d747e0af3d
* All GDB files that #include defs.h: Removed stdio.h. (defs.h): #include stdio.h. This has been tested by building GDBs for all targets hosted on Sun4. None of the build problems were related to stdio.h inclusion. (n.b. many configurations don't build for other reasons.)
165 lines
4.3 KiB
C
165 lines
4.3 KiB
C
/* Low level interface to ptrace, for GDB when running under m68k SVR2 Unix
|
||
on Altos 3068. Report bugs to Jyrki Kuoppala <jkp@cs.hut.fi>
|
||
Copyright (C) 1989, 1991 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
#include "defs.h"
|
||
#include "frame.h"
|
||
#include "inferior.h"
|
||
|
||
#ifdef USG
|
||
#include <sys/types.h>
|
||
#endif
|
||
|
||
#include <sys/param.h>
|
||
#include <sys/dir.h>
|
||
#include <signal.h>
|
||
#include <sys/ioctl.h>
|
||
#include <fcntl.h>
|
||
#ifdef USG
|
||
#include <sys/page.h>
|
||
#ifdef ALTOS
|
||
#include <sys/net.h>
|
||
#include <errno.h>
|
||
#endif
|
||
#endif
|
||
|
||
#include "gdbcore.h"
|
||
#include <sys/user.h> /* After a.out.h */
|
||
#include <sys/file.h>
|
||
#include <sys/stat.h>
|
||
|
||
|
||
/* Work with core dump and executable files, for GDB.
|
||
This code would be in core.c if it weren't machine-dependent. */
|
||
|
||
void
|
||
core_file_command (filename, from_tty)
|
||
char *filename;
|
||
int from_tty;
|
||
{
|
||
int val;
|
||
extern char registers[];
|
||
|
||
/* Discard all vestiges of any previous core file
|
||
and mark data and stack spaces as empty. */
|
||
|
||
if (corefile)
|
||
free (corefile);
|
||
corefile = 0;
|
||
|
||
if (corechan >= 0)
|
||
close (corechan);
|
||
corechan = -1;
|
||
|
||
data_start = 0;
|
||
data_end = 0;
|
||
stack_start = STACK_END_ADDR;
|
||
stack_end = STACK_END_ADDR;
|
||
|
||
/* Now, if a new core file was specified, open it and digest it. */
|
||
|
||
if (filename)
|
||
{
|
||
filename = tilde_expand (filename);
|
||
make_cleanup (free, filename);
|
||
|
||
if (have_inferior_p ())
|
||
error ("To look at a core file, you must kill the inferior with \"kill\".");
|
||
corechan = open (filename, O_RDONLY, 0);
|
||
if (corechan < 0)
|
||
perror_with_name (filename);
|
||
/* 4.2-style (and perhaps also sysV-style) core dump file. */
|
||
{
|
||
struct user u;
|
||
|
||
unsigned int reg_offset;
|
||
|
||
val = myread (corechan, &u, sizeof u);
|
||
if (val < 0)
|
||
perror_with_name ("Not a core file: reading upage");
|
||
if (val != sizeof u)
|
||
error ("Not a core file: could only read %d bytes", val);
|
||
data_start = exec_data_start;
|
||
|
||
#if !defined (NBPG)
|
||
#define NBPG NBPP
|
||
#endif
|
||
#if !defined (UPAGES)
|
||
#define UPAGES USIZE
|
||
#endif
|
||
|
||
data_end = data_start + NBPG * u.u_dsize;
|
||
stack_start = stack_end - NBPG * u.u_ssize;
|
||
data_offset = NBPG * UPAGES + exec_data_start % NBPG /* Not sure about this //jkp */;
|
||
stack_offset = NBPG * (UPAGES + u.u_dsize);
|
||
|
||
/* Some machines put an absolute address in here and some put
|
||
the offset in the upage of the regs. */
|
||
reg_offset = (int) u.u_state;
|
||
if (reg_offset > NBPG * UPAGES)
|
||
reg_offset -= KERNEL_U_ADDR;
|
||
|
||
bcopy (&u.u_exdata, &core_aouthdr, sizeof (AOUTHDR));
|
||
printf ("Core file is from \"%s\".\n", u.u_comm);
|
||
|
||
/* I don't know where to find this info.
|
||
So, for now, mark it as not available. */
|
||
N_SET_MAGIC (core_aouthdr, 0);
|
||
|
||
/* Read the register values out of the core file and store
|
||
them where `read_register' will find them. */
|
||
|
||
{
|
||
register int regno;
|
||
|
||
for (regno = 0; regno < NUM_REGS; regno++)
|
||
{
|
||
char buf[MAX_REGISTER_RAW_SIZE];
|
||
|
||
val = lseek (corechan, register_addr (regno, reg_offset), 0);
|
||
if (val < 0
|
||
|| (val = myread (corechan, buf, sizeof buf)) < 0)
|
||
{
|
||
char * buffer = (char *) alloca (strlen (reg_names[regno])
|
||
+ 30);
|
||
strcpy (buffer, "Reading register ");
|
||
strcat (buffer, reg_names[regno]);
|
||
|
||
perror_with_name (buffer);
|
||
}
|
||
|
||
supply_register (regno, buf);
|
||
}
|
||
}
|
||
}
|
||
if (filename[0] == '/')
|
||
corefile = savestring (filename, strlen (filename));
|
||
else
|
||
{
|
||
corefile = concat (current_directory, "/", filename, NULL);
|
||
}
|
||
|
||
set_current_frame ( create_new_frame (read_register (FP_REGNUM),
|
||
read_pc ()));
|
||
select_frame (get_current_frame (), 0);
|
||
validate_files ();
|
||
}
|
||
else if (from_tty)
|
||
printf ("No core file now.\n");
|
||
}
|