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Re: --enable-shared doesn't work on Sun-3


Sorry to follow up on my own mail; I should have thought of this in  
the first place.

Kate wrote:

>  Here is how egcs fails:

>  /usr/tmp/cc6ECDC7.s:2388: Error: operands mismatch --
>  statement `jbsr _demangle_template_template_parm,a1'
>  ignored

And I replied:

>  Yep, this is basically the same problem I ran into back
>  in May, when egcs erroneously assumed I wanted to build
>  it --enable-shared.
>
>  Apparently compiling with -fpic doesn't work on m68k's
>  ...

While that's true, it is still interesting to find out what  
instruction egcs _wants_ to generate here, because the m68k family  
supports more than just:  jbsr address.

According to my "M68000 FAMILY PROGRAMMER's REFERENCE MANUAL", the  
instruction "Jump to Subroutine" supports the following addressing  
modes:

	(An)	Jump to Subroutine of which the address is in
		address register An
	d16(An)	Jump to Subroutine of which the address is the
		sum of a 16 bit value d16 and the contents of An
	d8(An,Xm)
		The address of the subroutine is the sum of an
		8 bit value d8, plus the contents of An, plus
		the contents of Am/Dm, whichever X.
	xxx.W	The address of the subroutine is the value of the
		16 bits xxx.
	xxx.L	The address of the subroutine is the value of the
		32 bits xxx.

[ The M680[234]0 have even more "interesting" combinations ]

The second and third alternatives have variants where An is PC  
(i.e. the value of the program counter - apparently for supporting  
position independent code ;-).

So the question is:  What subroutine call addressing is meant by  
jbsr _demangle_template_template_parm,a1 and how should it be coded  
correctly (as jbsr _demangle_template_template_parm(a1)) ?  And does  
it make sense, then ?  Somebody who knows more about -fpic with a  
clue ?

Hope this helps,
Toon.


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