3dcac15f1f
* ns32k-tdep.c (flip_bytes, ns32k_localcount,
ns32k_get_enter_addr, sign_extend): Restore functions mysteriously
deleted.
* ns32knbsd-nat.c: New (?) file to support fetching and storing
registers on NetBSD hosts.
* nbsd.mh (NATDEPFILES): put ns32knbsd-nat.o instead of
ns32k-nat.o
* ns32km3-nat.c (reg_offset): Get order of floating point
registers correct. Add extra 32382 register offsets.
(REG_ADDRESS): define to point at correct part of thread
state. Use calls to "warning" instead of "message".
* tm-nbsd.h, tm-ns32km3.h (REGISTER_NAMES, NUM_REGS,
REGISTER_BYTES, REGISTER_BYTE): redefine allowing for 32382
fpu registers.
112 lines
2.7 KiB
C
112 lines
2.7 KiB
C
/* Print NS 32000 instructions for GDB, the GNU debugger.
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Copyright 1986, 1988, 1991, 1992, 1994, 1995
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "defs.h"
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void
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_initialize_ns32k_tdep ()
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{
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tm_print_insn = print_insn_ns32k;
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}
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sign_extend (value, bits)
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{
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value = value & ((1 << bits) - 1);
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return (value & (1 << (bits-1))
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? value | (~((1 << bits) - 1))
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: value);
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}
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void
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flip_bytes (ptr, count)
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char *ptr;
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int count;
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{
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char tmp;
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while (count > 0)
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{
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tmp = *ptr;
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ptr[0] = ptr[count-1];
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ptr[count-1] = tmp;
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ptr++;
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count -= 2;
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}
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}
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/* Return the number of locals in the current frame given a pc
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pointing to the enter instruction. This is used in the macro
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FRAME_FIND_SAVED_REGS. */
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int
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ns32k_localcount (enter_pc)
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CORE_ADDR enter_pc;
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{
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unsigned char localtype;
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int localcount;
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localtype = read_memory_integer (enter_pc+2, 1);
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if ((localtype & 0x80) == 0)
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localcount = localtype;
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else if ((localtype & 0xc0) == 0x80)
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localcount = (((localtype & 0x3f) << 8)
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| (read_memory_integer (enter_pc+3, 1) & 0xff));
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else
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localcount = (((localtype & 0x3f) << 24)
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| ((read_memory_integer (enter_pc+3, 1) & 0xff) << 16)
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| ((read_memory_integer (enter_pc+4, 1) & 0xff) << 8 )
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| (read_memory_integer (enter_pc+5, 1) & 0xff));
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return localcount;
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}
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/*
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* Get the address of the enter opcode for the function
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* containing PC, if there is an enter for the function,
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* and if the pc is between the enter and exit.
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* Returns positive address if pc is between enter/exit,
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* 1 if pc before enter or after exit, 0 otherwise.
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*/
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CORE_ADDR
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ns32k_get_enter_addr (pc)
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CORE_ADDR pc;
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{
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CORE_ADDR enter_addr;
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unsigned char op;
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if (pc == 0)
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return 0;
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if (ABOUT_TO_RETURN (pc))
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return 1; /* after exit */
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enter_addr = get_pc_function_start (pc);
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if (pc == enter_addr)
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return 1; /* before enter */
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op = read_memory_integer (enter_addr, 1);
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if (op != 0x82)
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return 0; /* function has no enter/exit */
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return enter_addr; /* pc is between enter and exit */
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}
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