1 /* $NetBSD: pthread_md.h,v 1.5 2004/07/03 05:10:06 simonb 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_MIPS_MD_H 40 #define _LIB_PTHREAD_MIPS_MD_H 41 42 static __inline long 43 pthread__sp(void) 44 { 45 long ret; 46 47 __asm("move %0, $sp" : "=r" (ret)); 48 49 return ret; 50 } 51 52 #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP]) 53 #define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_EPC]) 54 55 /* 56 * Usable stack space below the ucontext_t. 57 * For a good time, see comments in pthread_switch.S and 58 * ../i386/pthread_switch.S about STACK_SWITCH. 59 */ 60 #define STACKSPACE (6*4) /* 6 integer values */ 61 62 /* 63 * Conversions between struct reg and struct mcontext. Used by 64 * libpthread_dbg. Note that in the "reg" structure, the indices 65 * are the same as are used in the "frame" structure in the kernel. 66 * These do NOT, in all cases, match the indices used in the 67 * "mcontext" structure. 68 */ 69 #include <mips/regnum.h> 70 71 #define PTHREAD_UCONTEXT_TO_REG(reg, uc) \ 72 do { \ 73 memcpy(&(reg)->r_regs[_R_AST], &(uc)->uc_mcontext.__gregs[_REG_AT],\ 74 sizeof(__greg_t) * 31); \ 75 (reg)->r_regs[_R_MULLO] = (uc)->uc_mcontext.__gregs[_REG_MDLO]; \ 76 (reg)->r_regs[_R_MULHI] = (uc)->uc_mcontext.__gregs[_REG_MDHI]; \ 77 (reg)->r_regs[_R_CAUSE] = (uc)->uc_mcontext.__gregs[_REG_CAUSE];\ 78 (reg)->r_regs[_R_PC] = (uc)->uc_mcontext.__gregs[_REG_EPC]; \ 79 (reg)->r_regs[_R_SR] = (uc)->uc_mcontext.__gregs[_REG_SR]; \ 80 } while (/*CONSTCOND*/0) 81 82 #define PTHREAD_REG_TO_UCONTEXT(uc, reg) \ 83 do { \ 84 memcpy(&(uc)->uc_mcontext.__gregs[_REG_AT], &(reg)->r_regs[_R_AST],\ 85 sizeof(__greg_t) * 31); \ 86 (uc)->uc_mcontext.__gregs[_REG_MDLO] = (reg)->r_regs[_R_MULLO]; \ 87 (uc)->uc_mcontext.__gregs[_REG_MDHI] = (reg)->r_regs[_R_MULHI]; \ 88 (uc)->uc_mcontext.__gregs[_REG_CAUSE] = (reg)->r_regs[_R_CAUSE];\ 89 (uc)->uc_mcontext.__gregs[_REG_EPC] = (reg)->r_regs[_R_PC]; \ 90 (uc)->uc_mcontext.__gregs[_REG_SR] = (reg)->r_regs[_R_SR]; \ 91 \ 92 (uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER; \ 93 } while (/*CONSTCOND*/0) 94 95 #define PTHREAD_UCONTEXT_TO_FPREG(freg, uc) \ 96 do { \ 97 memcpy((freg), &(uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs, \ 98 sizeof((uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs)); \ 99 (freg)->r_regs[_R_FSR - _FPBASE] = \ 100 (uc)->uc_mcontext.__fpregs.__fp_csr; \ 101 } while (/*CONSTCOND*/0) 102 103 #define PTHREAD_FPREG_TO_UCONTEXT(uc, freg) \ 104 do { \ 105 memcpy(&(uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs, (freg), \ 106 sizeof((uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs)); \ 107 (uc)->uc_mcontext.__fpregs.__fp_csr = \ 108 (freg)->r_regs[_R_FSR - _FPBASE]; \ 109 \ 110 (uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER; \ 111 } while (/*CONSTCOND*/0) 112 113 #endif /* !_LIB_PTHREAD_MIPS_MD_H */ 114