func adddynrel(s *ld.LSym, r *ld.Reloc) { targ := r.Sym ld.Ctxt.Cursym = s switch r.Type { default: if r.Type >= 256 { ld.Diag("unexpected relocation type %d", r.Type) return } // Handle relocations found in ELF object files. case 256 + ld.R_PPC64_REL24: r.Type = obj.R_CALLPOWER // This is a local call, so the caller isn't setting // up r12 and r2 is the same for the caller and // callee. Hence, we need to go to the local entry // point. (If we don't do this, the callee will try // to use r12 to compute r2.) r.Add += int64(r.Sym.Localentry) * 4 if targ.Type == obj.SDYNIMPORT { // Should have been handled in elfsetupplt ld.Diag("unexpected R_PPC64_REL24 for dyn import") } return case 256 + ld.R_PPC_REL32: r.Type = obj.R_PCREL r.Add += 4 if targ.Type == obj.SDYNIMPORT { ld.Diag("unexpected R_PPC_REL32 for dyn import") } return case 256 + ld.R_PPC64_ADDR64: r.Type = obj.R_ADDR if targ.Type == obj.SDYNIMPORT { // These happen in .toc sections ld.Adddynsym(ld.Ctxt, targ) rela := ld.Linklookup(ld.Ctxt, ".rela", 0) ld.Addaddrplus(ld.Ctxt, rela, s, int64(r.Off)) ld.Adduint64(ld.Ctxt, rela, ld.ELF64_R_INFO(uint32(targ.Dynid), ld.R_PPC64_ADDR64)) ld.Adduint64(ld.Ctxt, rela, uint64(r.Add)) r.Type = 256 // ignore during relocsym } return case 256 + ld.R_PPC64_TOC16: r.Type = obj.R_POWER_TOC r.Variant = ld.RV_POWER_LO | ld.RV_CHECK_OVERFLOW return case 256 + ld.R_PPC64_TOC16_LO: r.Type = obj.R_POWER_TOC r.Variant = ld.RV_POWER_LO return case 256 + ld.R_PPC64_TOC16_HA: r.Type = obj.R_POWER_TOC r.Variant = ld.RV_POWER_HA | ld.RV_CHECK_OVERFLOW return case 256 + ld.R_PPC64_TOC16_HI: r.Type = obj.R_POWER_TOC r.Variant = ld.RV_POWER_HI | ld.RV_CHECK_OVERFLOW return case 256 + ld.R_PPC64_TOC16_DS: r.Type = obj.R_POWER_TOC r.Variant = ld.RV_POWER_DS | ld.RV_CHECK_OVERFLOW return case 256 + ld.R_PPC64_TOC16_LO_DS: r.Type = obj.R_POWER_TOC r.Variant = ld.RV_POWER_DS return case 256 + ld.R_PPC64_REL16_LO: r.Type = obj.R_PCREL r.Variant = ld.RV_POWER_LO r.Add += 2 // Compensate for relocation size of 2 return case 256 + ld.R_PPC64_REL16_HI: r.Type = obj.R_PCREL r.Variant = ld.RV_POWER_HI | ld.RV_CHECK_OVERFLOW r.Add += 2 return case 256 + ld.R_PPC64_REL16_HA: r.Type = obj.R_PCREL r.Variant = ld.RV_POWER_HA | ld.RV_CHECK_OVERFLOW r.Add += 2 return } // Handle references to ELF symbols from our own object files. if targ.Type != obj.SDYNIMPORT { return } // TODO(austin): Translate our relocations to ELF ld.Diag("unsupported relocation for dynamic symbol %s (type=%d stype=%d)", targ.Name, r.Type, targ.Type) }