Has anybody used 0.9.30 on sh4?

Carmelo AMOROSO carmelo.amoroso at st.com
Mon Feb 23 15:49:28 UTC 2009


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Rob Landley wrote:
> If I enable CTOR/DTOR support, I get undefined _init and _fini.  I don't 
> remember which .o file those two are in, but it's linking in the same group as 
> all the other targets and those work, sh4 doesn't.
> 
> # gcc -v thread-hello2.c -lpthread
> ...
> /usr/bin/../lib/crt1.o: In function `_start':
> (.text+0x24): undefined reference to `_init'
> /usr/bin/../lib/crt1.o: In function `_start':
> (.text+0x28): undefined reference to `_fini'
> collect2: ld returned 1 exit status
> 

Hi Rob,
sorry for the dummy question... are you compiling on a sh4 box I
imagine, aren't you ?

> When I disassemble crti.o on i686, I see definitions of _init and _fini, but 
> when I disassemble crti.o on sh4, the functions are called .init and .fini:
> 
> / # objdump -d /usr/lib/crti.o
> 
> /usr/lib/crti.o:     file format elf32-sh-linux
> 
> Disassembly of section .init:
> 
> 00000000 <.init>:
>    0:	c6 2f       	mov.l	r12, at -r15
>    2:	e6 2f       	mov.l	r14, at -r15
>    4:	22 4f       	sts.l	pr, at -r15
>    6:	f3 6e       	mov	r15,r14
>    8:	00 a0       	bra	0xc
>    a:	09 00       	nop	
> Disassembly of section .fini:
> 
> 00000000 <.fini>:
>    0:	c6 2f       	mov.l	r12, at -r15
>    2:	e6 2f       	mov.l	r14, at -r15
>    4:	22 4f       	sts.l	pr, at -r15
>    6:	f3 6e       	mov	r15,r14
>    8:	00 a0       	bra	0xc
>    a:	09 00       	nop	
> 
> I looked at uClibc/libc/sysdeps/linux/sh/crti.S  and tried removing the 
> "hidden" directives for both those, but it didn't help.
> 
> Any clues?
> 
> Rob
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