1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_SH_USER_H
3 #define __ASM_SH_USER_H
4
5 #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). The file contents are as follows:
12 *
13 * upage: 1 page consisting of a user struct that tells gdb
14 * what is present in the file. Directly after this is a
15 * copy of the task_struct, which is currently not used by gdb,
16 * but it may come in handy at some point. All of the registers
17 * are stored as part of the upage. The upage should always be
18 * only one page long.
19 * data: The data segment follows next. We use current->end_text to
20 * current->brk to pick up all of the user variables, plus any memory
21 * that may have been sbrk'ed. No attempt is made to determine if a
22 * page is demand-zero or if a page is totally unused, we just cover
23 * the entire range. All of the addresses are rounded in such a way
24 * that an integral number of pages is written.
25 * stack: We need the stack information in order to get a meaningful
26 * backtrace. We need to write the data from usp to
27 * current->start_stack, so we round each of these in order to be able
28 * to write an integer number of pages.
29 */
30
31 struct user_fpu_struct {
32 unsigned long fp_regs[16];
33 unsigned long xfp_regs[16];
34 unsigned long fpscr;
35 unsigned long fpul;
36 };
37
38 struct user {
39 struct pt_regs regs; /* entire machine state */
40 struct user_fpu_struct fpu; /* Math Co-processor registers */
41 int u_fpvalid; /* True if math co-processor being used */
42 size_t u_tsize; /* text size (pages) */
43 size_t u_dsize; /* data size (pages) */
44 size_t u_ssize; /* stack size (pages) */
45 unsigned long start_code; /* text starting address */
46 unsigned long start_data; /* data starting address */
47 unsigned long start_stack; /* stack starting address */
48 long int signal; /* signal causing core dump */
49 unsigned long u_ar0; /* help gdb find registers */
50 struct user_fpu_struct* u_fpstate; /* Math Co-processor pointer */
51 unsigned long magic; /* identifies a core file */
52 char u_comm[32]; /* user command name */
53 };
54
55 #endif /* __ASM_SH_USER_H */
56
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