Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/*

 * BK Id: SCCS/s.user.h 1.5 05/17/01 18:14:26 cort

 */

#ifdef __KERNEL__

#ifndef _OR32_USER_H

#define _OR32_USER_H

/* Adapted from <asm-alpha/user.h> */

#include <linux/ptrace.h>

#include <asm/page.h>

/*

 * Core file format: The core file is written in such a way that gdb

 * can understand it and provide useful information to the user (under

 * linux we use the `trad-core' bfd, NOT the osf-core).  The file contents

 * are as follows:

 *

 *  upage: 1 page consisting of a user struct that tells gdb

 *      what is present in the file.  Directly after this is a

 *      copy of the task_struct, which is currently not used by gdb,

 *      but it may come in handy at some point.  All of the registers

 *      are stored as part of the upage.  The upage should always be

 *      only one page long.

 *  data: The data segment follows next.  We use current->end_text to

 *      current->brk to pick up all of the user variables, plus any memory

 *      that may have been sbrk'ed.  No attempt is made to determine if a

 *      page is demand-zero or if a page is totally unused, we just cover

 *      the entire range.  All of the addresses are rounded in such a way

 *      that an integral number of pages is written.

 *  stack: We need the stack information in order to get a meaningful

 *      backtrace.  We need to write the data from usp to

 *      current->start_stack, so we round each of these in order to be able

 *      to write an integer number of pages.

 */

struct user {

        struct pt_regs  regs;                   /* entire machine state */

        size_t          u_tsize;                /* text size (pages) */

        size_t          u_dsize;                /* data size (pages) */

        size_t          u_ssize;                /* stack size (pages) */

        unsigned long   start_code;             /* text starting address */

        unsigned long   start_data;             /* data starting address */

        unsigned long   start_stack;            /* stack starting address */

        long int        signal;                 /* signal causing core dump */

        struct regs *   u_ar0;                  /* help gdb find registers */

        unsigned long   magic;                  /* identifies a core file */

        char            u_comm[32];             /* user command name */

};

#define NBPG                    PAGE_SIZE

#define UPAGES                  1

#define HOST_TEXT_START_ADDR    (u.start_code)

#define HOST_DATA_START_ADDR    (u.start_data)

#define HOST_STACK_END_ADDR     (u.start_stack + u.u_ssize * NBPG)

#endif /* _OR32_USER_H */

#endif /* __KERNEL__ */