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* ecoff.c (_bfd_ecoff_write_armap): give the symtab element a

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reasonable mode until "ar x" is smart enough to skip it (fixes
	gcc/libgcc.a builds on mips-ecoff targets
	* coffcode.h (styp_to_sec_flags): Explain how COMDATs are supposed
	to work.  Hack to support MS import libraries, which use different
	COMDAT types than GNU.
	(coff_slurp_symbol_table): C_SECTION symbols are local; they refer
	to implied zero-length sections (see peicode below)
	* coffgen.c (coff_get_normalized_symtab): Properly read long MS
	filename symbols, which use one *or more* auxents.
	* coffswap.h (coff_swap_aux_in): ditto
	* peicode.h (coff_swap_sym_in): Build the implied zero-length
	sections
This commit is contained in:
DJ Delorie
1999-05-11 21:05:44 +00:00
parent 69f868fa5d
commit ec0ef80e9f
6 changed files with 125 additions and 4 deletions
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28
bfd/coffcode.h
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@@ -588,6 +588,12 @@ styp_to_sec_flags (abfd, hdr, name)
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 */
if (_bfd_coff_get_external_symbols (abfd))
{
bfd_byte *esym, *esymend;
@@ -629,10 +635,23 @@ styp_to_sec_flags (abfd, hdr, name)
isym.n_type, isym.n_sclass,
0, isym.n_numaux, (PTR) &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 */
switch (aux.x_scn.x_comdat)
{
case IMAGE_COMDAT_SELECT_NODUPLICATES:
#if 0
sec_flags |= SEC_LINK_DUPLICATES_ONE_ONLY;
#else
sec_flags &= ~SEC_LINK_ONCE;
#endif
break;
default:
@@ -649,8 +668,12 @@ styp_to_sec_flags (abfd, hdr, name)
break;
case IMAGE_COMDAT_SELECT_ASSOCIATIVE:
#if 0
/* FIXME: This is not currently implemented. */
sec_flags |= SEC_LINK_DUPLICATES_DISCARD;
#else
sec_flags &= ~SEC_LINK_ONCE;
#endif
break;
}
@@ -3581,6 +3604,11 @@ coff_slurp_symbol_table (abfd)
#ifdef COFF_WITH_PE
if (src->u.syment.n_sclass == C_NT_WEAK)
dst->symbol.flags = BSF_WEAK;
if (src->u.syment.n_sclass == C_SECTION
&& src->u.syment.n_scnum > 0)
{
dst->symbol.flags = BSF_LOCAL;
}
#endif
if (src->u.syment.n_sclass == C_WEAKEXT)