gdb/config/i386/tm-nbsd.h

   1 /* Macro definitions for i386 running under NetBSD.
   2    Copyright 1994, 1996, 2000 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #ifndef TM_NBSD_H
  22 #define TM_NBSD_H
  23
  24 #define HAVE_I387_REGS
  25
  26 #include "i386/tm-i386.h"
  27 #include "config/tm-nbsd.h"
  28
  29 extern use_struct_convention_fn i386nbsd_use_struct_convention;
  30 #define USE_STRUCT_CONVENTION(gcc_p, type) \
  31         i386nbsd_use_struct_convention(gcc_p, type)
  32
  33
  34 #define JB_ELEMENT_SIZE sizeof(int)     /* jmp_buf[_JBLEN] is array of ints */
  35 #define JB_PC   0               /* Setjmp()'s return PC saved here */
  36
  37 /* Figure out where the longjmp will land.  Slurp the args out of the stack.
  38    We expect the first arg to be a pointer to the jmp_buf structure from which
  39    we extract the pc (JB_PC) that we will land at.  The pc is copied into ADDR.
  40    This routine returns true on success */
  41
  42 extern int get_longjmp_target (CORE_ADDR *);
  43
  44 #define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
  45
  46 \f
  47 /* Support for signal handlers.  */
  48
  49 /* The sigtramp is above the user stack and immediately below the
  50    user area.  Using constants here allows for cross debugging. */
  51
  52 #define SIGTRAMP_START(pc)      0xbfbfdf20
  53 #define SIGTRAMP_END(pc)        0xbfbfdff0
  54
  55 /* Offset to saved PC in sigcontext, from <sys/signal.h>.  */
  56 #define SIGCONTEXT_PC_OFFSET 20
  57
  58 #endif /* TM_NBSD_H */