/* Handle SVR4 shared libraries for GDB, the GNU Debugger.
- Copyright (C) 1990-2020 Free Software Foundation, Inc.
+ Copyright (C) 1990-2021 Free Software Foundation, Inc.
This file is part of GDB.
int pt_phdr_p = 0;
/* Get required auxv elements from target. */
- if (target_auxv_search (current_top_target (), AT_PHDR, &at_phdr) <= 0)
+ if (target_auxv_search (current_inferior ()->top_target (),
+ AT_PHDR, &at_phdr) <= 0)
return {};
- if (target_auxv_search (current_top_target (), AT_PHENT, &at_phent) <= 0)
+ if (target_auxv_search (current_inferior ()->top_target (),
+ AT_PHENT, &at_phent) <= 0)
return {};
- if (target_auxv_search (current_top_target (), AT_PHNUM, &at_phnum) <= 0)
+ if (target_auxv_search (current_inferior ()->top_target (),
+ AT_PHNUM, &at_phnum) <= 0)
return {};
if (!at_phdr || !at_phnum)
return {};
return 0;
bool found = false;
- for (target_section &target_section : current_program_space->target_sections)
+ for (const target_section &target_section
+ : current_program_space->target_sections ())
if (sect == target_section.the_bfd_section)
{
dyn_addr = target_section.addr;
/* This may be a static executable. Look for the symbol
conventionally named _r_debug, as a last resort. */
- msymbol = lookup_minimal_symbol ("_r_debug", NULL, symfile_objfile);
+ msymbol = lookup_minimal_symbol ("_r_debug", NULL,
+ current_program_space->symfile_object_file);
if (msymbol.minsym != NULL)
return BMSYMBOL_VALUE_ADDRESS (msymbol);
try
{
addr = read_memory_typed_address (info->debug_base + lmo->r_map_offset,
- ptr_type);
+ ptr_type);
}
catch (const gdb_exception_error &ex)
{
if (from_tty)
add_flags |= SYMFILE_VERBOSE;
- if (symfile_objfile)
+ if (current_program_space->symfile_object_file)
if (!query (_("Attempt to reload symbols from process? ")))
return 0;
/* Fetch the list of shared libraries. */
gdb::optional<gdb::char_vector> svr4_library_document
- = target_read_stralloc (current_top_target (), TARGET_OBJECT_LIBRARIES_SVR4,
+ = target_read_stralloc (current_inferior ()->top_target (),
+ TARGET_OBJECT_LIBRARIES_SVR4,
annex);
if (!svr4_library_document)
return 0;
}
/* For SVR4 versions, the first entry in the link map is for the
- inferior executable, so we must ignore it. For some versions of
- SVR4, it has no name. For others (Solaris 2.3 for example), it
- does have a name, so we can no longer use a missing name to
- decide when to ignore it. */
+ inferior executable, so we must ignore it. For some versions of
+ SVR4, it has no name. For others (Solaris 2.3 for example), it
+ does have a name, so we can no longer use a missing name to
+ decide when to ignore it. */
if (ignore_first && li->l_prev == 0)
{
first_l_name = li->l_name;
solib_add (NULL, 0, auto_solib_add);
/* svr4_current_sos() will set main_lm_addr for the main executable. */
- if (objfile == symfile_objfile)
+ if (objfile == current_program_space->symfile_object_file)
return info->main_lm_addr;
/* If OBJFILE is a separate debug object file, look for the
static bool
svr4_update_solib_event_breakpoint (struct breakpoint *b)
{
- struct bp_location *loc;
-
if (b->type != bp_shlib_event)
{
/* Continue iterating. */
return false;
}
- for (loc = b->loc; loc != NULL; loc = loc->next)
+ for (bp_location *loc : b->locations ())
{
struct svr4_info *info;
struct probe_and_action *pa;
static void
svr4_update_solib_event_breakpoints (void)
{
- iterate_over_breakpoints (svr4_update_solib_event_breakpoint);
+ for (breakpoint *bp : all_breakpoints_safe ())
+ svr4_update_solib_event_breakpoint (bp);
}
/* Create and register solib event breakpoints. PROBES is an array
sym_addr = gdbarch_addr_bits_remove
(target_gdbarch (),
- gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
- sym_addr,
- current_top_target ()));
+ gdbarch_convert_from_func_ptr_addr
+ (target_gdbarch (), sym_addr, current_inferior ()->top_target ()));
/* On at least some versions of Solaris there's a dynamic relocation
on _r_debug.r_brk and SYM_ADDR may not be relocated yet, e.g., if
sym_addr = 0;
/* Now we need to figure out where the dynamic linker was
- loaded so that we can load its symbols and place a breakpoint
- in the dynamic linker itself.
+ loaded so that we can load its symbols and place a breakpoint
+ in the dynamic linker itself.
- This address is stored on the stack. However, I've been unable
- to find any magic formula to find it for Solaris (appears to
- be trivial on GNU/Linux). Therefore, we have to try an alternate
- mechanism to find the dynamic linker's base address. */
+ This address is stored on the stack. However, I've been unable
+ to find any magic formula to find it for Solaris (appears to
+ be trivial on GNU/Linux). Therefore, we have to try an alternate
+ mechanism to find the dynamic linker's base address. */
gdb_bfd_ref_ptr tmp_bfd;
try
- {
+ {
tmp_bfd = solib_bfd_open (interp_name);
}
catch (const gdb_exception &ex)
goto bkpt_at_symbol;
/* Now convert the TMP_BFD into a target. That way target, as
- well as BFD operations can be used. target_bfd_reopen
- acquires its own reference. */
- tmp_bfd_target = target_bfd_reopen (tmp_bfd.get ());
+ well as BFD operations can be used. */
+ tmp_bfd_target = target_bfd_reopen (tmp_bfd);
/* On a running target, we can get the dynamic linker's base
- address from the shared library table. */
+ address from the shared library table. */
for (struct so_list *so : current_program_space->solibs ())
{
if (svr4_same_1 (interp_name, so->so_original_name))
}
/* If we were not able to find the base address of the loader
- from our so_list, then try using the AT_BASE auxilliary entry. */
+ from our so_list, then try using the AT_BASE auxilliary entry. */
if (!load_addr_found)
- if (target_auxv_search (current_top_target (), AT_BASE, &load_addr) > 0)
+ if (target_auxv_search (current_inferior ()->top_target (),
+ AT_BASE, &load_addr) > 0)
{
int addr_bit = gdbarch_addr_bit (target_gdbarch ());
the current pc (which should point at the entry point for the
dynamic linker) and subtracting the offset of the entry point.
- This is more fragile than the previous approaches, but is a good
- fallback method because it has actually been working well in
- most cases. */
+ This is more fragile than the previous approaches, but is a good
+ fallback method because it has actually been working well in
+ most cases. */
if (!load_addr_found)
{
struct regcache *regcache
}
/* Record the relocated start and end address of the dynamic linker
- text and plt section for svr4_in_dynsym_resolve_code. */
+ text and plt section for svr4_in_dynsym_resolve_code. */
interp_sect = bfd_get_section_by_name (tmp_bfd.get (), ".text");
if (interp_sect)
{
tmp_bfd_target);
/* We're done with both the temporary bfd and target. Closing
- the target closes the underlying bfd, because it holds the
- only remaining reference. */
+ the target closes the underlying bfd, because it holds the
+ only remaining reference. */
target_close (tmp_bfd_target);
if (sym_addr != 0)
}
/* For whatever reason we couldn't set a breakpoint in the dynamic
- linker. Warn and drop into the old code. */
+ linker. Warn and drop into the old code. */
bkpt_at_symbol:
warning (_("Unable to find dynamic linker breakpoint function.\n"
- "GDB will be unable to debug shared library initializers\n"
- "and track explicitly loaded dynamic code."));
+ "GDB will be unable to debug shared library initializers\n"
+ "and track explicitly loaded dynamic code."));
}
/* Scan through the lists of symbols, trying to look up the symbol and
set a breakpoint there. Terminate loop when we/if we succeed. */
+ objfile *objf = current_program_space->symfile_object_file;
for (bkpt_namep = solib_break_names; *bkpt_namep != NULL; bkpt_namep++)
{
- msymbol = lookup_minimal_symbol (*bkpt_namep, NULL, symfile_objfile);
+ msymbol = lookup_minimal_symbol (*bkpt_namep, NULL, objf);
if ((msymbol.minsym != NULL)
&& (BMSYMBOL_VALUE_ADDRESS (msymbol) != 0))
{
sym_addr = BMSYMBOL_VALUE_ADDRESS (msymbol);
- sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
- sym_addr,
- current_top_target ());
+ sym_addr = gdbarch_convert_from_func_ptr_addr
+ (target_gdbarch (), sym_addr, current_inferior ()->top_target ());
svr4_create_solib_event_breakpoints (info, target_gdbarch (),
sym_addr);
return 1;
{
for (bkpt_namep = bkpt_names; *bkpt_namep != NULL; bkpt_namep++)
{
- msymbol = lookup_minimal_symbol (*bkpt_namep, NULL, symfile_objfile);
+ msymbol = lookup_minimal_symbol (*bkpt_namep, NULL, objf);
if ((msymbol.minsym != NULL)
&& (BMSYMBOL_VALUE_ADDRESS (msymbol) != 0))
{
sym_addr = BMSYMBOL_VALUE_ADDRESS (msymbol);
- sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
- sym_addr,
- current_top_target ());
+ sym_addr = gdbarch_convert_from_func_ptr_addr
+ (target_gdbarch (), sym_addr,
+ current_inferior ()->top_target ());
svr4_create_solib_event_breakpoints (info, target_gdbarch (),
sym_addr);
return 1;
if ((bfd_get_file_flags (current_program_space->exec_bfd ()) & DYNAMIC) == 0)
return 0;
- if (target_auxv_search (current_top_target (), AT_ENTRY, &entry_point) <= 0)
+ if (target_auxv_search (current_inferior ()->top_target (),
+ AT_ENTRY, &entry_point) <= 0)
return 0;
exec_displacement
return 0;
else if (arch_size == 32
&& phdrs_target->size () >= sizeof (Elf32_External_Phdr)
- && phdrs_target->size () % sizeof (Elf32_External_Phdr) == 0)
+ && phdrs_target->size () % sizeof (Elf32_External_Phdr) == 0)
{
Elf_Internal_Ehdr *ehdr2
= elf_tdata (current_program_space->exec_bfd ())->elf_header;
}
/* Now compare program headers from the target and the binary
- with optional DISPLACEMENT. */
+ with optional DISPLACEMENT. */
for (i = 0;
i < phdrs_target->size () / sizeof (Elf32_External_Phdr);
}
else if (arch_size == 64
&& phdrs_target->size () >= sizeof (Elf64_External_Phdr)
- && phdrs_target->size () % sizeof (Elf64_External_Phdr) == 0)
+ && phdrs_target->size () % sizeof (Elf64_External_Phdr) == 0)
{
Elf_Internal_Ehdr *ehdr2
= elf_tdata (current_program_space->exec_bfd ())->elf_header;
/* Even DISPLACEMENT 0 is a valid new difference of in-memory vs. in-file
addresses. */
- if (symfile_objfile)
+ objfile *objf = current_program_space->symfile_object_file;
+ if (objf)
{
- section_offsets new_offsets (symfile_objfile->section_offsets.size (),
+ section_offsets new_offsets (objf->section_offsets.size (),
displacement);
- objfile_relocate (symfile_objfile, new_offsets);
+ objfile_relocate (objf, new_offsets);
}
else if (current_program_space->exec_bfd ())
{
static void
svr4_relocate_section_addresses (struct so_list *so,
- struct target_section *sec)
+ struct target_section *sec)
{
bfd *abfd = sec->the_bfd_section->owner;
void
set_solib_svr4_fetch_link_map_offsets (struct gdbarch *gdbarch,
- struct link_map_offsets *(*flmo) (void))
+ struct link_map_offsets *(*flmo) (void))
{
struct solib_svr4_ops *ops
= (struct solib_svr4_ops *) gdbarch_data (gdbarch, solib_svr4_data);
bfd *abfd;
if (current_objfile->separate_debug_objfile_backlink != nullptr)
- current_objfile = current_objfile->separate_debug_objfile_backlink;
+ current_objfile = current_objfile->separate_debug_objfile_backlink;
- if (current_objfile == symfile_objfile)
+ if (current_objfile == current_program_space->symfile_object_file)
abfd = current_program_space->exec_bfd ();
else
abfd = current_objfile->obfd;
svr4_so_ops.update_breakpoints = svr4_update_solib_event_breakpoints;
svr4_so_ops.handle_event = svr4_handle_solib_event;
- gdb::observers::free_objfile.attach (svr4_free_objfile_observer);
+ gdb::observers::free_objfile.attach (svr4_free_objfile_observer,
+ "solib-svr4");
}
projects / binutils-gdb.git / blobdiff