From d8ee4cfaf8afacfe8ff455900ed391af4f642888 Mon Sep 17 00:00:00 2001 From: patacongo Date: Wed, 17 Jun 2009 20:25:27 +0000 Subject: Add exec_module git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1895 42af7a65-404d-4744-a932-0658087f49c3 --- nuttx/binfmt/binfmt_execmodule.c | 184 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 184 insertions(+) create mode 100644 nuttx/binfmt/binfmt_execmodule.c (limited to 'nuttx/binfmt/binfmt_execmodule.c') diff --git a/nuttx/binfmt/binfmt_execmodule.c b/nuttx/binfmt/binfmt_execmodule.c new file mode 100644 index 000000000..21c1bf6ac --- /dev/null +++ b/nuttx/binfmt/binfmt_execmodule.c @@ -0,0 +1,184 @@ +/**************************************************************************** + * binfmt/binfmt_execmodule.c + * + * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * 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 +#include + +#include +#include +#include +#include + +#include +#include + +#include "os_internal.h" +#include "binfmt_internal.h" + +/**************************************************************************** + * 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 *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*)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; + dbg("task_init() failed: %d\n", err); + goto errout_with_stack; + } + + /* Add the DSpace address as the PIC base address */ + + tcb->picbase = bin->dspace; + + /* Re-initialize the task's initial state to account for the new PIC base */ + + up_initial_state(tcb); + + /* 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; + dbg("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; + dbg("returning errno: %d\n", err); + return ERROR; +} + + -- cgit v1.2.3