+ /* Overflow computation and operand insertion is complicated
+ by valid offsets and insertions changing depending on the
+ instruction being used! */
+ if ((insn & 0x0780) == 0x0500)
+ {
+ value += ((insn & 0x7f) << 2);
+
+ /* Handle sld.w and sst.w -- 8 bit unsigned offset */
+ if ((long) value > 0xff || (long) value < 0)
+ return bfd_reloc_overflow;
+
+ if ((value % 4) != 0)
+ return bfd_reloc_dangerous;
+
+ insn &= 0xff81;
+ insn |= (value >> 1);
+ bfd_put_16 (input_bfd, insn, hit_data);
+ return bfd_reloc_ok;
+ }
+
+ if ((insn & 0x0780) == 0x0400 || (insn & 0x0780) == 0x0480)
+ {
+ value += ((insn & 0x7f) << 1);
+
+ /* Handle sld.h and sst.h -- 8 bit unsigned offset */
+ if ((long) value > 0xff || (long) value < 0)
+ return bfd_reloc_overflow;
+
+ if ((value % 2) != 0)
+ return bfd_reloc_dangerous;
+
+ insn &= 0xff80;
+ insn |= (value >> 1);
+ bfd_put_16 (input_bfd, insn, hit_data);
+ return bfd_reloc_ok;
+ }
+
+ if ((insn & 0x0780) == 0x0300 || (insn & 0x0780) == 0x0380)
+ {
+ value += (insn & 0x7f);
+
+ /* Handle sld.b and sst.b -- 7 bit unsigned offset */
+ if ((long) value > 0x7f || (long) value < 0)
+ return bfd_reloc_overflow;
+ insn &= 0xff80;
+ insn |= value;
+ bfd_put_16 (input_bfd, insn, hit_data);
+ return bfd_reloc_ok;
+ }
+
+ /* Guess (XXX) that it's a movea instruction or something
+ similar. */
+ value += insn;
+ if ((long)value > 0x7fff || (long)value < -0x8000)
+ return bfd_reloc_overflow;
+
+ bfd_put_16 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;