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/****************************************************************************
* binfmt/binfmt_execmodule.c
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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.
* 3. Neither the name NuttX 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdlib.h>
#include <sched.h>
#include <debug.h>
#include <errno.h>
#include <nuttx/arch.h>
#include <nuttx/binfmt.h>
#include "os_internal.h"
#include "binfmt_internal.h"
#ifndef CONFIG_BINFMT_DISABLE
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: exec_module
*
* Description:
* Execute a module that has been loaded into memory by load_module().
*
* Returned Value:
* This is an end-user function, so it follows the normal convention:
* Returns the PID of the exec'ed module. On failure, it.returns
* -1 (ERROR) and sets errno appropriately.
*
****************************************************************************/
int exec_module(FAR const struct binary_s *bin, int priority)
{
FAR _TCB *tcb;
#ifndef CONFIG_CUSTOM_STACK
FAR uint32_t *stack;
#endif
pid_t pid;
int err;
int ret;
/* Sanity checking */
#ifdef CONFIG_DEBUG
if (!bin || !bin->ispace || !bin->entrypt || bin->stacksize <= 0)
{
err = EINVAL;
goto errout;
}
#endif
bdbg("Executing %s\n", bin->filename);
/* Allocate a TCB for the new task. */
tcb = (FAR _TCB*)zalloc(sizeof(_TCB));
if (!tcb)
{
err = ENOMEM;
goto errout;
}
/* Allocate the stack for the new task */
#ifndef CONFIG_CUSTOM_STACK
stack = (FAR uint32_t*)malloc(bin->stacksize);
if (!tcb)
{
err = ENOMEM;
goto errout_with_tcb;
}
/* Initialize the task */
ret = task_init(tcb, bin->filename, priority, stack, bin->stacksize, bin->entrypt, bin->argv);
#else
/* Initialize the task */
ret = task_init(tcb, bin->filename, priority, stack, bin->entrypt, bin->argv);
#endif
if (ret < 0)
{
err = errno;
bdbg("task_init() failed: %d\n", err);
goto errout_with_stack;
}
/* Add the DSpace address as the PIC base address */
#ifdef CONFIG_PIC
tcb->dspace = bin->dspace;
/* Re-initialize the task's initial state to account for the new PIC base */
up_initial_state(tcb);
#endif
/* Get the assigned pid before we start the task */
pid = tcb->pid;
/* Then activate the task at the provided priority */
ret = task_activate(tcb);
if (ret < 0)
{
err = errno;
bdbg("task_activate() failed: %d\n", err);
goto errout_with_stack;
}
return (int)pid;
errout_with_stack:
#ifndef CONFIG_CUSTOM_STACK
tcb->stack_alloc_ptr = NULL;
sched_releasetcb(tcb);
free(stack);
#else
sched_releasetcb(tcb);
#endif
goto errout;
errout_with_tcb:
free(tcb);
errout:
errno = err;
bdbg("returning errno: %d\n", err);
return ERROR;
}
#endif /* CONFIG_BINFMT_DISABLE */
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