[TG3]: Add tagged status support.
[linux-2.6/verdex.git] / include / asm-ppc64 / user.h
blobd7d6554a421fd08ca8d1f26bdd19e97b100caa52
1 #ifndef _PPC_USER_H
2 #define _PPC_USER_H
4 /* Adapted from <asm-alpha/user.h>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 #include <asm/ptrace.h>
13 #include <asm/page.h>
16 * Core file format: The core file is written in such a way that gdb
17 * can understand it and provide useful information to the user (under
18 * linux we use the `trad-core' bfd, NOT the osf-core). The file contents
19 * are as follows:
21 * upage: 1 page consisting of a user struct that tells gdb
22 * what is present in the file. Directly after this is a
23 * copy of the task_struct, which is currently not used by gdb,
24 * but it may come in handy at some point. All of the registers
25 * are stored as part of the upage. The upage should always be
26 * only one page long.
27 * data: The data segment follows next. We use current->end_text to
28 * current->brk to pick up all of the user variables, plus any memory
29 * that may have been sbrk'ed. No attempt is made to determine if a
30 * page is demand-zero or if a page is totally unused, we just cover
31 * the entire range. All of the addresses are rounded in such a way
32 * that an integral number of pages is written.
33 * stack: We need the stack information in order to get a meaningful
34 * backtrace. We need to write the data from usp to
35 * current->start_stack, so we round each of these in order to be able
36 * to write an integer number of pages.
38 struct user {
39 struct pt_regs regs; /* entire machine state */
40 size_t u_tsize; /* text size (pages) */
41 size_t u_dsize; /* data size (pages) */
42 size_t u_ssize; /* stack size (pages) */
43 unsigned long start_code; /* text starting address */
44 unsigned long start_data; /* data starting address */
45 unsigned long start_stack; /* stack starting address */
46 long int signal; /* signal causing core dump */
47 struct regs * u_ar0; /* help gdb find registers */
48 unsigned long magic; /* identifies a core file */
49 char u_comm[32]; /* user command name */
52 #define NBPG PAGE_SIZE
53 #define UPAGES 1
54 #define HOST_TEXT_START_ADDR (u.start_code)
55 #define HOST_DATA_START_ADDR (u.start_data)
56 #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
58 #endif /* _PPC_USER_H */