diff options
Diffstat (limited to 'gdb/solib-svr4.c')
| -rw-r--r-- | gdb/solib-svr4.c | 419 |
1 files changed, 175 insertions, 244 deletions
diff --git a/gdb/solib-svr4.c b/gdb/solib-svr4.c index 48aace1..9b4cabf 100644 --- a/gdb/solib-svr4.c +++ b/gdb/solib-svr4.c @@ -47,7 +47,6 @@ #include <map> -static struct link_map_offsets *svr4_fetch_link_map_offsets (void); static void svr4_relocate_main_executable (void); static void probes_table_remove_objfile_probes (struct objfile *objfile); static void svr4_iterate_over_objfiles_in_search_order @@ -89,27 +88,6 @@ static const char * const main_name_list[] = NULL }; -/* What to do when a probe stop occurs. */ - -enum probe_action -{ - /* Something went seriously wrong. Stop using probes and - revert to using the older interface. */ - PROBES_INTERFACE_FAILED, - - /* No action is required. The shared object list is still - valid. */ - DO_NOTHING, - - /* The shared object list should be reloaded entirely. */ - FULL_RELOAD, - - /* Attempt to incrementally update the shared object list. If - the update fails or is not possible, fall back to reloading - the list in full. */ - UPDATE_OR_RELOAD, -}; - /* A probe's name and its associated action. */ struct probe_info @@ -184,8 +162,8 @@ svr4_same (const char *gdb_name, const char *inferior_name, return gdb_lm_info.l_addr_inferior == inferior_lm_info.l_addr_inferior; } -static int -svr4_same (const solib &gdb, const solib &inferior) +bool +svr4_solib_ops::same (const solib &gdb, const solib &inferior) const { auto *lmg = gdb::checked_static_cast<const lm_info_svr4 *> (gdb.lm_info.get ()); @@ -196,10 +174,10 @@ svr4_same (const solib &gdb, const solib &inferior) inferior.original_name.c_str (), *lmg, *lmi); } -static lm_info_svr4_up -lm_info_read (CORE_ADDR lm_addr) +lm_info_svr4_up +svr4_solib_ops::read_lm_info (CORE_ADDR lm_addr) const { - struct link_map_offsets *lmo = svr4_fetch_link_map_offsets (); + link_map_offsets *lmo = this->fetch_link_map_offsets (); lm_info_svr4_up lm_info; gdb::byte_vector lm (lmo->link_map_size); @@ -229,16 +207,16 @@ lm_info_read (CORE_ADDR lm_addr) return lm_info; } -static int -has_lm_dynamic_from_link_map (void) +int +svr4_solib_ops::has_lm_dynamic_from_link_map () const { - struct link_map_offsets *lmo = svr4_fetch_link_map_offsets (); + link_map_offsets *lmo = this->fetch_link_map_offsets (); return lmo->l_ld_offset >= 0; } -static CORE_ADDR -lm_addr_check (const solib &so, bfd *abfd) +CORE_ADDR +svr4_solib_ops::lm_addr_check (const solib &so, bfd *abfd) const { auto *li = gdb::checked_static_cast<lm_info_svr4 *> (so.lm_info.get ()); @@ -249,7 +227,7 @@ lm_addr_check (const solib &so, bfd *abfd) l_addr = li->l_addr_inferior; - if (! abfd || ! has_lm_dynamic_from_link_map ()) + if (!abfd || !this->has_lm_dynamic_from_link_map ()) goto set_addr; l_dynaddr = li->l_ld; @@ -475,8 +453,8 @@ svr4_is_default_namespace (const svr4_info *info, CORE_ADDR debug_base) /* Free the probes table. */ -static void -free_probes_table (struct svr4_info *info) +void +svr4_solib_ops::free_probes_table (svr4_info *info) const { info->probes_table.reset (nullptr); } @@ -820,10 +798,10 @@ elf_locate_base (void) checking r_version for a known version number, or r_state for RT_CONSISTENT. */ -static CORE_ADDR -solib_svr4_r_map (CORE_ADDR debug_base) +CORE_ADDR +svr4_solib_ops::read_r_map (CORE_ADDR debug_base) const { - struct link_map_offsets *lmo = svr4_fetch_link_map_offsets (); + link_map_offsets *lmo = this->fetch_link_map_offsets (); type *ptr_type = builtin_type (current_inferior ()->arch ())->builtin_data_ptr; CORE_ADDR addr = 0; @@ -843,10 +821,10 @@ solib_svr4_r_map (CORE_ADDR debug_base) /* Find r_brk from the inferior's debug base. */ -static CORE_ADDR -solib_svr4_r_brk (struct svr4_info *info) +CORE_ADDR +svr4_solib_ops::find_r_brk (svr4_info *info) const { - struct link_map_offsets *lmo = svr4_fetch_link_map_offsets (); + link_map_offsets *lmo = this->fetch_link_map_offsets (); type *ptr_type = builtin_type (current_inferior ()->arch ())->builtin_data_ptr; @@ -857,10 +835,10 @@ solib_svr4_r_brk (struct svr4_info *info) /* Find the link map for the dynamic linker (if it is not in the normal list of loaded shared objects). */ -static CORE_ADDR -solib_svr4_r_ldsomap (struct svr4_info *info) +CORE_ADDR +svr4_solib_ops::find_r_ldsomap (svr4_info *info) const { - struct link_map_offsets *lmo = svr4_fetch_link_map_offsets (); + link_map_offsets *lmo = this->fetch_link_map_offsets (); type *ptr_type = builtin_type (current_inferior ()->arch ())->builtin_data_ptr; enum bfd_endian byte_order = type_byte_order (ptr_type); @@ -888,10 +866,10 @@ solib_svr4_r_ldsomap (struct svr4_info *info) /* Find the next namespace from the r_next field. */ -static CORE_ADDR -solib_svr4_r_next (CORE_ADDR debug_base) +CORE_ADDR +svr4_solib_ops::read_r_next (CORE_ADDR debug_base) const { - link_map_offsets *lmo = svr4_fetch_link_map_offsets (); + link_map_offsets *lmo = this->fetch_link_map_offsets (); type *ptr_type = builtin_type (current_inferior ()->arch ())->builtin_data_ptr; bfd_endian byte_order = type_byte_order (ptr_type); @@ -923,8 +901,8 @@ solib_svr4_r_next (CORE_ADDR debug_base) memory areas containing the l_name string are saved in the core file. */ -static int -svr4_keep_data_in_core (CORE_ADDR vaddr, unsigned long size) +bool +svr4_solib_ops::keep_data_in_core (CORE_ADDR vaddr, unsigned long size) const { struct svr4_info *info; CORE_ADDR ldsomap; @@ -934,13 +912,13 @@ svr4_keep_data_in_core (CORE_ADDR vaddr, unsigned long size) info->debug_base = elf_locate_base (); if (info->debug_base == 0) - return 0; + return false; - ldsomap = solib_svr4_r_ldsomap (info); + ldsomap = this->find_r_ldsomap (info); if (!ldsomap) - return 0; + return false; - std::unique_ptr<lm_info_svr4> li = lm_info_read (ldsomap); + std::unique_ptr<lm_info_svr4> li = this->read_lm_info (ldsomap); name_lm = li != NULL ? li->l_name : 0; return (name_lm >= vaddr && name_lm < vaddr + size); @@ -948,11 +926,11 @@ svr4_keep_data_in_core (CORE_ADDR vaddr, unsigned long size) /* See solib.h. */ -static int -open_symbol_file_object (int from_tty) +bool +svr4_solib_ops::open_symbol_file_object (int from_tty) const { CORE_ADDR lm, l_name; - struct link_map_offsets *lmo = svr4_fetch_link_map_offsets (); + link_map_offsets *lmo = this->fetch_link_map_offsets (); type *ptr_type = builtin_type (current_inferior ()->arch ())->builtin_data_ptr; int l_name_size = ptr_type->length (); @@ -965,17 +943,17 @@ open_symbol_file_object (int from_tty) if (current_program_space->symfile_object_file) if (!query (_("Attempt to reload symbols from process? "))) - return 0; + return false; /* Always locate the debug struct, in case it has moved. */ info->debug_base = elf_locate_base (); if (info->debug_base == 0) - return 0; /* failed somehow... */ + return false; /* failed somehow... */ /* First link map member should be the executable. */ - lm = solib_svr4_r_map (info->debug_base); + lm = this->read_r_map (info->debug_base); if (lm == 0) - return 0; /* failed somehow... */ + return false; /* failed somehow... */ /* Read address of name from target memory to GDB. */ read_memory (lm + lmo->l_name_offset, l_name_buf.data (), l_name_size); @@ -984,7 +962,7 @@ open_symbol_file_object (int from_tty) l_name = extract_typed_address (l_name_buf.data (), ptr_type); if (l_name == 0) - return 0; /* No filename. */ + return false; /* No filename. */ /* Now fetch the filename from target memory. */ gdb::unique_xmalloc_ptr<char> filename @@ -993,13 +971,13 @@ open_symbol_file_object (int from_tty) if (filename == nullptr) { warning (_("failed to read exec filename from attached file")); - return 0; + return false; } /* Have a pathname: read the symbol file. */ symbol_file_add_main (filename.get (), add_flags); - return 1; + return true; } /* Data exchange structure for the XML parser as returned by @@ -1032,8 +1010,8 @@ svr4_free_objfile_observer (struct objfile *objfile) /* Implement solib_ops.clear_so. */ -static void -svr4_clear_so (const solib &so) +void +svr4_solib_ops::clear_so (const solib &so) const { auto *li = gdb::checked_static_cast<lm_info_svr4 *> (so.lm_info.get ()); @@ -1043,14 +1021,14 @@ svr4_clear_so (const solib &so) /* Create the solib objects equivalent to the svr4_sos in SOS. */ -static owning_intrusive_list<solib> -solib_from_svr4_sos (const std::vector<svr4_so> &sos) +owning_intrusive_list<solib> +svr4_solib_ops::solibs_from_svr4_sos (const std::vector<svr4_so> &sos) const { owning_intrusive_list<solib> dst; for (const svr4_so &so : sos) { - auto &newobj = dst.emplace_back (); + auto &newobj = dst.emplace_back (*this); newobj.name = so.name; newobj.original_name = so.name; @@ -1237,8 +1215,8 @@ svr4_current_sos_via_xfer_libraries (struct svr4_library_list *list, /* If no shared library information is available from the dynamic linker, build a fallback list from other sources. */ -static owning_intrusive_list<solib> -svr4_default_sos (svr4_info *info) +owning_intrusive_list<solib> +svr4_solib_ops::default_sos (svr4_info *info) const { if (!info->debug_loader_offset_p) return {}; @@ -1250,7 +1228,7 @@ svr4_default_sos (svr4_info *info) li->l_addr_p = 1; owning_intrusive_list<solib> sos; - auto &newobj = sos.emplace_back (); + auto &newobj = sos.emplace_back (*this); newobj.lm_info = std::move (li); newobj.name = info->debug_loader_name; @@ -1266,16 +1244,16 @@ svr4_default_sos (svr4_info *info) is returned the entries stored to LINK_PTR_PTR are still valid although they may represent only part of the inferior library list. */ -static int -svr4_read_so_list (svr4_info *info, CORE_ADDR lm, CORE_ADDR prev_lm, - std::vector<svr4_so> &sos, int ignore_first) +int +svr4_solib_ops::read_so_list (svr4_info *info, CORE_ADDR lm, CORE_ADDR prev_lm, + std::vector<svr4_so> &sos, int ignore_first) const { CORE_ADDR first_l_name = 0; CORE_ADDR next_lm; for (; lm != 0; prev_lm = lm, lm = next_lm) { - lm_info_svr4_up li = lm_info_read (lm); + lm_info_svr4_up li = this->read_lm_info (lm); if (li == NULL) return 0; @@ -1331,8 +1309,8 @@ svr4_read_so_list (svr4_info *info, CORE_ADDR lm, CORE_ADDR prev_lm, stored by the probes interface. Handle special cases relating to the first elements of the list in default namespace. */ -static void -svr4_current_sos_direct (struct svr4_info *info) +void +svr4_solib_ops::current_sos_direct (svr4_info *info) const { CORE_ADDR lm; bool ignore_first; @@ -1398,15 +1376,15 @@ svr4_current_sos_direct (struct svr4_info *info) /* Collect the sos in each namespace. */ CORE_ADDR debug_base = info->debug_base; for (; debug_base != 0; - ignore_first = false, debug_base = solib_svr4_r_next (debug_base)) + ignore_first = false, debug_base = this->read_r_next (debug_base)) { /* Walk the inferior's link map list, and build our so_list list. */ - lm = solib_svr4_r_map (debug_base); + lm = this->read_r_map (debug_base); if (lm != 0) { svr4_maybe_add_namespace (info, debug_base); - svr4_read_so_list (info, lm, 0, info->solib_lists[debug_base], - ignore_first); + this->read_so_list (info, lm, 0, info->solib_lists[debug_base], + ignore_first); } } @@ -1419,15 +1397,15 @@ svr4_current_sos_direct (struct svr4_info *info) r_debug object. If we added it to the default namespace (as it was), we would probably run into inconsistencies with the load map's prev/next links (I wonder if we did). */ - debug_base = solib_svr4_r_ldsomap (info); + debug_base = this->find_r_ldsomap (info); if (debug_base != 0) { /* Add the dynamic linker's namespace unless we already did. */ if (info->solib_lists.find (debug_base) == info->solib_lists.end ()) { svr4_maybe_add_namespace (info, debug_base); - svr4_read_so_list (info, debug_base, 0, info->solib_lists[debug_base], - 0); + this->read_so_list (info, debug_base, 0, + info->solib_lists[debug_base], 0); } } @@ -1436,15 +1414,15 @@ svr4_current_sos_direct (struct svr4_info *info) /* Collect sos read and stored by the probes interface. */ -static owning_intrusive_list<solib> -svr4_collect_probes_sos (svr4_info *info) +owning_intrusive_list<solib> +svr4_solib_ops::collect_probes_sos (svr4_info *info) const { owning_intrusive_list<solib> res; for (const auto &tuple : info->solib_lists) { const std::vector<svr4_so> &sos = tuple.second; - res.splice (solib_from_svr4_sos (sos)); + res.splice (this->solibs_from_svr4_sos (sos)); } return res; @@ -1453,26 +1431,26 @@ svr4_collect_probes_sos (svr4_info *info) /* Implement the main part of the "current_sos" solib_ops method. */ -static owning_intrusive_list<solib> -svr4_current_sos_1 (svr4_info *info) +owning_intrusive_list<solib> +svr4_solib_ops::current_sos_1 (svr4_info *info) const { owning_intrusive_list<solib> sos; /* If we're using the probes interface, we can use the cache as it will be maintained by probe update/reload actions. */ if (info->probes_table != nullptr) - sos = svr4_collect_probes_sos (info); + sos = this->collect_probes_sos (info); /* If we're not using the probes interface or if we didn't cache anything, read the sos to fill the cache, then collect them from the cache. */ if (sos.empty ()) { - svr4_current_sos_direct (info); + this->current_sos_direct (info); - sos = svr4_collect_probes_sos (info); + sos = this->collect_probes_sos (info); if (sos.empty ()) - sos = svr4_default_sos (info); + sos = this->default_sos (info); } return sos; @@ -1480,11 +1458,11 @@ svr4_current_sos_1 (svr4_info *info) /* Implement the "current_sos" solib_ops method. */ -static owning_intrusive_list<solib> -svr4_current_sos () +owning_intrusive_list<solib> +svr4_solib_ops::current_sos () const { svr4_info *info = get_svr4_info (current_program_space); - owning_intrusive_list<solib> sos = svr4_current_sos_1 (info); + owning_intrusive_list<solib> sos = this->current_sos_1 (info); struct mem_range vsyscall_range; /* Filter out the vDSO module, if present. Its symbol file would @@ -1731,7 +1709,11 @@ tls_maybe_fill_slot (solib &so) { /* Cause svr4_current_sos() to be run if it hasn't been already. */ if (info->main_lm_addr == 0) - svr4_current_sos_direct (info); + { + auto &ops + = gdb::checked_static_cast<const svr4_solib_ops &> (so.ops ()); + ops.current_sos_direct (info); + } /* Quit early when main_lm_addr is still 0. */ if (info->main_lm_addr == 0) @@ -1802,7 +1784,7 @@ match_main (const char *soname) SVR4 run time loader. */ bool -svr4_in_dynsym_resolve_code (CORE_ADDR pc) +svr4_solib_ops::in_dynsym_resolve_code (CORE_ADDR pc) const { struct svr4_info *info = get_svr4_info (current_program_space); @@ -2001,12 +1983,10 @@ solib_event_probe_action (struct probe_and_action *pa) shared objects from the inferior. Handle special cases relating to the first elements of the list. Returns nonzero on success. */ -static int -solist_update_full (struct svr4_info *info) +void +svr4_solib_ops::update_full (svr4_info *info) const { - svr4_current_sos_direct (info); - - return 1; + this->current_sos_direct (info); } /* Update the shared object list starting from the link-map entry @@ -2014,9 +1994,9 @@ solist_update_full (struct svr4_info *info) nonzero if the list was successfully updated, or zero to indicate failure. */ -static int -solist_update_incremental (svr4_info *info, CORE_ADDR debug_base, - CORE_ADDR lm) +int +svr4_solib_ops::update_incremental (svr4_info *info, CORE_ADDR debug_base, + CORE_ADDR lm) const { /* Fall back to a full update if we are using a remote target that does not support incremental transfers. */ @@ -2094,7 +2074,7 @@ solist_update_incremental (svr4_info *info, CORE_ADDR debug_base, above check and deferral to solist_update_full ensures that this call to svr4_read_so_list will never see the first element. */ - if (!svr4_read_so_list (info, lm, prev_lm, solist, 0)) + if (!this->read_so_list (info, lm, prev_lm, solist, 0)) return 0; } @@ -2105,8 +2085,8 @@ solist_update_incremental (svr4_info *info, CORE_ADDR debug_base, original interface. We don't reset the breakpoints as the ones set up for the probes-based interface are adequate. */ -static void -disable_probes_interface (svr4_info *info) +void +svr4_solib_ops::disable_probes_interface (svr4_info *info) const { warning (_("Probes-based dynamic linker interface failed.\n" "Reverting to original interface.")); @@ -2121,8 +2101,8 @@ disable_probes_interface (svr4_info *info) probes-based linker interface. Do nothing if using the standard interface. */ -static void -svr4_handle_solib_event (void) +void +svr4_solib_ops::handle_event () const { struct svr4_info *info = get_svr4_info (current_program_space); struct probe_and_action *pa; @@ -2147,9 +2127,9 @@ svr4_handle_solib_event (void) /* If anything goes wrong we revert to the original linker interface. */ - auto cleanup = make_scope_exit ([info] () + auto cleanup = make_scope_exit ([this, info] () { - disable_probes_interface (info); + this->disable_probes_interface (info); }); action = solib_event_probe_action (pa); @@ -2251,15 +2231,12 @@ svr4_handle_solib_event (void) if (action == UPDATE_OR_RELOAD) { - if (!solist_update_incremental (info, debug_base, lm)) + if (!this->update_incremental (info, debug_base, lm)) action = FULL_RELOAD; } if (action == FULL_RELOAD) - { - if (!solist_update_full (info)) - return; - } + this->update_full (info); cleanup.release (); } @@ -2306,8 +2283,8 @@ svr4_update_solib_event_breakpoint (struct breakpoint *b) /* Enable or disable optional solib event breakpoints as appropriate. Called whenever stop_on_solib_events is changed. */ -static void -svr4_update_solib_event_breakpoints (void) +void +svr4_solib_ops::update_breakpoints () const { for (breakpoint &bp : all_breakpoints_safe ()) svr4_update_solib_event_breakpoint (&bp); @@ -2318,10 +2295,10 @@ svr4_update_solib_event_breakpoints (void) solib event breakpoint will be created and registered for each probe. */ -static void -svr4_create_probe_breakpoints (svr4_info *info, struct gdbarch *gdbarch, - const std::vector<probe *> *probes, - struct objfile *objfile) +void +svr4_solib_ops::create_probe_breakpoints (svr4_info *info, gdbarch *gdbarch, + const std::vector<probe *> *probes, + objfile *objfile) const { for (int i = 0; i < NUM_PROBES; i++) { @@ -2339,17 +2316,17 @@ svr4_create_probe_breakpoints (svr4_info *info, struct gdbarch *gdbarch, } } - svr4_update_solib_event_breakpoints (); + this->update_breakpoints (); } /* Find all the glibc named probes. Only if all of the probes are found, then create them and return true. Otherwise return false. If WITH_PREFIX is set then add "rtld" to the front of the probe names. */ -static bool -svr4_find_and_create_probe_breakpoints (svr4_info *info, - struct gdbarch *gdbarch, - struct obj_section *os, - bool with_prefix) +bool +svr4_solib_ops::find_and_create_probe_breakpoints (svr4_info *info, + gdbarch *gdbarch, + obj_section *os, + bool with_prefix) const { SOLIB_SCOPED_DEBUG_START_END ("objfile=%s, with_prefix=%d", os->objfile->original_name, with_prefix); @@ -2427,7 +2404,7 @@ svr4_find_and_create_probe_breakpoints (svr4_info *info, /* All probes found. Now create them. */ solib_debug_printf ("using probes interface"); - svr4_create_probe_breakpoints (info, gdbarch, probes, os->objfile); + this->create_probe_breakpoints (info, gdbarch, probes, os->objfile); return true; } @@ -2443,15 +2420,16 @@ svr4_find_and_create_probe_breakpoints (svr4_info *info, probes aren't found, a single breakpoint is set on the original marker function. */ -static void -svr4_create_solib_event_breakpoints (svr4_info *info, struct gdbarch *gdbarch, - CORE_ADDR address) +void +svr4_solib_ops::create_event_breakpoints (svr4_info *info, gdbarch *gdbarch, + CORE_ADDR address) const { struct obj_section *os = find_pc_section (address); if (os == nullptr - || (!svr4_find_and_create_probe_breakpoints (info, gdbarch, os, false) - && !svr4_find_and_create_probe_breakpoints (info, gdbarch, os, true))) + || (!this->find_and_create_probe_breakpoints (info, gdbarch, os, false) + && !this->find_and_create_probe_breakpoints (info, gdbarch, os, + true))) { solib_debug_printf ("falling back to r_brk breakpoint: addr=%s", paddress (gdbarch, address)); @@ -2491,8 +2469,8 @@ svr4_create_solib_event_breakpoints (svr4_info *info, struct gdbarch *gdbarch, depending upon whether or not the library is being mapped or unmapped, and then set to RT_CONSISTENT after the library is mapped/unmapped. */ -static int -enable_break (struct svr4_info *info, int from_tty) +int +svr4_solib_ops::enable_break (svr4_info *info, int from_tty) const { const char * const *bkpt_namep; asection *interp_sect; @@ -2508,8 +2486,8 @@ enable_break (struct svr4_info *info, int from_tty) solib_add (NULL, from_tty, auto_solib_add); sym_addr = 0; - if (info->debug_base && solib_svr4_r_map (info->debug_base) != 0) - sym_addr = solib_svr4_r_brk (info); + if (info->debug_base && this->read_r_map (info->debug_base) != 0) + sym_addr = this->find_r_brk (info); if (sym_addr != 0) { @@ -2568,8 +2546,8 @@ enable_break (struct svr4_info *info, int from_tty) = info->interp_plt_sect_low + bfd_section_size (interp_sect); } - svr4_create_solib_event_breakpoints - (info, current_inferior ()->arch (), sym_addr); + this->create_event_breakpoints (info, current_inferior ()->arch (), + sym_addr); return 1; } } @@ -2621,7 +2599,7 @@ enable_break (struct svr4_info *info, int from_tty) { load_addr_found = 1; loader_found_in_list = 1; - load_addr = lm_addr_check (so, tmp_bfd.get ()); + load_addr = this->lm_addr_check (so, tmp_bfd.get ()); break; } } @@ -2728,9 +2706,8 @@ enable_break (struct svr4_info *info, int from_tty) if (sym_addr != 0) { - svr4_create_solib_event_breakpoints (info, - current_inferior ()->arch (), - load_addr + sym_addr); + this->create_event_breakpoints (info, current_inferior ()->arch (), + load_addr + sym_addr); return 1; } @@ -2757,9 +2734,8 @@ enable_break (struct svr4_info *info, int from_tty) sym_addr = gdbarch_convert_from_func_ptr_addr (current_inferior ()->arch (), sym_addr, current_inferior ()->top_target ()); - svr4_create_solib_event_breakpoints (info, - current_inferior ()->arch (), - sym_addr); + this->create_event_breakpoints (info, current_inferior ()->arch (), + sym_addr); return 1; } } @@ -2777,8 +2753,9 @@ enable_break (struct svr4_info *info, int from_tty) sym_addr = gdbarch_convert_from_func_ptr_addr (current_inferior ()->arch (), sym_addr, current_inferior ()->top_target ()); - svr4_create_solib_event_breakpoints - (info, current_inferior ()->arch (), sym_addr); + this->create_event_breakpoints (info, + current_inferior ()->arch (), + sym_addr); return 1; } } @@ -3302,15 +3279,15 @@ svr4_relocate_main_executable (void) addresses, and saving sufficient information about them to allow their symbols to be read at a later time. */ -static void -svr4_solib_create_inferior_hook (int from_tty) +void +svr4_solib_ops::create_inferior_hook (int from_tty) const { struct svr4_info *info; info = get_svr4_info (current_program_space); /* Clear the probes-based interface's state. */ - free_probes_table (info); + this->free_probes_table (info); info->solib_lists.clear (); info->namespace_id.clear (); info->active_namespaces.clear (); @@ -3323,12 +3300,12 @@ svr4_solib_create_inferior_hook (int from_tty) if (!target_has_execution ()) return; - if (!enable_break (info, from_tty)) + if (!this->enable_break (info, from_tty)) return; } -static void -svr4_clear_solib (program_space *pspace) +void +svr4_solib_ops::clear_solib (program_space *pspace) const { svr4_info *info = get_svr4_info (pspace); info->debug_base = 0; @@ -3391,15 +3368,15 @@ find_loadable_elf_internal_phdr (bfd *abfd, bfd_section *asect) return nullptr; } -/* Implement solib_ops::relocate_section_addresses() for svr4 targets. */ - -static void -svr4_relocate_section_addresses (solib &so, target_section *sec) +void +svr4_solib_ops::relocate_section_addresses (solib &so, + target_section *sec) const { bfd *abfd = sec->the_bfd_section->owner; - sec->addr = svr4_truncate_ptr (sec->addr + lm_addr_check (so, abfd)); - sec->endaddr = svr4_truncate_ptr (sec->endaddr + lm_addr_check (so, abfd)); + sec->addr = svr4_truncate_ptr (sec->addr + this->lm_addr_check (so, abfd)); + sec->endaddr + = svr4_truncate_ptr (sec->endaddr + this->lm_addr_check (so, abfd)); struct bfd_section *asect = sec->the_bfd_section; gdb_assert (asect != nullptr); @@ -3469,56 +3446,23 @@ svr4_relocate_section_addresses (solib &so, target_section *sec) } } } - - -/* Architecture-specific operations. */ - -struct solib_svr4_ops -{ - /* Return a description of the layout of `struct link_map'. */ - struct link_map_offsets *(*fetch_link_map_offsets)(void) = nullptr; -}; - -/* Per-architecture data key. */ -static const registry<gdbarch>::key<struct solib_svr4_ops> solib_svr4_data; - -/* Return a default for the architecture-specific operations. */ - -static struct solib_svr4_ops * -get_ops (struct gdbarch *gdbarch) -{ - struct solib_svr4_ops *ops = solib_svr4_data.get (gdbarch); - if (ops == nullptr) - ops = solib_svr4_data.emplace (gdbarch); - return ops; -} -/* Set the architecture-specific `struct link_map_offsets' fetcher for - GDBARCH to FLMO. Also, install SVR4 solib_ops into GDBARCH. */ +/* See solib-svr4.h. */ void -set_solib_svr4_fetch_link_map_offsets (struct gdbarch *gdbarch, - struct link_map_offsets *(*flmo) (void)) +set_solib_svr4_ops (gdbarch *gdbarch, gdbarch_make_solib_ops_ftype make_solib_ops) { - struct solib_svr4_ops *ops = get_ops (gdbarch); - - ops->fetch_link_map_offsets = flmo; - - set_gdbarch_so_ops (gdbarch, &svr4_so_ops); + set_gdbarch_make_solib_ops (gdbarch, make_solib_ops); set_gdbarch_iterate_over_objfiles_in_search_order (gdbarch, svr4_iterate_over_objfiles_in_search_order); } -/* Fetch a link_map_offsets structure using the architecture-specific - `struct link_map_offsets' fetcher. */ +/* See solib-svr4.h. */ -static struct link_map_offsets * -svr4_fetch_link_map_offsets (void) +solib_ops_up +make_svr4_ilp32_solib_ops () { - struct solib_svr4_ops *ops = get_ops (current_inferior ()->arch ()); - - gdb_assert (ops->fetch_link_map_offsets); - return ops->fetch_link_map_offsets (); + return std::make_unique<ilp32_svr4_solib_ops> (); } /* Most OS'es that have SVR4-style ELF dynamic libraries define a @@ -3528,8 +3472,8 @@ svr4_fetch_link_map_offsets (void) /* Fetch (and possibly build) an appropriate `struct link_map_offsets' for an ILP32 SVR4 system. */ -struct link_map_offsets * -svr4_ilp32_fetch_link_map_offsets (void) +link_map_offsets * +ilp32_svr4_solib_ops::fetch_link_map_offsets () const { static struct link_map_offsets lmo; static struct link_map_offsets *lmp = NULL; @@ -3557,11 +3501,26 @@ svr4_ilp32_fetch_link_map_offsets (void) return lmp; } +/* solib_ops for LP64 SVR4 systems. */ + +struct lp64_svr4_solib_ops : public svr4_solib_ops +{ + link_map_offsets *fetch_link_map_offsets () const override; +}; + +/* See solib-svr4.h. */ + +solib_ops_up +make_svr4_lp64_solib_ops () +{ + return std::make_unique<lp64_svr4_solib_ops> (); +} + /* Fetch (and possibly build) an appropriate `struct link_map_offsets' for an LP64 SVR4 system. */ -struct link_map_offsets * -svr4_lp64_fetch_link_map_offsets (void) +link_map_offsets * +lp64_svr4_solib_ops::fetch_link_map_offsets () const { static struct link_map_offsets lmo; static struct link_map_offsets *lmp = NULL; @@ -3708,19 +3667,15 @@ svr4_iterate_over_objfiles_in_search_order } } -/* See solib_ops::find_solib_addr in solist.h. */ - -static std::optional<CORE_ADDR> -svr4_find_solib_addr (solib &so) +std::optional<CORE_ADDR> +svr4_solib_ops::find_solib_addr (solib &so) const { auto *li = gdb::checked_static_cast<lm_info_svr4 *> (so.lm_info.get ()); return li->l_addr_inferior; } -/* See solib_ops::find_solib_ns in solist.h. */ - -static int -svr4_find_solib_ns (const solib &so) +int +svr4_solib_ops::find_solib_ns (const solib &so) const { CORE_ADDR debug_base = find_debug_base_for_solib (&so); svr4_info *info = get_svr4_info (current_program_space); @@ -3735,17 +3690,15 @@ svr4_find_solib_ns (const solib &so) error (_("No namespace found")); } -/* see solib_ops::num_active_namespaces in solist.h. */ -static int -svr4_num_active_namespaces () +int +svr4_solib_ops::num_active_namespaces () const { svr4_info *info = get_svr4_info (current_program_space); return info->active_namespaces.size (); } -/* See solib_ops::get_solibs_in_ns in solist.h. */ -static std::vector<const solib *> -svr4_get_solibs_in_ns (int nsid) +std::vector<const solib *> +svr4_solib_ops::get_solibs_in_ns (int nsid) const { std::vector<const solib*> ns_solibs; svr4_info *info = get_svr4_info (current_program_space); @@ -3791,29 +3744,7 @@ svr4_get_solibs_in_ns (int nsid) return ns_solibs; } -const struct solib_ops svr4_so_ops = -{ - svr4_relocate_section_addresses, - svr4_clear_so, - svr4_clear_solib, - svr4_solib_create_inferior_hook, - svr4_current_sos, - open_symbol_file_object, - svr4_in_dynsym_resolve_code, - solib_bfd_open, - svr4_same, - svr4_keep_data_in_core, - svr4_update_solib_event_breakpoints, - svr4_handle_solib_event, - svr4_find_solib_addr, - svr4_find_solib_ns, - svr4_num_active_namespaces, - svr4_get_solibs_in_ns, -}; - -void _initialize_svr4_solib (); -void -_initialize_svr4_solib () +INIT_GDB_FILE (svr4_solib) { gdb::observers::free_objfile.attach (svr4_free_objfile_observer, "solib-svr4"); |