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authorH.J. Lu <hjl.tools@gmail.com>2008-10-07 14:21:59 +0000
committerH.J. Lu <hjl.tools@gmail.com>2008-10-07 14:21:59 +0000
commit97c4f2d9c95f8a9dcf3941010277428b3c0baf79 (patch)
tree6887c56bdb11855be8329174fe05c19961c899f2
parent9124fe4822e9f9bf1b746dcf987541ebb31bd67a (diff)
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2008-10-07 H.J. Lu <hongjiu.lu@intel.com>
* read.c (pseudo_set): Don't allow global register symbol only if TC_GLOBAL_REGISTER_SYMBOL_OK is undefined. * symbols.c (S_SET_EXTERNAL): Likewise. * config/tc-mmix.h (TC_GLOBAL_REGISTER_SYMBOL_OK): Defined. * doc/internals.texi: Document TC_GLOBAL_REGISTER_SYMBOL_OK.
-rw-r--r--gas/ChangeLog10
-rw-r--r--gas/config/tc-mmix.h3
-rw-r--r--gas/doc/internals.texi5
-rw-r--r--gas/read.c2
-rw-r--r--gas/symbols.c2
5 files changed, 22 insertions, 0 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog
index 000667f..14811cf 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,13 @@
+2008-10-07 H.J. Lu <hongjiu.lu@intel.com>
+
+ * read.c (pseudo_set): Don't allow global register symbol only
+ if TC_GLOBAL_REGISTER_SYMBOL_OK is undefined.
+ * symbols.c (S_SET_EXTERNAL): Likewise.
+
+ * config/tc-mmix.h (TC_GLOBAL_REGISTER_SYMBOL_OK): Defined.
+
+ * doc/internals.texi: Document TC_GLOBAL_REGISTER_SYMBOL_OK.
+
2008-10-06 Bob Wilson <bob.wilson@acm.org>
* doc/as.texinfo (Local): New description of ELF .local directive.
diff --git a/gas/config/tc-mmix.h b/gas/config/tc-mmix.h
index 0e72d98..1fa3463 100644
--- a/gas/config/tc-mmix.h
+++ b/gas/config/tc-mmix.h
@@ -224,3 +224,6 @@ extern void mmix_md_do_align (int, char *, int, int);
/* This target is buggy, and sets fix size too large. */
#define TC_FX_SIZE_SLACK(FIX) 6
+
+/* MMIX has global register symbols. */
+#define TC_GLOBAL_REGISTER_SYMBOL_OK
diff --git a/gas/doc/internals.texi b/gas/doc/internals.texi
index 7c6172c..89e9198 100644
--- a/gas/doc/internals.texi
+++ b/gas/doc/internals.texi
@@ -1325,6 +1325,11 @@ This macro is evaluated for any fixup with a @code{fx_subsy} that
@code{fixup_segment} cannot reduce to a number. If the macro returns
@code{false} an error will be reported.
+@item TC_GLOBAL_REGISTER_SYMBOL_OK
+@cindex TC_GLOBAL_REGISTER_SYMBOL_OK
+Define this macro if global register symbols are supported. The default
+is to disallow global register symbols.
+
@item MD_APPLY_SYM_VALUE (@var{fix})
@cindex MD_APPLY_SYM_VALUE
This macro controls whether the symbol value becomes part of the value passed
diff --git a/gas/read.c b/gas/read.c
index db801bc..121c97a 100644
--- a/gas/read.c
+++ b/gas/read.c
@@ -3621,12 +3621,14 @@ pseudo_set (symbolS *symbolP)
break;
case O_register:
+#ifndef TC_GLOBAL_REGISTER_SYMBOL_OK
if (S_IS_EXTERNAL (symbolP))
{
as_bad ("can't equate global symbol `%s' with register name",
S_GET_NAME (symbolP));
return;
}
+#endif
S_SET_SEGMENT (symbolP, reg_section);
S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
set_zero_frag (symbolP);
diff --git a/gas/symbols.c b/gas/symbols.c
index 84f394c..7e4f982 100644
--- a/gas/symbols.c
+++ b/gas/symbols.c
@@ -2191,12 +2191,14 @@ S_SET_EXTERNAL (symbolS *s)
_("section symbols are already global"));
return;
}
+#ifndef TC_GLOBAL_REGISTER_SYMBOL_OK
if (S_GET_SEGMENT (s) == reg_section)
{
as_bad ("can't make register symbol `%s' global",
S_GET_NAME (s));
return;
}
+#endif
s->bsym->flags |= BSF_GLOBAL;
s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK);