1 # Rules to generate assembly. 2 # Input variables: 3 # libvpx_2nd_arch 4 # libvpx_source_dir 5 # libvpx_config_dir_<arch> 6 # libvpx_codec_srcs_asm_<arch> 7 # 8 # Output variables: 9 # LOCAL_GENERATED_SOURCES_<arch> 10 # LOCAL_C_INCLUDES_<arch> 11 # 12 13 # ARM and x86 use an 'offsets' file in the assembly. It is generated by 14 # tricking the compiler and generating non-functional output which is then 15 # processed with grep. For ARM, this must be additionally converted from 16 # RVCT (ARM's in-house compiler) format to GNU Assembler Format for gcc. 17 18 # Offset files are currently used in vpx_scale for NEON and some encoder 19 # functions used in both ARM and x86. These files can not be compiled and need 20 # to be named accordingly to avoid auto-build rules. The encoder files are not 21 # used yet but are included in the comments for future reference. 22 23 libvpx_asm_offsets_intermediates := \ 24 vp8/encoder/vp8_asm_enc_offsets.intermediate \ 25 vpx_scale/vpx_scale_asm_offsets.intermediate \ 26 27 libvpx_asm_offsets_files := \ 28 vp8/encoder/vp8_asm_enc_offsets.asm \ 29 vpx_scale/vpx_scale_asm_offsets.asm \ 30 31 libvpx_intermediates := $(call local-intermediates-dir,,$(libvpx_2nd_arch)) 32 # Build the S files with inline assembly. 33 COMPILE_TO_S := $(addprefix $(libvpx_intermediates)/, $(libvpx_asm_offsets_intermediates)) 34 $(COMPILE_TO_S) : PRIVATE_2ND_ARCH := $(libvpx_2nd_arch) 35 $(COMPILE_TO_S) : PRIVATE_INTERMEDIATES := $(libvpx_intermediates) 36 $(COMPILE_TO_S) : PRIVATE_SOURCE_DIR := $(libvpx_source_dir) 37 $(COMPILE_TO_S) : PRIVATE_CONFIG_DIR := $(libvpx_config_dir_$(TARGET_$(libvpx_2nd_arch)ARCH)) 38 $(COMPILE_TO_S) : PRIVATE_CUSTOM_TOOL = $($(PRIVATE_2ND_ARCH)TARGET_CC) -S $(addprefix -I, $($(PRIVATE_2ND_ARCH)TARGET_C_INCLUDES)) -I $(PRIVATE_INTERMEDIATES) -I $(PRIVATE_SOURCE_DIR) -I $(PRIVATE_CONFIG_DIR) -DINLINE_ASM -o $@ $< 39 $(COMPILE_TO_S) : $(libvpx_intermediates)/%.intermediate : $(libvpx_source_dir)/%.c 40 $(transform-generated-source) 41 42 # Extract the offsets from the inline assembly. 43 OFFSETS_GEN := $(addprefix $(libvpx_intermediates)/, $(libvpx_asm_offsets_files)) 44 $(OFFSETS_GEN) : PRIVATE_OFFSET_PATTERN := '^[a-zA-Z0-9_]* EQU' 45 $(OFFSETS_GEN) : PRIVATE_SOURCE_DIR := $(libvpx_source_dir) 46 $(OFFSETS_GEN) : PRIVATE_CUSTOM_TOOL = grep $(PRIVATE_OFFSET_PATTERN) $< | tr -d '$$\#' | perl $(PRIVATE_SOURCE_DIR)/build/make/ads2gas.pl > $@ 47 $(OFFSETS_GEN) : %.asm : %.intermediate 48 $(transform-generated-source) 49 50 LOCAL_GENERATED_SOURCES_$(TARGET_$(libvpx_2nd_arch)ARCH) += $(OFFSETS_GEN) 51 52 ifneq ($(strip $(libvpx_codec_srcs_asm_$(TARGET_$(libvpx_2nd_arch)ARCH))),) 53 # This step is only required for ARM. MIPS uses intrinsics and x86 requires an 54 # assembler to pre-process its assembly files. 55 # The ARM assembly sources must be converted from ADS to GAS compatible format. 56 VPX_GEN := $(addprefix $(libvpx_intermediates)/, $(libvpx_codec_srcs_asm_$(TARGET_$(libvpx_2nd_arch)ARCH))) 57 $(VPX_GEN) : PRIVATE_SOURCE_DIR := $(libvpx_source_dir) 58 $(VPX_GEN) : PRIVATE_CUSTOM_TOOL = cat $< | perl $(PRIVATE_SOURCE_DIR)/build/make/ads2gas.pl > $@ 59 $(VPX_GEN) : $(libvpx_intermediates)/%.s : $(libvpx_source_dir)/% 60 $(transform-generated-source) 61 62 LOCAL_GENERATED_SOURCES_$(TARGET_$(libvpx_2nd_arch)ARCH) += $(VPX_GEN) 63 endif 64 65 LOCAL_C_INCLUDES_$(TARGET_$(libvpx_2nd_arch)ARCH) += \ 66 $(libvpx_intermediates)/vp8/common \ 67 $(libvpx_intermediates)/vp8/decoder \ 68 $(libvpx_intermediates)/vp8/encoder \ 69 $(libvpx_intermediates)/vpx_scale 70
