sysdeps/unix/sysv/linux/alpha/sys/user.h

   1 /* Copyright (C) 1999-2019 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library.  If not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef _SYS_USER_H
  19 #define _SYS_USER_H     1
  20
  21 /* The whole purpose of this file is for gdb/strace and gdb/strace
  22    only. Don't read too much into it. Don't use it for anything other
  23    than gdb/strace unless you know what you are doing. */
  24
  25 #include <asm/reg.h>
  26 #include <stddef.h>
  27
  28 struct user
  29 {
  30   unsigned long int regs[EF_SIZE / 8 + 32];     /* integer and fp regs */
  31   size_t u_tsize;                               /* text size (pages) */
  32   size_t u_dsize;                               /* data size (pages) */
  33   size_t u_ssize;                               /* stack size (pages) */
  34   unsigned long int start_code;                 /* text starting address */
  35   unsigned long int start_data;                 /* data starting address */
  36   unsigned long int start_stack;                /* stack starting address */
  37   long int signal;                              /* signal causing core dump */
  38   struct regs *u_ar0;                           /* help gdb find registers */
  39   unsigned long int magic;                      /* identifies a core file */
  40   char u_comm[32];                              /* user command name */
  41 };
  42
  43 #define PAGE_SHIFT              13
  44 #define PAGE_SIZE               (1UL << PAGE_SHIFT)
  45 #define PAGE_MASK               (~(PAGE_SIZE-1))
  46 #define NBPG                    PAGE_SIZE
  47 #define UPAGES                  1
  48 #define HOST_TEXT_START_ADDR    (u.start_code)
  49 #define HOST_DATA_START_ADDR    (u.start_data)
  50 #define HOST_STACK_END_ADDR     (u.start_stack + u.u_ssize * NBPG)
  51
  52 #endif  /* sys/user.h */