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Regard whitespace Rev 6323 → Rev 6324

/contrib/toolchain/binutils/bfd/coffgen.c
1,7 → 1,5
/* Support for the generic parts of COFF, for BFD.
Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
Copyright (C) 1990-2015 Free Software Foundation, Inc.
Written by Cygnus Support.
 
This file is part of BFD, the Binary File Descriptor library.
86,9 → 84,8
strings = _bfd_coff_read_string_table (abfd);
if (strings == NULL)
return FALSE;
/* FIXME: For extra safety, we should make sure that
strindex does not run us past the end, but right now we
don't know the length of the string table. */
if ((bfd_size_type)(strindex + 2) >= obj_coff_strings_len (abfd))
return FALSE;
strings += strindex;
name = (char *) bfd_alloc (abfd,
(bfd_size_type) strlen (strings) + 1 + 1);
149,8 → 146,9
/* Compress/decompress DWARF debug sections with names: .debug_* and
.zdebug_*, after the section flags is set. */
if ((flags & SEC_DEBUGGING)
&& strlen (name) > 7
&& ((name[1] == 'd' && name[6] == '_')
|| (name[1] == 'z' && name[7] == '_')))
|| (strlen (name) > 8 && name[1] == 'z' && name[7] == '_')))
{
enum { nothing, compress, decompress } action = nothing;
char *new_name = NULL;
180,6 → 178,8
abfd, name);
return FALSE;
}
if (return_section->compress_status == COMPRESS_SECTION_DONE)
{
if (name[1] != 'z')
{
unsigned int len = strlen (name);
191,6 → 191,7
new_name[1] = 'z';
memcpy (new_name + 2, name + 1, len);
}
}
break;
case decompress:
if (!bfd_init_section_decompress_status (abfd, return_section))
368,6 → 369,10
bfd_release (abfd, opthdr);
return NULL;
}
/* PR 17512: file: 11056-1136-0.004. */
if (internal_f.f_opthdr < aoutsz)
memset (((char *) opthdr) + internal_f.f_opthdr, 0, aoutsz - internal_f.f_opthdr);
 
bfd_coff_swap_aouthdr_in (abfd, opthdr, (void *) &internal_a);
bfd_release (abfd, opthdr);
}
466,6 → 471,11
if (strings == NULL)
return NULL;
}
/* PR 17910: Only check for string overflow if the length has been set.
Some DLLs, eg those produced by Visual Studio, may not set the length field. */
if (obj_coff_strings_len (abfd) > 0
&& sym->_n._n_n._n_offset >= obj_coff_strings_len (abfd))
return NULL;
return strings + sym->_n._n_n._n_offset;
}
}
629,22 → 639,6
return total;
}
 
/* Takes a bfd and a symbol, returns a pointer to the coff specific
area of the symbol if there is one. */
 
coff_symbol_type *
coff_symbol_from (bfd *ignore_abfd ATTRIBUTE_UNUSED,
asymbol *symbol)
{
if (!bfd_family_coff (bfd_asymbol_bfd (symbol)))
return (coff_symbol_type *) NULL;
 
if (bfd_asymbol_bfd (symbol)->tdata.coff_obj_data == (coff_data_type *) NULL)
return (coff_symbol_type *) NULL;
 
return (coff_symbol_type *) symbol;
}
 
static void
fixup_symbol_value (bfd *abfd,
coff_symbol_type *coff_symbol_ptr,
761,7 → 755,9
 
for (symbol_index = 0; symbol_index < symbol_count; symbol_index++)
{
coff_symbol_type *coff_symbol_ptr = coff_symbol_from (bfd_ptr, symbol_ptr_ptr[symbol_index]);
coff_symbol_type *coff_symbol_ptr;
 
coff_symbol_ptr = coff_symbol_from (symbol_ptr_ptr[symbol_index]);
symbol_ptr_ptr[symbol_index]->udata.i = symbol_index;
if (coff_symbol_ptr && coff_symbol_ptr->native)
{
768,6 → 764,7
combined_entry_type *s = coff_symbol_ptr->native;
int i;
 
BFD_ASSERT (s->is_sym);
if (s->u.syment.n_sclass == C_FILE)
{
if (last_file != NULL)
804,14 → 801,15
 
for (symbol_index = 0; symbol_index < symbol_count; symbol_index++)
{
coff_symbol_type *coff_symbol_ptr =
coff_symbol_from (bfd_ptr, symbol_ptr_ptr[symbol_index]);
coff_symbol_type *coff_symbol_ptr;
 
coff_symbol_ptr = coff_symbol_from (symbol_ptr_ptr[symbol_index]);
if (coff_symbol_ptr && coff_symbol_ptr->native)
{
int i;
combined_entry_type *s = coff_symbol_ptr->native;
 
BFD_ASSERT (s->is_sym);
if (s->fix_value)
{
/* FIXME: We should use a union here. */
835,6 → 833,8
for (i = 0; i < s->u.syment.n_numaux; i++)
{
combined_entry_type *a = s + i + 1;
 
BFD_ASSERT (! a->is_sym);
if (a->fix_tag)
{
a->u.auxent.x_sym.x_tagndx.l =
878,6 → 878,7
}
name_length = strlen (name);
 
BFD_ASSERT (native->is_sym);
if (native->u.syment.n_sclass == C_FILE
&& native->u.syment.n_numaux > 0)
{
893,6 → 894,7
else
strncpy (native->u.syment._n._n_name, ".file", SYMNMLEN);
 
BFD_ASSERT (! (native + 1)->is_sym);
auxent = &(native + 1)->u.auxent;
 
filnmlen = bfd_coff_filnmlen (abfd);
995,6 → 997,8
void * buf;
bfd_size_type symesz;
 
BFD_ASSERT (native->is_sym);
 
if (native->u.syment.n_sclass == C_FILE)
symbol->flags |= BSF_DEBUGGING;
 
1035,6 → 1039,7
return FALSE;
for (j = 0; j < native->u.syment.n_numaux; j++)
{
BFD_ASSERT (! (native + j + 1)->is_sym);
bfd_coff_swap_aux_out (abfd,
&((native + j + 1)->u.auxent),
type, n_sclass, (int) j,
1084,6 → 1089,8
return TRUE;
}
native = dummy;
native->is_sym = TRUE;
native[1].is_sym = FALSE;
native->u.syment.n_type = T_NULL;
native->u.syment.n_flags = 0;
native->u.syment.n_numaux = 0;
1124,7 → 1131,7
/* Copy the any flags from the file header into the symbol.
FIXME: Why? */
{
coff_symbol_type *c = coff_symbol_from (abfd, symbol);
coff_symbol_type *c = coff_symbol_from (symbol);
if (c != (coff_symbol_type *) NULL)
native->u.syment.n_flags = bfd_asymbol_bfd (&c->symbol)->flags;
}
1169,6 → 1176,7
return TRUE;
}
 
BFD_ASSERT (native->is_sym);
/* If this symbol has an associated line number, we must store the
symbol index in the line number field. We also tag the auxent to
point to the right place in the lineno table. */
1255,7 → 1263,7
for (p = abfd->outsymbols, i = 0; i < limit; i++, p++)
{
asymbol *symbol = *p;
coff_symbol_type *c_symbol = coff_symbol_from (abfd, symbol);
coff_symbol_type *c_symbol = coff_symbol_from (symbol);
 
if (c_symbol == (coff_symbol_type *) NULL
|| c_symbol->native == (combined_entry_type *) NULL)
1278,6 → 1286,7
symbol which has no associated section and we do not have to
worry about this, all we need to know is that it is local. */
current_error_handler = bfd_set_error_handler (null_error_handler);
BFD_ASSERT (c_symbol->native->is_sym);
sym_class = bfd_coff_classify_symbol (abfd,
&c_symbol->native->u.syment);
(void) bfd_set_error_handler (current_error_handler);
1354,7 → 1363,7
{
asymbol *q = *p;
size_t name_length = strlen (q->name);
coff_symbol_type *c_symbol = coff_symbol_from (abfd, q);
coff_symbol_type *c_symbol = coff_symbol_from (q);
size_t maxlen;
 
/* Figure out whether the symbol name should go in the string
1370,6 → 1379,9
file name, nor does it go in the .debug section. */
maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN;
 
else if (! c_symbol->native->is_sym)
maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN;
 
else if (bfd_coff_symname_in_debug (abfd,
&c_symbol->native->u.syment))
/* This symbol name is in the XCOFF .debug section.
1460,6 → 1472,7
{
/* Found a linenumber entry, output. */
struct internal_lineno out;
 
memset ((void *) & out, 0, sizeof (out));
out.l_lnno = 0;
out.l_addr.l_symndx = l->u.offset;
1507,6 → 1520,7
unsigned int type = symbol->u.syment.n_type;
unsigned int n_sclass = symbol->u.syment.n_sclass;
 
BFD_ASSERT (symbol->is_sym);
if (coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook)
{
if ((*coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook)
1520,6 → 1534,7
if (n_sclass == C_FILE)
return;
 
BFD_ASSERT (! auxent->is_sym);
/* Otherwise patch up. */
#define N_TMASK coff_data (abfd)->local_n_tmask
#define N_BTSHFT coff_data (abfd)->local_n_btshft
1547,7 → 1562,7
we didn't want to go to the trouble until someone needed it. */
 
static char *
build_debug_section (bfd *abfd)
build_debug_section (bfd *abfd, asection ** sect_return)
{
char *debug_section;
file_ptr position;
1575,6 → 1590,8
|| bfd_bread (debug_section, sec_size, abfd) != sec_size
|| bfd_seek (abfd, position, SEEK_SET) != 0)
return NULL;
 
* sect_return = sect;
return debug_section;
}
 
1637,7 → 1654,9
 
/* Read in the external strings. The strings are not loaded until
they are needed. This is because we have no simple way of
detecting a missing string table in an archive. */
detecting a missing string table in an archive. If the strings
are loaded then the STRINGS and STRINGS_LEN fields in the
coff_tdata structure will be set. */
 
const char *
_bfd_coff_read_string_table (bfd *abfd)
1687,10 → 1706,16
return NULL;
}
 
strings = (char *) bfd_malloc (strsize);
strings = (char *) bfd_malloc (strsize + 1);
if (strings == NULL)
return NULL;
 
/* PR 17521 file: 079-54929-0.004.
A corrupt file could contain an index that points into the first
STRING_SIZE_SIZE bytes of the string table, so make sure that
they are zero. */
memset (strings, 0, STRING_SIZE_SIZE);
 
if (bfd_bread (strings + STRING_SIZE_SIZE, strsize - STRING_SIZE_SIZE, abfd)
!= strsize - STRING_SIZE_SIZE)
{
1699,7 → 1724,9
}
 
obj_coff_strings (abfd) = strings;
 
obj_coff_strings_len (abfd) = strsize;
/* Terminate the string table, just in case. */
strings[strsize] = 0;
return strings;
}
 
1719,6 → 1746,7
{
free (obj_coff_strings (abfd));
obj_coff_strings (abfd) = NULL;
obj_coff_strings_len (abfd) = 0;
}
return TRUE;
}
1739,12 → 1767,16
char *raw_src;
char *raw_end;
const char *string_table = NULL;
char *debug_section = NULL;
asection * debug_sec = NULL;
char *debug_sec_data = NULL;
bfd_size_type size;
 
if (obj_raw_syments (abfd) != NULL)
return obj_raw_syments (abfd);
 
if (! _bfd_coff_get_external_symbols (abfd))
return NULL;
 
size = obj_raw_syment_count (abfd) * sizeof (combined_entry_type);
internal = (combined_entry_type *) bfd_zalloc (abfd, size);
if (internal == NULL && size != 0)
1751,9 → 1783,6
return NULL;
internal_end = internal + obj_raw_syment_count (abfd);
 
if (! _bfd_coff_get_external_symbols (abfd))
return NULL;
 
raw_src = (char *) obj_coff_external_syms (abfd);
 
/* Mark the end of the symbols. */
1768,17 → 1797,35
raw_src < raw_end;
raw_src += symesz, internal_ptr++)
{
unsigned int i;
 
unsigned int i;
bfd_coff_swap_sym_in (abfd, (void *) raw_src,
(void *) & internal_ptr->u.syment);
symbol_ptr = internal_ptr;
internal_ptr->is_sym = TRUE;
 
/* PR 17512: file: 1353-1166-0.004. */
if (symbol_ptr->u.syment.n_sclass == C_FILE
&& symbol_ptr->u.syment.n_numaux > 0
&& raw_src + symesz + symbol_ptr->u.syment.n_numaux
* symesz > raw_end)
{
bfd_release (abfd, internal);
return NULL;
}
 
for (i = 0;
i < symbol_ptr->u.syment.n_numaux;
i++)
{
internal_ptr++;
/* PR 17512: Prevent buffer overrun. */
if (internal_ptr >= internal_end)
{
bfd_release (abfd, internal);
return NULL;
}
 
raw_src += symesz;
bfd_coff_swap_aux_in (abfd, (void *) raw_src,
symbol_ptr->u.syment.n_type,
1785,6 → 1832,8
symbol_ptr->u.syment.n_sclass,
(int) i, symbol_ptr->u.syment.n_numaux,
&(internal_ptr->u.auxent));
 
internal_ptr->is_sym = FALSE;
coff_pointerize_aux (abfd, internal, symbol_ptr, i,
internal_ptr);
}
1798,12 → 1847,18
for (internal_ptr = internal; internal_ptr < internal_end;
internal_ptr++)
{
BFD_ASSERT (internal_ptr->is_sym);
 
if (internal_ptr->u.syment.n_sclass == C_FILE
&& internal_ptr->u.syment.n_numaux > 0)
{
combined_entry_type * aux = internal_ptr + 1;
 
/* Make a file symbol point to the name in the auxent, since
the text ".file" is redundant. */
if ((internal_ptr + 1)->u.auxent.x_file.x_n.x_zeroes == 0)
BFD_ASSERT (! aux->is_sym);
 
if (aux->u.auxent.x_file.x_n.x_zeroes == 0)
{
/* The filename is a long one, point into the string table. */
if (string_table == NULL)
1813,10 → 1868,12
return NULL;
}
 
if ((bfd_size_type)(aux->u.auxent.x_file.x_n.x_offset)
>= obj_coff_strings_len (abfd))
internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) _("<corrupt>");
else
internal_ptr->u.syment._n._n_n._n_offset =
((bfd_hostptr_t)
(string_table
+ (internal_ptr + 1)->u.auxent.x_file.x_n.x_offset));
(bfd_hostptr_t) (string_table + (aux->u.auxent.x_file.x_n.x_offset));
}
else
{
1826,15 → 1883,15
if (internal_ptr->u.syment.n_numaux > 1
&& coff_data (abfd)->pe)
internal_ptr->u.syment._n._n_n._n_offset =
((bfd_hostptr_t)
(bfd_hostptr_t)
copy_name (abfd,
(internal_ptr + 1)->u.auxent.x_file.x_fname,
internal_ptr->u.syment.n_numaux * symesz));
aux->u.auxent.x_file.x_fname,
internal_ptr->u.syment.n_numaux * symesz);
else
internal_ptr->u.syment._n._n_n._n_offset =
((bfd_hostptr_t)
copy_name (abfd,
(internal_ptr + 1)->u.auxent.x_file.x_fname,
aux->u.auxent.x_file.x_fname,
(size_t) bfd_coff_filnmlen (abfd)));
}
}
1871,6 → 1928,10
if (string_table == NULL)
return NULL;
}
if (internal_ptr->u.syment._n._n_n._n_offset >= obj_coff_strings_len (abfd)
|| string_table + internal_ptr->u.syment._n._n_n._n_offset < string_table)
internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) _("<corrupt>");
else
internal_ptr->u.syment._n._n_n._n_offset =
((bfd_hostptr_t)
(string_table
1879,12 → 1940,23
else
{
/* Long name in debug section. Very similar. */
if (debug_section == NULL)
debug_section = build_debug_section (abfd);
if (debug_sec_data == NULL)
debug_sec_data = build_debug_section (abfd, & debug_sec);
if (debug_sec_data != NULL)
{
BFD_ASSERT (debug_sec != NULL);
/* PR binutils/17512: Catch out of range offsets into the debug data. */
if (internal_ptr->u.syment._n._n_n._n_offset > debug_sec->size
|| debug_sec_data + internal_ptr->u.syment._n._n_n._n_offset < debug_sec_data)
internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) _("<corrupt>");
else
internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t)
(debug_section + internal_ptr->u.syment._n._n_n._n_offset);
(debug_sec_data + internal_ptr->u.syment._n._n_n._n_offset);
}
else
internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) "";
}
}
internal_ptr += internal_ptr->u.syment.n_numaux;
}
 
1915,7 → 1987,7
if (new_symbol == NULL)
return NULL;
new_symbol->symbol.section = 0;
new_symbol->native = 0;
new_symbol->native = NULL;
new_symbol->lineno = NULL;
new_symbol->done_lineno = FALSE;
new_symbol->symbol.the_bfd = abfd;
1941,6 → 2013,7
new_symbol->native = (combined_entry_type *) bfd_zalloc (abfd, amt);
if (!new_symbol->native)
return NULL;
new_symbol->native->is_sym = TRUE;
new_symbol->symbol.section = bfd_abs_section_ptr;
new_symbol->symbol.flags = BSF_DEBUGGING;
new_symbol->lineno = NULL;
1956,81 → 2029,12
bfd_symbol_info (symbol, ret);
 
if (coffsymbol (symbol)->native != NULL
&& coffsymbol (symbol)->native->fix_value)
&& coffsymbol (symbol)->native->fix_value
&& coffsymbol (symbol)->native->is_sym)
ret->value = coffsymbol (symbol)->native->u.syment.n_value -
(bfd_hostptr_t) obj_raw_syments (abfd);
}
 
/* Return the COFF syment for a symbol. */
 
bfd_boolean
bfd_coff_get_syment (bfd *abfd,
asymbol *symbol,
struct internal_syment *psyment)
{
coff_symbol_type *csym;
 
csym = coff_symbol_from (abfd, symbol);
if (csym == NULL || csym->native == NULL)
{
bfd_set_error (bfd_error_invalid_operation);
return FALSE;
}
 
*psyment = csym->native->u.syment;
 
if (csym->native->fix_value)
psyment->n_value = psyment->n_value -
(bfd_hostptr_t) obj_raw_syments (abfd);
 
/* FIXME: We should handle fix_line here. */
 
return TRUE;
}
 
/* Return the COFF auxent for a symbol. */
 
bfd_boolean
bfd_coff_get_auxent (bfd *abfd,
asymbol *symbol,
int indx,
union internal_auxent *pauxent)
{
coff_symbol_type *csym;
combined_entry_type *ent;
 
csym = coff_symbol_from (abfd, symbol);
 
if (csym == NULL
|| csym->native == NULL
|| indx >= csym->native->u.syment.n_numaux)
{
bfd_set_error (bfd_error_invalid_operation);
return FALSE;
}
 
ent = csym->native + indx + 1;
 
*pauxent = ent->u.auxent;
 
if (ent->fix_tag)
pauxent->x_sym.x_tagndx.l =
((combined_entry_type *) pauxent->x_sym.x_tagndx.p
- obj_raw_syments (abfd));
 
if (ent->fix_end)
pauxent->x_sym.x_fcnary.x_fcn.x_endndx.l =
((combined_entry_type *) pauxent->x_sym.x_fcnary.x_fcn.x_endndx.p
- obj_raw_syments (abfd));
 
if (ent->fix_scnlen)
pauxent->x_csect.x_scnlen.l =
((combined_entry_type *) pauxent->x_csect.x_scnlen.p
- obj_raw_syments (abfd));
 
return TRUE;
}
 
/* Print out information about COFF symbol. */
 
void
2064,6 → 2068,15
 
fprintf (file, "[%3ld]", (long) (combined - root));
 
/* PR 17512: file: 079-33786-0.001:0.1. */
if (combined < obj_raw_syments (abfd)
|| combined >= obj_raw_syments (abfd) + obj_raw_syment_count (abfd))
{
fprintf (file, _("<corrupt info> %s"), symbol->name);
break;
}
 
BFD_ASSERT (combined->is_sym);
if (! combined->fix_value)
val = (bfd_vma) combined->u.syment.n_value;
else
2083,6 → 2096,7
combined_entry_type *auxp = combined + aux + 1;
long tagndx;
 
BFD_ASSERT (! auxp->is_sym);
if (auxp->fix_tag)
tagndx = auxp->u.auxent.x_sym.x_tagndx.p - root;
else
2157,8 → 2171,11
l++;
while (l->line_number)
{
if (l->line_number > 0)
{
fprintf (file, "\n%4d : ", l->line_number);
bfd_fprintf_vma (abfd, file, l->u.offset + symbol->section->vma);
}
l++;
}
}
2193,13 → 2210,13
 
bfd_boolean
coff_find_nearest_line_with_names (bfd *abfd,
const struct dwarf_debug_section *debug_sections,
asymbol **symbols,
asection *section,
asymbol **symbols,
bfd_vma offset,
const char **filename_ptr,
const char **functionname_ptr,
unsigned int *line_ptr)
unsigned int *line_ptr,
const struct dwarf_debug_section *debug_sections)
{
bfd_boolean found;
unsigned int i;
2224,13 → 2241,32
return TRUE;
 
/* Also try examining DWARF2 debugging information. */
if (_bfd_dwarf2_find_nearest_line (abfd, debug_sections,
section, symbols, offset,
if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
filename_ptr, functionname_ptr,
line_ptr, NULL, 0,
line_ptr, NULL, debug_sections, 0,
&coff_data(abfd)->dwarf2_find_line_info))
return TRUE;
 
/* If the DWARF lookup failed, but there is DWARF information available
then the problem might be that the file has been rebased. This tool
changes the VMAs of all the sections, but it does not update the DWARF
information. So try again, using a bias against the address sought. */
if (coff_data (abfd)->dwarf2_find_line_info != NULL)
{
bfd_signed_vma bias;
 
bias = _bfd_dwarf2_find_symbol_bias (symbols,
& coff_data (abfd)->dwarf2_find_line_info);
 
if (bias
&& _bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section,
offset + bias,
filename_ptr, functionname_ptr,
line_ptr, NULL, debug_sections, 0,
&coff_data(abfd)->dwarf2_find_line_info))
return TRUE;
}
 
*filename_ptr = 0;
*functionname_ptr = 0;
*line_ptr = 0;
2250,6 → 2286,7
pend = p + cof->raw_syment_count;
while (p < pend)
{
BFD_ASSERT (p->is_sym);
if (p->u.syment.n_sclass == C_FILE)
break;
p += 1 + p->u.syment.n_numaux;
2273,6 → 2310,7
p2 < pend;
p2 += 1 + p2->u.syment.n_numaux)
{
BFD_ASSERT (p2->is_sym);
if (p2->u.syment.n_scnum > 0
&& (section
== coff_section_from_bfd_index (abfd,
2284,6 → 2322,8
break;
}
}
if (p2 >= pend)
break;
 
file_addr = (bfd_vma) p2->u.syment.n_value;
/* PR 11512: Include the section address of the function name symbol. */
2348,6 → 2388,8
if (coff->native)
{
combined_entry_type *s = coff->native;
 
BFD_ASSERT (s->is_sym);
s = s + 1 + s->u.syment.n_numaux;
 
/* In XCOFF a debugging symbol can follow the
2360,6 → 2402,7
{
/* The linenumber is stored in the auxent. */
union internal_auxent *a = &((s + 1)->u.auxent);
 
line_base = a->x_sym.x_misc.x_lnsz.x_lnno;
*line_ptr = line_base;
}
2409,37 → 2452,21
 
bfd_boolean
coff_find_nearest_line (bfd *abfd,
asection *section,
asymbol **symbols,
bfd_vma offset,
const char **filename_ptr,
const char **functionname_ptr,
unsigned int *line_ptr)
{
return coff_find_nearest_line_with_names (abfd, dwarf_debug_sections,
section, symbols, offset,
filename_ptr, functionname_ptr,
line_ptr);
}
 
bfd_boolean
coff_find_nearest_line_discriminator (bfd *abfd,
asection *section,
asymbol **symbols,
bfd_vma offset,
const char **filename_ptr,
const char **functionname_ptr,
unsigned int *line_ptr,
unsigned int *discriminator)
unsigned int *discriminator_ptr)
{
*discriminator = 0;
return coff_find_nearest_line_with_names (abfd, dwarf_debug_sections,
section, symbols, offset,
if (discriminator_ptr)
*discriminator_ptr = 0;
return coff_find_nearest_line_with_names (abfd, symbols, section, offset,
filename_ptr, functionname_ptr,
line_ptr);
line_ptr, dwarf_debug_sections);
}
 
 
bfd_boolean
coff_find_inliner_info (bfd *abfd,
const char **filename_ptr,
2459,7 → 2486,7
{
size_t size;
 
if (!info->relocatable)
if (!bfd_link_relocatable (info))
size = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
else
size = bfd_coff_filhsz (abfd);
2477,7 → 2504,7
{
coff_symbol_type * csym;
 
csym = coff_symbol_from (abfd, symbol);
csym = coff_symbol_from (symbol);
if (csym == NULL)
{
bfd_set_error (bfd_error_invalid_operation);
2497,6 → 2524,7
if (native == NULL)
return FALSE;
 
native->is_sym = TRUE;
native->u.syment.n_type = T_NULL;
native->u.syment.n_sclass = symbol_class;
 
2532,16 → 2560,6
return TRUE;
}
 
struct coff_comdat_info *
bfd_coff_get_comdat_section (bfd *abfd, struct bfd_section *sec)
{
if (bfd_get_flavour (abfd) == bfd_target_coff_flavour
&& coff_section_data (abfd, sec) != NULL)
return coff_section_data (abfd, sec)->comdat;
else
return NULL;
}
 
bfd_boolean
_bfd_coff_section_already_linked (bfd *abfd,
asection *sec,
2608,3 → 2626,431
info->callbacks->einfo (_("%F%P: already_linked_table: %E\n"));
return FALSE;
}
 
/* Initialize COOKIE for input bfd ABFD. */
 
static bfd_boolean
init_reloc_cookie (struct coff_reloc_cookie *cookie,
struct bfd_link_info *info ATTRIBUTE_UNUSED,
bfd *abfd)
{
/* Sometimes the symbol table does not yet have been loaded here. */
bfd_coff_slurp_symbol_table (abfd);
 
cookie->abfd = abfd;
cookie->sym_hashes = obj_coff_sym_hashes (abfd);
 
cookie->symbols = obj_symbols (abfd);
 
return TRUE;
}
 
/* Free the memory allocated by init_reloc_cookie, if appropriate. */
 
static void
fini_reloc_cookie (struct coff_reloc_cookie *cookie ATTRIBUTE_UNUSED,
bfd *abfd ATTRIBUTE_UNUSED)
{
/* Nothing to do. */
}
 
/* Initialize the relocation information in COOKIE for input section SEC
of input bfd ABFD. */
 
static bfd_boolean
init_reloc_cookie_rels (struct coff_reloc_cookie *cookie,
struct bfd_link_info *info ATTRIBUTE_UNUSED,
bfd *abfd,
asection *sec)
{
if (sec->reloc_count == 0)
{
cookie->rels = NULL;
cookie->relend = NULL;
cookie->rel = NULL;
return TRUE;
}
 
cookie->rels = _bfd_coff_read_internal_relocs (abfd, sec, FALSE, NULL, 0, NULL);
 
if (cookie->rels == NULL)
return FALSE;
 
cookie->rel = cookie->rels;
cookie->relend = (cookie->rels + sec->reloc_count);
return TRUE;
}
 
/* Free the memory allocated by init_reloc_cookie_rels,
if appropriate. */
 
static void
fini_reloc_cookie_rels (struct coff_reloc_cookie *cookie,
asection *sec)
{
if (cookie->rels && coff_section_data (NULL, sec)->relocs != cookie->rels)
free (cookie->rels);
}
 
/* Initialize the whole of COOKIE for input section SEC. */
 
static bfd_boolean
init_reloc_cookie_for_section (struct coff_reloc_cookie *cookie,
struct bfd_link_info *info,
asection *sec)
{
if (!init_reloc_cookie (cookie, info, sec->owner))
return FALSE;
 
if (!init_reloc_cookie_rels (cookie, info, sec->owner, sec))
{
fini_reloc_cookie (cookie, sec->owner);
return FALSE;
}
return TRUE;
}
 
/* Free the memory allocated by init_reloc_cookie_for_section,
if appropriate. */
 
static void
fini_reloc_cookie_for_section (struct coff_reloc_cookie *cookie,
asection *sec)
{
fini_reloc_cookie_rels (cookie, sec);
fini_reloc_cookie (cookie, sec->owner);
}
 
static asection *
_bfd_coff_gc_mark_hook (asection *sec,
struct bfd_link_info *info ATTRIBUTE_UNUSED,
struct internal_reloc *rel ATTRIBUTE_UNUSED,
struct coff_link_hash_entry *h,
struct internal_syment *sym)
{
if (h != NULL)
{
switch (h->root.type)
{
case bfd_link_hash_defined:
case bfd_link_hash_defweak:
return h->root.u.def.section;
 
case bfd_link_hash_common:
return h->root.u.c.p->section;
 
case bfd_link_hash_undefined:
case bfd_link_hash_undefweak:
default:
break;
}
return NULL;
}
 
return coff_section_from_bfd_index (sec->owner, sym->n_scnum);
}
 
/* COOKIE->rel describes a relocation against section SEC, which is
a section we've decided to keep. Return the section that contains
the relocation symbol, or NULL if no section contains it. */
 
static asection *
_bfd_coff_gc_mark_rsec (struct bfd_link_info *info, asection *sec,
coff_gc_mark_hook_fn gc_mark_hook,
struct coff_reloc_cookie *cookie)
{
struct coff_link_hash_entry *h;
 
h = cookie->sym_hashes[cookie->rel->r_symndx];
if (h != NULL)
{
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct coff_link_hash_entry *) h->root.u.i.link;
 
return (*gc_mark_hook) (sec, info, cookie->rel, h, NULL);
}
 
return (*gc_mark_hook) (sec, info, cookie->rel, NULL,
&(cookie->symbols
+ obj_convert (sec->owner)[cookie->rel->r_symndx])->native->u.syment);
}
 
static bfd_boolean _bfd_coff_gc_mark
(struct bfd_link_info *, asection *, coff_gc_mark_hook_fn);
 
/* COOKIE->rel describes a relocation against section SEC, which is
a section we've decided to keep. Mark the section that contains
the relocation symbol. */
 
static bfd_boolean
_bfd_coff_gc_mark_reloc (struct bfd_link_info *info,
asection *sec,
coff_gc_mark_hook_fn gc_mark_hook,
struct coff_reloc_cookie *cookie)
{
asection *rsec;
 
rsec = _bfd_coff_gc_mark_rsec (info, sec, gc_mark_hook, cookie);
if (rsec && !rsec->gc_mark)
{
if (bfd_get_flavour (rsec->owner) != bfd_target_coff_flavour)
rsec->gc_mark = 1;
else if (!_bfd_coff_gc_mark (info, rsec, gc_mark_hook))
return FALSE;
}
return TRUE;
}
 
/* The mark phase of garbage collection. For a given section, mark
it and any sections in this section's group, and all the sections
which define symbols to which it refers. */
 
static bfd_boolean
_bfd_coff_gc_mark (struct bfd_link_info *info,
asection *sec,
coff_gc_mark_hook_fn gc_mark_hook)
{
bfd_boolean ret = TRUE;
 
sec->gc_mark = 1;
 
/* Look through the section relocs. */
if ((sec->flags & SEC_RELOC) != 0
&& sec->reloc_count > 0)
{
struct coff_reloc_cookie cookie;
 
if (!init_reloc_cookie_for_section (&cookie, info, sec))
ret = FALSE;
else
{
for (; cookie.rel < cookie.relend; cookie.rel++)
{
if (!_bfd_coff_gc_mark_reloc (info, sec, gc_mark_hook, &cookie))
{
ret = FALSE;
break;
}
}
fini_reloc_cookie_for_section (&cookie, sec);
}
}
 
return ret;
}
 
static bfd_boolean
_bfd_coff_gc_mark_extra_sections (struct bfd_link_info *info,
coff_gc_mark_hook_fn mark_hook ATTRIBUTE_UNUSED)
{
bfd *ibfd;
 
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
{
asection *isec;
bfd_boolean some_kept;
 
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
continue;
 
/* Ensure all linker created sections are kept, and see whether
any other section is already marked. */
some_kept = FALSE;
for (isec = ibfd->sections; isec != NULL; isec = isec->next)
{
if ((isec->flags & SEC_LINKER_CREATED) != 0)
isec->gc_mark = 1;
else if (isec->gc_mark)
some_kept = TRUE;
}
 
/* If no section in this file will be kept, then we can
toss out debug sections. */
if (!some_kept)
continue;
 
/* Keep debug and special sections like .comment when they are
not part of a group, or when we have single-member groups. */
for (isec = ibfd->sections; isec != NULL; isec = isec->next)
if ((isec->flags & SEC_DEBUGGING) != 0
|| (isec->flags & (SEC_ALLOC | SEC_LOAD | SEC_RELOC)) == 0)
isec->gc_mark = 1;
}
return TRUE;
}
 
/* Sweep symbols in swept sections. Called via coff_link_hash_traverse. */
 
static bfd_boolean
coff_gc_sweep_symbol (struct coff_link_hash_entry *h,
void *data ATTRIBUTE_UNUSED)
{
if (h->root.type == bfd_link_hash_warning)
h = (struct coff_link_hash_entry *) h->root.u.i.link;
 
if ((h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
&& !h->root.u.def.section->gc_mark
&& !(h->root.u.def.section->owner->flags & DYNAMIC))
{
/* Do our best to hide the symbol. */
h->root.u.def.section = bfd_und_section_ptr;
h->symbol_class = C_HIDDEN;
}
 
return TRUE;
}
 
/* The sweep phase of garbage collection. Remove all garbage sections. */
 
typedef bfd_boolean (*gc_sweep_hook_fn)
(bfd *, struct bfd_link_info *, asection *, const struct internal_reloc *);
 
static bfd_boolean
coff_gc_sweep (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
{
bfd *sub;
 
for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
{
asection *o;
 
if (bfd_get_flavour (sub) != bfd_target_coff_flavour)
continue;
 
for (o = sub->sections; o != NULL; o = o->next)
{
/* Keep debug and special sections. */
if ((o->flags & (SEC_DEBUGGING | SEC_LINKER_CREATED)) != 0
|| (o->flags & (SEC_ALLOC | SEC_LOAD | SEC_RELOC)) == 0)
o->gc_mark = 1;
else if (CONST_STRNEQ (o->name, ".idata")
|| CONST_STRNEQ (o->name, ".pdata")
|| CONST_STRNEQ (o->name, ".xdata")
|| CONST_STRNEQ (o->name, ".rsrc"))
o->gc_mark = 1;
 
if (o->gc_mark)
continue;
 
/* Skip sweeping sections already excluded. */
if (o->flags & SEC_EXCLUDE)
continue;
 
/* Since this is early in the link process, it is simple
to remove a section from the output. */
o->flags |= SEC_EXCLUDE;
 
if (info->print_gc_sections && o->size != 0)
_bfd_error_handler (_("Removing unused section '%s' in file '%B'"), sub, o->name);
 
#if 0
/* But we also have to update some of the relocation
info we collected before. */
if (gc_sweep_hook
&& (o->flags & SEC_RELOC) != 0
&& o->reloc_count > 0
&& !bfd_is_abs_section (o->output_section))
{
struct internal_reloc *internal_relocs;
bfd_boolean r;
 
internal_relocs
= _bfd_coff_link_read_relocs (o->owner, o, NULL, NULL,
info->keep_memory);
if (internal_relocs == NULL)
return FALSE;
 
r = (*gc_sweep_hook) (o->owner, info, o, internal_relocs);
 
if (coff_section_data (o)->relocs != internal_relocs)
free (internal_relocs);
 
if (!r)
return FALSE;
}
#endif
}
}
 
/* Remove the symbols that were in the swept sections from the dynamic
symbol table. */
coff_link_hash_traverse (coff_hash_table (info), coff_gc_sweep_symbol,
NULL);
 
return TRUE;
}
 
/* Keep all sections containing symbols undefined on the command-line,
and the section containing the entry symbol. */
 
static void
_bfd_coff_gc_keep (struct bfd_link_info *info)
{
struct bfd_sym_chain *sym;
 
for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
{
struct coff_link_hash_entry *h;
 
h = coff_link_hash_lookup (coff_hash_table (info), sym->name,
FALSE, FALSE, FALSE);
 
if (h != NULL
&& (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
&& !bfd_is_abs_section (h->root.u.def.section))
h->root.u.def.section->flags |= SEC_KEEP;
}
}
 
/* Do mark and sweep of unused sections. */
 
bfd_boolean
bfd_coff_gc_sections (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
{
bfd *sub;
 
/* FIXME: Should we implement this? */
#if 0
const bfd_coff_backend_data *bed = coff_backend_info (abfd);
 
if (!bed->can_gc_sections
|| !is_coff_hash_table (info->hash))
{
(*_bfd_error_handler)(_("Warning: gc-sections option ignored"));
return TRUE;
}
#endif
 
_bfd_coff_gc_keep (info);
 
/* Grovel through relocs to find out who stays ... */
for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
{
asection *o;
 
if (bfd_get_flavour (sub) != bfd_target_coff_flavour)
continue;
 
for (o = sub->sections; o != NULL; o = o->next)
{
if (((o->flags & (SEC_EXCLUDE | SEC_KEEP)) == SEC_KEEP
|| CONST_STRNEQ (o->name, ".vectors")
|| CONST_STRNEQ (o->name, ".ctors")
|| CONST_STRNEQ (o->name, ".dtors"))
&& !o->gc_mark)
{
if (!_bfd_coff_gc_mark (info, o, _bfd_coff_gc_mark_hook))
return FALSE;
}
}
}
 
/* Allow the backend to mark additional target specific sections. */
_bfd_coff_gc_mark_extra_sections (info, _bfd_coff_gc_mark_hook);
 
/* ... and mark SEC_EXCLUDE for those that go. */
return coff_gc_sweep (abfd, info);
}