1 files changed, 139 insertions, 0 deletions
diff --git a/tests/tcg/hexagon/atomics.c b/tests/tcg/hexagon/atomics.c
new file mode 100644
index 0000000000..ff1ceee241
--- /dev/null
+++ b/tests/tcg/hexagon/atomics.c
@@ -0,0 +1,139 @@
+/*
+ *  Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <pthread.h>
+
+/* Using volatile because we are testing atomics */
+static inline int atomic_inc32(volatile int *x)
+{
+    int old, dummy;
+    __asm__ __volatile__(
+        "1: %0 = memw_locked(%2)\n\t"
+        "   %1 = add(%0, #1)\n\t"
+        "   memw_locked(%2, p0) = %1\n\t"
+        "   if (!p0) jump 1b\n\t"
+        : "=&r"(old), "=&r"(dummy)
+        : "r"(x)
+        : "p0", "memory");
+    return old;
+}
+
+/* Using volatile because we are testing atomics */
+static inline long long atomic_inc64(volatile long long *x)
+{
+    long long old, dummy;
+    __asm__ __volatile__(
+        "1: %0 = memd_locked(%2)\n\t"
+        "   %1 = #1\n\t"
+        "   %1 = add(%0, %1)\n\t"
+        "   memd_locked(%2, p0) = %1\n\t"
+        "   if (!p0) jump 1b\n\t"
+        : "=&r"(old), "=&r"(dummy)
+        : "r"(x)
+        : "p0", "memory");
+    return old;
+}
+
+/* Using volatile because we are testing atomics */
+static inline int atomic_dec32(volatile int *x)
+{
+    int old, dummy;
+    __asm__ __volatile__(
+        "1: %0 = memw_locked(%2)\n\t"
+        "   %1 = add(%0, #-1)\n\t"
+        "   memw_locked(%2, p0) = %1\n\t"
+        "   if (!p0) jump 1b\n\t"
+        : "=&r"(old), "=&r"(dummy)
+        : "r"(x)
+        : "p0", "memory");
+    return old;
+}
+
+/* Using volatile because we are testing atomics */
+static inline long long atomic_dec64(volatile long long *x)
+{
+    long long old, dummy;
+    __asm__ __volatile__(
+        "1: %0 = memd_locked(%2)\n\t"
+        "   %1 = #-1\n\t"
+        "   %1 = add(%0, %1)\n\t"
+        "   memd_locked(%2, p0) = %1\n\t"
+        "   if (!p0) jump 1b\n\t"
+        : "=&r"(old), "=&r"(dummy)
+        : "r"(x)
+        : "p0", "memory");
+    return old;
+}
+
+#define LOOP_CNT 1000
+/* Using volatile because we are testing atomics */
+volatile int tick32 = 1;
+/* Using volatile because we are testing atomics */
+volatile long long tick64 = 1;
+int err;
+
+void *thread1_func(void *arg)
+{
+    int i;
+
+    for (i = 0; i < LOOP_CNT; i++) {
+        atomic_inc32(&tick32);
+        atomic_dec64(&tick64);
+    }
+    return NULL;
+}
+
+void *thread2_func(void *arg)
+{
+    int i;
+    for (i = 0; i < LOOP_CNT; i++) {
+        atomic_dec32(&tick32);
+        atomic_inc64(&tick64);
+    }
+    return NULL;
+}
+
+void test_pthread(void)
+{
+    pthread_t tid1, tid2;
+
+    pthread_create(&tid1, NULL, thread1_func, "hello1");
+    pthread_create(&tid2, NULL, thread2_func, "hello2");
+    pthread_join(tid1, NULL);
+    pthread_join(tid2, NULL);
+
+    if (tick32 != 1) {
+        printf("ERROR: tick32 %d != 1\n", tick32);
+        err++;
+    }
+    if (tick64 != 1) {
+        printf("ERROR: tick64 %lld != 1\n", tick64);
+        err++;
+    }
+}
+
+int main(int argc, char **argv)
+{
+    test_pthread();
+    puts(err ? "FAIL" : "PASS");
+    return err;
+}