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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _ASM_M32R_USER_H
2#define _ASM_M32R_USER_H
3
Linus Torvalds1da177e2005-04-16 15:20:36 -07004#include <linux/types.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07005#include <asm/ptrace.h>
6#include <asm/page.h>
7
8/*
9 * Core file format: The core file is written in such a way that gdb
10 * can understand it and provide useful information to the user (under
11 * linux we use the `trad-core' bfd).
12 *
13 * The actual file contents are as follows:
14 * UPAGE: 1 page consisting of a user struct that tells gdb
15 * what is present in the file. Directly after this is a
16 * copy of the task_struct, which is currently not used by gdb,
17 * but it may come in handy at some point. All of the registers
18 * are stored as part of the upage. The upage should always be
19 * only one page.
20 * DATA: The data area is stored. We use current->end_text to
21 * current->brk to pick up all of the user variables, plus any memory
22 * that may have been sbrk'ed. No attempt is made to determine if a
23 * page is demand-zero or if a page is totally unused, we just cover
24 * the entire range. All of the addresses are rounded in such a way
25 * that an integral number of pages is written.
26 * STACK: We need the stack information in order to get a meaningful
27 * backtrace. We need to write the data from usp to
28 * current->start_stack, so we round each of these off in order to be
29 * able to write an integer number of pages.
30 */
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 */
41 struct regs * u_ar0; /* help gdb find registers */
42 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)
51
52#endif /* _ASM_M32R_USER_H */