On Wednesday 21 June 2006 01:36, Valeriy E. Ushakov wrote:
> On Tue, Jun 20, 2006 at 00:38:30 +1000, Simon Burge wrote:
> > MIPS with gcc4 is having some problems generating bad code which we sort
> > of worked around but breaking gcc3 in the process.  Nick Hudson and I
> > have come up with the following which does away with the init_fallthru
> > and fini_fallthru functions and just puts _init and _fini directly in
> > the .init and .fini sections.
>
> I'm confused.  crti.c says:
>
> void    _init(void) __attribute__((section(".init")));
> void    _fini(void) __attribute__((section(".fini")));
>
> so these functions are already in .init and .fini respectively.

ps. _init/_fini and init/fini_fallthru both need to be in .init/.fini. For 
example,

$ objdump -D /usr/lib/crti.o -j .init

/usr/lib/crti.o:     file format elf32-i386

Disassembly of section .init:

00000000 <_init>:
   0:   55                      push   %ebp
   1:   89 e5                   mov    %esp,%ebp
   3:   53                      push   %ebx
   4:   e8 00 00 00 00          call   9 <_init+0x9>
   9:   5b                      pop    %ebx
   a:   81 c3 03 00 00 00       add    $0x3,%ebx
  10:   50                      push   %eax
  11:   e8 fc ff ff ff          call   12 <_init+0x12>
  16:   8b 5d fc                mov    0xfffffffc(%ebp),%ebx
  19:   c9                      leave
  1a:   c3                      ret

0000001b <init_fallthru>:
  1b:   90                      nop
  1c:   8d 74 26 00             lea    0x0(%esi),%esi

Nick