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gnu / binutils-gdb / e6009837c579d273715da2a10e47ca2ff1073d8f / . / bfd / vms.c
blob: 5bb60af9708e69deb946115022265b0b160a5836 [file] [log] [blame]
/* vms.c -- BFD back-end for VAX (openVMS/VAX) and
EVAX (openVMS/Alpha) files.
Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
2006, 2007, 2008, 2009 Free Software Foundation, Inc.
Main file.
Written by Klaus K"ampf (kkaempf@rmi.de)
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#ifdef VMS
#include <rms.h>
#include <starlet.h>
#define RME$C_SETRFM 0x00000001
#include <unistd.h>
#endif
#include "sysdep.h"
#include "bfd.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "vms.h"
static bfd_boolean vms_initialize (bfd *);
static bfd_boolean fill_section_ptr (struct bfd_hash_entry *, PTR);
static bfd_boolean vms_fixup_sections (bfd *);
static bfd_boolean copy_symbols (struct bfd_hash_entry *, PTR);
static bfd_reloc_status_type reloc_nil (bfd *, arelent *, asymbol *, PTR,
asection *, bfd *, char **);
static int vms_slurp_module (bfd *abfd);
static int vms_slurp_image (bfd *abfd);
static const struct bfd_target *vms_object_p (bfd *abfd);
static const struct bfd_target *vms_archive_p (bfd *abfd);
static bfd_boolean vms_mkobject (bfd *abfd);
static bfd_boolean vms_write_object_contents (bfd *abfd);
static void free_reloc_stream (bfd *abfd, asection *section, void *data);
static bfd_boolean vms_close_and_cleanup (bfd *abfd);
static bfd_boolean vms_bfd_free_cached_info (bfd *abfd);
static bfd_boolean vms_new_section_hook (bfd *abfd, asection *section);
static bfd_boolean vms_get_section_contents
(bfd *abfd, asection *section, PTR x1, file_ptr x2, bfd_size_type x3);
static bfd_boolean vms_get_section_contents_in_window
(bfd *abfd, asection *section, bfd_window *w, file_ptr offset,
bfd_size_type count);
static bfd_boolean vms_bfd_copy_private_bfd_data (bfd *src, bfd *dest);
static bfd_boolean vms_bfd_copy_private_section_data
(bfd *srcbfd, asection *srcsec, bfd *dstbfd, asection *dstsec);
static bfd_boolean vms_bfd_copy_private_symbol_data
(bfd *ibfd, asymbol *isym, bfd *obfd, asymbol *osym);
static bfd_boolean vms_bfd_print_private_bfd_data (bfd *abfd, void *file);
static char *vms_core_file_failing_command (bfd *abfd);
static int vms_core_file_failing_signal (bfd *abfd);
static bfd_boolean vms_core_file_matches_executable_p (bfd *abfd, bfd *bbfd);
static bfd_boolean vms_slurp_armap (bfd *abfd);
static bfd_boolean vms_slurp_extended_name_table (bfd *abfd);
static bfd_boolean vms_construct_extended_name_table
(bfd *abfd, char **tabloc, bfd_size_type *tablen, const char **name);
static void vms_truncate_arname (bfd *abfd, const char *pathname, char *arhdr);
static bfd_boolean vms_write_armap
(bfd *arch, unsigned int elen, struct orl *map, unsigned int cnt, int idx);
static PTR vms_read_ar_hdr (bfd *abfd);
static bfd *vms_get_elt_at_index (bfd *abfd, symindex index);
static bfd *vms_openr_next_archived_file (bfd *arch, bfd *prev);
static bfd_boolean vms_update_armap_timestamp (bfd *abfd);
static int vms_generic_stat_arch_elt (bfd *, struct stat *);
static long vms_get_symtab_upper_bound (bfd *abfd);
static long vms_canonicalize_symtab (bfd *abfd, asymbol **symbols);
static void vms_print_symbol (bfd *abfd, PTR file, asymbol *symbol,
bfd_print_symbol_type how);
static void vms_get_symbol_info (bfd *abfd, asymbol *symbol, symbol_info *ret);
static bfd_boolean vms_bfd_is_local_label_name (bfd *abfd, const char *);
static alent *vms_get_lineno (bfd *abfd, asymbol *symbol);
static bfd_boolean vms_find_nearest_line
(bfd *abfd, asection *section, asymbol **symbols, bfd_vma offset,
const char **file, const char **func, unsigned int *line);
static asymbol *vms_bfd_make_debug_symbol (bfd *abfd, void *ptr,
unsigned long size);
static long vms_read_minisymbols (bfd *abfd, bfd_boolean dynamic,
PTR *minisymsp, unsigned int *sizep);
static asymbol *vms_minisymbol_to_symbol
(bfd *abfd, bfd_boolean dynamic, const PTR minisym, asymbol *sym);
static void alloc_reloc_stream (bfd *abfd, asection *section,
void *alloc_error);
static bfd_boolean vms_slurp_reloc_table (bfd *abfd, asection *section,
asymbol **symbols);
static long vms_get_reloc_upper_bound (bfd *abfd, asection *sect);
static long vms_canonicalize_reloc (bfd *abfd, asection *srcsec,
arelent **location, asymbol **symbols);
static const struct reloc_howto_struct *vms_bfd_reloc_type_lookup
(bfd *abfd, bfd_reloc_code_real_type code);
static bfd_boolean vms_set_arch_mach
(bfd *abfd, enum bfd_architecture arch, unsigned long mach);
static bfd_boolean vms_set_section_contents
(bfd *abfd, asection *section, const PTR location, file_ptr offset,
bfd_size_type count);
static int vms_sizeof_headers (bfd *abfd,
struct bfd_link_info *info ATTRIBUTE_UNUSED);
static bfd_byte *vms_bfd_get_relocated_section_contents
(bfd *abfd, struct bfd_link_info *link_info,
struct bfd_link_order *link_order, bfd_byte *data,
bfd_boolean relocatable, asymbol **symbols);
static bfd_boolean vms_bfd_relax_section
(bfd *abfd, asection *section, struct bfd_link_info *link_info,
bfd_boolean *again);
static bfd_boolean vms_bfd_gc_sections
(bfd *abfd, struct bfd_link_info *link_info);
static bfd_boolean vms_bfd_merge_sections
(bfd *abfd, struct bfd_link_info *link_info);
static struct bfd_link_hash_table *vms_bfd_link_hash_table_create (bfd *abfd);
static void vms_bfd_link_hash_table_free (struct bfd_link_hash_table *hash);
static bfd_boolean vms_bfd_link_add_symbols
(bfd *abfd, struct bfd_link_info *link_info);
static bfd_boolean vms_bfd_final_link (bfd *abfd,
struct bfd_link_info *link_info);
static bfd_boolean vms_bfd_link_split_section (bfd *abfd, asection *section);
static long vms_get_dynamic_symtab_upper_bound (bfd *abfd);
static long vms_canonicalize_dynamic_symtab (bfd *abfd, asymbol **symbols);
static long vms_get_dynamic_reloc_upper_bound (bfd *abfd);
static long vms_canonicalize_dynamic_reloc
(bfd *abfd, arelent **arel, asymbol **symbols);
static bfd_boolean vms_bfd_merge_private_bfd_data (bfd *ibfd, bfd *obfd);
static bfd_boolean vms_bfd_set_private_flags (bfd *abfd, flagword flags);
#define vms_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
#define vms_make_empty_symbol _bfd_generic_make_empty_symbol
#define vms_bfd_link_just_syms _bfd_generic_link_just_syms
#define vms_bfd_is_group_section bfd_generic_is_group_section
#define vms_bfd_discard_group bfd_generic_discard_group
#define vms_section_already_linked _bfd_generic_section_already_linked
#define vms_bfd_define_common_symbol bfd_generic_define_common_symbol
#define vms_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
#define vms_get_synthetic_symtab _bfd_nodynamic_get_synthetic_symtab
#ifdef VMS_DEBUG
/* Cause debug info to be emitted for the structure. */
struct vms_private_data_struct _vms_private_data_struct_dummy;
struct vms_section_data_struct _vms_section_data_struct_dummy;
#endif
extern const bfd_target vms_vax_vec;
extern const bfd_target vms_alpha_vec;
/* Initialize private data */
static bfd_boolean
vms_initialize (bfd * abfd)
{
bfd_size_type amt;
bfd_set_start_address (abfd, (bfd_vma) -1);
amt = sizeof (struct vms_private_data_struct);
abfd->tdata.any = bfd_zalloc (abfd, amt);
if (abfd->tdata.any == NULL)
return FALSE;
if (bfd_get_flavour (abfd) == bfd_target_ovax_flavour)
PRIV (is_vax) = TRUE;
PRIV (file_format) = FF_UNKNOWN;
amt = sizeof (struct stack_struct) * STACKSIZE;
PRIV (stack) = bfd_alloc (abfd, amt);
if (PRIV (stack) == NULL)
goto error_ret1;
amt = sizeof (struct bfd_hash_table);
PRIV (vms_symbol_table) = bfd_alloc (abfd, amt);
if (PRIV (vms_symbol_table) == NULL)
goto error_ret1;
if (!bfd_hash_table_init (PRIV (vms_symbol_table), _bfd_vms_hash_newfunc,
sizeof (vms_symbol_entry)))
goto error_ret1;
amt = MAX_OUTREC_SIZE;
PRIV (output_buf) = bfd_alloc (abfd, amt);
if (PRIV (output_buf) == NULL)
goto error_ret2;
PRIV (length_pos) = 2;
return TRUE;
error_ret2:
bfd_hash_table_free (PRIV (vms_symbol_table));
error_ret1:
bfd_release (abfd, abfd->tdata.any);
abfd->tdata.any = NULL;
return FALSE;
}
struct pair
{
unsigned int section_count;
asection **sections;
};
/* Fill symbol->section with section pointer.
symbol->section is filled with the section index for defined symbols
during reading the GSD/EGSD section. But we need the pointer to the
bfd section later.
It has the correct value for referenced (undefined section) symbols.
Called from bfd_hash_traverse in vms_fixup_sections. */
static bfd_boolean
fill_section_ptr (struct bfd_hash_entry *entry, void *sections)
{
asymbol *sym = ((vms_symbol_entry *)entry)->symbol;
struct pair *data = (struct pair *)sections;
unsigned long sec = (unsigned long)sym->section;
#if VMS_DEBUG
vms_debug (6, "fill_section_ptr: sym %p, sec %p\n", sym, sec);
#endif
if (sec < data->section_count)
{
sym->section = data->sections[sec];
if (strcmp (sym->name, sym->section->name) == 0)
sym->flags |= BSF_SECTION_SYM;
}
else if (sec == (unsigned long)-1)
sym->section = &bfd_und_section;
return TRUE;
}
/* Fixup section pointers in symbols. */
static bfd_boolean
vms_fixup_sections (bfd * abfd)
{
struct pair data;
if (PRIV (fixup_done))
return TRUE;
data.section_count = PRIV (section_count);
data.sections = PRIV (sections);
bfd_hash_traverse (PRIV (vms_symbol_table), fill_section_ptr, &data);
PRIV (fixup_done) = TRUE;
return TRUE;
}
/* Slurp an ordered set of VMS object records. */
int
_bfd_vms_slurp_object_records (bfd * abfd)
{
int err, new_type, type = -1;
do
{
#if VMS_DEBUG
vms_debug (7, "reading at %08lx\n", bfd_tell (abfd));
#endif
new_type = _bfd_vms_get_object_record (abfd);
if (new_type < 0)
{
#if VMS_DEBUG
vms_debug (2, "next_record failed\n");
#endif
return -1;
}
if (type == EOBJ_S_C_EGSD && new_type != EOBJ_S_C_EGSD)
{
if (! vms_fixup_sections (abfd))
{
#if VMS_DEBUG
vms_debug (2, "vms_fixup_sections failed\n");
#endif
return -1;
}
}
type = new_type;
switch (type)
{
case OBJ_S_C_HDR:
case EOBJ_S_C_EMH:
err = _bfd_vms_slurp_hdr (abfd, type);
break;
case OBJ_S_C_EOM:
case OBJ_S_C_EOMW:
case EOBJ_S_C_EEOM:
err = _bfd_vms_slurp_eom (abfd, type);
break;
case OBJ_S_C_GSD:
case EOBJ_S_C_EGSD:
err = _bfd_vms_slurp_gsd (abfd, type);
break;
case OBJ_S_C_TIR:
case EOBJ_S_C_ETIR:
err = _bfd_vms_slurp_tir (abfd, type);
break;
case OBJ_S_C_DBG:
case EOBJ_S_C_EDBG:
err = _bfd_vms_slurp_dbg (abfd, type);
PRIV (dst_ptr_end) = PRIV (image_ptr);
break;
case OBJ_S_C_TBT:
case EOBJ_S_C_ETBT:
err = _bfd_vms_slurp_tbt (abfd, type);
PRIV (dst_ptr_end) = PRIV (image_ptr);
break;
case OBJ_S_C_LNK:
err = _bfd_vms_slurp_lnk (abfd, type);
break;
default:
err = -1;
}
if (err != 0)
{
#if VMS_DEBUG
vms_debug (2, "slurp type %d failed with %d\n", type, err);
#endif
return err;
}
}
while (type != EOBJ_S_C_EEOM && type != OBJ_S_C_EOM && type != OBJ_S_C_EOMW);
return 0;
}
/* Slurp a VMS module and return an error status. */
static int
vms_slurp_module (bfd *abfd)
{
int type, err;
if (PRIV (is_vax))
type = PRIV (vms_rec)[0];
else
type = bfd_getl16 (PRIV (vms_rec));
err = _bfd_vms_slurp_hdr (abfd, type);
if (err != 0)
{
bfd_set_error (bfd_error_wrong_format);
return err;
}
return _bfd_vms_slurp_object_records (abfd);
}
/* Slurp a VMS image and return an error status. */
static int
vms_slurp_image (bfd *abfd)
{
unsigned int isd_offset, ihs_offset;
int err;
err = _bfd_vms_slurp_ihd (abfd, &isd_offset, &ihs_offset);
if (err != 0)
{
bfd_set_error (bfd_error_wrong_format);
return err;
}
err = _bfd_vms_slurp_isd (abfd, isd_offset);
if (err != 0)
{
bfd_set_error (bfd_error_wrong_format);
return err;
}
return _bfd_vms_slurp_ihs (abfd, ihs_offset);
}
/* Check the format for a file being read.
Return a (bfd_target *) if it's an object file or zero if not. */
static const struct bfd_target *
vms_object_p (bfd *abfd)
{
const struct bfd_target *target_vector;
const bfd_arch_info_type *arch;
PTR tdata_save = abfd->tdata.any;
bfd_vma saddr_save = bfd_get_start_address (abfd);
int err = 0;
#if VMS_DEBUG
vms_debug (1, "vms_object_p(%p)\n", abfd);
#endif
if (!vms_initialize (abfd))
goto error_ret;
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET))
goto err_wrong_format;
switch (_bfd_vms_get_first_record (abfd))
{
case FT_UNKNOWN:
default:
err = -1;
break;
case FT_MODULE:
err = vms_slurp_module (abfd);
break;
case FT_IMAGE:
err = vms_slurp_image (abfd);
break;
}
if (err != 0)
goto err_wrong_format;
if (PRIV (is_vax))
{
if (! vms_fixup_sections (abfd))
{
#if VMS_DEBUG
vms_debug (2, "vms_fixup_sections failed\n");
#endif
goto err_wrong_format;
}
target_vector = &vms_vax_vec;
arch = bfd_scan_arch ("vax");
#if VMS_DEBUG
vms_debug (2, "arch is vax\n");
#endif
}
else
{
/* Set arch_info to alpha. */
target_vector = &vms_alpha_vec;
arch = bfd_scan_arch ("alpha");
#if VMS_DEBUG
vms_debug (2, "arch is alpha\n");
#endif
}
abfd->arch_info = arch;
return target_vector;
err_wrong_format:
bfd_set_error (bfd_error_wrong_format);
error_ret:
if (abfd->tdata.any != tdata_save && abfd->tdata.any != NULL)
bfd_release (abfd, abfd->tdata.any);
abfd->tdata.any = tdata_save;
bfd_set_start_address (abfd, saddr_save);
return NULL;
}
/* Check the format for a file being read.
Return a (bfd_target *) if it's an archive file or zero. */
static const struct bfd_target *
vms_archive_p (bfd * abfd ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_archive_p (%p)\n", abfd);
#endif
return NULL;
}
/* Set the format of a file being written. */
static bfd_boolean
vms_mkobject (bfd * abfd)
{
const bfd_arch_info_type *arch;
#if VMS_DEBUG
vms_debug (1, "vms_mkobject (%p)\n", abfd);
#endif
if (!vms_initialize (abfd))
return FALSE;
if (PRIV (is_vax))
arch = bfd_scan_arch ("vax");
else
arch = bfd_scan_arch ("alpha");
if (arch == 0)
{
bfd_set_error(bfd_error_wrong_format);
return FALSE;
}
abfd->arch_info = arch;
return TRUE;
}
/* Write cached information into a file being written, at bfd_close. */
static bfd_boolean
vms_write_object_contents (bfd * abfd)
{
#if VMS_DEBUG
vms_debug (1, "vms_write_object_contents (%p)\n", abfd);
#endif
if (abfd->section_count > 0) /* we have sections */
{
if (PRIV (is_vax))
{
if (_bfd_vms_write_hdr (abfd, OBJ_S_C_HDR) != 0)
return FALSE;
if (_bfd_vms_write_gsd (abfd, OBJ_S_C_GSD) != 0)
return FALSE;
if (_bfd_vms_write_tir (abfd, OBJ_S_C_TIR) != 0)
return FALSE;
if (_bfd_vms_write_tbt (abfd, OBJ_S_C_TBT) != 0)
return FALSE;
if (_bfd_vms_write_dbg (abfd, OBJ_S_C_DBG) != 0)
return FALSE;
if (abfd->section_count > 255)
{
if (_bfd_vms_write_eom (abfd, OBJ_S_C_EOMW) != 0)
return FALSE;
}
else
{
if (_bfd_vms_write_eom (abfd, OBJ_S_C_EOM) != 0)
return FALSE;
}
}
else
{
if (_bfd_vms_write_hdr (abfd, EOBJ_S_C_EMH) != 0)
return FALSE;
if (_bfd_vms_write_gsd (abfd, EOBJ_S_C_EGSD) != 0)
return FALSE;
if (_bfd_vms_write_tir (abfd, EOBJ_S_C_ETIR) != 0)
return FALSE;
if (_bfd_vms_write_tbt (abfd, EOBJ_S_C_ETBT) != 0)
return FALSE;
if (_bfd_vms_write_dbg (abfd, EOBJ_S_C_EDBG) != 0)
return FALSE;
if (_bfd_vms_write_eom (abfd, EOBJ_S_C_EEOM) != 0)
return FALSE;
}
}
return TRUE;
}
/* 4.1, generic. */
/* Free the reloc buffer for the specified section. */
static void
free_reloc_stream (bfd *abfd ATTRIBUTE_UNUSED, asection *section,
void *data ATTRIBUTE_UNUSED)
{
if (vms_section_data (section)->reloc_stream)
free (vms_section_data (section)->reloc_stream);
}
#ifdef VMS
/* Convert the file to variable record length format. This is done
using undocumented system call sys$modify().
Pure VMS version. */
static void
vms_convert_to_var (char *vms_filename)
{
struct FAB fab = cc$rms_fab;
fab.fab$l_fna = vms_filename;
fab.fab$b_fns = strlen (vms_filename);
fab.fab$b_fac = FAB$M_PUT;
fab.fab$l_fop = FAB$M_ESC;
fab.fab$l_ctx = RME$C_SETRFM;
sys$open (&fab);
fab.fab$b_rfm = FAB$C_VAR;
sys$modify (&fab);
sys$close (&fab);
}
static int
vms_convert_to_var_1 (char *filename, int type)
{
if (type != DECC$K_FILE)
return FALSE;
vms_convert_to_var (filename);
return TRUE;
}
/* Convert the file to variable record length format. This is done
using undocumented system call sys$modify().
Unix filename version. */
static int
vms_convert_to_var_unix_filename (const char *unix_filename)
{
if (decc$to_vms (unix_filename, &vms_convert_to_var_1, 0, 1) != 1)
return FALSE;
return TRUE;
}
#endif /* VMS */
/* Called when the BFD is being closed to do any necessary cleanup. */
static bfd_boolean
vms_close_and_cleanup (bfd * abfd)
{
#if VMS_DEBUG
vms_debug (1, "vms_close_and_cleanup (%p)\n", abfd);
#endif
if (abfd == NULL || abfd->tdata.any == NULL)
return TRUE;
if (PRIV (vms_buf) != NULL)
free (PRIV (vms_buf));
if (PRIV (sections) != NULL)
free (PRIV (sections));
if (PRIV (vms_symbol_table))
bfd_hash_table_free (PRIV (vms_symbol_table));
bfd_map_over_sections (abfd, free_reloc_stream, NULL);
bfd_release (abfd, abfd->tdata.any);
abfd->tdata.any = NULL;
#ifdef VMS
if (abfd->direction == write_direction)
{
/* Last step on VMS is to convert the file to variable record length
format. */
if (bfd_cache_close (abfd) != TRUE)
return FALSE;
if (vms_convert_to_var_unix_filename (abfd->filename) != TRUE)
return FALSE;
}
#endif
return TRUE;
}
/* Ask the BFD to free all cached information. */
static bfd_boolean
vms_bfd_free_cached_info (bfd * abfd ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_bfd_free_cached_info (%p)\n", abfd);
#endif
return TRUE;
}
/* Called when a new section is created. */
static bfd_boolean
vms_new_section_hook (bfd * abfd, asection *section)
{
bfd_size_type amt;
/* Count hasn't been incremented yet. */
unsigned int section_count = abfd->section_count + 1;
#if VMS_DEBUG
vms_debug (1, "vms_new_section_hook (%p, [%d]%s), count %d\n",
abfd, section->index, section->name, section_count);
#endif
bfd_set_section_alignment (abfd, section, 0);
if (section_count > PRIV (section_count))
{
bfd_size_type amt = section_count;
amt *= sizeof (asection *);
PRIV (sections) = bfd_realloc_or_free (PRIV (sections), amt);
if (PRIV (sections) == NULL)
return FALSE;
PRIV (section_count) = section_count;
}
#if VMS_DEBUG
vms_debug (6, "section_count: %d\n", PRIV (section_count));
#endif
PRIV (sections)[section->index] = section;
#if VMS_DEBUG
vms_debug (7, "%d: %s\n", section->index, section->name);
#endif
amt = sizeof (struct vms_section_data_struct);
section->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
if (section->used_by_bfd == NULL)
return FALSE;
return _bfd_generic_new_section_hook (abfd, section);
}
/* Read the contents of a section.
buf points to a buffer of buf_size bytes to be filled with
section data (starting at offset into section) */
static bfd_boolean
vms_get_section_contents (bfd * abfd ATTRIBUTE_UNUSED,
asection *section ATTRIBUTE_UNUSED,
void * buf ATTRIBUTE_UNUSED,
file_ptr offset ATTRIBUTE_UNUSED,
bfd_size_type buf_size ATTRIBUTE_UNUSED)
{
bfd_size_type size = section->size;
#if VMS_DEBUG
vms_debug (1, "vms_get_section_contents (%p, %s, %p, off %ld, size %d)\n",
abfd, section->name, buf, offset, (int)buf_size);
#endif
if (section->contents)
abort ();
section->contents = (unsigned char *) bfd_malloc (size);
if (section->contents == NULL)
{
bfd_set_error (bfd_error_no_memory);
return FALSE;
}
if (bfd_seek (abfd, section->filepos, SEEK_SET))
{
bfd_set_error (bfd_error_file_truncated);
return FALSE;
}
if (bfd_bread (section->contents, size, abfd) != size)
{
bfd_set_error (bfd_error_file_truncated);
return FALSE;
}
section->flags |= SEC_IN_MEMORY;
if (buf)
memcpy (buf, section->contents + offset, (size_t) buf_size);
return TRUE;
}
/* Read the contents of a section.
buf points to a buffer of buf_size bytes to be filled with
section data (starting at offset into section). */
static bfd_boolean
vms_get_section_contents_in_window (bfd * abfd ATTRIBUTE_UNUSED,
asection *section ATTRIBUTE_UNUSED,
bfd_window *w ATTRIBUTE_UNUSED,
file_ptr offset ATTRIBUTE_UNUSED,
bfd_size_type count ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_get_section_contents_in_window (%p, %s, %p, off %ld, count %d)\n",
abfd, section->name, w, offset, (int)count);
#endif
/* Shouldn't be called, since all sections are IN_MEMORY. */
return FALSE;
}
/* Part 4.2, copy private data. */
/* Called to copy BFD general private data from one object file
to another. */
static bfd_boolean
vms_bfd_copy_private_bfd_data (bfd *src ATTRIBUTE_UNUSED,
bfd *dest ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_bfd_copy_private_bfd_data (%p, %p)\n", src, dest);
#endif
return TRUE;
}
/* Merge private BFD information from the BFD @var{ibfd} to the
the output file BFD @var{obfd} when linking. Return <<TRUE>>
on success, <<FALSE>> on error. Possible error returns are:
o <<bfd_error_no_memory>> -
Not enough memory exists to create private data for @var{obfd}. */
static bfd_boolean
vms_bfd_merge_private_bfd_data (bfd * ibfd ATTRIBUTE_UNUSED,
bfd * obfd ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1,"vms_bfd_merge_private_bfd_data (%p, %p)\n", ibfd, obfd);
#endif
return TRUE;
}
/* Set private BFD flag information in the BFD @var{abfd}.
Return <<TRUE>> on success, <<FALSE>> on error. Possible error
returns are:
o <<bfd_error_no_memory>> -
Not enough memory exists to create private data for @var{obfd}. */
static bfd_boolean
vms_bfd_set_private_flags (bfd * abfd ATTRIBUTE_UNUSED,
flagword flags ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1,"vms_bfd_set_private_flags (%p, %lx)\n", abfd, (long)flags);
#endif
return TRUE;
}
/* Called to copy BFD private section data from one object file
to another. */
static bfd_boolean
vms_bfd_copy_private_section_data (bfd *srcbfd ATTRIBUTE_UNUSED,
asection *srcsec ATTRIBUTE_UNUSED,
bfd *dstbfd ATTRIBUTE_UNUSED,
asection *dstsec ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_bfd_copy_private_section_data (%p, %s, %p, %s)\n",
srcbfd, srcsec->name, dstbfd, dstsec->name);
#endif
return TRUE;
}
/* Called to copy BFD private symbol data from one object file
to another. */
static bfd_boolean
vms_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
asymbol *isym ATTRIBUTE_UNUSED,
bfd *obfd ATTRIBUTE_UNUSED,
asymbol *osym ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_bfd_copy_private_symbol_data (%p, %s, %p, %s)\n",
ibfd, isym->name, obfd, osym->name);
#endif
return TRUE;
}
/* Part 4.3, core file. */
/* Return a read-only string explaining which program was running
when it failed and produced the core file abfd. */
static char *
vms_core_file_failing_command (bfd * abfd ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_core_file_failing_command (%p)\n", abfd);
#endif
return NULL;
}
/* Returns the signal number which caused the core dump which
generated the file the BFD abfd is attached to. */
static int
vms_core_file_failing_signal (bfd * abfd ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_core_file_failing_signal (%p)\n", abfd);
#endif
return 0;
}
/* Return TRUE if the core file attached to core_bfd was generated
by a run of the executable file attached to exec_bfd, FALSE otherwise. */
static bfd_boolean
vms_core_file_matches_executable_p (bfd * abfd ATTRIBUTE_UNUSED,
bfd *bbfd ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_core_file_matches_executable_p (%p, %p)\n", abfd, bbfd);
#endif
return FALSE;
}
/* Part 4.4, archive. */
/* ??? do something with an archive map.
Return FALSE on error, TRUE otherwise. */
static bfd_boolean
vms_slurp_armap (bfd * abfd ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_slurp_armap (%p)\n", abfd);
#endif
return FALSE;
}
/* ??? do something with an extended name table.
Return FALSE on error, TRUE otherwise. */
static bfd_boolean
vms_slurp_extended_name_table (bfd * abfd ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_slurp_extended_name_table (%p)\n", abfd);
#endif
return FALSE;
}
/* ??? do something with an extended name table.
Return FALSE on error, TRUE otherwise. */
static bfd_boolean
vms_construct_extended_name_table (bfd * abfd ATTRIBUTE_UNUSED,
char **tabloc ATTRIBUTE_UNUSED,
bfd_size_type *tablen ATTRIBUTE_UNUSED,
const char **name ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_construct_extended_name_table (%p)\n", abfd);
#endif
return FALSE;
}
/* Truncate the name of an archive to match system-dependent restrictions. */
static void
vms_truncate_arname (bfd * abfd ATTRIBUTE_UNUSED,
const char *pathname ATTRIBUTE_UNUSED,
char *arhdr ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_truncate_arname (%p, %s, %s)\n", abfd, pathname, arhdr);
#endif
}
/* ??? write archive map. */
static bfd_boolean
vms_write_armap (bfd *arch ATTRIBUTE_UNUSED,
unsigned int elength ATTRIBUTE_UNUSED,
struct orl *map ATTRIBUTE_UNUSED,
unsigned int orl_count ATTRIBUTE_UNUSED,
int stridx ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_write_armap (%p, %d, %p, %d %d)\n",
arch, elength, map, orl_count, stridx);
#endif
return TRUE;
}
/* Read archive header ??? */
static void *
vms_read_ar_hdr (bfd * abfd ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_read_ar_hdr (%p)\n", abfd);
#endif
return NULL;
}
/* Provided a BFD, @var{archive}, containing an archive and NULL, open
an input BFD on the first contained element and returns that.
Subsequent calls should pass the archive and the previous return value
to return a created BFD to the next contained element.
NULL is returned when there are no more. */
static bfd *
vms_openr_next_archived_file (bfd *arch ATTRIBUTE_UNUSED,
bfd *prev ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_openr_next_archived_file (%p, %p)\n", arch, prev);
#endif
return NULL;
}
/* Return the BFD which is referenced by the symbol in ABFD indexed by
INDEX. INDEX should have been returned by bfd_get_next_mapent. */
static bfd *
vms_get_elt_at_index (bfd * abfd, symindex index)
{
#if VMS_DEBUG
vms_debug (1, "vms_get_elt_at_index (%p, %p)\n", abfd, index);
#endif
return _bfd_generic_get_elt_at_index (abfd, index);
}
/* ???
-> bfd_generic_stat_arch_elt. */
static int
vms_generic_stat_arch_elt (bfd * abfd, struct stat *st)
{
#if VMS_DEBUG
vms_debug (1, "vms_generic_stat_arch_elt (%p, %p)\n", abfd, st);
#endif
return bfd_generic_stat_arch_elt (abfd, st);
}
/* This is a new function in bfd 2.5. */
static bfd_boolean
vms_update_armap_timestamp (bfd * abfd ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_update_armap_timestamp (%p)\n", abfd);
#endif
return TRUE;
}
/* Part 4.5, symbols. */
/* Return the number of bytes required to store a vector of pointers
to asymbols for all the symbols in the BFD abfd, including a
terminal NULL pointer. If there are no symbols in the BFD,
then return 0. If an error occurs, return -1. */
static long
vms_get_symtab_upper_bound (bfd * abfd)
{
#if VMS_DEBUG
vms_debug (1, "vms_get_symtab_upper_bound (%p), %d symbols\n", abfd, PRIV (gsd_sym_count));
#endif
return (PRIV (gsd_sym_count) + 1) * sizeof (asymbol *);
}
/* Copy symbols from hash table to symbol vector
called from bfd_hash_traverse in vms_canonicalize_symtab
init counter to 0 if entry == 0. */
static bfd_boolean
copy_symbols (struct bfd_hash_entry *entry, void * arg)
{
bfd * abfd = (bfd *) arg;
if (entry == NULL) /* Init counter. */
PRIV (symnum) = 0;
else /* Fill vector, inc counter. */
PRIV (symcache)[PRIV (symnum)++] = ((vms_symbol_entry *)entry)->symbol;
return TRUE;
}
/* Read the symbols from the BFD abfd, and fills in the vector
location with pointers to the symbols and a trailing NULL.
Return number of symbols read. */
static long
vms_canonicalize_symtab (bfd * abfd, asymbol **symbols)
{
#if VMS_DEBUG
vms_debug (1, "vms_canonicalize_symtab (%p, <ret>)\n", abfd);
#endif
/* Init counter. */
copy_symbols (NULL, abfd);
/* Traverse table and fill symbols vector. */
PRIV (symcache) = symbols;
bfd_hash_traverse (PRIV (vms_symbol_table), copy_symbols, abfd);
symbols[PRIV (gsd_sym_count)] = NULL;
return PRIV (gsd_sym_count);
}
/* Print symbol to file according to how. how is one of
bfd_print_symbol_name just print the name
bfd_print_symbol_more print more (???)
bfd_print_symbol_all print all we know, which is not much right now :-). */
static void
vms_print_symbol (bfd * abfd,
void * file,
asymbol *symbol,
bfd_print_symbol_type how)
{
#if VMS_DEBUG
vms_debug (1, "vms_print_symbol (%p, %p, %p, %d)\n", abfd, file, symbol, how);
#endif
switch (how)
{
case bfd_print_symbol_name:
case bfd_print_symbol_more:
fprintf ((FILE *)file," %s", symbol->name);
break;
case bfd_print_symbol_all:
{
const char *section_name = symbol->section->name;
bfd_print_symbol_vandf (abfd, file, symbol);
fprintf ((FILE *) file," %-8s %s", section_name, symbol->name);
}
break;
}
}
/* Return information about symbol in ret.
fill type, value and name
type:
A absolute
B bss segment symbol
C common symbol
D data segment symbol
f filename
t a static function symbol
T text segment symbol
U undefined
- debug. */
static void
vms_get_symbol_info (bfd * abfd ATTRIBUTE_UNUSED,
asymbol *symbol,
symbol_info *ret)
{
asection *sec;
#if VMS_DEBUG
vms_debug (1, "vms_get_symbol_info (%p, %p, %p)\n", abfd, symbol, ret);
#endif
sec = symbol->section;
if (ret == NULL)
return;
if (sec == 0)
ret->type = 'U';
else if (bfd_is_com_section (sec))
ret->type = 'C';
else if (bfd_is_abs_section (sec))
ret->type = 'A';
else if (bfd_is_und_section (sec))
ret->type = 'U';
else if (bfd_is_ind_section (sec))
ret->type = 'I';
else if (bfd_get_section_flags (abfd, sec) & SEC_CODE)
ret->type = 'T';
else if (bfd_get_section_flags (abfd, sec) & SEC_DATA)
ret->type = 'D';
else if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC)
ret->type = 'B';
else
ret->type = '-';
if (ret->type != 'U')
ret->value = symbol->value + symbol->section->vma;
else
ret->value = 0;
ret->name = symbol->name;
}
/* Return TRUE if the given symbol sym in the BFD abfd is
a compiler generated local label, else return FALSE. */
static bfd_boolean
vms_bfd_is_local_label_name (bfd * abfd ATTRIBUTE_UNUSED,
const char *name)
{
#if VMS_DEBUG
vms_debug (1, "vms_bfd_is_local_label_name (%p, %s)\n", abfd, name);
#endif
return name[0] == '$';
}
/* Get source line number for symbol. */
static alent *
vms_get_lineno (bfd * abfd ATTRIBUTE_UNUSED,
asymbol *symbol ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_get_lineno (%p, %p)\n", abfd, symbol);
#endif
return NULL;
}
/* Provided a BFD, a section and an offset into the section, calculate and
return the name of the source file and the line nearest to the wanted
location. */
static bfd_boolean
vms_find_nearest_line (bfd * abfd ATTRIBUTE_UNUSED,
asection *section ATTRIBUTE_UNUSED,
asymbol **symbols ATTRIBUTE_UNUSED,
bfd_vma offset ATTRIBUTE_UNUSED,
const char **file ATTRIBUTE_UNUSED,
const char **func ATTRIBUTE_UNUSED,
unsigned int *line ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_find_nearest_line (%p, %s, %p, %ld, <ret>, <ret>, <ret>)\n",
abfd, section->name, symbols, (long int)offset);
#endif
return _bfd_vms_find_nearest_dst_line (abfd, section, symbols, offset, file, func, line);
}
static bfd_boolean
vms_find_inliner_info (bfd * abfd ATTRIBUTE_UNUSED,
const char **file ATTRIBUTE_UNUSED,
const char **func ATTRIBUTE_UNUSED,
unsigned int *line ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_find_inliner_info (%p, <ret>, <ret>, <ret>)\n",
abfd);
#endif
return FALSE;
}
/* Back-door to allow format-aware applications to create debug symbols
while using BFD for everything else. Currently used by the assembler
when creating COFF files. */
static asymbol *
vms_bfd_make_debug_symbol (bfd * abfd ATTRIBUTE_UNUSED,
void *ptr ATTRIBUTE_UNUSED,
unsigned long size ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_bfd_make_debug_symbol (%p, %p, %ld)\n", abfd, ptr, size);
#endif
return NULL;
}
/* Read minisymbols. For minisymbols, we use the unmodified a.out
symbols. The minisymbol_to_symbol function translates these into
BFD asymbol structures. */
static long
vms_read_minisymbols (bfd * abfd,
bfd_boolean dynamic,
void * *minisymsp,
unsigned int *sizep)
{
#if VMS_DEBUG
vms_debug (1, "vms_read_minisymbols (%p, %d, %p, %d)\n", abfd, dynamic, minisymsp, *sizep);
#endif
return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
}
/* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
unmodified a.out symbol. The SYM argument is a structure returned
by bfd_make_empty_symbol, which we fill in here. */
static asymbol *
vms_minisymbol_to_symbol (bfd * abfd,
bfd_boolean dynamic,
const void * minisym,
asymbol *sym)
{
#if VMS_DEBUG
vms_debug (1, "vms_minisymbol_to_symbol (%p, %d, %p, %p)\n", abfd, dynamic, minisym, sym);
#endif
return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
}
/* Part 4.6, relocations. */
/* Allocate the reloc buffer for the specified section. */
static void
alloc_reloc_stream (bfd *abfd ATTRIBUTE_UNUSED, asection *section,
void *alloc_error)
{
unsigned char *ptr;
/* If there were no relocations, there is nothing to do. */
if (section->reloc_count == 0)
return;
ptr = bfd_malloc (vms_section_data (section)->reloc_size);
if (ptr == NULL)
{
*(bfd_boolean *)alloc_error = TRUE;
return;
}
vms_section_data (section)->reloc_stream = ptr;
}
/* Read in the relocs for the specified section and internalize them.
The implementation is loosely based on the SOM code and made up
of 3 distinct phases:
1. When the VMS object is opened and parsed, the number and the size
of the relocations are computed for all sections. This makes it
possible to know upfront both which sections have no relocs and
the size of the reloc buffers for the other sections, at virtually
no cost for consumers that don't care about relocs at all.
2. When vms_slurp_reloc_table is invoked for the first time on a section
with relocs, the object is traversed and all the reloc information
is saved in per-section reloc buffers. It would be very inefficient
to scan the whole file on each invocation, so we slurp for all the
sections at once.
3. On subsequent invocations of vms_slurp_reloc_table, the relocs for the
specified section are fetched from the buffer, decoded and internalized.
The buffer is then freed since the internalized relocs are attached to
the section, turning additional invocations of vms_slurp_reloc_table
on the same section into no-ops.
Since VMS objects have very few sections, it could be profitable to merge
phase #2 and phase #3, i.e. to decode and internalize the relocs for all
the sections at once. The current implementation is more elegant. */
static bfd_boolean
vms_slurp_reloc_table (bfd *abfd, asection *section, asymbol **symbols)
{
arelent *internal_relocs;
bfd_size_type amt;
int err;
/* If there were no relocations, there is nothing to do. */
if (section->reloc_count == 0)
return TRUE;
/* Return saved information about the relocations if it is available. */
if (section->relocation != NULL)
return TRUE;
/* If the relocation stream has not been slurped, do it now. */
if (vms_section_data (section)->reloc_stream == NULL)
{
bfd_boolean alloc_error = FALSE;
int type;
/* Size the reloc buffer for each section. */
bfd_map_over_sections (abfd, alloc_reloc_stream, &alloc_error);
if (alloc_error)
return FALSE;
if (bfd_seek (abfd, 0, SEEK_SET) != 0)
return FALSE;
/* Reset section pointer. */
PRIV (image_section) = NULL;
do
{
type = _bfd_vms_get_object_record (abfd);
if (type != EOBJ_S_C_ETIR
&& type != EOBJ_S_C_EDBG
&& type != EOBJ_S_C_ETBT)
continue;
err = _bfd_vms_slurp_relocs (abfd);
if (err != 0)
{
#if VMS_DEBUG
vms_debug (2, "slurp relocs failed with %d\n", err);
#endif
return FALSE;
}
}
while (type != EOBJ_S_C_EEOM);
}
amt = section->reloc_count * sizeof (arelent);
internal_relocs = (arelent *) bfd_zalloc (abfd, amt);
if (internal_relocs == NULL)
return FALSE;
/* Decode and internalize the relocations. */
err = _bfd_vms_decode_relocs (abfd, internal_relocs, section, symbols);
if (err != 0)
{
#if VMS_DEBUG
vms_debug (2, "decode relocs failed with %d\n", err);
#endif
return FALSE;
}
/* We're done with the external relocations. Free them. */
free (vms_section_data (section)->reloc_stream);
vms_section_data (section)->reloc_stream = NULL;
/* Save our results and return success. */
section->relocation = internal_relocs;
return TRUE;
}
/* Return the number of bytes required to store the relocation
information associated with the given section. */
static long
vms_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, asection *section)
{
return (section->reloc_count + 1) * sizeof (arelent *);
}
/* Convert relocations from VMS (external) form into BFD internal
form. Return the number of relocations. */
static long
vms_canonicalize_reloc (bfd *abfd, asection *section, arelent **relptr,
asymbol **symbols)
{
arelent *tblptr;
int count;
if (! vms_slurp_reloc_table (abfd, section, symbols))
return -1;
count = section->reloc_count;
tblptr = section->relocation;
while (count--)
*relptr++ = tblptr++;
*relptr = (arelent *) NULL;
return section->reloc_count;
}
/* This is just copied from ecoff-alpha, needs to be fixed probably. */
/* How to process the various reloc types. */
static bfd_reloc_status_type
reloc_nil (bfd * abfd ATTRIBUTE_UNUSED,
arelent *reloc ATTRIBUTE_UNUSED,
asymbol *sym ATTRIBUTE_UNUSED,
void * data ATTRIBUTE_UNUSED,
asection *sec ATTRIBUTE_UNUSED,
bfd *output_bfd ATTRIBUTE_UNUSED,
char **error_message ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "reloc_nil (abfd %p, output_bfd %p)\n", abfd, output_bfd);
vms_debug (2, "In section %s, symbol %s\n",
sec->name, sym->name);
vms_debug (2, "reloc sym %s, addr %08lx, addend %08lx, reloc is a %s\n",
reloc->sym_ptr_ptr[0]->name,
(unsigned long)reloc->address,
(unsigned long)reloc->addend, reloc->howto->name);
vms_debug (2, "data at %p\n", data);
/* _bfd_hexdump (2, data, bfd_get_reloc_size (reloc->howto), 0); */
#endif
return bfd_reloc_ok;
}
/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
from smaller values. Start with zero, widen, *then* decrement. */
#define MINUS_ONE (((bfd_vma)0) - 1)
static reloc_howto_type alpha_howto_table[] =
{
HOWTO (ALPHA_R_IGNORE, /* Type. */
0, /* Rightshift. */
0, /* Size (0 = byte, 1 = short, 2 = long). */
8, /* Bitsize. */
TRUE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_dont,/* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"IGNORE", /* Name. */
TRUE, /* Partial_inplace. */
0, /* Source mask */
0, /* Dest mask. */
TRUE), /* PC rel offset. */
/* A 64 bit reference to a symbol. */
HOWTO (ALPHA_R_REFQUAD, /* Type. */
0, /* Rightshift. */
4, /* Size (0 = byte, 1 = short, 2 = long). */
64, /* Bitsize. */
FALSE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_bitfield, /* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"REFQUAD", /* Name. */
TRUE, /* Partial_inplace. */
MINUS_ONE, /* Source mask. */
MINUS_ONE, /* Dest mask. */
FALSE), /* PC rel offset. */
/* A 21 bit branch. The native assembler generates these for
branches within the text segment, and also fills in the PC
relative offset in the instruction. */
HOWTO (ALPHA_R_BRADDR, /* Type. */
2, /* Rightshift. */
2, /* Size (0 = byte, 1 = short, 2 = long). */
21, /* Bitsize. */
TRUE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_signed, /* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"BRADDR", /* Name. */
TRUE, /* Partial_inplace. */
0x1fffff, /* Source mask. */
0x1fffff, /* Dest mask. */
FALSE), /* PC rel offset. */
/* A hint for a jump to a register. */
HOWTO (ALPHA_R_HINT, /* Type. */
2, /* Rightshift. */
1, /* Size (0 = byte, 1 = short, 2 = long). */
14, /* Bitsize. */
TRUE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_dont,/* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"HINT", /* Name. */
TRUE, /* Partial_inplace. */
0x3fff, /* Source mask. */
0x3fff, /* Dest mask. */
FALSE), /* PC rel offset. */
/* 16 bit PC relative offset. */
HOWTO (ALPHA_R_SREL16, /* Type. */
0, /* Rightshift. */
1, /* Size (0 = byte, 1 = short, 2 = long). */
16, /* Bitsize. */
TRUE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_signed, /* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"SREL16", /* Name. */
TRUE, /* Partial_inplace. */
0xffff, /* Source mask. */
0xffff, /* Dest mask. */
FALSE), /* PC rel offset. */
/* 32 bit PC relative offset. */
HOWTO (ALPHA_R_SREL32, /* Type. */
0, /* Rightshift. */
2, /* Size (0 = byte, 1 = short, 2 = long). */
32, /* Bitsize. */
TRUE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_signed, /* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"SREL32", /* Name. */
TRUE, /* Partial_inplace. */
0xffffffff, /* Source mask. */
0xffffffff, /* Dest mask. */
FALSE), /* PC rel offset. */
/* A 64 bit PC relative offset. */
HOWTO (ALPHA_R_SREL64, /* Type. */
0, /* Rightshift. */
4, /* Size (0 = byte, 1 = short, 2 = long). */
64, /* Bitsize. */
TRUE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_signed, /* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"SREL64", /* Name. */
TRUE, /* Partial_inplace. */
MINUS_ONE, /* Source mask. */
MINUS_ONE, /* Dest mask. */
FALSE), /* PC rel offset. */
/* Push a value on the reloc evaluation stack. */
HOWTO (ALPHA_R_OP_PUSH, /* Type. */
0, /* Rightshift. */
0, /* Size (0 = byte, 1 = short, 2 = long). */
0, /* Bitsize. */
FALSE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_dont,/* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"OP_PUSH", /* Name. */
FALSE, /* Partial_inplace. */
0, /* Source mask. */
0, /* Dest mask. */
FALSE), /* PC rel offset. */
/* Store the value from the stack at the given address. Store it in
a bitfield of size r_size starting at bit position r_offset. */
HOWTO (ALPHA_R_OP_STORE, /* Type. */
0, /* Rightshift. */
4, /* Size (0 = byte, 1 = short, 2 = long). */
64, /* Bitsize. */
FALSE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_dont,/* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"OP_STORE", /* Name. */
FALSE, /* Partial_inplace. */
0, /* Source mask. */
MINUS_ONE, /* Dest mask. */
FALSE), /* PC rel offset. */
/* Subtract the reloc address from the value on the top of the
relocation stack. */
HOWTO (ALPHA_R_OP_PSUB, /* Type. */
0, /* Rightshift. */
0, /* Size (0 = byte, 1 = short, 2 = long). */
0, /* Bitsize. */
FALSE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_dont,/* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"OP_PSUB", /* Name. */
FALSE, /* Partial_inplace. */
0, /* Source mask. */
0, /* Dest mask. */
FALSE), /* PC rel offset. */
/* Shift the value on the top of the relocation stack right by the
given value. */
HOWTO (ALPHA_R_OP_PRSHIFT, /* Type. */
0, /* Rightshift. */
0, /* Size (0 = byte, 1 = short, 2 = long). */
0, /* Bitsize. */
FALSE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_dont,/* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"OP_PRSHIFT", /* Name. */
FALSE, /* Partial_inplace. */
0, /* Source mask. */
0, /* Dest mask. */
FALSE), /* PC rel offset. */
/* Hack. Linkage is done by linker. */
HOWTO (ALPHA_R_LINKAGE, /* Type. */
0, /* Rightshift. */
8, /* Size (0 = byte, 1 = short, 2 = long). */
256, /* Bitsize. */
FALSE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_dont,/* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"LINKAGE", /* Name. */
FALSE, /* Partial_inplace. */
0, /* Source mask. */
0, /* Dest mask. */
FALSE), /* PC rel offset. */
/* A 32 bit reference to a symbol. */
HOWTO (ALPHA_R_REFLONG, /* Type. */
0, /* Rightshift. */
2, /* Size (0 = byte, 1 = short, 2 = long). */
32, /* Bitsize. */
FALSE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_bitfield, /* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"REFLONG", /* Name. */
TRUE, /* Partial_inplace. */
0xffffffff, /* Source mask. */
0xffffffff, /* Dest mask. */
FALSE), /* PC rel offset. */
/* A 64 bit reference to a procedure, written as 32 bit value. */
HOWTO (ALPHA_R_CODEADDR, /* Type. */
0, /* Rightshift. */
4, /* Size (0 = byte, 1 = short, 2 = long). */
64, /* Bitsize. */
FALSE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_signed,/* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"CODEADDR", /* Name. */
FALSE, /* Partial_inplace. */
0xffffffff, /* Source mask. */
0xffffffff, /* Dest mask. */
FALSE), /* PC rel offset. */
HOWTO (ALPHA_R_NOP, /* Type. */
0, /* Rightshift. */
3, /* Size (0 = byte, 1 = short, 2 = long). */
0, /* Bitsize. */
/* The following value must match that of ALPHA_R_BSR/ALPHA_R_BOH
because the calculations for the 3 relocations are the same.
See B.4.5.2 of the OpenVMS Linker Utility Manual. */
TRUE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_dont,/* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"NOP", /* Name. */
FALSE, /* Partial_inplace. */
0xffffffff, /* Source mask. */
0xffffffff, /* Dest mask. */
FALSE), /* PC rel offset. */
HOWTO (ALPHA_R_BSR, /* Type. */
0, /* Rightshift. */
3, /* Size (0 = byte, 1 = short, 2 = long). */
0, /* Bitsize. */
TRUE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_dont,/* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"BSR", /* Name. */
FALSE, /* Partial_inplace. */
0xffffffff, /* Source mask. */
0xffffffff, /* Dest mask. */
FALSE), /* PC rel offset. */
HOWTO (ALPHA_R_LDA, /* Type. */
0, /* Rightshift. */
3, /* Size (0 = byte, 1 = short, 2 = long). */
0, /* Bitsize. */
FALSE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_dont,/* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"LDA", /* Name. */
FALSE, /* Partial_inplace. */
0xffffffff, /* Source mask. */
0xffffffff, /* Dest mask. */
FALSE), /* PC rel offset. */
HOWTO (ALPHA_R_BOH, /* Type. */
0, /* Rightshift. */
3, /* Size (0 = byte, 1 = short, 2 = long, 3 = nil). */
0, /* Bitsize. */
TRUE, /* PC relative. */
0, /* Bitpos. */
complain_overflow_dont,/* Complain_on_overflow. */
reloc_nil, /* Special_function. */
"BOH", /* Name. */
FALSE, /* Partial_inplace. */
0xffffffff, /* Source mask. */
0xffffffff, /* Dest mask. */
FALSE), /* PC rel offset. */
};
/* Return a pointer to a howto structure which, when invoked, will perform
the relocation code on data from the architecture noted. */
static const struct reloc_howto_struct *
vms_bfd_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
int alpha_type;
#if VMS_DEBUG
vms_debug (1, "vms_bfd_reloc_type_lookup (%p, %d)\t", abfd, code);
#endif
switch (code)
{
case BFD_RELOC_16: alpha_type = ALPHA_R_SREL16; break;
case BFD_RELOC_32: alpha_type = ALPHA_R_REFLONG; break;
case BFD_RELOC_64: alpha_type = ALPHA_R_REFQUAD; break;
case BFD_RELOC_CTOR: alpha_type = ALPHA_R_REFQUAD; break;
case BFD_RELOC_23_PCREL_S2: alpha_type = ALPHA_R_BRADDR; break;
case BFD_RELOC_ALPHA_HINT: alpha_type = ALPHA_R_HINT; break;
case BFD_RELOC_16_PCREL: alpha_type = ALPHA_R_SREL16; break;
case BFD_RELOC_32_PCREL: alpha_type = ALPHA_R_SREL32; break;
case BFD_RELOC_64_PCREL: alpha_type = ALPHA_R_SREL64; break;
case BFD_RELOC_ALPHA_LINKAGE: alpha_type = ALPHA_R_LINKAGE; break;
case BFD_RELOC_ALPHA_CODEADDR: alpha_type = ALPHA_R_CODEADDR; break;
case BFD_RELOC_ALPHA_NOP: alpha_type = ALPHA_R_NOP; break;
case BFD_RELOC_ALPHA_BSR: alpha_type = ALPHA_R_BSR; break;
case BFD_RELOC_ALPHA_LDA: alpha_type = ALPHA_R_LDA; break;
case BFD_RELOC_ALPHA_BOH: alpha_type = ALPHA_R_BOH; break;
default:
(*_bfd_error_handler) ("reloc (%d) is *UNKNOWN*", code);
return NULL;
}
#if VMS_DEBUG
vms_debug (2, "reloc is %s\n", alpha_howto_table[alpha_type].name);
#endif
return & alpha_howto_table[alpha_type];
}
static reloc_howto_type *
vms_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
const char *r_name)
{
unsigned int i;
for (i = 0;
i < sizeof (alpha_howto_table) / sizeof (alpha_howto_table[0]);
i++)
if (alpha_howto_table[i].name != NULL
&& strcasecmp (alpha_howto_table[i].name, r_name) == 0)
return &alpha_howto_table[i];
return NULL;
}
/* Part 4.7, writing an object file. */
/* Set the architecture and machine type in BFD abfd to arch and mach.
Find the correct pointer to a structure and insert it into the arch_info
pointer. */
static bfd_boolean
vms_set_arch_mach (bfd * abfd,
enum bfd_architecture arch ATTRIBUTE_UNUSED,
unsigned long mach ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_set_arch_mach (%p, %d, %ld)\n", abfd, arch, mach);
#endif
if (arch != bfd_arch_alpha
&& arch != bfd_arch_vax
&& arch != bfd_arch_unknown)
return FALSE;
return bfd_default_set_arch_mach (abfd, arch, mach);
}
/* Sets the contents of the section section in BFD abfd to the data starting
in memory at LOCATION. The data is written to the output section starting
at offset offset for count bytes.
Normally TRUE is returned, else FALSE. Possible error returns are:
o bfd_error_no_contents - The output section does not have the
SEC_HAS_CONTENTS attribute, so nothing can be written to it.
o and some more too */
static bfd_boolean
vms_set_section_contents (bfd * abfd,
asection *section,
const void * location,
file_ptr offset,
bfd_size_type count)
{
#if VMS_DEBUG
vms_debug (1, "vms_set_section_contents (%p, sec %s, loc %p, off %ld, count %d)\n",
abfd, section->name, location, (long int)offset, (int)count);
vms_debug (2, "size %d\n", (int) section->size);
#endif
if (count == (bfd_size_type)0)
return TRUE;
if (section->contents == NULL)
section->contents = bfd_alloc (abfd, section->size);
if (section->contents == NULL)
return FALSE;
memcpy (section->contents + offset, location, (size_t) count);
return TRUE;
}
/* Part 4.8, linker. */
/* Get the size of the section headers. */
static int
vms_sizeof_headers (bfd * abfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_sizeof_headers (%p, %s)\n", abfd, (reloc)?"True":"False");
#endif
return 0;
}
/* Provides default handling of relocation effort for back ends
which can't be bothered to do it efficiently. */
static bfd_byte *
vms_bfd_get_relocated_section_contents (bfd * abfd ATTRIBUTE_UNUSED,
struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
struct bfd_link_order *link_order ATTRIBUTE_UNUSED,
bfd_byte *data ATTRIBUTE_UNUSED,
bfd_boolean relocatable ATTRIBUTE_UNUSED,
asymbol **symbols ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_bfd_get_relocated_section_contents (%p, %p, %p, %p, %s, %p)\n",
abfd, link_info, link_order, data, (relocatable)?"True":"False", symbols);
#endif
return NULL;
}
/* ??? */
static bfd_boolean
vms_bfd_relax_section (bfd * abfd ATTRIBUTE_UNUSED,
asection *section ATTRIBUTE_UNUSED,
struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
bfd_boolean *again ATTRIBUTE_UNUSED)
{
if (link_info->relocatable)
(*link_info->callbacks->einfo)
(_("%P%F: --relax and -r may not be used together\n"));
#if VMS_DEBUG
vms_debug (1, "vms_bfd_relax_section (%p, %s, %p, <ret>)\n",
abfd, section->name, link_info);
#endif
return TRUE;
}
static bfd_boolean
vms_bfd_gc_sections (bfd * abfd ATTRIBUTE_UNUSED,
struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_bfd_gc_sections (%p, %p)\n", abfd, link_info);
#endif
return TRUE;
}
static bfd_boolean
vms_bfd_merge_sections (bfd * abfd ATTRIBUTE_UNUSED,
struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_bfd_merge_sections (%p, %p)\n", abfd, link_info);
#endif
return TRUE;
}
/* Create a hash table for the linker. Different backends store
different information in this table. */
static struct bfd_link_hash_table *
vms_bfd_link_hash_table_create (bfd * abfd ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_bfd_link_hash_table_create (%p)\n", abfd);
#endif
return NULL;
}
/* Free a linker hash table. */
static void
vms_bfd_link_hash_table_free (struct bfd_link_hash_table *hash ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_bfd_link_hash_table_free (%p)\n", abfd);
#endif
}
/* Add symbols from this object file into the hash table. */
static bfd_boolean
vms_bfd_link_add_symbols (bfd * abfd ATTRIBUTE_UNUSED,
struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_bfd_link_add_symbols (%p, %p)\n", abfd, link_info);
#endif
return FALSE;
}
/* Do a link based on the link_order structures attached to each
section of the BFD. */
static bfd_boolean
vms_bfd_final_link (bfd * abfd ATTRIBUTE_UNUSED,
struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_bfd_final_link (%p, %p)\n", abfd, link_info);
#endif
return TRUE;
}
/* Should this section be split up into smaller pieces during linking. */
static bfd_boolean
vms_bfd_link_split_section (bfd * abfd ATTRIBUTE_UNUSED,
asection *section ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_bfd_link_split_section (%p, %s)\n", abfd, section->name);
#endif
return FALSE;
}
/* Part 4.9, dynamic symbols and relocations. */
/* Get the amount of memory required to hold the dynamic symbols. */
static long
vms_get_dynamic_symtab_upper_bound (bfd * abfd ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_get_dynamic_symtab_upper_bound (%p)\n", abfd);
#endif
return 0L;
}
static bfd_boolean
vms_bfd_print_private_bfd_data (bfd * abfd ATTRIBUTE_UNUSED,
void *file ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_bfd_print_private_bfd_data (%p)\n", abfd);
#endif
return FALSE;
}
/* Read in the dynamic symbols. */
static long
vms_canonicalize_dynamic_symtab (bfd * abfd ATTRIBUTE_UNUSED,
asymbol **symbols ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_canonicalize_dynamic_symtab (%p, <ret>)\n", abfd);
#endif
return 0L;
}
/* Get the amount of memory required to hold the dynamic relocs. */
static long
vms_get_dynamic_reloc_upper_bound (bfd * abfd ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_get_dynamic_reloc_upper_bound (%p)\n", abfd);
#endif
return 0L;
}
/* Read in the dynamic relocs. */
static long
vms_canonicalize_dynamic_reloc (bfd * abfd ATTRIBUTE_UNUSED,
arelent **arel ATTRIBUTE_UNUSED,
asymbol **symbols ATTRIBUTE_UNUSED)
{
#if VMS_DEBUG
vms_debug (1, "vms_canonicalize_dynamic_reloc (%p)\n", abfd);
#endif
return 0L;
}
const bfd_target vms_alpha_vec =
{
"vms-alpha", /* Name. */
bfd_target_evax_flavour,
BFD_ENDIAN_LITTLE, /* Data byte order is little. */
BFD_ENDIAN_LITTLE, /* Header byte order is little. */
(HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS
| WP_TEXT | D_PAGED), /* Object flags. */
(SEC_ALLOC | SEC_LOAD | SEC_RELOC
| SEC_READONLY | SEC_CODE | SEC_DATA
| SEC_HAS_CONTENTS | SEC_IN_MEMORY), /* Sect flags. */
0, /* symbol_leading_char. */
' ', /* ar_pad_char. */
15, /* ar_max_namelen. */
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
bfd_getl16, bfd_getl_signed_16, bfd_putl16,
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
bfd_getl16, bfd_getl_signed_16, bfd_putl16,
{_bfd_dummy_target, vms_object_p, /* bfd_check_format. */
vms_archive_p, _bfd_dummy_target},
{bfd_false, vms_mkobject, /* bfd_set_format. */
_bfd_generic_mkarchive, bfd_false},
{bfd_false, vms_write_object_contents, /* bfd_write_contents. */
_bfd_write_archive_contents, bfd_false},
BFD_JUMP_TABLE_GENERIC (vms),
BFD_JUMP_TABLE_COPY (vms),
BFD_JUMP_TABLE_CORE (vms),
BFD_JUMP_TABLE_ARCHIVE (vms),
BFD_JUMP_TABLE_SYMBOLS (vms),
BFD_JUMP_TABLE_RELOCS (vms),
BFD_JUMP_TABLE_WRITE (vms),
BFD_JUMP_TABLE_LINK (vms),
BFD_JUMP_TABLE_DYNAMIC (vms),
NULL,
(PTR) 0
};
const bfd_target vms_vax_vec =
{
"vms-vax", /* Name. */
bfd_target_ovax_flavour,
BFD_ENDIAN_LITTLE, /* Data byte order is little. */
BFD_ENDIAN_LITTLE, /* Header byte order is little. */
(HAS_RELOC | HAS_SYMS /* Object flags. */
| WP_TEXT | D_PAGED
| HAS_LINENO | HAS_DEBUG | HAS_LOCALS),
(SEC_ALLOC | SEC_LOAD | SEC_RELOC
| SEC_READONLY | SEC_CODE | SEC_DATA
| SEC_HAS_CONTENTS | SEC_IN_MEMORY), /* Sect flags. */
0, /* symbol_leading_char */
' ', /* ar_pad_char */
15, /* ar_max_namelen */
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data. */
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Hdrs. */
{_bfd_dummy_target, vms_object_p, /* bfd_check_format. */
vms_archive_p, _bfd_dummy_target},
{bfd_false, vms_mkobject, /* bfd_set_format. */
_bfd_generic_mkarchive, bfd_false},
{bfd_false, vms_write_object_contents, /* bfd_write_contents. */
_bfd_write_archive_contents, bfd_false},
BFD_JUMP_TABLE_GENERIC (vms),
BFD_JUMP_TABLE_COPY (vms),
BFD_JUMP_TABLE_CORE (vms),
BFD_JUMP_TABLE_ARCHIVE (vms),
BFD_JUMP_TABLE_SYMBOLS (vms),
BFD_JUMP_TABLE_RELOCS (vms),
BFD_JUMP_TABLE_WRITE (vms),
BFD_JUMP_TABLE_LINK (vms),
BFD_JUMP_TABLE_DYNAMIC (vms),
NULL,
(PTR) 0
};