { \
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PTHREAD_ARM_UCONTEXT_TO_REG((reg), (uc)); \
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if ((uc)->uc_flags & _UC_USER) \
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(reg)->r_cpsr = 0x10; \
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} while (/*CONSTCOND*/0)
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#endif
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#define PTHREAD_REG_TO_UCONTEXT(uc, reg) \
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do { \
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int _reg_; \
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\
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for (_reg_ = 0; _reg_ <= 12; _reg_++) \
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(uc)->uc_mcontext.__gregs[_REG_R0 + _reg_] = \
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(reg)->r[_reg_]; \
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(uc)->uc_mcontext.__gregs[_REG_SP] = (reg)->r_sp; \
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(uc)->uc_mcontext.__gregs[_REG_LR] = (reg)->r_lr; \
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(uc)->uc_mcontext.__gregs[_REG_PC] = (reg)->r_pc; \
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(uc)->uc_mcontext.__gregs[_REG_CPSR] = (reg)->r_cpsr; \
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} while (/*CONSTCOND*/0)
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/*
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* XXX Need to deal with VFP.
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*/
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#define PTHREAD_UCONTEXT_TO_FPREG(freg, uc) \
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do { \
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(freg)->fpr_fpsr = (uc)->uc_mcontext.__fpu.__fpregs.__fp_fpsr; \
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memcpy((freg)->fpr, (uc)->uc_mcontext.__fpu.__fpregs.__fp_fr, \
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sizeof((freg)->fpr)); \
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} while (/*CONSTCOND*/0)
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#define PTHREAD_FPREG_TO_UCONTEXT(uc, freg) \
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do { \
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(uc)->uc_mcontext.__fpu.__fpregs.__fp_fpsr = (freg)->fpr_fpsr; \
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memcpy((uc)->uc_mcontext.__fpu.__fpregs.__fp_fr, (freg)->fpr, \
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sizeof((uc)->uc_mcontext.__fpu.__fpregs.__fp_fr)); \
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} while (/*CONSTCOND*/0)
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#endif /* _LIB_PTHREAD_ARM_MD_H */
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