[PATCH] D132019: [Object] Support LoongArch in RelocationResolver

[Lu Weining via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG0ce24da0e134: [Object] Support LoongArch in RelocationResolver (authored by WANG Xuerui <git at xen0n.name>, committed by SixWeining).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D132019/new/

https://reviews.llvm.org/D132019

Files:
  llvm/lib/Object/RelocationResolver.cpp


Index: llvm/lib/Object/RelocationResolver.cpp
===================================================================
--- llvm/lib/Object/RelocationResolver.cpp
+++ llvm/lib/Object/RelocationResolver.cpp
@@ -511,6 +511,58 @@
   }
 }
 
+static bool supportsLoongArch(uint64_t Type) {
+  switch (Type) {
+  case ELF::R_LARCH_NONE:
+  case ELF::R_LARCH_32:
+  case ELF::R_LARCH_32_PCREL:
+  case ELF::R_LARCH_64:
+  case ELF::R_LARCH_ADD8:
+  case ELF::R_LARCH_SUB8:
+  case ELF::R_LARCH_ADD16:
+  case ELF::R_LARCH_SUB16:
+  case ELF::R_LARCH_ADD32:
+  case ELF::R_LARCH_SUB32:
+  case ELF::R_LARCH_ADD64:
+  case ELF::R_LARCH_SUB64:
+    return true;
+  default:
+    return false;
+  }
+}
+
+static uint64_t resolveLoongArch(uint64_t Type, uint64_t Offset, uint64_t S,
+                                 uint64_t LocData, int64_t Addend) {
+  switch (Type) {
+  case ELF::R_LARCH_NONE:
+    return LocData;
+  case ELF::R_LARCH_32:
+    return (S + Addend) & 0xFFFFFFFF;
+  case ELF::R_LARCH_32_PCREL:
+    return (S + Addend - Offset) & 0xFFFFFFFF;
+  case ELF::R_LARCH_64:
+    return S + Addend;
+  case ELF::R_LARCH_ADD8:
+    return (LocData + (S + Addend)) & 0xFF;
+  case ELF::R_LARCH_SUB8:
+    return (LocData - (S + Addend)) & 0xFF;
+  case ELF::R_LARCH_ADD16:
+    return (LocData + (S + Addend)) & 0xFFFF;
+  case ELF::R_LARCH_SUB16:
+    return (LocData - (S + Addend)) & 0xFFFF;
+  case ELF::R_LARCH_ADD32:
+    return (LocData + (S + Addend)) & 0xFFFFFFFF;
+  case ELF::R_LARCH_SUB32:
+    return (LocData - (S + Addend)) & 0xFFFFFFFF;
+  case ELF::R_LARCH_ADD64:
+    return (LocData + (S + Addend));
+  case ELF::R_LARCH_SUB64:
+    return (LocData - (S + Addend));
+  default:
+    llvm_unreachable("Invalid relocation type");
+  }
+}
+
 static bool supportsCOFFX86(uint64_t Type) {
   switch (Type) {
   case COFF::IMAGE_REL_I386_SECREL:
@@ -711,6 +763,8 @@
       case Triple::bpfel:
       case Triple::bpfeb:
         return {supportsBPF, resolveBPF};
+      case Triple::loongarch64:
+        return {supportsLoongArch, resolveLoongArch};
       case Triple::mips64el:
       case Triple::mips64:
         return {supportsMips64, resolveMips64};
@@ -747,6 +801,8 @@
       return {supportsAVR, resolveAVR};
     case Triple::lanai:
       return {supportsLanai, resolveLanai};
+    case Triple::loongarch32:
+      return {supportsLoongArch, resolveLoongArch};
     case Triple::mipsel:
     case Triple::mips:
       return {supportsMips32, resolveMips32};


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D132019.455788.patch
Type: text/x-patch
Size: 2476 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20220826/afec7df4/attachment.bin>