1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2006-2007, Juniper Networks, 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 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of Juniper Networks nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY JUNIPER NETWORKS ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include <sys/types.h> 36 #define _WANT_MIPS_REGNUM 37 #include <sys/procfs.h> 38 #include <ucontext.h> 39 #include <string.h> 40 #include <thread_db.h> 41 #include "libpthread_db.h" 42 43 void 44 pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc) 45 { 46 47 memcpy(uc->uc_mcontext.mc_regs, &r->r_regs[ZERO], 48 sizeof(uc->uc_mcontext.mc_regs)); 49 uc->uc_mcontext.mc_pc = r->r_regs[PC]; 50 uc->uc_mcontext.mullo = r->r_regs[MULLO]; 51 uc->uc_mcontext.mulhi = r->r_regs[MULHI]; 52 } 53 54 void 55 pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r) 56 { 57 memcpy(&r->r_regs[ZERO], uc->uc_mcontext.mc_regs, 58 sizeof(uc->uc_mcontext.mc_regs)); 59 r->r_regs[PC] = uc->uc_mcontext.mc_pc; 60 r->r_regs[MULLO] = uc->uc_mcontext.mullo; 61 r->r_regs[MULHI] = uc->uc_mcontext.mulhi; 62 } 63 64 void 65 pt_fpreg_to_ucontext(const struct fpreg* r, ucontext_t *uc) 66 { 67 68 memcpy(uc->uc_mcontext.mc_fpregs, r->r_regs, 69 sizeof(uc->uc_mcontext.mc_fpregs)); 70 } 71 72 void 73 pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r) 74 { 75 76 memcpy(r->r_regs, uc->uc_mcontext.mc_fpregs, 77 sizeof(uc->uc_mcontext.mc_fpregs)); 78 } 79 80 void 81 pt_md_init(void) 82 { 83 /* Nothing to do */ 84 } 85 86 int 87 pt_reg_sstep(struct reg *reg __unused, int step __unused) 88 { 89 /* 90 * XXX: mips doesnt store single step info in any registers 91 */ 92 return (0); 93 } 94