mirror of
https://sourceware.org/git/binutils-gdb.git
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c765fdb902
defs.h includes utils.h, and utils.h includes exceptions.h. All GDB .c files include defs.h as their first line, so no file other than utils.h needs to include exceptions.h. This commit removes all such inclusions. gdb/ChangeLog: * ada-lang.c: Do not include exceptions.h. * ada-valprint.c: Likewise. * amd64-tdep.c: Likewise. * auto-load.c: Likewise. * block.c: Likewise. * break-catch-throw.c: Likewise. * breakpoint.c: Likewise. * btrace.c: Likewise. * c-lang.c: Likewise. * cli/cli-cmds.c: Likewise. * cli/cli-interp.c: Likewise. * cli/cli-script.c: Likewise. * completer.c: Likewise. * corefile.c: Likewise. * corelow.c: Likewise. * cp-abi.c: Likewise. * cp-support.c: Likewise. * cp-valprint.c: Likewise. * darwin-nat.c: Likewise. * dwarf2-frame-tailcall.c: Likewise. * dwarf2-frame.c: Likewise. * dwarf2loc.c: Likewise. * dwarf2read.c: Likewise. * eval.c: Likewise. * event-loop.c: Likewise. * event-top.c: Likewise. * f-valprint.c: Likewise. * frame-unwind.c: Likewise. * frame.c: Likewise. * gdbtypes.c: Likewise. * gnu-v2-abi.c: Likewise. * gnu-v3-abi.c: Likewise. * guile/scm-auto-load.c: Likewise. * guile/scm-breakpoint.c: Likewise. * guile/scm-cmd.c: Likewise. * guile/scm-frame.c: Likewise. * guile/scm-lazy-string.c: Likewise. * guile/scm-param.c: Likewise. * guile/scm-symbol.c: Likewise. * guile/scm-type.c: Likewise. * hppa-hpux-tdep.c: Likewise. * i386-tdep.c: Likewise. * inf-loop.c: Likewise. * infcall.c: Likewise. * infcmd.c: Likewise. * infrun.c: Likewise. * interps.c: Likewise. * interps.h: Likewise. * jit.c: Likewise. * linespec.c: Likewise. * linux-nat.c: Likewise. * linux-thread-db.c: Likewise. * m32r-rom.c: Likewise. * main.c: Likewise. * memory-map.c: Likewise. * mi/mi-cmd-break.c: Likewise. * mi/mi-cmd-stack.c: Likewise. * mi/mi-interp.c: Likewise. * mi/mi-main.c: Likewise. * monitor.c: Likewise. * nto-procfs.c: Likewise. * objc-lang.c: Likewise. * p-valprint.c: Likewise. * parse.c: Likewise. * ppc-linux-tdep.c: Likewise. * printcmd.c: Likewise. * probe.c: Likewise. * python/py-auto-load.c: Likewise. * python/py-breakpoint.c: Likewise. * python/py-cmd.c: Likewise. * python/py-finishbreakpoint.c: Likewise. * python/py-frame.c: Likewise. * python/py-framefilter.c: Likewise. * python/py-function.c: Likewise. * python/py-gdb-readline.c: Likewise. * python/py-inferior.c: Likewise. * python/py-infthread.c: Likewise. * python/py-lazy-string.c: Likewise. * python/py-linetable.c: Likewise. * python/py-param.c: Likewise. * python/py-prettyprint.c: Likewise. * python/py-symbol.c: Likewise. * python/py-type.c: Likewise. * python/py-value.c: Likewise. * python/python-internal.h: Likewise. * python/python.c: Likewise. * record-btrace.c: Likewise. * record-full.c: Likewise. * regcache.c: Likewise. * remote-fileio.c: Likewise. * remote-mips.c: Likewise. * remote.c: Likewise. * rs6000-aix-tdep.c: Likewise. * rs6000-nat.c: Likewise. * skip.c: Likewise. * solib-darwin.c: Likewise. * solib-dsbt.c: Likewise. * solib-frv.c: Likewise. * solib-ia64-hpux.c: Likewise. * solib-spu.c: Likewise. * solib-svr4.c: Likewise. * solib.c: Likewise. * spu-tdep.c: Likewise. * stack.c: Likewise. * stap-probe.c: Likewise. * symfile-mem.c: Likewise. * symmisc.c: Likewise. * target.c: Likewise. * thread.c: Likewise. * top.c: Likewise. * tracepoint.c: Likewise. * tui/tui-interp.c: Likewise. * typeprint.c: Likewise. * utils.c: Likewise. * valarith.c: Likewise. * valops.c: Likewise. * valprint.c: Likewise. * value.c: Likewise. * varobj.c: Likewise. * windows-nat.c: Likewise. * xml-support.c: Likewise.
531 lines
14 KiB
C
531 lines
14 KiB
C
/* Core dump and executable file functions above target vector, for GDB.
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Copyright (C) 1986-2014 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
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 3 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.
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||
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||
You should have received a copy of the GNU General Public License
|
||
along with this program. If not, see <http://www.gnu.org/licenses/>. */
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||
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#include "defs.h"
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#include <signal.h>
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#include <fcntl.h>
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#include "inferior.h"
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#include "symtab.h"
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#include "command.h"
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#include "gdbcmd.h"
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#include "bfd.h"
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#include "target.h"
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#include "gdbcore.h"
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#include "dis-asm.h"
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#include <sys/stat.h>
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#include "completer.h"
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#include "observer.h"
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#include "cli/cli-utils.h"
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/* Local function declarations. */
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||
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extern void _initialize_core (void);
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/* You can have any number of hooks for `exec_file_command' command to
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call. If there's only one hook, it is set in exec_file_display
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hook. If there are two or more hooks, they are set in
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exec_file_extra_hooks[], and deprecated_exec_file_display_hook is
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set to a function that calls all of them. This extra complexity is
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needed to preserve compatibility with old code that assumed that
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only one hook could be set, and which called
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deprecated_exec_file_display_hook directly. */
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typedef void (*hook_type) (const char *);
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hook_type deprecated_exec_file_display_hook; /* The original hook. */
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static hook_type *exec_file_extra_hooks; /* Array of additional
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hooks. */
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static int exec_file_hook_count = 0; /* Size of array. */
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/* Binary file diddling handle for the core file. */
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bfd *core_bfd = NULL;
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/* corelow.c target. It is never NULL after GDB initialization. */
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struct target_ops *core_target;
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/* Backward compatability with old way of specifying core files. */
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void
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core_file_command (char *filename, int from_tty)
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{
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dont_repeat (); /* Either way, seems bogus. */
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gdb_assert (core_target != NULL);
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if (!filename)
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(core_target->to_detach) (core_target, filename, from_tty);
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else
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(core_target->to_open) (filename, from_tty);
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}
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/* If there are two or more functions that wish to hook into
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exec_file_command, this function will call all of the hook
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functions. */
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static void
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call_extra_exec_file_hooks (const char *filename)
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{
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int i;
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for (i = 0; i < exec_file_hook_count; i++)
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(*exec_file_extra_hooks[i]) (filename);
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}
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/* Call this to specify the hook for exec_file_command to call back.
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This is called from the x-window display code. */
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void
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specify_exec_file_hook (void (*hook) (const char *))
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{
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hook_type *new_array;
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if (deprecated_exec_file_display_hook != NULL)
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{
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/* There's already a hook installed. Arrange to have both it
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and the subsequent hooks called. */
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if (exec_file_hook_count == 0)
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{
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/* If this is the first extra hook, initialize the hook
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array. */
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exec_file_extra_hooks = (hook_type *)
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xmalloc (sizeof (hook_type));
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exec_file_extra_hooks[0] = deprecated_exec_file_display_hook;
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deprecated_exec_file_display_hook = call_extra_exec_file_hooks;
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exec_file_hook_count = 1;
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||
}
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/* Grow the hook array by one and add the new hook to the end.
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Yes, it's inefficient to grow it by one each time but since
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||
this is hardly ever called it's not a big deal. */
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exec_file_hook_count++;
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new_array = (hook_type *)
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xrealloc (exec_file_extra_hooks,
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exec_file_hook_count * sizeof (hook_type));
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exec_file_extra_hooks = new_array;
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||
exec_file_extra_hooks[exec_file_hook_count - 1] = hook;
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||
}
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else
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deprecated_exec_file_display_hook = hook;
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||
}
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void
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reopen_exec_file (void)
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||
{
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char *filename;
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int res;
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struct stat st;
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struct cleanup *cleanups;
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/* Don't do anything if there isn't an exec file. */
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if (exec_bfd == NULL)
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return;
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/* If the timestamp of the exec file has changed, reopen it. */
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filename = xstrdup (bfd_get_filename (exec_bfd));
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cleanups = make_cleanup (xfree, filename);
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res = stat (filename, &st);
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if (exec_bfd_mtime && exec_bfd_mtime != st.st_mtime)
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exec_file_attach (filename, 0);
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else
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||
/* If we accessed the file since last opening it, close it now;
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||
this stops GDB from holding the executable open after it
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||
exits. */
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bfd_cache_close_all ();
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do_cleanups (cleanups);
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||
}
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/* If we have both a core file and an exec file,
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print a warning if they don't go together. */
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||
void
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validate_files (void)
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||
{
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if (exec_bfd && core_bfd)
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||
{
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if (!core_file_matches_executable_p (core_bfd, exec_bfd))
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warning (_("core file may not match specified executable file."));
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else if (bfd_get_mtime (exec_bfd) > bfd_get_mtime (core_bfd))
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warning (_("exec file is newer than core file."));
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}
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}
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/* Return the name of the executable file as a string.
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ERR nonzero means get error if there is none specified;
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otherwise return 0 in that case. */
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char *
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get_exec_file (int err)
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{
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if (exec_filename)
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return exec_filename;
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if (!err)
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return NULL;
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error (_("No executable file specified.\n\
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Use the \"file\" or \"exec-file\" command."));
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return NULL;
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||
}
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||
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||
char *
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memory_error_message (enum target_xfer_status err,
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||
struct gdbarch *gdbarch, CORE_ADDR memaddr)
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||
{
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||
switch (err)
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||
{
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||
case TARGET_XFER_E_IO:
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/* Actually, address between memaddr and memaddr + len was out of
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bounds. */
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return xstrprintf (_("Cannot access memory at address %s"),
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paddress (gdbarch, memaddr));
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case TARGET_XFER_UNAVAILABLE:
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return xstrprintf (_("Memory at address %s unavailable."),
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paddress (gdbarch, memaddr));
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default:
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internal_error (__FILE__, __LINE__,
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"unhandled target_xfer_status: %s (%s)",
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target_xfer_status_to_string (err),
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plongest (err));
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}
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}
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/* Report a memory error by throwing a suitable exception. */
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void
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memory_error (enum target_xfer_status err, CORE_ADDR memaddr)
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{
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char *str;
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enum errors exception = GDB_NO_ERROR;
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/* Build error string. */
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str = memory_error_message (err, target_gdbarch (), memaddr);
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make_cleanup (xfree, str);
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/* Choose the right error to throw. */
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switch (err)
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{
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case TARGET_XFER_E_IO:
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exception = MEMORY_ERROR;
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break;
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case TARGET_XFER_UNAVAILABLE:
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exception = NOT_AVAILABLE_ERROR;
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break;
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}
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/* Throw it. */
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throw_error (exception, ("%s"), str);
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}
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/* Same as target_read_memory, but report an error if can't read. */
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void
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read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
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{
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ULONGEST xfered = 0;
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while (xfered < len)
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||
{
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enum target_xfer_status status;
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ULONGEST xfered_len;
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status = target_xfer_partial (current_target.beneath,
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TARGET_OBJECT_MEMORY, NULL,
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myaddr + xfered, NULL,
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memaddr + xfered, len - xfered,
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&xfered_len);
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if (status != TARGET_XFER_OK)
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memory_error (status == TARGET_XFER_EOF ? TARGET_XFER_E_IO : status,
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memaddr + xfered);
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xfered += xfered_len;
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QUIT;
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}
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}
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/* Same as target_read_stack, but report an error if can't read. */
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void
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read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
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{
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int status;
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status = target_read_stack (memaddr, myaddr, len);
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if (status != 0)
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memory_error (status, memaddr);
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}
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/* Same as target_read_code, but report an error if can't read. */
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void
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read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
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{
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int status;
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status = target_read_code (memaddr, myaddr, len);
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if (status != 0)
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memory_error (status, memaddr);
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}
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/* Read memory at MEMADDR of length LEN and put the contents in
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RETURN_VALUE. Return 0 if MEMADDR couldn't be read and non-zero
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if successful. */
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int
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safe_read_memory_integer (CORE_ADDR memaddr, int len,
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enum bfd_endian byte_order,
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LONGEST *return_value)
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{
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gdb_byte buf[sizeof (LONGEST)];
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if (target_read_memory (memaddr, buf, len))
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return 0;
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*return_value = extract_signed_integer (buf, len, byte_order);
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return 1;
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}
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LONGEST
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read_memory_integer (CORE_ADDR memaddr, int len,
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enum bfd_endian byte_order)
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{
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gdb_byte buf[sizeof (LONGEST)];
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read_memory (memaddr, buf, len);
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return extract_signed_integer (buf, len, byte_order);
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}
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ULONGEST
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read_memory_unsigned_integer (CORE_ADDR memaddr, int len,
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enum bfd_endian byte_order)
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{
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gdb_byte buf[sizeof (ULONGEST)];
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read_memory (memaddr, buf, len);
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return extract_unsigned_integer (buf, len, byte_order);
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}
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LONGEST
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read_code_integer (CORE_ADDR memaddr, int len,
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enum bfd_endian byte_order)
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{
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gdb_byte buf[sizeof (LONGEST)];
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read_code (memaddr, buf, len);
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return extract_signed_integer (buf, len, byte_order);
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}
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ULONGEST
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read_code_unsigned_integer (CORE_ADDR memaddr, int len,
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enum bfd_endian byte_order)
|
||
{
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gdb_byte buf[sizeof (ULONGEST)];
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read_code (memaddr, buf, len);
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return extract_unsigned_integer (buf, len, byte_order);
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}
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|
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void
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read_memory_string (CORE_ADDR memaddr, char *buffer, int max_len)
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{
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char *cp;
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int i;
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int cnt;
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cp = buffer;
|
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while (1)
|
||
{
|
||
if (cp - buffer >= max_len)
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{
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buffer[max_len - 1] = '\0';
|
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break;
|
||
}
|
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cnt = max_len - (cp - buffer);
|
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if (cnt > 8)
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cnt = 8;
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read_memory (memaddr + (int) (cp - buffer), (gdb_byte *) cp, cnt);
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for (i = 0; i < cnt && *cp; i++, cp++)
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; /* null body */
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if (i < cnt && !*cp)
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break;
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}
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}
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CORE_ADDR
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read_memory_typed_address (CORE_ADDR addr, struct type *type)
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{
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gdb_byte *buf = alloca (TYPE_LENGTH (type));
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read_memory (addr, buf, TYPE_LENGTH (type));
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return extract_typed_address (buf, type);
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}
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/* Same as target_write_memory, but report an error if can't
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write. */
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void
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write_memory (CORE_ADDR memaddr,
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const bfd_byte *myaddr, ssize_t len)
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||
{
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int status;
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status = target_write_memory (memaddr, myaddr, len);
|
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if (status != 0)
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memory_error (status, memaddr);
|
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}
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|
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/* Same as write_memory, but notify 'memory_changed' observers. */
|
||
|
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void
|
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write_memory_with_notification (CORE_ADDR memaddr, const bfd_byte *myaddr,
|
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ssize_t len)
|
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{
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write_memory (memaddr, myaddr, len);
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observer_notify_memory_changed (current_inferior (), memaddr, len, myaddr);
|
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}
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|
||
/* Store VALUE at ADDR in the inferior as a LEN-byte unsigned
|
||
integer. */
|
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void
|
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write_memory_unsigned_integer (CORE_ADDR addr, int len,
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enum bfd_endian byte_order,
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ULONGEST value)
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{
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gdb_byte *buf = alloca (len);
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|
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store_unsigned_integer (buf, len, byte_order, value);
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write_memory (addr, buf, len);
|
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}
|
||
|
||
/* Store VALUE at ADDR in the inferior as a LEN-byte signed
|
||
integer. */
|
||
void
|
||
write_memory_signed_integer (CORE_ADDR addr, int len,
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enum bfd_endian byte_order,
|
||
LONGEST value)
|
||
{
|
||
gdb_byte *buf = alloca (len);
|
||
|
||
store_signed_integer (buf, len, byte_order, value);
|
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write_memory (addr, buf, len);
|
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}
|
||
|
||
/* The current default bfd target. Points to storage allocated for
|
||
gnutarget_string. */
|
||
char *gnutarget;
|
||
|
||
/* Same thing, except it is "auto" not NULL for the default case. */
|
||
static char *gnutarget_string;
|
||
static void
|
||
show_gnutarget_string (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c,
|
||
const char *value)
|
||
{
|
||
fprintf_filtered (file,
|
||
_("The current BFD target is \"%s\".\n"), value);
|
||
}
|
||
|
||
static void set_gnutarget_command (char *, int,
|
||
struct cmd_list_element *);
|
||
|
||
static void
|
||
set_gnutarget_command (char *ignore, int from_tty,
|
||
struct cmd_list_element *c)
|
||
{
|
||
char *gend = gnutarget_string + strlen (gnutarget_string);
|
||
|
||
gend = remove_trailing_whitespace (gnutarget_string, gend);
|
||
*gend = '\0';
|
||
|
||
if (strcmp (gnutarget_string, "auto") == 0)
|
||
gnutarget = NULL;
|
||
else
|
||
gnutarget = gnutarget_string;
|
||
}
|
||
|
||
/* A completion function for "set gnutarget". */
|
||
|
||
static VEC (char_ptr) *
|
||
complete_set_gnutarget (struct cmd_list_element *cmd,
|
||
const char *text, const char *word)
|
||
{
|
||
static const char **bfd_targets;
|
||
|
||
if (bfd_targets == NULL)
|
||
{
|
||
int last;
|
||
|
||
bfd_targets = bfd_target_list ();
|
||
for (last = 0; bfd_targets[last] != NULL; ++last)
|
||
;
|
||
|
||
bfd_targets = xrealloc (bfd_targets, (last + 2) * sizeof (const char **));
|
||
bfd_targets[last] = "auto";
|
||
bfd_targets[last + 1] = NULL;
|
||
}
|
||
|
||
return complete_on_enum (bfd_targets, text, word);
|
||
}
|
||
|
||
/* Set the gnutarget. */
|
||
void
|
||
set_gnutarget (char *newtarget)
|
||
{
|
||
if (gnutarget_string != NULL)
|
||
xfree (gnutarget_string);
|
||
gnutarget_string = xstrdup (newtarget);
|
||
set_gnutarget_command (NULL, 0, NULL);
|
||
}
|
||
|
||
void
|
||
_initialize_core (void)
|
||
{
|
||
struct cmd_list_element *c;
|
||
|
||
c = add_cmd ("core-file", class_files, core_file_command, _("\
|
||
Use FILE as core dump for examining memory and registers.\n\
|
||
No arg means have no core file. This command has been superseded by the\n\
|
||
`target core' and `detach' commands."), &cmdlist);
|
||
set_cmd_completer (c, filename_completer);
|
||
|
||
|
||
c = add_setshow_string_noescape_cmd ("gnutarget", class_files,
|
||
&gnutarget_string, _("\
|
||
Set the current BFD target."), _("\
|
||
Show the current BFD target."), _("\
|
||
Use `set gnutarget auto' to specify automatic detection."),
|
||
set_gnutarget_command,
|
||
show_gnutarget_string,
|
||
&setlist, &showlist);
|
||
set_cmd_completer (c, complete_set_gnutarget);
|
||
|
||
add_alias_cmd ("g", "gnutarget", class_files, 1, &setlist);
|
||
|
||
if (getenv ("GNUTARGET"))
|
||
set_gnutarget (getenv ("GNUTARGET"));
|
||
else
|
||
set_gnutarget ("auto");
|
||
}
|