lib/libthread_db/arch/powerpc/libpthread_md.c

   1 /*
   2  * Copyright (c) 2006 Marcel Moolenaar
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #include <sys/cdefs.h>
  28 __FBSDID("$FreeBSD$");
  29
  30 #include <sys/types.h>
  31 #include <string.h>
  32 #include <thread_db.h>
  33
  34 #include "libpthread_db.h"
  35
  36 void
  37 pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc)
  38 {
  39         mcontext_t *mc = &uc->uc_mcontext;
  40
  41         memcpy(mc->mc_frame, r, MIN(sizeof(mc->mc_frame), sizeof(*r)));
  42 }
  43
  44 void
  45 pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r)
  46 {
  47         const mcontext_t *mc = &uc->uc_mcontext;
  48
  49         memcpy(r, mc->mc_frame, MIN(sizeof(mc->mc_frame), sizeof(*r)));
  50 }
  51
  52 void
  53 pt_fpreg_to_ucontext(const struct fpreg *r, ucontext_t *uc)
  54 {
  55         mcontext_t *mc = &uc->uc_mcontext;
  56
  57         memcpy(mc->mc_fpreg, r, MIN(sizeof(mc->mc_fpreg), sizeof(*r)));
  58         mc->mc_flags |= _MC_FP_VALID;
  59 }
  60
  61 void
  62 pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r)
  63 {
  64         const mcontext_t *mc = &uc->uc_mcontext;
  65
  66         if (mc->mc_flags & _MC_FP_VALID)
  67                 memcpy(r, mc->mc_fpreg, MIN(sizeof(mc->mc_fpreg), sizeof(*r)));
  68         else
  69                 memset(r, 0, sizeof(*r));
  70 }
  71
  72 void
  73 pt_md_init(void)
  74 {
  75 }
  76
  77 int
  78 pt_reg_sstep(struct reg *reg __unused, int step __unused)
  79 {
  80
  81         /* XXX */
  82         return (0);
  83 }