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import gdb-1999-07-07 post reformat
[thirdparty/binutils-gdb.git] / gdb / config / m68k / tm-m68kv4.h
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c906108c
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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
c5aa993b 6 This file is part of GDB.
c906108c 7
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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.
c906108c 12
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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.
c906108c 17
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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. */
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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
c5aa993b 30#define DECR_PC_AFTER_BREAK 0 /* No decrement required */
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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
c5aa993b 60#define JB_PC JB_A1 /* Setjmp()'s return PC saved in A1 */
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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)
68extern 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)