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authorIan Lance Taylor <ian@airs.com>1996-03-22 16:46:34 +0000
committerIan Lance Taylor <ian@airs.com>1996-03-22 16:46:34 +0000
commite4d27380de003126fd8834ebd9fd55277156cd83 (patch)
tree3acd02bb218f55ed144f90bbc2844db513dea228 /bfd/ieee.c
parentc7a89bde9b712899795468ba575bd374f7a28c04 (diff)
downloadgdb-e4d27380de003126fd8834ebd9fd55277156cd83.zip
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Fri Mar 22 11:33:44 1996 Martin Anantharaman <martin@goofy.imech.uni-duisburg.de>
* ieee.c: Changed #ifdef KEEPMINUSPCININST to #if KEEPMINUSPCININST. (ieee_generic_stat_arch_elt): Restructured to prevent ieee_object_p from being called repeatedly.
Diffstat (limited to 'bfd/ieee.c')
-rw-r--r--bfd/ieee.c341
1 files changed, 259 insertions, 82 deletions
diff --git a/bfd/ieee.c b/bfd/ieee.c
index 0defd3d..5f086bc 100644
--- a/bfd/ieee.c
+++ b/bfd/ieee.c
@@ -46,8 +46,10 @@ static boolean ieee_write_external_part PARAMS ((bfd *));
static boolean ieee_write_data_part PARAMS ((bfd *));
static boolean ieee_write_debug_part PARAMS ((bfd *));
static boolean ieee_write_me_part PARAMS ((bfd *));
+static boolean ieee_write_processor PARAMS ((bfd *));
static boolean ieee_slurp_debug PARAMS ((bfd *));
+static boolean ieee_slurp_section_data PARAMS ((bfd *));
/* Functions for writing to ieee files in the strange way that the
standard requires. */
@@ -258,12 +260,6 @@ ieee_write_expression (abfd, value, symbol, pcrel, index)
{
/* Ref to defined symbol - */
- if (! ieee_write_byte (abfd, ieee_variable_R_enum)
- || ! ieee_write_byte (abfd,
- (bfd_byte) (symbol->section->index
- + IEEE_SECTION_NUMBER_BASE)))
- return false;
- term_count++;
if (symbol->flags & BSF_GLOBAL)
{
if (! ieee_write_byte (abfd, ieee_variable_I_enum)
@@ -275,9 +271,18 @@ ieee_write_expression (abfd, value, symbol, pcrel, index)
{
/* This is a reference to a defined local symbol. We can
easily do a local as a section+offset. */
- if (! ieee_write_int (abfd, symbol->value))
+ if (! ieee_write_byte (abfd, ieee_variable_R_enum)
+ || ! ieee_write_byte (abfd,
+ (bfd_byte) (symbol->section->index
+ + IEEE_SECTION_NUMBER_BASE)))
return false;
term_count++;
+ if (symbol->value != 0)
+ {
+ if (! ieee_write_int (abfd, symbol->value))
+ return false;
+ term_count++;
+ }
}
else
{
@@ -300,6 +305,13 @@ ieee_write_expression (abfd, value, symbol, pcrel, index)
return false;
}
+ /* Handle the degenerate case of a 0 address. */
+ if (term_count == 0)
+ {
+ if (! ieee_write_int (abfd, 0))
+ return false;
+ }
+
while (term_count > 1)
{
if (! ieee_write_byte (abfd, ieee_function_plus_enum))
@@ -396,6 +408,18 @@ typedef struct
} ieee_value_type;
+#if KEEPMINUSPCININST
+
+#define SRC_MASK(arg) arg
+#define PCREL_OFFSET false
+
+#else
+
+#define SRC_MASK(arg) 0
+#define PCREL_OFFSET true
+
+#endif
+
static reloc_howto_type abs32_howto =
HOWTO (1,
0,
@@ -452,9 +476,9 @@ static reloc_howto_type rel32_howto =
0,
"rel32",
true,
+ SRC_MASK (0xffffffff),
0xffffffff,
- 0xffffffff,
- false);
+ PCREL_OFFSET);
static reloc_howto_type rel16_howto =
HOWTO (1,
@@ -467,9 +491,9 @@ static reloc_howto_type rel16_howto =
0,
"rel16",
true,
+ SRC_MASK (0x0000ffff),
0x0000ffff,
- 0x0000ffff,
- false);
+ PCREL_OFFSET);
static reloc_howto_type rel8_howto =
HOWTO (1,
@@ -482,9 +506,9 @@ static reloc_howto_type rel8_howto =
0,
"rel8",
true,
+ SRC_MASK (0x000000ff),
0x000000ff,
- 0x000000ff,
- false);
+ PCREL_OFFSET);
static ieee_symbol_index_type NOSYMBOL = {0, 0};
@@ -523,9 +547,7 @@ parse_expression (ieee, value, symbol, pcrel, extra, section)
next_byte (&(ieee->h));
*pcrel = true;
section_n = must_parse_int (&(ieee->h));
- PUSH (NOSYMBOL, bfd_abs_section_ptr,
- TOS.value = ieee->section_table[section_n]->vma +
- ieee_per_section (ieee->section_table[section_n])->pc);
+ PUSH (NOSYMBOL, bfd_abs_section_ptr, 0);
break;
}
case ieee_variable_L_enum:
@@ -547,6 +569,16 @@ parse_expression (ieee, value, symbol, pcrel, extra, section)
ieee->section_table[must_parse_int (&(ieee->h))]->_raw_size);
break;
case ieee_variable_I_enum:
+ /* Push the address of variable n */
+ {
+ ieee_symbol_index_type sy;
+ next_byte (&(ieee->h));
+ sy.index = (int) must_parse_int (&(ieee->h));
+ sy.letter = 'I';
+
+ PUSH (sy, bfd_abs_section_ptr, 0);
+ }
+ break;
case ieee_variable_X_enum:
/* Push the address of external variable n */
{
@@ -567,7 +599,7 @@ parse_expression (ieee, value, symbol, pcrel, extra, section)
POP (sy, section1, value1);
POP (sy, section_dummy, value2);
- PUSH (sy, section1 ? section1 : section_dummy, value1 - value2);
+ PUSH (sy, section1 ? section1 : section_dummy, value2 - value1);
}
break;
case ieee_function_plus_enum:
@@ -674,6 +706,7 @@ get_symbol (abfd,
*max_index = new_index;
}
last_type = this_type;
+ new_symbol->symbol.section = bfd_abs_section_ptr;
return new_symbol;
}
return last_symbol;
@@ -705,7 +738,7 @@ ieee_slurp_external_symbols (abfd)
symbol = get_symbol (abfd, ieee, symbol, &symbol_count,
&prev_symbols_ptr,
- &ieee->external_symbol_max_index, 'D');
+ &ieee->external_symbol_max_index, 'I');
if (symbol == NULL)
return false;
@@ -736,23 +769,33 @@ ieee_slurp_external_symbols (abfd)
unsigned int symbol_type_index;
unsigned int symbol_attribute_def;
bfd_vma value;
- next_byte (&(ieee->h)); /* Skip prefix */
- next_byte (&(ieee->h));
- symbol_name_index = must_parse_int (&(ieee->h));
- symbol_type_index = must_parse_int (&(ieee->h));
- symbol_attribute_def = must_parse_int (&(ieee->h));
- switch (symbol_attribute_def)
+ switch (read_2bytes (ieee))
{
- case 63:
- /* Module misc; followed by two fields which describe the
- current module block. The first fired is the type id
- number, the second is the number of asn records
- associated with the directive */
+ case ieee_attribute_record_enum:
+ symbol_name_index = must_parse_int (&(ieee->h));
+ symbol_type_index = must_parse_int (&(ieee->h));
+ symbol_attribute_def = must_parse_int (&(ieee->h));
+ switch (symbol_attribute_def)
+ {
+ case 8:
+ case 19:
+ parse_int (&ieee->h, &value);
+ break;
+ default:
+ (*_bfd_error_handler)
+ ("%s: unimplemented ATI record %u for symbol %u",
+ bfd_get_filename (abfd), symbol_attribute_def,
+ symbol_name_index);
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ break;
+ }
+ break;
+ case ieee_external_reference_info_record_enum:
+ /* Skip over ATX record. */
+ parse_int (&(ieee->h), &value);
parse_int (&(ieee->h), &value);
parse_int (&(ieee->h), &value);
- break;
-
- default:
parse_int (&(ieee->h), &value);
break;
}
@@ -1000,12 +1043,16 @@ ieee_slurp_sections (abfd)
section = get_section_entry (abfd, ieee, section_index);
section_type[0] = this_byte_and_next (&(ieee->h));
+
+ /* Set minimal section attributes. Attributes are
+ extended later, based on section contents. */
+
switch (section_type[0])
{
case 0xC1:
/* Normal attributes for absolute sections */
section_type[1] = this_byte (&(ieee->h));
- section->flags = SEC_LOAD | SEC_ALLOC | SEC_HAS_CONTENTS;
+ section->flags = SEC_ALLOC;
switch (section_type[1])
{
case 0xD3: /* AS Absolute section attributes */
@@ -1016,17 +1063,17 @@ ieee_slurp_sections (abfd)
case 0xD0:
/* Normal code */
next_byte (&(ieee->h));
- section->flags |= SEC_LOAD | SEC_CODE;
+ section->flags |= SEC_CODE;
break;
case 0xC4:
- next_byte (&(ieee->h));
- section->flags |= SEC_LOAD | SEC_DATA;
/* Normal data */
+ next_byte (&(ieee->h));
+ section->flags |= SEC_DATA;
break;
case 0xD2:
next_byte (&(ieee->h));
/* Normal rom data */
- section->flags |= SEC_LOAD | SEC_ROM | SEC_DATA;
+ section->flags |= SEC_ROM | SEC_DATA;
break;
default:
break;
@@ -1035,20 +1082,20 @@ ieee_slurp_sections (abfd)
break;
case 0xC3: /* Named relocatable sections (type C) */
section_type[1] = this_byte (&(ieee->h));
- section->flags = SEC_LOAD | SEC_ALLOC | SEC_HAS_CONTENTS;
+ section->flags = SEC_ALLOC;
switch (section_type[1])
{
case 0xD0: /* Normal code (CP) */
next_byte (&(ieee->h));
- section->flags |= SEC_LOAD | SEC_CODE;
+ section->flags |= SEC_CODE;
break;
case 0xC4: /* Normal data (CD) */
next_byte (&(ieee->h));
- section->flags |= SEC_LOAD | SEC_DATA;
+ section->flags |= SEC_DATA;
break;
case 0xD2: /* Normal rom data (CR) */
next_byte (&(ieee->h));
- section->flags |= SEC_LOAD | SEC_ROM | SEC_DATA;
+ section->flags |= SEC_ROM | SEC_DATA;
break;
default:
break;
@@ -1380,27 +1427,37 @@ ieee_object_p (abfd)
}
}
- abfd->flags = HAS_SYMS;
-/* By now we know that this is a real IEEE file, we're going to read
- the whole thing into memory so that we can run up and down it
- quickly. We can work out how big the file is from the trailer
- record */
- IEEE_DATA (abfd)->h.first_byte = (unsigned char *) bfd_alloc (ieee->h.abfd, ieee->w.r.me_record
- + 50);
+ if (ieee->w.r.external_part != 0)
+ abfd->flags = HAS_SYMS;
+
+ /* By now we know that this is a real IEEE file, we're going to read
+ the whole thing into memory so that we can run up and down it
+ quickly. We can work out how big the file is from the trailer
+ record */
+
+ IEEE_DATA (abfd)->h.first_byte =
+ (unsigned char *) bfd_alloc (ieee->h.abfd, ieee->w.r.me_record + 1);
if (!IEEE_DATA (abfd)->h.first_byte)
goto fail;
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
goto fail;
/* FIXME: Check return value. I'm not sure whether it needs to read
the entire buffer or not. */
- bfd_read ((PTR) (IEEE_DATA (abfd)->h.first_byte), 1, ieee->w.r.me_record + 50, abfd);
+ bfd_read ((PTR) (IEEE_DATA (abfd)->h.first_byte), 1,
+ ieee->w.r.me_record + 1, abfd);
ieee_slurp_sections (abfd);
if (! ieee_slurp_debug (abfd))
goto fail;
+ /* Parse section data to activate file and section flags implied by
+ section contents. */
+
+ if (! ieee_slurp_section_data (abfd))
+ goto fail;
+
return abfd->xvec;
got_wrong_format:
bfd_set_error (bfd_error_wrong_format);
@@ -1470,11 +1527,12 @@ ieee_print_symbol (ignore_abfd, afile, symbol, how)
}
static boolean
-do_one (ieee, current_map, location_ptr, s)
+do_one (ieee, current_map, location_ptr, s, iterations)
ieee_data_type *ieee;
ieee_per_section_type *current_map;
unsigned char *location_ptr;
asection *s;
+ int iterations;
{
switch (this_byte (&(ieee->h)))
{
@@ -1527,6 +1585,8 @@ do_one (ieee, current_map, location_ptr, s)
&r->symbol,
&pcrel, &extra, &section);
r->relent.address = current_map->pc;
+ s->flags |= SEC_RELOC;
+ s->owner->flags |= HAS_RELOC;
s->reloc_count++;
if (r->relent.sym_ptr_ptr == 0)
{
@@ -1631,7 +1691,7 @@ do_one (ieee, current_map, location_ptr, s)
default:
BFD_FAIL ();
- break;
+ return false;
}
}
break;
@@ -1653,6 +1713,11 @@ do_one (ieee, current_map, location_ptr, s)
}
}
}
+
+ /* Prevent more than the first load-item of an LR record
+ from being repeated (MRI convention). */
+ if (iterations != 1)
+ loop = false;
}
}
}
@@ -1703,6 +1768,7 @@ ieee_slurp_section_data (abfd)
next_byte (&(ieee->h));
section_number = must_parse_int (&(ieee->h));
s = ieee->section_table[section_number];
+ s->flags |= SEC_LOAD | SEC_HAS_CONTENTS;
current_map = (ieee_per_section_type *) s->used_by_bfd;
location_ptr = current_map->data - s->vma;
/* The document I have says that Microtec's compilers reset */
@@ -1737,7 +1803,7 @@ ieee_slurp_section_data (abfd)
return true;
default:
BFD_FAIL ();
- return true;
+ return false;
}
break;
case ieee_repeat_data_enum:
@@ -1770,7 +1836,8 @@ ieee_slurp_section_data (abfd)
while (iterations != 0)
{
ieee->h.input_p = start;
- if (!do_one (ieee, current_map, location_ptr, s))
+ if (!do_one (ieee, current_map, location_ptr, s,
+ iterations))
return false;
iterations--;
}
@@ -1780,7 +1847,7 @@ ieee_slurp_section_data (abfd)
case ieee_load_constant_bytes_enum:
case ieee_load_with_relocation_enum:
{
- if (!do_one (ieee, current_map, location_ptr, s))
+ if (!do_one (ieee, current_map, location_ptr, s, 1))
return false;
}
}
@@ -1849,6 +1916,10 @@ ieee_canonicalize_reloc (abfd, section, relptr, symbols)
/* Work out which symbol to attach it this reloc to */
switch (src->symbol.letter)
{
+ case 'I':
+ src->relent.sym_ptr_ptr =
+ symbols + src->symbol.index + ieee->external_symbol_base_offset;
+ break;
case 'X':
src->relent.sym_ptr_ptr =
symbols + src->symbol.index + ieee->external_reference_base_offset;
@@ -1978,6 +2049,8 @@ do_with_relocs (abfd, s)
bfd *abfd;
asection *s;
{
+ unsigned int number_of_maus_in_address =
+ bfd_arch_bits_per_address (abfd) / bfd_arch_bits_per_byte (abfd);
unsigned int relocs_to_go = s->reloc_count;
bfd_byte *stream = ieee_per_section (s)->data;
arelent **p = s->orelocation;
@@ -1994,9 +2067,18 @@ do_with_relocs (abfd, s)
(bfd_byte) (s->index + IEEE_SECTION_NUMBER_BASE))
|| ! ieee_write_2bytes (abfd, ieee_set_current_pc_enum)
|| ! ieee_write_byte (abfd,
- (bfd_byte) (s->index + IEEE_SECTION_NUMBER_BASE))
- || ! ieee_write_expression (abfd, 0, s->symbol, 0, 0))
+ (bfd_byte) (s->index + IEEE_SECTION_NUMBER_BASE)))
return false;
+ if ((abfd->flags & EXEC_P) != 0 && relocs_to_go == 0)
+ {
+ if (! ieee_write_int (abfd, s->vma))
+ return false;
+ }
+ else
+ {
+ if (! ieee_write_expression (abfd, 0, s->symbol, 0, 0))
+ return false;
+ }
if (relocs_to_go == 0)
{
@@ -2006,7 +2088,7 @@ do_with_relocs (abfd, s)
while (current_byte_index < s->_raw_size)
{
bfd_size_type run;
- unsigned int MAXRUN = 32;
+ unsigned int MAXRUN = 127;
run = MAXRUN;
if (run > s->_raw_size - current_byte_index)
{
@@ -2050,10 +2132,12 @@ do_with_relocs (abfd, s)
while (current_byte_index < s->_raw_size)
{
bfd_size_type run;
- unsigned int MAXRUN = 32;
+ unsigned int MAXRUN = 127;
if (relocs_to_go)
{
run = (*p)->address - current_byte_index;
+ if (run > MAXRUN)
+ run = MAXRUN;
}
else
{
@@ -2084,7 +2168,7 @@ do_with_relocs (abfd, s)
&& (*p) && (*p)->address == current_byte_index)
{
arelent *r = *p;
- bfd_vma ov;
+ bfd_signed_vma ov;
#if 0
if (r->howto->pc_relative)
@@ -2097,24 +2181,32 @@ do_with_relocs (abfd, s)
{
case 2:
- ov = bfd_get_32 (abfd,
- stream + current_byte_index);
+ ov = bfd_get_signed_32 (abfd,
+ stream + current_byte_index);
current_byte_index += 4;
break;
case 1:
- ov = bfd_get_16 (abfd,
- stream + current_byte_index);
+ ov = bfd_get_signed_16 (abfd,
+ stream + current_byte_index);
current_byte_index += 2;
break;
case 0:
- ov = bfd_get_8 (abfd,
- stream + current_byte_index);
+ ov = bfd_get_signed_8 (abfd,
+ stream + current_byte_index);
current_byte_index++;
break;
default:
ov = 0;
BFD_FAIL ();
+ return false;
}
+
+ ov &= r->howto->src_mask;
+
+ if (r->howto->pc_relative
+ && ! r->howto->pcrel_offset)
+ ov += r->address;
+
if (! ieee_write_byte (abfd,
ieee_function_either_open_b_enum))
return false;
@@ -2138,10 +2230,11 @@ do_with_relocs (abfd, s)
return false;
}
- if (1 || r->howto->size != 2)
+ if (number_of_maus_in_address
+ != bfd_get_reloc_size (r->howto))
{
- if (! ieee_write_byte (abfd, ieee_comma)
- || ! ieee_write_int (abfd, 1 << r->howto->size))
+ if (! ieee_write_int (abfd,
+ bfd_get_reloc_size (r->howto)))
return false;
}
if (! ieee_write_byte (abfd,
@@ -2981,10 +3074,13 @@ ieee_write_data_part (abfd)
ieee->w.r.data_part = bfd_tell (abfd);
for (s = abfd->sections; s != (asection *) NULL; s = s->next)
{
- if ((s->flags & SEC_DEBUGGING) != 0)
+ /* Skip sections that have no loadable contents (.bss,
+ debugging, etc.) */
+ if ((s->flags & SEC_LOAD) == 0)
continue;
+
/* Sort the reloc records so we can insert them in the correct
- places */
+ places */
if (s->reloc_count != 0)
{
if (! do_with_relocs (abfd, s))
@@ -3100,8 +3196,7 @@ ieee_write_external_part (abfd)
|| ! ieee_write_byte (abfd,
ieee_weak_external_reference_enum)
|| ! ieee_write_int (abfd, reference_index)
- || ! ieee_write_int (abfd, p->value)
- || ! ieee_write_int (abfd, BFD_FORT_COMM_DEFAULT_VALUE))
+ || ! ieee_write_int (abfd, p->value))
return false;
p->value = reference_index;
reference_index++;
@@ -3201,22 +3296,91 @@ ieee_write_me_part (abfd)
ieee->w.r.trailer_part = bfd_tell (abfd);
if (abfd->start_address)
{
- ieee->w.r.me_record = bfd_tell (abfd);
if (! ieee_write_2bytes (abfd, ieee_value_starting_address_enum)
|| ! ieee_write_byte (abfd, ieee_function_either_open_b_enum)
|| ! ieee_write_int (abfd, abfd->start_address)
|| ! ieee_write_byte (abfd, ieee_function_either_close_b_enum))
return false;
}
- else
- {
- ieee->w.r.me_record = bfd_tell (abfd);
- }
+ ieee->w.r.me_record = bfd_tell (abfd);
if (! ieee_write_byte (abfd, ieee_module_end_enum))
return false;
return true;
}
+/* Write out the IEEE processor ID. */
+
+static boolean
+ieee_write_processor (abfd)
+ bfd *abfd;
+{
+ const bfd_arch_info_type *arch;
+
+ arch = bfd_get_arch_info (abfd);
+ switch (arch->arch)
+ {
+ default:
+ if (! ieee_write_id (abfd, bfd_printable_name (abfd)))
+ return false;
+ break;
+
+ case bfd_arch_a29k:
+ if (! ieee_write_id (abfd, "29000"))
+ return false;
+ break;
+
+ case bfd_arch_h8300:
+ if (! ieee_write_id (abfd, "H8/300"))
+ return false;
+ break;
+
+ case bfd_arch_h8500:
+ if (! ieee_write_id (abfd, "H8/500"))
+ return false;
+ break;
+
+ case bfd_arch_i960:
+ switch (arch->mach)
+ {
+ default:
+ case bfd_mach_i960_core:
+ case bfd_mach_i960_ka_sa:
+ if (! ieee_write_id (abfd, "80960KA"))
+ return false;
+ break;
+
+ case bfd_mach_i960_kb_sb:
+ if (! ieee_write_id (abfd, "80960KB"))
+ return false;
+ break;
+
+ case bfd_mach_i960_ca:
+ if (! ieee_write_id (abfd, "80960CA"))
+ return false;
+ break;
+
+ case bfd_mach_i960_mc:
+ case bfd_mach_i960_xa:
+ if (! ieee_write_id (abfd, "80960MC"))
+ return false;
+ break;
+ }
+ break;
+
+ case bfd_arch_m68k:
+ {
+ char ab[20];
+
+ sprintf (ab, "%lu", arch->mach);
+ if (! ieee_write_id (abfd, ab))
+ return false;
+ }
+ break;
+ }
+
+ return true;
+}
+
boolean
ieee_write_object_contents (abfd)
bfd *abfd;
@@ -3228,8 +3392,9 @@ ieee_write_object_contents (abfd)
/* Fast forward over the header area */
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
return false;
+
if (! ieee_write_byte (abfd, ieee_module_beginning_enum)
- || ! ieee_write_id (abfd, bfd_printable_name (abfd))
+ || ! ieee_write_processor (abfd)
|| ! ieee_write_id (abfd, abfd->filename))
return false;
@@ -3392,17 +3557,28 @@ ieee_generic_stat_arch_elt (abfd, buf)
struct stat *buf;
{
ieee_ar_data_type *ar = abfd->my_archive->tdata.ieee_ar_data;
+ ieee_data_type *ieee;
+
if (ar == (ieee_ar_data_type *) NULL)
{
bfd_set_error (bfd_error_invalid_operation);
return -1;
}
- else
+
+ if (IEEE_DATA (abfd) == NULL)
{
- buf->st_size = 0x1;
- buf->st_mode = 0666;
- return !ieee_object_p (abfd);
+ if (ieee_object_p (abfd) == NULL)
+ {
+ bfd_set_error (bfd_error_wrong_format);
+ return -1;
+ }
}
+
+ ieee = IEEE_DATA (abfd);
+
+ buf->st_size = ieee->w.r.me_record + 1;
+ buf->st_mode = 0644;
+ return 0;
}
static int
@@ -3493,6 +3669,7 @@ ieee_bfd_debug_info_accumulate (abfd, section)
bfd_true)
#define ieee_read_ar_hdr bfd_nullvoidptr
#define ieee_update_armap_timestamp bfd_true
+#define ieee_get_elt_at_index _bfd_generic_get_elt_at_index
#define ieee_bfd_is_local_label bfd_generic_is_local_label
#define ieee_get_lineno _bfd_nosymbols_get_lineno