/* Core dump and executable file functions above target vector, for GDB.
- Copyright (C) 1986-2014 Free Software Foundation, Inc.
+ Copyright (C) 1986-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "dis-asm.h"
#include <sys/stat.h>
#include "completer.h"
-#include "exceptions.h"
-#include "observer.h"
+#include "observable.h"
#include "cli/cli-utils.h"
-
-/* Local function declarations. */
-
-extern void _initialize_core (void);
+#include "gdbarch.h"
/* 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
hooks. */
static int exec_file_hook_count = 0; /* Size of array. */
-/* Binary file diddling handle for the core file. */
-
-bfd *core_bfd = NULL;
-
-/* corelow.c target. It is never NULL after GDB initialization. */
-
-struct target_ops *core_target;
-\f
-
-/* Backward compatability with old way of specifying core files. */
-
-void
-core_file_command (char *filename, int from_tty)
-{
- dont_repeat (); /* Either way, seems bogus. */
-
- gdb_assert (core_target != NULL);
-
- if (!filename)
- (core_target->to_detach) (core_target, filename, from_tty);
- else
- (core_target->to_open) (filename, from_tty);
-}
\f
/* If there are two or more functions that wish to hook into
{
/* 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 = XNEW (hook_type);
exec_file_extra_hooks[0] = deprecated_exec_file_display_hook;
deprecated_exec_file_display_hook = call_extra_exec_file_hooks;
exec_file_hook_count = 1;
void
reopen_exec_file (void)
{
- char *filename;
int res;
struct stat st;
- struct cleanup *cleanups;
/* Don't do anything if there isn't an exec file. */
if (exec_bfd == NULL)
return;
/* If the timestamp of the exec file has changed, reopen it. */
- filename = xstrdup (bfd_get_filename (exec_bfd));
- cleanups = make_cleanup (xfree, filename);
- res = stat (filename, &st);
+ std::string filename = bfd_get_filename (exec_bfd);
+ res = stat (filename.c_str (), &st);
- if (exec_bfd_mtime && exec_bfd_mtime != st.st_mtime)
- exec_file_attach (filename, 0);
+ if (res == 0 && exec_bfd_mtime && exec_bfd_mtime != st.st_mtime)
+ exec_file_attach (filename.c_str (), 0);
else
/* If we accessed the file since last opening it, close it now;
this stops GDB from holding the executable open after it
exits. */
bfd_cache_close_all ();
-
- do_cleanups (cleanups);
}
\f
/* If we have both a core file and an exec file,
}
}
-/* 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. */
+/* See gdbsupport/common-inferior.h. */
-char *
+const char *
get_exec_file (int err)
{
if (exec_filename)
error (_("No executable file specified.\n\
Use the \"file\" or \"exec-file\" command."));
- return NULL;
}
\f
-char *
+std::string
memory_error_message (enum target_xfer_status err,
struct gdbarch *gdbarch, CORE_ADDR memaddr)
{
case TARGET_XFER_E_IO:
/* Actually, address between memaddr and memaddr + len was out of
bounds. */
- return xstrprintf (_("Cannot access memory at address %s"),
- paddress (gdbarch, memaddr));
+ return string_printf (_("Cannot access memory at address %s"),
+ paddress (gdbarch, memaddr));
case TARGET_XFER_UNAVAILABLE:
- return xstrprintf (_("Memory at address %s unavailable."),
- paddress (gdbarch, memaddr));
+ return string_printf (_("Memory at address %s unavailable."),
+ paddress (gdbarch, memaddr));
default:
internal_error (__FILE__, __LINE__,
"unhandled target_xfer_status: %s (%s)",
void
memory_error (enum target_xfer_status err, CORE_ADDR memaddr)
{
- char *str;
enum errors exception = GDB_NO_ERROR;
/* Build error string. */
- str = memory_error_message (err, target_gdbarch (), memaddr);
- make_cleanup (xfree, str);
+ std::string str = memory_error_message (err, target_gdbarch (), memaddr);
/* Choose the right error to throw. */
switch (err)
}
/* Throw it. */
- throw_error (exception, ("%s"), str);
+ throw_error (exception, ("%s"), str.c_str ());
}
-/* Same as target_read_memory, but report an error if can't read. */
+/* Helper function. */
-void
-read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
+static void
+read_memory_object (enum target_object object, CORE_ADDR memaddr,
+ gdb_byte *myaddr, ssize_t len)
{
ULONGEST xfered = 0;
enum target_xfer_status status;
ULONGEST xfered_len;
- status = target_xfer_partial (current_target.beneath,
- TARGET_OBJECT_MEMORY, NULL,
+ status = target_xfer_partial (current_top_target (), object, NULL,
myaddr + xfered, NULL,
memaddr + xfered, len - xfered,
&xfered_len);
}
}
+/* Same as target_read_memory, but report an error if can't read. */
+
+void
+read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
+{
+ read_memory_object (TARGET_OBJECT_MEMORY, memaddr, myaddr, len);
+}
+
/* Same as target_read_stack, but report an error if can't read. */
void
read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
{
- int status;
-
- status = target_read_stack (memaddr, myaddr, len);
- if (status != 0)
- memory_error (status, memaddr);
+ read_memory_object (TARGET_OBJECT_STACK_MEMORY, memaddr, myaddr, len);
}
/* Same as target_read_code, but report an error if can't read. */
void
read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len)
{
- int status;
-
- status = target_read_code (memaddr, myaddr, len);
- if (status != 0)
- memory_error (status, memaddr);
+ read_memory_object (TARGET_OBJECT_CODE_MEMORY, memaddr, myaddr, len);
}
/* Read memory at MEMADDR of length LEN and put the contents in
return 1;
}
+/* Read memory at MEMADDR of length LEN and put the contents in
+ RETURN_VALUE. Return 0 if MEMADDR couldn't be read and non-zero
+ if successful. */
+
+int
+safe_read_memory_unsigned_integer (CORE_ADDR memaddr, int len,
+ enum bfd_endian byte_order,
+ ULONGEST *return_value)
+{
+ gdb_byte buf[sizeof (ULONGEST)];
+
+ if (target_read_memory (memaddr, buf, len))
+ return 0;
+
+ *return_value = extract_unsigned_integer (buf, len, byte_order);
+ return 1;
+}
+
LONGEST
read_memory_integer (CORE_ADDR memaddr, int len,
enum bfd_endian byte_order)
CORE_ADDR
read_memory_typed_address (CORE_ADDR addr, struct type *type)
{
- gdb_byte *buf = alloca (TYPE_LENGTH (type));
+ gdb_byte *buf = (gdb_byte *) alloca (TYPE_LENGTH (type));
read_memory (addr, buf, TYPE_LENGTH (type));
return extract_typed_address (buf, type);
}
-/* Same as target_write_memory, but report an error if can't
- write. */
+/* See gdbcore.h. */
+
void
write_memory (CORE_ADDR memaddr,
const bfd_byte *myaddr, ssize_t len)
status = target_write_memory (memaddr, myaddr, len);
if (status != 0)
- memory_error (status, memaddr);
+ memory_error (TARGET_XFER_E_IO, memaddr);
}
/* Same as write_memory, but notify 'memory_changed' observers. */
ssize_t len)
{
write_memory (memaddr, myaddr, len);
- observer_notify_memory_changed (current_inferior (), memaddr, len, myaddr);
+ gdb::observers::memory_changed.notify (current_inferior (), memaddr, len, myaddr);
}
/* Store VALUE at ADDR in the inferior as a LEN-byte unsigned
enum bfd_endian byte_order,
ULONGEST value)
{
- gdb_byte *buf = alloca (len);
+ gdb_byte *buf = (gdb_byte *) alloca (len);
store_unsigned_integer (buf, len, byte_order, value);
write_memory (addr, buf, len);
enum bfd_endian byte_order,
LONGEST value)
{
- gdb_byte *buf = alloca (len);
+ gdb_byte *buf = (gdb_byte *) alloca (len);
store_signed_integer (buf, len, byte_order, value);
write_memory (addr, buf, len);
\f
/* The current default bfd target. Points to storage allocated for
gnutarget_string. */
-char *gnutarget;
+const char *gnutarget;
/* Same thing, except it is "auto" not NULL for the default case. */
static char *gnutarget_string;
_("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,
+set_gnutarget_command (const char *ignore, int from_tty,
struct cmd_list_element *c)
{
char *gend = gnutarget_string + strlen (gnutarget_string);
/* A completion function for "set gnutarget". */
-static VEC (char_ptr) *
+static void
complete_set_gnutarget (struct cmd_list_element *cmd,
+ completion_tracker &tracker,
const char *text, const char *word)
{
static const char **bfd_targets;
for (last = 0; bfd_targets[last] != NULL; ++last)
;
- bfd_targets = xrealloc (bfd_targets, (last + 2) * sizeof (const char **));
+ bfd_targets = XRESIZEVEC (const char *, bfd_targets, last + 2);
bfd_targets[last] = "auto";
bfd_targets[last + 1] = NULL;
}
- return complete_on_enum (bfd_targets, text, word);
+ complete_on_enum (tracker, bfd_targets, text, word);
}
/* Set the gnutarget. */
void
-set_gnutarget (char *newtarget)
+set_gnutarget (const char *newtarget)
{
- if (gnutarget_string != NULL)
- xfree (gnutarget_string);
+ xfree (gnutarget_string);
gnutarget_string = xstrdup (newtarget);
set_gnutarget_command (NULL, 0, NULL);
}
+void _initialize_core ();
void
-_initialize_core (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\
+Usage: core-file FILE\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);
projects / deliverable / binutils-gdb.git / blobdiff