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Reuse of reloc_howto_type depending on section


I am currently porting the Binutils to a new architecture and ask for
your help in the following issue: The target architecture requires all
addresses to the instruction memory (in control transfer instructions)
to be multiples of 2 (since all instructions are 16 bits wide and
properly aligned), whereas the data memory can be accessed on a per
byte basis. Now, the assembler allows for functions lo(), hi(), 3rd(),
4th() within load instructions to extract portions of a symbol, and
these are used to access both the instruction memory and the data

What I would like to do is to let relocations be right shifted by an
additional 1 if the symbol within lo(), hi(), etc. refers to the .text
section. Currently, all symbols are right shifted by this amount in
the relocation process (but this is a failure for symbols referring to
the data memory).

Here is an example of the reloc_howto_type for hi():

/* A second byte absolute relocation of 32-bit address. */
HOWTO (R_SPEAR32_HI,       /* type */
       9,                                    /* rightshift */
       0,                                    /* size (0 = byte, 1 =
short, 2 = long) */
       8,                                    /* bitsize */
       FALSE,                           /* pc_relative */
       4,                                    /* bitpos */
       complain_overflow_dont,    /* complain_on_overflow */
       bfd_elf_generic_reloc,        /* special_function */
       "R_SPEAR32_HI",           /* name */
       FALSE,                           /* partial_inplace */
       0,                                    /* src_mask */
       0xFF0,                            /* dst_mask */
       FALSE),                          /* pcrel_offset */

Any clues on that issue? Thanks in advance!

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