[yaml2obj] Support AArch64 relocations.

[stewartd]

Summary

This adds support for AArch64 relocation types. The supplied test is there to ensure that an AArch64 relocation type is recognized.

[shankarke]

test/Object/AArch64/yaml2obj-elf-aarch64-rel.yaml

26–27

While the ABI says AARCH64 can have .rel/.rela relocation records, rela is what is consistently used. I think we should stick to .rela in the test as well.

Aside that, is there a way to check that the yaml2obj can check for the type of relocation records thats emitted by the tool ? If so I think it would be nice to have the feature as well.

[stewartd]

Updated the test to use rela.

[atanasyan]

LGTM

[mcrosier]

Committed in r221639.

lib/Object/ELFYAML.cpp

     ECase(R_386_IRELATIVE)
     ECase(R_386_NUM)
     break;
+  case ELF::EM_AARCH64:
+    ECase(R_AARCH64_NONE)
+    ECase(R_AARCH64_ABS64)
+    ECase(R_AARCH64_ABS32)
+    ECase(R_AARCH64_ABS16)
+    ECase(R_AARCH64_PREL64)
+    ECase(R_AARCH64_PREL32)
+    ECase(R_AARCH64_PREL16)
+    ECase(R_AARCH64_MOVW_UABS_G0)
+    ECase(R_AARCH64_MOVW_UABS_G0_NC)
+    ECase(R_AARCH64_MOVW_UABS_G1)
+    ECase(R_AARCH64_MOVW_UABS_G1_NC)
+    ECase(R_AARCH64_MOVW_UABS_G2)
+    ECase(R_AARCH64_MOVW_UABS_G2_NC)
+    ECase(R_AARCH64_MOVW_UABS_G3)
+    ECase(R_AARCH64_MOVW_SABS_G0)
+    ECase(R_AARCH64_MOVW_SABS_G1)
+    ECase(R_AARCH64_MOVW_SABS_G2)
+    ECase(R_AARCH64_LD_PREL_LO19)
+    ECase(R_AARCH64_ADR_PREL_LO21)
+    ECase(R_AARCH64_ADR_PREL_PG_HI21)
+    ECase(R_AARCH64_ADD_ABS_LO12_NC)
+    ECase(R_AARCH64_LDST8_ABS_LO12_NC)
+    ECase(R_AARCH64_TSTBR14)
+    ECase(R_AARCH64_CONDBR19)
+    ECase(R_AARCH64_JUMP26)
+    ECase(R_AARCH64_CALL26)
+    ECase(R_AARCH64_LDST16_ABS_LO12_NC)
+    ECase(R_AARCH64_LDST32_ABS_LO12_NC)
+    ECase(R_AARCH64_LDST64_ABS_LO12_NC)
+    ECase(R_AARCH64_LDST128_ABS_LO12_NC)
+    ECase(R_AARCH64_GOTREL64)
+    ECase(R_AARCH64_GOTREL32)
+    ECase(R_AARCH64_ADR_GOT_PAGE)
+    ECase(R_AARCH64_LD64_GOT_LO12_NC)
+    ECase(R_AARCH64_TLSLD_MOVW_DTPREL_G2)
+    ECase(R_AARCH64_TLSLD_MOVW_DTPREL_G1)
+    ECase(R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC)
+    ECase(R_AARCH64_TLSLD_MOVW_DTPREL_G0)
+    ECase(R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC)
+    ECase(R_AARCH64_TLSLD_ADD_DTPREL_HI12)
+    ECase(R_AARCH64_TLSLD_ADD_DTPREL_LO12)
+    ECase(R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC)
+    ECase(R_AARCH64_TLSLD_LDST8_DTPREL_LO12)
+    ECase(R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC)
+    ECase(R_AARCH64_TLSLD_LDST16_DTPREL_LO12)
+    ECase(R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC)
+    ECase(R_AARCH64_TLSLD_LDST32_DTPREL_LO12)
+    ECase(R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC)
+    ECase(R_AARCH64_TLSLD_LDST64_DTPREL_LO12)
+    ECase(R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC)
+    ECase(R_AARCH64_TLSIE_MOVW_GOTTPREL_G1)
+    ECase(R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC)
+    ECase(R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21)
+    ECase(R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC)
+    ECase(R_AARCH64_TLSIE_LD_GOTTPREL_PREL19)
+    ECase(R_AARCH64_TLSLE_MOVW_TPREL_G2)
+    ECase(R_AARCH64_TLSLE_MOVW_TPREL_G1)
+    ECase(R_AARCH64_TLSLE_MOVW_TPREL_G1_NC)
+    ECase(R_AARCH64_TLSLE_MOVW_TPREL_G0)
+    ECase(R_AARCH64_TLSLE_MOVW_TPREL_G0_NC)
+    ECase(R_AARCH64_TLSLE_ADD_TPREL_HI12)
+    ECase(R_AARCH64_TLSLE_ADD_TPREL_LO12)
+    ECase(R_AARCH64_TLSLE_ADD_TPREL_LO12_NC)
+    ECase(R_AARCH64_TLSLE_LDST8_TPREL_LO12)
+    ECase(R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC)
+    ECase(R_AARCH64_TLSLE_LDST16_TPREL_LO12)
+    ECase(R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC)
+    ECase(R_AARCH64_TLSLE_LDST32_TPREL_LO12)
+    ECase(R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC)
+    ECase(R_AARCH64_TLSLE_LDST64_TPREL_LO12)
+    ECase(R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC)
+    ECase(R_AARCH64_TLSDESC_ADR_PAGE)
+    ECase(R_AARCH64_TLSDESC_LD64_LO12_NC)
+    ECase(R_AARCH64_TLSDESC_ADD_LO12_NC)
+    ECase(R_AARCH64_TLSDESC_CALL)
+    ECase(R_AARCH64_COPY)
+    ECase(R_AARCH64_GLOB_DAT)
+    ECase(R_AARCH64_JUMP_SLOT)
+    ECase(R_AARCH64_RELATIVE)
+    ECase(R_AARCH64_TLS_DTPREL64)
+    ECase(R_AARCH64_TLS_DTPMOD64)
+    ECase(R_AARCH64_TLS_TPREL64)
+    ECase(R_AARCH64_TLSDESC)
+    ECase(R_AARCH64_IRELATIVE)
+    break;
   default:
     llvm_unreachable("Unsupported architecture");
   }

test/Object/AArch64/yaml2obj-elf-aarch64-rel.yaml

+# RUN: yaml2obj -format=elf %s > %t
+# RUN: obj2yaml  %t | FileCheck %s
+
+# CHECK:      - Name:            .rel.text
+# CHECK-NEXT:   Type:            SHT_REL
+# CHECK-NEXT:    Link:            .symtab
+# CHECK-NEXT:    AddressAlign:    0x0000000000000008
+# CHECK-NEXT:    Info:            .text
+# CHECK-NEXT:    Relocations:     
+# CHECK-NEXT:      - Offset:          0x0000000000000000
+# CHECK-NEXT:        Symbol:          main
+# CHECK-NEXT:        Type:            R_AARCH64_ABS64
+# CHECK-NEXT:        Addend:          0
+
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  Type:            ET_REL
+  Machine:         EM_AARCH64
+Sections:
+  - Type:            SHT_PROGBITS
+    Name:            .text
+    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
+    AddressAlign:    0x04
+    Content:         0000000000000000
+  - Type:            SHT_REL
+    Name:            .rel.text
+    Link:            .symtab
+    Info:            .text
+    AddressAlign:    0x08
+    Relocations:
+      - Offset:          0
+        Symbol:          main
+        Type:            R_AARCH64_ABS64
+
+Symbols:
+  Local:
+    - Name:            .text
+      Type:            STT_SECTION
+      Section:         .text
+
+  Global:
+    - Name:            main
+      Type:            STT_FUNC
+      Section:         .text
+      Size:            0x08