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Do not change an existing section's attributes if a flags argument isn't 

present.  Warn if the new attributes don't match the section's current
attributes.
This commit is contained in:
Nick Clifton 2000-06-29 23:54:13 +00:00
parent fbe1e41fe2
commit c99004323d
2 changed files with 38 additions and 12 deletions
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9
gas/ChangeLog
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@ -1,3 +1,12 @@
2000-06-29 Mark Elbrecht <snowball3@bigfoot.com>
* config/obj-coff.c (obj_coff_setcion) [BFD_ASSEMBLER]: If the
flags argument is not present, don't change an existing section's
section's attributes. If the flags argument is present, warn if the
attributes don't match the section's current attributes. When
long section names are supported, set SEC_LINK_ONCE and
SEC_LINK_DUPLICATES_DISCARD for a new .gnu.linkonce section.
Thu Jun 29 21:30:00 2000 Hans-Peter Nilsson <hp@axis.com>
* config/obj-aout.c (obj_aout_type): Do not ignore for undefined

41
gas/config/obj-coff.c
View File

@ -652,7 +652,7 @@ static void
obj_coff_endef (ignore)
int ignore ATTRIBUTE_UNUSED;
{
symbolS *symbolP;
symbolS *symbolP = NULL;
/* DIM BUG FIX sac@cygnus.com */
dim_index = 0;
@ -1353,7 +1353,7 @@ obj_coff_section (ignore)
char c;
char *name;
unsigned int exp;
flagword flags;
flagword flags, oldflags;
asection *sec;
if (flag_mri)
@ -1375,7 +1375,7 @@ obj_coff_section (ignore)
SKIP_WHITESPACE ();
exp = 0;
flags = SEC_LOAD;
flags = SEC_NO_FLAGS;
if (*input_line_pointer == ',')
{
@ -1420,18 +1420,35 @@ obj_coff_section (ignore)
sec = subseg_new (name, (subsegT) exp);
if (flags != SEC_NO_FLAGS)
oldflags = bfd_get_section_flags (stdoutput, sec);
if (oldflags == SEC_NO_FLAGS)
{
flagword oldflags;
oldflags = bfd_get_section_flags (stdoutput, sec);
oldflags &= SEC_LINK_ONCE | SEC_LINK_DUPLICATES;
flags |= oldflags;
/* Set section flags for a new section just created by subseg_new.
Provide a default if no flags were parsed. */
if (flags == SEC_NO_FLAGS)
flags = SEC_LOAD;
#ifdef COFF_LONG_SECTION_NAMES
/* Add SEC_LINK_ONCE and SEC_LINK_DUPLICATES_DISCARD to .gnu.linkonce
sections so adjust_reloc_syms in write.c will correctly handle
relocs which refer to non-local symbols in these sections. */
if (strncmp (name, ".gnu.linkonce", sizeof(".gnu.linkonce") - 1) == 0)
flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
#endif
if (! bfd_set_section_flags (stdoutput, sec, flags))
as_warn (_("error setting flags for \"%s\": %s"),
bfd_section_name (stdoutput, sec),
bfd_errmsg (bfd_get_error ()));
as_warn (_("error setting flags for \"%s\": %s"),
bfd_section_name (stdoutput, sec),
bfd_errmsg (bfd_get_error ()));
}
else if (flags != SEC_NO_FLAGS)
{
/* This section's attributes have already been set. Warn if the
attributes don't match. */
flagword matchflags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE
| SEC_DATA | SEC_SHARED;
if ((flags ^ oldflags) & matchflags)
as_warn (_("Ignoring changed section attributes for %s"), name);
}
demand_empty_rest_of_line ();