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authorJan Beulich <jbeulich@novell.com>2005-11-17 07:29:28 +0000
committerJan Beulich <jbeulich@novell.com>2005-11-17 07:29:28 +0000
commit92757bc91688685a680cc6c6cd03324b894c4501 (patch)
treeaf7f90015e9fa7a13331367da0e55c3fbe02b9b7 /gas
parent2be701a30fd949e7a486fcf6843fdb34f6bc00dc (diff)
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gas/
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. gas/testsuite/ 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.
Diffstat (limited to 'gas')
-rw-r--r--gas/ChangeLog15
-rw-r--r--gas/cond.c2
-rw-r--r--gas/doc/internals.texi29
-rw-r--r--gas/read.c40
-rw-r--r--gas/symbols.c24
-rw-r--r--gas/symbols.h1
-rw-r--r--gas/testsuite/ChangeLog16
-rw-r--r--gas/testsuite/gas/all/cond.l6
-rw-r--r--gas/testsuite/gas/all/cond.s8
-rw-r--r--gas/testsuite/gas/all/gas.exp17
-rw-r--r--gas/testsuite/gas/all/redef2.d6
-rw-r--r--gas/testsuite/gas/all/redef2.s2
-rw-r--r--gas/testsuite/gas/all/redef3.d15
-rw-r--r--gas/testsuite/gas/all/redef3.s12
-rw-r--r--gas/testsuite/gas/all/redef4.s3
-rw-r--r--gas/testsuite/gas/all/redef5.s2
-rw-r--r--gas/testsuite/gas/elf/redef.d1
-rw-r--r--gas/testsuite/gas/elf/redef.s10
18 files changed, 190 insertions, 19 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog
index 6dc5808..5313919 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,18 @@
+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.
diff --git a/gas/cond.c b/gas/cond.c
index e791b11..d6c32ac 100644
--- a/gas/cond.c
+++ b/gas/cond.c
@@ -102,7 +102,7 @@ s_ifdef (int test_defined)
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);
diff --git a/gas/doc/internals.texi b/gas/doc/internals.texi
index 51b4061..dffdb1e 100644
--- a/gas/doc/internals.texi
+++ b/gas/doc/internals.texi
@@ -93,6 +93,12 @@ responsible for setting it when a symbol is used in backend routines.
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.
@@ -165,6 +171,16 @@ Return non-zero if the symbol is a @code{weakref} alias.
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
@@ -222,6 +238,19 @@ Clear the @code{weakref} aliased status of a symbol. This is implicitly called
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
diff --git a/gas/read.c b/gas/read.c
index 84ca9fa..0485d72 100644
--- a/gas/read.c
+++ b/gas/read.c
@@ -1467,13 +1467,25 @@ s_comm_internal (int param,
*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);
@@ -3174,10 +3186,18 @@ s_weakref (int ignore ATTRIBUTE_UNUSED)
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;
diff --git a/gas/symbols.c b/gas/symbols.c
index f781a35..f6dafcd 100644
--- a/gas/symbols.c
+++ b/gas/symbols.c
@@ -333,8 +333,18 @@ colon (/* Just seen "x:" - rattle symbols & frags. */
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;
@@ -421,7 +431,10 @@ colon (/* Just seen "x:" - rattle symbols & frags. */
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);
+ }
}
}
@@ -2187,6 +2200,13 @@ S_SET_VOLATILE (symbolS *s)
}
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))
diff --git a/gas/symbols.h b/gas/symbols.h
index 99fa3c3..d4e56fb 100644
--- a/gas/symbols.h
+++ b/gas/symbols.h
@@ -108,6 +108,7 @@ extern void S_SET_WEAKREFD (symbolS *);
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
diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index 059cc50..dafe704 100644
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,19 @@
+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.
diff --git a/gas/testsuite/gas/all/cond.l b/gas/testsuite/gas/all/cond.l
index a103d8d..6939ee8 100644
--- a/gas/testsuite/gas/all/cond.l
+++ b/gas/testsuite/gas/all/cond.l
@@ -24,7 +24,13 @@
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[ ]*
diff --git a/gas/testsuite/gas/all/cond.s b/gas/testsuite/gas/all/cond.s
index 2737d1f..94136ac 100644
--- a/gas/testsuite/gas/all/cond.s
+++ b/gas/testsuite/gas/all/cond.s
@@ -30,7 +30,15 @@
.long 9
.endif
+ .comm c, 1
+ .ifndef c
+ .err
+ .endif
+
.equiv x, y
+ .ifndef x
+ .err
+ .endif
.equiv y, 0
.if x
.err
diff --git a/gas/testsuite/gas/all/gas.exp b/gas/testsuite/gas/all/gas.exp
index d92ede8..c97a730 100644
--- a/gas/testsuite/gas/all/gas.exp
+++ b/gas/testsuite/gas/all/gas.exp
@@ -74,16 +74,24 @@ case $target_triplet in {
# .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"
}
}
@@ -256,6 +264,9 @@ if { ![istarget "i960-*-*"] } {
# .set works differently on some targets.
case $target_triplet in {
+ { alpha*-*-* } { }
+ { mips*-*-* } { }
+ { *c54x*-*-* } { }
{ z80-*-* } { }
default {
run_dump_test weakref1
diff --git a/gas/testsuite/gas/all/redef2.d b/gas/testsuite/gas/all/redef2.d
index 452d610..d53efa5 100644
--- a/gas/testsuite/gas/all/redef2.d
+++ b/gas/testsuite/gas/all/redef2.d
@@ -5,9 +5,11 @@
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
diff --git a/gas/testsuite/gas/all/redef2.s b/gas/testsuite/gas/all/redef2.s
index 3e975e1..89a29ac 100644
--- a/gas/testsuite/gas/all/redef2.s
+++ b/gas/testsuite/gas/all/redef2.s
@@ -8,3 +8,5 @@ here:
.long sym
.set sym, 0x22222222
.long sym
+sym:
+ .long sym
diff --git a/gas/testsuite/gas/all/redef3.d b/gas/testsuite/gas/all/redef3.d
new file mode 100644
index 0000000..85843bb
--- /dev/null
+++ b/gas/testsuite/gas/all/redef3.d
@@ -0,0 +1,15 @@
+#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
diff --git a/gas/testsuite/gas/all/redef3.s b/gas/testsuite/gas/all/redef3.s
new file mode 100644
index 0000000..2296d74
--- /dev/null
+++ b/gas/testsuite/gas/all/redef3.s
@@ -0,0 +1,12 @@
+ .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
diff --git a/gas/testsuite/gas/all/redef4.s b/gas/testsuite/gas/all/redef4.s
new file mode 100644
index 0000000..8bd3943
--- /dev/null
+++ b/gas/testsuite/gas/all/redef4.s
@@ -0,0 +1,3 @@
+ .data
+sym:
+ .set sym, 0
diff --git a/gas/testsuite/gas/all/redef5.s b/gas/testsuite/gas/all/redef5.s
new file mode 100644
index 0000000..8a3a67a
--- /dev/null
+++ b/gas/testsuite/gas/all/redef5.s
@@ -0,0 +1,2 @@
+ .comm sym, 1
+ .set sym, 0
diff --git a/gas/testsuite/gas/elf/redef.d b/gas/testsuite/gas/elf/redef.d
index d62e302..6e5daea 100644
--- a/gas/testsuite/gas/elf/redef.d
+++ b/gas/testsuite/gas/elf/redef.d
@@ -1,6 +1,5 @@
#objdump: -t
#name: .equ redefinitions (ELF)
-#source: ../all/redef2.s
.*: .*
diff --git a/gas/testsuite/gas/elf/redef.s b/gas/testsuite/gas/elf/redef.s
new file mode 100644
index 0000000..3e975e1
--- /dev/null
+++ b/gas/testsuite/gas/elf/redef.s
@@ -0,0 +1,10 @@
+ .data
+here:
+ .set sym, here
+ .long sym
+ .set sym, 0x11111111
+ .long sym
+ .set sym, xtrn
+ .long sym
+ .set sym, 0x22222222
+ .long sym