[ARC] Prepare the implementation of relocation for LLD

Reviewers: ruiu, kparzysz, petecoup, rafael

Reviewed By: kparzysz

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D37556

llvm-svn: 313109

include/llvm/BinaryFormat/ELF.h

@@ -430,6 +430,27 @@ enum {
 #include "ELFRelocs/ARM.def"
 };
 
+// ARC Specific e_flags
+enum : unsigned {
+  EF_ARC_MACH_MSK = 0x000000ff,
+  EF_ARC_OSABI_MSK = 0x00000f00,
+  E_ARC_MACH_ARC600 = 0x00000002,
+  E_ARC_MACH_ARC601 = 0x00000004,
+  E_ARC_MACH_ARC700 = 0x00000003,
+  EF_ARC_CPU_ARCV2EM = 0x00000005,
+  EF_ARC_CPU_ARCV2HS = 0x00000006,
+  E_ARC_OSABI_ORIG = 0x00000000,
+  E_ARC_OSABI_V2 = 0x00000200,
+  E_ARC_OSABI_V3 = 0x00000300,
+  E_ARC_OSABI_V4 = 0x00000400,
+  EF_ARC_PIC = 0x00000100
+};
+
+// ELF Relocation types for ARC
+enum {
+#include "ELFRelocs/ARC.def"
+};
+
 // AVR specific e_flags
 enum : unsigned {
   EF_AVR_ARCH_AVR1 = 1,

include/llvm/BinaryFormat/ELFRelocs/ARC.def

@@ -0,0 +1,74 @@
+
+#ifndef ELF_RELOC
+#error "ELF_RELOC must be defined"
+#endif
+
+ELF_RELOC(R_ARC_NONE,                  0)
+ELF_RELOC(R_ARC_8,                     1)
+ELF_RELOC(R_ARC_16,                    2)
+ELF_RELOC(R_ARC_24,                    3)
+ELF_RELOC(R_ARC_32,                    4)
+ELF_RELOC(R_ARC_N8,                    8)
+ELF_RELOC(R_ARC_N16,                   9)
+ELF_RELOC(R_ARC_N24,                  10)
+ELF_RELOC(R_ARC_N32,                  11)
+ELF_RELOC(R_ARC_SDA,                  12)
+ELF_RELOC(R_ARC_SECTOFF,              13)
+ELF_RELOC(R_ARC_S21H_PCREL,           14)
+ELF_RELOC(R_ARC_S21W_PCREL,           15)
+ELF_RELOC(R_ARC_S25H_PCREL,           16)
+ELF_RELOC(R_ARC_S25W_PCREL,           17)
+ELF_RELOC(R_ARC_SDA32,                18)
+ELF_RELOC(R_ARC_SDA_LDST,             19)
+ELF_RELOC(R_ARC_SDA_LDST1,            20)
+ELF_RELOC(R_ARC_SDA_LDST2,            21)
+ELF_RELOC(R_ARC_SDA16_LD,             22)
+ELF_RELOC(R_ARC_SDA16_LD1,            23)
+ELF_RELOC(R_ARC_SDA16_LD2,            24)
+ELF_RELOC(R_ARC_S13_PCREL,            25)
+ELF_RELOC(R_ARC_W,                    26)
+ELF_RELOC(R_ARC_32_ME,                27)
+ELF_RELOC(R_ARC_32_ME_S,             105)
+ELF_RELOC(R_ARC_N32_ME,               28)
+ELF_RELOC(R_ARC_SECTOFF_ME,           29)
+ELF_RELOC(R_ARC_SDA32_ME,             30)
+ELF_RELOC(R_ARC_W_ME,                 31)
+ELF_RELOC(R_AC_SECTOFF_U8,            35)
+ELF_RELOC(R_AC_SECTOFF_U8_1,          36)
+ELF_RELOC(R_AC_SECTOFF_U8_2,          37)
+ELF_RELOC(R_AC_SECTOFF_S9,            38)
+ELF_RELOC(R_AC_SECTOFF_S9_1,          39)
+ELF_RELOC(R_AC_SECTOFF_S9_2,          40)
+ELF_RELOC(R_ARC_SECTOFF_ME_1,         41)
+ELF_RELOC(R_ARC_SECTOFF_ME_2,         42)
+ELF_RELOC(R_ARC_SECTOFF_1,            43)
+ELF_RELOC(R_ARC_SECTOFF_2,            44)
+ELF_RELOC(R_ARC_SDA_12,               45)
+ELF_RELOC(R_ARC_SDA16_ST2,            48)
+ELF_RELOC(R_ARC_32_PCREL,             49)
+ELF_RELOC(R_ARC_PC32,                 50)
+ELF_RELOC(R_ARC_GOT32,                59)
+ELF_RELOC(R_ARC_GOTPC32,              51)
+ELF_RELOC(R_ARC_PLT32,                52)
+ELF_RELOC(R_ARC_COPY,                 53)
+ELF_RELOC(R_ARC_GLOB_DAT,             54)
+ELF_RELOC(R_ARC_JMP_SLOT,             55)
+ELF_RELOC(R_ARC_RELATIVE,             56)
+ELF_RELOC(R_ARC_GOTOFF,               57)
+ELF_RELOC(R_ARC_GOTPC,                58)
+ELF_RELOC(R_ARC_S21W_PCREL_PLT,       60)
+ELF_RELOC(R_ARC_S25H_PCREL_PLT,       61)
+ELF_RELOC(R_ARC_JLI_SECTOFF,          63)
+ELF_RELOC(R_ARC_TLS_DTPMOD,           66)
+ELF_RELOC(R_ARC_TLS_TPOFF,            68)
+ELF_RELOC(R_ARC_TLS_GD_GOT,           69)
+ELF_RELOC(R_ARC_TLS_GD_LD,            70)
+ELF_RELOC(R_ARC_TLS_GD_CALL,          71)
+ELF_RELOC(R_ARC_TLS_IE_GOT,           72)
+ELF_RELOC(R_ARC_TLS_DTPOFF,           67)
+ELF_RELOC(R_ARC_TLS_DTPOFF_S9,        73)
+ELF_RELOC(R_ARC_TLS_LE_S9,            74)
+ELF_RELOC(R_ARC_TLS_LE_32,            75)
+ELF_RELOC(R_ARC_S25W_PCREL_PLT,       76)
+ELF_RELOC(R_ARC_S21H_PCREL_PLT,       77)
+ELF_RELOC(R_ARC_NPS_CMEM16,           78)

include/llvm/module.modulemap

@@ -49,6 +49,7 @@ module LLVM_BinaryFormat {
     textual header "BinaryFormat/ELFRelocs/AArch64.def"
     textual header "BinaryFormat/ELFRelocs/AMDGPU.def"
     textual header "BinaryFormat/ELFRelocs/ARM.def"
+    textual header "BinaryFormat/ELFRelocs/ARC.def"
     textual header "BinaryFormat/ELFRelocs/AVR.def"
     textual header "BinaryFormat/ELFRelocs/BPF.def"
     textual header "BinaryFormat/ELFRelocs/Hexagon.def"

lib/Object/ELF.cpp

@@ -58,6 +58,14 @@ StringRef llvm::object::getELFRelocationTypeName(uint32_t Machine,
       break;
     }
     break;
+  case ELF::EM_ARC_COMPACT:
+  case ELF::EM_ARC_COMPACT2:
+    switch (Type) {
+#include "llvm/BinaryFormat/ELFRelocs/ARC.def"
+    default:
+      break;
+    }
+    break;
   case ELF::EM_AVR:
     switch (Type) {
 #include "llvm/BinaryFormat/ELFRelocs/AVR.def"

lib/ObjectYAML/ELFYAML.cpp

@@ -577,6 +577,9 @@ void ScalarEnumerationTraits<ELFYAML::ELF_REL>::enumeration(
   case ELF::EM_ARM:
 #include "llvm/BinaryFormat/ELFRelocs/ARM.def"
     break;
+  case ELF::EM_ARC:
+#include "llvm/BinaryFormat/ELFRelocs/ARC.def"
+    break;
   case ELF::EM_RISCV:
 #include "llvm/BinaryFormat/ELFRelocs/RISCV.def"
     break;