{
bfd_byte *esymstart, *esym, *esymend;
- /* Unfortunately, the PE format stores essential information in
- the symbol table, of all places. We need to extract that
- information now, so that objdump and the linker will know how
- to handle the section without worrying about the symbols. We
- can't call slurp_symtab, because the linker doesn't want the
- swapped symbols. */
+ /* Unfortunately, the PE format stores essential information in the
+ symbol table, of all places. We need to extract that information
+ now, so that objdump and the linker will know how to handle the
+ section without worrying about the symbols. We can't call
+ slurp_symtab, because the linker doesn't want the swapped symbols. */
/* COMDAT sections are special. The first symbol is the section
symbol, which tells what kind of COMDAT section it is. The
- second symbol is the "comdat symbol" - the one with the
- unique name. GNU uses the section symbol for the unique
- name; MS uses ".text" for every comdat section. Sigh. - DJ */
+ second symbol is the "comdat symbol" - the one with the unique
+ name. GNU uses the section symbol for the unique name; MS uses
+ ".text" for every comdat section. Sigh. - DJ. */
- /* This is not mirrored in sec_to_styp_flags(), but there
- doesn't seem to be a need to, either, and it would at best be
- rather messy. */
+ /* This is not mirrored in sec_to_styp_flags(), but there doesn't
+ seem to be a need to, either, and it would at best be rather messy. */
if (! _bfd_coff_get_external_symbols (abfd))
return true;
bfd_coff_swap_sym_in (abfd, esym, &isym);
- /* According to the MSVC documentation, the first
- TWO entries with the section # are both of
- interest to us. The first one is the "section
- symbol" (section name). The second is the comdat
- symbol name. Here, we've found the first
- qualifying entry; we distinguish it from the
- second with a state flag.
-
- In the case of gas-generated (at least until that
- is fixed) .o files, it isn't necessarily the
- second one. It may be some other later symbol.
-
- Since gas also doesn't follow MS conventions and
- emits the section similar to .text$<name>, where
- <something> is the name we're looking for, we
- distinguish the two as follows:
-
- If the section name is simply a section name (no
- $) we presume it's MS-generated, and look at
- precisely the second symbol for the comdat name.
- If the section name has a $, we assume it's
- gas-generated, and look for <something> (whatever
+ /* According to the MSVC documentation, the first TWO entries
+ with the section # are both of interest to us. The first one
+ is the "section symbol" (section name). The second is the
+ comdat symbol name. Here, we've found the first qualifying
+ entry; we distinguish it from the second with a state flag.
+
+ In the case of gas-generated (at least until that is fixed)
+ .o files, it isn't necessarily the second one. It may be
+ some other later symbol.
+
+ Since gas also doesn't follow MS conventions and emits the
+ section similar to .text$<name>, where <something> is the
+ name we're looking for, we distinguish the two as follows:
+
+ If the section name is simply a section name (no $) we
+ presume it's MS-generated, and look at precisely the second
+ symbol for the comdat name. If the section name has a $, we
+ assume it's gas-generated, and look for <something> (whatever
follows the $) as the comdat symbol. */
/* All 3 branches use this. */
else
{
/* PR 17512: file: e2cfe54f. */
- if (esym + bfd_coff_symesz (abfd) >= esymend)
+ if (esym + isym.n_numaux * bfd_coff_symesz (abfd) >= esymend)
{
/* xgettext:c-format */
- _bfd_error_handler (_ ("%pB: warning: no symbol for"
- " section '%s' found"),
+ _bfd_error_handler (_("%pB: warning: no symbol for"
+ " section '%s' found"),
abfd, symname);
continue;
}
isym.n_numaux, &aux);
}
- /* FIXME: Microsoft uses NODUPLICATES and
- ASSOCIATIVE, but gnu uses ANY and
- SAME_SIZE. Unfortunately, gnu doesn't do
- the comdat symbols right. So, until we can
- fix it to do the right thing, we are
- temporarily disabling comdats for the MS
- types (they're used in DLLs and C++, but we
- don't support *their* C++ libraries anyway
- - DJ. */
-
- /* Cygwin does not follow the MS style, and
- uses ANY and SAME_SIZE where NODUPLICATES
- and ASSOCIATIVE should be used. For
- Interix, we just do the right thing up
+ /* FIXME: Microsoft uses NODUPLICATES and ASSOCIATIVE, but
+ gnu uses ANY and SAME_SIZE. Unfortunately, gnu doesn't
+ do the comdat symbols right. So, until we can fix it to
+ do the right thing, we are temporarily disabling comdats
+ for the MS types (they're used in DLLs and C++, but we
+ don't support *their* C++ libraries anyway - DJ. */
+
+ /* Cygwin does not follow the MS style, and uses ANY and
+ SAME_SIZE where NODUPLICATES and ASSOCIATIVE should be
+ used. For Interix, we just do the right thing up
front. */
switch (aux.x_scn.x_comdat)
sec_flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS;
break;
- /* debug$S gets this case; other
- implications ??? */
+ /* debug$S gets this case; other implications ??? */
- /* There may be no symbol... we'll search
- the whole table... Is this the right
- place to play this game? Or should we do
- it when reading it in. */
+ /* There may be no symbol. We'll search the whole
+ table. Is this the right place to play this game?
+ Or should we do it when reading it in? */
case IMAGE_COMDAT_SELECT_ASSOCIATIVE:
#ifdef STRICT_PE_FORMAT
/* FIXME: This is not currently implemented. */
break;
default: /* 0 means "no symbol" */
- /* debug$F gets this case; other
- implications ??? */
+ /* debug$F gets this case; other implications ??? */
sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
break;
}
continue;
}
}
- /* MSVC mode: the lexically second symbol (or
- drop through from the above). */
- /* This must the second symbol with the
- section #. It is the actual symbol name.
- Intel puts the two adjacent, but Alpha (at
- least) spreads them out. */
+ /* MSVC mode: the lexically second symbol (or drop through
+ from the above). */
+ /* This must the second symbol with the section #. It is
+ the actual symbol name. Intel puts the two adjacent, but
+ Alpha (at least) spreads them out. */
entry->comdat_symbol = (esym - esymstart) / bfd_coff_symesz (abfd);
entry->comdat_name = bfd_strdup (symname);
= find_flags (pe_data (abfd)->comdat_hash, section->target_index);
if (found != NULL)
{
-
struct internal_syment isym = found->isym;
- /* If it isn't the stuff we're expecting, die;
- The MS documentation is vague, but it
- appears that the second entry serves BOTH
- as the comdat symbol and the defining
- symbol record (either C_STAT or C_EXT,
- possibly with an aux entry with debug
- information if it's a function.) It
- appears the only way to find the second one
- is to count. (On Intel, they appear to be
- adjacent, but on Alpha, they have been
- found separated.)
-
- Here, we think we've found the first one,
- but there's some checking we can do to be
- sure. */
+ /* If it isn't the stuff we're expecting, die; The MS
+ documentation is vague, but it appears that the second entry
+ serves BOTH as the comdat symbol and the defining symbol
+ record (either C_STAT or C_EXT, possibly with an aux entry
+ with debug information if it's a function.) It appears the
+ only way to find the second one is to count. (On Intel, they
+ appear to be adjacent, but on Alpha, they have been found
+ separated.)
+
+ Here, we think we've found the first one, but there's some
+ checking we can do to be sure. */
if (! ((isym.n_sclass == C_STAT || isym.n_sclass == C_EXT)
&& BTYPE (isym.n_type) == T_NULL && isym.n_value == 0))
{
/* Malformed input files can trigger this test.
cf PR 21781. */
- _bfd_error_handler (
- _ ("%pB: error: unexpected symbol '%s' in COMDAT section"), abfd,
- found->symname);
+ _bfd_error_handler
+ (_("%pB: error: unexpected symbol '%s' in COMDAT section"),
+ abfd, found->symname);
return false;
}
- /* FIXME LATER: MSVC generates section names
- like .text for comdats. Gas generates
- names like .text$foo__Fv (in the case of a
- function). See comment above for more. */
+ /* FIXME LATER: MSVC generates section names like .text for
+ comdats. Gas generates names like .text$foo__Fv (in the case
+ of a function). See comment above for more. */
if (isym.n_sclass == C_STAT && strcmp (name, found->symname) != 0)
/* xgettext:c-format */
- _bfd_error_handler (_ ("%pB: warning: COMDAT symbol '%s'"
- " does not match section name '%s'"),
+ _bfd_error_handler (_("%pB: warning: COMDAT symbol '%s'"
+ " does not match section name '%s'"),
abfd, found->symname, name);
if (found->comdat_symbol != -1)
projects / thirdparty / binutils-gdb.git / commitdiff
