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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [asm-ia64/] [user.h] - Blame information for rev 1275

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1 1275 phoenix
#ifndef _ASM_IA64_USER_H
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#define _ASM_IA64_USER_H
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/*
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 * Core file format: The core file is written in such a way that gdb
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 * can understand it and provide useful information to the user (under
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 * linux we use the `trad-core' bfd).  The file contents are as
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 * follows:
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 *
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 *  upage: 1 page consisting of a user struct that tells gdb
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 *      what is present in the file.  Directly after this is a
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 *      copy of the task_struct, which is currently not used by gdb,
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 *      but it may come in handy at some point.  All of the registers
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 *      are stored as part of the upage.  The upage should always be
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 *      only one page long.
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 *  data: The data segment follows next.  We use current->end_text to
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 *      current->brk to pick up all of the user variables, plus any memory
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 *      that may have been sbrk'ed.  No attempt is made to determine if a
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 *      page is demand-zero or if a page is totally unused, we just cover
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 *      the entire range.  All of the addresses are rounded in such a way
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 *      that an integral number of pages is written.
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 *  stack: We need the stack information in order to get a meaningful
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 *      backtrace.  We need to write the data from usp to
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 *      current->start_stack, so we round each of these in order to be able
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 *      to write an integer number of pages.
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 *
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 * Modified 1998, 1999, 2001
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 *      David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co
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 */
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#include <linux/ptrace.h>
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#include <linux/types.h>
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#include <asm/page.h>
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#define EF_SIZE         3072    /* XXX fix me */
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struct user {
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        unsigned long   regs[EF_SIZE/8+32];     /* integer and fp regs */
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        size_t          u_tsize;                /* text size (pages) */
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        size_t          u_dsize;                /* data size (pages) */
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        size_t          u_ssize;                /* stack size (pages) */
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        unsigned long   start_code;             /* text starting address */
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        unsigned long   start_data;             /* data starting address */
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        unsigned long   start_stack;            /* stack starting address */
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        long int        signal;                 /* signal causing core dump */
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        struct regs *   u_ar0;                  /* help gdb find registers */
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        unsigned long   magic;                  /* identifies a core file */
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        char            u_comm[32];             /* user command name */
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};
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#define NBPG                    PAGE_SIZE
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#define UPAGES                  1
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#define HOST_TEXT_START_ADDR    (u.start_code)
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#define HOST_DATA_START_ADDR    (u.start_data)
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#define HOST_STACK_END_ADDR     (u.start_stack + u.u_ssize * NBPG)
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#endif /* _ASM_IA64_USER_H */

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