[LLDB][MIPS] Provide ABI string to compiler for appropriate code generation for MIPS
Patch by Nitesh Jain.
Summary: These patch will set clang::TargetOptions::ABI and accordingly code will be generated for MIPS target.
Reviewers: ovyalov, clayborg
Subscribers: lldb-commits, mohit.bhakkad, sagar, jaydeep, bhushan
Differential: D18638
llvm-svn: 269407
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
index ac48898..7c4d227 100644
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
@@ -286,7 +286,8 @@
lldb::LanguageType frame_lang = expr.Language(); // defaults to lldb::eLanguageTypeUnknown
bool overridden_target_opts = false;
lldb_private::LanguageRuntime *lang_rt = nullptr;
-
+
+ std::string abi;
ArchSpec target_arch;
target_arch = target_sp->GetArchitecture();
@@ -350,6 +351,11 @@
// This will be empty for any CPU that doesn't really need to make a special CPU string.
m_compiler->getTargetOpts().CPU = target_arch.GetClangTargetCPU();
+ // Set the target ABI
+ abi = GetClangTargetABI(target_arch);
+ if (!abi.empty())
+ m_compiler->getTargetOpts().ABI = abi;
+
// 3. Now allow the runtime to provide custom configuration options for the target.
// In this case, a specialized language runtime is available and we can query it for extra options.
// For 99% of use cases, this will not be needed and should be provided when basic platform detection is not enough.
@@ -658,6 +664,29 @@
return num_errors;
}
+std::string
+ClangExpressionParser::GetClangTargetABI (const ArchSpec &target_arch)
+{
+ std::string abi;
+ const llvm::Triple::ArchType machine = target_arch.GetMachine();
+
+ if(target_arch.IsMIPS())
+ {
+ switch (target_arch.GetFlags () & ArchSpec::eMIPSABI_mask)
+ {
+ case ArchSpec::eMIPSABI_N64:
+ abi = "n64"; break;
+ case ArchSpec::eMIPSABI_N32:
+ abi = "n32"; break;
+ case ArchSpec::eMIPSABI_O32:
+ abi = "o32"; break;
+ default:
+ break;
+ }
+ }
+ return abi;
+}
+
bool
ClangExpressionParser::RewriteExpression(DiagnosticManager &diagnostic_manager)
{