From: "Paul E. McKenney" <[email protected]>
To: [email protected]
Cc: [email protected], [email protected], [email protected],
"Thomas Weißschuh" <[email protected]>,
"Willy Tarreau" <[email protected]>
Subject: [PATCH nolibc 19/19] selftests/nolibc: add tests for multi-object linkage
Date: Thu, 12 Oct 2023 12:32:33 -0700 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <b34ce3cf-3fcc-4eb0-a658-229c197455ef@paulmck-laptop>
From: Thomas Weißschuh <[email protected]>
While uncommon, nolibc executables can be linked together from multiple
compilation units.
Add some tests to make sure everything works in that case.
Signed-off-by: Thomas Weißschuh <[email protected]>
Link: https://lore.kernel.org/lkml/[email protected]/
Acked-by: Willy Tarreau <[email protected]>
---
tools/testing/selftests/nolibc/Makefile | 12 ++++-----
.../selftests/nolibc/nolibc-test-linkage.c | 26 +++++++++++++++++++
.../selftests/nolibc/nolibc-test-linkage.h | 9 +++++++
tools/testing/selftests/nolibc/nolibc-test.c | 4 +++
4 files changed, 45 insertions(+), 6 deletions(-)
create mode 100644 tools/testing/selftests/nolibc/nolibc-test-linkage.c
create mode 100644 tools/testing/selftests/nolibc/nolibc-test-linkage.h
diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile
index af60e07d3c12..a0fc07253baf 100644
--- a/tools/testing/selftests/nolibc/Makefile
+++ b/tools/testing/selftests/nolibc/Makefile
@@ -171,17 +171,17 @@ sysroot/$(ARCH)/include:
$(Q)mv sysroot/sysroot sysroot/$(ARCH)
ifneq ($(NOLIBC_SYSROOT),0)
-nolibc-test: nolibc-test.c sysroot/$(ARCH)/include
+nolibc-test: nolibc-test.c nolibc-test-linkage.c sysroot/$(ARCH)/include
$(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \
- -nostdlib -nostdinc -static -Isysroot/$(ARCH)/include $< -lgcc
+ -nostdlib -nostdinc -static -Isysroot/$(ARCH)/include nolibc-test.c nolibc-test-linkage.c -lgcc
else
-nolibc-test: nolibc-test.c
+nolibc-test: nolibc-test.c nolibc-test-linkage.c
$(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \
- -nostdlib -static -include ../../../include/nolibc/nolibc.h $< -lgcc
+ -nostdlib -static -include ../../../include/nolibc/nolibc.h nolibc-test.c nolibc-test-linkage.c -lgcc
endif
-libc-test: nolibc-test.c
- $(QUIET_CC)$(HOSTCC) -o $@ $<
+libc-test: nolibc-test.c nolibc-test-linkage.c
+ $(QUIET_CC)$(HOSTCC) -o $@ nolibc-test.c nolibc-test-linkage.c
# local libc-test
run-libc-test: libc-test
diff --git a/tools/testing/selftests/nolibc/nolibc-test-linkage.c b/tools/testing/selftests/nolibc/nolibc-test-linkage.c
new file mode 100644
index 000000000000..5ff4c8a1db2a
--- /dev/null
+++ b/tools/testing/selftests/nolibc/nolibc-test-linkage.c
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#include "nolibc-test-linkage.h"
+
+#ifndef NOLIBC
+#include <errno.h>
+#endif
+
+void *linkage_test_errno_addr(void)
+{
+ return &errno;
+}
+
+int linkage_test_constructor_test_value;
+
+__attribute__((constructor))
+static void constructor1(void)
+{
+ linkage_test_constructor_test_value = 2;
+}
+
+__attribute__((constructor))
+static void constructor2(void)
+{
+ linkage_test_constructor_test_value *= 3;
+}
diff --git a/tools/testing/selftests/nolibc/nolibc-test-linkage.h b/tools/testing/selftests/nolibc/nolibc-test-linkage.h
new file mode 100644
index 000000000000..c66473070d73
--- /dev/null
+++ b/tools/testing/selftests/nolibc/nolibc-test-linkage.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _NOLIBC_TEST_LINKAGE_H
+#define _NOLIBC_TEST_LINKAGE_H
+
+void *linkage_test_errno_addr(void);
+extern int linkage_test_constructor_test_value;
+
+#endif /* _NOLIBC_TEST_LINKAGE_H */
diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c
index 8da7f15d010e..2f10541e6f38 100644
--- a/tools/testing/selftests/nolibc/nolibc-test.c
+++ b/tools/testing/selftests/nolibc/nolibc-test.c
@@ -41,6 +41,8 @@
#endif
#endif
+#include "nolibc-test-linkage.h"
+
/* for the type of int_fast16_t and int_fast32_t, musl differs from glibc and nolibc */
#define SINT_MAX_OF_TYPE(type) (((type)1 << (sizeof(type) * 8 - 2)) - (type)1 + ((type)1 << (sizeof(type) * 8 - 2)))
#define SINT_MIN_OF_TYPE(type) (-SINT_MAX_OF_TYPE(type) - 1)
@@ -647,6 +649,8 @@ int run_startup(int min, int max)
CASE_TEST(auxv_addr); EXPECT_PTRGT(test_auxv != (void *)-1, test_auxv, brk); break;
CASE_TEST(auxv_AT_UID); EXPECT_EQ(1, getauxval(AT_UID), getuid()); break;
CASE_TEST(constructor); EXPECT_EQ(1, constructor_test_value, 2); break;
+ CASE_TEST(linkage_errno); EXPECT_PTREQ(1, linkage_test_errno_addr(), &errno); break;
+ CASE_TEST(linkage_constr); EXPECT_EQ(1, linkage_test_constructor_test_value, 6); break;
case __LINE__:
return ret; /* must be last */
/* note: do not set any defaults so as to permit holes above */
--
2.40.1
prev parent reply other threads:[~2023-10-12 19:32 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-12 19:32 [PATCH nolibc 0/19] Updates to nolibc for v6.7 (and three for v6.6) Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 01/19] tools/nolibc: i386: Fix a stack misalign bug on _start Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 02/19] MAINTAINERS: nolibc: update tree location Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 03/19] tools/nolibc: mark start_c as weak Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 04/19] tools/nolibc: add stdarg.h header Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 05/19] selftests/nolibc: use -nostdinc for nolibc-test Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 06/19] tools/nolibc: x86-64: Use `rep movsb` for `memcpy()` and `memmove()` Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 07/19] tools/nolibc: x86-64: Use `rep stosb` for `memset()` Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 08/19] tools/nolibc: string: Remove the `_nolibc_memcpy_down()` function Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 09/19] tools/nolibc: string: Remove the `_nolibc_memcpy_up()` function Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 10/19] selftests/nolibc: libc-test: avoid -Wstringop-overflow warnings Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 11/19] selftests/nolibc: don't embed initramfs into kernel image Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 12/19] selftests/nolibc: allow building i386 with multiarch compiler Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 13/19] tools/nolibc: avoid unused parameter warnings for ENOSYS fallbacks Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 14/19] tools/nolibc: don't define new syscall number Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 15/19] tools/nolibc: automatically detect necessity to use pselect6 Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 16/19] tools/nolibc: drop test for getauxval(AT_PAGESZ) Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 17/19] tools/nolibc: add support for constructors and destructors Paul E. McKenney
2023-10-12 19:32 ` [PATCH nolibc 18/19] selftests/nolibc: use qemu-system-ppc64 for ppc64le Paul E. McKenney
2023-10-12 19:32 ` Paul E. McKenney [this message]
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