Tue Jan 19 09:06:14 1993 Ian Lance Taylor (ian@cygnus.com)
[deliverable/binutils-gdb.git] / gdb / tm-altos.h
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dd3b648e 1/* Definitions to make GDB run on an Altos 3068 (m68k running SVR2)
fbcb5095 2 Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc.
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3
4This file is part of GDB.
5
99a7de40 6This program is free software; you can redistribute it and/or modify
dd3b648e 7it under the terms of the GNU General Public License as published by
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8the Free Software Foundation; either version 2 of the License, or
9(at your option) any later version.
dd3b648e 10
99a7de40 11This program is distributed in the hope that it will be useful,
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12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
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17along with this program; if not, write to the Free Software
18Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
dd3b648e 19
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20/* Define BPT_VECTOR if it is different than the default.
21 This is the vector number used by traps to indicate a breakpoint. */
dd3b648e 22
84d82b1c 23#define BPT_VECTOR 0xe
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24
25/* Define this if the C compiler puts an underscore at the front
26 of external names before giving them to the linker. */
27
28#undef NAMES_HAVE_UNDERSCORE
29
fbcb5095 30/* COFF files don't have long filenames. */
dd3b648e 31
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32#define COFF_NO_LONG_FILE_NAMES
33
34/* Address of end of stack space. */
35
36/*#define STACK_END_ADDR (0xffffff)*/
37#define STACK_END_ADDR (0x1000000)
38
39/* Amount PC must be decremented by after a breakpoint.
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40 On the Altos, the kernel resets the pc to the trap instr */
41
42#define DECR_PC_AFTER_BREAK 0
43
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44/* The only reason this is here is the tm-altos.h reference below. It
45 was moved back here from tm-68k.h. FIXME? */
46
47#define SKIP_PROLOGUE(pc) \
48{ register int op = read_memory_integer (pc, 2); \
49 if (op == 0047126) \
50 pc += 4; /* Skip link #word */ \
51 else if (op == 0044016) \
52 pc += 6; /* Skip link #long */ \
53 /* Not sure why branches are here. */ \
54 /* From tm-isi.h, tm-altos.h */ \
55 else if (op == 0060000) \
56 pc += 4; /* Skip bra #word */ \
57 else if (op == 00600377) \
58 pc += 6; /* skip bra #long */ \
59 else if ((op & 0177400) == 0060000) \
60 pc += 2; /* skip bra #char */ \
61}
62
dd3b648e 63#include "tm-68k.h"
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