selftests, x86: Rework x86 target architecture detection (e9886ace) · Commits · 戴 / test

tools/testing/selftests/x86/Makefile

+29 −26

Original line number	Diff line number	Diff line
		.PHONY: all all_32 all_64 check_build32 clean
		all:

		include ../lib.mk

		.PHONY: all all_32 all_64 warn_32bit_failure clean

		TARGETS_C_BOTHBITS := sigreturn single_step_syscall

		@@ -7,29 +11,24 @@ BINARIES_64 := $(TARGETS_C_BOTHBITS:%=%_64)

		CFLAGS := -O2 -g -std=gnu99 -pthread -Wall

		all:

		UNAME_M := $(shell uname -m)
		CAN_BUILD_I386 := $(shell ./check_cc.sh $(CC) trivial_32bit_program.c -m32)
		CAN_BUILD_X86_64 := $(shell ./check_cc.sh $(CC) trivial_64bit_program.c)

		ifeq ($(CROSS_COMPILE),)
		# Always build 32-bit tests
		ifeq ($(CAN_BUILD_I386),1)
		all: all_32
		# Install 32-bit tests
		TEST_PROGS += $(BINARIES_32)
		# If we're on a 64-bit host, build 64-bit tests as well
		ifeq ($(UNAME_M),x86_64)
		endif

		ifeq ($(CAN_BUILD_X86_64),1)
		all: all_64
		# Install 64-bit tests
		TEST_PROGS += $(BINARIES_64)
		endif
		endif

		all_32: check_build32 $(BINARIES_32)
		all_32: $(BINARIES_32)

		all_64: $(BINARIES_64)

		include ../lib.mk

		clean:
		$(RM) $(BINARIES_32) $(BINARIES_64)

		@@ -39,16 +38,20 @@ $(TARGETS_C_BOTHBITS:%=%_32): %_32: %.c
		$(TARGETS_C_BOTHBITS:%=%_64): %_64: %.c
		$(CC) -m64 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $^ -lrt -ldl

		check_build32:
		@if ! $(CC) -m32 -o /dev/null trivial_32bit_program.c; then \
		echo "Warning: you seem to have a broken 32-bit build" 2>&1; \
		echo "environment. If you are using a Debian-like"; \
		echo " distribution, try:"; \
		# x86_64 users should be encouraged to install 32-bit libraries
		ifeq ($(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 "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; \
		echo ""; \
		echo " apt-get install gcc-multilib libc6-i386 libc6-dev-i386"; \
		echo ""; \
		echo "If you are using a Fedora-like distribution, try:"; \
		echo ""; \
		echo " yum install glibc-devel.*i686"; \
		exit 1; \
		fi
		exit 0;
		endif

tools/testing/selftests/x86/check_cc.sh

0 → 100755

+16 −0

Original line number	Diff line number	Diff line
		#!/bin/sh
		# check_cc.sh - Helper to test userspace compilation support
		# Copyright (c) 2015 Andrew Lutomirski
		# GPL v2

		CC="$1"
		TESTPROG="$2"
		shift 2

		if "$CC" -o /dev/null "$TESTPROG" -O0 "$@" 2>/dev/null; then
		echo 1
		else
		echo 0
		fi

		exit 0

tools/testing/selftests/x86/trivial_32bit_program.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -4,6 +4,10 @@
		* GPL v2
		*/

		#ifndef __i386__
		# error wrong architecture
		#endif

		#include <stdio.h>

		int main()

tools/testing/selftests/x86/trivial_64bit_program.c

0 → 100644

+18 −0

Original line number	Diff line number	Diff line
		/*
		* Trivial program to check that we have a valid 32-bit build environment.
		* Copyright (c) 2015 Andy Lutomirski
		* GPL v2
		*/

		#ifndef __x86_64__
		# error wrong architecture
		#endif

		#include <stdio.h>

		int main()
		{
		printf("\n");

		return 0;
		}

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