1 /*- 2 * Copyright (c) 2014-2015 The FreeBSD Foundation 3 * 4 * This software was developed by Andrew Turner under 5 * sponsorship from the FreeBSD Foundation. 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/types.h> 30 #include <string.h> 31 #include <thread_db.h> 32 33 #include "libpthread_db.h" 34 35 void abort(void); 36 37 void 38 pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc) 39 { 40 mcontext_t *mc = &uc->uc_mcontext; 41 42 memcpy(mc->mc_gpregs.gp_x, r->x, sizeof(mc->mc_gpregs.gp_x)); 43 mc->mc_gpregs.gp_sp = r->sp; 44 mc->mc_gpregs.gp_lr = r->lr; 45 mc->mc_gpregs.gp_elr = r->elr; 46 mc->mc_gpregs.gp_spsr = r->spsr; 47 } 48 49 void 50 pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r) 51 { 52 const mcontext_t *mc = &uc->uc_mcontext; 53 54 memcpy(r->x, mc->mc_gpregs.gp_x, sizeof(mc->mc_gpregs.gp_x)); 55 r->sp = mc->mc_gpregs.gp_sp; 56 r->lr = mc->mc_gpregs.gp_lr; 57 r->elr = mc->mc_gpregs.gp_elr; 58 r->spsr = mc->mc_gpregs.gp_spsr; 59 } 60 61 void 62 pt_fpreg_to_ucontext(const struct fpreg *r, ucontext_t *uc) 63 { 64 mcontext_t *mc = &uc->uc_mcontext; 65 66 memcpy(&mc->mc_fpregs, r, sizeof(*r)); 67 mc->mc_flags |= _MC_FP_VALID; 68 } 69 70 void 71 pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r) 72 { 73 const mcontext_t *mc = &uc->uc_mcontext; 74 75 if (mc->mc_flags & _MC_FP_VALID) 76 memcpy(r, &mc->mc_fpregs, sizeof(*r)); 77 else 78 memset(r, 0, sizeof(*r)); 79 80 } 81 82 void 83 pt_md_init(void) 84 { 85 } 86 87 int 88 pt_reg_sstep(struct reg *reg __unused, int step __unused) 89 { 90 91 return (0); 92 } 93