/* GDB routines for manipulating the minimal symbol tables.
- Copyright (C) 1992-2019 Free Software Foundation, Inc.
+ Copyright (C) 1992-2021 Free Software Foundation, Inc.
Contributed by Cygnus Support, using pieces from other GDB modules.
This file is part of GDB.
#include "cp-support.h"
#include "language.h"
#include "cli/cli-utils.h"
-#include "common/symbol.h"
+#include "gdbsupport/symbol.h"
#include <algorithm>
#include "safe-ctype.h"
+#include "gdbsupport/parallel-for.h"
+
+#if CXX_STD_THREAD
+#include <mutex>
+#endif
/* See minsyms.h. */
case mst_file_bss:
case mst_data_gnu_ifunc:
{
- struct gdbarch *gdbarch = get_objfile_arch (objfile);
+ struct gdbarch *gdbarch = objfile->arch ();
CORE_ADDR pc
= gdbarch_convert_from_func_ptr_addr (gdbarch, msym_addr,
current_top_target ());
/* Add the minimal symbol SYM to an objfile's minsym hash table, TABLE. */
static void
add_minsym_to_hash_table (struct minimal_symbol *sym,
- struct minimal_symbol **table)
+ struct minimal_symbol **table,
+ unsigned int hash_value)
{
if (sym->hash_next == NULL)
{
- unsigned int hash
- = msymbol_hash (MSYMBOL_LINKAGE_NAME (sym)) % MINIMAL_SYMBOL_HASH_SIZE;
+ unsigned int hash = hash_value % MINIMAL_SYMBOL_HASH_SIZE;
sym->hash_next = table[hash];
table[hash] = sym;
TABLE. */
static void
add_minsym_to_demangled_hash_table (struct minimal_symbol *sym,
- struct objfile *objfile)
+ struct objfile *objfile,
+ unsigned int hash_value)
{
if (sym->demangled_hash_next == NULL)
{
- unsigned int hash = search_name_hash (MSYMBOL_LANGUAGE (sym),
- MSYMBOL_SEARCH_NAME (sym));
-
- objfile->per_bfd->demangled_hash_languages.set (MSYMBOL_LANGUAGE (sym));
+ objfile->per_bfd->demangled_hash_languages.set (sym->language ());
struct minimal_symbol **table
= objfile->per_bfd->msymbol_demangled_hash;
- unsigned int hash_index = hash % MINIMAL_SYMBOL_HASH_SIZE;
+ unsigned int hash_index = hash_value % MINIMAL_SYMBOL_HASH_SIZE;
sym->demangled_hash_next = table[hash_index];
table[hash_index] = sym;
}
msymbol != NULL;
msymbol = msymbol->hash_next)
{
- const char *symbol_name = MSYMBOL_LINKAGE_NAME (msymbol);
+ const char *symbol_name = msymbol->linkage_name ();
if (namecmp (symbol_name, lookup_name) == 0
&& found.maybe_collect (sfile, objfile, msymbol))
msymbol != NULL;
msymbol = msymbol->demangled_hash_next)
{
- const char *symbol_name = MSYMBOL_SEARCH_NAME (msymbol);
+ const char *symbol_name = msymbol->search_name ();
if (matcher (symbol_name, lookup_name, NULL)
&& found.maybe_collect (sfile, objfile, msymbol))
lookup_minimal_symbol (const char *name, const char *sfile,
struct objfile *objf)
{
- struct objfile *objfile;
found_minimal_symbols found;
unsigned int mangled_hash = msymbol_hash (name) % MINIMAL_SYMBOL_HASH_SIZE;
lookup_name_info lookup_name (name, symbol_name_match_type::FULL);
- for (objfile = object_files;
- objfile != NULL && found.external_symbol.minsym == NULL;
- objfile = objfile->next)
+ for (objfile *objfile : current_program_space->objfiles ())
{
+ if (found.external_symbol.minsym != NULL)
+ break;
+
if (objf == NULL || objf == objfile
|| objf == objfile->separate_debug_objfile_backlink)
{
% MINIMAL_SYMBOL_HASH_SIZE);
symbol_name_matcher_ftype *match
- = get_symbol_name_matcher (language_def (lang),
- lookup_name);
+ = language_def (lang)->get_symbol_name_matcher
+ (lookup_name);
struct minimal_symbol **msymbol_demangled_hash
= objfile->per_bfd->msymbol_demangled_hash;
return lookup_minimal_symbol (name, NULL, NULL);
}
-/* See common/symbol.h. */
+/* See gdbsupport/symbol.h. */
int
find_minimal_symbol_address (const char *name, CORE_ADDR *addr,
if (current_language->la_language == language_ada)
return lookup_name.ada ().lookup_name ().c_str ();
- return lookup_name.name ().c_str ();
+ return lookup_name.c_str ();
}
/* See minsyms.h. */
iter != NULL;
iter = iter->hash_next)
{
- if (mangled_cmp (MSYMBOL_LINKAGE_NAME (iter), name) == 0)
+ if (mangled_cmp (iter->linkage_name (), name) == 0)
if (callback (iter))
return;
}
enum language lang = (enum language) liter;
const language_defn *lang_def = language_def (lang);
symbol_name_matcher_ftype *name_match
- = get_symbol_name_matcher (lang_def, lookup_name);
+ = lang_def->get_symbol_name_matcher (lookup_name);
unsigned int hash
= lookup_name.search_name_hash (lang) % MINIMAL_SYMBOL_HASH_SIZE;
for (minimal_symbol *iter = objf->per_bfd->msymbol_demangled_hash[hash];
iter != NULL;
iter = iter->demangled_hash_next)
- if (name_match (MSYMBOL_SEARCH_NAME (iter), lookup_name, NULL))
+ if (name_match (iter->search_name (), lookup_name, NULL))
if (callback (iter))
return;
}
/* See minsyms.h. */
+bound_minimal_symbol
+lookup_minimal_symbol_linkage (const char *name, struct objfile *objf)
+{
+ unsigned int hash = msymbol_hash (name) % MINIMAL_SYMBOL_HASH_SIZE;
+
+ for (objfile *objfile : objf->separate_debug_objfiles ())
+ {
+ for (minimal_symbol *msymbol = objfile->per_bfd->msymbol_hash[hash];
+ msymbol != NULL;
+ msymbol = msymbol->hash_next)
+ {
+ if (strcmp (msymbol->linkage_name (), name) == 0
+ && (MSYMBOL_TYPE (msymbol) == mst_data
+ || MSYMBOL_TYPE (msymbol) == mst_bss))
+ return {msymbol, objfile};
+ }
+ }
+
+ return {};
+}
+
+/* See minsyms.h. */
+
struct bound_minimal_symbol
lookup_minimal_symbol_text (const char *name, struct objfile *objf)
{
- struct objfile *objfile;
struct minimal_symbol *msymbol;
struct bound_minimal_symbol found_symbol = { NULL, NULL };
struct bound_minimal_symbol found_file_symbol = { NULL, NULL };
unsigned int hash = msymbol_hash (name) % MINIMAL_SYMBOL_HASH_SIZE;
- for (objfile = object_files;
- objfile != NULL && found_symbol.minsym == NULL;
- objfile = objfile->next)
+ for (objfile *objfile : current_program_space->objfiles ())
{
+ if (found_symbol.minsym != NULL)
+ break;
+
if (objf == NULL || objf == objfile
|| objf == objfile->separate_debug_objfile_backlink)
{
msymbol != NULL && found_symbol.minsym == NULL;
msymbol = msymbol->hash_next)
{
- if (strcmp (MSYMBOL_LINKAGE_NAME (msymbol), name) == 0 &&
+ if (strcmp (msymbol->linkage_name (), name) == 0 &&
(MSYMBOL_TYPE (msymbol) == mst_text
|| MSYMBOL_TYPE (msymbol) == mst_text_gnu_ifunc
|| MSYMBOL_TYPE (msymbol) == mst_file_text))
lookup_minimal_symbol_by_pc_name (CORE_ADDR pc, const char *name,
struct objfile *objf)
{
- struct objfile *objfile;
struct minimal_symbol *msymbol;
unsigned int hash = msymbol_hash (name) % MINIMAL_SYMBOL_HASH_SIZE;
- for (objfile = object_files;
- objfile != NULL;
- objfile = objfile->next)
+ for (objfile *objfile : current_program_space->objfiles ())
{
if (objf == NULL || objf == objfile
|| objf == objfile->separate_debug_objfile_backlink)
msymbol = msymbol->hash_next)
{
if (MSYMBOL_VALUE_ADDRESS (objfile, msymbol) == pc
- && strcmp (MSYMBOL_LINKAGE_NAME (msymbol), name) == 0)
+ && strcmp (msymbol->linkage_name (), name) == 0)
return msymbol;
}
}
return NULL;
}
-/* See minsyms.h. */
-
-struct bound_minimal_symbol
-lookup_minimal_symbol_solib_trampoline (const char *name,
- struct objfile *objf)
-{
- struct objfile *objfile;
- struct minimal_symbol *msymbol;
- struct bound_minimal_symbol found_symbol = { NULL, NULL };
-
- unsigned int hash = msymbol_hash (name) % MINIMAL_SYMBOL_HASH_SIZE;
-
- for (objfile = object_files;
- objfile != NULL;
- objfile = objfile->next)
- {
- if (objf == NULL || objf == objfile
- || objf == objfile->separate_debug_objfile_backlink)
- {
- for (msymbol = objfile->per_bfd->msymbol_hash[hash];
- msymbol != NULL;
- msymbol = msymbol->hash_next)
- {
- if (strcmp (MSYMBOL_LINKAGE_NAME (msymbol), name) == 0 &&
- MSYMBOL_TYPE (msymbol) == mst_solib_trampoline)
- {
- found_symbol.objfile = objfile;
- found_symbol.minsym = msymbol;
- return found_symbol;
- }
- }
- }
- }
-
- return found_symbol;
-}
-
/* A helper function that makes *PC section-relative. This searches
the sections of OBJFILE and if *PC is in a section, it subtracts
the section offset and returns true. Otherwise it returns
gdb_assert_not_reached ("unhandled lookup_msym_prefer");
}
-/* Search through the minimal symbol table for each objfile and find
- the symbol whose address is the largest address that is still less
- than or equal to PC, and matches SECTION (which is not NULL).
- Returns a pointer to the minimal symbol if such a symbol is found,
- or NULL if PC is not in a suitable range.
+/* See minsyms.h.
+
Note that we need to look through ALL the minimal symbol tables
before deciding on the symbol that comes closest to the specified PC.
This is because objfiles can overlap, for example objfile A has .text
at 0x100 and .data at 0x40000 and objfile B has .text at 0x234 and
- .data at 0x40048.
-
- If WANT_TRAMPOLINE is set, prefer mst_solib_trampoline symbols when
- there are text and trampoline symbols at the same address.
- Otherwise prefer mst_text symbols. */
+ .data at 0x40048. */
bound_minimal_symbol
lookup_minimal_symbol_by_pc_section (CORE_ADDR pc_in, struct obj_section *section,
- lookup_msym_prefer prefer)
+ lookup_msym_prefer prefer,
+ bound_minimal_symbol *previous)
{
int lo;
int hi;
int newobj;
- struct objfile *objfile;
struct minimal_symbol *msymbol;
struct minimal_symbol *best_symbol = NULL;
struct objfile *best_objfile = NULL;
struct bound_minimal_symbol result;
+ if (previous != nullptr)
+ {
+ previous->minsym = nullptr;
+ previous->objfile = nullptr;
+ }
+
if (section == NULL)
{
section = find_pc_section (pc_in);
gdb_assert (section != NULL);
- for (objfile = section->objfile;
- objfile != NULL;
- objfile = objfile_separate_debug_iterate (section->objfile, objfile))
+ for (objfile *objfile : section->objfile->separate_debug_objfiles ())
{
CORE_ADDR pc = pc_in;
/* If this objfile has a minimal symbol table, go search it
- using a binary search. */
+ using a binary search. */
if (objfile->per_bfd->minimal_symbol_count > 0)
{
int best_zero_sized = -1;
- msymbol = objfile->per_bfd->msymbols.get ();
+ msymbol = objfile->per_bfd->msymbols.get ();
lo = 0;
hi = objfile->per_bfd->minimal_symbol_count - 1;
or equal to the desired pc value, we accomplish two things:
(1) the case where the pc value is larger than any minimal
symbol address is trivially solved, (2) the address associated
- with the hi index is always the one we want when the interation
+ with the hi index is always the one we want when the iteration
terminates. In essence, we are iterating the test interval
down until the pc value is pushed out of it from the high end.
}
/* If we have multiple symbols at the same address, we want
- hi to point to the last one. That way we can find the
- right symbol if it has an index greater than hi. */
+ hi to point to the last one. That way we can find the
+ right symbol if it has an index greater than hi. */
while (hi < objfile->per_bfd->minimal_symbol_count - 1
&& (MSYMBOL_VALUE_RAW_ADDRESS (&msymbol[hi])
== MSYMBOL_VALUE_RAW_ADDRESS (&msymbol[hi + 1])))
/* Some types of debug info, such as COFF,
don't fill the bfd_section member, so don't
throw away symbols on those platforms. */
- && MSYMBOL_OBJ_SECTION (objfile, &msymbol[hi]) != NULL
+ && msymbol[hi].obj_section (objfile) != nullptr
&& (!matching_obj_sections
- (MSYMBOL_OBJ_SECTION (objfile, &msymbol[hi]),
+ (msymbol[hi].obj_section (objfile),
section)))
{
hi--;
== MSYMBOL_SIZE (&msymbol[hi - 1]))
&& (MSYMBOL_VALUE_RAW_ADDRESS (&msymbol[hi])
== MSYMBOL_VALUE_RAW_ADDRESS (&msymbol[hi - 1]))
- && (MSYMBOL_OBJ_SECTION (objfile, &msymbol[hi])
- == MSYMBOL_OBJ_SECTION (objfile, &msymbol[hi - 1])))
+ && (msymbol[hi].obj_section (objfile)
+ == msymbol[hi - 1].obj_section (objfile)))
{
hi--;
continue;
if (best_zero_sized != -1)
hi = best_zero_sized;
else
- /* Go on to the next object file. */
- continue;
+ {
+ /* If needed record this symbol as the closest
+ previous symbol. */
+ if (previous != nullptr)
+ {
+ if (previous->minsym == nullptr
+ || (MSYMBOL_VALUE_RAW_ADDRESS (&msymbol[hi])
+ > MSYMBOL_VALUE_RAW_ADDRESS
+ (previous->minsym)))
+ {
+ previous->minsym = &msymbol[hi];
+ previous->objfile = objfile;
+ }
+ }
+ /* Go on to the next object file. */
+ continue;
+ }
}
/* The minimal symbol indexed by hi now is the best one in this
- objfile's minimal symbol table. See if it is the best one
- overall. */
+ objfile's minimal symbol table. See if it is the best one
+ overall. */
if (hi >= 0
&& ((best_symbol == NULL) ||
/* Return non-zero iff PC is in an STT_GNU_IFUNC function resolver. */
-int
+bool
in_gnu_ifunc_stub (CORE_ADDR pc)
{
bound_minimal_symbol msymbol
/* See elf_gnu_ifunc_resolve_name for its real implementation. */
-static int
+static bool
stub_gnu_ifunc_resolve_name (const char *function_name,
CORE_ADDR *function_address_p)
{
{
if (abfd != NULL)
return bfd_get_symbol_leading_char (abfd);
- if (symfile_objfile != NULL && symfile_objfile->obfd != NULL)
- return bfd_get_symbol_leading_char (symfile_objfile->obfd);
+ if (current_program_space->symfile_object_file != NULL)
+ {
+ objfile *objf = current_program_space->symfile_object_file;
+ if (objf->obfd != NULL)
+ return bfd_get_symbol_leading_char (objf->obfd);
+ }
return 0;
}
/* See minsyms.h. */
struct minimal_symbol *
-minimal_symbol_reader::record_full (const char *name, int name_len,
+minimal_symbol_reader::record_full (gdb::string_view name,
bool copy_name, CORE_ADDR address,
enum minimal_symbol_type ms_type,
int section)
lookup_minimal_symbol_by_pc would have no way of getting the
right one. */
if (ms_type == mst_file_text && name[0] == 'g'
- && (strcmp (name, GCC_COMPILED_FLAG_SYMBOL) == 0
- || strcmp (name, GCC2_COMPILED_FLAG_SYMBOL) == 0))
+ && (name == GCC_COMPILED_FLAG_SYMBOL
+ || name == GCC2_COMPILED_FLAG_SYMBOL))
return (NULL);
/* It's safe to strip the leading char here once, since the name
is also stored stripped in the minimal symbol table. */
if (name[0] == get_symbol_leading_char (m_objfile->obfd))
- {
- ++name;
- --name_len;
- }
+ name = name.substr (1);
if (ms_type == mst_file_text && startswith (name, "__gnu_compiled"))
return (NULL);
if (symtab_create_debug >= 2)
- printf_unfiltered ("Recording minsym: %-21s %18s %4d %s\n",
- mst_str (ms_type), hex_string (address), section, name);
+ printf_unfiltered ("Recording minsym: %-21s %18s %4d %.*s\n",
+ mst_str (ms_type), hex_string (address), section,
+ (int) name.size (), name.data ());
if (m_msym_bunch_index == BUNCH_SIZE)
{
m_msym_bunch = newobj;
}
msymbol = &m_msym_bunch->contents[m_msym_bunch_index];
- symbol_set_language (msymbol, language_auto,
- &m_objfile->per_bfd->storage_obstack);
- symbol_set_names (msymbol, name, name_len, copy_name, m_objfile->per_bfd);
+ msymbol->set_language (language_auto,
+ &m_objfile->per_bfd->storage_obstack);
+
+ if (copy_name)
+ msymbol->m_name = obstack_strndup (&m_objfile->per_bfd->storage_obstack,
+ name.data (), name.size ());
+ else
+ msymbol->m_name = name.data ();
SET_MSYMBOL_VALUE_ADDRESS (msymbol, address);
- MSYMBOL_SECTION (msymbol) = section;
+ msymbol->set_section_index (section);
MSYMBOL_TYPE (msymbol) = ms_type;
return msymbol;
}
-/* Compare two minimal symbols by address and return a signed result based
- on unsigned comparisons, so that we sort into unsigned numeric order.
+/* Compare two minimal symbols by address and return true if FN1's address
+ is less than FN2's, so that we sort into unsigned numeric order.
Within groups with the same address, sort by name. */
-static int
-compare_minimal_symbols (const void *fn1p, const void *fn2p)
+static inline bool
+minimal_symbol_is_less_than (const minimal_symbol &fn1,
+ const minimal_symbol &fn2)
{
- const struct minimal_symbol *fn1;
- const struct minimal_symbol *fn2;
-
- fn1 = (const struct minimal_symbol *) fn1p;
- fn2 = (const struct minimal_symbol *) fn2p;
-
- if (MSYMBOL_VALUE_RAW_ADDRESS (fn1) < MSYMBOL_VALUE_RAW_ADDRESS (fn2))
+ if (MSYMBOL_VALUE_RAW_ADDRESS (&fn1) < MSYMBOL_VALUE_RAW_ADDRESS (&fn2))
{
- return (-1); /* addr 1 is less than addr 2. */
+ return true; /* addr 1 is less than addr 2. */
}
- else if (MSYMBOL_VALUE_RAW_ADDRESS (fn1) > MSYMBOL_VALUE_RAW_ADDRESS (fn2))
+ else if (MSYMBOL_VALUE_RAW_ADDRESS (&fn1) > MSYMBOL_VALUE_RAW_ADDRESS (&fn2))
{
- return (1); /* addr 1 is greater than addr 2. */
+ return false; /* addr 1 is greater than addr 2. */
}
else
/* addrs are equal: sort by name */
{
- const char *name1 = MSYMBOL_LINKAGE_NAME (fn1);
- const char *name2 = MSYMBOL_LINKAGE_NAME (fn2);
+ const char *name1 = fn1.linkage_name ();
+ const char *name2 = fn2.linkage_name ();
if (name1 && name2) /* both have names */
- return strcmp (name1, name2);
+ return strcmp (name1, name2) < 0;
else if (name2)
- return 1; /* fn1 has no name, so it is "less". */
+ return true; /* fn1 has no name, so it is "less". */
else if (name1) /* fn2 has no name, so it is "less". */
- return -1;
+ return false;
else
- return (0); /* Neither has a name, so they're equal. */
+ return false; /* Neither has a name, so they're equal. */
}
}
{
if (MSYMBOL_VALUE_RAW_ADDRESS (copyfrom)
== MSYMBOL_VALUE_RAW_ADDRESS ((copyfrom + 1))
- && MSYMBOL_SECTION (copyfrom) == MSYMBOL_SECTION (copyfrom + 1)
- && strcmp (MSYMBOL_LINKAGE_NAME (copyfrom),
- MSYMBOL_LINKAGE_NAME ((copyfrom + 1))) == 0)
+ && (copyfrom->section_index ()
+ == (copyfrom + 1)->section_index ())
+ && strcmp (copyfrom->linkage_name (),
+ (copyfrom + 1)->linkage_name ()) == 0)
{
if (MSYMBOL_TYPE ((copyfrom + 1)) == mst_unknown)
{
return (mcount);
}
+static void
+clear_minimal_symbol_hash_tables (struct objfile *objfile)
+{
+ for (size_t i = 0; i < MINIMAL_SYMBOL_HASH_SIZE; i++)
+ {
+ objfile->per_bfd->msymbol_hash[i] = 0;
+ objfile->per_bfd->msymbol_demangled_hash[i] = 0;
+ }
+}
+
+/* This struct is used to store values we compute for msymbols on the
+ background threads but don't need to keep around long term. */
+struct computed_hash_values
+{
+ /* Length of the linkage_name of the symbol. */
+ size_t name_length;
+ /* Hash code (using fast_hash) of the linkage_name. */
+ hashval_t mangled_name_hash;
+ /* The msymbol_hash of the linkage_name. */
+ unsigned int minsym_hash;
+ /* The msymbol_hash of the search_name. */
+ unsigned int minsym_demangled_hash;
+};
+
/* Build (or rebuild) the minimal symbol hash tables. This is necessary
after compacting or sorting the table since the entries move around
thus causing the internal minimal_symbol pointers to become jumbled. */
static void
-build_minimal_symbol_hash_tables (struct objfile *objfile)
+build_minimal_symbol_hash_tables
+ (struct objfile *objfile,
+ const std::vector<computed_hash_values>& hash_values)
{
int i;
struct minimal_symbol *msym;
- /* Clear the hash tables. */
- for (i = 0; i < MINIMAL_SYMBOL_HASH_SIZE; i++)
- {
- objfile->per_bfd->msymbol_hash[i] = 0;
- objfile->per_bfd->msymbol_demangled_hash[i] = 0;
- }
-
- /* Now, (re)insert the actual entries. */
- for ((i = objfile->per_bfd->minimal_symbol_count,
+ /* (Re)insert the actual entries. */
+ int mcount = objfile->per_bfd->minimal_symbol_count;
+ for ((i = 0,
msym = objfile->per_bfd->msymbols.get ());
- i > 0;
- i--, msym++)
+ i < mcount;
+ i++, msym++)
{
msym->hash_next = 0;
- add_minsym_to_hash_table (msym, objfile->per_bfd->msymbol_hash);
+ add_minsym_to_hash_table (msym, objfile->per_bfd->msymbol_hash,
+ hash_values[i].minsym_hash);
msym->demangled_hash_next = 0;
- if (MSYMBOL_SEARCH_NAME (msym) != MSYMBOL_LINKAGE_NAME (msym))
- add_minsym_to_demangled_hash_table (msym, objfile);
+ if (msym->search_name () != msym->linkage_name ())
+ add_minsym_to_demangled_hash_table
+ (msym, objfile, hash_values[i].minsym_demangled_hash);
}
}
}
/* Allocate enough space, into which we will gather the bunches
- of new and existing minimal symbols, sort them, and then
- compact out the duplicate entries. Once we have a final
- table, we will give back the excess space. */
+ of new and existing minimal symbols, sort them, and then
+ compact out the duplicate entries. Once we have a final
+ table, we will give back the excess space. */
alloc_count = m_msym_count + m_objfile->per_bfd->minimal_symbol_count;
gdb::unique_xmalloc_ptr<minimal_symbol>
* sizeof (struct minimal_symbol));
/* Walk through the list of minimal symbol bunches, adding each symbol
- to the new contiguous array of symbols. Note that we start with the
- current, possibly partially filled bunch (thus we use the current
- msym_bunch_index for the first bunch we copy over), and thereafter
- each bunch is full. */
+ to the new contiguous array of symbols. Note that we start with the
+ current, possibly partially filled bunch (thus we use the current
+ msym_bunch_index for the first bunch we copy over), and thereafter
+ each bunch is full. */
mcount = m_objfile->per_bfd->minimal_symbol_count;
/* Sort the minimal symbols by address. */
- qsort (msymbols, mcount, sizeof (struct minimal_symbol),
- compare_minimal_symbols);
+ std::sort (msymbols, msymbols + mcount, minimal_symbol_is_less_than);
/* Compact out any duplicates, and free up whatever space we are
- no longer using. */
+ no longer using. */
mcount = compact_minimal_symbols (msymbols, mcount, m_objfile);
msym_holder.reset (XRESIZEVEC (struct minimal_symbol,
mcount));
/* Attach the minimal symbol table to the specified objfile.
- The strings themselves are also located in the storage_obstack
- of this objfile. */
+ The strings themselves are also located in the storage_obstack
+ of this objfile. */
+
+ if (m_objfile->per_bfd->minimal_symbol_count != 0)
+ clear_minimal_symbol_hash_tables (m_objfile);
m_objfile->per_bfd->minimal_symbol_count = mcount;
m_objfile->per_bfd->msymbols = std::move (msym_holder);
- build_minimal_symbol_hash_tables (m_objfile);
+#if CXX_STD_THREAD
+ /* Mutex that is used when modifying or accessing the demangled
+ hash table. */
+ std::mutex demangled_mutex;
+#endif
+
+ std::vector<computed_hash_values> hash_values (mcount);
+
+ msymbols = m_objfile->per_bfd->msymbols.get ();
+ gdb::parallel_for_each
+ (&msymbols[0], &msymbols[mcount],
+ [&] (minimal_symbol *start, minimal_symbol *end)
+ {
+ for (minimal_symbol *msym = start; msym < end; ++msym)
+ {
+ size_t idx = msym - msymbols;
+ hash_values[idx].name_length = strlen (msym->linkage_name ());
+ if (!msym->name_set)
+ {
+ /* This will be freed later, by compute_and_set_names. */
+ char *demangled_name
+ = symbol_find_demangled_name (msym, msym->linkage_name ());
+ msym->set_demangled_name
+ (demangled_name, &m_objfile->per_bfd->storage_obstack);
+ msym->name_set = 1;
+ }
+ /* This mangled_name_hash computation has to be outside of
+ the name_set check, or compute_and_set_names below will
+ be called with an invalid hash value. */
+ hash_values[idx].mangled_name_hash
+ = fast_hash (msym->linkage_name (),
+ hash_values[idx].name_length);
+ hash_values[idx].minsym_hash
+ = msymbol_hash (msym->linkage_name ());
+ /* We only use this hash code if the search name differs
+ from the linkage name. See the code in
+ build_minimal_symbol_hash_tables. */
+ if (msym->search_name () != msym->linkage_name ())
+ hash_values[idx].minsym_demangled_hash
+ = search_name_hash (msym->language (), msym->search_name ());
+ }
+ {
+ /* To limit how long we hold the lock, we only acquire it here
+ and not while we demangle the names above. */
+#if CXX_STD_THREAD
+ std::lock_guard<std::mutex> guard (demangled_mutex);
+#endif
+ for (minimal_symbol *msym = start; msym < end; ++msym)
+ {
+ size_t idx = msym - msymbols;
+ msym->compute_and_set_names
+ (gdb::string_view (msym->linkage_name (),
+ hash_values[idx].name_length),
+ false,
+ m_objfile->per_bfd,
+ hash_values[idx].mangled_name_hash);
+ }
+ }
+ });
+
+ build_minimal_symbol_hash_tables (m_objfile, hash_values);
}
}
|| MSYMBOL_TYPE (msymbol) == mst_text_gnu_ifunc
|| MSYMBOL_TYPE (msymbol) == mst_data
|| MSYMBOL_TYPE (msymbol) == mst_data_gnu_ifunc)
- && strcmp (MSYMBOL_LINKAGE_NAME (msymbol),
- MSYMBOL_LINKAGE_NAME (tsymbol)) == 0)
+ && strcmp (msymbol->linkage_name (),
+ tsymbol->linkage_name ()) == 0)
{
CORE_ADDR func;
CORE_ADDR
minimal_symbol_upper_bound (struct bound_minimal_symbol minsym)
{
- int i;
short section;
struct obj_section *obj_section;
CORE_ADDR result;
- struct minimal_symbol *msymbol;
+ struct minimal_symbol *iter, *msymbol;
gdb_assert (minsym.minsym != NULL);
other sections, to find the next symbol in this section with a
different address. */
+ struct minimal_symbol *past_the_end
+ = (minsym.objfile->per_bfd->msymbols.get ()
+ + minsym.objfile->per_bfd->minimal_symbol_count);
msymbol = minsym.minsym;
- section = MSYMBOL_SECTION (msymbol);
- for (i = 1; MSYMBOL_LINKAGE_NAME (msymbol + i) != NULL; i++)
+ section = msymbol->section_index ();
+ for (iter = msymbol + 1; iter != past_the_end; ++iter)
{
- if ((MSYMBOL_VALUE_RAW_ADDRESS (msymbol + i)
+ if ((MSYMBOL_VALUE_RAW_ADDRESS (iter)
!= MSYMBOL_VALUE_RAW_ADDRESS (msymbol))
- && MSYMBOL_SECTION (msymbol + i) == section)
+ && iter->section_index () == section)
break;
}
- obj_section = MSYMBOL_OBJ_SECTION (minsym.objfile, minsym.minsym);
- if (MSYMBOL_LINKAGE_NAME (msymbol + i) != NULL
- && (MSYMBOL_VALUE_ADDRESS (minsym.objfile, msymbol + i)
+ obj_section = minsym.obj_section ();
+ if (iter != past_the_end
+ && (MSYMBOL_VALUE_ADDRESS (minsym.objfile, iter)
< obj_section_endaddr (obj_section)))
- result = MSYMBOL_VALUE_ADDRESS (minsym.objfile, msymbol + i);
+ result = MSYMBOL_VALUE_ADDRESS (minsym.objfile, iter);
else
/* We got the start address from the last msymbol in the objfile.
So the end address is the end of the section. */