| /* |
| * This file is subject to the terms and conditions of the GNU General Public |
| * License. See the file "COPYING" in the main directory of this archive |
| * for more details. |
| * |
| * Copyright (C) 1994, 1995, 1996, 1999 by Ralf Baechle |
| */ |
| #ifndef _ASM_USER_H |
| #define _ASM_USER_H |
| |
| #include <asm/page.h> |
| #include <asm/reg.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 irix-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 { |
| unsigned long regs[EF_SIZE / /* integer and fp regs */ |
| sizeof(unsigned long) + 64]; |
| 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 */ |
| unsigned long 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 /* _ASM_USER_H */ |