/*
* Copyright (c) 2008 Jiri Svoboda
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/** @addtogroup libc
* @{
*/
/** @file
* @brief Program Control Block interface.
*/
#ifndef _LIBC_PCB_H_
#define _LIBC_PCB_H_
#include <tls.h>
typedef void (*entry_point_t)(void);
struct pcb_inbox_entry {
char *name;
int file;
};
/** Program Control Block.
*
* Holds pointers to data passed from the program loader to the program
* and/or to the dynamic linker. This includes the program entry point,
* arguments, environment variables etc.
*
*/
typedef struct {
/** Program entry point. */
entry_point_t entry;
/** Current working directory. */
char *cwd;
/** Number of command-line arguments. */
int argc;
/** Command-line arguments. */
char **argv;
/** List of inbox files. */
struct pcb_inbox_entry *inbox;
int inbox_entries;
/*
* ELF-specific data.
*/
/** Pointer to ELF dynamic section of the program. */
void *dynamic;
/** Pointer to dynamic linker state structure (rtld_t). */
void *rtld_runtime;
/** Thread local storage for the main thread. */
tcb_t *tcb;
} pcb_t;
/**
* A pointer to the program control block. Having received the PCB pointer,
* the C library startup code stores it here for later use.
*/
extern pcb_t *__pcb;
#endif
/**
* @}
*/