Objcopy problem

[Andrew STUBBS]

Hi,

I'm having a bit of trouble adjusting section flags with objcopy.

I can create a test case using the following program and linker script:

FILE: test.c
int main()
{
}
END-FILE

FILE: link.ld
SECTIONS
{
   .text           :
   {
     *(.text .stub .text.* .gnu.linkonce.t.*)
   } =0
   .post_text_reserve :
   {
     /* Reserve some space so we can drop something in here later */
     . += 0x160;
   }
}
END-FILE

   $ gcc test.c -T link.ld -nostdlib

This successfully produces a (rather useless) binary which looks like this:

   $ sh4objdump -ph a.out

a.out:     file format elf32-shl

Program Header:
     LOAD off    0x00000080 vaddr 0x00000000 paddr 0x00000000 align 2**7
          filesz 0x0000000c memsz 0x0000016c flags rwx

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
   0 .text         0000000c  00000000  00000000  00000080  2**1
                   CONTENTS, ALLOC, LOAD, READONLY, CODE
   1 .post_text_reserve 00000160  0000000c  0000000c  0000008c  2**0
                   ALLOC
   2 .comment      00000043  00000000  00000000  0000008c  2**0
                   CONTENTS, READONLY




All good so far, but now I need to add extra flags to the 
.post_text_reserve section.

I used to be able to do it with objdump (I was using 2.16.91.0.5), but 
now I get an error (using 2.17.50.0.17):
     $ sh4objcopy a.out a2.out --set-section-flags 
.post_text_reserve=contents,alloc,load,readonly,code
BFD: a2.out: section `.text' can't be allocated in segment 0
/group/mdt/products/st40/st40r2-bsf-linux/bin/sh4objcopy: a2.out: Bad value
BFD: a2.out: section `.text' can't be allocated in segment 0
/group/mdt/products/st40/st40r2-bsf-linux/bin/sh4objcopy: a2.out: Bad value


I've tracked this error message to bfd/elf.c . It appears to have been 
introduced last February/March as a fix for a linker issue: 
http://sourceware.org/ml/binutils/2007-02/msg00375.html . Of course, it 
might be that the problem is due to another change somewhere else, and 
this check is just catching it.

Am I really trying to do something illegal, or is there likely some 
problem with BFD? I can't easily debug this without really understanding 
what the right behaviour is. It doesn't seem right that it reports an 
error against .text, when it's the .post_text_reserve that's been altered.

My target is SH, if that makes any difference.

Thanks in advance

Andrew