64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/* Definitions to make GDB run on an Altos 3068 (m68k running SVR2)
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Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Define BPT_VECTOR if it is different than the default.
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This is the vector number used by traps to indicate a breakpoint. */
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#define BPT_VECTOR 0xe
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/* Define this if the C compiler puts an underscore at the front
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of external names before giving them to the linker. */
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#undef NAMES_HAVE_UNDERSCORE
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/* COFF files don't have long filenames. */
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#define COFF_NO_LONG_FILE_NAMES
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/* Address of end of stack space. */
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/*#define STACK_END_ADDR (0xffffff)*/
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#define STACK_END_ADDR (0x1000000)
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/* Amount PC must be decremented by after a breakpoint.
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On the Altos, the kernel resets the pc to the trap instr */
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#define DECR_PC_AFTER_BREAK 0
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/* The only reason this is here is the tm-altos.h reference below. It
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was moved back here from tm-68k.h. FIXME? */
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#define SKIP_PROLOGUE(pc) \
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{ register int op = read_memory_integer (pc, 2); \
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if (op == 0047126) \
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pc += 4; /* Skip link #word */ \
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else if (op == 0044016) \
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pc += 6; /* Skip link #long */ \
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/* Not sure why branches are here. */ \
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/* From tm-isi.h, tm-altos.h */ \
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else if (op == 0060000) \
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pc += 4; /* Skip bra #word */ \
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else if (op == 00600377) \
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pc += 6; /* skip bra #long */ \
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else if ((op & 0177400) == 0060000) \
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pc += 2; /* skip bra #char */ \
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}
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#include "tm-68k.h"
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