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This changes the probes to be independent of the program space.
After this, when a probe's address is needed, it is determined by
applying offsets at the point of use.
This introduces a bound_probe object, similar to bound minimal
symbols. Objects of this type are used when it's necessary to pass a
probe and its corresponding objfile.
This removes the backlink from probe to objfile, which was primarily
used to fetch the architecture to use.
This adds a get_probe_address function which calls a probe method to
compute the probe's relocated address. Similarly, it adds an objfile
parameter to the semaphore methods so they can do the relocation
properly as well.
2014-03-03 Tom Tromey <tromey@redhat.com>
* break-catch-throw.c (fetch_probe_arguments): Use bound probes.
* breakpoint.c (create_longjmp_master_breakpoint): Use
get_probe_address.
(add_location_to_breakpoint, bkpt_probe_insert_location)
(bkpt_probe_remove_location): Update.
* breakpoint.h (struct bp_location) <probe>: Now a bound_probe.
* elfread.c (elf_symfile_relocate_probe): Remove.
(elf_probe_fns): Update.
(insert_exception_resume_breakpoint): Change type of "probe"
parameter to bound_probe.
(check_exception_resume): Update.
* objfiles.c (objfile_relocate1): Don't relocate probes.
* probe.c (bound_probe_s): New typedef.
(parse_probes): Use get_probe_address. Set sal's objfile.
(find_probe_by_pc): Return a bound_probe.
(collect_probes): Return a VEC(bound_probe_s).
(compare_probes): Update.
(gen_ui_out_table_header_info): Change type of "probes"
parameter. Update.
(info_probes_for_ops): Update.
(get_probe_address): New function.
(probe_safe_evaluate_at_pc): Update.
* probe.h (struct probe_ops) <get_probe_address>: New field.
<set_semaphore, clear_semaphore>: Add objfile parameter.
(struct probe) <objfile>: Remove field.
<arch>: New field.
<address>: Update comment.
(struct bound_probe): New.
(find_probe_by_pc): Return a bound_probe.
(get_probe_address): Declare.
* solib-svr4.c (struct probe_and_action) <address>: New field.
(hash_probe_and_action, equal_probe_and_action): Update.
(register_solib_event_probe): Add address parameter.
(solib_event_probe_at): Update.
(svr4_create_probe_breakpoints): Add objfile parameter. Use
get_probe_address.
* stap-probe.c (struct stap_probe) <sem_addr>: Update comment.
(stap_get_probe_address): New function.
(stap_can_evaluate_probe_arguments, compute_probe_arg)
(compile_probe_arg): Update.
(stap_set_semaphore, stap_clear_semaphore): Compute semaphore's
address.
(handle_stap_probe): Don't relocate the probe.
(stap_relocate): Remove.
(stap_gen_info_probes_table_values): Update.
(stap_probe_ops): Remove stap_relocate.
* symfile-debug.c (debug_sym_relocate_probe): Remove.
(debug_sym_probe_fns): Update.
* symfile.h (struct sym_probe_fns) <sym_relocate_probe>: Remove.
* symtab.c (init_sal): Use memset.
* symtab.h (struct symtab_and_line) <objfile>: New field.
* tracepoint.c (start_tracing, stop_tracing): Update.
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This patch starts changing minimal symbols to be independent of the
program space.
Specifically, it adds a new objfile parameter to MSYMBOL_VALUE_ADDRESS
and changes all the code to use it. This is needed so we can change
gdb to apply the section offset when a minsym's address is computed,
as opposed to baking the offsets into the symbol itself.
A few spots still need the unrelocated address. For these, we
introduce MSYMBOL_VALUE_RAW_ADDRESS.
As a convenience, we also add the new macro BMSYMBOL_VALUE_ADDRESS,
which computes the address of a bound minimal symbol. This just does
the obvious thing with the fields.
Note that this change does not actually enable program space
independence. That requires more changes to gdb. However, to ensure
that these changes compile properly, this patch does add the needed
section lookup code to MSYMBOL_VALUE_ADDRESS -- it just ensures it has
no effect at runtime by multiplying the offset by 0.
2014-02-26 Tom Tromey <tromey@redhat.com>
* ada-lang.c (ada_main_name): Update.
(ada_add_standard_exceptions): Update.
* ada-tasks.c (ada_tasks_inferior_data_sniffer): Update.
* aix-thread.c (pdc_symbol_addrs, pd_enable): Update.
* arm-tdep.c (skip_prologue_function, arm_skip_stub): Update.
* auxv.c (ld_so_xfer_auxv): Update.
* avr-tdep.c (avr_scan_prologue): Update.
* ax-gdb.c (gen_var_ref): Update.
* blockframe.c (get_pc_function_start)
(find_pc_partial_function_gnu_ifunc): Update.
* breakpoint.c (create_overlay_event_breakpoint)
(create_longjmp_master_breakpoint)
(create_std_terminate_master_breakpoint)
(create_exception_master_breakpoint): Update.
* bsd-uthread.c (bsd_uthread_lookup_address): Update.
* c-valprint.c (c_val_print): Update.
* coff-pe-read.c (add_pe_forwarded_sym): Update.
* common/agent.c (agent_look_up_symbols): Update.
* dbxread.c (find_stab_function_addr, end_psymtab): Update.
* dwarf2loc.c (call_site_to_target_addr): Update.
* dwarf2read.c (dw2_find_pc_sect_symtab): Update.
* elfread.c (elf_gnu_ifunc_record_cache)
(elf_gnu_ifunc_resolve_by_got): Update.
* findvar.c (default_read_var_value): Update.
* frame.c (inside_main_func): Update.
* frv-tdep.c (frv_frame_this_id): Update.
* glibc-tdep.c (glibc_skip_solib_resolver): Update.
* gnu-v3-abi.c (gnuv3_get_typeid, gnuv3_skip_trampoline):
Update.
* hppa-hpux-tdep.c (hppa64_hpux_search_dummy_call_sequence)
(hppa_hpux_find_dummy_bpaddr): Update.
* hppa-tdep.c (hppa_symbol_address): Update.
* infcmd.c (until_next_command): Update.
* jit.c (jit_read_descriptor, jit_breakpoint_re_set_internal):
Update.
* linespec.c (minsym_found, add_minsym): Update.
* linux-nat.c (get_signo): Update.
* linux-thread-db.c (inferior_has_bug): Update.
* m32c-tdep.c (m32c_return_value)
(m32c_m16c_address_to_pointer): Update.
* m32r-tdep.c (m32r_frame_this_id): Update.
* m68hc11-tdep.c (m68hc11_get_register_info): Update.
* machoread.c (macho_resolve_oso_sym_with_minsym): Update.
* maint.c (maintenance_translate_address): Update.
* minsyms.c (lookup_minimal_symbol_by_pc_name): Update.
(frob_address): New function.
(lookup_minimal_symbol_by_pc_section_1): Use raw addresses,
frob_address. Rename parameter to "pc_in".
(compare_minimal_symbols, compact_minimal_symbols): Use raw
addresses.
(find_solib_trampoline_target, minimal_symbol_upper_bound):
Update.
* mips-linux-tdep.c (mips_linux_skip_resolver): Update.
* mips-tdep.c (mips_skip_pic_trampoline_code): Update.
* objc-lang.c (find_objc_msgsend): Update.
* objfiles.c (objfile_relocate1): Update.
* obsd-tdep.c (obsd_skip_solib_resolver): Update.
* p-valprint.c (pascal_val_print): Update.
* parse.c (write_exp_msymbol): Update.
* ppc-linux-tdep.c (ppc_linux_spe_context_lookup)
(ppc_elfv2_skip_entrypoint): Update.
* ppc-sysv-tdep.c (convert_code_addr_to_desc_addr): Update.
* printcmd.c (build_address_symbolic, msym_info)
(address_info): Update.
* proc-service.c (ps_pglobal_lookup): Update.
* psymtab.c (find_pc_sect_psymtab_closer)
(find_pc_sect_psymtab, find_pc_sect_symtab_from_partial):
Change msymbol parameter to bound_minimal_symbol.
* ravenscar-thread.c (get_running_thread_id): Update.
* remote.c (remote_check_symbols): Update.
* sh64-tdep.c (sh64_elf_make_msymbol_special): Use raw
address.
* sol2-tdep.c (sol2_skip_solib_resolver): Update.
* solib-dsbt.c (lm_base): Update.
* solib-frv.c (lm_base, main_got): Update.
* solib-irix.c (locate_base): Update.
* solib-som.c (som_solib_create_inferior_hook)
(link_map_start): Update.
* solib-spu.c (spu_enable_break, ocl_enable_break): Update.
* solib-svr4.c (elf_locate_base, enable_break): Update.
* spu-tdep.c (spu_get_overlay_table, spu_catch_start)
(flush_ea_cache): Update.
* stabsread.c (define_symbol, scan_file_globals): Update.
* stack.c (find_frame_funname): Update.
* symfile-debug.c (debug_qf_expand_symtabs_matching)
(debug_qf_find_pc_sect_symtab): Update.
* symfile.c (simple_read_overlay_table)
(simple_overlay_update): Update.
* symfile.h (struct quick_symbol_functions)
<find_pc_sect_symtab>: Change type of msymbol to
bound_minimal_symbol.
* symmisc.c (dump_msymbols): Update.
* symtab.c (find_pc_sect_symtab_via_partial)
(find_pc_sect_psymtab, find_pc_sect_line, skip_prologue_sal)
(search_symbols, print_msymbol_info): Update.
* symtab.h (MSYMBOL_VALUE_RAW_ADDRESS): New macro.
(MSYMBOL_VALUE_ADDRESS): Redefine.
(BMSYMBOL_VALUE_ADDRESS): New macro.
* tracepoint.c (scope_info): Update.
* tui/tui-disasm.c (tui_find_disassembly_address)
(tui_get_begin_asm_address): Update.
* valops.c (find_function_in_inferior): Update.
* value.c (value_static_field, value_fn_field): Update.
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gdb/ChangeLog:
* symfile-debug.c (debug_qf_expand_symtabs_matching): Reformat
function parameters.
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This commit fixes a compile error introduced by my previous commit.
Checked in as obvious.
2014-02-10 Gary Benson <gbenson@redhat.com>
* symfile-debug.c (debug_qf_expand_symtabs_matching):
Rename name_matcher to symbol_matcher.
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Commit 206f2a5777679e6d1ad21ce435f6e7af92e2d41a added two new
typedefs, but did not update debug_qf_expand_symtabs_matching
to use them. This patch fixes this.
Checked in as obvious.
2014-02-10 Gary Benson <gbenson@redhat.com>
* symfile-debug.c (debug_qf_expand_symtabs_matching):
Use expand_symtabs_file_matcher_ftype and
expand_symtabs_symbol_matcher_ftype.
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This replaces XZALLOC with XCNEW and removes XZALLOC.
This change is purely mechanical.
2014-01-13 Tom Tromey <tromey@redhat.com>
* defs.h (XZALLOC): Remove.
* ada-lang.c (get_ada_inferior_data): Use XCNEW, not XZALLOC.
* ada-tasks.c (get_ada_tasks_pspace_data): Likewise.
(get_ada_tasks_inferior_data): Likewise.
* auto-load.c (get_auto_load_pspace_data): Likewise.
* auxv.c (get_auxv_inferior_data): Likewise.
* bfd-target.c (target_bfd_reopen): Likewise.
* breakpoint.c (get_catch_syscall_inferior_data): Likewise.
(deprecated_insert_raw_breakpoint): Likewise.
* bsd-uthread.c (bsd_uthread_pid_to_str): Likewise.
* corelow.c (core_open): Likewise.
* darwin-nat.c (darwin_check_new_threads): Likewise.
(darwin_attach_pid): Likewise.
* dummy-frame.c (dummy_frame_push): Likewise.
* dwarf2-frame.c (dwarf2_frame_cache): Likewise.
* dwarf2loc.c (allocate_piece_closure): Likewise.
* elfread.c (elf_symfile_segments): Likewise.
* eval.c (ptrmath_type_p): Likewise.
* exceptions.c (EXCEPTIONS_SIGJMP_BUF): Likewise.
* gdbtypes.c (alloc_type_arch): Likewise.
(alloc_type_instance): Likewise.
* hppa-tdep.c (hppa_gdbarch_init): Likewise.
* inf-child.c (inf_child_can_use_agent): Likewise.
* inflow.c (get_inflow_inferior_data): Likewise.
* infrun.c (save_infcall_suspend_state): Likewise.
* jit.c (jit_reader_load): Likewise.
(get_jit_objfile_data): Likewise.
(get_jit_program_space_data): Likewise.
(jit_object_open_impl): Likewise.
(jit_symtab_open_impl): Likewise.
(jit_block_open_impl): Likewise.
(jit_frame_sniffer): Likewise.
* linux-fork.c (add_fork): Likewise.
* maint.c (make_command_stats_cleanup): Likewise.
* objfiles.c (get_objfile_pspace_data): Likewise.
* opencl-lang.c (struct lval_closure): Likewise.
* osdata.c (osdata_start_osdata): Likewise.
* progspace.c (new_address_space): Likewise.
(add_program_space): Likewise.
* remote-sim.c (get_sim_inferior_data): Likewise.
* sh-tdep.c (sh_gdbarch_init): Likewise.
* skip.c (Ignore): Likewise.
(skip_delete_command): Likewise.
* solib-aix.c (get_solib_aix_inferior_data): Likewise.
(library_list_start_library): Likewise.
(solib_aix_current_sos): Likewise.
* solib-darwin.c (get_darwin_info): Likewise.
(darwin_current_sos): Likewise.
* solib-dsbt.c (get_dsbt_info): Likewise.
* solib-ia64-hpux.c (new_so_list): Likewise.
(ia64_hpux_get_solib_linkage_addr): Likewise.
* solib-spu.c (append_ocl_sos): Likewise.
(spu_current_sos): Likewise.
* solib-svr4.c (get_svr4_info): Likewise.
(svr4_keep_data_in_core): Likewise.
(library_list_start_library): Likewise.
(svr4_default_sos): Likewise.
(svr4_read_so_list): Likewise.
* solib-target.c (library_list_start_library): Likewise.
(solib_target_current_sos): Likewise.
* sparc-tdep.c (sparc32_gdbarch_init): Likewise.
* symfile-debug.c (install_symfile_debug_logging): Likewise.
* symfile.c (default_symfile_segments): Likewise.
* target-descriptions.c (tdesc_data_init): Likewise.
(tdesc_create_reg): Likewise.
(struct tdesc_type *): Likewise.
(tdesc_create_vector): Likewise.
(tdesc_set_struct_size): Likewise.
(struct tdesc_type *): Likewise.
(tdesc_free_feature): Likewise.
(tdesc_create_feature): Likewise.
* windows-nat.c (windows_add_thread): Likewise.
(windows_make_so): Likewise.
* xml-support.c (gdb_xml_body_text): Likewise.
(gdb_xml_create_parser_and_cleanup): Likewise.
(xml_process_xincludes): Likewise.
* xml-syscall.c (allocate_syscalls_info): Likewise.
(syscall_create_syscall_desc): Likewise.
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While looking into the probe API, it seemed to me that there were a
number of methods in sym_probe_fns that were not needed. This patch
removes them.
Specifically, it seems to me that sym_probe_fns ought to be concerned
with the API for constructing the probes. Any method relating to some
aspect of an individual probe can be handled via the probe's own
vtable. That is, the double indirection here doesn't seem useful --
it certainly isn't in fact used, but also I couldn't think of a
potential use.
2013-12-06 Tom Tromey <tromey@redhat.com>
* break-catch-throw.c (fetch_probe_arguments): Use
get_probe_argument_count and evaluate_probe_argument.
* elfread.c (elf_get_probe_argument_count)
(elf_can_evaluate_probe_arguments, elf_evaluate_probe_argument)
(elf_compile_to_ax): Remove.
(elf_probe_fns): Update.
* probe.c (get_probe_argument_count, can_evaluate_probe_arguments)
(evaluate_probe_argument): Call method on probe, not via sym
functions.
* stap-probe.c (compute_probe_arg): Use get_probe_argument_count,
evaluate_probe_argument.
(compile_probe_arg): Use get_probe_argument_count. Call method on
probe, not via sym functions.
* symfile-debug.c (debug_sym_get_probe_argument_count)
(debug_can_evaluate_probe_arguments)
(debug_sym_evaluate_probe_argument, debug_sym_compile_to_ax):
Remove.
(debug_sym_probe_fns): Remove.
* symfile.h (struct sym_probe_fns) <sym_get_probe_argument_count,
can_evaluate_probe_arguments, sym_evaluate_probe_argument,
sym_compile_to_ax>: Remove fields.
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* NEWS: Mention "set debug symfile".
* Makefile.in (SFILES): Add symfile-debug.c.
(COMMON_OBS): Add symfile-debug.o.
* elfread.c (elf_symfile_read): Use objfile_set_sym_fns to set the
objfile's symbol functions.
* objfiles.h (objfile_set_sym_fns): Declare.
* symfile-debug.c: New file.
* symfile.c (syms_from_objfile_1): Use objfile_set_sym_fns to set the
objfile's symbol functions.
(reread_symbols): Ditto.
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