+2005-11-17 Jan Beulich <jbeulich@novell.com>
+
+
+ * symbols.h (S_CLEAR_VOLATILE): Declare.
+ * symbols.c (colon): Also accept redefinable symbols for
+ redefinition. Clone them before modifying.
+ (S_CLEAR_VOLATILE): Define.
+ * cond.c (s_ifdef): Also test for equated symbols.
+ * read.c (s_comm_internal): Also exclude non-redefinable
+ equated symbols. Clone redefinable ones before modifying.
+ (s_weakref): Clone redefinable symbols before modifying.
+ * doc/internals.texi: Document sy_volatile, sy_forward_ref,
+ S_IS_VOLATILE, S_SET_VOLATILE, S_CLEAR_VOLATILE,
+ S_IS_FORWARD_REF, and S_SET_FORWARD_REF.
+
2005-11-16 Alan Modra <amodra@bigpond.net.au>
* config/tc-hppa.c (pa_comm): Set bfd_com_section segment.
considered to be undefined. */
is_defined =
symbolP != NULL
- && S_IS_DEFINED (symbolP)
+ && (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP))
&& S_GET_SEGMENT (symbolP) != reg_section;
cframe.ignoring = ! (test_defined ^ is_defined);
Whether the symbol is an MRI common symbol created by the @code{COMMON}
pseudo-op when assembling in MRI mode.
+@item sy_volatile
+Whether the symbol can be re-defined.
+
+@item sy_forward_ref
+Whether the symbol's value must only be evaluated upon use.
+
@item sy_weakrefr
Whether the symbol is a @code{weakref} alias to another symbol.
Return non-zero if the symbol was aliased by a @code{weakref} alias and has not
had any strong references.
+@item S_IS_VOLATILE
+@cindex S_IS_VOLATILE
+Return non-zero if the symbol may be re-defined. Such symbols get created by
+the @code{=} operator, @code{equ}, or @code{set}.
+
+@item S_IS_FORWARD_REF
+@cindex S_IS_FORWARD_REF
+Return non-zero if the symbol is a forward reference, that is its value must
+only be determined upon use.
+
@item S_IS_COMMON
@cindex S_IS_COMMON
Return non-zero if this is a common symbol. Common symbols are sometimes
whenever the symbol is looked up, as part of a direct reference or a
definition, but not as part of a @code{weakref} directive.
+@item S_SET_VOLATILE
+@cindex S_SET_VOLATILE
+Indicate that the symbol may be re-defined.
+
+@item S_CLEAR_VOLATILE
+@cindex S_CLEAR_VOLATILE
+Indicate that the symbol may no longer be re-defined.
+
+@item S_SET_FORWARD_REF
+@cindex S_SET_FORWARD_REF
+Indicate that the symbol is a forward reference, that is its value must only
+be determined upon use.
+
@item S_GET_TYPE
@item S_GET_DESC
@item S_GET_OTHER
*p = 0;
symbolP = symbol_find_or_make (name);
- if (S_IS_DEFINED (symbolP) && !S_IS_COMMON (symbolP))
+ if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP))
+ && !S_IS_COMMON (symbolP))
{
- symbolP = NULL;
- as_bad (_("symbol `%s' is already defined"), name);
- *p = c;
- ignore_rest_of_line ();
- goto out;
+ if (!S_IS_VOLATILE (symbolP))
+ {
+ symbolP = NULL;
+ as_bad (_("symbol `%s' is already defined"), name);
+ *p = c;
+ ignore_rest_of_line ();
+ goto out;
+ }
+ /* This could be avoided when the symbol wasn't used so far, but
+ the comment in struc-symbol.h says this flag isn't reliable. */
+ if (1 || !symbol_used_p (symbolP))
+ symbolP = symbol_clone (symbolP, 1);
+ S_SET_SEGMENT (symbolP, undefined_section);
+ S_SET_VALUE (symbolP, 0);
+ symbol_set_frag (symbolP, &zero_address_frag);
+ S_CLEAR_VOLATILE (symbolP);
}
size = S_GET_VALUE (symbolP);
if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP))
{
- as_bad (_("symbol `%s' is already defined"), name);
- *end_name = delim;
- ignore_rest_of_line ();
- return;
+ if(!S_IS_VOLATILE (symbolP))
+ {
+ as_bad (_("symbol `%s' is already defined"), name);
+ *end_name = delim;
+ ignore_rest_of_line ();
+ return;
+ }
+ /* This could be avoided when the symbol wasn't used so far, but
+ the comment in struc-symbol.h says this flag isn't reliable. */
+ if (1 || !symbol_used_p (symbolP))
+ symbolP = symbol_clone (symbolP, 1);
+ S_CLEAR_VOLATILE (symbolP);
}
*end_name = delim;
locsym->lsy_value = frag_now_fix ();
}
else if (!(S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP))
- || S_IS_COMMON (symbolP))
+ || S_IS_COMMON (symbolP)
+ || S_IS_VOLATILE (symbolP))
{
+ if (S_IS_VOLATILE (symbolP)
+ /* This could be avoided when the symbol wasn't used so far, but
+ the comment in struc-symbol.h says this flag isn't reliable. */
+ && (1 || !symbol_used_p (symbolP)))
+ {
+ symbolP = symbol_clone (symbolP, 1);
+ S_SET_VALUE (symbolP, 0);
+ S_CLEAR_VOLATILE (symbolP);
+ }
if (S_GET_VALUE (symbolP) == 0)
{
symbolP->sy_frag = frag_now;
if (!(frag_now == symbolP->sy_frag
&& S_GET_VALUE (symbolP) == frag_now_fix ()
&& S_GET_SEGMENT (symbolP) == now_seg))
- as_bad (_("symbol `%s' is already defined"), sym_name);
+ {
+ as_bad (_("symbol `%s' is already defined"), sym_name);
+ symbolP = symbol_clone (symbolP, 0);
+ }
}
}
}
void
+S_CLEAR_VOLATILE (symbolS *s)
+{
+ if (!LOCAL_SYMBOL_CHECK (s))
+ s->sy_volatile = 0;
+}
+
+void
S_SET_FORWARD_REF (symbolS *s)
{
if (LOCAL_SYMBOL_CHECK (s))
extern void S_CLEAR_WEAKREFD (symbolS *);
extern void S_SET_THREAD_LOCAL (symbolS *);
extern void S_SET_VOLATILE (symbolS *);
+extern void S_CLEAR_VOLATILE (symbolS *);
extern void S_SET_FORWARD_REF (symbolS *);
#ifndef WORKING_DOT_WORD
+2005-11-17 Jan Beulich <jbeulich@novell.com>
+
+ * gas/all/cond.s: Also check ifdef works on equates and
+ commons.
+ * gas/all/cond.l: Adjust.
+ * gas/all/redef2.s: Also test redefining equate to label.
+ * gas/all/redef2.d: Adjust.
+ * gas/all/redef3.[sd]: New.
+ * gas/all/redef4.s: New.
+ * gas/all/redef5.s: New.
+ * gas/elf/redef.s: New, copied from original gas/all/redef2.s.
+ * gas/elf/redef.d: Remove #source.
+ * gas/all/gas.exp: Remove exclusion of iq2000-*-* from and
+ adjust xfails for redefinition tests. Run new tests. Exclude
+ alpha*-*-*, mips*-*-*, *c54x*-*-* from weakref tests.
+
2005-11-16 Richard Henderson <rth@redhat.com>
* gas/all/weakref1.s: Use "=" instead of ".set" for equivalence.
29[ ]+.else
31[ ]+.endif
[ ]*[1-9][0-9]*[ ]+
+[ ]*[1-9][0-9]*[ ]+\.comm[ ]+c,[ ]*1[ ]*
+[ ]*[1-9][0-9]*[ ]+\.ifndef[ ]+c[ ]*
+[ ]*[1-9][0-9]*[ ]+\.endif[ ]*
+[ ]*[1-9][0-9]*[ ]+
[ ]*[1-9][0-9]*[ ]+\.equiv[ ]+x,[ ]*y[ ]*
+[ ]*[1-9][0-9]*[ ]+\.ifndef[ ]+x[ ]*
+[ ]*[1-9][0-9]*[ ]+\.endif[ ]*
[ ]*[1-9][0-9]*[ ]+\.equiv[ ]+y,[ ]*0[ ]*
[ ]*[1-9][0-9]*[ ]+\.if[ ]+x[ ]*
[ ]*[1-9][0-9]*[ ]+\.elseif[ ]+x[ ]*
.long 9
.endif
+ .comm c, 1
+ .ifndef c
+ .err
+ .endif
+
.equiv x, y
+ .ifndef x
+ .err
+ .endif
.equiv y, 0
.if x
.err
# .set works differently on some targets.
case $target_triplet in {
{ alpha*-*-* } { }
- { iq2000*-*-* } { }
{ mips*-*-* } { }
{ *c54x*-*-* } { }
{ z80-*-* } { }
default {
setup_xfail "*c30*-*-*" "*c4x*-*-*" "pdp11-*-*"
run_dump_test redef
- setup_xfail "*c30*-*-*" "*c4x*-*-*" "*arm*-*-coff" "arm*-*-pe*" "crx*-*-*"
- setup_xfail "h8300*-*-*" "m68hc*-*-*" "maxq-*-*" "pdp11-*-*" "vax*-*-*" "z8k-*-*"
+ setup_xfail "*c30*-*-*" "*c4x*-*-*" "*arm*-*-*aout*" "*arm*-*-*coff" \
+ "*arm*-*-pe" "crx*-*-*" "h8300*-*-*" "m68hc*-*-*" "maxq-*-*" \
+ "pdp11-*-*" "vax*-*-*" "z8k-*-*"
run_dump_test redef2
+ setup_xfail "*-*-aix*" "*-*-coff" "*-*-cygwin" "*-*-mingw*" "*-*-pe*" \
+ "bfin-*-*" "*c4x*-*-*" "crx*-*-*" "h8300*-*-*" "m68hc*-*-*" \
+ "maxq-*-*" "or32-*-*" "pdp11-*-*" "vax*-*-*" "z8k-*-*"
+ run_dump_test redef3
+ setup_xfail "*c4x*-*-*"
+ gas_test_error "redef4.s" "" ".set for symbol already used as label"
+ setup_xfail "*c4x*-*-*"
+ gas_test_error "redef5.s" "" ".set for symbol already defined through .comm"
}
}
# .set works differently on some targets.
case $target_triplet in {
+ { alpha*-*-* } { }
+ { mips*-*-* } { }
+ { *c54x*-*-* } { }
{ z80-*-* } { }
default {
run_dump_test weakref1
RELOCATION RECORDS FOR .*
.*
-0+0.*(here|\.data)
-0+8.*xtrn
+0+00.*(here|\.data)
+0+08.*xtrn
+0+10.*(sym|\.data(\+0x0+10)?)
#...
Contents of section \.data:
0000 00000000 11111111 00000000 22222222[ ]+................[ ]*
+ 0010 [01]00000[01]0 .*
#pass
.long sym
.set sym, 0x22222222
.long sym
+sym:
+ .long sym
--- /dev/null
+#objdump: -rsj .data
+#name: .equ redefinitions (3)
+
+.*: .*
+
+RELOCATION RECORDS FOR .*
+.*
+0+00.*(here|\.data)
+0+08.*xtrn
+0+10.*sym
+#...
+Contents of section \.data:
+ 0000 00000000 11111111 00000000 22222222[ ]+................[ ]*
+ 0010 00000000 .*
+#pass
--- /dev/null
+ .data
+here:
+ .set sym, here
+ .long sym
+ .set sym, 0x11111111
+ .long sym
+ .set sym, xtrn
+ .long sym
+ .set sym, 0x22222222
+ .long sym
+ .comm sym, 1
+ .long sym
--- /dev/null
+ .data
+sym:
+ .set sym, 0
--- /dev/null
+ .comm sym, 1
+ .set sym, 0
#objdump: -t
#name: .equ redefinitions (ELF)
-#source: ../all/redef2.s
.*: .*
--- /dev/null
+ .data
+here:
+ .set sym, here
+ .long sym
+ .set sym, 0x11111111
+ .long sym
+ .set sym, xtrn
+ .long sym
+ .set sym, 0x22222222
+ .long sym
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