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2010-05-26 Tristan Gingold <gingold@adacore.com>

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* vms-alpha.c: Update comments.
	(alpha_vms_write_exec): Set lnkflags.  Write the GST.
	(alpha_vms_link_output_symbol): New function.
	(alpha_vms_bfd_final_link): Generate the VMS symbol table.
	Set dst_section private field.
	(alpha_vms_bfd_final_link): Remove code that set dst_section.
This commit is contained in:
Tristan Gingold 2010-05-26 08:55:22 +00:00
parent 65077aa815
commit f9eeb9c926
2 changed files with 169 additions and 8 deletions
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9
bfd/ChangeLog
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@ -1,3 +1,12 @@
2010-05-26 Tristan Gingold <gingold@adacore.com>
* vms-alpha.c: Update comments.
(alpha_vms_write_exec): Set lnkflags. Write the GST.
(alpha_vms_link_output_symbol): New function.
(alpha_vms_bfd_final_link): Generate the VMS symbol table.
Set dst_section private field.
(alpha_vms_bfd_final_link): Remove code that set dst_section.
2010-05-26 Tristan Gingold <gingold@adacore.com>
* bfdio.c: Declare and define _bfd_memory_iovec.

168
bfd/vms-alpha.c
View File

@ -21,15 +21,16 @@
MA 02110-1301, USA. */
/* TODO:
o DMT
o overlayed sections
o PIC
o Generation of shared image
o Generation of GST in image
o Relocation optimizations
o EISD for the stack
o Vectors isect
o 64 bits sections
o Entry point
o LIB$INITIALIZE
o protected sections (for messages)
...
*/
@ -1631,7 +1632,8 @@ alpha_vms_sym_to_ctxt (struct alpha_vms_link_hash_entry *h)
return RELC_SHR_BASE + PRIV2 (h->sym->owner, shr_index);
else
{
/* Can this happen ? I'd like to see an example. */
/* Can this happen (non-relocatable symg) ? I'd like to see
an example. */
abort ();
}
}
@ -2934,6 +2936,8 @@ alpha_vms_write_exec (bfd *abfd)
struct vms_internal_eisd_map *eisd;
asection *dst;
asection *dmt;
file_ptr gst_filepos = 0;
unsigned int lnkflags = 0;
/* Build the EIHD. */
PRIV (file_pos) = EIHD__C_LENGTH;
@ -2962,7 +2966,6 @@ alpha_vms_write_exec (bfd *abfd)
bfd_putl32 ((sizeof (eihd) + VMS_BLOCK_SIZE - 1) / VMS_BLOCK_SIZE,
eihd.hdrblkcnt);
bfd_putl32 (0, eihd.lnkflags);
bfd_putl32 (0, eihd.ident);
bfd_putl32 (0, eihd.sysver);
@ -3115,9 +3118,17 @@ alpha_vms_write_exec (bfd *abfd)
if (dmt != NULL)
{
lnkflags |= EIHD__M_DBGDMT;
bfd_putl32 ((dmt->filepos / VMS_BLOCK_SIZE) + 1, eihs->dmtvbn);
bfd_putl32 (dmt->size, eihs->dmtsize);
}
if (PRIV (gsd_sym_count) != 0)
{
alpha_vms_file_position_block (abfd);
gst_filepos = PRIV (file_pos);
bfd_putl32 ((gst_filepos / VMS_BLOCK_SIZE) + 1, eihs->gstvbn);
bfd_putl32 ((PRIV (gsd_sym_count) + 4) / 5 + 4, eihs->gstsize);
}
}
/* Write EISD in hdr. */
@ -3127,6 +3138,7 @@ alpha_vms_write_exec (bfd *abfd)
(eisd, (struct vms_eisd *)((char *)&eihd + eisd->file_pos));
/* Write first block. */
bfd_putl32 (lnkflags, eihd.lnkflags);
if (bfd_bwrite (&eihd, sizeof (eihd), abfd) != sizeof (eihd))
return FALSE;
@ -3178,6 +3190,68 @@ alpha_vms_write_exec (bfd *abfd)
}
}
/* Write GST. */
if (gst_filepos != 0)
{
struct vms_rec_wr *recwr = &PRIV (recwr);
unsigned int i;
_bfd_vms_write_emh (abfd);
_bfd_vms_write_lmn (abfd, "GNU LD");
/* PSC for the absolute section. */
_bfd_vms_output_begin (recwr, EOBJ__C_EGSD);
_bfd_vms_output_long (recwr, 0);
_bfd_vms_output_begin_subrec (recwr, EGSD__C_PSC);
_bfd_vms_output_short (recwr, 0);
_bfd_vms_output_short (recwr, EGPS__V_PIC | EGPS__V_LIB | EGPS__V_RD);
_bfd_vms_output_long (recwr, 0);
_bfd_vms_output_counted (recwr, ".$$ABS$$.");
_bfd_vms_output_end_subrec (recwr);
_bfd_vms_output_end (abfd, recwr);
for (i = 0; i < PRIV (gsd_sym_count); i++)
{
struct vms_symbol_entry *sym = PRIV (syms)[i];
char *hash;
bfd_vma val;
bfd_vma ep;
if ((i % 5) == 0)
{
_bfd_vms_output_alignment (recwr, 8);
_bfd_vms_output_begin (recwr, EOBJ__C_EGSD);
_bfd_vms_output_long (recwr, 0);
}
_bfd_vms_output_begin_subrec (recwr, EGSD__C_SYMG);
_bfd_vms_output_short (recwr, 0); /* Data type, alignment. */
_bfd_vms_output_short (recwr, sym->flags);
if (sym->code_section)
ep = alpha_vms_get_sym_value (sym->code_section, sym->code_value);
else
{
BFD_ASSERT (sym->code_value == 0);
ep = 0;
}
val = alpha_vms_get_sym_value (sym->section, sym->value);
_bfd_vms_output_quad
(recwr, sym->typ == EGSD__C_SYMG ? sym->symbol_vector : val);
_bfd_vms_output_quad (recwr, ep);
_bfd_vms_output_quad (recwr, val);
_bfd_vms_output_long (recwr, 0);
hash = _bfd_vms_length_hash_symbol (abfd, sym->name, EOBJ__C_SYMSIZ);
_bfd_vms_output_counted (recwr, hash);
_bfd_vms_output_end_subrec (recwr);
if ((i % 5) == 4)
_bfd_vms_output_end (abfd, recwr);
}
if ((i % 5) != 0)
_bfd_vms_output_end (abfd, recwr);
if (!_bfd_vms_write_eeom (abfd))
return FALSE;
}
return TRUE;
}
@ -8422,6 +8496,80 @@ alpha_vms_build_fixups (struct bfd_link_info *info)
return TRUE;
}
/* Called by bfd_link_hash_traverse to fill the symbol table.
Return FALSE in case of failure. */
static bfd_boolean
alpha_vms_link_output_symbol (struct bfd_link_hash_entry *hc, void *infov)
{
struct bfd_link_info *info = (struct bfd_link_info *)infov;
struct alpha_vms_link_hash_entry *h = (struct alpha_vms_link_hash_entry *)hc;
struct vms_symbol_entry *sym;
switch (h->root.type)
{
case bfd_link_hash_new:
case bfd_link_hash_undefined:
abort ();
case bfd_link_hash_undefweak:
return TRUE;
case bfd_link_hash_defined:
case bfd_link_hash_defweak:
{
asection *sec = h->root.u.def.section;
/* FIXME: this is certainly a symbol from a dynamic library. */
if (bfd_is_abs_section (sec))
return TRUE;
if (sec->owner->flags & DYNAMIC)
return TRUE;
}
break;
case bfd_link_hash_common:
break;
case bfd_link_hash_indirect:
case bfd_link_hash_warning:
return TRUE;
}
/* Do not write not kept symbols. */
if (info->strip == strip_some
&& bfd_hash_lookup (info->keep_hash, h->root.root.string,
FALSE, FALSE) != NULL)
return TRUE;
if (h->sym == NULL)
{
/* This symbol doesn't come from a VMS object. So we suppose it is
a data. */
int len = strlen (h->root.root.string);
sym = (struct vms_symbol_entry *)bfd_zalloc (info->output_bfd,
sizeof (*sym) + len);
if (sym == NULL)
abort ();
sym->namelen = len;
memcpy (sym->name, h->root.root.string, len);
sym->name[len] = 0;
sym->owner = info->output_bfd;
sym->typ = EGSD__C_SYMG;
sym->data_type = 0;
sym->flags = EGSY__V_DEF | EGSY__V_REL;
sym->symbol_vector = h->root.u.def.value;
sym->section = h->root.u.def.section;
sym->value = h->root.u.def.value;
}
else
sym = h->sym;
if (!add_symbol_entry (info->output_bfd, sym))
return FALSE;
return TRUE;
}
static bfd_boolean
alpha_vms_bfd_final_link (bfd *abfd, struct bfd_link_info *info)
{
@ -8476,6 +8624,11 @@ alpha_vms_bfd_final_link (bfd *abfd, struct bfd_link_info *info)
}
#endif
/* Generate the symbol table. */
BFD_ASSERT (PRIV (syms) == NULL);
if (info->strip != strip_all)
bfd_link_hash_traverse (info->hash, alpha_vms_link_output_symbol, info);
/* Find the entry point. */
if (bfd_get_start_address (abfd) == 0)
{
@ -8548,11 +8701,13 @@ alpha_vms_bfd_final_link (bfd *abfd, struct bfd_link_info *info)
alpha_vms_link_hash (info)->base_addr = base_addr;
/* Create the DMT section, if necessary. */
dst = PRIV (dst_section);
BFD_ASSERT (PRIV (dst_section) == NULL);
dst = bfd_get_section_by_name (abfd, "$DST$");
if (dst != NULL && dst->size == 0)
dst = NULL;
if (dst != NULL)
{
PRIV (dst_section) = dst;
dmt = bfd_make_section_anyway_with_flags
(info->output_bfd, "$DMT$",
SEC_DEBUGGING | SEC_HAS_CONTENTS | SEC_LINKER_CREATED);
@ -8819,9 +8974,6 @@ vms_new_section_hook (bfd * abfd, asection *section)
if (section->used_by_bfd == NULL)
return FALSE;
if (strcmp (bfd_get_section_name (abfd, section), "$DST$") == 0)
PRIV (dst_section) = section;
/* Create the section symbol. */
return _bfd_generic_new_section_hook (abfd, section);
}