Add support to detect arm hard float ABI based binaries for ABISysV_arm

This patch adds logic to detect if underlying binary is using arm hard float abi and use that information while handling return values in ABISysV_arm.

Differential revision: http://reviews.llvm.org/D16627

llvm-svn: 259885

1 files changed, 9 insertions, 0 deletions

diff --git a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
index 67be1461d4d..61e5896b862 100644
--- a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
+++ b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
@@ -1562,6 +1562,15 @@ ObjectFileELF::GetSectionHeaderInfo(SectionHeaderColl &section_headers,
         }
     }
 
+    if (arch_spec.GetMachine() == llvm::Triple::arm ||
+        arch_spec.GetMachine() == llvm::Triple::thumb)
+    {
+        if (header.e_flags & llvm::ELF::EF_ARM_SOFT_FLOAT)
+            arch_spec.SetFlags (ArchSpec::eARM_abi_soft_float);
+        else if (header.e_flags & llvm::ELF::EF_ARM_VFP_FLOAT)
+            arch_spec.SetFlags (ArchSpec::eARM_abi_hard_float);
+    }
+
     // If there are no section headers we are done.
     if (header.e_shnum == 0)
         return 0;