diff options
Diffstat (limited to 'gdb/config/m68k/tm-altos.h')
-rw-r--r-- | gdb/config/m68k/tm-altos.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/gdb/config/m68k/tm-altos.h b/gdb/config/m68k/tm-altos.h new file mode 100644 index 0000000000..2d77fea656 --- /dev/null +++ b/gdb/config/m68k/tm-altos.h @@ -0,0 +1,57 @@ +/* Target definitions for GDB on an Altos 3068 (m68k running SVR2) + Copyright 1987, 1989, 1991, 1993 Free Software Foundation, Inc. + +This file is part of GDB. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* The child target can't deal with floating registers. */ +#define CANNOT_STORE_REGISTER(regno) ((regno) >= FP0_REGNUM) + +/* Define BPT_VECTOR if it is different than the default. + This is the vector number used by traps to indicate a breakpoint. */ + +#define BPT_VECTOR 0xe + +/* Address of end of stack space. */ + +/*#define STACK_END_ADDR (0xffffff)*/ +#define STACK_END_ADDR (0x1000000) + +/* Amount PC must be decremented by after a breakpoint. + On the Altos, the kernel resets the pc to the trap instr */ + +#define DECR_PC_AFTER_BREAK 0 + +/* The only reason this is here is the tm-altos.h reference below. It + was moved back here from tm-m68k.h. FIXME? */ + +#define SKIP_PROLOGUE(pc) \ +{ register int op = read_memory_integer (pc, 2); \ + if (op == 0047126) \ + pc += 4; /* Skip link #word */ \ + else if (op == 0044016) \ + pc += 6; /* Skip link #long */ \ + /* Not sure why branches are here. */ \ + /* From tm-isi.h, tm-altos.h */ \ + else if (op == 0060000) \ + pc += 4; /* Skip bra #word */ \ + else if (op == 00600377) \ + pc += 6; /* skip bra #long */ \ + else if ((op & 0177400) == 0060000) \ + pc += 2; /* skip bra #char */ \ +} + +#include "m68k/tm-m68k.h" |