6a053cb1ff
This changes section_offsets to be specialization of a std::vector and
updates all the users. It also removes the ANOFFSET and
SIZEOF_N_SECTION_OFFSETS macros.
Most of this is just a generic sort of cleanup, that reduces the
number of lines of code. However, a couple spots were doing weird
things.
objfile_relocate did:
- std::vector<struct section_offsets>
- new_debug_offsets (SIZEOF_N_SECTION_OFFSETS (debug_objfile->num_sections));
... which seems to greatly over-estimate the number of elements
needed.
This appeared in set_objfile_default_section_offset:
- std::vector<struct section_offsets> offsets (objf->num_sections,
- { { offset } });
... which makes sense due to type safety, but is also actively
confusing given that section_offsets was previously also a kind of
vector type.
Tested on x86-64 Fedora 30.
gdb/ChangeLog
2020-01-08 Tom Tromey <tromey@adacore.com>
* xcoffread.c (enter_line_range, read_xcoff_symtab)
(process_xcoff_symbol, xcoff_symfile_offsets): Update.
* symtab.h (MSYMBOL_VALUE_ADDRESS): Update.
(struct section_offsets, ANOFFSET, SIZEOF_N_SECTION_OFFSETS):
Remove.
(section_offsets): New typedef.
* symtab.c (fixup_section, get_msymbol_address): Update.
* symmisc.c (dump_msymbols): Update.
* symfile.h (relative_addr_info_to_section_offsets)
(symfile_map_offsets_to_segments): Update.
* symfile.c (build_section_addr_info_from_objfile)
(init_objfile_sect_indices): Update.
(struct place_section_arg): Change type of "offsets".
(place_section): Update.
(relative_addr_info_to_section_offsets): Change type of
"section_offsets". Remove "num_sections" parameter.
(default_symfile_offsets, syms_from_objfile_1)
(set_objfile_default_section_offset): Update.
(reread_symbols): No need to preserve section offsets by hand.
(symfile_map_offsets_to_segments): Change type of "offsets".
* stap-probe.c (relocate_address): Update.
* stabsread.h (process_one_symbol): Update.
* solib-target.c (struct lm_info_target) <offsets>: Change type.
(solib_target_relocate_section_addresses): Update.
* solib-svr4.c (enable_break, svr4_relocate_main_executable):
Update.
* solib-frv.c (frv_relocate_main_executable): Update.
* solib-dsbt.c (dsbt_relocate_main_executable): Update.
* solib-aix.c (solib_aix_get_section_offsets): Change return
type.
(solib_aix_solib_create_inferior_hook): Update.
* remote.c (remote_target::get_offsets): Update.
* psymtab.c (find_pc_sect_psymtab): Update.
* psympriv.h (struct partial_symbol) <address, text_low,
text_high>: Update.
* objfiles.h (obj_section_offset): Update.
(struct objfile) <section_offsets>: Change type.
<num_sections>: Remove.
(objfile_relocate): Update.
* objfiles.c (entry_point_address_query): Update
(relocate_one_symbol): Change type of "section_offsets".
(objfile_relocate1, objfile_relocate1): Change type of
"new_offsets".
(objfile_rebase1): Update.
* mipsread.c (mipscoff_symfile_read): Update.
(read_alphacoff_dynamic_symtab): Remove "section_offsets"
parameter.
* mdebugread.c (parse_symbol): Change type of "section_offsets".
(parse_external, psymtab_to_symtab_1): Update.
* machoread.c (macho_symfile_offsets): Update.
* ia64-tdep.c (ia64_find_unwind_table): Update.
* hppa-tdep.c (read_unwind_info): Update.
* hppa-bsd-tdep.c (hppabsd_find_global_pointer): Update.
* dwarf2read.c (create_addrmap_from_index)
(create_addrmap_from_aranges, dw2_find_pc_sect_compunit_symtab)
(process_psymtab_comp_unit_reader, add_partial_symbol)
(add_partial_subprogram, process_full_comp_unit)
(read_file_scope, read_func_scope, read_lexical_block_scope)
(read_call_site_scope, dwarf2_rnglists_process)
(dwarf2_ranges_process, dwarf2_ranges_read)
(dwarf_decode_lines_1, var_decode_location, new_symbol)
(dwarf2_fetch_die_loc_sect_off, dwarf2_per_cu_text_offset):
Update.
* dwarf2-frame.c (execute_cfa_program, dwarf2_frame_find_fde):
Update.
* dtrace-probe.c (dtrace_probe::get_relocated_address): Update.
* dbxread.c (read_dbx_symtab, read_ofile_symtab): Update.
(process_one_symbol): Change type of "section_offsets".
* ctfread.c (get_objfile_text_range): Update.
* coffread.c (coff_symtab_read, enter_linenos)
(process_coff_symbol): Update.
* coff-pe-read.c (add_pe_forwarded_sym): Update.
* amd64-windows-tdep.c (amd64_windows_find_unwind_info): Update.
Change-Id: I147eb967e9b44d82f4048039de7bb44b80cd72fb
215 lines
6.7 KiB
C++
215 lines
6.7 KiB
C++
/* Include file for stabs debugging format support functions.
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Copyright (C) 1986-2020 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef STABSREAD_H
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#define STABSREAD_H
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struct objfile;
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enum language;
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/* Definitions, prototypes, etc for stabs debugging format support
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functions. */
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#define HASHSIZE 127 /* Size of things hashed via
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hashname(). */
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/* Compute a small integer hash code for the given name. */
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extern int hashname (const char *name);
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/* Count symbols as they are processed, for error messages. */
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extern unsigned int symnum;
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#define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
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/* Function to invoke get the next symbol. Return the symbol name. */
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extern const char *(*next_symbol_text_func) (struct objfile *);
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/* Global variable which, when set, indicates that we are processing a
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.o file compiled with gcc */
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extern unsigned char processing_gcc_compilation;
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/* Nonzero if within a function (so symbols should be local, if
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nothing says specifically). */
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extern int within_function;
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/* Hash table of global symbols whose values are not known yet.
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They are chained thru the SYMBOL_VALUE_CHAIN, since we don't
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have the correct data for that slot yet.
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The use of the LOC_BLOCK code in this chain is nonstandard--
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it refers to a FORTRAN common block rather than the usual meaning, and
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the such LOC_BLOCK symbols use their fields in nonstandard ways. */
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extern struct symbol *global_sym_chain[HASHSIZE];
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extern void common_block_start (const char *, struct objfile *);
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extern void common_block_end (struct objfile *);
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/* Kludge for xcoffread.c */
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struct pending_stabs
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{
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int count;
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int length;
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char *stab[1];
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};
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extern struct pending_stabs *global_stabs;
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/* The type code that process_one_symbol saw on its previous invocation.
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Used to detect pairs of N_SO symbols. */
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extern int previous_stab_code;
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/* Support for Sun changes to dbx symbol format. */
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/* For each identified header file, we have a table of types defined
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in that header file.
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header_files maps header file names to their type tables.
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It is a vector of n_header_files elements.
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Each element describes one header file.
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It contains a vector of types.
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Sometimes it can happen that the same header file produces
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different results when included in different places.
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This can result from conditionals or from different
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things done before including the file.
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When this happens, there are multiple entries for the file in this table,
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one entry for each distinct set of results.
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The entries are distinguished by the INSTANCE field.
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The INSTANCE field appears in the N_BINCL and N_EXCL symbol table and is
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used to match header-file references to their corresponding data. */
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struct header_file
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{
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/* Name of header file */
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char *name;
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/* Numeric code distinguishing instances of one header file that
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produced different results when included. It comes from the
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N_BINCL or N_EXCL. */
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int instance;
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/* Pointer to vector of types */
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struct type **vector;
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/* Allocated length (# elts) of that vector */
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int length;
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};
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/* The table of header_files of this OBJFILE. */
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#define HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->header_files)
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/* The actual length of HEADER_FILES. */
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#define N_HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->n_header_files)
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/* The allocated lengh of HEADER_FILES. */
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#define N_ALLOCATED_HEADER_FILES(OBJFILE) \
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(DBX_SYMFILE_INFO (OBJFILE)->n_allocated_header_files)
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/* Within each object file, various header files are assigned numbers.
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A type is defined or referred to with a pair of numbers
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(FILENUM,TYPENUM) where FILENUM is the number of the header file
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and TYPENUM is the number within that header file.
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TYPENUM is the index within the vector of types for that header file.
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FILENUM == 0 is special; it refers to the main source of the object file,
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and not to any header file. FILENUM != 1 is interpreted by looking it up
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in the following table, which contains indices in header_files. */
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extern int *this_object_header_files;
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extern int n_this_object_header_files;
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extern int n_allocated_this_object_header_files;
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extern void cleanup_undefined_stabs_types (struct objfile *);
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extern long read_number (char **, int);
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extern struct symbol *define_symbol (CORE_ADDR, const char *, int, int,
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struct objfile *);
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extern void stabsread_init (void);
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extern void stabsread_new_init (void);
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extern void start_stabs (void);
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extern void end_stabs (void);
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extern void finish_global_stabs (struct objfile *objfile);
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/* Functions exported by dbxread.c. These are not in stabsread.c because
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they are only used by some stabs readers. */
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extern struct partial_symtab *dbx_end_psymtab
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(struct objfile *objfile, struct partial_symtab *pst,
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const char **include_list, int num_includes,
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int capping_symbol_offset, CORE_ADDR capping_text,
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struct partial_symtab **dependency_list, int number_dependencies,
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int textlow_not_set);
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extern void process_one_symbol (int, int, CORE_ADDR, const char *,
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const section_offsets &,
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struct objfile *, enum language);
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extern void elfstab_build_psymtabs (struct objfile *objfile,
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asection *stabsect,
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file_ptr stabstroffset,
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unsigned int stabstrsize);
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extern void coffstab_build_psymtabs
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(struct objfile *objfile,
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CORE_ADDR textaddr, unsigned int textsize,
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const std::vector<asection *> &stabs,
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file_ptr stabstroffset, unsigned int stabstrsize);
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extern void stabsect_build_psymtabs (struct objfile *objfile, char *stab_name,
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char *stabstr_name, char *text_name);
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extern int symbol_reference_defined (const char **);
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extern void ref_add (int, struct symbol *, const char *, CORE_ADDR);
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extern struct symbol *ref_search (int);
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extern void free_header_files (void);
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extern void init_header_files (void);
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/* Scan through all of the global symbols defined in the object file,
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assigning values to the debugging symbols that need to be assigned
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to. Get these symbols from the minimal symbol table. */
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extern void scan_file_globals (struct objfile *objfile);
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#endif /* STABSREAD_H */
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