bench: add a Makefile to generate csmith tests

benching/csmith/Makefile

@@ -0,0 +1,47 @@
+CSMITH=/home/tobast/root/bin/csmith
+CC=gcc
+CCFLAGS=-O3 -w  # Remove warnings: these are not meaningful
+CCLIBS=-L../benchlib -I../benchlib -I/usr/include/csmith-2.3.0/
+CC_UNWIND=-lbench.unwind
+CC_EH_ELF=-lbench.eh_elf -L../../stack_walker -lstack_walker.global
+REMOTE=seneve
+SH=bash
+
+.SECONDARY:
+.PHONY: tests/%.allbin
+tests/%.allbin: tests/%.eh_elf.bin tests/%.unwind.bin ;
+
+tests/%.raw.c:
+	while \
+		( ssh seneve $(CSMITH) --max-funcs 100 > $@ ) ;\
+		! ./validate_csmith.py "$@" ; \
+		do :; done
+
+tests/%.c: tests/%.raw.c
+	cat $< \
+		| sed 's/#include "csmith.h"/#include <bench.h>\n#include <csmith.h>/g' \
+		| sed 's/return /bench_unwinding(); return /g' \
+		| head -n $$(expr 1 + $$(grep -n "func_1();$$" $< | cut -f1 -d':')) \
+		> $@
+	echo -e "\tbench_dump_data();\n\treturn 0;\n}\n" \
+		>> $@
+	rm -f $<
+
+tests/%.unwind.bin: tests/%.c
+	LD_RUN_PATH=$$(readlink -f "../benchlib") \
+		$(CC) $(CCFLAGS) $(CCLIBS) \
+		$(CC_UNWIND) \
+		$^ -o $@
+
+tests/%.eh_elf.bin: tests/%.c
+	LD_RUN_PATH=$$(readlink -f "../benchlib"):$$(readlink -f "../../stack_walker"):eh_elfs \
+		$(CC) $(CCFLAGS) $(CCLIBS) \
+		$(CC_UNWIND) \
+		$^ -o $@
+	mkdir -p tests/eh_elfs
+	../../generate_eh_elf.py --remote seneve --deps -o tests/eh_elfs \
+		-O3 --global-switch $@
+
+
+clean:
+	rm -f tests/*c tests/*bin tests/eh_elfs/*.eh_elf.bin.eh_elf.so