1 /*- 2 * Copyright (c) 2014-2015 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Andrew Turner under 6 * sponsorship from the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 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 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 #include <sys/types.h> 32 #include <string.h> 33 #include <thread_db.h> 34 35 #include "libpthread_db.h" 36 37 void abort(void); 38 39 void 40 pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc) 41 { 42 mcontext_t *mc = &uc->uc_mcontext; 43 44 memcpy(mc->mc_gpregs.gp_x, r->x, sizeof(mc->mc_gpregs.gp_x)); 45 mc->mc_gpregs.gp_sp = r->sp; 46 mc->mc_gpregs.gp_lr = r->lr; 47 mc->mc_gpregs.gp_elr = r->elr; 48 mc->mc_gpregs.gp_spsr = r->spsr; 49 } 50 51 void 52 pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r) 53 { 54 const mcontext_t *mc = &uc->uc_mcontext; 55 56 memcpy(r->x, mc->mc_gpregs.gp_x, sizeof(mc->mc_gpregs.gp_x)); 57 r->sp = mc->mc_gpregs.gp_sp; 58 r->lr = mc->mc_gpregs.gp_lr; 59 r->elr = mc->mc_gpregs.gp_elr; 60 r->spsr = mc->mc_gpregs.gp_spsr; 61 } 62 63 void 64 pt_fpreg_to_ucontext(const struct fpreg *r, ucontext_t *uc) 65 { 66 mcontext_t *mc = &uc->uc_mcontext; 67 68 memcpy(&mc->mc_fpregs, r, sizeof(*r)); 69 mc->mc_flags |= _MC_FP_VALID; 70 } 71 72 void 73 pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r) 74 { 75 const mcontext_t *mc = &uc->uc_mcontext; 76 77 if (mc->mc_flags & _MC_FP_VALID) 78 memcpy(r, &mc->mc_fpregs, sizeof(*r)); 79 else 80 memset(r, 0, sizeof(*r)); 81 82 } 83 84 void 85 pt_md_init(void) 86 { 87 } 88 89 int 90 pt_reg_sstep(struct reg *reg __unused, int step __unused) 91 { 92 93 return (0); 94 } 95