From: Inhwan Lee <ideal.lee@samsung.com>
Date: Tue, 25 Apr 2017 04:55:35 +0000 (+0900)
Subject: set env UNW_ARM_UNWIND_METHOD value on ARM platform
X-Git-Tag: accepted/tizen/unified/20170426.195625~2^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3b7059d73a89354e085156eda18af02892ecc828;p=platform%2Fcore%2Fdotnet%2Flauncher.git

set env UNW_ARM_UNWIND_METHOD value on ARM platform

Change-Id: Iab10502bc55f5bea33cf553a14838bdb56f6afd2
---

diff --git a/NativeLauncher/launcher/dotnet/dotnet_launcher.cc b/NativeLauncher/launcher/dotnet/dotnet_launcher.cc
index d3df80e..c0b5300 100644
--- a/NativeLauncher/launcher/dotnet/dotnet_launcher.cc
+++ b/NativeLauncher/launcher/dotnet/dotnet_launcher.cc
@@ -73,6 +73,20 @@ CoreRuntime::~CoreRuntime()
 
 int CoreRuntime::initialize(bool standalone)
 {
+#ifdef __arm__
+	// libunwind library is used to unwind stack frame, but libunwind for ARM
+	// does not support ARM vfpv3/NEON registers in DWARF format correctly.
+	// Therefore let's disable stack unwinding using DWARF information
+	// See https://github.com/dotnet/coreclr/issues/6698
+	//
+	// libunwind use following methods to unwind stack frame.
+	// UNW_ARM_METHOD_ALL          0xFF
+	// UNW_ARM_METHOD_DWARF        0x01
+	// UNW_ARM_METHOD_FRAME        0x02
+	// UNW_ARM_METHOD_EXIDX        0x04
+	putenv(const_cast<char *>("UNW_ARM_UNWIND_METHOD=6"));
+#endif // __arm__
+
 	if (standalone) {
 		const char *deviceApiDirectory = getenv("__deviceAPIDirectory");
 		const char *runtimeDirectory = getenv("__runtimeDirectory");
diff --git a/NativeLauncher/launcher/dotnet/scd_launcher.cc b/NativeLauncher/launcher/dotnet/scd_launcher.cc
index 029e93c..7bbd883 100644
--- a/NativeLauncher/launcher/dotnet/scd_launcher.cc
+++ b/NativeLauncher/launcher/dotnet/scd_launcher.cc
@@ -266,7 +266,7 @@ int executeManagedAssembly(const char* currentExeAbsolutePath,
 	// Indicates failure
 	int exitCode = -1;
 
-#ifdef _ARM_
+#ifdef __arm__
 	// libunwind library is used to unwind stack frame, but libunwind for ARM
 	// does not support ARM vfpv3/NEON registers in DWARF format correctly.
 	// Therefore let's disable stack unwinding using DWARF information
@@ -278,7 +278,7 @@ int executeManagedAssembly(const char* currentExeAbsolutePath,
 	// UNW_ARM_METHOD_FRAME			0x02
 	// UNW_ARM_METHOD_EXIDX			0x04
 	putenv(const_cast<char *>("UNW_ARM_UNWIND_METHOD=6"));
-#endif  // _ARM_
+#endif  // __arm__
 
 	std::string coreClrDllPath(clrFilesAbsolutePath);
 	coreClrDllPath.append("/");