/* Core dump and executable file functions below target vector, for GDB.
- Copyright 1986, 87, 89, 91, 92, 93, 94, 95, 96, 97, 1998
+ Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
+ 1998, 1999, 2000, 2001
Free Software Foundation, Inc.
This file is part of GDB.
#include <errno.h>
#include <signal.h>
#include <fcntl.h>
+#ifdef HAVE_SYS_FILE_H
+#include <sys/file.h> /* needed for F_OK and friends */
+#endif
#include "frame.h" /* required by inferior.h */
#include "inferior.h"
#include "symtab.h"
#include "target.h"
#include "gdbcore.h"
#include "gdbthread.h"
+#include "regcache.h"
+#include "symfile.h"
+
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
/* List of all available core_fns. On gdb startup, each core file register
reader calls add_core_fns() to register information on each core format it
static struct core_fns *core_vec = NULL;
-static void core_files_info PARAMS ((struct target_ops *));
+static void core_files_info (struct target_ops *);
#ifdef SOLIB_ADD
-static int solib_add_stub PARAMS ((PTR));
+static int solib_add_stub (PTR);
#endif
-static struct core_fns *sniff_core_bfd PARAMS ((bfd *));
+static struct core_fns *sniff_core_bfd (bfd *);
-static boolean gdb_check_format PARAMS ((bfd *));
+static boolean gdb_check_format (bfd *);
-static void core_open PARAMS ((char *, int));
+static void core_open (char *, int);
-static void core_detach PARAMS ((char *, int));
+static void core_detach (char *, int);
-static void core_close PARAMS ((int));
+static void core_close (int);
-static void get_core_registers PARAMS ((int));
+static void core_close_cleanup (void *ignore);
-static void add_to_thread_list PARAMS ((bfd *, asection *, PTR));
+static void get_core_registers (int);
-static int ignore PARAMS ((CORE_ADDR, char *));
+static void add_to_thread_list (bfd *, asection *, PTR);
-static char *core_file_to_sym_file PARAMS ((char *));
+static int ignore (CORE_ADDR, char *);
-static int core_file_thread_alive PARAMS ((int tid));
+static int core_file_thread_alive (ptid_t tid);
-static void init_core_ops PARAMS ((void));
+static void init_core_ops (void);
-void _initialize_corelow PARAMS ((void));
+void _initialize_corelow (void);
struct target_ops core_ops;
handle. */
void
-add_core_fns (cf)
- struct core_fns *cf;
+add_core_fns (struct core_fns *cf)
{
cf->next = core_file_fns;
core_file_fns = cf;
reading the core file. */
int
-default_core_sniffer (our_fns, abfd)
- struct core_fns *our_fns;
- bfd *abfd;
+default_core_sniffer (struct core_fns *our_fns, bfd *abfd)
{
int result;
/* Walk through the list of core functions to find a set that can
handle the core file open on ABFD. Default to the first one in the
- list of nothing matches. Returns pointer to set that is
+ list if nothing matches. Returns pointer to set that is
selected. */
static struct core_fns *
-sniff_core_bfd (abfd)
- bfd *abfd;
+sniff_core_bfd (bfd *abfd)
{
struct core_fns *cf;
struct core_fns *yummy = NULL;
core file handler that recognizes it. */
int
-default_check_format (abfd)
- bfd *abfd;
+default_check_format (bfd *abfd)
{
return (0);
}
/* Attempt to recognize core file formats that BFD rejects. */
static boolean
-gdb_check_format (abfd)
- bfd *abfd;
+gdb_check_format (bfd *abfd)
{
struct core_fns *cf;
/* ARGSUSED */
static void
-core_close (quitting)
- int quitting;
+core_close (int quitting)
{
char *name;
if (core_bfd)
{
- inferior_pid = 0; /* Avoid confusion from thread stuff */
+ inferior_ptid = null_ptid; /* Avoid confusion from thread stuff */
/* Clear out solib state while the bfd is still open. See
comments in clear_solib in solib.c. */
if (!bfd_close (core_bfd))
warning ("cannot close \"%s\": %s",
name, bfd_errmsg (bfd_get_error ()));
- free (name);
+ xfree (name);
core_bfd = NULL;
if (core_ops.to_sections)
{
- free ((PTR) core_ops.to_sections);
+ xfree (core_ops.to_sections);
core_ops.to_sections = NULL;
core_ops.to_sections_end = NULL;
}
core_vec = NULL;
}
+static void
+core_close_cleanup (void *ignore)
+{
+ core_close (0/*ignored*/);
+}
+
#ifdef SOLIB_ADD
/* Stub function for catch_errors around shared library hacking. FROM_TTYP
is really an int * which points to from_tty. */
static int
-solib_add_stub (from_ttyp)
- PTR from_ttyp;
+solib_add_stub (PTR from_ttyp)
{
- SOLIB_ADD (NULL, *(int *) from_ttyp, ¤t_target);
+ SOLIB_ADD (NULL, *(int *) from_ttyp, ¤t_target, auto_solib_add);
re_enable_breakpoints_in_shlibs ();
return 0;
}
list of threads in a core file. */
static void
-add_to_thread_list (abfd, asect, reg_sect_arg)
- bfd *abfd;
- asection *asect;
- PTR reg_sect_arg;
+add_to_thread_list (bfd *abfd, asection *asect, PTR reg_sect_arg)
{
int thread_id;
asection *reg_sect = (asection *) reg_sect_arg;
thread_id = atoi (bfd_section_name (abfd, asect) + 5);
- add_thread (thread_id);
+ add_thread (pid_to_ptid (thread_id));
/* Warning, Will Robinson, looking at BFD private data! */
if (reg_sect != NULL
&& asect->filepos == reg_sect->filepos) /* Did we find .reg? */
- inferior_pid = thread_id; /* Yes, make it current */
+ inferior_ptid = pid_to_ptid (thread_id); /* Yes, make it current */
}
/* This routine opens and sets up the core file bfd. */
static void
-core_open (filename, from_tty)
- char *filename;
- int from_tty;
+core_open (char *filename, int from_tty)
{
const char *p;
int siggy;
if (filename[0] != '/')
{
temp = concat (current_directory, "/", filename, NULL);
- free (filename);
+ xfree (filename);
filename = temp;
}
- old_chain = make_cleanup (free, filename);
+ old_chain = make_cleanup (xfree, filename);
- scratch_chan = open (filename, write_files ? O_RDWR : O_RDONLY, 0);
+ scratch_chan = open (filename, O_BINARY | ( write_files ? O_RDWR : O_RDONLY ), 0);
if (scratch_chan < 0)
perror_with_name (filename);
/* 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);
+ make_cleanup_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 ((make_cleanup_func) core_close, core_bfd);
+ old_chain = make_cleanup (core_close_cleanup, 0 /*ignore*/);
/* Find a suitable core file handler to munch on core_bfd */
core_vec = sniff_core_bfd (core_bfd);
error ("\"%s\": Can't find sections: %s",
bfd_get_filename (core_bfd), bfd_errmsg (bfd_get_error ()));
+ set_gdbarch_from_file (core_bfd);
+
ontop = !push_target (&core_ops);
discard_cleanups (old_chain);
siggy = bfd_core_file_failing_signal (core_bfd);
if (siggy > 0)
+ /* NOTE: target_signal_from_host() converts a target signal value
+ into gdb's internal signal value. Unfortunately gdb's internal
+ value is called ``target_signal'' and this function got the
+ name ..._from_host(). */
printf_filtered ("Program terminated with signal %d, %s.\n", siggy,
- safe_strsignal (siggy));
+ target_signal_to_string (target_signal_from_host (siggy)));
/* Build up thread list from BFD sections. */
}
static void
-core_detach (args, from_tty)
- char *args;
- int from_tty;
+core_detach (char *args, int from_tty)
{
if (args)
error ("Too many arguments");
printf_filtered ("No core file now.\n");
}
-/* Get the registers out of a core file. This is the machine-
- independent part. Fetch_core_registers is the machine-dependent
- part, typically implemented in the xm-file for each architecture. */
-/* We just get all the registers, so we don't use regno. */
+/* Try to retrieve registers from a section in core_bfd, and supply
+ them to core_vec->core_read_registers, as the register set numbered
+ WHICH.
-/* ARGSUSED */
-static void
-get_core_registers (regno)
- int regno;
-{
- sec_ptr reg_sec;
- unsigned size;
- char *the_regs;
- char secname[30];
+ If inferior_ptid is zero, do the single-threaded thing: look for a
+ section named NAME. If inferior_ptid is non-zero, do the
+ multi-threaded thing: look for a section named "NAME/PID", where
+ PID is the shortest ASCII decimal representation of inferior_ptid.
- if (core_vec == NULL)
- {
- fprintf_filtered (gdb_stderr,
- "Can't fetch registers from this type of core file\n");
- return;
- }
+ HUMAN_NAME is a human-readable name for the kind of registers the
+ NAME section contains, for use in error messages.
- /* Thread support. If inferior_pid is non-zero, then we have found a core
- file with threads (or multiple processes). In that case, we need to
- use the appropriate register section, else we just use `.reg'. */
+ If REQUIRED is non-zero, print an error if the core file doesn't
+ have a section by the appropriate name. Otherwise, just do nothing. */
- /* XXX - same thing needs to be done for floating-point (.reg2) sections. */
+static void
+get_core_register_section (char *name,
+ int which,
+ char *human_name,
+ int required)
+{
+ char section_name[100];
+ sec_ptr section;
+ bfd_size_type size;
+ char *contents;
- if (inferior_pid)
- sprintf (secname, ".reg/%d", inferior_pid);
- else
- strcpy (secname, ".reg");
-
- reg_sec = bfd_get_section_by_name (core_bfd, secname);
- if (!reg_sec)
- goto cant;
- size = bfd_section_size (core_bfd, reg_sec);
- the_regs = alloca (size);
- if (bfd_get_section_contents (core_bfd, reg_sec, the_regs, (file_ptr) 0, size) &&
- core_vec->core_read_registers != NULL)
- {
- (core_vec->core_read_registers (the_regs, size, 0,
- (unsigned) bfd_section_vma (abfd, reg_sec)));
- }
+ if (PIDGET (inferior_ptid))
+ sprintf (section_name, "%s/%d", name, PIDGET (inferior_ptid));
else
+ strcpy (section_name, name);
+
+ section = bfd_get_section_by_name (core_bfd, section_name);
+ if (! section)
{
- cant:
- fprintf_filtered (gdb_stderr,
- "Couldn't fetch registers from core file: %s\n",
- bfd_errmsg (bfd_get_error ()));
+ if (required)
+ warning ("Couldn't find %s registers in core file.\n", human_name);
+ return;
}
- /* Now do it again for the float registers, if they exist. */
- reg_sec = bfd_get_section_by_name (core_bfd, ".reg2");
- if (reg_sec)
+ size = bfd_section_size (core_bfd, section);
+ contents = alloca (size);
+ if (! bfd_get_section_contents (core_bfd, section, contents,
+ (file_ptr) 0, size))
{
- size = bfd_section_size (core_bfd, reg_sec);
- the_regs = alloca (size);
- if (bfd_get_section_contents (core_bfd, reg_sec, the_regs, (file_ptr) 0, size) &&
- core_vec->core_read_registers != NULL)
- {
- (core_vec->core_read_registers (the_regs, size, 2,
- (unsigned) bfd_section_vma (abfd, reg_sec)));
- }
- else
- {
- fprintf_filtered (gdb_stderr,
- "Couldn't fetch register set 2 from core file: %s\n",
- bfd_errmsg (bfd_get_error ()));
- }
+ warning ("Couldn't read %s registers from `%s' section in core file.\n",
+ human_name, name);
+ return;
}
- 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;
+ core_vec->core_read_registers (contents, size, which,
+ ((CORE_ADDR)
+ bfd_section_vma (core_bfd, section)));
+}
- if (!core)
- error ("No core file specified.");
- core = tilde_expand (core);
- if (core[0] != '/')
- {
- temp = concat (current_directory, "/", core, NULL);
- core = temp;
- }
+/* Get the registers out of a core file. This is the machine-
+ independent part. Fetch_core_registers is the machine-dependent
+ part, typically implemented in the xm-file for each architecture. */
- scratch_chan = open (core, write_files ? O_RDWR : O_RDONLY, 0);
- if (scratch_chan < 0)
- perror_with_name (core);
+/* We just get all the registers, so we don't use regno. */
- temp_bfd = bfd_fdopenr (core, gnutarget, scratch_chan);
- if (temp_bfd == NULL)
- perror_with_name (core);
+/* ARGSUSED */
+static void
+get_core_registers (int regno)
+{
+ int status;
- if (!bfd_check_format (temp_bfd, bfd_core))
+ if (core_vec == NULL
+ || core_vec->core_read_registers == NULL)
{
- /* 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 ()));
+ fprintf_filtered (gdb_stderr,
+ "Can't fetch registers from this type of core file\n");
+ return;
}
- /* 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);
+ get_core_register_section (".reg", 0, "general-purpose", 1);
+ get_core_register_section (".reg2", 2, "floating-point", 0);
+ get_core_register_section (".reg-xfp", 3, "extended floating-point", 0);
- /* 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;
+ registers_fetched ();
}
static void
-core_files_info (t)
- struct target_ops *t;
+core_files_info (struct target_ops *t)
{
print_section_info (t, core_bfd);
}
`gdb internal error' (since generic_mourn calls breakpoint_init_inferior). */
static int
-ignore (addr, contents)
- CORE_ADDR addr;
- char *contents;
+ignore (CORE_ADDR addr, char *contents)
{
return 0;
}
behaviour.
*/
static int
-core_file_thread_alive (tid)
- int tid;
+core_file_thread_alive (ptid_t tid)
{
return 1;
}
/* Fill in core_ops with its defined operations and properties. */
static void
-init_core_ops ()
+init_core_ops (void)
{
core_ops.to_shortname = "core";
core_ops.to_longname = "Local core dump file";
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;
int coreops_suppress_target;
void
-_initialize_corelow ()
+_initialize_corelow (void)
{
init_core_ops ();
projects / external / binutils.git / blobdiff