[Bug target/26262] New: Named section support should infer segment name

[Bug target/26262] New: Named section support should infer segment name

[jconner at apple dot com]

The cctools assembler used by powerpc-apple-darwin requires section directives
in the form:

  .section SEGNAME, SECTION_NAME

And, using a section attribute in gcc passes the name along unmodified.  So,
for example:

  void foo (void) __attribute__((section("bar")));
  void foo (void) {}

produces:

  .section bar
  ...

which generates an assembly-time syntax error.  It would be nice if gcc would
infer the segment name from the data type (__TEXT for functions and __DATA for
data), unless a segment name is present (as indicated by a comma in the section
name specification, perhaps?)

There is some discussion of this in the thread starting here:

  http://gcc.gnu.org/ml/gcc-patches/2006-02/msg00226.html


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           Summary: Named section support should infer segment name
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jconner at apple dot com
GCC target triplet: powerpc-apple-darwin


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26262

[Bug target/26262] Named section support should infer segment name

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2006-02-13 17:22 -------
Confirmed.


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pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2006-02-13 17:22:54
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26262

[Bug target/26262] Named section support should infer segment name

[steven at gcc dot gnu dot org]

------- Comment #2 from steven at gcc dot gnu dot org  2010-07-20 14:04 -------
This is still a problem. Iain, one for you?


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steven at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |iains at gcc dot gnu dot org
   Last reconfirmed|2006-02-13 17:22:54         |2010-07-20 14:04:44
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26262

[Bug target/26262] Named section support should infer segment name

[iains at gcc dot gnu dot org]

------- Comment #3 from iains at gcc dot gnu dot org  2010-07-20 14:17 -------
(In reply to comment #2)
> This is still a problem. Iain, one for you?

I'll take a shufftie..
...  can one overload attribute handling? 

(i.e. can I sneek a darwin-specific handler in via the target table in darwin.h
.. or do I need to deal with this in c-family?)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26262

[Bug target/26262] Named section support should infer segment name

[iains at gcc dot gnu dot org]

------- Comment #4 from iains at gcc dot gnu dot org  2010-07-20 14:34 -------

having said that, isn't this just a problem of bad source code?

if the target is darwin - then the section name should be specified
appropriately surely?

I guess filling it in automatically would be possible, by some kind of back-end
manipulation if we detect that DECL_SECTION_NAME is set and the string is
invalid.. 

... but it seems a bit breakable (for example, if we get darwin working with
gas...)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26262