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[mirror_ubuntu-bionic-kernel.git] / arch / s390 / kernel / compat_ptrace.h
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1#ifndef _PTRACE32_H
2#define _PTRACE32_H
3
63506c41 4#include "compat_linux.h" /* needed for psw_compat_t */
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5
6typedef struct {
7 __u32 cr[3];
8} per_cr_words32;
9
10typedef struct {
11 __u16 perc_atmid; /* 0x096 */
12 __u32 address; /* 0x098 */
13 __u8 access_id; /* 0x0a1 */
14} per_lowcore_words32;
15
16typedef struct {
17 union {
18 per_cr_words32 words;
19 } control_regs;
20 /*
21 * Use these flags instead of setting em_instruction_fetch
22 * directly they are used so that single stepping can be
23 * switched on & off while not affecting other tracing
24 */
25 unsigned single_step : 1;
26 unsigned instruction_fetch : 1;
27 unsigned : 30;
28 /*
29 * These addresses are copied into cr10 & cr11 if single
30 * stepping is switched off
31 */
32 __u32 starting_addr;
33 __u32 ending_addr;
34 union {
35 per_lowcore_words32 words;
36 } lowcore;
37} per_struct32;
38
39struct user_regs_struct32
40{
63506c41 41 psw_compat_t psw;
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42 u32 gprs[NUM_GPRS];
43 u32 acrs[NUM_ACRS];
44 u32 orig_gpr2;
45 s390_fp_regs fp_regs;
46 /*
47 * These per registers are in here so that gdb can modify them
48 * itself as there is no "official" ptrace interface for hardware
49 * watchpoints. This is the way intel does it.
50 */
51 per_struct32 per_info;
52 u32 ieee_instruction_pointer;
53 /* Used to give failing instruction back to user for ieee exceptions */
54};
55
56struct user32 {
57 /* We start with the registers, to mimic the way that "memory"
58 is returned from the ptrace(3,...) function. */
59 struct user_regs_struct32 regs; /* Where the registers are actually stored */
60 /* The rest of this junk is to help gdb figure out what goes where */
61 u32 u_tsize; /* Text segment size (pages). */
62 u32 u_dsize; /* Data segment size (pages). */
63 u32 u_ssize; /* Stack segment size (pages). */
64 u32 start_code; /* Starting virtual address of text. */
65 u32 start_stack; /* Starting virtual address of stack area.
66 This is actually the bottom of the stack,
67 the top of the stack is always found in the
68 esp register. */
69 s32 signal; /* Signal that caused the core dump. */
70 u32 u_ar0; /* Used by gdb to help find the values for */
71 /* the registers. */
72 u32 magic; /* To uniquely identify a core file */
73 char u_comm[32]; /* User command that was responsible */
74};
75
76typedef struct
77{
78 __u32 len;
79 __u32 kernel_addr;
80 __u32 process_addr;
81} ptrace_area_emu31;
82
83#endif /* _PTRACE32_H */