mips64 n32 and n64 support in dl-machine.h

[Andreas Schwab]

Alexandre Oliva <aoliva@redhat.com> writes:

|> >> +	__builtin_memcpy (&reloc_value, reloc_addr, sizeof (reloc_value));
|> 
|> > Why is this line needed?  I don't understand the need for it.
|> 
|> To support mis-aligned relocations.  According to Ralf Baechle, we
|> must support them.  I had this in the ChangeLog, but somehow got rid
|> of it while cleaning up some duplication.

Then the use of memcpy won't help.  Since both the source and the
destination are pointers to ElfW(Addr) the compiler has the right to
assume that they are correctly aligned.  You have to explicitly tell the
compiler that the source can be an unaligned address.

Andreas.

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Andreas Schwab, SuSE Labs, schwab@suse.de
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