[MIPS64] add atomic-mips64

Supplied by Broadcom.

Change-Id: Ica8f4f6e713623e372a68e1dc11086ceb52516da

2 files changed, 253 insertions, 0 deletions

diff --git a/include/cutils/atomic-inline.h b/include/cutils/atomic-inline.h
index 4f90ef1..007a905 100644
--- a/include/cutils/atomic-inline.h
+++ b/include/cutils/atomic-inline.h
@@ -51,6 +51,8 @@ extern "C" {
 #include <cutils/atomic-x86.h>
 #elif defined(__x86_64__)
 #include <cutils/atomic-x86_64.h>
+#elif defined(__mips64)
+#include <cutils/atomic-mips64.h>
 #elif defined(__mips__)
 #include <cutils/atomic-mips.h>
 #else
diff --git a/include/cutils/atomic-mips64.h b/include/cutils/atomic-mips64.h
new file mode 100644
index 0000000..382f209
--- /dev/null
+++ b/include/cutils/atomic-mips64.h
@@ -0,0 +1,251 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_CUTILS_ATOMIC_MIPS64_H
+#define ANDROID_CUTILS_ATOMIC_MIPS64_H
+
+#include <stdint.h>
+
+#ifndef ANDROID_ATOMIC_INLINE
+#define ANDROID_ATOMIC_INLINE inline __attribute__((always_inline))
+#endif
+
+extern ANDROID_ATOMIC_INLINE void android_compiler_barrier(void)
+{
+    __asm__ __volatile__ ("" : : : "memory");
+}
+
+#if ANDROID_SMP == 0
+extern ANDROID_ATOMIC_INLINE void android_memory_barrier(void)
+{
+    android_compiler_barrier();
+}
+extern ANDROID_ATOMIC_INLINE void android_memory_store_barrier(void)
+{
+    android_compiler_barrier();
+}
+#else
+extern ANDROID_ATOMIC_INLINE void android_memory_barrier(void)
+{
+    __asm__ __volatile__ ("sync" : : : "memory");
+}
+extern ANDROID_ATOMIC_INLINE void android_memory_store_barrier(void)
+{
+    __asm__ __volatile__ ("sync" : : : "memory");
+}
+#endif
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_acquire_load(volatile const int32_t *ptr)
+{
+    int32_t value = *ptr;
+    android_memory_barrier();
+    return value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int64_t android_atomic_acquire_load64(volatile const int64_t *ptr)
+{
+    int64_t value = *ptr;
+    android_memory_barrier();
+    return value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_release_load(volatile const int32_t *ptr)
+{
+    android_memory_barrier();
+    return *ptr;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int64_t android_atomic_release_load64(volatile const int64_t *ptr)
+{
+    android_memory_barrier();
+    return *ptr;
+}
+
+extern ANDROID_ATOMIC_INLINE
+void android_atomic_acquire_store(int32_t value, volatile int32_t *ptr)
+{
+    *ptr = value;
+    android_memory_barrier();
+}
+
+extern ANDROID_ATOMIC_INLINE
+void android_atomic_acquire_store64(int64_t value, volatile int64_t *ptr)
+{
+    *ptr = value;
+    android_memory_barrier();
+}
+
+extern ANDROID_ATOMIC_INLINE
+void android_atomic_release_store(int32_t value, volatile int32_t *ptr)
+{
+    android_memory_barrier();
+    *ptr = value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+void android_atomic_release_store64(int64_t value, volatile int64_t *ptr)
+{
+    android_memory_barrier();
+    *ptr = value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int android_atomic_cas(int32_t old_value, int32_t new_value, volatile int32_t *ptr)
+{
+    int32_t prev, status;
+    do {
+        __asm__ __volatile__ (
+            "    ll     %[prev], (%[ptr])\n"
+            "    li     %[status], 1\n"
+            "    bne    %[prev], %[old], 9f\n"
+            "    move   %[status], %[new_value]\n"
+            "    sc     %[status], (%[ptr])\n"
+            "9:\n"
+            : [prev] "=&r" (prev), [status] "=&r" (status)
+            : [ptr] "r" (ptr), [old] "r" (old_value), [new_value] "r" (new_value)
+            );
+    } while (__builtin_expect(status == 0, 0));
+    return prev != old_value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int64_t android_atomic_cas64(int64_t old_value, int64_t new_value,
+                             volatile int64_t *ptr)
+{
+    return __sync_val_compare_and_swap(ptr, old_value, new_value) != old_value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int android_atomic_acquire_cas(int32_t old_value,
+                           int32_t new_value,
+                           volatile int32_t *ptr)
+{
+    int status = android_atomic_cas(old_value, new_value, ptr);
+    android_memory_barrier();
+    return status;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int64_t android_atomic_acquire_cas64(int64_t old_value, int64_t new_value,
+                                     volatile int64_t *ptr)
+{
+    int status = android_atomic_cas64(old_value, new_value, ptr);
+    android_memory_barrier();
+    return status;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int android_atomic_release_cas(int32_t old_value,
+                           int32_t new_value,
+                           volatile int32_t *ptr)
+{
+    android_memory_barrier();
+    return android_atomic_cas(old_value, new_value, ptr);
+}
+
+extern ANDROID_ATOMIC_INLINE
+int64_t android_atomic_release_cas64(int64_t old_value, int64_t new_value,
+                                     volatile int64_t *ptr)
+{
+    android_memory_barrier();
+    return android_atomic_cas64(old_value, new_value, ptr);
+}
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_swap(int32_t new_value, volatile int32_t *ptr)
+{
+    int32_t prev, status;
+    do {
+    __asm__ __volatile__ (
+        "    move %[status], %[new_value]\n"
+        "    ll %[prev], (%[ptr])\n"
+        "    sc %[status], (%[ptr])\n"
+        : [prev] "=&r" (prev), [status] "=&r" (status)
+        : [ptr] "r" (ptr), [new_value] "r" (new_value)
+        );
+    } while (__builtin_expect(status == 0, 0));
+    android_memory_barrier();
+    return prev;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_add(int32_t increment, volatile int32_t *ptr)
+{
+    int32_t prev, status;
+    android_memory_barrier();
+    do {
+        __asm__ __volatile__ (
+        "    ll    %[prev], (%[ptr])\n"
+        "    addu  %[status], %[prev], %[inc]\n"
+        "    sc    %[status], (%[ptr])\n"
+        :  [status] "=&r" (status), [prev] "=&r" (prev)
+        :  [ptr] "r" (ptr), [inc] "Ir" (increment)
+        );
+    } while (__builtin_expect(status == 0, 0));
+    return prev;
+}
+
+extern ANDROID_ATOMIC_INLINE int32_t
+android_atomic_inc(volatile int32_t *addr)
+{
+    return android_atomic_add(1, addr);
+}
+
+extern ANDROID_ATOMIC_INLINE int32_t
+android_atomic_dec(volatile int32_t *addr)
+{
+    return android_atomic_add(-1, addr);
+}
+
+extern ANDROID_ATOMIC_INLINE int32_t
+android_atomic_and(int32_t value, volatile int32_t *ptr)
+{
+    int32_t prev, status;
+    android_memory_barrier();
+    do {
+        __asm__ __volatile__ (
+        "    ll    %[prev], (%[ptr])\n"
+        "    and   %[status], %[prev], %[value]\n"
+        "    sc    %[status], (%[ptr])\n"
+        : [prev] "=&r" (prev), [status] "=&r" (status)
+        : [ptr] "r" (ptr), [value] "Ir" (value)
+            );
+    } while (__builtin_expect(status == 0, 0));
+    return prev;
+}
+
+extern ANDROID_ATOMIC_INLINE int32_t
+android_atomic_or(int32_t value, volatile int32_t *ptr)
+{
+    int32_t prev, status;
+    android_memory_barrier();
+    do {
+        __asm__ __volatile__ (
+        "    ll    %[prev], (%[ptr])\n"
+        "    or    %[status], %[prev], %[value]\n"
+        "    sc    %[status], (%[ptr])\n"
+        : [prev] "=&r" (prev), [status] "=&r" (status)
+        : [ptr] "r" (ptr), [value] "Ir" (value)
+            );
+    } while (__builtin_expect(status == 0, 0));
+    return prev;
+}
+
+#endif /* ANDROID_CUTILS_ATOMIC_MIPS_H */