[lkml]   [2023]   [Jan]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[PATCH 2/2] selftests/nolibc: add a "run-user" target to test the program in user land
I found that when developing tests I'm not that often building kernels,
and instead I'm often using the much quicker QEMU Linux emulator instead
of the system emulator. It is sufficient to test startup code, stdlib
code and syscall calling convention. As such it is expected that other
users will value this, so let's add a "run-user" target that immediately
executes the prebuilt executable with the user's privilege (thus some
tests may fail due to insufficient permissions or missing features in
the local kernel).

Now running a userland test is as simple as issuing:

make ARCH=xxx CROSS_COMPILE=xxx run-user

Signed-off-by: Willy Tarreau <>
tools/testing/selftests/nolibc/Makefile | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile
index 423598045ff1..8fe61d3e3cce 100644
--- a/tools/testing/selftests/nolibc/Makefile
+++ b/tools/testing/selftests/nolibc/Makefile
@@ -80,6 +80,7 @@ help:
@echo " help this help"
@echo " sysroot create the nolibc sysroot here (uses \$$ARCH)"
@echo " nolibc-test build the executable (uses \$$CC and \$$CROSS_COMPILE)"
+ @echo " run-user runs the executable under QEMU (uses \$$ARCH, \$$TEST)"
@echo " initramfs prepare the initramfs with nolibc-test"
@echo " defconfig create a fresh new default config (uses \$$ARCH)"
@echo " kernel (re)build the kernel with the initramfs (uses \$$ARCH)"
@@ -113,6 +114,11 @@ nolibc-test: nolibc-test.c sysroot/$(ARCH)/include
$(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \
-nostdlib -static -Isysroot/$(ARCH)/include $< -lgcc

+# qemu user-land test
+run-user: nolibc-test
+ $(Q)qemu-$(QEMU_ARCH) ./nolibc-test > "$(CURDIR)/run.out" || :
+ $(Q)grep -w FAIL "$(CURDIR)/run.out" && echo "See all results in $(CURDIR)/run.out" || echo "$$(grep -c ^[0-9].*OK $(CURDIR)/run.out) test(s) passed."
initramfs: nolibc-test
$(QUIET_MKDIR)mkdir -p initramfs
$(call QUIET_INSTALL, initramfs/init)
 \ /
  Last update: 2023-03-26 23:51    [W:0.156 / U:0.028 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site