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/*
* Copyright (c) 2014, Linaro Limited
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 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 HOLDER 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 <stdbool.h>
#include <trace.h>
#include <console.h>
#include <kernel/spinlock.h>
#include <kernel/thread.h>
#include <mm/core_mmu.h>
const char trace_ext_prefix[] = "TEE-CORE";
int trace_level = TRACE_LEVEL;
static unsigned int puts_lock = SPINLOCK_UNLOCK;
void trace_ext_puts(const char *str)
{
uint32_t itr_status = thread_mask_exceptions(THREAD_EXCP_ALL);
bool mmu_enabled = cpu_mmu_enabled();
bool was_contended = false;
const char *p;
if (mmu_enabled && !cpu_spin_trylock(&puts_lock)) {
was_contended = true;
cpu_spin_lock(&puts_lock);
}
console_flush();
if (was_contended)
console_putc('*');
for (p = str; *p; p++)
console_putc(*p);
console_flush();
if (mmu_enabled)
cpu_spin_unlock(&puts_lock);
thread_unmask_exceptions(itr_status);
}
int trace_ext_get_thread_id(void)
{
return thread_get_id_may_fail();
}
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