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/*
* Copyright (c) 2016, 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 <pta_gprof.h>
#include <string.h>
#include <tee_api.h>
#include "gprof_pta.h"
static TEE_TASessionHandle sess = TEE_HANDLE_NULL;
static TEE_Result invoke_gprof_pta(uint32_t cmd_id, uint32_t param_types,
TEE_Param params[TEE_NUM_PARAMS])
{
static const TEE_UUID core_uuid = PTA_GPROF_UUID;
TEE_Result res;
if (!sess) {
res = TEE_OpenTASession(&core_uuid, 0, 0, NULL, &sess, NULL);
if (res != TEE_SUCCESS)
return res;
}
res = TEE_InvokeTACommand(sess, 0, cmd_id, param_types, params, NULL);
return res;
}
TEE_Result __pta_gprof_send(void *buf, size_t len, uint32_t *id)
{
TEE_Param params[TEE_NUM_PARAMS];
uint32_t param_types;
TEE_Result res;
param_types = TEE_PARAM_TYPES(TEE_PARAM_TYPE_VALUE_INOUT,
TEE_PARAM_TYPE_MEMREF_INPUT,
TEE_PARAM_TYPE_NONE,
TEE_PARAM_TYPE_NONE);
memset(params, 0, sizeof(params));
params[0].value.a = *id;
params[1].memref.buffer = buf;
params[1].memref.size = len;
res = invoke_gprof_pta(PTA_GPROF_SEND, param_types, params);
if (res == TEE_SUCCESS)
*id = params[0].value.a;
return res;
}
TEE_Result __pta_gprof_pc_sampling_start(void *buf, size_t len, size_t offset,
size_t scale)
{
TEE_Param params[TEE_NUM_PARAMS];
uint32_t param_types;
param_types = TEE_PARAM_TYPES(TEE_PARAM_TYPE_MEMREF_INOUT,
TEE_PARAM_TYPE_VALUE_INPUT,
TEE_PARAM_TYPE_NONE,
TEE_PARAM_TYPE_NONE);
memset(params, 0, sizeof(params));
params[0].memref.buffer = buf;
params[0].memref.size = len;
params[1].value.a = offset;
params[1].value.b = scale;
return invoke_gprof_pta(PTA_GPROF_START_PC_SAMPLING, param_types,
params);
}
TEE_Result __pta_gprof_pc_sampling_stop(uint32_t *rate)
{
TEE_Param params[TEE_NUM_PARAMS];
uint32_t param_types;
TEE_Result res;
param_types = TEE_PARAM_TYPES(TEE_PARAM_TYPE_VALUE_OUTPUT,
TEE_PARAM_TYPE_NONE,
TEE_PARAM_TYPE_NONE,
TEE_PARAM_TYPE_NONE);
memset(params, 0, sizeof(params));
res = invoke_gprof_pta(PTA_GPROF_STOP_PC_SAMPLING, param_types,
params);
if (res != TEE_SUCCESS)
return res;
if (rate)
*rate = params[0].value.a;
return res;
}
void __pta_gprof_fini(void)
{
if (sess)
TEE_CloseTASession(sess);
}
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