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Re: fix execute/20010518-2.c


> On Mon, Aug 20, 2001 at 07:43:50PM -0400, John David Anglin wrote:
> > That looks like a problem based on my inspection of the HP assembler
> > manual.  I'll bet unaligned symbol references would cause the som linker
> > difficulties as well.
> 
> Then set ASM_PREFERRED_EH_DATA_FORMAT to DW_EH_PE_aligned.

This doesn't work as things stand.  The problem is the alignment
argument is still 8 bits (ie., unaligned) even when the encoding
is DW_EH_PE_aligned.

It looks like there may be similar problems in the functions
dw2_asm_output_delta, dw2_asm_output_offset, dw2_asm_output_addr,
dw2_asm_output_addr_rtx and dw2_asm_output_encoded_addr_rtx
in dwarf2asm.c.

> Actually, I know SOM has all sorts of funky relocation types.
> Surely there's something in there so that you can get pc-relative
> or got-relative relocations, so that you don't need most of the
> runtime relocations at all.

I did a little more experimentation.  It seems gas does not auto-align.
Thus, there is some hope that UNALIGNED_INT_ASM_OP and friends could
be defined when gas is used.  However, this capability needs to be
checked for at runtime.

Dave
-- 
J. David Anglin                                  dave.anglin@nrc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6605)


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