static void
jit_register_code (struct gdbarch *gdbarch,
CORE_ADDR entry_addr, struct jit_code_entry *code_entry)
{
bfd *nbfd;
struct section_addr_info *sai;
struct bfd_section *sec;
struct objfile *objfile;
struct cleanup *old_cleanups, *my_cleanups;
int i;
const struct bfd_arch_info *b;
CORE_ADDR *entry_addr_ptr;
nbfd = bfd_open_from_target_memory (code_entry->symfile_addr,
code_entry->symfile_size, gnutarget);
old_cleanups = make_cleanup_bfd_close (nbfd);
/* Check the format. NOTE: This initializes important data that GDB uses!
We would segfault later without this line. */
if (!bfd_check_format (nbfd, bfd_object))
{
printf_unfiltered (_("\
JITed symbol file is not an object file, ignoring it.\n"));
do_cleanups (old_cleanups);
return;
}
static bfd *
bfd_openw_with_cleanup(const char *filename, const char *target,
const char *mode)
{
bfd *obfd;
if (*mode == 'w') /* Write: create new file */
{
obfd = bfd_openw(filename, target);
if (obfd == NULL)
error(_("Failed to open %s: %s."), filename,
bfd_errmsg(bfd_get_error()));
make_cleanup_bfd_close(obfd);
if (!bfd_set_format(obfd, bfd_object))
error(_("bfd_openw_with_cleanup: %s."), bfd_errmsg(bfd_get_error()));
}
else if (*mode == 'a') /* Append to existing file */
{ /* FIXME: does NOT work... */
error(_("bfd_openw does not work with append."));
}
else
error(_("bfd_openw_with_cleanup: unknown mode %s."), mode);
return obfd;
}
static bfd *
bfd_openr_with_cleanup(const char *filename, const char *target)
{
bfd *ibfd;
ibfd = bfd_openr(filename, target);
if (ibfd == NULL)
error(_("Failed to open %s: %s."), filename,
bfd_errmsg(bfd_get_error()));
make_cleanup_bfd_close(ibfd);
if (!bfd_check_format(ibfd, bfd_object))
error(_("'%s' is not a recognized file format."), filename);
return ibfd;
}
static void
core_open (char *filename, int from_tty)
{
const char *p;
int siggy;
struct cleanup *old_chain;
char *temp;
bfd *temp_bfd;
int scratch_chan;
int flags;
volatile struct gdb_exception except;
target_preopen (from_tty);
if (!filename)
{
if (core_bfd)
error (_("No core file specified. (Use `detach' "
"to stop debugging a core file.)"));
else
error (_("No core file specified."));
}
filename = tilde_expand (filename);
if (!IS_ABSOLUTE_PATH (filename))
{
temp = concat (current_directory, "/",
filename, (char *) NULL);
xfree (filename);
filename = temp;
}
old_chain = make_cleanup (xfree, filename);
flags = O_BINARY | O_LARGEFILE;
if (write_files)
flags |= O_RDWR;
else
flags |= O_RDONLY;
scratch_chan = open (filename, flags, 0);
if (scratch_chan < 0)
perror_with_name (filename);
temp_bfd = bfd_fopen (filename, gnutarget,
write_files ? FOPEN_RUB : FOPEN_RB,
scratch_chan);
if (temp_bfd == NULL)
perror_with_name (filename);
if (!bfd_check_format (temp_bfd, bfd_core)
&& !gdb_check_format (temp_bfd))
{
/* 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_bfd_close (temp_bfd);
error (_("\"%s\" is not a core dump: %s"),
filename, bfd_errmsg (bfd_get_error ()));
}
/* Looks semi-reasonable. Toss the old core file and work on the
new. */
discard_cleanups (old_chain); /* Don't free filename any more */
unpush_target (&core_ops);
core_bfd = temp_bfd;
old_chain = make_cleanup (core_close_cleanup, 0 /*ignore*/);
/* FIXME: kettenis/20031023: This is very dangerous. The
CORE_GDBARCH that results from this call may very well be
different from CURRENT_GDBARCH. However, its methods may only
work if it is selected as the current architecture, because they
rely on swapped data (see gdbarch.c). We should get rid of that
swapped data. */
core_gdbarch = gdbarch_from_bfd (core_bfd);
/* Find a suitable core file handler to munch on core_bfd */
core_vec = sniff_core_bfd (core_bfd);
validate_files ();
core_data = XZALLOC (struct target_section_table);
/* Find the data section */
if (build_section_table (core_bfd,
&core_data->sections,
&core_data->sections_end))
error (_("\"%s\": Can't find sections: %s"),
bfd_get_filename (core_bfd), bfd_errmsg (bfd_get_error ()));
/* If we have no exec file, try to set the architecture from the
core file. We don't do this unconditionally since an exec file
typically contains more information that helps us determine the
architecture than a core file. */
if (!exec_bfd)
set_gdbarch_from_file (core_bfd);
push_target (&core_ops);
discard_cleanups (old_chain);
/* Do this before acknowledging the inferior, so if
post_create_inferior throws (can happen easilly if you're loading
a core file with the wrong exec), we aren't left with threads
from the previous inferior. */
init_thread_list ();
inferior_ptid = null_ptid;
/* Need to flush the register cache (and the frame cache) from a
previous debug session. If inferior_ptid ends up the same as the
last debug session --- e.g., b foo; run; gcore core1; step; gcore
core2; core core1; core core2 --- then there's potential for
get_current_regcache to return the cached regcache of the
previous session, and the frame cache being stale. */
registers_changed ();
/* Build up thread list from BFD sections, and possibly set the
current thread to the .reg/NN section matching the .reg
section. */
bfd_map_over_sections (core_bfd, add_to_thread_list,
bfd_get_section_by_name (core_bfd, ".reg"));
if (ptid_equal (inferior_ptid, null_ptid))
{
/* Either we found no .reg/NN section, and hence we have a
non-threaded core (single-threaded, from gdb's perspective),
or for some reason add_to_thread_list couldn't determine
which was the "main" thread. The latter case shouldn't
usually happen, but we're dealing with input here, which can
always be broken in different ways. */
struct thread_info *thread = first_thread_of_process (-1);
if (thread == NULL)
{
inferior_appeared (current_inferior (), CORELOW_PID);
inferior_ptid = pid_to_ptid (CORELOW_PID);
add_thread_silent (inferior_ptid);
}
else
switch_to_thread (thread->ptid);
}
post_create_inferior (&core_ops, from_tty);
/* Now go through the target stack looking for threads since there
may be a thread_stratum target loaded on top of target core by
now. The layer above should claim threads found in the BFD
sections. */
TRY_CATCH (except, RETURN_MASK_ERROR)
{
target_find_new_threads ();
}
if (except.reason < 0)
exception_print (gdb_stderr, except);
p = bfd_core_file_failing_command (core_bfd);
if (p)
printf_filtered (_("Core was generated by `%s'.\n"), p);
siggy = bfd_core_file_failing_signal (core_bfd);
if (siggy > 0)
{
/* If we don't have a CORE_GDBARCH to work with, assume a native
core (map gdb_signal from host signals). If we do have
CORE_GDBARCH to work with, but no gdb_signal_from_target
implementation for that gdbarch, as a fallback measure,
assume the host signal mapping. It'll be correct for native
cores, but most likely incorrect for cross-cores. */
enum gdb_signal sig = (core_gdbarch != NULL
&& gdbarch_gdb_signal_from_target_p (core_gdbarch)
? gdbarch_gdb_signal_from_target (core_gdbarch,
siggy)
: gdb_signal_from_host (siggy));
printf_filtered (_("Program terminated with signal %d, %s.\n"),
siggy, gdb_signal_to_string (sig));
}
/* Fetch all registers from core file. */
target_fetch_registers (get_current_regcache (), -1);
/* Now, set up the frame cache, and print the top of stack. */
reinit_frame_cache ();
print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC);
}
static void
gcore_command (char *args, int from_tty)
{
struct cleanup *old_chain;
char *corefilename, corefilename_buffer[40];
asection *note_sec = NULL;
bfd *obfd;
void *note_data = NULL;
int note_size = 0;
/* No use generating a corefile without a target process. */
if (!target_has_execution)
noprocess ();
if (args && *args)
corefilename = args;
else
{
/* Default corefile name is "core.PID". */
sprintf (corefilename_buffer, "core.%d", PIDGET (inferior_ptid));
corefilename = corefilename_buffer;
}
if (info_verbose)
fprintf_filtered (gdb_stdout,
"Opening corefile '%s' for output.\n", corefilename);
/* Open the output file. */
obfd = bfd_openw (corefilename, default_gcore_target ());
if (!obfd)
error (_("Failed to open '%s' for output."), corefilename);
/* Need a cleanup that will close the file (FIXME: delete it?). */
old_chain = make_cleanup_bfd_close (obfd);
bfd_set_format (obfd, bfd_core);
bfd_set_arch_mach (obfd, default_gcore_arch (), default_gcore_mach ());
/* An external target method must build the notes section. */
note_data = target_make_corefile_notes (obfd, ¬e_size);
/* Create the note section. */
if (note_data != NULL && note_size != 0)
{
note_sec = bfd_make_section_anyway_with_flags (obfd, "note0",
SEC_HAS_CONTENTS
| SEC_READONLY
| SEC_ALLOC);
if (note_sec == NULL)
error (_("Failed to create 'note' section for corefile: %s"),
bfd_errmsg (bfd_get_error ()));
bfd_set_section_vma (obfd, note_sec, 0);
bfd_set_section_alignment (obfd, note_sec, 0);
bfd_set_section_size (obfd, note_sec, note_size);
}
/* Now create the memory/load sections. */
if (gcore_memory_sections (obfd) == 0)
error (_("gcore: failed to get corefile memory sections from target."));
/* Write out the contents of the note section. */
if (note_data != NULL && note_size != 0)
{
if (!bfd_set_section_contents (obfd, note_sec, note_data, 0, note_size))
warning (_("writing note section (%s)"), bfd_errmsg (bfd_get_error ()));
}
/* Succeeded. */
fprintf_filtered (gdb_stdout, "Saved corefile %s\n", corefilename);
/* Clean-ups will close the output file and free malloc memory. */
do_cleanups (old_chain);
return;
}
static void
download (char *target_name, char *args, int from_tty,
void (*write_routine) (bfd *from_bfd, asection *from_sec,
file_ptr from_addr, bfd_vma to_addr, int len),
void (*start_routine) (bfd_vma entry))
{
struct cleanup *old_chain;
asection *section;
bfd *pbfd;
bfd_vma entry;
int i;
#define WRITESIZE 1024
char *filename;
int quiet;
int nostart;
quiet = 0;
nostart = 0;
filename = NULL;
while (*args != '\000')
{
char *arg;
while (isspace (*args))
args++;
arg = args;
while ((*args != '\000') && !isspace (*args))
args++;
if (*args != '\000')
*args++ = '\000';
if (*arg != '-')
filename = arg;
else if (strncmp (arg, "-quiet", strlen (arg)) == 0)
quiet = 1;
else if (strncmp (arg, "-nostart", strlen (arg)) == 0)
nostart = 1;
else
error ("unknown option `%s'", arg);
}
if (!filename)
filename = get_exec_file (1);
pbfd = bfd_openr (filename, gnutarget);
if (pbfd == NULL)
{
perror_with_name (filename);
return;
}
old_chain = make_cleanup_bfd_close (pbfd);
if (!bfd_check_format (pbfd, bfd_object))
error ("\"%s\" is not an object file: %s", filename,
bfd_errmsg (bfd_get_error ()));
for (section = pbfd->sections; section; section = section->next)
{
if (bfd_get_section_flags (pbfd, section) & SEC_LOAD)
{
bfd_vma section_address;
bfd_size_type section_size;
file_ptr fptr;
const char *section_name;
section_name = bfd_get_section_name (pbfd, section);
section_address = bfd_get_section_vma (pbfd, section);
/* Adjust sections from a.out files, since they don't
carry their addresses with. */
if (bfd_get_flavour (pbfd) == bfd_target_aout_flavour)
{
if (strcmp (section_name, ".text") == 0)
section_address = bfd_get_start_address (pbfd);
else if (strcmp (section_name, ".data") == 0)
{
/* Read the first 8 bytes of the data section.
There should be the string 'DaTa' followed by
a word containing the actual section address. */
struct data_marker
{
char signature[4]; /* 'DaTa' */
unsigned char sdata[4]; /* &sdata */
}
marker;
bfd_get_section_contents (pbfd, section, &marker, 0,
sizeof (marker));
if (strncmp (marker.signature, "DaTa", 4) == 0)
{
if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
section_address = bfd_getb32 (marker.sdata);
else
section_address = bfd_getl32 (marker.sdata);
}
}
}
section_size = bfd_get_section_size_before_reloc (section);
if (!quiet)
printf_filtered ("[Loading section %s at 0x%x (%d bytes)]\n",
bfd_get_section_name (pbfd, section),
section_address,
section_size);
fptr = 0;
while (section_size > 0)
{
int count;
static char inds[] = "|/-\\";
static int k = 0;
QUIT;
count = min (section_size, WRITESIZE);
write_routine (pbfd, section, fptr, section_address, count);
if (!quiet)
{
printf_unfiltered ("\r%c", inds[k++ % 4]);
gdb_flush (gdb_stdout);
}
section_address += count;
fptr += count;
section_size -= count;
}
}
}
if (!nostart)
{
entry = bfd_get_start_address (pbfd);
if (!quiet)
printf_unfiltered ("[Starting %s at 0x%x]\n", filename, entry);
start_routine (entry);
}
do_cleanups (old_chain);
}
