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, 2003
4 Free Software Foundation, Inc.
5 Written by Fred Fish at Cygnus Support (fnf@cygint)
7 This file is part of GDB.
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.
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.
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. */
24 /* Define BPT_VECTOR if it is different than the default.
25 This is the vector number used by traps to indicate a breakpoint. */
27 #define BPT_VECTOR 0x1
29 /* How much to decrement the PC after a trap. Depends on kernel. */
31 #define DECR_PC_AFTER_BREAK 0 /* No decrement required */
33 #include "config/tm-sysv4.h"
34 #include "m68k/tm-m68k.h"
36 /* Offsets (in target ints) into jmp_buf. Not defined in any system header
37 file, so we have to step through setjmp/longjmp with a debugger and figure
38 them out. As a double check, note that <setjmp> defines _JBLEN as 13,
39 which matches the number of elements we see saved by setjmp(). */
41 #define JB_ELEMENT_SIZE sizeof(int) /* jmp_buf[_JBLEN] is array of ints */
57 #define JB_PC JB_A1 /* Setjmp()'s return PC saved in A1 */
59 /* Figure out where the longjmp will land. Slurp the args out of the stack.
60 We expect the first arg to be a pointer to the jmp_buf structure from which
61 we extract the pc (JB_PC) that we will land at. The pc is copied into ADDR.
62 This routine returns true on success */
64 #define GET_LONGJMP_TARGET(ADDR) m68k_get_longjmp_target(ADDR)
66 /* Convert a DWARF register number to a gdb REGNUM. */
67 #define DWARF_REG_TO_REGNUM(num) ((num) < 16 ? (num) : (num)+FP0_REGNUM-16)
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