Linux 2.1.3 Open Source Gold Release

Security updates to Linux SDK and PSW Support for Intel SGX Protected Code Loader Signed-off-by: Li, Xun <xun.li@intel.com>
2026-06-08 14:49:32 +00:00 · 2018-05-10 11:05:38 +08:00
parent 4b31cebfe5
commit 75dd558bda
1404 changed files with 92858 additions and 55199 deletions
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "../Enclave.h"
+#include "Enclave_t.h"
+
+#include "sgx_thread.h"
+
+static size_t global_counter = 0;
+static sgx_thread_mutex_t global_mutex = SGX_THREAD_MUTEX_INITIALIZER;
+
+#define BUFFER_SIZE 50
+
+typedef struct {
+    int buf[BUFFER_SIZE];
+    int occupied;
+    int nextin;
+    int nextout;
+    sgx_thread_mutex_t mutex;
+    sgx_thread_cond_t more;
+    sgx_thread_cond_t less;
+} cond_buffer_t;
+
+static cond_buffer_t buffer = {{0, 0, 0, 0, 0, 0}, 0, 0, 0,
+    SGX_THREAD_MUTEX_INITIALIZER, SGX_THREAD_COND_INITIALIZER, SGX_THREAD_COND_INITIALIZER};
+
+/*
+ * ecall_increase_counter:
+ *   Utilize thread APIs inside the enclave.
+ */
+size_t ecall_increase_counter(void)
+{
+    size_t ret = 0;
+    for (int i = 0; i < LOOPS_PER_THREAD; i++) {
+        sgx_thread_mutex_lock(&global_mutex);
+        /* mutually exclusive adding */
+        size_t tmp = global_counter;
+        global_counter = ++tmp;
+        if (4*LOOPS_PER_THREAD == global_counter)
+            ret = global_counter;
+        sgx_thread_mutex_unlock(&global_mutex);
+    }
+    return ret;
+}
+
+void ecall_producer(void)
+{
+    for (int i = 0; i < 4*LOOPS_PER_THREAD; i++) {
+        cond_buffer_t *b = &buffer;
+        sgx_thread_mutex_lock(&b->mutex);
+        while (b->occupied >= BUFFER_SIZE)
+            sgx_thread_cond_wait(&b->less, &b->mutex);
+        b->buf[b->nextin] = b->nextin;
+        b->nextin++;
+        b->nextin %= BUFFER_SIZE;
+        b->occupied++;
+        sgx_thread_cond_signal(&b->more);
+        sgx_thread_mutex_unlock(&b->mutex);
+    }
+}
+
+void ecall_consumer(void)
+{
+    for (int i = 0; i < LOOPS_PER_THREAD; i++) {
+        cond_buffer_t *b = &buffer;
+        sgx_thread_mutex_lock(&b->mutex);
+        while(b->occupied <= 0)
+            sgx_thread_cond_wait(&b->more, &b->mutex);
+        b->buf[b->nextout++] = 0;
+        b->nextout %= BUFFER_SIZE;
+        b->occupied--;
+        sgx_thread_cond_signal(&b->less);
+        sgx_thread_mutex_unlock(&b->mutex);
+    }
+}