Test case for the following regression:
https://www.xenomai.org/pipermail/xenomai/2022-March/047451.html
Signed-off-by: Richard Weinberger <rich...@nod.at>
---
configure.ac | 2 +
testsuite/smokey/Makefile.am | 7 +++
testsuite/smokey/x86io/Makefile.am | 7 +++
testsuite/smokey/x86io/x86io.c | 77 ++++++++++++++++++++++++++++++
4 files changed, 93 insertions(+)
create mode 100644 testsuite/smokey/x86io/Makefile.am
create mode 100644 testsuite/smokey/x86io/x86io.c
diff --git a/configure.ac b/configure.ac
index 019453793..62506de69 100644
--- a/configure.ac
+++ b/configure.ac
@@ -169,6 +169,7 @@ esac
AC_MSG_RESULT([$target_cpu_arch])
XENO_TARGET_ARCH=$target_cpu_arch
+AM_CONDITIONAL(XENO_X86,[test x$target_cpu_arch = xx86])
AC_ENABLE_SHARED
AC_PROG_LIBTOOL
@@ -1044,6 +1045,7 @@ AC_CONFIG_FILES([ \
testsuite/smokey/gdb/Makefile \
testsuite/smokey/y2038/Makefile \
testsuite/smokey/can/Makefile
+ testsuite/smokey/x86io/Makefile
testsuite/clocktest/Makefile \
testsuite/xeno-test/Makefile \
utils/Makefile \
diff --git a/testsuite/smokey/Makefile.am b/testsuite/smokey/Makefile.am
index 4a9773f58..79dc61e9f 100644
--- a/testsuite/smokey/Makefile.am
+++ b/testsuite/smokey/Makefile.am
@@ -82,6 +82,10 @@ DIST_SUBDIRS = \
xddp \
y2038
+if XENO_X86
+DIST_SUBDIRS += x86io
+endif
+
if XENO_COBALT
if CONFIG_XENO_LIBS_DLOPEN
COBALT_SUBDIRS += dlopen
@@ -89,6 +93,9 @@ endif
if XENO_PSHARED
COBALT_SUBDIRS += memory-pshared
endif
+if XENO_X86
+COBALT_SUBDIRS += x86io
+endif
wrappers = $(XENO_POSIX_WRAPPERS)
SUBDIRS = $(COBALT_SUBDIRS)
else
diff --git a/testsuite/smokey/x86io/Makefile.am
b/testsuite/smokey/x86io/Makefile.am
new file mode 100644
index 000000000..d623af042
--- /dev/null
+++ b/testsuite/smokey/x86io/Makefile.am
@@ -0,0 +1,7 @@
+noinst_LIBRARIES = libx86io.a
+
+libx86io_a_SOURCES = x86io.c
+
+libx86io_a_CPPFLAGS = \
+ @XENO_USER_CFLAGS@ \
+ -I$(top_srcdir)/include
diff --git a/testsuite/smokey/x86io/x86io.c b/testsuite/smokey/x86io/x86io.c
new file mode 100644
index 000000000..0996d8941
--- /dev/null
+++ b/testsuite/smokey/x86io/x86io.c
@@ -0,0 +1,77 @@
+/*
+ * Test for a working iopl() after a regression on 5.15:
+ * https://www.xenomai.org/pipermail/xenomai/2022-March/047451.html
+ *
+ * Copyright (C) 2022 sigma star gmbh
+ * Author Richard Weinberger <rich...@sigma-star.at>
+ *
+ * Released under the terms of GPLv2.
+ */
+#include <pthread.h>
+#include <sched.h>
+#include <signal.h>
+#include <smokey/smokey.h>
+#include <string.h>
+#include <sys/io.h>
+#include <unistd.h>
+
+#define PORT (0x378)
+
+static int saw_segv;
+
+static void *tfn(void *d)
+{
+ struct sched_param schedp = {0};
+ int ret;
+
+ schedp.sched_priority = 1;
+ __Terrno(ret, sched_setscheduler(0, SCHED_FIFO, &schedp));
+
+ (void)inb(PORT);
+
+ return (void *)(unsigned long)ret;
+}
+
+static void sgfn(int sig, siginfo_t *si, void *ctx)
+{
+ saw_segv = 1;
+}
+
+smokey_test_plugin(x86io, SMOKEY_NOARGS, "Check x86 port io");
+
+int run_x86io(struct smokey_test *t, int argc, char *const argv[])
+{
+ struct sigaction sa, old_sa;
+ unsigned long ptret;
+ int ret = 0;
+ pthread_t pt;
+
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_sigaction = sgfn;
+ sa.sa_flags = SA_SIGINFO;
+ sigemptyset(&sa.sa_mask);
+
+ if (!__Terrno(ret, sigaction(SIGSEGV, &sa, &old_sa)))
+ goto out;
+
+ if (!__Terrno(ret, iopl(3)))
+ goto out;
+
+ if (!__T(ret, pthread_create(&pt, NULL, tfn, NULL)))
+ goto out;
+
+ if (!__T(ret, pthread_join(pt, (void *)&ptret)))
+ goto out;
+
+ if (!__Terrno(ret, sigaction(SIGSEGV, &old_sa, NULL)))
+ goto out;
+
+out:
+ if (ret)
+ return -ret;
+ if (ptret)
+ return -ptret;
+ if (saw_segv)
+ return -EFAULT;
+ return 0;
+}
--
2.34.1
