#

# Copyright (c) 2013, 2018, 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.

#

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

# Gensrc support for dtrace. The files generated here are included by dtrace.hpp

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

  ifeq ($(OPENJDK_TARGET_OS), solaris)

    DTRACE_FLAGS := -64

    DTRACE_CPP_FLAGS := -D_LP64

  else ifeq ($(OPENJDK_TARGET_OS), macosx)

    DTRACE_CPP_FLAGS := -D_LP64 -x c

  else ifeq ($(OPENJDK_TARGET_OS), linux)

    DTRACE_CPP_FLAGS := -x c

  endif

  DTRACE_SOURCE_DIR := $(TOPDIR)/src/hotspot/os/posix/dtrace

  DTRACE_GENSRC_DIR := $(JVM_VARIANT_OUTPUTDIR)/gensrc/dtracefiles

  # Make sure we run our selected compiler for preprocessing instead of letting

  # the dtrace tool pick it on it's own.

  $(DTRACE_GENSRC_DIR)/%.h: $(DTRACE_SOURCE_DIR)/%.d

	$(call LogInfo, Generating dtrace header file $(@F))

	$(call MakeDir, $(@D) $(DTRACE_SUPPORT_DIR))

	$(call ExecuteWithLog, $(DTRACE_SUPPORT_DIR)/$(@F).d, \

	    ($(CPP) $(DTRACE_CPP_FLAGS) $< > $(DTRACE_SUPPORT_DIR)/$(@F).d))

	$(call ExecuteWithLog, $@, $(DTRACE) $(DTRACE_FLAGS) -h -o $@ -s $(DTRACE_SUPPORT_DIR)/$(@F).d)

  # Process all .d files in DTRACE_SOURCE_DIR. They are:

  # hotspot_jni.d hotspot.d hs_private.d

  TARGETS += $(patsubst $(DTRACE_SOURCE_DIR)/%.d, \

      $(DTRACE_GENSRC_DIR)/%.h, $(wildcard $(DTRACE_SOURCE_DIR)/*.d))

  ifeq ($(OPENJDK_TARGET_OS), solaris)

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

    # First we need to generate the dtraceGenOffsets tool. When run, this will

    # produce two header files and a C++ file. Note that generateJvmOffsets.cpp

    # is using the same JVM_CFLAGS as libjvm.so.

    # Include support files that will setup JVM compiler flags.

    include lib/JvmFeatures.gmk

    include lib/JvmFlags.gmk

    # We cannot compile until the JVMTI gensrc has finished

    JVMTI_H := $(JVM_VARIANT_OUTPUTDIR)/gensrc/jvmtifiles/jvmti.h

    $(eval $(call SetupNativeCompilation, BUILD_DTRACE_GEN_OFFSETS, \

        NAME := dtraceGenOffsets, \

        TYPE := EXECUTABLE, \

        SRC := $(TOPDIR)/make/hotspot/src/native/dtrace, \

        TOOLCHAIN := $(TOOLCHAIN_BUILD), \

        LDFLAGS := -m64, \

        CFLAGS := -m64 $(JVM_CFLAGS), \

        EXTRA_DEPS := $(JVMTI_H), \

        OBJECT_DIR := $(JVM_VARIANT_OUTPUTDIR)/tools/dtrace-gen-offsets/objs, \

        OUTPUT_DIR := $(JVM_VARIANT_OUTPUTDIR)/tools/dtrace-gen-offsets, \

    ))

    DTRACE_GEN_OFFSETS_TOOL := $(BUILD_DTRACE_GEN_OFFSETS_TARGET)

    # Argument 1: Output filename

    # Argument 2: dtrace-gen-offset tool command line option

    define SetupDtraceOffsetsGeneration

      $1: $$(BUILD_DTRACE_GEN_OFFSETS)

	$$(call LogInfo, Generating dtrace $2 file $$(@F))

	$$(call MakeDir, $$(@D))

	$$(call ExecuteWithLog, $$@, ( $$(DTRACE_GEN_OFFSETS_TOOL) -$$(strip $2) > $$@ ) )

      TARGETS += $1

    endef

    JVM_OFFSETS_H := $(DTRACE_GENSRC_DIR)/JvmOffsets.h

    JVM_OFFSETS_CPP := $(DTRACE_GENSRC_DIR)/JvmOffsets.cpp

    JVM_OFFSETS_INDEX_H := $(DTRACE_GENSRC_DIR)/JvmOffsetsIndex.h

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

    # Run the dtrace-gen-offset tool to generate these three files.

    # The generated JvmOffsets.cpp is compiled with the rest of libjvm.

    # The header files are used by libjvm_db and jhelper.d, respectively.

    $(eval $(call SetupDtraceOffsetsGeneration, $(JVM_OFFSETS_H), header))

    $(eval $(call SetupDtraceOffsetsGeneration, $(JVM_OFFSETS_INDEX_H), index))

    $(eval $(call SetupDtraceOffsetsGeneration, $(JVM_OFFSETS_CPP), table))

  endif

endif