1 #ifndef __ASM_SH_USER_H
2 #define __ASM_SH_USER_H
3
4 #include <linux/types.h>
5 #include <asm/processor.h>
6 #include <asm/ptrace.h>
7 #include <asm/page.h>
8
9 /*
10 * 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). The file contents are as follows:
13 *
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 long.
20 * data: The data segment follows next. 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 in order to be able
29 * to write an integer number of pages.
30 */
31
32 struct user_fpu_struct {
33 unsigned long fp_regs[16];
34 unsigned long long xd_regs[8];
35 unsigned long fpscr;
36 unsigned long fpul;
37 };
38
39 struct user {
40 struct pt_regs regs; /* entire machine state */
41 struct user_fpu_struct fpu; /* Math Co-processor registers */
42 int u_fpvalid; /* True if math co-processor being used */
43 size_t u_tsize; /* text size (pages) */
44 size_t u_dsize; /* data size (pages) */
45 size_t u_ssize; /* stack size (pages) */
46 unsigned long start_code; /* text starting address */
47 unsigned long start_data; /* data starting address */
48 unsigned long start_stack; /* stack starting address */
49 long int signal; /* signal causing core dump */
50 struct regs * u_ar0; /* help gdb find registers */
51 struct user_fpu_struct* u_fpstate; /* Math Co-processor pointer */
52 unsigned long magic; /* identifies a core file */
53 char u_comm[32]; /* user command name */
54 };
55
56 #define NBPG PAGE_SIZE
57 #define UPAGES 1
58 #define HOST_TEXT_START_ADDR (u.start_code)
59 #define HOST_DATA_START_ADDR (u.start_data)
60 #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
61
62 #endif /* __ASM_SH_USER_H */
63
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