1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2006 Marcel Moolenaar 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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/types.h> 33 #include <string.h> 34 #include <thread_db.h> 35 36 #include "libpthread_db.h" 37 38 void 39 pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc) 40 { 41 mcontext_t *mc = &uc->uc_mcontext; 42 43 memcpy(mc->mc_frame, r, MIN(sizeof(mc->mc_frame), sizeof(*r))); 44 } 45 46 void 47 pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r) 48 { 49 const mcontext_t *mc = &uc->uc_mcontext; 50 51 memcpy(r, mc->mc_frame, MIN(sizeof(mc->mc_frame), sizeof(*r))); 52 } 53 54 void 55 pt_fpreg_to_ucontext(const struct fpreg *r, ucontext_t *uc) 56 { 57 mcontext_t *mc = &uc->uc_mcontext; 58 59 memcpy(mc->mc_fpreg, r, MIN(sizeof(mc->mc_fpreg), sizeof(*r))); 60 mc->mc_flags |= _MC_FP_VALID; 61 } 62 63 void 64 pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r) 65 { 66 const mcontext_t *mc = &uc->uc_mcontext; 67 68 if (mc->mc_flags & _MC_FP_VALID) 69 memcpy(r, mc->mc_fpreg, MIN(sizeof(mc->mc_fpreg), sizeof(*r))); 70 else 71 memset(r, 0, sizeof(*r)); 72 } 73 74 void 75 pt_md_init(void) 76 { 77 } 78 79 int 80 pt_reg_sstep(struct reg *reg __unused, int step __unused) 81 { 82 83 /* XXX */ 84 return (0); 85 } 86