isr_register.c
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/*
* Copyright (c) 2017, Cobham Gaisler AB
* 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 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 <stdlib.h>
#include "bcc/bcc.h"
#include "isr_priv.h"
void *bcc_isr_register(
int source,
void (*handler)(
void *arg,
int source
),
void *arg
)
{
if (source < 1) { return NULL; }
if (ISR_NSOURCES <= source) { return NULL; }
if (NULL == handler) { return NULL; }
DBG(
"source=%d, handler=%p, arg=%p\n",
source,
(void *) (uintptr_t) handler,
arg
);
struct bcc_isr_node *node;
int ret;
node = malloc(sizeof *node);
if (NULL == node) {
return NULL;
}
DBG("node=%p\n", (void *) node);
node->source = source;
node->handler = handler;
node->arg = arg;
ret = bcc_isr_register_node(node);
if (BCC_OK != ret) {
free(node);
return NULL;
}
return node;
}