2 * Copyright (c) 2014, Linaro Limited
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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30 #include <kernel/spinlock.h>
31 #include <kernel/thread.h>
32 #include <mm/core_mmu.h>
34 const char trace_ext_prefix[] = "TEE-CORE";
35 int trace_level = TRACE_LEVEL;
36 static unsigned int puts_lock = SPINLOCK_UNLOCK;
38 void trace_ext_puts(const char *str)
40 uint32_t itr_status = thread_mask_exceptions(THREAD_EXCP_ALL);
41 bool mmu_enabled = cpu_mmu_enabled();
42 bool was_contended = false;
45 if (mmu_enabled && !cpu_spin_trylock(&puts_lock)) {
47 cpu_spin_lock(&puts_lock);
55 for (p = str; *p; p++)
61 cpu_spin_unlock(&puts_lock);
63 thread_unmask_exceptions(itr_status);
66 int trace_ext_get_thread_id(void)
68 return thread_get_id_may_fail();