[lldb][LoongArch] Function calls support in lldb expressions

This patch adds desired feature flags in JIT compiler to enable
hard-float instructions if target supports them and allows to use floats
and doubles in lldb expressions.

Fited tests:
lldb-shell :: Expr/TestAnonNamespaceParamFunc.cpp
lldb-shell :: Expr/TestIRMemoryMap.test
lldb-shell :: Expr/TestStringLiteralExpr.test
lldb-shell :: SymbolFile/DWARF/debug-types-expressions.test

Similar as #99336
Depens on: https://github.com/llvm/llvm-project/pull/114741

Reviewed By: SixWeining

Pull Request: https://github.com/llvm/llvm-project/pull/114742

1 files changed, 17 insertions, 0 deletions

diff --git a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
index 10d0966..9c7dff8 100644
--- a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
+++ b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
@@ -1436,6 +1436,23 @@ size_t ObjectFileELF::GetSectionHeaderInfo(SectionHeaderColl &section_headers,
     arch_spec.SetFlags(flags);
   }
 
+  if (arch_spec.GetMachine() == llvm::Triple::loongarch32 ||
+      arch_spec.GetMachine() == llvm::Triple::loongarch64) {
+    uint32_t flags = arch_spec.GetFlags();
+    switch (header.e_flags & llvm::ELF::EF_LOONGARCH_ABI_MODIFIER_MASK) {
+    case llvm::ELF::EF_LOONGARCH_ABI_SINGLE_FLOAT:
+      flags |= ArchSpec::eLoongArch_abi_single_float;
+      break;
+    case llvm::ELF::EF_LOONGARCH_ABI_DOUBLE_FLOAT:
+      flags |= ArchSpec::eLoongArch_abi_double_float;
+      break;
+    case llvm::ELF::EF_LOONGARCH_ABI_SOFT_FLOAT:
+      break;
+    }
+
+    arch_spec.SetFlags(flags);
+  }
+
   // If there are no section headers we are done.
   if (header.e_shnum == 0)
     return 0;