JNI test case:

JniStaticContextFloat.c
#include <jni.h>
#include <stdlib.h>

#ifdef __cplusplus
extern "C" {
#endif

JNIEXPORT jfloat JNICALL Java_JniStaticContextFloat_staticMethodFloat1(JNIEnv *env, jclass cl, jfloat j0, jfloat j1, jfloat j2, jfloat j3)
{
    if (j0 != (float) (1) || j1 != (float) (2) || j2 != (float) (4) || j3 != (float)(8))
    {
        printf("JNI: %f %f %f %f\n", j0, j1, j2, j3);
        exit(1);
    }

    return 1;
}

JniStaticContextFloat.java
public class JniStaticContextFloat {

    final static int Count = 1024;

    public static synchronized native float staticMethodFloat1(float j0, float j1, float j2, float j3);

    public static void main(String[] args) throws Exception {
        System.load("/home/yangfei/test/JNI/libJniStatic.so");

        for (int c = 0; c < Count; c++) {
            Thread t = new Thread(new Runnable() {
                public void run() {
                    float d = JniStaticContextFloat.staticMethodFloat1((float) (1), (float) (2), (float) (4), (float) (8));
                }
            });
            t.start();
        }

        Thread.sleep(1000);

        System.out.println("PASS!");
    }

}

$gcc -I${JAVA_HOME}/include -I${JAVA_HOME}/include/linux -shared -fpic JniStaticContextFloat.c -o libJniStatic.so

$javac JniStaticContextFloat.java

$java JniStaticContextFloat

The above testcase randomly print the following message:
JNI: 8.000000 4.000000 2.000000 1.000000

Patch contributed by guoge1@huawei.com:

diff -r a25c48c0a1ab src/hotspot/cpu/aarch64/sharedRuntime_aarch64.cpp
--- a/src/hotspot/cpu/aarch64/sharedRuntime_aarch64.cpp Mon Jul 16 15:09:19 2018 -0700
+++ b/src/hotspot/cpu/aarch64/sharedRuntime_aarch64.cpp Thu Jul 19 15:14:08 2018 +0800
@@ -1107,7 +1107,7 @@
     }
   }
   __ pop(x, sp);
-  for ( int i = first_arg ; i < arg_count ; i++ ) {
+  for ( int i = arg_count - 1 ; i >= first_arg ; i-- ) {
     if (args[i].first()->is_Register()) {
       ;
     } else if (args[i].first()->is_FloatRegister()) {