diff options
Diffstat (limited to 'libvpx-offsets.mk')
| -rw-r--r-- | libvpx-offsets.mk | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/libvpx-offsets.mk b/libvpx-offsets.mk new file mode 100644 index 0000000..3336b1f --- /dev/null +++ b/libvpx-offsets.mk @@ -0,0 +1,51 @@ +# ARM and x86 use an 'offsets' file in the assembly. It is generated by +# tricking the compiler and generating non-functional output which is then +# processed with grep. For ARM, this must be additionally converted from +# RVCT (ARM's in-house compiler) format to GNU Assembler Format for gcc. + +# Offset files are currently used in vpx_scale for NEON and some encoder +# functions used in both ARM and x86. These files can not be compiled and need +# to be named accordingly to avoid auto-build rules. The encoder files are not +# used yet but are included in the comments for future reference. + +libvpx_asm_offsets_intermediates := \ + vp8/encoder/vp8_asm_enc_offsets.intermediate \ + vpx_scale/vpx_scale_asm_offsets.intermediate \ + +libvpx_asm_offsets_files := \ + vp8/encoder/vp8_asm_enc_offsets.asm \ + vpx_scale/vpx_scale_asm_offsets.asm \ + +libvpx_intermediates := $(call local-intermediates-dir,,$(libvpx_2nd_arch)) +# Build the S files with inline assembly. +COMPILE_TO_S := $(addprefix $(libvpx_intermediates)/, $(libvpx_asm_offsets_intermediates)) +$(COMPILE_TO_S) : PRIVATE_2ND_ARCH := $(libvpx_2nd_arch) +$(COMPILE_TO_S) : PRIVATE_INTERMEDIATES := $(libvpx_intermediates) +$(COMPILE_TO_S) : PRIVATE_SOURCE_DIR := $(libvpx_source_dir) +$(COMPILE_TO_S) : PRIVATE_CONFIG_DIR := $(libvpx_config_dir) +$(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 $@ $< +$(COMPILE_TO_S) : $(libvpx_intermediates)/%.intermediate : $(libvpx_source_dir)/%.c + $(transform-generated-source) + +# Extract the offsets from the inline assembly. +OFFSETS_GEN := $(addprefix $(libvpx_intermediates)/, $(libvpx_asm_offsets_files)) +$(OFFSETS_GEN) : PRIVATE_OFFSET_PATTERN := '^[a-zA-Z0-9_]* EQU' +$(OFFSETS_GEN) : PRIVATE_SOURCE_DIR := $(libvpx_source_dir) +$(OFFSETS_GEN) : PRIVATE_CUSTOM_TOOL = grep $(PRIVATE_OFFSET_PATTERN) $< | tr -d '$$\#' | perl $(PRIVATE_SOURCE_DIR)/build/make/ads2gas.pl > $@ +$(OFFSETS_GEN) : %.asm : %.intermediate + $(transform-generated-source) + +LOCAL_GENERATED_SOURCES_$(TARGET_$(libvpx_2nd_arch)ARCH) += $(OFFSETS_GEN) + +# This step is only required for ARM. MIPS uses intrinsics and x86 requires an +# assembler to pre-process its assembly files. +libvpx_asm_srcs := $(filter %.asm.s, $(libvpx_codec_srcs_unique)) + +# The ARM assembly sources must be converted from ADS to GAS compatible format. +VPX_GEN := $(addprefix $(libvpx_intermediates)/, $(libvpx_asm_srcs)) +$(VPX_GEN) : PRIVATE_SOURCE_DIR := $(libvpx_source_dir) +$(VPX_GEN) : PRIVATE_CUSTOM_TOOL = cat $< | perl $(PRIVATE_SOURCE_DIR)/build/make/ads2gas.pl > $@ +$(VPX_GEN) : $(libvpx_intermediates)/%.s : $(libvpx_source_dir)/% + $(transform-generated-source) + +LOCAL_GENERATED_SOURCES_$(TARGET_$(libvpx_2nd_arch)ARCH) += $(VPX_GEN) |