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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.
This commit is contained in:
H.J. Lu 2008-10-07 14:21:59 +00:00
parent 9124fe4822
commit 97c4f2d9c9
5 changed files with 22 additions and 0 deletions
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10
gas/ChangeLog
View File

@ -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.

3
gas/config/tc-mmix.h
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@ -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

5
gas/doc/internals.texi
View File

@ -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

2
gas/read.c
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@ -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);

2
gas/symbols.c
View File

@ -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);