objdump on libgcc

objdump on libgcc

[Fabio Giovagnini]

Hi Andrew,
in my crosstool dir I have only one libgcc.a

If on it I do

fgiovagnini@aurio01:~/sh7203/sh7203-uclinux-4.4-143/build/target/lib/gcc/sh-
uclinux/4.4.1$ sh-uclinux-objdump -a libgcc.a | more
In archive libgcc.a:

_ashiftrt.o:     file format elf32-shbig-fdpic
rw-r--r-- 2012/0   1604 Mar 18 22:26 2010 _ashiftrt.o


_ashiftrt_n.o:     file format elf32-shbig-fdpic
rw-r--r-- 2012/0    595 Mar 18 22:26 2010 _ashiftrt_n.o


_ashiftlt.o:     file format elf32-shbig-fdpic
rw-r--r-- 2012/0    603 Mar 18 22:26 2010 _ashiftlt.o


_lshiftrt.o:     file format elf32-shbig-fdpic
rw-r--r-- 2012/0    603 Mar 18 22:26 2010 _lshiftrt.o


_movmem.o:     file format elf32-shbig-fdpic
rw-r--r-- 2012/0   1535 Mar 18 22:26 2010 _movmem.o


_movmem_i4.o:     file format elf32-shbig-fdpic
rw-r--r-- 2012/0    844 Mar 18 22:26 2010 _movmem_i4.o


_mulsi3.o:     file format elf32-shbig-fdpic
rw-r--r-- 2012/0    524 Mar 18 22:26 2010 _mulsi3.o


_sdivsi3.o:     file format elf32-shbig-fdpic
rw-r--r-- 2012/0    648 Mar 18 22:26 2010 _sdivsi3.o


_sdivsi3_i4.o:     file format elf32-shbig-fdpic
rw-r--r-- 2012/0    441 Mar 18 22:26 2010 _sdivsi3_i4.o

This is the result,
so I think libgcc is only for fdpic target, so if I need it for building 
kernel (and for making zImage it seems to be essential) I can link only a 
wrong libgcc.

What can I test more?

Cheers


-- 
Fabio Giovagnini

Aurion s.r.l.
P.I e C.F.
00885711200
Tel. +39.051.594.78.24
Cell. +39.335.83.50.919

Re: objdump on libgcc

[Andrew Stubbs]

On 01/04/10 08:37, Fabio Giovagnini wrote:
> This is the result,
> so I think libgcc is only for fdpic target, so if I need it for building
> kernel (and for making zImage it seems to be essential) I can link only a
> wrong libgcc.

Absolutely, there is only FDPIC libgcc in the release I sent to you.

The kernel has not needed glibc for a while now. The relevant routines 
were copied/rewritten to arch/sh/lib.

I expect that all the routines you need are present, so it should just 
be makefile adjustments. If it does need something extra (that somehow 
the whole of the rest of the kernel can do without) then I expect it can 
be extracted from the compiler sources (gcc/config/sh/lib1funcs.asm). 
The linker should have already told you this list of routines it needs.

Andrew