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118 lines
4.2 KiB
Makefile
118 lines
4.2 KiB
Makefile
## SPDX-License-Identifier: MIT OR Apache-2.0
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##
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## Copyright (c) 2018-2023 Andre Richter <andre.o.richter@gmail.com>
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include ../common/format.mk
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include ../common/docker.mk
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##--------------------------------------------------------------------------------------------------
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## Check for input variables that need be exported by the calling Makefile
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##--------------------------------------------------------------------------------------------------
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ifndef KERNEL_SYMBOLS_TOOL_PATH
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$(error KERNEL_SYMBOLS_TOOL_PATH is not set)
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endif
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ifndef TARGET
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$(error TARGET is not set)
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endif
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ifndef KERNEL_SYMBOLS_INPUT_ELF
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$(error KERNEL_SYMBOLS_INPUT_ELF is not set)
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endif
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ifndef KERNEL_SYMBOLS_OUTPUT_ELF
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$(error KERNEL_SYMBOLS_OUTPUT_ELF is not set)
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endif
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##--------------------------------------------------------------------------------------------------
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## Targets and Prerequisites
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##--------------------------------------------------------------------------------------------------
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KERNEL_SYMBOLS_MANIFEST = kernel_symbols/Cargo.toml
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KERNEL_SYMBOLS_LINKER_SCRIPT = kernel_symbols/kernel_symbols.ld
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KERNEL_SYMBOLS_RS = $(KERNEL_SYMBOLS_INPUT_ELF)_symbols.rs
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KERNEL_SYMBOLS_DEMANGLED_RS = $(shell pwd)/$(KERNEL_SYMBOLS_INPUT_ELF)_symbols_demangled.rs
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KERNEL_SYMBOLS_ELF = target/$(TARGET)/release/kernel_symbols
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KERNEL_SYMBOLS_STRIPPED = target/$(TARGET)/release/kernel_symbols_stripped
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# Export for build.rs of kernel_symbols crate.
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export KERNEL_SYMBOLS_DEMANGLED_RS
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##--------------------------------------------------------------------------------------------------
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## Command building blocks
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##--------------------------------------------------------------------------------------------------
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GET_SYMBOLS_SECTION_VIRT_ADDR = $(DOCKER_TOOLS) $(EXEC_SYMBOLS_TOOL) \
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--get_symbols_section_virt_addr $(KERNEL_SYMBOLS_OUTPUT_ELF)
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RUSTFLAGS = -C link-arg=--script=$(KERNEL_SYMBOLS_LINKER_SCRIPT) \
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-C link-arg=--section-start=.rodata=$$($(GET_SYMBOLS_SECTION_VIRT_ADDR))
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RUSTFLAGS_PEDANTIC = $(RUSTFLAGS) \
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-D warnings \
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-D missing_docs
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COMPILER_ARGS = --target=$(TARGET) \
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--release
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RUSTC_CMD = cargo rustc $(COMPILER_ARGS) --manifest-path $(KERNEL_SYMBOLS_MANIFEST)
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OBJCOPY_CMD = rust-objcopy \
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--strip-all \
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-O binary
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EXEC_SYMBOLS_TOOL = ruby $(KERNEL_SYMBOLS_TOOL_PATH)/main.rb
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##------------------------------------------------------------------------------
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## Dockerization
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##------------------------------------------------------------------------------
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DOCKER_CMD = docker run -t --rm -v $(shell pwd):/work/tutorial -w /work/tutorial
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# DOCKER_IMAGE defined in include file (see top of this file).
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DOCKER_TOOLS = $(DOCKER_CMD) $(DOCKER_IMAGE)
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##--------------------------------------------------------------------------------------------------
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## Targets
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##--------------------------------------------------------------------------------------------------
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.PHONY: all symbols measure_time_start measure_time_finish
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all: measure_time_start symbols measure_time_finish
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symbols:
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@cp $(KERNEL_SYMBOLS_INPUT_ELF) $(KERNEL_SYMBOLS_OUTPUT_ELF)
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@$(DOCKER_TOOLS) $(EXEC_SYMBOLS_TOOL) --gen_symbols $(KERNEL_SYMBOLS_OUTPUT_ELF) \
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$(KERNEL_SYMBOLS_RS)
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$(call color_progress_prefix, "Demangling")
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@echo Symbol names
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@cat $(KERNEL_SYMBOLS_RS) | rustfilt > $(KERNEL_SYMBOLS_DEMANGLED_RS)
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@RUSTFLAGS="$(RUSTFLAGS_PEDANTIC)" $(RUSTC_CMD)
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$(call color_progress_prefix, "Stripping")
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@echo Symbols ELF file
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@$(OBJCOPY_CMD) $(KERNEL_SYMBOLS_ELF) $(KERNEL_SYMBOLS_STRIPPED)
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@$(DOCKER_TOOLS) $(EXEC_SYMBOLS_TOOL) --patch_data $(KERNEL_SYMBOLS_OUTPUT_ELF) \
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$(KERNEL_SYMBOLS_STRIPPED)
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# Note: The following is the only _trivial_ way I could think of that works out of the box on both
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# Linux and macOS. Since macOS does not have the %N nanosecond format string option, the
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# resolution is restricted to whole seconds.
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measure_time_start:
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@date +%s > /tmp/kernel_symbols_start.date
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measure_time_finish:
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@date +%s > /tmp/kernel_symbols_end.date
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$(call color_progress_prefix, "Finished")
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@echo "in $$((`cat /tmp/kernel_symbols_end.date` - `cat /tmp/kernel_symbols_start.date`)).0s"
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@rm /tmp/kernel_symbols_end.date /tmp/kernel_symbols_start.date
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