gdb/config/m68k/tm-m68kv4.h

   1 /* Target definitions for GDB on a Motorola 680x0 running SVR4.
   2    (Commodore Amiga with amix or Atari TT with ASV)
   3    Copyright (C) 1991, 1995 Free Software Foundation, Inc.
   4    Written by Fred Fish at Cygnus Support (fnf@cygint)
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 59 Temple Place - Suite 330,
  21    Boston, MA 02111-1307, USA.  */
  22
  23 /* Define BPT_VECTOR if it is different than the default.
  24    This is the vector number used by traps to indicate a breakpoint. */
  25
  26 #define BPT_VECTOR 0x1
  27
  28 /* How much to decrement the PC after a trap.  Depends on kernel. */
  29
  30 #define DECR_PC_AFTER_BREAK 0   /* No decrement required */
  31
  32 /* Use the alternate method of determining valid frame chains. */
  33
  34 #define FRAME_CHAIN_VALID(fp,fi) alternate_frame_chain_valid (fp, fi)
  35
  36 #include "tm-sysv4.h"
  37 #include "m68k/tm-m68k.h"
  38
  39 /* Offsets (in target ints) into jmp_buf.  Not defined in any system header
  40    file, so we have to step through setjmp/longjmp with a debugger and figure
  41    them out.  As a double check, note that <setjmp> defines _JBLEN as 13,
  42    which matches the number of elements we see saved by setjmp(). */
  43
  44 #define JB_ELEMENT_SIZE sizeof(int)     /* jmp_buf[_JBLEN] is array of ints */
  45
  46 #define JB_D2   0
  47 #define JB_D3   1
  48 #define JB_D4   2
  49 #define JB_D5   3
  50 #define JB_D6   4
  51 #define JB_D7   5
  52 #define JB_A1   6
  53 #define JB_A2   7
  54 #define JB_A3   8
  55 #define JB_A4   9
  56 #define JB_A5   10
  57 #define JB_A6   11
  58 #define JB_A7   12
  59
  60 #define JB_PC   JB_A1           /* Setjmp()'s return PC saved in A1 */
  61
  62 /* Figure out where the longjmp will land.  Slurp the args out of the stack.
  63    We expect the first arg to be a pointer to the jmp_buf structure from which
  64    we extract the pc (JB_PC) that we will land at.  The pc is copied into ADDR.
  65    This routine returns true on success */
  66
  67 #define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
  68 extern int get_longjmp_target PARAMS ((CORE_ADDR *));
  69
  70 /* Convert a DWARF register number to a gdb REGNUM.  */
  71 #define DWARF_REG_TO_REGNUM(num) ((num) < 16 ? (num) : (num)+FP0_REGNUM-16)