Root/arch/s390/kernel/compat_ptrace.h

1#ifndef _PTRACE32_H
2#define _PTRACE32_H
3
4#include <asm/ptrace.h> /* needed for NUM_CR_WORDS */
5#include "compat_linux.h" /* needed for psw_compat_t */
6
7typedef struct {
8    __u32 cr[NUM_CR_WORDS];
9} per_cr_words32;
10
11typedef struct {
12    __u16 perc_atmid; /* 0x096 */
13    __u32 address; /* 0x098 */
14    __u8 access_id; /* 0x0a1 */
15} per_lowcore_words32;
16
17typedef struct {
18    union {
19        per_cr_words32 words;
20    } control_regs;
21    /*
22     * Use these flags instead of setting em_instruction_fetch
23     * directly they are used so that single stepping can be
24     * switched on & off while not affecting other tracing
25     */
26    unsigned single_step : 1;
27    unsigned instruction_fetch : 1;
28    unsigned : 30;
29    /*
30     * These addresses are copied into cr10 & cr11 if single
31     * stepping is switched off
32     */
33    __u32 starting_addr;
34    __u32 ending_addr;
35    union {
36        per_lowcore_words32 words;
37    } lowcore;
38} per_struct32;
39
40struct user_regs_struct32
41{
42    psw_compat_t psw;
43    u32 gprs[NUM_GPRS];
44    u32 acrs[NUM_ACRS];
45    u32 orig_gpr2;
46    /* nb: there's a 4-byte hole here */
47    s390_fp_regs fp_regs;
48    /*
49     * These per registers are in here so that gdb can modify them
50     * itself as there is no "official" ptrace interface for hardware
51     * watchpoints. This is the way intel does it.
52     */
53    per_struct32 per_info;
54    u32 ieee_instruction_pointer; /* obsolete, always 0 */
55};
56
57struct user32 {
58    /* We start with the registers, to mimic the way that "memory"
59       is returned from the ptrace(3,...) function. */
60    struct user_regs_struct32 regs; /* Where the registers are actually stored */
61    /* The rest of this junk is to help gdb figure out what goes where */
62    u32 u_tsize; /* Text segment size (pages). */
63    u32 u_dsize; /* Data segment size (pages). */
64    u32 u_ssize; /* Stack segment size (pages). */
65    u32 start_code; /* Starting virtual address of text. */
66    u32 start_stack; /* Starting virtual address of stack area.
67                   This is actually the bottom of the stack,
68                   the top of the stack is always found in the
69                   esp register. */
70    s32 signal; /* Signal that caused the core dump. */
71    u32 u_ar0; /* Used by gdb to help find the values for */
72                             /* the registers. */
73    u32 magic; /* To uniquely identify a core file */
74    char u_comm[32]; /* User command that was responsible */
75};
76
77typedef struct
78{
79    __u32 len;
80    __u32 kernel_addr;
81    __u32 process_addr;
82} ptrace_area_emu31;
83
84#endif /* _PTRACE32_H */
85

Archive Download this file



interactive