/* Read coff symbol tables and convert to internal format, for GDB.
- Copyright (C) 1987-2019 Free Software Foundation, Inc.
+ Copyright (C) 1987-2020 Free Software Foundation, Inc.
Contributed by David D. Johnson, Brown University (ddj@cs.brown.edu).
This file is part of GDB.
#include "libcoff.h" /* FIXME secret internal data from BFD */
#include "objfiles.h"
#include "buildsym-legacy.h"
-#include "gdb-stabs.h"
#include "stabsread.h"
#include "complaints.h"
#include "target.h"
#include "psymtab.h"
#include "build-id.h"
-/* Key for COFF-associated data. */
-
-static const struct objfile_data *coff_objfile_data_key;
-
/* The objfile we are currently reading. */
static struct objfile *coffread_objfile;
struct coff_symfile_info
{
- file_ptr min_lineno_offset; /* Where in file lowest line#s are. */
- file_ptr max_lineno_offset; /* 1+last byte of line#s in file. */
-
- CORE_ADDR textaddr; /* Addr of .text section. */
- unsigned int textsize; /* Size of .text section. */
- struct stab_section_list *stabsects; /* .stab sections. */
- asection *stabstrsect; /* Section pointer for .stab section. */
- char *stabstrdata;
+ file_ptr min_lineno_offset = 0; /* Where in file lowest line#s are. */
+ file_ptr max_lineno_offset = 0; /* 1+last byte of line#s in file. */
+
+ CORE_ADDR textaddr = 0; /* Addr of .text section. */
+ unsigned int textsize = 0; /* Size of .text section. */
+ std::vector<asection *> *stabsects; /* .stab sections. */
+ asection *stabstrsect = nullptr; /* Section pointer for .stab section. */
+ char *stabstrdata = nullptr;
};
+/* Key for COFF-associated data. */
+
+static const struct objfile_key<coff_symfile_info> coff_objfile_data_key;
+
/* Translate an external name string into a user-visible name. */
#define EXTERNAL_NAME(string, abfd) \
(string[0] == bfd_get_symbol_leading_char (abfd) \
#define INITIAL_TYPE_VECTOR_LENGTH 160
+static char *linetab = NULL;
+static long linetab_offset;
+static unsigned long linetab_size;
+
+static char *stringtab = NULL;
+
extern void stabsread_clear_cache (void);
static struct type *coff_read_struct_type (int, int, int,
static void enter_linenos (long, int, int, struct objfile *);
-static void free_linetab (void);
-
-static void free_linetab_cleanup (void *ignore);
-
-static int init_lineno (bfd *, long, int);
+static int init_lineno (bfd *, long, int, gdb::unique_xmalloc_ptr<char> *);
static char *getsymname (struct internal_syment *);
static const char *coff_getfilename (union internal_auxent *);
-static void free_stringtab (void);
-
-static void free_stringtab_cleanup (void *ignore);
-
-static int init_stringtab (bfd *, long);
+static int init_stringtab (bfd *, long, gdb::unique_xmalloc_ptr<char> *);
static void read_one_sym (struct coff_symbol *,
struct internal_syment *,
const char *name;
csi = (struct coff_symfile_info *) csip;
- name = bfd_get_section_name (abfd, sectp);
+ name = bfd_section_name (sectp);
if (strcmp (name, ".text") == 0)
{
- csi->textaddr = bfd_section_vma (abfd, sectp);
- csi->textsize += bfd_section_size (abfd, sectp);
+ csi->textaddr = bfd_section_vma (sectp);
+ csi->textsize += bfd_section_size (sectp);
}
else if (startswith (name, ".text"))
{
- csi->textsize += bfd_section_size (abfd, sectp);
+ csi->textsize += bfd_section_size (sectp);
}
else if (strcmp (name, ".stabstr") == 0)
{
if (!isdigit (*s))
break;
if (*s == '\0')
- {
- struct stab_section_list *n, **pn;
-
- n = XNEW (struct stab_section_list);
- n->section = sectp;
- n->next = NULL;
- for (pn = &csi->stabsects; *pn != NULL; pn = &(*pn)->next)
- ;
- *pn = n;
-
- /* This will be run after coffstab_build_psymtabs is called
- in coff_symfile_read, at which point we no longer need
- the information. */
- make_cleanup (xfree, n);
- }
+ csi->stabsects->push_back (sectp);
}
}
args.resultp = §
bfd_map_over_sections (abfd, find_targ_sec, &args);
if (sect != NULL)
- addr = bfd_get_section_vma (abfd, sect);
+ addr = bfd_section_vma (sect);
return addr;
}
{
within_function = 0;
start_symtab (objfile,
- /* We fill in the filename later. start_symtab puts this pointer
- into last_source_file and we put it in subfiles->name, which
- end_symtab frees; that's why it must be malloc'd. */
- xstrdup (name),
+ name,
/* We never know the directory name for COFF. */
NULL,
/* The start address is irrelevant, since we call
is_import_fixup_symbol (struct coff_symbol *cs,
enum minimal_symbol_type type)
{
- /* The following is a bit of a heuristic using the characterictics
+ /* The following is a bit of a heuristic using the characteristics
of these fixup symbols, but should work well in practice... */
int i;
{
/* Because the value of these symbols is within a function code
range, these symbols interfere with the symbol-from-address
- reverse lookup; this manifests itselfs in backtraces, or any
+ reverse lookup; this manifests itself in backtraces, or any
other commands that prints symbolic addresses. Just pretend
these symbols do not exist. */
return NULL;
}
- return reader.record_with_info (cs->c_name, address, type, section);
+ return reader.record_full (cs->c_name, true, address, type, section);
}
\f
/* coff_symfile_init ()
static void
coff_symfile_init (struct objfile *objfile)
{
- struct dbx_symfile_info *dbx;
- struct coff_symfile_info *coff;
-
- /* Allocate struct to keep track of stab reading. */
- dbx = XCNEW (struct dbx_symfile_info);
- set_objfile_data (objfile, dbx_objfile_data_key, dbx);
-
/* Allocate struct to keep track of the symfile. */
- coff = XCNEW (struct coff_symfile_info);
- set_objfile_data (objfile, coff_objfile_data_key, coff);
+ coff_objfile_data_key.emplace (objfile);
/* COFF objects may be reordered, so set OBJF_REORDERED. If we
find this causes a significant slowdown in gdb then we could
struct coff_symfile_info *info;
bfd *abfd = objfile->obfd;
coff_data_type *cdata = coff_data (abfd);
- char *filename = bfd_get_filename (abfd);
+ const char *filename = bfd_get_filename (abfd);
int val;
unsigned int num_symbols;
int symtab_offset;
int stringtab_offset;
- struct cleanup *back_to;
int stabstrsize;
- info = (struct coff_symfile_info *) objfile_data (objfile,
- coff_objfile_data_key);
+ info = coff_objfile_data_key.get (objfile);
symfile_bfd = abfd; /* Kludge for swap routines. */
+ std::vector<asection *> stabsects;
+ scoped_restore restore_stabsects
+ = make_scoped_restore (&info->stabsects, &stabsects);
+
/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */
num_symbols = bfd_get_symcount (abfd); /* How many syms */
symtab_offset = cdata->sym_filepos; /* Symbol table file offset */
/* Allocate space for raw symbol and aux entries, based on their
space requirements as reported by BFD. */
- temp_sym = (char *) xmalloc
- (cdata->local_symesz + cdata->local_auxesz);
+ gdb::def_vector<char> temp_storage (cdata->local_symesz
+ + cdata->local_auxesz);
+ temp_sym = temp_storage.data ();
temp_aux = temp_sym + cdata->local_symesz;
- back_to = make_cleanup (free_current_contents, &temp_sym);
/* We need to know whether this is a PE file, because in PE files,
unlike standard COFF files, symbol values are stored as offsets
can avoid spurious error messages (and maybe run a little
faster!) by not even reading the line number table unless we have
symbols. */
+ scoped_restore restore_linetab = make_scoped_restore (&linetab);
+ gdb::unique_xmalloc_ptr<char> linetab_storage;
if (num_symbols > 0)
{
/* Read the line number table, all at once. */
bfd_map_over_sections (abfd, find_linenos, (void *) info);
- make_cleanup (free_linetab_cleanup, 0 /*ignore*/);
val = init_lineno (abfd, info->min_lineno_offset,
- info->max_lineno_offset - info->min_lineno_offset);
+ info->max_lineno_offset - info->min_lineno_offset,
+ &linetab_storage);
if (val < 0)
error (_("\"%s\": error reading line numbers."), filename);
}
/* Now read the string table, all at once. */
- make_cleanup (free_stringtab_cleanup, 0 /*ignore*/);
- val = init_stringtab (abfd, stringtab_offset);
+ scoped_restore restore_stringtab = make_scoped_restore (&stringtab);
+ gdb::unique_xmalloc_ptr<char> stringtab_storage;
+ val = init_stringtab (abfd, stringtab_offset, &stringtab_storage);
if (val < 0)
error (_("\"%s\": can't get string table"), filename);
if (pe_file)
{
- struct minimal_symbol *msym;
-
- ALL_OBJFILE_MSYMBOLS (objfile, msym)
+ for (minimal_symbol *msym : objfile->msymbols ())
{
- const char *name = MSYMBOL_LINKAGE_NAME (msym);
+ const char *name = msym->linkage_name ();
/* If the minimal symbols whose name are prefixed by "__imp_"
or "_imp_", get rid of the prefix, and search the minimal
if (!(objfile->flags & OBJF_READNEVER))
bfd_map_over_sections (abfd, coff_locate_sections, (void *) info);
- if (info->stabsects)
+ if (!info->stabsects->empty())
{
if (!info->stabstrsect)
{
bfd_get_section_contents? */
bfd_seek (abfd, abfd->where, 0);
- stabstrsize = bfd_section_size (abfd, info->stabstrsect);
+ stabstrsize = bfd_section_size (info->stabstrsect);
coffstab_build_psymtabs (objfile,
info->textaddr, info->textsize,
- info->stabsects,
+ *info->stabsects,
info->stabstrsect->filepos, stabstrsize);
}
if (dwarf2_has_info (objfile, NULL))
symfile_flags, objfile);
}
}
-
- do_cleanups (back_to);
}
static void
file with no symbols. */
if (in_source_file)
complete_symtab (filestring,
- cs->c_value + ANOFFSET (objfile->section_offsets,
- SECT_OFF_TEXT (objfile)),
+ (cs->c_value
+ + objfile->section_offsets[SECT_OFF_TEXT (objfile)]),
main_aux.x_scn.x_scnlen);
in_source_file = 0;
}
|| cs->c_sclass == C_THUMBEXTFUNC
|| cs->c_sclass == C_THUMBEXT
|| (pe_file && (cs->c_sclass == C_STAT)))
- offset = ANOFFSET (objfile->section_offsets, sec);
+ offset = objfile->section_offsets[sec];
if (bfd_section->flags & SEC_CODE)
{
NULL, cstk.start_addr,
fcn_cs_saved.c_value
+ fcn_aux_saved.x_sym.x_misc.x_fsize
- + ANOFFSET (objfile->section_offsets,
- SECT_OFF_TEXT (objfile)));
+ + objfile->section_offsets[SECT_OFF_TEXT (objfile)]);
within_function = 0;
}
break;
if (strcmp (cs->c_name, ".bb") == 0)
{
tmpaddr = cs->c_value;
- tmpaddr += ANOFFSET (objfile->section_offsets,
- SECT_OFF_TEXT (objfile));
+ tmpaddr += objfile->section_offsets[SECT_OFF_TEXT (objfile)];
push_context (++depth, tmpaddr);
}
else if (strcmp (cs->c_name, ".eb") == 0)
}
if (*get_local_symbols () && !outermost_context_p ())
{
- tmpaddr =
- cs->c_value + ANOFFSET (objfile->section_offsets,
- SECT_OFF_TEXT (objfile));
+ tmpaddr
+ = (cs->c_value
+ + objfile->section_offsets[SECT_OFF_TEXT (objfile)]);
/* Make a block for the local symbols within. */
finish_block (0, cstk.old_blocks, NULL,
cstk.start_addr, tmpaddr);
/* Patch up any opaque types (references to types that are not defined
in the file where they are referenced, e.g. "struct foo *bar"). */
{
- struct compunit_symtab *cu;
- struct symtab *s;
-
- ALL_OBJFILE_FILETABS (objfile, cu, s)
- patch_opaque_types (s);
+ for (compunit_symtab *cu : objfile->compunits ())
+ {
+ for (symtab *s : compunit_filetabs (cu))
+ patch_opaque_types (s);
+ }
}
coffread_objfile = NULL;
\f
/* Support for string table handling. */
-static char *stringtab = NULL;
-
static int
-init_stringtab (bfd *abfd, long offset)
+init_stringtab (bfd *abfd, long offset, gdb::unique_xmalloc_ptr<char> *storage)
{
long length;
int val;
unsigned char lengthbuf[4];
- free_stringtab ();
-
/* If the file is stripped, the offset might be zero, indicating no
string table. Just return with `stringtab' set to null. */
if (offset == 0)
if (val != sizeof lengthbuf || length < sizeof lengthbuf)
return 0;
- stringtab = (char *) xmalloc (length);
+ storage->reset ((char *) xmalloc (length));
+ stringtab = storage->get ();
/* This is in target format (probably not very useful, and not
currently used), not host format. */
memcpy (stringtab, lengthbuf, sizeof lengthbuf);
return 0;
}
-static void
-free_stringtab (void)
-{
- if (stringtab)
- xfree (stringtab);
- stringtab = NULL;
-}
-
-static void
-free_stringtab_cleanup (void *ignore)
-{
- free_stringtab ();
-}
-
static char *
getsymname (struct internal_syment *symbol_entry)
{
\f
/* Support for line number handling. */
-static char *linetab = NULL;
-static long linetab_offset;
-static unsigned long linetab_size;
-
/* Read in all the line numbers for fast lookups later. Leave them in
external (unswapped) format in memory; we'll swap them as we enter
them into GDB's data structures. */
static int
-init_lineno (bfd *abfd, long offset, int size)
+init_lineno (bfd *abfd, long offset, int size,
+ gdb::unique_xmalloc_ptr<char> *storage)
{
int val;
linetab_offset = offset;
linetab_size = size;
- free_linetab ();
-
if (size == 0)
return 0;
return -1;
/* Allocate the desired table, plus a sentinel. */
- linetab = (char *) xmalloc (size + local_linesz);
+ storage->reset ((char *) xmalloc (size + local_linesz));
+ linetab = storage->get ();
- val = bfd_bread (linetab, size, abfd);
+ val = bfd_bread (storage->get (), size, abfd);
if (val != size)
return -1;
return 0;
}
-static void
-free_linetab (void)
-{
- if (linetab)
- xfree (linetab);
- linetab = NULL;
-}
-
-static void
-free_linetab_cleanup (void *ignore)
-{
- free_linetab ();
-}
-
#if !defined (L_LNNO32)
#define L_LNNO32(lp) ((lp)->l_lnno)
#endif
if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line)
{
CORE_ADDR addr = lptr.l_addr.l_paddr;
- addr += ANOFFSET (objfile->section_offsets,
- SECT_OFF_TEXT (objfile));
+ addr += objfile->section_offsets[SECT_OFF_TEXT (objfile)];
record_line (get_current_subfile (),
first_line + L_LNNO32 (&lptr),
gdbarch_addr_bits_remove (gdbarch, addr));
static void
patch_opaque_types (struct symtab *s)
{
- struct block *b;
+ const struct block *b;
struct block_iterator iter;
struct symbol *real_sym;
&& TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR
&& TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0)
{
- const char *name = SYMBOL_LINKAGE_NAME (real_sym);
+ const char *name = real_sym->linkage_name ();
int hash = hashname (name);
struct symbol *sym, *prev;
prev = 0;
for (sym = opaque_type_chain[hash]; sym;)
{
- if (name[0] == SYMBOL_LINKAGE_NAME (sym)[0]
- && strcmp (name + 1, SYMBOL_LINKAGE_NAME (sym) + 1) == 0)
+ if (name[0] == sym->linkage_name ()[0]
+ && strcmp (name + 1, sym->linkage_name () + 1) == 0)
{
if (prev)
{
name = cs->c_name;
name = EXTERNAL_NAME (name, objfile->obfd);
- SYMBOL_SET_LANGUAGE (sym, get_current_subfile ()->language,
- &objfile->objfile_obstack);
- SYMBOL_SET_NAMES (sym, name, strlen (name), 1, objfile);
+ sym->set_language (get_current_subfile ()->language,
+ &objfile->objfile_obstack);
+ sym->compute_and_set_names (name, true, objfile->per_bfd);
/* default assumptions */
SYMBOL_VALUE (sym) = cs->c_value;
if (ISFCN (cs->c_type))
{
- SYMBOL_VALUE (sym) += ANOFFSET (objfile->section_offsets,
- SECT_OFF_TEXT (objfile));
+ SYMBOL_VALUE (sym) += objfile->section_offsets[SECT_OFF_TEXT (objfile)];
SYMBOL_TYPE (sym) =
lookup_function_type (decode_function_type (cs, cs->c_type,
aux, objfile));
case C_THUMBEXTFUNC:
case C_EXT:
SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC;
- SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value;
- SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets,
- SECT_OFF_TEXT (objfile));
+ SET_SYMBOL_VALUE_ADDRESS (sym,
+ (CORE_ADDR) cs->c_value
+ + objfile->section_offsets[SECT_OFF_TEXT (objfile)]);
add_symbol_to_list (sym, get_global_symbols ());
break;
case C_THUMBSTATFUNC:
case C_STAT:
SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC;
- SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value;
- SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets,
- SECT_OFF_TEXT (objfile));
+ SET_SYMBOL_VALUE_ADDRESS (sym,
+ (CORE_ADDR) cs->c_value
+ + objfile->section_offsets[SECT_OFF_TEXT (objfile)]);
if (within_function)
{
/* Static symbol of local scope. */
}
else
TYPE_NAME (SYMBOL_TYPE (sym)) =
- xstrdup (SYMBOL_LINKAGE_NAME (sym));
+ xstrdup (sym->linkage_name ());
}
/* Keep track of any type which points to empty structured
&& TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym)))
!= TYPE_CODE_UNDEF)
{
- int i = hashname (SYMBOL_LINKAGE_NAME (sym));
+ int i = hashname (sym->linkage_name ());
SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i];
opaque_type_chain[i] = sym;
names for anonymous enums, structures, and unions, like
"~0fake" or ".0fake". Thanks, but no thanks... */
if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
- if (SYMBOL_LINKAGE_NAME (sym) != NULL
- && *SYMBOL_LINKAGE_NAME (sym) != '~'
- && *SYMBOL_LINKAGE_NAME (sym) != '.')
- TYPE_NAME (SYMBOL_TYPE (sym)) =
- concat (SYMBOL_LINKAGE_NAME (sym), (char *)NULL);
+ if (sym->linkage_name () != NULL
+ && *sym->linkage_name () != '~'
+ && *sym->linkage_name () != '.')
+ TYPE_NAME (SYMBOL_TYPE (sym)) = xstrdup (sym->linkage_name ());
add_symbol_to_list (sym, get_file_symbols ());
break;
base_type = decode_type (cs, new_c_type, aux, objfile);
index_type = objfile_type (objfile)->builtin_int;
range_type
- = create_static_range_type ((struct type *) NULL,
- index_type, 0, n - 1);
+ = create_static_range_type (NULL, index_type, 0, n - 1);
type =
- create_array_type ((struct type *) NULL,
- base_type, range_type);
+ create_array_type (NULL, base_type, range_type);
}
return type;
}
list = newobj;
/* Save the data. */
- list->field.name
- = (const char *) obstack_copy0 (&objfile->objfile_obstack,
- name, strlen (name));
+ list->field.name = obstack_strdup (&objfile->objfile_obstack, name);
FIELD_TYPE (list->field) = decode_type (ms, ms->c_type,
&sub_aux, objfile);
SET_FIELD_BITPOS (list->field, 8 * ms->c_value);
list = newobj;
/* Save the data. */
- list->field.name
- = (const char *) obstack_copy0 (&objfile->objfile_obstack,
- name, strlen (name));
+ list->field.name = obstack_strdup (&objfile->objfile_obstack, name);
FIELD_TYPE (list->field) = decode_type (ms, ms->c_type,
&sub_aux, objfile);
SET_FIELD_BITPOS (list->field, ms->c_value);
case C_MOE:
sym = allocate_symbol (objfile);
- name = (char *) obstack_copy0 (&objfile->objfile_obstack, name,
- strlen (name));
- SYMBOL_SET_LINKAGE_NAME (sym, name);
+ name = obstack_strdup (&objfile->objfile_obstack, name);
+ sym->set_linkage_name (name);
SYMBOL_ACLASS_INDEX (sym) = LOC_CONST;
SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
SYMBOL_VALUE (sym) = ms->c_value;
struct symbol *xsym = syms->symbol[j];
SYMBOL_TYPE (xsym) = type;
- TYPE_FIELD_NAME (type, n) = SYMBOL_LINKAGE_NAME (xsym);
+ TYPE_FIELD_NAME (type, n) = xsym->linkage_name ();
SET_FIELD_ENUMVAL (TYPE_FIELD (type, n), SYMBOL_VALUE (xsym));
if (SYMBOL_VALUE (xsym) < 0)
unsigned_enum = 0;
&psym_functions
};
-/* Free the per-objfile COFF data. */
-
-static void
-coff_free_info (struct objfile *objfile, void *arg)
-{
- xfree (arg);
-}
-
void
_initialize_coffread (void)
{
add_symtab_fns (bfd_target_coff_flavour, &coff_sym_fns);
- coff_objfile_data_key = register_objfile_data_with_cleanup (NULL,
- coff_free_info);
-
coff_register_index
= register_symbol_register_impl (LOC_REGISTER, &coff_register_funcs);
}
projects / deliverable / binutils-gdb.git / blobdiff