/* Core dump and executable file functions below target vector, for GDB.
- Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995
+ Copyright 1986, 87, 89, 91, 92, 93, 94, 95, 96, 97, 1998
Free Software Foundation, Inc.
This file is part of GDB.
#include <errno.h>
#include <signal.h>
#include <fcntl.h>
+#include <unistd.h>
#include "frame.h" /* required by inferior.h */
#include "inferior.h"
#include "symtab.h"
static void core_files_info PARAMS ((struct target_ops *));
#ifdef SOLIB_ADD
-static int solib_add_stub PARAMS ((char *));
+static int solib_add_stub PARAMS ((PTR));
#endif
static void core_open PARAMS ((char *, int));
static int ignore PARAMS ((CORE_ADDR, char *));
+static char *core_file_to_sym_file PARAMS ((char *));
+
+static int core_file_thread_alive PARAMS ((int tid));
+
+static void init_core_ops PARAMS ((void));
+
+void _initialize_corelow PARAMS ((void));
+
+struct target_ops core_ops;
+
/* Link a new core_fns into the global core_file_fns list. Called on gdb
startup by the _initialize routine in each core file register reader, to
register information about each format the the reader is prepared to
{
char *name;
- inferior_pid = 0; /* Avoid confusion from thread stuff */
-
if (core_bfd)
{
+ inferior_pid = 0; /* Avoid confusion from thread stuff */
+
name = bfd_get_filename (core_bfd);
if (!bfd_close (core_bfd))
warning ("cannot close \"%s\": %s",
static int
solib_add_stub (from_ttyp)
- char *from_ttyp;
+ PTR from_ttyp;
{
SOLIB_ADD (NULL, *(int *)from_ttyp, ¤t_target);
re_enable_breakpoints_in_shlibs ();
/* FIXME: should be checking for errors from bfd_close (for one thing,
on error it does not free all the storage associated with the
bfd). */
- make_cleanup (bfd_close, temp_bfd);
+ make_cleanup ((make_cleanup_func) bfd_close, temp_bfd);
error ("\"%s\" is not a core dump: %s",
filename, bfd_errmsg (bfd_get_error ()));
}
discard_cleanups (old_chain); /* Don't free filename any more */
unpush_target (&core_ops);
core_bfd = temp_bfd;
- old_chain = make_cleanup (core_close, core_bfd);
+ old_chain = make_cleanup ((make_cleanup_func) core_close, core_bfd);
validate_files ();
sec_ptr reg_sec;
unsigned size;
char *the_regs;
- char secname[10];
+ char secname[30];
enum bfd_flavour our_flavour = bfd_get_flavour (core_bfd);
- struct core_fns *cf;
+ struct core_fns *cf = NULL;
if (core_file_fns == NULL)
{
registers_fetched ();
}
+static char *
+core_file_to_sym_file (core)
+ char * core;
+{
+ CONST char * failing_command;
+ char * p;
+ char * temp;
+ bfd * temp_bfd;
+ int scratch_chan;
+
+ if (! core)
+ error ("No core file specified.");
+
+ core = tilde_expand (core);
+ if (core[0] != '/')
+ {
+ temp = concat (current_directory, "/", core, NULL);
+ core = temp;
+ }
+
+ scratch_chan = open (core, write_files ? O_RDWR : O_RDONLY, 0);
+ if (scratch_chan < 0)
+ perror_with_name (core);
+
+ temp_bfd = bfd_fdopenr (core, gnutarget, scratch_chan);
+ if (temp_bfd == NULL)
+ perror_with_name (core);
+
+ if (!bfd_check_format (temp_bfd, bfd_core))
+ {
+ /* Do it after the err msg */
+ /* FIXME: should be checking for errors from bfd_close (for one thing,
+ on error it does not free all the storage associated with the
+ bfd). */
+ make_cleanup ((make_cleanup_func) bfd_close, temp_bfd);
+ error ("\"%s\" is not a core dump: %s",
+ core, bfd_errmsg (bfd_get_error ()));
+ }
+
+ /* Find the data section */
+ if (build_section_table (temp_bfd, &core_ops.to_sections,
+ &core_ops.to_sections_end))
+ error ("\"%s\": Can't find sections: %s",
+ bfd_get_filename (temp_bfd), bfd_errmsg (bfd_get_error ()));
+
+ failing_command = bfd_core_file_failing_command (temp_bfd);
+
+ bfd_close (temp_bfd);
+
+ /* If we found a filename, remember that it is probably saved
+ relative to the executable that created it. If working directory
+ isn't there now, we may not be able to find the executable. Rather
+ than trying to be sauve about finding it, just check if the file
+ exists where we are now. If not, then punt and tell our client
+ we couldn't find the sym file.
+ */
+ p = (char *) failing_command;
+ if ((p != NULL) && (access (p, F_OK) != 0))
+ p = NULL;
+
+ return p;
+}
+
static void
core_files_info (t)
struct target_ops *t;
return 0;
}
-struct target_ops core_ops = {
- "core", /* to_shortname */
- "Local core dump file", /* to_longname */
- "Use a core file as a target. Specify the filename of the core file.", /* to_doc */
- core_open, /* to_open */
- core_close, /* to_close */
- find_default_attach, /* to_attach */
- core_detach, /* to_detach */
- 0, /* to_resume */
- 0, /* to_wait */
- get_core_registers, /* to_fetch_registers */
- 0, /* to_store_registers */
- 0, /* to_prepare_to_store */
- xfer_memory, /* to_xfer_memory */
- core_files_info, /* to_files_info */
- ignore, /* to_insert_breakpoint */
- ignore, /* to_remove_breakpoint */
- 0, /* to_terminal_init */
- 0, /* to_terminal_inferior */
- 0, /* to_terminal_ours_for_output */
- 0, /* to_terminal_ours */
- 0, /* to_terminal_info */
- 0, /* to_kill */
- 0, /* to_load */
- 0, /* to_lookup_symbol */
- find_default_create_inferior, /* to_create_inferior */
- 0, /* to_mourn_inferior */
- 0, /* to_can_run */
- 0, /* to_notice_signals */
- 0, /* to_thread_alive */
- 0, /* to_stop */
- core_stratum, /* to_stratum */
- 0, /* to_next */
- 0, /* to_has_all_memory */
- 1, /* to_has_memory */
- 1, /* to_has_stack */
- 1, /* to_has_registers */
- 0, /* to_has_execution */
- 0, /* to_sections */
- 0, /* to_sections_end */
- OPS_MAGIC, /* to_magic */
-};
+
+/* Okay, let's be honest: threads gleaned from a core file aren't
+ exactly lively, are they? On the other hand, if we don't claim
+ that each & every one is alive, then we don't get any of them
+ to appear in an "info thread" command, which is quite a useful
+ behaviour.
+ */
+static int
+core_file_thread_alive (tid)
+ int tid;
+{
+ return 1;
+}
+
+/* Fill in core_ops with its defined operations and properties. */
+
+static void
+init_core_ops ()
+{
+ core_ops.to_shortname = "core";
+ core_ops.to_longname = "Local core dump file";
+ core_ops.to_doc =
+ "Use a core file as a target. Specify the filename of the core file.";
+ core_ops.to_open = core_open;
+ core_ops.to_close = core_close;
+ core_ops.to_attach = find_default_attach;
+ core_ops.to_require_attach = find_default_require_attach;
+ core_ops.to_detach = core_detach;
+ core_ops.to_require_detach = find_default_require_detach;
+ core_ops.to_fetch_registers = get_core_registers;
+ core_ops.to_xfer_memory = xfer_memory;
+ core_ops.to_files_info = core_files_info;
+ core_ops.to_insert_breakpoint = ignore;
+ core_ops.to_remove_breakpoint = ignore;
+ core_ops.to_create_inferior = find_default_create_inferior;
+ core_ops.to_clone_and_follow_inferior = find_default_clone_and_follow_inferior;
+ core_ops.to_thread_alive = core_file_thread_alive;
+ core_ops.to_core_file_to_sym_file = core_file_to_sym_file;
+ core_ops.to_stratum = core_stratum;
+ core_ops.to_has_memory = 1;
+ core_ops.to_has_stack = 1;
+ core_ops.to_has_registers = 1;
+ core_ops.to_magic = OPS_MAGIC;
+}
+
+/* non-zero if we should not do the add_target call in
+ _initialize_corelow; not initialized (i.e., bss) so that
+ the target can initialize it (i.e., data) if appropriate.
+ This needs to be set at compile time because we don't know
+ for sure whether the target's initialize routine is called
+ before us or after us. */
+int coreops_suppress_target;
void
-_initialize_corelow()
+_initialize_corelow ()
{
- add_target (&core_ops);
+ init_core_ops ();
+
+ if (!coreops_suppress_target)
+ add_target (&core_ops);
}
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