1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_IA64_USER_H
3 #define _ASM_IA64_USER_H
4
5 /*
6 * Core file format: The core file is written in such a way that gdb
7 * can understand it and provide useful information to the user (under
8 * linux we use the `trad-core' bfd). The file contents are as
9 * follows:
10 *
11 * upage: 1 page consisting of a user struct that tells gdb
12 * what is present in the file. Directly after this is a
13 * copy of the task_struct, which is currently not used by gdb,
14 * but it may come in handy at some point. All of the registers
15 * are stored as part of the upage. The upage should always be
16 * only one page long.
17 * data: The data segment follows next. We use current->end_text to
18 * current->brk to pick up all of the user variables, plus any memory
19 * that may have been sbrk'ed. No attempt is made to determine if a
20 * page is demand-zero or if a page is totally unused, we just cover
21 * the entire range. All of the addresses are rounded in such a way
22 * that an integral number of pages is written.
23 * stack: We need the stack information in order to get a meaningful
24 * backtrace. We need to write the data from usp to
25 * current->start_stack, so we round each of these in order to be able
26 * to write an integer number of pages.
27 *
28 * Modified 1998, 1999, 2001
29 * David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co
30 */
31
32 #include <linux/ptrace.h>
33 #include <linux/types.h>
34
35 #include <asm/page.h>
36
37 #define EF_SIZE 3072 /* XXX fix me */
38
39 struct user {
40 unsigned long regs[EF_SIZE/8+32]; /* integer and fp regs */
41 size_t u_tsize; /* text size (pages) */
42 size_t u_dsize; /* data size (pages) */
43 size_t u_ssize; /* stack size (pages) */
44 unsigned long start_code; /* text starting address */
45 unsigned long start_data; /* data starting address */
46 unsigned long start_stack; /* stack starting address */
47 long int signal; /* signal causing core dump */
48 unsigned long u_ar0; /* help gdb find registers */
49 unsigned long magic; /* identifies a core file */
50 char u_comm[32]; /* user command name */
51 };
52
53 #define NBPG PAGE_SIZE
54 #define UPAGES 1
55 #define HOST_TEXT_START_ADDR (u.start_code)
56 #define HOST_DATA_START_ADDR (u.start_data)
57 #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
58
59 #endif /* _ASM_IA64_USER_H */