begin working on relf component

Makefile

@@ -28,7 +28,7 @@ export MAKE
 export PYTHON
 
 # order matters here, build libraries first!
-TARGETS				=	rtdisasm rtdisasm_test dummy_target blackjack
+TARGETS				=	rtdisasm rtdisasm_test relf relf_test dummy_target blackjack
 
 .PHONY: $(TARGETS) debug clean
 

README.md

@@ -15,3 +15,7 @@ Hijacks runtime process in order to inject shared objects.
 ### rtdisasm
 
 KISS robust runtime "disassembler". Used to analyze instructions encoded sizes and find desired instructions for trampolines. No need to bloat it with full-blown disassembler logic like other projects do - one big lookup table is enough for such purposes.
+
+### relf
+
+Instrument to parse and analyze ELF shared objects. Primary goal is to find symbols and their offsets, so blackjack could link them in runtime.

src/relf/Makefile

@@ -0,0 +1,26 @@
+NAME				=	relf
+
+CFLAGS				=	-Wall -I$(INC_DIR)
+ASFLAGS				=
+LDFLAGS				=	-z noexecstack
+
+SRC		=	relf.c
+OBJ		:=	$(addprefix $(OBJ_DIR)/,$(patsubst %.s,%.o,$(patsubst %.c,%.o,$(SRC))))
+DEPS	=	relf.h
+
+$(OBJ_DIR)/%.o: %.c
+	@mkdir -p $(OBJ_DIR)
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+.PHONY: all clean debug
+
+all: $(OBJ) $(DEPS)
+	$(AR) -crs $(BIN_DIR)/lib$(NAME).a $(OBJ)
+
+debug: CFLAGS += -DDEBUG -g
+debug: LDFLAGS += -g
+debug: ASFLAGS += -g
+debug: all
+
+clean:
+	rm -f $(OBJ_DIR)/*

src/relf/relf.c

@@ -0,0 +1 @@
+#include "relf/relf.h"

src/relf/relf.h

@@ -0,0 +1,4 @@
+#ifndef __RELF_H
+#define __RELF_H
+
+#endif

src/relf_test/Makefile

@@ -0,0 +1,31 @@
+NAME				=	relf_test
+
+CFLAGS				=	-Wall -I$(INC_DIR)
+ASFLAGS				=
+LDFLAGS				=	-z noexecstack
+
+SRC		=	relf_test.c relf_dummy.c
+OBJ		:=	$(addprefix $(OBJ_DIR)/,$(patsubst %.s,%.o,$(patsubst %.c,%.o,$(SRC))))
+DEPS	=
+
+$(OBJ_DIR)/%.o: %.c
+	@mkdir -p $(OBJ_DIR)
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+$(OBJ_DIR)/%.o: %.s
+	@mkdir -p $(OBJ_DIR)
+	$(AS) $(ASFLAGS) -o $@ $<
+
+.PHONY: all clean debug
+
+all: $(OBJ) $(DEPS)
+	$(CC) $(LDFLAGS) -shared -o $(BIN_DIR)/relf_dummy.so obj/relf_dummy.o
+	$(CC) $(LDFLAGS) -o $(BIN_DIR)/relf_test obj/relf_test.o $(LIB_DIR)/librelf.a
+
+debug: CFLAGS += -DDEBUG -g
+debug: LDFLAGS += -g
+debug: ASFLAGS += -g
+debug: all
+
+clean:
+	rm -f $(OBJ_DIR)/*

src/relf_test/relf_dummy.c

@@ -0,0 +1,9 @@
+#include <stdio.h>
+
+volatile int dummy_symbol1;
+volatile int dummy_symbol2;
+
+void dummy_function1()
+{
+    printf("hello from dummy_function1\n");
+}

src/relf_test/relf_test.c

@@ -0,0 +1,8 @@
+#include "relf/relf.h"
+#include <stdio.h>
+
+int main()
+{
+    printf("relf_test\n");
+    return 0;
+}

src/rtdisasm/Makefile

@@ -2,7 +2,7 @@ NAME				=	rtdisasm
 
 CFLAGS				=	-Wall -I$(INC_DIR)
 ASFLAGS				=
-LDFLAGS				=	-z noexecstack -lcap
+LDFLAGS				=	-z noexecstack
 
 SRC		=	rtdisasm.c
 OBJ		:=	$(addprefix $(OBJ_DIR)/,$(patsubst %.s,%.o,$(patsubst %.c,%.o,$(SRC))))