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7#ifndef _S390_PTRACE_H
8#define _S390_PTRACE_H
9
10#include <linux/const.h>
11#include <uapi/asm/ptrace.h>
12
13#define PIF_SYSCALL 0
14#define PIF_PER_TRAP 1
15#define PIF_SYSCALL_RESTART 2
16#define PIF_GUEST_FAULT 3
17
18#define _PIF_SYSCALL _BITUL(PIF_SYSCALL)
19#define _PIF_PER_TRAP _BITUL(PIF_PER_TRAP)
20#define _PIF_SYSCALL_RESTART _BITUL(PIF_SYSCALL_RESTART)
21#define _PIF_GUEST_FAULT _BITUL(PIF_GUEST_FAULT)
22
23#ifndef __ASSEMBLY__
24
25#define PSW_KERNEL_BITS (PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_ASC_HOME | \
26 PSW_MASK_EA | PSW_MASK_BA)
27#define PSW_USER_BITS (PSW_MASK_DAT | PSW_MASK_IO | PSW_MASK_EXT | \
28 PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_MCHECK | \
29 PSW_MASK_PSTATE | PSW_ASC_PRIMARY)
30
31struct psw_bits {
32 unsigned long : 1;
33 unsigned long per : 1;
34 unsigned long : 3;
35 unsigned long dat : 1;
36 unsigned long io : 1;
37 unsigned long ext : 1;
38 unsigned long key : 4;
39 unsigned long : 1;
40 unsigned long mcheck : 1;
41 unsigned long wait : 1;
42 unsigned long pstate : 1;
43 unsigned long as : 2;
44 unsigned long cc : 2;
45 unsigned long pm : 4;
46 unsigned long ri : 1;
47 unsigned long : 6;
48 unsigned long eaba : 2;
49 unsigned long : 31;
50 unsigned long ia : 64;
51};
52
53enum {
54 PSW_BITS_AMODE_24BIT = 0,
55 PSW_BITS_AMODE_31BIT = 1,
56 PSW_BITS_AMODE_64BIT = 3
57};
58
59enum {
60 PSW_BITS_AS_PRIMARY = 0,
61 PSW_BITS_AS_ACCREG = 1,
62 PSW_BITS_AS_SECONDARY = 2,
63 PSW_BITS_AS_HOME = 3
64};
65
66#define psw_bits(__psw) (*({ \
67 typecheck(psw_t, __psw); \
68 &(*(struct psw_bits *)(&(__psw))); \
69}))
70
71
72
73
74
75struct pt_regs
76{
77 union {
78 user_pt_regs user_regs;
79 struct {
80 unsigned long args[1];
81 psw_t psw;
82 unsigned long gprs[NUM_GPRS];
83 };
84 };
85 unsigned long orig_gpr2;
86 unsigned int int_code;
87 unsigned int int_parm;
88 unsigned long int_parm_long;
89 unsigned long flags;
90};
91
92
93
94
95struct per_regs {
96 unsigned long control;
97 unsigned long start;
98 unsigned long end;
99};
100
101
102
103
104struct per_event {
105 unsigned short cause;
106 unsigned long address;
107 unsigned char paid;
108};
109
110
111
112
113struct per_struct_kernel {
114 unsigned long cr9;
115 unsigned long cr10;
116 unsigned long cr11;
117 unsigned long bits;
118 unsigned long starting_addr;
119 unsigned long ending_addr;
120 unsigned short perc_atmid;
121 unsigned long address;
122 unsigned char access_id;
123};
124
125#define PER_EVENT_MASK 0xEB000000UL
126
127#define PER_EVENT_BRANCH 0x80000000UL
128#define PER_EVENT_IFETCH 0x40000000UL
129#define PER_EVENT_STORE 0x20000000UL
130#define PER_EVENT_STORE_REAL 0x08000000UL
131#define PER_EVENT_TRANSACTION_END 0x02000000UL
132#define PER_EVENT_NULLIFICATION 0x01000000UL
133
134#define PER_CONTROL_MASK 0x00e00000UL
135
136#define PER_CONTROL_BRANCH_ADDRESS 0x00800000UL
137#define PER_CONTROL_SUSPENSION 0x00400000UL
138#define PER_CONTROL_ALTERATION 0x00200000UL
139
140static inline void set_pt_regs_flag(struct pt_regs *regs, int flag)
141{
142 regs->flags |= (1UL << flag);
143}
144
145static inline void clear_pt_regs_flag(struct pt_regs *regs, int flag)
146{
147 regs->flags &= ~(1UL << flag);
148}
149
150static inline int test_pt_regs_flag(struct pt_regs *regs, int flag)
151{
152 return !!(regs->flags & (1UL << flag));
153}
154
155
156
157
158#define arch_has_single_step() (1)
159#define arch_has_block_step() (1)
160
161#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
162#define instruction_pointer(regs) ((regs)->psw.addr)
163#define user_stack_pointer(regs)((regs)->gprs[15])
164#define profile_pc(regs) instruction_pointer(regs)
165
166static inline long regs_return_value(struct pt_regs *regs)
167{
168 return regs->gprs[2];
169}
170
171static inline void instruction_pointer_set(struct pt_regs *regs,
172 unsigned long val)
173{
174 regs->psw.addr = val;
175}
176
177int regs_query_register_offset(const char *name);
178const char *regs_query_register_name(unsigned int offset);
179unsigned long regs_get_register(struct pt_regs *regs, unsigned int offset);
180unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n);
181
182static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
183{
184 return regs->gprs[15];
185}
186
187#endif
188#endif
189