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gdb-3.3

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gdb-3.3
1989-09-30 00:00:00 +00:00
committed by Pedro Alves
parent e91b87a368
commit 4187119d59
167 changed files with 39992 additions and 35871 deletions
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103
gdb/core.c
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@@ -1,26 +1,26 @@
/* Work with core dump and executable files, for GDB.
Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc.
GDB is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY. No author or distributor accepts responsibility to anyone
for the consequences of using it or for whether it serves any
particular purpose or works at all, unless he says so in writing.
Refer to the GDB General Public License for full details.
This file is part of GDB.
Everyone is granted permission to copy, modify and redistribute GDB,
but only under the conditions described in the GDB General Public
License. A copy of this license is supposed to have been given to you
along with GDB so you can know your rights and responsibilities. It
should be in a file named COPYING. Among other things, the copyright
notice and this notice must be preserved on all copies.
GDB 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 1, or (at your option)
any later version.
In other words, go ahead and share GDB, but don't try to stop
anyone else from sharing it farther. Help stamp out software hoarding!
*/
GDB 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 GDB; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "defs.h"
#include "param.h"
#include "gdbcore.h"
#include "frame.h" /* required by inferior.h */
#include "inferior.h"
#ifdef USG
#include <sys/types.h>
@@ -32,7 +32,6 @@ anyone else from sharing it farther. Help stamp out software hoarding!
#else
#include <a.out.h>
#endif
#ifndef N_MAGIC
#ifdef COFF_FORMAT
#define N_MAGIC(exec) ((exec).magic)
@@ -40,7 +39,6 @@ anyone else from sharing it farther. Help stamp out software hoarding!
#define N_MAGIC(exec) ((exec).a_magic)
#endif
#endif
#include <stdio.h>
#include <signal.h>
#include <sys/param.h>
@@ -48,16 +46,6 @@ anyone else from sharing it farther. Help stamp out software hoarding!
#include <sys/file.h>
#include <sys/stat.h>
#ifdef UNISOFT_ASSHOLES
#define PMMU
#define NEW_PMMU
#include <sys/seg.h> /* Required for user.ps */
#include <sys/time.h> /* '' */
#include <sys/mmu.h> /* '' */
#include <sys/reg.h>
#define mc68881 /* Required to get float in user.ps */
#endif
#ifdef UMAX_CORE
#include <sys/ptrace.h>
#else
@@ -73,8 +61,10 @@ anyone else from sharing it farther. Help stamp out software hoarding!
#endif /* no N_DATADDR */
#ifndef COFF_FORMAT
#ifndef AOUTHDR
#define AOUTHDR struct exec
#endif
#endif
extern char *sys_siglist[];
@@ -238,18 +228,22 @@ files_info ()
printf ("Executable file \"%s\".\n", execfile);
else
printf ("No executable file\n");
if (corefile)
printf ("Core dump file \"%s\".\n", corefile);
else
if (corefile == 0)
printf ("No core dump file\n");
else
printf ("Core dump file \"%s\".\n", corefile);
if (have_inferior_p ())
printf ("Using the running image of the program, rather than these files.\n");
symfile = get_sym_file ();
if (symfile != 0)
printf ("Symbols from \"%s\".\n", symfile);
printf ("Symbols from \"%s\".\n", symfile);
#ifdef FILES_INFO_HOOK
if (FILES_INFO_HOOK ())
return;
#endif
if (! have_inferior_p ())
{
@@ -260,11 +254,11 @@ files_info ()
printf ("Data segment in executable from 0x%x to 0x%x.\n",
exec_data_start, exec_data_end);
if (corefile)
printf("(But since we have a core file, we're using...)\n");
printf ("(But since we have a core file, we're using...)\n");
}
if (corefile)
{
printf ("Data segment in core file from 0x%x to 0x%x.\n",
printf ("Data segment in core file from 0x%x to 0x%x.\n",
data_start, data_end);
printf ("Stack segment in core file from 0x%x to 0x%x.\n",
stack_start, stack_end);
@@ -282,8 +276,16 @@ read_memory (memaddr, myaddr, len)
char *myaddr;
int len;
{
if (len == 0)
return 0;
if (have_inferior_p ())
return read_inferior_memory (memaddr, myaddr, len);
{
if (remote_debugging)
return remote_read_inferior_memory (memaddr, myaddr, len);
else
return read_inferior_memory (memaddr, myaddr, len);
}
else
return xfer_core_file (memaddr, myaddr, len);
}
@@ -299,11 +301,17 @@ write_memory (memaddr, myaddr, len)
int len;
{
if (have_inferior_p ())
return write_inferior_memory (memaddr, myaddr, len);
{
if (remote_debugging)
return remote_write_inferior_memory (memaddr, myaddr, len);
else
return write_inferior_memory (memaddr, myaddr, len);
}
else
error ("Can write memory only when program being debugged is running.");
}
#ifndef XFER_CORE_FILE
/* Read from the program's memory (except for inferior processes).
This function is misnamed, since it only reads, never writes; and
since it will use the core file and/or executable file as necessary.
@@ -384,21 +392,29 @@ xfer_core_file (memaddr, myaddr, len)
{
i = min (len, data_start - memaddr);
}
else if (memaddr >= (corechan >= 0 ? data_end : exec_data_end)
&& memaddr < stack_start)
else if (corechan >= 0
&& memaddr >= data_end && memaddr < stack_start)
{
i = min (len, stack_start - memaddr);
}
else if (corechan < 0 && memaddr >= exec_data_end)
{
/* Since there is nothing at higher addresses than data
(without a core file or an inferior, there is no
stack, set i to do the rest of the operation now. */
i = len;
}
else if (memaddr >= stack_end && stack_end != 0)
{
i = min (len, - memaddr);
/* Since there is nothing at higher addresses than
the stack, set i to do the rest of the operation now. */
i = len;
}
else
{
/* Address did not classify into one of the known ranges.
This could be because data_start != exec_data_start
or data_end similarly. */
abort();
This shouldn't happen; we catch the endpoints. */
fatal ("Internal: Bad case logic in xfer_core_file.");
}
/* Now we know which file to use.
@@ -419,7 +435,7 @@ xfer_core_file (memaddr, myaddr, len)
}
/* If this address is for nonexistent memory,
read zeros if reading, or do nothing if writing.
(FIXME we never write.) */
Actually, we never right. */
else
{
bzero (myaddr, i);
@@ -432,6 +448,7 @@ xfer_core_file (memaddr, myaddr, len)
}
return returnval;
}
#endif /* XFER_CORE_FILE */
/* My replacement for the read system call.
Used like `read' but keeps going if `read' returns too soon. */