From 2694aa91c4849c393dd6d17bba260a86f696fc47 Mon Sep 17 00:00:00 2001
From: Szabolcs Nagy <nsz@port70.net>
Date: Wed, 8 Jan 2014 05:07:37 +0100
Subject: [PATCH] add size optimization options

---
 Makefile | 3 ++-
 stress.c | 2 +-
 wrap.c   | 7 +++++--
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index c0d1a68..a78a1ff 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,5 @@
 CFLAGS=-std=c99 -Os -g
+#CFLAGS+=-fomit-frame-pointer -fno-unwind-tables -fno-asynchronous-unwind-tables
 LDFLAGS=-g
 CC=musl-gcc
 all: wrap.so hello stress
@@ -8,7 +9,7 @@ wrap.o: head.h func.h
 wrap.so: wrap.o
 	$(CC) $(LDFLAGS) -shared -o $@ $< -ldl -lm -lrt -lcrypt
 clean:
-	rm -f wrap.so hello *.o
+	rm -f wrap.so hello stress *.o
 test: all
 	LD_PRELOAD=./wrap.so ./hello
 	LD_PRELOAD=./wrap.so ./stress 2>&1 |wc -l
diff --git a/stress.c b/stress.c
index 435d009..7170ed9 100644
--- a/stress.c
+++ b/stress.c
@@ -5,7 +5,7 @@ int main()
 	int i, j;
 	char * volatile p = "";
 	char * volatile q = "";
-	for (i=0; i<10000; i++)
+	for (i=0; i<100000; i++)
 		j += strcmp(p,q);
 	return j;
 }
diff --git a/wrap.c b/wrap.c
index a4144db..a24b4a2 100644
--- a/wrap.c
+++ b/wrap.c
@@ -5,10 +5,13 @@
 
 // dprintf and dlsym are not wrapped
 
+//static void print(const char *s) { dprintf(2, "%s\n", s); }
+#define print(s) dprintf(2, s"\n")
+
 #define F(ret,name,args,args2) ret (name)args \
 { \
 	static ret (*p__)args; \
-	dprintf(2, #name "\n"); \
+	print(#name); \
 	if (!p__) p__ = dlsym(RTLD_NEXT, #name); \
 	return p__ args2; \
 }
@@ -16,7 +19,7 @@
 #define V(v,name,args,args2) v (name)args \
 { \
 	static v (*p__)args; \
-	dprintf(2, #name "\n"); \
+	print(#name); \
 	if (!p__) p__ = dlsym(RTLD_NEXT, #name); \
 	p__ args2; \
 }
-- 
2.20.1