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Added some support for Irix 4 shared libraries.

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* ecoff.c (ecoff_new_section_hook): Set SEC_SHARED_LIBRARY for a
	.lib section.
	(ecoff_sec_to_styp_flags): Set SEC_SHARED_LIBRARY if
	STYP_ECOFF_LIB bit is set.
	(ecoff_compute_section_file_positions): Round the contents of a
	.lib section up to the next page boundary.
	(ecoff_set_section_contents): If we see a .lib section, increment
	the vma by one to count the number of shared libraries we have.
	(ecoff_write_object_contents): Don't crash if we see a
	STYP_ECOFF_LIB section, and don't adjust text_start or data_start
	or bss_size either.
This commit is contained in:
Ian Lance Taylor 1994-03-31 21:38:23 +00:00
parent dee4d3476b
commit f8ee1ebba0
2 changed files with 42 additions and 2 deletions
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13
bfd/ChangeLog
View File

@ -1,5 +1,18 @@
Thu Mar 31 11:52:15 1994 Ian Lance Taylor (ian@tweedledumb.cygnus.com)
Added some support for Irix 4 shared libraries.
* ecoff.c (ecoff_new_section_hook): Set SEC_SHARED_LIBRARY for a
.lib section.
(ecoff_sec_to_styp_flags): Set SEC_SHARED_LIBRARY if
STYP_ECOFF_LIB bit is set.
(ecoff_compute_section_file_positions): Round the contents of a
.lib section up to the next page boundary.
(ecoff_set_section_contents): If we see a .lib section, increment
the vma by one to count the number of shared libraries we have.
(ecoff_write_object_contents): Don't crash if we see a
STYP_ECOFF_LIB section, and don't adjust text_start or data_start
or bss_size either.
* coffcode.h (CALC_ADDEND): Change to fetch original symbol value
from original BFD, rather than using value of current BFD symbol.
Needed for new linker.

31
bfd/ecoff.c
View File

@ -178,6 +178,11 @@ ecoff_new_section_hook (abfd, section)
else if (strcmp (section->name, _BSS) == 0
|| strcmp (section->name, _SBSS) == 0)
section->flags |= SEC_ALLOC;
else if (strcmp (section->name, _LIB) == 0)
{
/* An Irix 4 shared libary. */
section->flags |= SEC_SHARED_LIBRARY;
}
else if (strcmp (section->name, REGINFO) == 0)
{
/* Setting SEC_SHARED_LIBRARY should make the linker leave the
@ -326,6 +331,8 @@ ecoff_sec_to_styp_flags (name, flags)
styp = STYP_PDATA;
else if (strcmp (name, _XDATA) == 0)
styp = STYP_XDATA;
else if (strcmp (name, _LIB) == 0)
styp = STYP_ECOFF_LIB;
else if (flags & SEC_CODE)
styp = STYP_TEXT;
else if (flags & SEC_DATA)
@ -398,6 +405,10 @@ ecoff_styp_to_sec_flags (abfd, hdr)
{
sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC | SEC_READONLY;
}
else if (styp_flags & STYP_ECOFF_LIB)
{
sec_flags |= SEC_SHARED_LIBRARY;
}
else
{
sec_flags |= SEC_ALLOC | SEC_LOAD;
@ -2250,6 +2261,15 @@ ecoff_compute_section_file_positions (abfd)
sofar = (sofar + round - 1) &~ (round - 1);
first_data = false;
}
else if (strcmp (current->name, _LIB) == 0)
{
const bfd_vma round = ecoff_backend (abfd)->round;
/* On Irix 4, the location of contents of the .lib section
from a shared library section is also rounded up to a
page boundary. */
sofar = (sofar + round - 1) &~ (round - 1);
}
/* Align the sections in the file to the same boundary on
which they are aligned in virtual memory. */
@ -2344,6 +2364,12 @@ ecoff_set_section_contents (abfd, section, location, offset, count)
if (abfd->output_has_begun == false)
ecoff_compute_section_file_positions (abfd);
/* If this is a .lib section, bump the vma address so that it winds
up being the number of .lib sections output. This is right for
Irix 4. Ian Taylor <ian@cygnus.com>. */
if (strcmp (section->name, _LIB) == 0)
++section->vma;
if (count == 0)
return true;
@ -2568,8 +2594,7 @@ ecoff_write_object_contents (abfd)
strncpy (section.s_name, current->name, sizeof section.s_name);
/* FIXME: is this correct for shared libraries? I think it is
but I have no platform to check. Ian Lance Taylor. */
/* This seems to be correct for Irix 4 shared libraries. */
vma = bfd_get_section_vma (abfd, current);
if (strcmp (current->name, _LIB) == 0)
section.s_vaddr = 0;
@ -2643,6 +2668,8 @@ ecoff_write_object_contents (abfd)
else if ((section.s_flags & STYP_BSS) != 0
|| (section.s_flags & STYP_SBSS) != 0)
bss_size += bfd_get_section_size_before_reloc (current);
else if ((section.s_flags & STYP_ECOFF_LIB) != 0)
/* Do nothing */ ;
else
abort ();
}