Merge pull request #1228 from WorksButNotTested/frida

Frida

12 files changed, 288 insertions, 30 deletions

diff --git a/frida_mode/GNUmakefile b/frida_mode/GNUmakefile
index a8e6ce90..254c82db 100644
--- a/frida_mode/GNUmakefile
+++ b/frida_mode/GNUmakefile
@@ -141,9 +141,11 @@ AFLPP_FRIDA_DRIVER_HOOK_OBJ=$(BUILD_DIR)frida_hook.so
 AFLPP_QEMU_DRIVER_HOOK_SRC:=$(HOOK_DIR)qemu_hook.c
 AFLPP_QEMU_DRIVER_HOOK_OBJ:=$(BUILD_DIR)qemu_hook.so
 
+ifneq "$(shell uname)" "Darwin"
 ADDR_DIR:=$(PWD)addr/
 ADDR_SRC:=$(ADDR_DIR)addr.c
 ADDR_BIN:=$(BUILD_DIR)addr
+endif
 
 BIN2C:=$(BUILD_DIR)bin2c
 BIN2C_SRC:=$(PWD)util/bin2c.c
diff --git a/frida_mode/addr/addr.c b/frida_mode/addr/addr.c
index 40ddc5ba..371f69d4 100644
--- a/frida_mode/addr/addr.c
+++ b/frida_mode/addr/addr.c
@@ -32,7 +32,7 @@ int main (int argc, char** argv, char** envp) {
 
     dl_iterate_phdr(phdr_callback, &base);
 
-    printf("0x%016lx\n", base);
+    printf("%p\n", (void *)base);
     if (base == 0) { return 1; }
 
     return 0;
diff --git a/frida_mode/include/instrument.h b/frida_mode/include/instrument.h
index 63f12181..abb89c9f 100644
--- a/frida_mode/include/instrument.h
+++ b/frida_mode/include/instrument.h
@@ -5,14 +5,13 @@
 
 #include "config.h"
 
-extern char *           instrument_debug_filename;
-extern char *           instrument_coverage_filename;
-extern gboolean         instrument_tracing;
-extern gboolean         instrument_optimize;
-extern gboolean         instrument_unique;
-extern __thread guint64 instrument_previous_pc;
-extern guint64          instrument_hash_zero;
-extern char *           instrument_coverage_unstable_filename;
+extern char *   instrument_debug_filename;
+extern char *   instrument_coverage_filename;
+extern gboolean instrument_tracing;
+extern gboolean instrument_optimize;
+extern gboolean instrument_unique;
+extern guint64  instrument_hash_zero;
+extern char *   instrument_coverage_unstable_filename;
 
 extern gboolean instrument_use_fixed_seed;
 extern guint64  instrument_fixed_seed;
@@ -20,6 +19,8 @@ extern guint64  instrument_fixed_seed;
 extern uint8_t *__afl_area_ptr;
 extern uint32_t __afl_map_size;
 
+extern __thread guint64 *instrument_previous_pc_addr;
+
 void instrument_config(void);
 
 void instrument_init(void);
diff --git a/frida_mode/src/instrument/instrument.c b/frida_mode/src/instrument/instrument.c
index bf102a82..46ed1a34 100644
--- a/frida_mode/src/instrument/instrument.c
+++ b/frida_mode/src/instrument/instrument.c
@@ -32,12 +32,13 @@ char *   instrument_coverage_unstable_filename = NULL;
 
 static GumStalkerTransformer *transformer = NULL;
 
-__attribute__((aligned(0x1000))) __thread guint64 instrument_previous_pc = 0;
-
 static GumAddress previous_rip = 0;
 static GumAddress previous_end = 0;
 static u8 *       edges_notified = NULL;
 
+__thread guint64  instrument_previous_pc;
+__thread guint64 *instrument_previous_pc_addr = NULL;
+
 typedef struct {
 
   GumAddress address;
@@ -105,8 +106,14 @@ __attribute__((hot)) static void on_basic_block(GumCpuContext *context,
   guint16      current_end = ctx->end;
   guint64      current_pc = instrument_get_offset_hash(current_rip);
   guint64      edge;
+  if (instrument_previous_pc_addr == NULL) {
+
+    instrument_previous_pc_addr = &instrument_previous_pc;
+    *instrument_previous_pc_addr = instrument_hash_zero;
+
+  }
 
-  edge = current_pc ^ instrument_previous_pc;
+  edge = current_pc ^ *instrument_previous_pc_addr;
 
   instrument_increment_map(edge);
 
@@ -136,7 +143,7 @@ __attribute__((hot)) static void on_basic_block(GumCpuContext *context,
   previous_end = current_end;
 
   gsize map_size_pow2 = util_log2(__afl_map_size);
-  instrument_previous_pc = util_rotate(current_pc, 1, map_size_pow2);
+  *instrument_previous_pc_addr = util_rotate(current_pc, 1, map_size_pow2);
 
 }
 
@@ -393,7 +400,11 @@ GumStalkerTransformer *instrument_get_transformer(void) {
 
 void instrument_on_fork() {
 
-  instrument_previous_pc = instrument_hash_zero;
+  if (instrument_previous_pc_addr != NULL) {
+
+    *instrument_previous_pc_addr = instrument_hash_zero;
+
+  }
 
 }
 
diff --git a/frida_mode/src/instrument/instrument_arm64.c b/frida_mode/src/instrument/instrument_arm64.c
index 27142f1f..360806f5 100644
--- a/frida_mode/src/instrument/instrument_arm64.c
+++ b/frida_mode/src/instrument/instrument_arm64.c
@@ -87,7 +87,7 @@ static const afl_log_code_asm_t template =
 
         .stp_x0_x1 = 0xa93607e0,
 
-        .adrp_x0_prev_loc1 = 0xb0000000,
+        .adrp_x0_prev_loc1 = 0x90000000,
         .ldr_x1_ptr_x0 = 0xf9400001,
 
         .mov_x0_curr_loc = 0xd2800000,
@@ -104,7 +104,7 @@ static const afl_log_code_asm_t template =
 
         .strb_w1_ptr_x0 = 0x39000001,
 
-        .adrp_x0_prev_loc2 = 0xb0000000,
+        .adrp_x0_prev_loc2 = 0x90000000,
         .mov_x1_curr_loc_shr_1 = 0xd2800001,
         .str_x1_ptr_x0 = 0xf9000001,
 
@@ -155,10 +155,23 @@ void instrument_coverage_optimize(const cs_insn *   instr,
   afl_log_code    code = {0};
   GumArm64Writer *cw = output->writer.arm64;
   guint64 area_offset = instrument_get_offset_hash(GUM_ADDRESS(instr->address));
-  gsize      map_size_pow2;
-  gsize      area_offset_ror;
+  gsize   map_size_pow2;
+  gsize   area_offset_ror;
   GumAddress code_addr = 0;
 
+  if (instrument_previous_pc_addr == NULL) {
+
+    GumAddressSpec spec = {.near_address = cw->code,
+                           .max_distance = 1ULL << 30};
+
+    instrument_previous_pc_addr = gum_memory_allocate_near(
+        &spec, sizeof(guint64), 0x1000, GUM_PAGE_READ | GUM_PAGE_WRITE);
+    *instrument_previous_pc_addr = instrument_hash_zero;
+    FVERBOSE("instrument_previous_pc_addr: %p", instrument_previous_pc_addr);
+    FVERBOSE("code_addr: %p", cw->code);
+
+  }
+
   // gum_arm64_writer_put_brk_imm(cw, 0x0);
 
   code_addr = cw->pc;
@@ -170,13 +183,13 @@ void instrument_coverage_optimize(const cs_insn *   instr,
    * 64KB in size, then it should also end on a 64 KB boundary. It is followed
    * by our previous_pc, so this too should be 64KB aligned.
    */
-  g_assert(PAGE_ALIGNED(&instrument_previous_pc));
+  g_assert(PAGE_ALIGNED(instrument_previous_pc_addr));
   g_assert(PAGE_ALIGNED(__afl_area_ptr));
 
   instrument_patch_ardp(
       &code.code.adrp_x0_prev_loc1,
       code_addr + offsetof(afl_log_code, code.adrp_x0_prev_loc1),
-      GUM_ADDRESS(&instrument_previous_pc));
+      GUM_ADDRESS(instrument_previous_pc_addr));
 
   code.code.mov_x0_curr_loc |= area_offset << 5;
 
@@ -191,7 +204,7 @@ void instrument_coverage_optimize(const cs_insn *   instr,
   instrument_patch_ardp(
       &code.code.adrp_x0_prev_loc2,
       code_addr + offsetof(afl_log_code, code.adrp_x0_prev_loc2),
-      GUM_ADDRESS(&instrument_previous_pc));
+      GUM_ADDRESS(instrument_previous_pc_addr));
 
   code.code.mov_x1_curr_loc_shr_1 |= (area_offset_ror << 5);
 
@@ -214,7 +227,6 @@ void instrument_coverage_optimize_init(void) {
   }
 
   FVERBOSE("__afl_area_ptr: %p", __afl_area_ptr);
-  FVERBOSE("instrument_previous_pc: %p", &instrument_previous_pc);
 
 }
 
diff --git a/frida_mode/src/instrument/instrument_x64.c b/frida_mode/src/instrument/instrument_x64.c
index b7b6ca6f..0ea4f7f0 100644
--- a/frida_mode/src/instrument/instrument_x64.c
+++ b/frida_mode/src/instrument/instrument_x64.c
@@ -360,7 +360,6 @@ void instrument_coverage_optimize_init(void) {
   }
 
   FVERBOSE("__afl_area_ptr: %p", __afl_area_ptr);
-  FVERBOSE("instrument_previous_pc: %p", &instrument_previous_pc);
 
 }
 
@@ -439,6 +438,18 @@ void instrument_coverage_optimize(const cs_insn *   instr,
   gsize   map_size_pow2;
   gsize   area_offset_ror;
   GumAddress code_addr = 0;
+  if (instrument_previous_pc_addr == NULL) {
+
+    GumAddressSpec spec = {.near_address = cw->code,
+                           .max_distance = 1ULL << 30};
+
+    instrument_previous_pc_addr = gum_memory_allocate_near(
+        &spec, sizeof(guint64), 0x1000, GUM_PAGE_READ | GUM_PAGE_WRITE);
+    *instrument_previous_pc_addr = instrument_hash_zero;
+    FVERBOSE("instrument_previous_pc_addr: %p", instrument_previous_pc_addr);
+    FVERBOSE("code_addr: %p", cw->code);
+
+  }
 
   instrument_coverage_suppress_init();
 
@@ -462,7 +473,7 @@ void instrument_coverage_optimize(const cs_insn *   instr,
   *((guint32 *)&code.bytes[curr_loc_shr_1_offset]) = (guint32)(area_offset_ror);
 
   gssize prev_loc_value =
-      GPOINTER_TO_SIZE(&instrument_previous_pc) -
+      GPOINTER_TO_SIZE(instrument_previous_pc_addr) -
       (code_addr + offsetof(afl_log_code, code.mov_prev_loc_curr_loc_shr1) +
        sizeof(code.code.mov_prev_loc_curr_loc_shr1));
   gssize prev_loc_value_offset =
@@ -478,7 +489,7 @@ void instrument_coverage_optimize(const cs_insn *   instr,
   *((gint *)&code.bytes[prev_loc_value_offset]) = (gint)prev_loc_value;
 
   gssize prev_loc_value2 =
-      GPOINTER_TO_SIZE(&instrument_previous_pc) -
+      GPOINTER_TO_SIZE(instrument_previous_pc_addr) -
       (code_addr + offsetof(afl_log_code, code.mov_eax_prev_loc) +
        sizeof(code.code.mov_eax_prev_loc));
   gssize prev_loc_value_offset2 =
diff --git a/frida_mode/src/instrument/instrument_x86.c b/frida_mode/src/instrument/instrument_x86.c
index ad837e2d..c4e93324 100644
--- a/frida_mode/src/instrument/instrument_x86.c
+++ b/frida_mode/src/instrument/instrument_x86.c
@@ -153,6 +153,19 @@ void instrument_coverage_optimize(const cs_insn *   instr,
   gsize   map_size_pow2;
   gsize   area_offset_ror;
 
+  if (instrument_previous_pc_addr == NULL) {
+
+    GumAddressSpec spec = {.near_address = cw->code,
+                           .max_distance = 1ULL << 30};
+
+    instrument_previous_pc_addr = gum_memory_allocate_near(
+        &spec, sizeof(guint64), 0x1000, GUM_PAGE_READ | GUM_PAGE_WRITE);
+    *instrument_previous_pc_addr = instrument_hash_zero;
+    FVERBOSE("instrument_previous_pc_addr: %p", instrument_previous_pc_addr);
+    FVERBOSE("code_addr: %p", cw->code);
+
+  }
+
   code.code = template;
 
   instrument_coverage_suppress_init();
@@ -170,7 +183,7 @@ void instrument_coverage_optimize(const cs_insn *   instr,
       sizeof(code.code.mov_eax_prev_loc) - sizeof(gint);
 
   *((gint *)&code.bytes[prev_loc_value_offset2]) =
-      (gint)GPOINTER_TO_SIZE(&instrument_previous_pc);
+      (gint)GPOINTER_TO_SIZE(instrument_previous_pc_addr);
 
   gssize curr_loc_shr_1_offset =
       offsetof(afl_log_code, code.mov_prev_loc_curr_loc_shr1) +
@@ -187,7 +200,7 @@ void instrument_coverage_optimize(const cs_insn *   instr,
       sizeof(guint32);
 
   *((gint *)&code.bytes[prev_loc_value_offset]) =
-      (gint)GPOINTER_TO_SIZE(&instrument_previous_pc);
+      (gint)GPOINTER_TO_SIZE(instrument_previous_pc_addr);
 
   gssize xor_curr_loc_offset = offsetof(afl_log_code, code.xor_eax_curr_loc) +
                                sizeof(code.code.xor_eax_curr_loc) -
diff --git a/frida_mode/src/persistent/persistent_arm64.c b/frida_mode/src/persistent/persistent_arm64.c
index 48f29bb0..16ecf39c 100644
--- a/frida_mode/src/persistent/persistent_arm64.c
+++ b/frida_mode/src/persistent/persistent_arm64.c
@@ -236,7 +236,13 @@ static void instrument_exit(GumArm64Writer *cw) {
 static int instrument_afl_persistent_loop_func(void) {
 
   int ret = __afl_persistent_loop(persistent_count);
-  instrument_previous_pc = instrument_hash_zero;
+  if (instrument_previous_pc_addr == NULL) {
+
+    FATAL("instrument_previous_pc_addr uninitialized");
+
+  }
+
+  *instrument_previous_pc_addr = instrument_hash_zero;
   return ret;
 
 }
diff --git a/frida_mode/src/persistent/persistent_x64.c b/frida_mode/src/persistent/persistent_x64.c
index 13d6a090..56141787 100644
--- a/frida_mode/src/persistent/persistent_x64.c
+++ b/frida_mode/src/persistent/persistent_x64.c
@@ -173,7 +173,13 @@ static void instrument_exit(GumX86Writer *cw) {
 static int instrument_afl_persistent_loop_func(void) {
 
   int ret = __afl_persistent_loop(persistent_count);
-  instrument_previous_pc = instrument_hash_zero;
+  if (instrument_previous_pc_addr == NULL) {
+
+    FATAL("instrument_previous_pc_addr uninitialized");
+
+  }
+
+  *instrument_previous_pc_addr = instrument_hash_zero;
   return ret;
 
 }
diff --git a/frida_mode/src/persistent/persistent_x86.c b/frida_mode/src/persistent/persistent_x86.c
index 3fe5891c..76c25334 100644
--- a/frida_mode/src/persistent/persistent_x86.c
+++ b/frida_mode/src/persistent/persistent_x86.c
@@ -130,7 +130,13 @@ static void instrument_exit(GumX86Writer *cw) {
 static int instrument_afl_persistent_loop_func(void) {
 
   int ret = __afl_persistent_loop(persistent_count);
-  instrument_previous_pc = instrument_hash_zero;
+  if (instrument_previous_pc_addr == NULL) {
+
+    FATAL("instrument_previous_pc_addr uninitialized");
+
+  }
+
+  *instrument_previous_pc_addr = instrument_hash_zero;
   return ret;
 
 }
diff --git a/frida_mode/test/libxslt/GNUmakefile b/frida_mode/test/libxslt/GNUmakefile
new file mode 100644
index 00000000..655e652b
--- /dev/null
+++ b/frida_mode/test/libxslt/GNUmakefile
@@ -0,0 +1,177 @@
+PWD:=$(shell pwd)/
+ROOT:=$(PWD)../../../
+BUILD_DIR:=$(PWD)build/
+
+AFLPP_FRIDA_DRIVER_HOOK_OBJ=$(ROOT)frida_mode/build/frida_hook.so
+AFLPP_QEMU_DRIVER_HOOK_OBJ=$(ROOT)frida_mode/build/qemu_hook.so
+
+LIBFUZZER_LIB:=/usr/lib/llvm-12/lib/libFuzzer.a
+
+LIBXSLT_GIT_REPO:=https://gitlab.gnome.org/GNOME/libxslt.git
+LIBXSLT_DIR:=$(BUILD_DIR)libxslt/
+LIBXSLT_LIB:=$(LIBXSLT_DIR)libxslt/.libs/libxslt.a
+
+LIBZXML2_GIT_REPO:=https://gitlab.gnome.org/GNOME/libxml2.git
+LIBXML2_DIR:=$(BUILD_DIR)libxml2/
+LIBXML2_LIB:=$(LIBXML2_DIR).libs/libxml2.a
+
+TEST_BIN:=$(BUILD_DIR)test
+XPATH_XML:=$(BUILD_DIR)xpath.xml
+
+ifeq "$(shell uname)" "Darwin"
+TEST_BIN_LDFLAGS:=-undefined dynamic_lookup -Wl,-no_pie
+endif
+
+TEST_DATA_DIR:=$(BUILD_DIR)in/
+TEST_DATA_SRC:=$(LIBXSLT_DIR)tests/testdata/fuzz_corpus/
+DUMMY_DATA_FILE:=$(BUILD_DIR)default_seed
+
+FRIDA_OUT:=$(BUILD_DIR)frida-out
+QEMU_OUT:=$(BUILD_DIR)qemu-out
+
+ifndef ARCH
+
+ARCH=$(shell uname -m)
+ifeq "$(ARCH)" "aarch64"
+ ARCH:=arm64
+endif
+
+ifeq "$(ARCH)" "i686"
+ ARCH:=x86
+endif
+endif
+
+ADDR_BIN:=$(ROOT)frida_mode/build/addr
+GET_SYMBOL_ADDR:=$(ROOT)frida_mode/util/get_symbol_addr.sh
+
+AFL_FRIDA_BASE_ADDR:=$(shell $(ADDR_BIN))
+AFL_FRIDA_PERSISTENT_ADDR=$(shell $(GET_SYMBOL_ADDR) $(TEST_BIN) LLVMFuzzerTestOneInput $(AFL_FRIDA_BASE_ADDR))
+
+ifeq "$(ARCH)" "arm64"
+ AFL_QEMU_PERSISTENT_ADDR=$(shell $(GET_SYMBOL_ADDR) $(TEST_BIN) LLVMFuzzerTestOneInput 0x5500000000)
+endif
+
+ifeq "$(ARCH)" "x86_64"
+ AFL_QEMU_PERSISTENT_ADDR=$(shell $(GET_SYMBOL_ADDR) $(TEST_BIN) LLVMFuzzerTestOneInput 0x4000000000)
+endif
+
+ifeq "$(ARCH)" "x86"
+ AFL_QEMU_PERSISTENT_ADDR=$(shell $(GET_SYMBOL_ADDR) $(TEST_BIN) LLVMFuzzerTestOneInput 0x4000000000)
+endif
+
+.PHONY: all clean frida hook
+
+all: $(TEST_BIN)
+	make -C $(ROOT)frida_mode/
+
+32:
+	CXXFLAGS="-m32" LDFLAGS="-m32" ARCH="x86" make all
+
+$(BUILD_DIR):
+	mkdir -p $@
+
+########## LIBXML2 #######
+
+$(LIBXML2_DIR): | $(BUILD_DIR)
+	git clone --depth 1 $(LIBZXML2_GIT_REPO) $@
+
+$(LIBXML2_LIB): | $(LIBXML2_DIR)
+	cd $(LIBXML2_DIR) && ./autogen.sh \
+		--disable-shared \
+		--without-c14n \
+		--without-legacy \
+		--without-push \
+		--without-python \
+		--without-reader \
+		--without-regexps \
+		--without-sax1 \
+		--without-schemas \
+		--without-schematron \
+		--without-valid \
+		--without-writer \
+		--without-zlib \
+		--without-lzma
+	cd $(LIBXML2_DIR) && make -j$(nproc) V=1
+
+libxml2: $(LIBXML2_LIB)
+
+########## LIBZXSLT #######
+
+$(LIBXSLT_DIR): | $(BUILD_DIR)
+	git clone --depth 1 $(LIBXSLT_GIT_REPO) $@
+
+$(LIBXSLT_LIB): | $(LIBXSLT_DIR) $(LIBXML2_DIR)
+	cd $(LIBXSLT_DIR) && ./autogen.sh \
+		--with-libxml-src=../libxml2 \
+		--disable-shared \
+		--without-python \
+		--with-crypto \
+		--without-debug \
+		--without-debugger \
+		--without-profiler
+	cd $(LIBXSLT_DIR) && make -j$(nproc) V=1
+
+libxslt: $(LIBXSLT_LIB)
+
+$(TEST_BIN): $(LIBXSLT_LIB) $(LIBXML2_LIB)
+	clang \
+		-o $@ \
+		-fsanitize=fuzzer \
+		-I $(LIBXSLT_DIR) \
+		-I $(LIBXML2_DIR)include \
+		$(LIBXSLT_DIR)tests/fuzz/xpath.c \
+		$(LIBXSLT_DIR)tests/fuzz/fuzz.c \
+		$(LIBXSLT_DIR)libxslt/.libs/libxslt.a \
+		$(LIBXSLT_DIR)libexslt/.libs/libexslt.a \
+		$(LIBXML2_LIB) \
+		-lgcrypt
+
+test: $(TEST_BIN)
+
+
+########## DUMMY #######
+
+$(DUMMY_DATA_FILE): | $(TEST_DATA_DIR)
+	dd if=/dev/zero bs=1048576 count=1 of=$@
+
+###### TEST DATA #######
+
+$(TEST_DATA_DIR): | $(LIBXSLT_DIR) $(BUILD_DIR)
+	cp -av $(LIBXSLT_DIR)tests/fuzz/seed/* $@
+
+$(XPATH_XML): | $(LIBXSLT_DIR)
+	cp $(LIBXSLT_DIR)tests/fuzz/xpath.xml $@
+
+
+clean:
+	rm -rf $(BUILD_DIR)
+
+frida: $(TEST_BIN) $(AFLPP_FRIDA_DRIVER_HOOK_OBJ) $(TEST_DATA_FILE) $(DUMMY_DATA_FILE) $(XPATH_XML)
+	AFL_FRIDA_PERSISTENT_CNT=1000000 \
+	AFL_FRIDA_PERSISTENT_HOOK=$(AFLPP_FRIDA_DRIVER_HOOK_OBJ) \
+	AFL_FRIDA_PERSISTENT_ADDR=$(AFL_FRIDA_PERSISTENT_ADDR) \
+	AFL_ENTRYPOINT=$(AFL_FRIDA_PERSISTENT_ADDR) \
+	$(ROOT)afl-fuzz \
+		-i $(TEST_DATA_DIR) \
+		-o $(FRIDA_OUT) \
+		-m none \
+		-d \
+		-O \
+		-V 30 \
+		-- \
+			$(TEST_BIN) $(DUMMY_DATA_FILE)
+
+qemu: $(TEST_BIN) $(AFLPP_QEMU_DRIVER_HOOK_OBJ) $(TEST_DATA_FILE) $(DUMMY_DATA_FILE) $(XPATH_XML)
+	AFL_QEMU_PERSISTENT_CNT=1000000 \
+	AFL_QEMU_PERSISTENT_HOOK=$(AFLPP_QEMU_DRIVER_HOOK_OBJ) \
+	AFL_QEMU_PERSISTENT_ADDR=$(AFL_QEMU_PERSISTENT_ADDR) \
+	AFL_ENTRYPOINT=$(AFL_QEMU_PERSISTENT_ADDR) \
+	$(ROOT)afl-fuzz \
+		-i $(TEST_DATA_DIR) \
+		-o $(QEMU_OUT) \
+		-m none \
+		-d \
+		-Q \
+		-V 30 \
+		-- \
+			$(TEST_BIN) $(DUMMY_DATA_FILE)
diff --git a/frida_mode/test/libxslt/Makefile b/frida_mode/test/libxslt/Makefile
new file mode 100644
index 00000000..07b139e9
--- /dev/null
+++ b/frida_mode/test/libxslt/Makefile
@@ -0,0 +1,13 @@
+all:
+	@echo trying to use GNU make...
+	@gmake all || echo please install GNUmake
+
+32:
+	@echo trying to use GNU make...
+	@gmake 32 || echo please install GNUmake
+
+clean:
+	@gmake clean
+
+frida:
+	@gmake frida