openjdk-17/downgrade-the-glibc-symver-of-memcpy.patch

From 9771982512066b47e42084ac61f714a6d8da5d6d Mon Sep 17 00:00:00 2001
Date: Sat, 30 Nov 2024 17:25:24 +0800
Subject: downgrade the glibc symver of memcpy

---
 make/common/NativeCompilation.gmk             |  9 +++++++++
 make/hotspot/lib/CompileJvm.gmk               | 15 ++++++++++++++
 src/hotspot/share/runtime/memcpy.cpp          | 20 +++++++++++++++++++
 .../linux/native/applauncher/LinuxPackage.c   |  3 +++
 4 files changed, 47 insertions(+)
 create mode 100644 src/hotspot/share/runtime/memcpy.cpp

diff --git a/make/common/NativeCompilation.gmk b/make/common/NativeCompilation.gmk
index 215d90d17..01c47dbb0 100644
--- a/make/common/NativeCompilation.gmk
+++ b/make/common/NativeCompilation.gmk
@@ -1133,6 +1133,15 @@ define SetupNativeCompilationBody
       endif
     endif
 
+    # if ldflags contain --wrap=memcpy, add memcpy.o to OBJS
+    ifneq ($$(findstring wrap=memcpy, $$($1_LDFLAGS)$$($1_EXTRA_LDFLAGS)),)
+      ifeq ($$(findstring memcpy$(OBJ_SUFFIX), $$($1_ALL_OBJS)),)
+        $$($1_BUILD_INFO):
+	    $(ECHO) 'Adding $(SUPPORT_OUTPUTDIR)/memcpy/memcpy$(OBJ_SUFFIX) to $1_ALL_OBJS'
+        $1_ALL_OBJS += $(SUPPORT_OUTPUTDIR)/memcpy/memcpy$(OBJ_SUFFIX)
+      endif
+    endif
+
     $1_VARDEPS := $$($1_LD) $$($1_SYSROOT_LDFLAGS) $$($1_LDFLAGS) $$($1_EXTRA_LDFLAGS) \
         $$($1_LIBS) $$($1_EXTRA_LIBS) $$($1_MT) \
         $$($1_CREATE_DEBUGINFO_CMDS) $$($1_MANIFEST_VERSION) \
diff --git a/make/hotspot/lib/CompileJvm.gmk b/make/hotspot/lib/CompileJvm.gmk
index 230aa54f7..93af36d93 100644
--- a/make/hotspot/lib/CompileJvm.gmk
+++ b/make/hotspot/lib/CompileJvm.gmk
@@ -83,6 +83,13 @@ DISABLED_WARNINGS_gcc := parentheses comment unknown-pragmas address \
     empty-body strict-overflow sequence-point maybe-uninitialized \
     misleading-indentation cast-function-type shift-negative-value
 
+ifeq ($(DEBUG_LEVEL), fastdebug)
+  ifeq ($(call And, $(call isTargetOs, linux) $(call isTargetCpu, aarch64)), true)
+    # False positive warnings for atomic_linux_aarch64.hpp on GCC >= 12
+    DISABLED_WARNINGS_gcc += stringop-overflow
+  endif
+endif
+
 ifeq ($(call check-jvm-feature, zero), true)
   DISABLED_WARNINGS_gcc += return-type switch clobbered
 endif
@@ -169,6 +176,14 @@ $(eval $(call SetupJdkLibrary, BUILD_LIBJVM, \
     PRECOMPILED_HEADER_EXCLUDE := $(JVM_PRECOMPILED_HEADER_EXCLUDE), \
 ))
 
+MEMCPY_OBJECT_FILE := $(JVM_OUTPUTDIR)/objs/memcpy$(OBJ_SUFFIX)
+
+$(eval $(call SetupCopyFiles, COPY_MEMCPY_OBJECT_FILE, \
+          DEST := $(SUPPORT_OUTPUTDIR)/memcpy, \
+          FILES :=$(MEMCPY_OBJECT_FILE), \
+))
+TARGETS += $(COPY_MEMCPY_OBJECT_FILE)
+
 # Always recompile abstract_vm_version.cpp if libjvm needs to be relinked. This ensures
 # that the internal vm version is updated as it relies on __DATE__ and __TIME__
 # macros.
diff --git a/src/hotspot/share/runtime/memcpy.cpp b/src/hotspot/share/runtime/memcpy.cpp
new file mode 100644
index 000000000..6ab4ddb64
--- /dev/null
+++ b/src/hotspot/share/runtime/memcpy.cpp
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) Huawei Technologies Co., Ltd. 2018-2021. All rights reserved.
+ */
+
+#if defined( __GNUC__ ) && \
+(__GNUC__ >= 5  ||  (__GNUC__ == 4  &&  __GNUC_MINOR__ >= 7))
+#include <string.h>
+
+#if (defined AMD64) || (defined amd64)
+/* some systems do not have newest memcpy@@GLIBC_2.14 - stay with old good one */
+asm (".symver memcpy, memcpy@GLIBC_2.2.5");
+
+extern "C"{
+  void *__wrap_memcpy(void *dest, const void *src, size_t n)
+  {
+    return memcpy(dest, src, n);
+  }
+}
+#endif
+#endif
diff --git a/src/jdk.jpackage/linux/native/applauncher/LinuxPackage.c b/src/jdk.jpackage/linux/native/applauncher/LinuxPackage.c
index 26d65f806..b7b114ac3 100644
--- a/src/jdk.jpackage/linux/native/applauncher/LinuxPackage.c
+++ b/src/jdk.jpackage/linux/native/applauncher/LinuxPackage.c
@@ -34,6 +34,9 @@
 #include "JvmLauncher.h"
 #include "LinuxPackage.h"
 
+#if (defined AMD64) || (defined amd64)
+__asm__(".symver memcpy, memcpy@GLIBC_2.2.5");
+#endif
 
 static char* getModulePath(void) {
     char modulePath[PATH_MAX] = { 0 };
-- 
2.33.0