Initial commit

nodejs/nodejs_glibc_thread_local_fix.patch

@@ -0,0 +1,50 @@
+From b9daef67624ac8e2dab0dcf8c82c2f864f76ee6a Mon Sep 17 00:00:00 2001
+From: Ben Noordhuis <info@bnoordhuis.nl>
+Date: Sat, 12 Aug 2017 14:28:06 +0200
+Subject: [PATCH] [wasm] Work around glibc thread-local storage bug
+
+glibc before 2.17 has a bug that makes it impossible to execute binaries
+that have single-byte thread-local variables:
+
+    % node --version
+    node: error while loading shared libraries: cannot allocate memory
+    in static TLS block
+
+Work around that by making the one instance in the V8 code base an int.
+
+See: https://sourceware.org/bugzilla/show_bug.cgi?id=14898
+See: https://github.com/nodesource/distributions/issues/513
+See: https://github.com/nodejs/build/pull/809
+Change-Id: Iefd8009100cd93e26cf8dc5dc03f2d622b423385
+---
+
+diff --git a/deps/v8/src/trap-handler/handler-shared.cc b/deps/v8/src/trap-handler/handler-shared.cc
+index 7b399f5..242fcba 100644
+--- a/deps/v8/src/trap-handler/handler-shared.cc
++++ b/deps/v8/src/trap-handler/handler-shared.cc
+@@ -23,7 +23,11 @@
+ namespace internal {
+ namespace trap_handler {
+ 
+-THREAD_LOCAL bool g_thread_in_wasm_code = false;
++THREAD_LOCAL int g_thread_in_wasm_code = false;
++
++static_assert(sizeof(g_thread_in_wasm_code) > 1,
++              "sizeof(thread_local_var) must be > 1, see "
++              "https://sourceware.org/bugzilla/show_bug.cgi?id=14898");
+ 
+ size_t gNumCodeObjects = 0;
+ CodeProtectionInfoListEntry* gCodeObjects = nullptr;
+diff --git a/deps/v8/src/trap-handler/trap-handler.h b/deps/v8/src/trap-handler/trap-handler.h
+index 5494c5f..ed94599 100644
+--- a/deps/v8/src/trap-handler/trap-handler.h
++++ b/deps/v8/src/trap-handler/trap-handler.h
+@@ -65,7 +65,7 @@
+   return FLAG_wasm_trap_handler && V8_TRAP_HANDLER_SUPPORTED;
+ }
+ 
+-extern THREAD_LOCAL bool g_thread_in_wasm_code;
++extern THREAD_LOCAL int g_thread_in_wasm_code;
+ 
+ inline bool IsThreadInWasm() { return g_thread_in_wasm_code; }
+