@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
TARGETS += alsa
TARGETS += amd-pstate
+TARGETS += arm
TARGETS += arm64
TARGETS += bpf
TARGETS += breakpoints
new file mode 100644
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: GPL-2.0
+
+ARCH ?= $(shell uname -m 2>/dev/null || echo not)
+
+ifneq (,$(filter $(ARCH),aarch64 arm64 arm armv7l armv8l))
+ARM_SUBTARGETS ?= abi elf mm signal
+else
+ARM_SUBTARGETS :=
+endif
+
+CFLAGS := -Wall -O2 -g -static
+
+# A proper top_srcdir is needed by KSFT(lib.mk)
+top_srcdir = $(realpath ../../../../)
+
+# Additional include paths needed by kselftest.h and local headers
+CFLAGS += -I$(top_srcdir)/tools/testing/selftests/
+
+CFLAGS += -I$(top_srcdir)/tools/include
+
+export CFLAGS
+export top_srcdir
+
+all:
+ @for DIR in $(ARM_SUBTARGETS); do \
+ BUILD_TARGET=$(OUTPUT)/$$DIR; \
+ mkdir -p $$BUILD_TARGET; \
+ make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \
+ done
+
+install: all
+ @for DIR in $(ARM_SUBTARGETS); do \
+ BUILD_TARGET=$(OUTPUT)/$$DIR; \
+ make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \
+ done
+
+run_tests: all
+ @for DIR in $(ARM_SUBTARGETS); do \
+ BUILD_TARGET=$(OUTPUT)/$$DIR; \
+ make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \
+ done
+
+# Avoid any output on non arm on emit_tests
+emit_tests:
+ @for DIR in $(ARM_SUBTARGETS); do \
+ BUILD_TARGET=$(OUTPUT)/$$DIR; \
+ make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \
+ done
+
+clean:
+ @for DIR in $(ARM_SUBTARGETS); do \
+ BUILD_TARGET=$(OUTPUT)/$$DIR; \
+ make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \
+ done
+
+.PHONY: all clean install run_tests emit_tests
new file mode 100644
@@ -0,0 +1,32 @@
+KSelfTest ARM
+===============
+
+- This is a series of compatibility tests, wherein the source files are
+ built statically into a 32 bit ELF; they should pass on both 32 and 64
+ bit kernels. They are not built or run but just skipped completely when
+ env-variable ARCH is found to be different than 'arm64' or 'arm' and
+ `uname -m` reports other than 'aarch64', 'armv7l' or 'armv8l'.
+
+- If building the tests on a 64-bit kernel, please ensure that the kernel is
+ built with CONFIG_COMPAT enabled.
+
+- Holding true the above, ARM KSFT tests can be run within the KSelfTest
+ framework using standard Linux top-level-makefile targets. Please set
+ $(CROSS_COMPILE) to 'arm-linux-gnueabi-' or 'arm-linux-gnueabihf-'.
+
+ $ make TARGETS=arm kselftest-clean
+ $ make $(CROSS_COMPILE) TARGETS=arm kselftest
+
+ or
+
+ $ make $(CROSS_COMPILE) -C tools/testing/selftests TARGETS=arm \
+ INSTALL_PATH=<your-installation-path> install
+
+ or, alternatively, only specific arm/ subtargets can be picked:
+
+ $ make $(CROSS_COMPILE) -C tools/testing/selftests TARGETS=arm \
+ ARM_SUBTARGETS="signal" INSTALL_PATH=<your-installation-path> \
+ install
+
+ Further details on building and running KFST can be found in:
+ Documentation/dev-tools/kselftest.rst
new file mode 100644
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
+ptrace
+ptrace_64
+trivial_32bit_program
new file mode 100644
@@ -0,0 +1,26 @@
+# SPDX-License-Identifier: GPL-2.0-only
+# Copyright (C) 2024 ARM Limited
+
+TEST_GEN_PROGS := ptrace
+
+include ../../lib.mk
+
+# Do not build 64-bit programs if running on a native 32-bit kernel
+UNAME_M := $(shell uname -m)
+ifneq (,$(filter $(UNAME_M),aarch64 arm64))
+TEST_CUSTOM_PROGS := $(OUTPUT)/ptrace_64
+
+TRIVIAL_32BIT := $(OUTPUT)/trivial_32bit_program
+
+all: $(TEST_CUSTOM_PROGS) $(TRIVIAL_32BIT)
+
+
+$(TRIVIAL_32BIT): $(OUTPUT)/%: %.c
+ $(CC) -o $@ $^ -static
+
+$(OUTPUT)/ptrace_64: ptrace_64.c ptrace.h
+ gcc -o $@ $^
+
+EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(TRIVIAL_32BIT)
+endif
+
new file mode 100644
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+parse_elf
new file mode 100644
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2024 ARM Limited
+
+TEST_GEN_PROGS := parse_elf
+
+include ../../lib.mk
new file mode 100644
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+compat_va
new file mode 100644
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2024 ARM Limited
+
+TEST_GEN_PROGS := compat_va
+
+include ../../lib.mk
new file mode 100644
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-only
+mangle_cpsr_invalid_aif_bits
+mangle_cpsr_invalid_compat_toggle
new file mode 100644
@@ -0,0 +1,30 @@
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2024 ARM Limited
+
+# Additional include paths needed by kselftest.h and local headers
+CFLAGS += -D_GNU_SOURCE -std=gnu99 -I.
+
+SRCS := $(filter-out testcases/testcases.c,$(wildcard testcases/*.c))
+PROGS := $(patsubst %.c,%,$(SRCS))
+
+# Generated binaries to be installed by top KSFT script
+TEST_GEN_PROGS := $(notdir $(PROGS))
+
+# Get Kernel headers installed and use them.
+
+# Including KSFT lib.mk here will also mangle the TEST_GEN_PROGS list
+# to account for any OUTPUT target-dirs optionally provided by
+# the toplevel makefile
+include ../../lib.mk
+
+$(TEST_GEN_PROGS): $(PROGS)
+ cp $(PROGS) $(OUTPUT)/
+
+# Common test-unit targets to build common-layout test-cases executables
+# Needs secondary expansion to properly include the testcase c-file in pre-reqs
+COMMON_SOURCES := test_signals.c test_signals_utils.c
+COMMON_HEADERS := test_signals.h test_signals_utils.h
+
+.SECONDEXPANSION:
+$(PROGS): $$@.c ${COMMON_SOURCES} ${COMMON_HEADERS}
+ $(CC) $(CFLAGS) ${@}.c ${COMMON_SOURCES} -o $@
Add arm target, individual Makefile targets, and instructions to build the tests, along with .gitignore files. All the Makefiles are similar to selftests/arm64, except abi: use TEST_CUSTOM_PROGS to override the make rule from lib.mk. Also, do not build ptrace_64 if we are running a 32-bit kernel. Signed-off-by: Dev Jain <dev.jain@arm.com> --- v2->v3: - Add abi Makefile and .gitignore - Remove config file v1->v2: - Add config file tools/testing/selftests/Makefile | 1 + tools/testing/selftests/arm/Makefile | 56 +++++++++++++++++++ tools/testing/selftests/arm/README | 32 +++++++++++ tools/testing/selftests/arm/abi/.gitignore | 4 ++ tools/testing/selftests/arm/abi/Makefile | 26 +++++++++ tools/testing/selftests/arm/elf/.gitignore | 2 + tools/testing/selftests/arm/elf/Makefile | 6 ++ tools/testing/selftests/arm/mm/.gitignore | 2 + tools/testing/selftests/arm/mm/Makefile | 6 ++ tools/testing/selftests/arm/signal/.gitignore | 3 + tools/testing/selftests/arm/signal/Makefile | 30 ++++++++++ 11 files changed, 168 insertions(+) create mode 100644 tools/testing/selftests/arm/Makefile create mode 100644 tools/testing/selftests/arm/README create mode 100644 tools/testing/selftests/arm/abi/.gitignore create mode 100644 tools/testing/selftests/arm/abi/Makefile create mode 100644 tools/testing/selftests/arm/elf/.gitignore create mode 100644 tools/testing/selftests/arm/elf/Makefile create mode 100644 tools/testing/selftests/arm/mm/.gitignore create mode 100644 tools/testing/selftests/arm/mm/Makefile create mode 100644 tools/testing/selftests/arm/signal/.gitignore create mode 100644 tools/testing/selftests/arm/signal/Makefile