Re: Re: Re: GCC-3.4.0 on FRV architecture BUG report

["zhanrk" <zhanrk-gcc at 163 dot com>]

After changing binutils-2.14 back into binutils-2.13, my problem has disappeared.

thanks everyone.

> 
> > zhanrk wrote:
> > > /*
> > >  * BUG ?!
> > >  * It should be "call 00000110 <puts>"
> > >  */
> > >  288:	fe 3f ff 5e 	call 0 <flush_input>
> > 
> > Not necessarily.  There is probably a relocation for this address that
> > will insert the address of the puts function.  Try using "objdump -x"
> > and look at the list of relocations.  There should be one for the
> > address 0x288 that contains the value of puts.
> > 
> > Reading disassembled assembler output can be confusing if you don't know
> > how assemblers and linkers work.  Try looking at the compiler -S output.
> >  Also, this does not prove a compiler problem, as this could be an
> > assembler bug.  That is another reason to look at the compiler -S output.
> > -- 
> > Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com
> > 
> > 
> hi, Jim. thanks a lot for your answer.
> And I have follow your advice, which proves that it is a gas BUG.
> 
> I use the following command to generate the assembly output:
> 
>      frv-elf-gcc -S -nostdinc -I /root/openboot/include -Wall -fomit-frame-pointer
> -fno-builtin -mcpu=fr400 -mno-vliw-branch stdio.c -o stdio.S
> 
> 
> 
> assembly result:
> 
> 
> 
> .text
> 
> 	.p2align 4
> 
> 	.globl printf
> 
> 	.type	printf, @function
> 
> printf:
> 
> 	addi sp,#-56,sp
> 
> 	sti fp, @(sp,16)
> 
> 	addi sp,#16,fp
> 
> 	movsg lr, gr5
> 
> 	sti gr5, @(fp,8)
> 
> 	stdi gr8, @(fp,16)
> 
> 	stdi gr10, @(fp,24)
> 
> 	stdi gr12, @(fp,32)
> 
> 	# blockage
> 
> 	sti gr8, @(fp,-4)
> 
> 	sethi #hi(printbuffer), gr8
> 
> 	setlo #lo(printbuffer), gr8
> 
> 	setlos #0, gr9
> 
> 	setlos #512, gr10
> 
> 	call memset
> 
> 	addi fp,#40,gr4
> 
> 	addi gr4,#-20,gr4
> 
> 	sti gr4, @(fp,-8)
> 
> 	sethi #hi(printbuffer), gr8
> 
> 	setlo #lo(printbuffer), gr8
> 
> 	ldi @(fp,-4), gr9
> 
> 	ldi @(fp,-8), gr10
> 
> 	call vsprintf
> 
> 	mov gr8, gr4
> 
> 	sthi gr4, @(fp,-10)
> 
> 	sethi #hi(printbuffer), gr8
> 
> 	setlo #lo(printbuffer), gr8
> 
> 
> 
> /*
> 
>  * It is correct.
> 
>  */
> 
> 	call puts
> 
> 
> 
> 	ldi @(fp,8), gr5
> 
> 	ld @(fp,gr0), fp
> 
> 	addi sp,#56,sp
> 
> 	jmpl @(gr5,gr0)
> 
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