#
# Copyright (c) 2020, 2024, 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
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# 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).
#
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# 2 along with this work; if not, write to the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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default: all

include $(SPEC)
include MakeBase.gmk
include JdkNativeCompilation.gmk

################################################################################
# This makefile compiles and installs the hsdis library
#
################################################################################

HSDIS_OUTPUT_DIR := $(SUPPORT_OUTPUTDIR)/hsdis
REAL_HSDIS_NAME := hsdis-$(OPENJDK_TARGET_CPU_LEGACY_LIB)$(SHARED_LIBRARY_SUFFIX)
BUILT_HSDIS_LIB := $(HSDIS_OUTPUT_DIR)/$(REAL_HSDIS_NAME)

HSDIS_LINK_TYPE := C

ifeq ($(HSDIS_BACKEND), capstone)
  ifeq ($(call isTargetCpuArch, x86), true)
    CAPSTONE_ARCH := CS_ARCH_X86
    CAPSTONE_MODE := CS_MODE_$(OPENJDK_TARGET_CPU_BITS)
  else ifeq ($(call isTargetCpuArch, aarch64), true)
    CAPSTONE_ARCH := CS_ARCH_$(CAPSTONE_ARCH_AARCH64_NAME)
    CAPSTONE_MODE := CS_MODE_ARM
  else
    $(error No support for Capstone on this platform)
  endif

  HSDIS_CFLAGS += -DCAPSTONE_ARCH=$(CAPSTONE_ARCH) \
      -DCAPSTONE_MODE=$(CAPSTONE_MODE)
endif

ifeq ($(HSDIS_BACKEND), llvm)
  # Use C++ instead of C
  HSDIS_LINK_TYPE := C++

  ifeq ($(call isTargetOs, linux), true)
    LLVM_OS := pc-linux-gnu
  else ifeq ($(call isTargetOs, macosx), true)
    LLVM_OS := apple-darwin
  else ifeq ($(call isTargetOs, windows), true)
    LLVM_OS := pc-windows-msvc
  else
    $(error No support for LLVM on this platform)
  endif

  HSDIS_CFLAGS += -DLLVM_DEFAULT_TRIPLET='"$(OPENJDK_TARGET_CPU)-$(LLVM_OS)"'
endif

ifeq ($(HSDIS_BACKEND), binutils)
  ifeq ($(call isTargetOs, windows), true)
    # On windows, we need to "fake" a completely different toolchain using gcc
    # instead of the normal microsoft toolchain. This is quite hacky...

    MINGW_BASE := x86_64-w64-mingw32

    MINGW_SYSROOT = $(shell $(MINGW_BASE)-gcc -print-sysroot)
    ifeq ($(wildcard $(MINGW_SYSROOT)), )
      # Use fallback path
      MINGW_SYSROOT := /usr/$(MINGW_BASE)
      ifeq ($(wildcard $(MINGW_SYSROOT)), )
        $(error mingw sysroot not found)
      endif
    endif

    BUILD_HSDIS_CC := $(MINGW_BASE)-gcc
    BUILD_HSDIS_LD := $(MINGW_BASE)-ld
    BUILD_HSDIS_OBJCOPY := $(MINGW_BASE)-objcopy
    BUILD_HSDIS_SYSROOT_CFLAGS := --sysroot=$(MINGW_SYSROOT)
    BUILD_HSDIS_SYSROOT_LDFLAGS := --sysroot=$(MINGW_SYSROOT)

    MINGW_SYSROOT_LIB_PATH := $(MINGW_SYSROOT)/mingw/lib
    ifeq ($(wildcard $(MINGW_SYSROOT_LIB_PATH)), )
      # Try without mingw
      MINGW_SYSROOT_LIB_PATH := $(MINGW_SYSROOT)/lib
      ifeq ($(wildcard $(MINGW_SYSROOT_LIB_PATH)), )
        $(error mingw sysroot lib path not found)
      endif
    endif

    MINGW_VERSION = $(shell $(MINGW_BASE)-gcc -v 2>&1 | $(GREP) "gcc version" | $(CUT) -d " " -f 3)
    MINGW_GCC_LIB_PATH := /usr/lib/gcc/$(MINGW_BASE)/$(MINGW_VERSION)
    ifeq ($(wildcard $(MINGW_GCC_LIB_PATH)), )
      # Try using only major version number
      MINGW_VERSION_MAJOR := $(firstword $(subst ., , $(MINGW_VERSION)))
      MINGW_GCC_LIB_PATH := /usr/lib/gcc/$(MINGW_BASE)/$(MINGW_VERSION_MAJOR)
      ifeq ($(wildcard $(MINGW_GCC_LIB_PATH)), )
        $(error mingw gcc lib path not found)
      endif
    endif

    TOOLCHAIN_TYPE := gcc
    OPENJDK_TARGET_OS := linux
    OPENJDK_TARGET_OS_TYPE := unix
    CC_OUT_OPTION := -o$(SPACE)
    GENDEPS_FLAGS := -MMD -MF
    CFLAGS_DEBUG_SYMBOLS := -g
    DISABLED_WARNINGS :=
    DISABLE_WARNING_PREFIX := -Wno-
    CFLAGS_WARNINGS_ARE_ERRORS := -Werror
    SHARED_LIBRARY_FLAGS := -shared

    HSDIS_TOOLCHAIN_DEFAULT_CFLAGS := false
    HSDIS_TOOLCHAIN_DEFAULT_LDFLAGS := false
    HSDIS_LDFLAGS += -L$(MINGW_GCC_LIB_PATH) -L$(MINGW_SYSROOT_LIB_PATH)
    MINGW_DLLCRT := $(MINGW_SYSROOT_LIB_PATH)/dllcrt2.o
    HSDIS_TOOLCHAIN_LIBS := $(MINGW_DLLCRT) -lmingw32 -lgcc -lgcc_eh -lmoldname \
        -lmingwex -lmsvcrt -lpthread -ladvapi32 -lshell32 -luser32 -lkernel32
  else
    HSDIS_TOOLCHAIN_LIBS := -ldl
  endif
endif

################################################################################
## Build libhsdis
################################################################################

$(eval $(call SetupJdkLibrary, BUILD_HSDIS, \
    NAME := hsdis, \
    LINK_TYPE := $(HSDIS_LINK_TYPE), \
    SRC := $(TOPDIR)/src/utils/hsdis/$(HSDIS_BACKEND), \
    EXTRA_HEADER_DIRS := $(TOPDIR)/src/utils/hsdis, \
    OUTPUT_DIR := $(HSDIS_OUTPUT_DIR), \
    OBJECT_DIR := $(HSDIS_OUTPUT_DIR), \
    DISABLED_WARNINGS_gcc := undef format-nonliteral sign-compare, \
    DISABLED_WARNINGS_clang := undef format-nonliteral, \
    DEFAULT_CFLAGS := $(HSDIS_TOOLCHAIN_DEFAULT_CFLAGS), \
    CFLAGS := $(HSDIS_CFLAGS), \
    CXXFLAGS := $(HSDIS_CFLAGS), \
    LD_SET_ORIGIN := false, \
    DEFAULT_LDFLAGS := $(HSDIS_TOOLCHAIN_DEFAULT_LDFLAGS), \
    LDFLAGS := $(HSDIS_LDFLAGS) $(SHARED_LIBRARY_FLAGS), \
    LIBS := $(HSDIS_LIBS) $(HSDIS_TOOLCHAIN_LIBS), \
))

$(BUILT_HSDIS_LIB): $(BUILD_HSDIS_TARGET)
	$(install-file)

build: $(BUILD_HSDIS) $(BUILT_HSDIS_LIB)

TARGETS += build

ifeq ($(ENABLE_HSDIS_BUNDLING), false)

  ifeq ($(call isTargetOs, windows), true)
    JDK_HSDIS_DIR := $(JDK_OUTPUTDIR)/bin
    IMAGE_HSDIS_DIR := $(JDK_IMAGE_DIR)/bin
  else
    JDK_HSDIS_DIR := $(JDK_OUTPUTDIR)/lib
    IMAGE_HSDIS_DIR := $(JDK_IMAGE_DIR)/lib
  endif


  INSTALLED_HSDIS_JDK := $(JDK_HSDIS_DIR)/$(REAL_HSDIS_NAME)
  INSTALLED_HSDIS_IMAGE := $(IMAGE_HSDIS_DIR)/$(REAL_HSDIS_NAME)

  $(INSTALLED_HSDIS_JDK): $(BUILT_HSDIS_LIB)
          ifeq ($(HSDIS_BACKEND), binutils)
	    $(call LogWarn, NOTE: The resulting build might not be redistributable. Seek legal advice before distributing.)
          endif
	$(install-file)

  $(INSTALLED_HSDIS_IMAGE): $(BUILT_HSDIS_LIB)
	$(install-file)

  install: $(INSTALLED_HSDIS_JDK) $(INSTALLED_HSDIS_IMAGE)

else

  install:
	$(ECHO) NOTE: make install-hsdis is a no-op with --enable-hsdis-bundling

endif

TARGETS += install

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

all: $(TARGETS)

.PHONY: all default build install