old-cross-binutils/gdb/corefile.c

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/* Core dump and executable file functions above target vector, for GDB.
Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994
Free Software Foundation, Inc.
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This file is part of GDB.
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
the Free Software Foundation; either version 2 of the License, or
(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
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
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "defs.h"
* configure.in: Check for working mmap, ansi headers, string.h, strings.h, and memory.h. * configure: Regenerated. * gdb_stat.h: New file, "portable" <sys/stat.h>. * gdb_string.h: New file, "portable" <string.h>. * altos-xdep.c, arm-tdep.c, arm-xdep.c, convex-tdep.c, convex-xdep.c, coredep.c, cxux-nat.c, dbxread.c, exec.c, gould-xdep.c, hppa-tdep.c, i386aix-nat.c, i386b-nat.c, i386mach-nat.c, i386v-nat.c, infptrace.c, m88k-nat.c, main.c, mdebugread.c, objfiles.c, os9kread.c, procfs.c, pyr-xdep.c, rs6000-nat.c, source.c, standalone.c, stuff.c, sun386-nat.c, symfile.c, symm-nat.c, symm-tdep.c, symtab.c, top.c, ultra3-nat.c, ultra3-xdep.c, umax-xdep.c, xcoffread.c: Include "gdb_stat.h" instead of <sys/stat.h>. * alpha-tdep.c, breakpoint.c, buildsym.c, c-typeprint.c, ch-typeprint.c, coffread.c, command.c, core-sol2.c, core-svr4.c, core.c, corelow.c, cp-valprint.c, dbxread.c, dcache.c, demangle.c, dpx2-nat.c, dstread.c, dwarfread.c, elfread.c, environ.c, eval.c, exec.c, f-lang.c, f-typeprint.c, f-valprint.c, findvar.c, fork-child.c, gdbtypes.c, hpread.c, i386-tdep.c, infcmd.c, inflow.c, infptrace.c, infrun.c, irix5-nat.c, language.c, m2-typeprint.c, main.c, mdebugread.c, minsyms.c, mipsread.c, monitor.c, nlmread.c, objfiles.c, os9kread.c, osfsolib.c, parse.c, printcmd.c, procfs.c, regex.c, remote-adapt.c, remote-arc.c, remote-array.c, remote-bug.c, remote-e7000.c, remote-eb.c, remote-es.c, remote-hms.c, remote-mm.c, remote-os9k.c, remote-pa.c, remote-sim.c, remote-st.c, remote-udi.c, remote-utils.c, remote-vx.c, remote-vx29k.c, remote-vx68.c, remote-vx960.c, remote-vxmips.c, remote-vxsparc.c, remote.c, solib.c, somread.c, source.c, stabsread.c, stack.c, symfile.c, symmisc.c, symtab.c, target.c, top.c, typeprint.c, utils.c, valarith.c, valops.c, valprint.c, values.c, xcoffread.c: Include "gdb_string.h" instead of <string.h>. * gdbtk.c: Likewise. * config/xm-sysv4.h, i386/xm-ptx.h, m68k/xm-sun3os4.h, sparc/xm-sun4os4.h (HAVE_MMAP): Removed. * config/xm-lynx.h, config/i386/xm-ptx.h, config/m68k/nm-apollo68b.h, config/m68k/xm-hp300hpux.h, config/mips/xm-irix3.h, config/mips/xm-mips.h, config/mips/xm-news-mips.h, config/mips/xm-riscos.h, config/pa/hppah.h, config/rs6000/xm-rs6000.h, config/sparc/xm-sun4os4.h, config/sparc/xm-sun4sol2.h, config/vax/xm-vaxbsd.h, config/vax/xm-vaxult.h, config/vax/xm-vaxult2.h (MEM_FNS_DECLARED): Removed. * config/mips/xm-irix3.h, config/mips/xm-mips.h, config/pa/xm-hppah.h (memcpy, memset): Removed declarations.
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#include "gdb_string.h"
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#include <errno.h>
#include <signal.h>
Make writing to files work properly. (Fixes to BFD are also needed.) * core.c (core_open): Open file ourselves, read or r/w, depending on write_files. Use bfd_fdopenr. * gdbcore.h (write_files): New variable. * exec.c (write_files): Define variable, add set&show for it. (exec_file_command): Use write_files to open for read or r/write. Make shared library reading happen automatically. These changes are mostly from Peter Schauer <pes@regent.e-technik.tu-muenchen.de>. * inferior.h (stop_soon_quietly): Add to exported variables. * infrun.c (child_create_inferior): call solib hook, if defined. (child_attach): call solib hook, if defined. * solib.c: Include inferior.h. Add from_tty to so_list as kludge. (find_solib): Use lookup_misc_func rather than hand-rolled. (symbol_add_stub): New stub for catch_errors. (solib_add): Avoid output if !from_tty. Catch errors rather than just calling symbol_file_add and bombing. (solib_create_inferior_hook): Interface with the target process to let it read and alloc shared libs, then figure out what it did. * core.c (validate_files): Fix typo, soften warning. (Fix from Hiroto Kagotani <kagotani@cs.titech.ac.jp>.) * utils.c (fputs_demangled): Avoid duplicate printing if demangling is off. (Fix from J.T. Conklin <jtc@cayenne.com>.) * infrun.c (proceed): Cast -1 to (CORE_ADDR) before comparing. (Fix from pierre@la.tce.com (Pierre Willard).) * main.c (catch_errors): Change argument to a char * from an int, since a char * can point to a struct full of glop, but an int is not guaranteed to be able to hold a pointer. * breakpoint.c (breakpoint_cond_eval, bpstat_stop_status, breakpoint_re_set_one, breakpoint_re_set): Adapt. * core.c (core_open, solib_add_stub): Adapt. * remote-vx.c (symbol_stub, add_symbol_stub, callers): Adapt.
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#include <fcntl.h>
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#include "frame.h" /* required by inferior.h */
#include "inferior.h"
#include "symtab.h"
#include "command.h"
#include "gdbcmd.h"
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#include "bfd.h"
#include "target.h"
#include "gdbcore.h"
#include "dis-asm.h"
* Makefile.in (c-exp.tab.o): Remove notice about shift/reduce conflicts which no longer occur. gcc -Wall lint: * findvar.c (symbol_read_needs_frame), corelow.c (ignore), inflow.c (gdb_has_a_terminal): Make sure to return a value. * regex.h: Declare re_set_syntax. * printcmd.c: Include valprint.h. * infcmd.c, exec.c, maint.c, core.c: Include language.h. * maint.c: Include expression.h. * infrun.c, fork-child.c, corelow.c, inflow.c: Include thread.h. * inftarg.c: Include command.h. * coredep.c: Include value.h. * c-exp.y, m2-exp.y, ch-exp.y: Include bfd.h, symfile.h and objfiles.h. * ch-typeprint.c: Include typeprint.h. * ch-valprint.c: Include c-lang.h. * nlmread.c: Include buildsym.h. * environ.c: Include gdbcore.h. Only include defs.h once. (set_in_environ): Cast const char * to char * when passing to set_gnutarget. Remove unused variables: * printcmd.c (printf_command): args_to_vprintf. * coffread.c (coff_symfile_init): strsection. Move variables to within the #ifdefs where they are used: * symtab.c (gdb_mangle_name): opname. * inftarg.c (child_attach): pid and exec_file. * inftarg.c (child_detach): siggnal. * objfiles.c (allocate_objfile): mapto, md, and fd. * objfiles.c (free_objfile): mmfd. * infrun.c (wait_for_inferior): Include BPSTAT_WHAT_LAST in switch. * infrun.c (wait_for_inferior): Remove unused same_pid label. * inferior.h: Declare set_sigint_trap and clear_sigint_trap. * parser-defs.h: Declare write_exp_elt_block. * stabsread.h: Declare elfstab_offset_sections and coffstab_build_psymtabs.
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#include "language.h"
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extern char registers[];
/* Local function declarations. */
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static void call_extra_exec_file_hooks PARAMS ((char *filename));
/* You can have any number of hooks for `exec_file_command' command to call.
If there's only one hook, it is set in exec_file_display hook.
If there are two or more hooks, they are set in exec_file_extra_hooks[],
and exec_file_display_hook is set to a function that calls all of them.
This extra complexity is needed to preserve compatibility with
old code that assumed that only one hook could be set, and which called
exec_file_display_hook directly. */
typedef void (*hook_type) PARAMS ((char *));
hook_type exec_file_display_hook; /* the original hook */
static hook_type *exec_file_extra_hooks; /* array of additional hooks */
static int exec_file_hook_count = 0; /* size of array */
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/* Binary file diddling handle for the core file. */
bfd *core_bfd = NULL;
/* Backward compatability with old way of specifying core files. */
void
core_file_command (filename, from_tty)
char *filename;
int from_tty;
{
struct target_ops *t;
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dont_repeat (); /* Either way, seems bogus. */
t = find_core_target ();
if (t != NULL)
if (!filename)
(t->to_detach) (filename, from_tty);
else
(t->to_open) (filename, from_tty);
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else
error ("GDB can't read core files on this machine.");
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}
/* If there are two or more functions that wish to hook into exec_file_command,
* this function will call all of the hook functions. */
static void
call_extra_exec_file_hooks (filename)
char *filename;
{
int i;
for (i = 0; i < exec_file_hook_count; i++)
(*exec_file_extra_hooks[i])(filename);
}
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/* Call this to specify the hook for exec_file_command to call back.
This is called from the x-window display code. */
void
specify_exec_file_hook (hook)
void (*hook) PARAMS ((char *));
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{
hook_type *new_array;
if (exec_file_display_hook != NULL)
{
/* There's already a hook installed. Arrange to have both it
* and the subsequent hooks called. */
if (exec_file_hook_count == 0)
{
/* If this is the first extra hook, initialize the hook array. */
exec_file_extra_hooks = (hook_type *) xmalloc (sizeof(hook_type));
exec_file_extra_hooks[0] = exec_file_display_hook;
exec_file_display_hook = call_extra_exec_file_hooks;
exec_file_hook_count = 1;
}
/* Grow the hook array by one and add the new hook to the end.
Yes, it's inefficient to grow it by one each time but since
this is hardly ever called it's not a big deal. */
exec_file_hook_count++;
new_array =
(hook_type *) xrealloc (exec_file_extra_hooks,
exec_file_hook_count * sizeof(hook_type));
exec_file_extra_hooks = new_array;
exec_file_extra_hooks[exec_file_hook_count - 1] = hook;
}
else
exec_file_display_hook = hook;
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}
/* The exec file must be closed before running an inferior.
If it is needed again after the inferior dies, it must
be reopened. */
void
close_exec_file ()
{
#if 0 /* FIXME */
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if (exec_bfd)
bfd_tempclose (exec_bfd);
#endif
}
void
reopen_exec_file ()
{
#if 0 /* FIXME */
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if (exec_bfd)
bfd_reopen (exec_bfd);
#endif
}
/* If we have both a core file and an exec file,
print a warning if they don't go together. */
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void
validate_files ()
{
if (exec_bfd && core_bfd)
{
Make writing to files work properly. (Fixes to BFD are also needed.) * core.c (core_open): Open file ourselves, read or r/w, depending on write_files. Use bfd_fdopenr. * gdbcore.h (write_files): New variable. * exec.c (write_files): Define variable, add set&show for it. (exec_file_command): Use write_files to open for read or r/write. Make shared library reading happen automatically. These changes are mostly from Peter Schauer <pes@regent.e-technik.tu-muenchen.de>. * inferior.h (stop_soon_quietly): Add to exported variables. * infrun.c (child_create_inferior): call solib hook, if defined. (child_attach): call solib hook, if defined. * solib.c: Include inferior.h. Add from_tty to so_list as kludge. (find_solib): Use lookup_misc_func rather than hand-rolled. (symbol_add_stub): New stub for catch_errors. (solib_add): Avoid output if !from_tty. Catch errors rather than just calling symbol_file_add and bombing. (solib_create_inferior_hook): Interface with the target process to let it read and alloc shared libs, then figure out what it did. * core.c (validate_files): Fix typo, soften warning. (Fix from Hiroto Kagotani <kagotani@cs.titech.ac.jp>.) * utils.c (fputs_demangled): Avoid duplicate printing if demangling is off. (Fix from J.T. Conklin <jtc@cayenne.com>.) * infrun.c (proceed): Cast -1 to (CORE_ADDR) before comparing. (Fix from pierre@la.tce.com (Pierre Willard).) * main.c (catch_errors): Change argument to a char * from an int, since a char * can point to a struct full of glop, but an int is not guaranteed to be able to hold a pointer. * breakpoint.c (breakpoint_cond_eval, bpstat_stop_status, breakpoint_re_set_one, breakpoint_re_set): Adapt. * core.c (core_open, solib_add_stub): Adapt. * remote-vx.c (symbol_stub, add_symbol_stub, callers): Adapt.
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if (!core_file_matches_executable_p (core_bfd, exec_bfd))
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))
warning ("exec file is newer than core file.");
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}
}
/* Return the name of the executable file as a string.
ERR nonzero means get error if there is none specified;
otherwise return 0 in that case. */
char *
get_exec_file (err)
int err;
{
if (exec_bfd) return bfd_get_filename(exec_bfd);
if (!err) return NULL;
error ("No executable file specified.\n\
Use the \"file\" or \"exec-file\" command.");
return NULL;
}
/* Report a memory error with error(). */
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void
memory_error (status, memaddr)
int status;
CORE_ADDR memaddr;
{
if (status == EIO)
{
/* Actually, address between memaddr and memaddr + len
was out of bounds. */
error_begin ();
printf_filtered ("Cannot access memory at address ");
print_address_numeric (memaddr, 1, gdb_stdout);
printf_filtered (".\n");
return_to_top_level (RETURN_ERROR);
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}
else
{
error_begin ();
printf_filtered ("Error accessing memory address ");
print_address_numeric (memaddr, 1, gdb_stdout);
printf_filtered (": %s.\n",
safe_strerror (status));
return_to_top_level (RETURN_ERROR);
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}
}
/* Same as target_read_memory, but report an error if can't read. */
void
read_memory (memaddr, myaddr, len)
CORE_ADDR memaddr;
char *myaddr;
int len;
{
int status;
status = target_read_memory (memaddr, myaddr, len);
if (status != 0)
memory_error (status, memaddr);
}
* Makefile.in configure configure.in: Remove ENABLE_CLIBS, ENABLE_OBS, and THREAD_DB_OBS. These are consolidated into LIBS and CONFIG_OBS. * configure configure.in: Clean up test cases around thread support. start-sanitize-v850 * configure.tgt (v850-*-*): Include v850ice.o and v850.lib if host is Windows. end-sanitize-v850 * c-valprint.c ch-valprint.c cp-valprint.c eval.c expprint.c printcmd.c valops.c value.h values.c: Add bfd_section arg to value_at and value_at_lazy. * coffread.c dbxread.c elfread.c mdebugread.c minsyms.c symtab.h: Add bfd_section arg to prim_record_minimal_symbol_and_info. * corefile.c gdbcore.h printcmd.c valops.c: Use read_memory_section instead of read_memory. It takes a bfd_section arg. * coffread.c dbxread.c elfread.c gdb-stabs.h objfiles.h: Remove unnecessary cast for assignment of struct dbx_symfile_info. Struct objfile now uses a real pointer instead of PTR for this element. * dbxread.c (dbx_symfile_init): Stash bfd section pointers for text, data and bss into dbx_symfile_info. * exec.c (xfer_memory): Handle transfers for user-specified sections. * findvar.c (read_var_value locate_var_value): Copy bfd section from the symbol to the value. * gdb-stabs.h: Add section pointers for text, data and bss sections. * maint.c (translate address command): Add test code for overlay address translation. * printcmd.c (do_examine do_one_display): Now takes a bfd section arg. * (print_formatted x_command): Record current section along with current address for repeated commands. * sparc-nat.c (fetch_inferior_registers): Change target_xfer_memory to target_{read write}_memory to allow changes to target_xfer_memory interface for section info. * symmisc.c (dump_msymbols print_symbol): Print section assocaited with symbol. * symtab.c (fixup_symbol_section): New routine to add section info to symbols returned by lookup_symbol. * symtab.h (struct general_symbol_info): Add bfd section to symbols. * target.c target.h (target_xfer_memory): Add bfd section to args. * (target_read_memory_section): New routine to read data from a specific section. * (target_memory_bfd_section): New global variable to pass bfd section in to targets. * valarith.c (value_add value_addr value_array): Preserve bfd section when computing new value. * value.h (struct value): Add bfd section to values. * values.c (allocate_value value_copy): Initialize/preserve bfd section. * (unpack_double): Clean up _MSC_VER conditionals to remove duplicate code. start-sanitize-v850 * v850ice.c: New module to support communication with NEC's PC-based ICE. * config/v850/tm-v850.h (REGISTER_NAMES): Replace sp, gp, fp, and ep names with rxx names. sp and fp are renamed via a different mechanism. end-sanitize-v850
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void
read_memory_section (memaddr, myaddr, len, bfd_section)
CORE_ADDR memaddr;
char *myaddr;
int len;
asection *bfd_section;
{
int status;
status = target_read_memory_section (memaddr, myaddr, len, bfd_section);
if (status != 0)
memory_error (status, memaddr);
}
/* Like target_read_memory, but slightly different parameters. */
int
dis_asm_read_memory (memaddr, myaddr, len, info)
bfd_vma memaddr;
bfd_byte *myaddr;
int len;
disassemble_info *info;
{
return target_read_memory (memaddr, (char *) myaddr, len);
}
/* Like memory_error with slightly different parameters. */
void
dis_asm_memory_error (status, memaddr, info)
int status;
bfd_vma memaddr;
disassemble_info *info;
{
memory_error (status, memaddr);
}
/* Like print_address with slightly different parameters. */
void
dis_asm_print_address (addr, info)
bfd_vma addr;
struct disassemble_info *info;
{
print_address (addr, info->stream);
}
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/* Same as target_write_memory, but report an error if can't write. */
void
write_memory (memaddr, myaddr, len)
CORE_ADDR memaddr;
char *myaddr;
int len;
{
int status;
status = target_write_memory (memaddr, myaddr, len);
if (status != 0)
memory_error (status, memaddr);
}
/* Read an integer from debugged memory, given address and number of bytes. */
LONGEST
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read_memory_integer (memaddr, len)
CORE_ADDR memaddr;
int len;
{
char buf[sizeof (LONGEST)];
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read_memory (memaddr, buf, len);
return extract_signed_integer (buf, len);
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}
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ULONGEST
read_memory_unsigned_integer (memaddr, len)
CORE_ADDR memaddr;
int len;
{
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char buf[sizeof (ULONGEST)];
read_memory (memaddr, buf, len);
return extract_unsigned_integer (buf, len);
}
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#if 0
/* Enable after 4.12. It is not tested. */
/* Search code. Targets can just make this their search function, or
if the protocol has a less general search function, they can call this
in the cases it can't handle. */
void
generic_search (len, data, mask, startaddr, increment, lorange, hirange
addr_found, data_found)
int len;
char *data;
char *mask;
CORE_ADDR startaddr;
int increment;
CORE_ADDR lorange;
CORE_ADDR hirange;
CORE_ADDR *addr_found;
char *data_found;
{
int i;
CORE_ADDR curaddr = startaddr;
while (curaddr >= lorange && curaddr < hirange)
{
read_memory (curaddr, data_found, len);
for (i = 0; i < len; ++i)
if ((data_found[i] & mask[i]) != data[i])
goto try_again;
/* It matches. */
*addr_found = curaddr;
return;
try_again:
curaddr += increment;
}
*addr_found = (CORE_ADDR)0;
return;
}
#endif /* 0 */
/* 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 set_gnutarget_command
PARAMS ((char *, int, struct cmd_list_element *));
static void
set_gnutarget_command (ignore, from_tty, c)
char *ignore;
int from_tty;
struct cmd_list_element *c;
{
if (STREQ (gnutarget_string, "auto"))
gnutarget = NULL;
else
gnutarget = gnutarget_string;
}
/* Set the gnutarget. */
void
set_gnutarget (newtarget)
char *newtarget;
{
if (gnutarget_string != NULL)
free (gnutarget_string);
gnutarget_string = savestring (newtarget, strlen (newtarget));
set_gnutarget_command (NULL, 0, NULL);
}
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void
_initialize_core()
{
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\
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No arg means have no core file. This command has been superseded by the\n\
`target core' and `detach' commands.", &cmdlist);
c->completer = filename_completer;
c = add_set_cmd ("gnutarget", class_files, var_string_noescape,
(char *) &gnutarget_string,
"Set the current BFD target.\n\
Use `set gnutarget auto' to specify automatic detection.",
&setlist);
c->function.sfunc = set_gnutarget_command;
add_show_from_set (c, &showlist);
if (getenv ("GNUTARGET"))
set_gnutarget (getenv ("GNUTARGET"));
else
set_gnutarget ("auto");
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}