/* Generate a core file for the inferior process.
- Copyright (C) 2001-2019 Free Software Foundation, Inc.
+ Copyright (C) 2001-2022 Free Software Foundation, Inc.
This file is part of GDB.
static const char *default_gcore_target (void);
static enum bfd_architecture default_gcore_arch (void);
-static unsigned long default_gcore_mach (void);
static int gcore_memory_sections (bfd *);
/* create_gcore_bfd -- helper for gcore_command (exported).
if (obfd == NULL)
error (_("Failed to open '%s' for output."), filename);
bfd_set_format (obfd.get (), bfd_core);
- bfd_set_arch_mach (obfd.get (), default_gcore_arch (), default_gcore_mach ());
+ bfd_set_arch_mach (obfd.get (), default_gcore_arch (), 0);
return obfd;
}
generation should be converted to gdbarch_make_corefile_notes; at that
point, the target vector method can be removed. */
if (!gdbarch_make_corefile_notes_p (target_gdbarch ()))
- note_data.reset (target_make_corefile_notes (obfd, ¬e_size));
+ note_data = target_make_corefile_notes (obfd, ¬e_size);
else
- note_data.reset (gdbarch_make_corefile_notes (target_gdbarch (), obfd,
- ¬e_size));
+ note_data = gdbarch_make_corefile_notes (target_gdbarch (), obfd,
+ ¬e_size);
if (note_data == NULL || note_size == 0)
error (_("Target does not support core file generation."));
gdb::unique_xmalloc_ptr<char> corefilename;
/* No use generating a corefile without a target process. */
- if (!target_has_execution)
+ if (!target_has_execution ())
noprocess ();
if (args && *args)
else
{
/* Default corefile name is "core.PID". */
- corefilename.reset (xstrprintf ("core.%d", inferior_ptid.pid ()));
+ corefilename = xstrprintf ("core.%d", inferior_ptid.pid ());
}
if (info_verbose)
- fprintf_filtered (gdb_stdout,
- "Opening corefile '%s' for output.\n",
- corefilename.get ());
+ gdb_printf ("Opening corefile '%s' for output.\n",
+ corefilename.get ());
- /* Open the output file. */
- gdb_bfd_ref_ptr obfd (create_gcore_bfd (corefilename.get ()));
-
- /* Arrange to unlink the file on failure. */
- gdb::unlinker unlink_file (corefilename.get ());
-
- /* Call worker function. */
- write_gcore_file (obfd.get ());
-
- /* Succeeded. */
- unlink_file.keep ();
+ if (target_supports_dumpcore ())
+ target_dumpcore (corefilename.get ());
+ else
+ {
+ /* Open the output file. */
+ gdb_bfd_ref_ptr obfd (create_gcore_bfd (corefilename.get ()));
- fprintf_filtered (gdb_stdout, "Saved corefile %s\n", corefilename.get ());
-}
+ /* Arrange to unlink the file on failure. */
+ gdb::unlinker unlink_file (corefilename.get ());
-static unsigned long
-default_gcore_mach (void)
-{
-#if 1 /* See if this even matters... */
- return 0;
-#else
+ /* Call worker function. */
+ write_gcore_file (obfd.get ());
- const struct bfd_arch_info *bfdarch = gdbarch_bfd_arch_info (target_gdbarch ());
-
- if (bfdarch != NULL)
- return bfdarch->mach;
- if (exec_bfd == NULL)
- error (_("Can't find default bfd machine type (need execfile)."));
+ /* Succeeded. */
+ unlink_file.keep ();
+ }
- return bfd_get_mach (exec_bfd);
-#endif /* 1 */
+ gdb_printf ("Saved corefile %s\n", corefilename.get ());
}
static enum bfd_architecture
if (bfdarch != NULL)
return bfdarch->arch;
- if (exec_bfd == NULL)
+ if (current_program_space->exec_bfd () == NULL)
error (_("Can't find bfd architecture for corefile (need execfile)."));
- return bfd_get_arch (exec_bfd);
+ return bfd_get_arch (current_program_space->exec_bfd ());
}
static const char *
if (gdbarch_gcore_bfd_target_p (target_gdbarch ()))
return gdbarch_gcore_bfd_target (target_gdbarch ());
- /* Otherwise, try to fall back to the exec_bfd target. This will probably
+ /* Otherwise, try to fall back to the exec target. This will probably
not work for non-ELF targets. */
- if (exec_bfd == NULL)
+ if (current_program_space->exec_bfd () == NULL)
return NULL;
else
- return bfd_get_target (exec_bfd);
+ return bfd_get_target (current_program_space->exec_bfd ());
}
/* Derive a reasonable stack segment by unwinding the target stack,
gdb_assert (top);
/* Can't succeed without stack and registers. */
- if (!target_has_stack || !target_has_registers)
+ if (!target_has_stack () || !target_has_registers ())
return 0;
/* Can't succeed without current frame. */
else
return (bfd_vma) 0;
- gdbarch = get_objfile_arch (sbrk_objf);
+ gdbarch = sbrk_objf->arch ();
target_sbrk_arg = value_from_longest (builtin_type (gdbarch)->builtin_int,
sbrk_arg);
gdb_assert (target_sbrk_arg);
/* This function depends on being able to call a function in the
inferior. */
- if (!target_has_execution)
+ if (!target_has_execution ())
return 0;
/* The following code assumes that the link map is arranged as
}
static void
-make_output_phdrs (bfd *obfd, asection *osec, void *ignored)
+make_output_phdrs (bfd *obfd, asection *osec)
{
int p_flags = 0;
int p_type = 0;
+ /* Memory tag segments have already been handled by the architecture, as
+ those contain arch-specific information. If we have one of those, just
+ return. */
+ if (startswith (bfd_section_name (osec), "memtag"))
+ return;
+
/* FIXME: these constants may only be applicable for ELF. */
if (startswith (bfd_section_name (osec), "load"))
p_type = PT_LOAD;
static int
gcore_create_callback (CORE_ADDR vaddr, unsigned long size, int read,
- int write, int exec, int modified, void *data)
+ int write, int exec, int modified, bool memory_tagged,
+ void *data)
{
bfd *obfd = (bfd *) data;
asection *osec;
if (read == 0 && write == 0 && exec == 0 && modified == 0)
{
if (info_verbose)
- {
- fprintf_filtered (gdb_stdout, "Ignore segment, %s bytes at %s\n",
- plongest (size), paddress (target_gdbarch (), vaddr));
- }
+ {
+ gdb_printf ("Ignore segment, %s bytes at %s\n",
+ plongest (size), paddress (target_gdbarch (), vaddr));
+ }
return 0;
}
for (objfile *objfile : current_program_space->objfiles ())
ALL_OBJFILE_OSECTIONS (objfile, objsec)
{
- bfd *abfd = objfile->obfd;
+ bfd *abfd = objfile->obfd.get ();
asection *asec = objsec->the_bfd_section;
bfd_vma align = (bfd_vma) 1 << bfd_section_alignment (asec);
- bfd_vma start = obj_section_addr (objsec) & -align;
- bfd_vma end = (obj_section_endaddr (objsec) + align - 1) & -align;
+ bfd_vma start = objsec->addr () & -align;
+ bfd_vma end = (objsec->endaddr () + align - 1) & -align;
/* Match if either the entire memory region lies inside the
section (i.e. a mapping covering some pages of a large
if (info_verbose)
{
- fprintf_filtered (gdb_stdout, "Save segment, %s bytes at %s\n",
- plongest (size), paddress (target_gdbarch (), vaddr));
+ gdb_printf ("Save segment, %s bytes at %s\n",
+ plongest (size), paddress (target_gdbarch (), vaddr));
}
bfd_set_section_size (osec, size);
return 0;
}
+/* gdbarch_find_memory_region callback for creating a memory tag section.
+ DATA is 'bfd *' for the core file GDB is creating. */
+
+static int
+gcore_create_memtag_section_callback (CORE_ADDR vaddr, unsigned long size,
+ int read, int write, int exec,
+ int modified, bool memory_tagged,
+ void *data)
+{
+ /* Are there memory tags in this particular memory map entry? */
+ if (!memory_tagged)
+ return 0;
+
+ bfd *obfd = (bfd *) data;
+
+ /* Ask the architecture to create a memory tag section for this particular
+ memory map entry. It will be populated with contents later, as we can't
+ start writing the contents before we have all the sections sorted out. */
+ asection *memtag_section
+ = gdbarch_create_memtag_section (target_gdbarch (), obfd, vaddr, size);
+
+ if (memtag_section == nullptr)
+ {
+ warning (_("Couldn't make gcore memory tag segment: %s"),
+ bfd_errmsg (bfd_get_error ()));
+ return 1;
+ }
+
+ if (info_verbose)
+ {
+ gdb_printf (gdb_stdout, "Saved memory tag segment, %s bytes "
+ "at %s\n",
+ plongest (bfd_section_size (memtag_section)),
+ paddress (target_gdbarch (), vaddr));
+ }
+
+ return 0;
+}
+
int
objfile_find_memory_regions (struct target_ops *self,
find_memory_region_ftype func, void *obfd)
int size = bfd_section_size (isec);
int ret;
- ret = (*func) (obj_section_addr (objsec), size,
+ ret = (*func) (objsec->addr (), size,
1, /* All sections will be readable. */
(flags & SEC_READONLY) == 0, /* Writable. */
(flags & SEC_CODE) != 0, /* Executable. */
1, /* MODIFIED is unknown, pass it as true. */
+ false, /* No memory tags in the object file. */
obfd);
if (ret != 0)
return ret;
1, /* Stack section will be writable. */
0, /* Stack section will not be executable. */
1, /* Stack section will be modified. */
+ false, /* No memory tags in the object file. */
obfd);
/* Make a heap segment. */
- if (derive_heap_segment (exec_bfd, &temp_bottom, &temp_top))
+ if (derive_heap_segment (current_program_space->exec_bfd (), &temp_bottom,
+ &temp_top))
(*func) (temp_bottom, temp_top - temp_bottom,
1, /* Heap section will be readable. */
1, /* Heap section will be writable. */
0, /* Heap section will not be executable. */
1, /* Heap section will be modified. */
+ false, /* No memory tags in the object file. */
obfd);
return 0;
}
static void
-gcore_copy_callback (bfd *obfd, asection *osec, void *ignored)
+gcore_copy_callback (bfd *obfd, asection *osec)
{
bfd_size_type size, total_size = bfd_section_size (osec);
file_ptr offset = 0;
}
}
+/* Callback to copy contents to a particular memory tag section. */
+
+static void
+gcore_copy_memtag_section_callback (bfd *obfd, asection *osec)
+{
+ /* We are only interested in "memtag" sections. */
+ if (!startswith (bfd_section_name (osec), "memtag"))
+ return;
+
+ /* Fill the section with memory tag contents. */
+ if (!gdbarch_fill_memtag_section (target_gdbarch (), osec))
+ error (_("Failed to fill memory tag section for core file."));
+}
+
static int
gcore_memory_sections (bfd *obfd)
{
return 0; /* FIXME: error return/msg? */
}
+ /* Take care of dumping memory tags, if there are any. */
+ if (!gdbarch_find_memory_regions_p (target_gdbarch ())
+ || gdbarch_find_memory_regions (target_gdbarch (),
+ gcore_create_memtag_section_callback,
+ obfd) != 0)
+ {
+ if (target_find_memory_regions (gcore_create_memtag_section_callback,
+ obfd) != 0)
+ return 0;
+ }
+
/* Record phdrs for section-to-segment mapping. */
- bfd_map_over_sections (obfd, make_output_phdrs, NULL);
+ for (asection *sect : gdb_bfd_sections (obfd))
+ make_output_phdrs (obfd, sect);
- /* Copy memory region contents. */
- bfd_map_over_sections (obfd, gcore_copy_callback, NULL);
+ /* Copy memory region and memory tag contents. */
+ for (asection *sect : gdb_bfd_sections (obfd))
+ {
+ gcore_copy_callback (obfd, sect);
+ gcore_copy_memtag_section_callback (obfd, sect);
+ }
return 1;
}
+/* See gcore.h. */
+
+thread_info *
+gcore_find_signalled_thread ()
+{
+ thread_info *curr_thr = inferior_thread ();
+ if (curr_thr->state != THREAD_EXITED
+ && curr_thr->stop_signal () != GDB_SIGNAL_0)
+ return curr_thr;
+
+ for (thread_info *thr : current_inferior ()->non_exited_threads ())
+ if (thr->stop_signal () != GDB_SIGNAL_0)
+ return thr;
+
+ /* Default to the current thread, unless it has exited. */
+ if (curr_thr->state != THREAD_EXITED)
+ return curr_thr;
+
+ return nullptr;
+}
+
+void _initialize_gcore ();
void
-_initialize_gcore (void)
+_initialize_gcore ()
{
- add_com ("generate-core-file", class_files, gcore_command, _("\
+ cmd_list_element *generate_core_file_cmd
+ = add_com ("generate-core-file", class_files, gcore_command, _("\
Save a core file with the current state of the debugged process.\n\
Usage: generate-core-file [FILENAME]\n\
Argument is optional filename. Default filename is 'core.PROCESS_ID'."));
- add_com_alias ("gcore", "generate-core-file", class_files, 1);
+ add_com_alias ("gcore", generate_core_file_cmd, class_files, 1);
}
projects / binutils-gdb.git / blobdiff