+++ /dev/null
-/* Functions specific to running gdb native on a Motorola Delta Series sysV68.
- Copyright 1993, 1996, 1998, 2000 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. */
-
-#include "defs.h"
-#include <sys/signal.h> /* for MAXSIG in sys/user.h */
-#include <sys/types.h> /* for ushort in sys/dir.h */
-#include <sys/dir.h> /* for struct direct in sys/user.h */
-#include <sys/user.h>
-
-#include <nlist.h>
-
-#if !defined (offsetof)
-#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
-#endif
-
-/* Return the address in the core dump or inferior of register REGNO.
- BLOCKEND is the address of the end of the user structure. */
-
-CORE_ADDR
-register_addr (int regno, CORE_ADDR blockend)
-{
- static int sysv68reg[] =
- {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, -1, 15, 16};
-
- if (regno >= 0 && regno < sizeof (sysv68reg) / sizeof (sysv68reg[0]))
- return blockend + sysv68reg[regno] * 4;
- else if (regno < FPC_REGNUM)
- return offsetof (struct user, u_fpu.regs.reg[regno - FP0_REGNUM][0]);
- else if (regno == FPC_REGNUM)
- return offsetof (struct user, u_fpu.regs.control);
- else if (regno == FPS_REGNUM)
- return offsetof (struct user, u_fpu.regs.status);
- else if (regno == FPI_REGNUM)
- return offsetof (struct user, u_fpu.regs.iaddr);
- else
- {
- fprintf_unfiltered (gdb_stderr, "\
-Internal error: invalid register number %d in REGISTER_U_ADDR\n",
- regno);
- return blockend;
- }
-}
-
-CORE_ADDR kernel_u_addr;
-
-/* Read the value of the u area from the kernel. */
-void
-_initialize_delta68_nat (void)
-{
- struct nlist nl[2];
-
- nl[0].n_name = "u";
- nl[1].n_name = NULL;
- if (nlist ("/sysV68", nl) == 0 && nl[0].n_scnum != 0)
- kernel_u_addr = nl[0].n_value;
- else
- {
- perror ("Cannot get kernel u area address");
- exit (1);
- }
-}
-
-clear_insn_cache (void)
-{
-#ifdef MCT_TEXT /* in sys/signal.h on sysV68 R3V7.1 */
- memctl (0, 4096, MCT_TEXT);
-#endif
-}
-
-kernel_u_size (void)
-{
- return sizeof (struct user);
-}
return RETURN_VALUE_REGISTER_CONVENTION;
}
\f
-int
-delta68_in_sigtramp (CORE_ADDR pc, char *name)
-{
- if (name != NULL)
- return strcmp (name, "_sigcode") == 0;
- else
- return 0;
-}
-
-CORE_ADDR
-delta68_frame_args_address (struct frame_info *frame_info)
-{
- /* we assume here that the only frameless functions are the system calls
- or other functions who do not put anything on the stack. */
- if (get_frame_type (frame_info) == SIGTRAMP_FRAME)
- return get_frame_base (frame_info) + 12;
- else if (legacy_frameless_look_for_prologue (frame_info))
- {
- /* Check for an interrupted system call */
- if (get_next_frame (frame_info) && (get_frame_type (get_next_frame (frame_info)) == SIGTRAMP_FRAME))
- return get_frame_base (get_next_frame (frame_info)) + 16;
- else
- return get_frame_base (frame_info) + 4;
- }
- else
- return get_frame_base (frame_info);
-}
-
-CORE_ADDR
-delta68_frame_saved_pc (struct frame_info *frame_info)
-{
- return read_memory_unsigned_integer (delta68_frame_args_address (frame_info)
- + 4, 4);
-}
-
-int
-delta68_frame_num_args (struct frame_info *fi)
-{
- int val;
- CORE_ADDR pc = DEPRECATED_FRAME_SAVED_PC (fi);
- int insn = read_memory_unsigned_integer (pc, 2);
- val = 0;
- if (insn == 0047757 || insn == 0157374) /* lea W(sp),sp or addaw #W,sp */
- val = read_memory_integer (pc + 2, 2);
- else if ((insn & 0170777) == 0050217 /* addql #N, sp */
- || (insn & 0170777) == 0050117) /* addqw */
- {
- val = (insn >> 9) & 7;
- if (val == 0)
- val = 8;
- }
- else if (insn == 0157774) /* addal #WW, sp */
- val = read_memory_integer (pc + 2, 4);
- val >>= 2;
- return val;
-}
static CORE_ADDR
m68k_push_dummy_call (struct gdbarch *gdbarch, CORE_ADDR func_addr,