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 1991, 1994, 1995, 1996, 1998, 1999, 2000
   4    Free Software Foundation, Inc.
   5    Written by Fred Fish at Cygnus Support (fnf@cygint)
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 59 Temple Place - Suite 330,
  22    Boston, MA 02111-1307, USA.  */
  23
  24 /* Define BPT_VECTOR if it is different than the default.
  25    This is the vector number used by traps to indicate a breakpoint. */
  26
  27 #define BPT_VECTOR 0x1
  28
  29 /* How much to decrement the PC after a trap.  Depends on kernel. */
  30
  31 #define DECR_PC_AFTER_BREAK 0   /* No decrement required */
  32
  33 /* Use the alternate method of determining valid frame chains. */
  34
  35 #define FRAME_CHAIN_VALID(fp,fi) func_frame_chain_valid (fp, fi)
  36
  37 #include "tm-sysv4.h"
  38 #include "m68k/tm-m68k.h"
  39
  40 /* Offsets (in target ints) into jmp_buf.  Not defined in any system header
  41    file, so we have to step through setjmp/longjmp with a debugger and figure
  42    them out.  As a double check, note that <setjmp> defines _JBLEN as 13,
  43    which matches the number of elements we see saved by setjmp(). */
  44
  45 #define JB_ELEMENT_SIZE sizeof(int)     /* jmp_buf[_JBLEN] is array of ints */
  46
  47 #define JB_D2   0
  48 #define JB_D3   1
  49 #define JB_D4   2
  50 #define JB_D5   3
  51 #define JB_D6   4
  52 #define JB_D7   5
  53 #define JB_A1   6
  54 #define JB_A2   7
  55 #define JB_A3   8
  56 #define JB_A4   9
  57 #define JB_A5   10
  58 #define JB_A6   11
  59 #define JB_A7   12
  60
  61 #define JB_PC   JB_A1           /* Setjmp()'s return PC saved in A1 */
  62
  63 /* Figure out where the longjmp will land.  Slurp the args out of the stack.
  64    We expect the first arg to be a pointer to the jmp_buf structure from which
  65    we extract the pc (JB_PC) that we will land at.  The pc is copied into ADDR.
  66    This routine returns true on success */
  67
  68 #define GET_LONGJMP_TARGET(ADDR) m68k_get_longjmp_target(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)