[linuxsh-dev] Re: problem about gcc

[kaz K. <kk...@rr...>]

Hi,

leg...@ya... wrote:
> hey , 
>    in the gcc ,the file gcc/config/sh/sh.h have 
> 
>  #define TARGET_DEFAULT  (SH3_BIT|SH2_BIT|LITTLE_ENDIAN_BIT) 
> 
> i don't think it 's suitable . because when i use the gcc to compile the
> program for sh2 ( -m2 )  . in the code , it produce the instruction
> "shad"  , it is a instruction for sh3 . 
>  so i change it to 
> 
> #define TARGET_DEFAULT  (0) 
> 
> just as it is in the standard gcc-2.95.2.

Which non-standard gcc-2.95.2 you are talking about?
I can't find such problem in our patch to gcc-2.95.2, though
any patches to gcc-2.95.2 may be obsolete now.

> but the problem is when i use this gcc to compile the program , it has
> error 
>
> (.text+0x694): undefined reference to `__ashiftrt_r4_8'
> (.text+0x774): undefined reference to `__ashiftrt_r4_8'  
> 
> anybody has the advice about it , i will appreciate in advance.

You could check easily that __ashiftrt_r4_8 is defined or not in
your libgcc.a by using cross nm. If not, it seems that your gcc has
configuration problems. In that case, check your gcc/config/sh/t-linux
or gcc/config/sh/t-sh (this depends how you configure gcc) includes
a line like

LIB1ASMFUNCS = _ashiftrt _ashiftrt_n _ashiftlt _lshiftrt _movstr \

or not. (Or just try the newer gcc

ftp.m17n.org:/pub/super-h/testing/gcc-core-20001120.tar.gz
ftp.m17n.org:/pub/super-h/testing/gcc-20001120.diff.gz

though I don't use it with -m2 at all. Is there someone who does it
already?)

	kaz