Re: [RFC PATCH v2 1/3] selftests/x86: Fixed Makefile for SGX selftest

From: Xing, Cedric
Date: Sat Jul 13 2019 - 03:01:26 EST


On 7/11/2019 8:19 PM, Jarkko Sakkinen wrote:
On Tue, Apr 23, 2019 at 11:26:21PM -0700, Cedric Xing wrote:
The original x86/sgx/Makefile doesn't work when 'x86/sgx' is specified as the
test target. This patch fixes that problem, along with minor changes to the
dependencies between 'x86' and 'x86/sgx' in selftests/x86/Makefile.

Signed-off-by: Cedric Xing <cedric.xing@xxxxxxxxx>
---
tools/testing/selftests/x86/Makefile | 12 +++----
tools/testing/selftests/x86/sgx/Makefile | 45 +++++++++---------------
2 files changed, 22 insertions(+), 35 deletions(-)

diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile
index 4fc9a42f56ea..1294c5f5b6ca 100644
--- a/tools/testing/selftests/x86/Makefile
+++ b/tools/testing/selftests/x86/Makefile
@@ -70,11 +70,11 @@ all_32: $(BINARIES_32)
all_64: $(BINARIES_64)
-all_64: $(SUBDIRS_64)
- @for DIR in $(SUBDIRS_64); do \
- BUILD_TARGET=$(OUTPUT)/$$DIR; \
- mkdir $$BUILD_TARGET -p; \
- make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \
+all_64: | $(SUBDIRS_64)
+ @for DIR in $|; do \
+ BUILD_TARGET=$(OUTPUT)/$$DIR; \
+ mkdir $$BUILD_TARGET -p; \
+ $(MAKE) OUTPUT=$$BUILD_TARGET -C $$DIR $@; \

This is not fix for anything. It is change in semantics. This diff
should be isolated to its own commit as you are changing something
outside of SGX scope.

I have removed all changes to x86/Makefile from v4.

The current x86/Makefile only builds but cannot run sgx selftest. I don't see it as an urgent issue though.

done
EXTRA_CLEAN := $(BINARIES_32) $(BINARIES_64)
@@ -90,7 +90,7 @@ ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),01)
all: warn_32bit_failure
warn_32bit_failure:
- @echo "Warning: you seem to have a broken 32-bit build" 2>&1; \
+ @echo "Warning: you seem to have a broken 32-bit build" 2>&1; \

Please clean this up.

echo "environment. This will reduce test coverage of 64-bit" 2>&1; \
echo "kernels. If you are using a Debian-like distribution," 2>&1; \
echo "try:"; 2>&1; \
diff --git a/tools/testing/selftests/x86/sgx/Makefile b/tools/testing/selftests/x86/sgx/Makefile
index 1fd6f2708e81..3af15d7c8644 100644
--- a/tools/testing/selftests/x86/sgx/Makefile
+++ b/tools/testing/selftests/x86/sgx/Makefile
@@ -2,47 +2,34 @@ top_srcdir = ../../../../..
include ../../lib.mk
-HOST_CFLAGS := -Wall -Werror -g $(INCLUDES) -fPIC
-ENCL_CFLAGS := -Wall -Werror -static -nostdlib -nostartfiles -fPIC \
+ifeq ($(shell $(CC) -dumpmachine | cut --delimiter=- -f1),x86_64)
+all: all_64
+endif
+
+HOST_CFLAGS := -Wall -Werror -g $(INCLUDES)
+ENCL_CFLAGS := -Wall -Werror -static -nostdlib -nostartfiles -fPIE \
-fno-stack-protector -mrdrnd $(INCLUDES)
TEST_CUSTOM_PROGS := $(OUTPUT)/test_sgx
all_64: $(TEST_CUSTOM_PROGS)
-$(TEST_CUSTOM_PROGS): $(OUTPUT)/main.o $(OUTPUT)/sgx_call.o \
- $(OUTPUT)/encl_piggy.o
+$(TEST_CUSTOM_PROGS): main.c sgx_call.S $(OUTPUT)/encl_piggy.o
$(CC) $(HOST_CFLAGS) -o $@ $^
-$(OUTPUT)/main.o: main.c
- $(CC) $(HOST_CFLAGS) -c $< -o $@
-
-$(OUTPUT)/sgx_call.o: sgx_call.S
- $(CC) $(HOST_CFLAGS) -c $< -o $@
-
-$(OUTPUT)/encl_piggy.o: $(OUTPUT)/encl.bin $(OUTPUT)/encl.ss
- $(CC) $(HOST_CFLAGS) -c encl_piggy.S -o $@
+$(OUTPUT)/encl_piggy.o: encl_piggy.S $(OUTPUT)/encl.bin $(OUTPUT)/encl.ss
+ $(CC) $(HOST_CFLAGS) -I$(OUTPUT) -c $< -o $@
-$(OUTPUT)/encl.bin: $(OUTPUT)/encl.elf $(OUTPUT)/sgxsign
+$(OUTPUT)/encl.bin: $(OUTPUT)/encl.elf
objcopy --remove-section=.got.plt -O binary $< $@
-$(OUTPUT)/encl.elf: $(OUTPUT)/encl.o $(OUTPUT)/encl_bootstrap.o
- $(CC) $(ENCL_CFLAGS) -T encl.lds -o $@ $^
+$(OUTPUT)/encl.elf: encl.lds encl.c encl_bootstrap.S
+ $(CC) $(ENCL_CFLAGS) -T $^ -o $@
-$(OUTPUT)/encl.o: encl.c
- $(CC) $(ENCL_CFLAGS) -c $< -o $@
-
-$(OUTPUT)/encl_bootstrap.o: encl_bootstrap.S
- $(CC) $(ENCL_CFLAGS) -c $< -o $@
-
-$(OUTPUT)/encl.ss: $(OUTPUT)/encl.bin $(OUTPUT)/sgxsign
- $(OUTPUT)/sgxsign signing_key.pem $(OUTPUT)/encl.bin $(OUTPUT)/encl.ss
+$(OUTPUT)/encl.ss: $(OUTPUT)/sgxsign signing_key.pem $(OUTPUT)/encl.bin
+ $^ $@
$(OUTPUT)/sgxsign: sgxsign.c
$(CC) -o $@ $< -lcrypto
-EXTRA_CLEAN := $(OUTPUT)/sgx-selftest $(OUTPUT)/sgx-selftest.o \
- $(OUTPUT)/sgx_call.o $(OUTPUT)/encl.bin $(OUTPUT)/encl.ss \
- $(OUTPUT)/encl.elf $(OUTPUT)/encl.o $(OUTPUT)/encl_bootstrap.o \
- $(OUTPUT)/sgxsign
-
-.PHONY: clean
+EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(addprefix $(OUTPUT)/, \
+ encl.elf encl.bin encl.ss encl_piggy.o sgxsign)
--
2.17.1


What are all these changes to the makefile? I don't see mention of them
in the commit message.

Added description to the commit message in v4.

/Jarkko