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/types.h> 31 #include <string.h> 32 #include <thread_db.h> 33 34 #include "libpthread_db.h" 35 36 void abort(void); 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_gpregs.gp_x, r->x, sizeof(mc->mc_gpregs.gp_x)); 44 mc->mc_gpregs.gp_sp = r->sp; 45 mc->mc_gpregs.gp_lr = r->lr; 46 mc->mc_gpregs.gp_elr = r->elr; 47 mc->mc_gpregs.gp_spsr = r->spsr; 48 } 49 50 void 51 pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r) 52 { 53 const mcontext_t *mc = &uc->uc_mcontext; 54 55 memcpy(r->x, mc->mc_gpregs.gp_x, sizeof(mc->mc_gpregs.gp_x)); 56 r->sp = mc->mc_gpregs.gp_sp; 57 r->lr = mc->mc_gpregs.gp_lr; 58 r->elr = mc->mc_gpregs.gp_elr; 59 r->spsr = mc->mc_gpregs.gp_spsr; 60 } 61 62 void 63 pt_fpreg_to_ucontext(const struct fpreg *r, ucontext_t *uc) 64 { 65 mcontext_t *mc = &uc->uc_mcontext; 66 67 memcpy(&mc->mc_fpregs, r, sizeof(*r)); 68 mc->mc_flags |= _MC_FP_VALID; 69 } 70 71 void 72 pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r) 73 { 74 const mcontext_t *mc = &uc->uc_mcontext; 75 76 if (mc->mc_flags & _MC_FP_VALID) 77 memcpy(r, &mc->mc_fpregs, sizeof(*r)); 78 else 79 memset(r, 0, sizeof(*r)); 80 81 } 82 83 void 84 pt_md_init(void) 85 { 86 } 87 88 int 89 pt_reg_sstep(struct reg *reg __unused, int step __unused) 90 { 91 92 return (0); 93 } 94