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)
6 This file is part of GDB.
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.
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.
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. */
23 /* Define BPT_VECTOR if it is different than the default.
24 This is the vector number used by traps to indicate a breakpoint. */
26 #define BPT_VECTOR 0x1
28 /* How much to decrement the PC after a trap. Depends on kernel. */
30 #define DECR_PC_AFTER_BREAK 0 /* No decrement required */
32 /* Use the alternate method of determining valid frame chains. */
34 #define FRAME_CHAIN_VALID(fp,fi) func_frame_chain_valid (fp, fi)
37 #include "m68k/tm-m68k.h"
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(). */
44 #define JB_ELEMENT_SIZE sizeof(int) /* jmp_buf[_JBLEN] is array of ints */
60 #define JB_PC JB_A1 /* Setjmp()'s return PC saved in A1 */
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 */
67 #define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
68 extern int get_longjmp_target PARAMS ((CORE_ADDR *));
70 /* Convert a DWARF register number to a gdb REGNUM. */
71 #define DWARF_REG_TO_REGNUM(num) ((num) < 16 ? (num) : (num)+FP0_REGNUM-16)