From 06e77878ef2b6a57ef92c1691b3aeb668dc248ba Mon Sep 17 00:00:00 2001 From: Alexandre Oliva Date: Mon, 24 Oct 2005 17:51:42 +0000 Subject: gas/ChangeLog: * read.c (potable): Add weakref. (s_weakref): New. * read.h (s_weakref): Declare. * struc-symbol.h (struct symbol): Add sy_weakrefr and sy_weakrefd. * symbols.c (colon): Clear weakrefr. (symbol_find_exact): Rename to, and reimplement in terms of... (symbol_find_exact_noref): ... new function. (symbol_find): Likewise... (symbol_find_noref): ... ditto. (resolve_symbol_value): Resolve weakrefr without setting their values. (S_SET_WEAK): Call hook. (S_GET_VALUE): Follow weakref link. (S_SET_VALUE): Clear weakrefr. (S_IS_WEAK): Follow weakref link. (S_IS_WEAKREFR, S_SET_WEAKREFR, S_CLEAR_WEAKREFR): New. (S_IS_WEAKREFD, S_SET_WEAKREFD, S_CLEAR_WEAKREFD): New. (symbol_set_value_expression, symbol_set_frag): Clear weakrefr. (symbol_mark_used): Follow weakref link. (print_symbol_value_1): Print weak, weakrefr and weakrefd. * symbols.h (symbol_find_noref, symbol_find_exact_noref): Declare. (S_IS_WEAKREFR, S_SET_WEAKREFR, S_CLEAR_WEAKREFR): Declare. (S_IS_WEAKREFD, S_SET_WEAKREFD, S_CLEAR_WEAKREFD): Declare. * write.c (adust_reloc_syms): Follow weakref link. Do not complain if target is undefined. (write_object_file): Likewise. Remove weakrefr symbols. Drop unreferenced weakrefd symbols. * config/obj-coff.c (obj_frob_symbol): Do not force WEAKREFD symbols EXTERNAL. (pecoff_obj_set_weak_hook, pecoff_obj_clear_weak_hook): New. * config/obj-coff.h (obj_set_weak_hook, obj_clear_weak_hook): Define. * doc/as.texinfo: Document weakref. * doc/internals.texi: Document new struct members, internal functions and hooks. gas/testsuite/ChangeLog: * gas/all/weakref1.s, gas/all/weakref1.d: New test. * gas/all/weakref1g.d, gas/all/weakref1l.d: New tests. * gas/all/weakref1u.d, gas/all/weakref1w.d: New tests. * gas/all/weakref2.s, gas/all/weakref3.s: New tests. * gas/all/gas.exp: Run new tests. --- gas/write.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'gas/write.c') diff --git a/gas/write.c b/gas/write.c index a90ee9d..5546b68 100644 --- a/gas/write.c +++ b/gas/write.c @@ -678,13 +678,15 @@ adjust_reloc_syms (bfd *abfd ATTRIBUTE_UNUSED, /* If this symbol is equated to an undefined or common symbol, convert the fixup to being against that symbol. */ - if (symbol_equated_reloc_p (sym)) + if (symbol_equated_reloc_p (sym) + || S_IS_WEAKREFR (sym)) { symbolS *new_sym = symbol_get_value_expression (sym)->X_add_symbol; const char *name = S_GET_NAME (sym); if (!S_IS_COMMON (new_sym) && !TC_FAKE_LABEL (name) + && !S_IS_WEAKREFR (sym) && (!S_IS_EXTERNAL (sym) || S_IS_LOCAL (sym))) as_bad (_("Local symbol `%s' can't be equated to undefined symbol `%s'"), name, S_GET_NAME (new_sym)); @@ -1483,11 +1485,13 @@ write_object_file (void) /* Skip symbols which were equated to undefined or common symbols. */ - if (symbol_equated_reloc_p (symp)) + if (symbol_equated_reloc_p (symp) + || S_IS_WEAKREFR (symp)) { const char *name = S_GET_NAME (symp); if (S_IS_COMMON (symp) && !TC_FAKE_LABEL (name) + && !S_IS_WEAKREFR (symp) && (!S_IS_EXTERNAL (symp) || S_IS_LOCAL (symp))) { expressionS *e = symbol_get_value_expression (symp); @@ -1524,7 +1528,7 @@ write_object_file (void) opposites. Sometimes the former checks flags and the latter examines the name... */ || (!S_IS_EXTERNAL (symp) - && (punt || S_IS_LOCAL (symp)) + && (punt || S_IS_LOCAL (symp) || S_IS_WEAKREFD (symp)) && ! symbol_used_in_reloc_p (symp))) { symbol_remove (symp, &symbol_rootP, &symbol_lastP); -- cgit v1.1