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jdl@freescale.comdd56fdf2005-09-07 15:59:48 -05001#ifndef _ASM_POWERPC_USER_H
2#define _ASM_POWERPC_USER_H
3
jdl@freescale.comdd56fdf2005-09-07 15:59:48 -05004#include <asm/ptrace.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07005#include <asm/page.h>
6
7/*
jdl@freescale.comdd56fdf2005-09-07 15:59:48 -05008 * Adapted from <asm-alpha/user.h>
9 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070010 * Core file format: The core file is written in such a way that gdb
11 * can understand it and provide useful information to the user (under
12 * linux we use the `trad-core' bfd, NOT the osf-core). The file contents
13 * are as follows:
14 *
15 * upage: 1 page consisting of a user struct that tells gdb
16 * what is present in the file. Directly after this is a
17 * copy of the task_struct, which is currently not used by gdb,
18 * but it may come in handy at some point. All of the registers
19 * are stored as part of the upage. The upage should always be
20 * only one page long.
21 * data: The data segment follows next. We use current->end_text to
22 * current->brk to pick up all of the user variables, plus any memory
23 * that may have been sbrk'ed. No attempt is made to determine if a
24 * page is demand-zero or if a page is totally unused, we just cover
25 * the entire range. All of the addresses are rounded in such a way
26 * that an integral number of pages is written.
27 * stack: We need the stack information in order to get a meaningful
28 * backtrace. We need to write the data from usp to
29 * current->start_stack, so we round each of these in order to be able
30 * to write an integer number of pages.
31 */
32struct user {
33 struct pt_regs regs; /* entire machine state */
34 size_t u_tsize; /* text size (pages) */
35 size_t u_dsize; /* data size (pages) */
36 size_t u_ssize; /* stack size (pages) */
37 unsigned long start_code; /* text starting address */
38 unsigned long start_data; /* data starting address */
39 unsigned long start_stack; /* stack starting address */
40 long int signal; /* signal causing core dump */
H. Peter Anvin6e16d892008-02-07 00:15:57 -080041 unsigned long u_ar0; /* help gdb find registers */
Linus Torvalds1da177e2005-04-16 15:20:36 -070042 unsigned long magic; /* identifies a core file */
43 char u_comm[32]; /* user command name */
44};
45
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)
jdl@freescale.comdd56fdf2005-09-07 15:59:48 -050051#endif /* _ASM_POWERPC_USER_H */