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.PHONY: all
all: benchmark
ARCH ?= riscv64
CROSS_COMPILE ?= $(ARCH)-unknown-elf-
LLVM ?= 0
COMPILER != [ "$(LLVM)" != "0" ] \
&& echo clang --target="$(CROSS_COMPILE)" \
|| echo $(CROSS_COMPILE)gcc
include common/arch/$(ARCH)/source.mk
OBFLAGS := -ffreestanding -nostdlib -std=c17 -g -O2
INCLUDEFLAGS := -I ../include -I.
WARNFLAGS := -Wall -Wextra
DEPFLAGS = -MT $@ -MMD -MP -MF $@.d
COMPILE_BENCHMARK = $(COMPILER) $(WARNFLAGS) $(INCLUDEFLAGS) \
$(DEPFLAGS) $(OBFLAGS) $(ARCH_FLAGS)
GEN_INITRD := cpio -H newc -o >
# icount gives a rough approximation of how many instructions are executed, but
# *actual* performance would still have to be measured on real systems
QEMU := qemu-system-$(ARCH) -machine virt -kernel ../kmi.bin \
-serial stdio \
-monitor none \
-nographic \
-no-reboot \
-m 128M \
-icount 0 \
-initrd
KMI := ../kmi.bin
COMMON := build/printf.o build/string.o
build/printf.o: common/printf.c $(KMI)
$(COMPILE_BENCHMARK) -c common/printf.c -o build/printf.o
build/string.o: common/string.c $(KMI)
$(COMPILE_BENCHMARK) -c common/string.c -o build/string.o
BENCHMARKS :=
include benchmarks.mk
.PHONY: benchmark
benchmark: $(BENCHMARKS)
@cd reports; for d in * ; do \
printf "%8s: " "$$d"; tail -n 1 $$d/log | tr -d '\r' | bc -l; \
done
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