+ // Step 1: Figure out what the relocated value should be
+ if(scat->r_type == GENERIC_RELOC_VANILLA)
+ {
+ word = scat->r_value + sect->offset + ((long) image);
+ }
+ else if(scat->r_type == PPC_RELOC_SECTDIFF
+ || scat->r_type == PPC_RELOC_LO16_SECTDIFF
+ || scat->r_type == PPC_RELOC_HI16_SECTDIFF
+ || scat->r_type == PPC_RELOC_HA16_SECTDIFF)
+ {
+ struct scattered_relocation_info *pair =
+ (struct scattered_relocation_info*) &relocs[i+1];
+
+ if(!pair->r_scattered || pair->r_type != PPC_RELOC_PAIR)
+ barf("Invalid Mach-O file: "
+ "PPC_RELOC_*_SECTDIFF not followed by PPC_RELOC_PAIR");
+
+ word = (unsigned long)
+ (relocateAddress(oc, nSections, sections, scat->r_value)
+ - relocateAddress(oc, nSections, sections, pair->r_value));
+ i++;
+ }
+ else
+ continue; // ignore the others
+
+ if(scat->r_type == GENERIC_RELOC_VANILLA
+ || scat->r_type == PPC_RELOC_SECTDIFF)
+ {
+ *wordPtr = word;
+ }
+ else if(scat->r_type == PPC_RELOC_LO16_SECTDIFF)
+ {
+ ((unsigned short*) wordPtr)[1] = word & 0xFFFF;
+ }
+ else if(scat->r_type == PPC_RELOC_HI16_SECTDIFF)
+ {
+ ((unsigned short*) wordPtr)[1] = (word >> 16) & 0xFFFF;
+ }
+ else if(scat->r_type == PPC_RELOC_HA16_SECTDIFF)
+ {
+ ((unsigned short*) wordPtr)[1] = ((word >> 16) & 0xFFFF)
+ + ((word & (1<<15)) ? 1 : 0);
+ }