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glibc  2.9
user.h
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00001 /* Copyright (C) 2000,2008 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #ifndef _SYS_USER_H
00020 #define _SYS_USER_H  1
00021 
00022 /* The whole purpose of this file is for GDB and GDB only.  Don't read
00023    too much into it.  Don't use it for anything other than GDB unless
00024    you know what you are doing.  */
00025 
00026 struct _user_psw_struct
00027 {
00028   unsigned long mask;
00029   unsigned long addr;
00030 };
00031 
00032 struct _user_fpregs_struct
00033 {
00034   unsigned int fpc;
00035   double fprs[16];
00036 };
00037 
00038 struct _user_per_struct
00039 {
00040   unsigned long control_regs[3];
00041   unsigned single_step       : 1;
00042   unsigned instruction_fetch : 1;
00043   unsigned                   : 30;
00044   unsigned long starting_addr;
00045   unsigned long ending_addr;
00046   unsigned short perc_atmid;
00047   unsigned long address;
00048   unsigned char access_id;
00049 };
00050 
00051 struct _user_regs_struct
00052 {
00053   struct _user_psw_struct psw;            /* Program status word.  */
00054   unsigned long gprs[16];          /* General purpose registers.  */
00055   unsigned int  acrs[16];          /* Access registers.  */
00056   unsigned long orig_gpr2;         /* Original gpr2.  */
00057   struct _user_fpregs_struct fp_regs;     /* Floating point registers.  */
00058   struct _user_per_struct per_info;       /* Hardware tracing registers.  */
00059   unsigned long ieee_instruction_pointer; /* Always 0.  */
00060 };
00061 
00062 struct user {
00063   struct _user_regs_struct regs;   /* User registers.  */
00064   unsigned long int u_tsize;              /* Text segment size (pages).  */
00065   unsigned long int u_dsize;              /* Data segment size (pages).  */
00066   unsigned long int u_ssize;              /* Stack segment size (pages).  */
00067   unsigned long start_code;        /* Starting address of text.  */
00068   unsigned long start_stack;              /* Starting address of stack area.  */
00069   long int signal;                 /* Signal causing the core dump.  */
00070   struct _user_regs_struct *u_ar0; /* Help gdb find registers.  */
00071   unsigned long magic;                    /* Identifies a core file.  */
00072   char u_comm[32];                 /* User command naem.  */
00073 };
00074 
00075 #define PAGE_SHIFT          12
00076 #define PAGE_SIZE           (1UL << PAGE_SHIFT)
00077 #define PAGE_MASK           (~(PAGE_SIZE-1))
00078 #define NBPG                PAGE_SIZE
00079 #define UPAGES                     1
00080 #define HOST_TEXT_START_ADDR       (u.start_code)
00081 #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
00082 
00083 #endif /* _SYS_USER_H */