#

# Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

#

# This code is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 2 only, as

# published by the Free Software Foundation.  Oracle designates this

# particular file as subject to the "Classpath" exception as provided

# by Oracle in the LICENSE file that accompanied this code.

#

# This code is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

# version 2 for more details (a copy is included in the LICENSE file that

# accompanied this code).

#

# You should have received a copy of the GNU General Public License version

# 2 along with this work; if not, write to the Free Software Foundation,

# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

#

# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

# or visit www.oracle.com if you need additional information or have any

# questions.

#

# Include support files that will setup compiler flags due to the selected

# jvm feature set, specific file overrides, and general flags.

include lib/JvmFeatures.gmk

include lib/JvmOverrideFiles.gmk

include lib/JvmFlags.gmk

# Include support files that will setup DTRACE_EXTRA_OBJECT_FILES.

include lib/JvmDtraceObjects.gmk

################################################################################

# Setup compilation of the main Hotspot native library (libjvm).

JVM_OUTPUTDIR := $(JVM_VARIANT_OUTPUTDIR)/libjvm

JVM_MAPFILE := $(JVM_OUTPUTDIR)/mapfile

################################################################################

# Platform independent setup

JVM_LDFLAGS += \

    $(SHARED_LIBRARY_FLAGS) \

    $(JVM_LDFLAGS_FEATURES) \

    $(EXTRA_LDFLAGS) \

    #

JVM_ASFLAGS += $(EXTRA_ASFLAGS)

JVM_LIBS += \

    $(JVM_LIBS_FEATURES) \

    #

# These files and directories are always excluded

JVM_EXCLUDE_FILES += args.cc

JVM_EXCLUDES += adlc

# Needed by vm_version.cpp

ifeq ($(call isTargetCpu, x86_64), true)

  OPENJDK_TARGET_CPU_VM_VERSION := amd64

else ifeq ($(call isTargetCpu, sparcv9), true)

  OPENJDK_TARGET_CPU_VM_VERSION := sparc

else

  OPENJDK_TARGET_CPU_VM_VERSION := $(OPENJDK_TARGET_CPU)

endif

CFLAGS_VM_VERSION := \

    $(VERSION_CFLAGS) \

    -DHOTSPOT_VERSION_STRING='"$(VERSION_STRING)"' \

    -DDEBUG_LEVEL='"$(DEBUG_LEVEL)"' \

    -DHOTSPOT_BUILD_USER='"$(USERNAME)"' \

    -DHOTSPOT_VM_DISTRO='"$(HOTSPOT_VM_DISTRO)"' \

    -DCPU='"$(OPENJDK_TARGET_CPU_VM_VERSION)"' \

    #

################################################################################

# Disabled warnings

DISABLED_WARNINGS_gcc := parentheses comment unknown-pragmas address \

    delete-non-virtual-dtor char-subscripts array-bounds int-in-bool-context \

    ignored-qualifiers  missing-field-initializers implicit-fallthrough \

    empty-body strict-overflow sequence-point maybe-uninitialized \

    misleading-indentation cast-function-type

ifeq ($(call check-jvm-feature, zero), true)

  DISABLED_WARNINGS_gcc += return-type switch clobbered

endif

DISABLED_WARNINGS_clang := tautological-compare \

    undefined-var-template sometimes-uninitialized unknown-pragmas \

    delete-non-virtual-dtor missing-braces char-subscripts \

    ignored-qualifiers missing-field-initializers mismatched-tags

DISABLED_WARNINGS_solstudio := labelnotused hidef w_novirtualdescr inlafteruse \

    unknownpragma doubunder w_enumnotused w_toomanyenumnotused \

    wvarhidenmem wunreachable wnoretvalue notemsource

DISABLED_WARNINGS_xlc := tautological-compare shift-negative-value

DISABLED_WARNINGS_microsoft :=

################################################################################

# Platform specific setup

# ARM source selection

ifeq ($(call And, $(call isTargetOs, linux) $(call isTargetCpu, arm)), true)

  JVM_EXCLUDE_PATTERNS += arm_64

else ifeq ($(call And, $(call isTargetOs, linux) $(call isTargetCpu, aarch64)), true)

  # For 64-bit arm builds, we use the 64 bit hotspot/src/cpu/arm

  # hotspot sources if HOTSPOT_TARGET_CPU_ARCH is set to arm.

  # Exclude the aarch64 and 32 bit arm files for this build.

  ifeq ($(HOTSPOT_TARGET_CPU_ARCH), arm)

    JVM_EXCLUDE_PATTERNS += arm_32 aarch64

  endif

endif

ifeq ($(call isTargetOs, linux macosx windows), true)

  JVM_PRECOMPILED_HEADER := $(TOPDIR)/src/hotspot/share/precompiled/precompiled.hpp

endif

ifeq ($(call isTargetCpu, x86), true)

  JVM_EXCLUDE_PATTERNS += x86_64

else ifeq ($(call isTargetCpu, x86_64), true)

  JVM_EXCLUDE_PATTERNS += x86_32

endif

# Inline assembly for solaris

ifeq ($(call isTargetOs, solaris), true)

  ifeq ($(call isTargetCpu, x86_64), true)

    JVM_CFLAGS += $(TOPDIR)/src/hotspot/os_cpu/solaris_x86/solaris_x86_64.il

  else ifeq ($(call isTargetCpu, sparcv9), true)

    JVM_CFLAGS += $(TOPDIR)/src/hotspot/os_cpu/solaris_sparc/solaris_sparc.il

  endif

  # Exclude warnings in devstudio 12.6

  ifeq ($(CC_VERSION_NUMBER), 5.15)

    DISABLED_WARNINGS_solstudio += SEC_ARR_OUTSIDE_BOUND_READ \

      SEC_ARR_OUTSIDE_BOUND_WRITE

  endif

endif

ifeq ($(call And, $(call isTargetOs, solaris) $(call isTargetCpu, sparcv9)), true)

  ifeq ($(COMPILE_WITH_DEBUG_SYMBOLS), false)

    # NOTE: In the old build, we weirdly enough set -g/-g0 always, regardless

    # of if debug symbols were needed. Without it, compilation fails on

    # sparc! :-(

    JVM_CFLAGS += -g0

  endif

endif

ifeq ($(call isTargetOs, windows), true)

  ifeq ($(call isTargetCpuBits, 64), true)

    RC_DESC := 64-Bit$(SPACE)

  endif

  JVM_RCFLAGS += -D"HS_FILEDESC=$(HOTSPOT_VM_DISTRO) $(RC_DESC)$(JVM_VARIANT) VM"

endif

JVM_OPTIMIZATION ?= HIGHEST_JVM

# Need to set JVM_STRIPFLAGS to the default value from SPEC since the STRIPFLAGS

# parameter to SetupNativeCompilation allows an empty value to override the

# default.

JVM_STRIPFLAGS ?= $(STRIPFLAGS)

# This source set is reused so save in cache.

$(call FillFindCache, $(JVM_SRC_DIRS))

################################################################################

# Now set up the actual compilation of the main hotspot native library

$(eval $(call SetupNativeCompilation, BUILD_LIBJVM, \

    NAME := jvm, \

    TOOLCHAIN := TOOLCHAIN_LINK_CXX, \

    OUTPUT_DIR := $(JVM_LIB_OUTPUTDIR), \

    SRC := $(JVM_SRC_DIRS), \

    EXCLUDES := $(JVM_EXCLUDES), \

    EXCLUDE_FILES := $(JVM_EXCLUDE_FILES), \

    EXCLUDE_PATTERNS := $(JVM_EXCLUDE_PATTERNS), \

    EXTRA_OBJECT_FILES := $(DTRACE_EXTRA_OBJECT_FILES), \

    CFLAGS := $(JVM_CFLAGS), \

    vm_version.cpp_CXXFLAGS := $(CFLAGS_VM_VERSION), \

    arguments.cpp_CXXFLAGS := $(CFLAGS_VM_VERSION), \

    DISABLED_WARNINGS_gcc := $(DISABLED_WARNINGS_gcc), \

    DISABLED_WARNINGS_clang := $(DISABLED_WARNINGS_clang), \

    DISABLED_WARNINGS_solstudio := $(DISABLED_WARNINGS_solstudio), \

    DISABLED_WARNINGS_xlc := $(DISABLED_WARNINGS_xlc), \

    DISABLED_WARNINGS_microsoft := $(DISABLED_WARNINGS_microsoft), \

    ASFLAGS := $(JVM_ASFLAGS), \

    LDFLAGS := $(JVM_LDFLAGS), \

    LIBS := $(JVM_LIBS), \

    OPTIMIZATION := $(JVM_OPTIMIZATION), \

    OBJECT_DIR := $(JVM_OUTPUTDIR)/objs, \

    MAPFILE := $(JVM_MAPFILE), \

    USE_MAPFILE_FOR_SYMBOLS := true, \

    STRIPFLAGS := $(JVM_STRIPFLAGS), \

    EMBED_MANIFEST := true, \

    RC_FLAGS := $(JVM_RCFLAGS), \

    VERSIONINFO_RESOURCE := $(TOPDIR)/src/hotspot/os/windows/version.rc, \

    PRECOMPILED_HEADER := $(JVM_PRECOMPILED_HEADER), \

    PRECOMPILED_HEADER_EXCLUDE := $(JVM_PRECOMPILED_HEADER_EXCLUDE), \

    DEFINE_THIS_FILE := false, \

))

# Always recompile 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.

VM_VERSION_OBJ := $(JVM_OUTPUTDIR)/objs/vm_version$(OBJ_SUFFIX)

$(VM_VERSION_OBJ): $(filter-out $(VM_VERSION_OBJ) $(JVM_MAPFILE), \

    $(BUILD_LIBJVM_TARGET_DEPS))

ifneq ($(GENERATE_COMPILE_COMMANDS_ONLY), true)

  ifeq ($(call isTargetOs, windows), true)

    # It doesn't matter which jvm.lib file gets exported, but we need

    # to pick just one.

    ifeq ($(JVM_VARIANT), $(JVM_VARIANT_MAIN))

      $(eval $(call SetupCopyFiles, COPY_JVM_LIB, \

          DEST := $(LIB_OUTPUTDIR), \

          FILES :=$(BUILD_LIBJVM_IMPORT_LIBRARY), \

      ))

      TARGETS += $(COPY_JVM_LIB)

    endif

  endif

endif

# AIX warning explanation:

# 1500-010  : (W) WARNING in ...: Infinite loop.  Program may not stop.

#             There are several infinite loops in the vm, so better suppress.

# 1540-0198 : (W) The omitted keyword "private" is assumed for base class "...".

# 1540-0216 : (W) An expression of type .. cannot be converted to type ..

#             In hotspot this fires for functionpointer to pointer conversions

# 1540-1088 : (W) The exception specification is being ignored.

#             In hotspot this is caused by throw() in declaration of new() in nmethod.hpp.

# 1540-1090 : (I) The destructor of "..." might not be called.

# 1540-1639 : (I) The behavior of long type bit fields has changed ...

# Include mapfile generation. It relies on BUILD_LIBJVM_ALL_OBJS which is only

# defined after the above call to BUILD_LIBJVM. Mapfile will be generated

# after all object files are built, but before the jvm library is linked.

include lib/JvmMapfile.gmk

TARGETS += $(BUILD_LIBJVM)

################################################################################

# Hotspot disallows the use of global operators 'new' and 'delete'. This build

# time check helps enforce this requirement. If you trigger this check and the

# reference is not obvious from the source, GNU objdump can be used to help find

# the reference if compiled with GCC:

#

# objdump -lrdSC <path/to/file.o>

#

# -C demangle

# -d disassemble

# -r print relocation entries, interspersed with the disassembly

# -S print source code, intermixed with disassembly

# -l include filenames and line numbers

#

# Search the output for the operator(s) of interest, to see where they are

# referenced.

#

# When a reference to the global 'operator delete' is reported, it might be

# due to a "deleting destructor".  In this case, objdump may show the

# reference to be associated with but not actually in a destructor.  A

# deleting destructor is automatically generated for a class whose destructor

# is virtual.  A deleting destructor requires an accessible 'operator delete'

# for the associated class.  If the class doesn't provide a more specific

# declaration (either directly or by inheriting from a class that provides

# one) then the global definition will be used, triggering this check.

ifneq ($(GENERATE_COMPILE_COMMANDS_ONLY), true)

  ifneq ($(filter $(TOOLCHAIN_TYPE), gcc clang solstudio), )

    DEMANGLED_REGEXP := [^:]operator (new|delete)

    # Running c++filt to find offending symbols in all files is too expensive,

    # especially on Solaris, so use mangled names when looking for symbols.

    # Save the demangling for when something is actually found.

    ifeq ($(TOOLCHAIN_TYPE), solstudio)

      MANGLED_SYMS := \

          __1c2n6FL_pv_ \

          __1c2N6FL_pv_ \

          __1c2k6Fpv_v_ \

          __1c2K6Fpv_v_ \

          #

      UNDEF_PATTERN := UNDEF

    else

      MANGLED_SYMS := \

          _ZdaPv \

          _ZdlPv \

          _Znam \

          _Znwm \

          #

      UNDEF_PATTERN := ' U '

    endif

    define SetupOperatorNewDeleteCheck

        $1.op_check: $1

	  if [ -n "`$(NM) $$< | $(GREP) $(addprefix -e , $(MANGLED_SYMS)) \

	      | $(GREP) $(UNDEF_PATTERN)`" ]; then \

	    $(ECHO) "$$<: Error: Use of global operators new and delete is not allowed in Hotspot:"; \

	    $(NM) $$< | $(CXXFILT) | $(EGREP) '$(DEMANGLED_REGEXP)' | $(GREP) $(UNDEF_PATTERN); \

	    $(ECHO) "See: $(TOPDIR)/make/hotspot/lib/CompileJvm.gmk"; \

	    exit 1; \

	  fi

	  $(TOUCH) $$@

      TARGETS += $1.op_check

    endef

    $(foreach o, $(BUILD_LIBJVM_ALL_OBJS), $(eval $(call SetupOperatorNewDeleteCheck,$o)))

  endif

endif