Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 | 2 | * S390 version |
a53c8fab | 3 | * Copyright IBM Corp. 1999, 2000 |
1da177e4 LT |
4 | * Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) |
5 | */ | |
1da177e4 LT |
6 | #ifndef _S390_PTRACE_H |
7 | #define _S390_PTRACE_H | |
8 | ||
9807f759 | 9 | #include <uapi/asm/ptrace.h> |
1da177e4 LT |
10 | |
11 | #ifndef __ASSEMBLY__ | |
63dd9b44 | 12 | |
e258d719 MS |
13 | #define PSW_KERNEL_BITS (PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_ASC_HOME | \ |
14 | PSW_MASK_EA | PSW_MASK_BA) | |
15 | #define PSW_USER_BITS (PSW_MASK_DAT | PSW_MASK_IO | PSW_MASK_EXT | \ | |
16 | PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_MCHECK | \ | |
17 | PSW_MASK_PSTATE | PSW_ASC_PRIMARY) | |
274f5946 | 18 | |
1da177e4 LT |
19 | /* |
20 | * The pt_regs struct defines the way the registers are stored on | |
21 | * the stack during a system call. | |
22 | */ | |
23 | struct pt_regs | |
24 | { | |
25 | unsigned long args[1]; | |
26 | psw_t psw; | |
27 | unsigned long gprs[NUM_GPRS]; | |
28 | unsigned long orig_gpr2; | |
aa33c8cb | 29 | unsigned int int_code; |
48f6b00c | 30 | unsigned int int_parm; |
aa33c8cb | 31 | unsigned long int_parm_long; |
1da177e4 | 32 | }; |
5e9a2692 MS |
33 | |
34 | /* | |
35 | * Program event recording (PER) register set. | |
36 | */ | |
37 | struct per_regs { | |
38 | unsigned long control; /* PER control bits */ | |
39 | unsigned long start; /* PER starting address */ | |
40 | unsigned long end; /* PER ending address */ | |
41 | }; | |
42 | ||
43 | /* | |
44 | * PER event contains information about the cause of the last PER exception. | |
45 | */ | |
46 | struct per_event { | |
47 | unsigned short cause; /* PER code, ATMID and AI */ | |
48 | unsigned long address; /* PER address */ | |
49 | unsigned char paid; /* PER access identification */ | |
50 | }; | |
51 | ||
52 | /* | |
53 | * Simplified per_info structure used to decode the ptrace user space ABI. | |
54 | */ | |
55 | struct per_struct_kernel { | |
56 | unsigned long cr9; /* PER control bits */ | |
57 | unsigned long cr10; /* PER starting address */ | |
58 | unsigned long cr11; /* PER ending address */ | |
59 | unsigned long bits; /* Obsolete software bits */ | |
60 | unsigned long starting_addr; /* User specified start address */ | |
61 | unsigned long ending_addr; /* User specified end address */ | |
62 | unsigned short perc_atmid; /* PER trap ATMID */ | |
63 | unsigned long address; /* PER trap instruction address */ | |
64 | unsigned char access_id; /* PER trap access identification */ | |
65 | }; | |
66 | ||
d35339a4 | 67 | #define PER_EVENT_MASK 0xEB000000UL |
5e9a2692 MS |
68 | |
69 | #define PER_EVENT_BRANCH 0x80000000UL | |
70 | #define PER_EVENT_IFETCH 0x40000000UL | |
71 | #define PER_EVENT_STORE 0x20000000UL | |
72 | #define PER_EVENT_STORE_REAL 0x08000000UL | |
d35339a4 | 73 | #define PER_EVENT_TRANSACTION_END 0x02000000UL |
5e9a2692 MS |
74 | #define PER_EVENT_NULLIFICATION 0x01000000UL |
75 | ||
d35339a4 | 76 | #define PER_CONTROL_MASK 0x00e00000UL |
5e9a2692 MS |
77 | |
78 | #define PER_CONTROL_BRANCH_ADDRESS 0x00800000UL | |
d35339a4 | 79 | #define PER_CONTROL_SUSPENSION 0x00400000UL |
5e9a2692 MS |
80 | #define PER_CONTROL_ALTERATION 0x00200000UL |
81 | ||
0ac30be4 RM |
82 | /* |
83 | * These are defined as per linux/ptrace.h, which see. | |
84 | */ | |
85 | #define arch_has_single_step() (1) | |
818a330c | 86 | #define arch_has_block_step() (1) |
0ac30be4 | 87 | |
1da177e4 LT |
88 | #define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0) |
89 | #define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN) | |
753c4dd6 | 90 | #define user_stack_pointer(regs)((regs)->gprs[15]) |
1da177e4 | 91 | #define profile_pc(regs) instruction_pointer(regs) |
952974ac | 92 | |
d7e7528b EP |
93 | static inline long regs_return_value(struct pt_regs *regs) |
94 | { | |
95 | return regs->gprs[2]; | |
96 | } | |
97 | ||
952974ac HC |
98 | int regs_query_register_offset(const char *name); |
99 | const char *regs_query_register_name(unsigned int offset); | |
100 | unsigned long regs_get_register(struct pt_regs *regs, unsigned int offset); | |
101 | unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n); | |
102 | ||
103 | static inline unsigned long kernel_stack_pointer(struct pt_regs *regs) | |
104 | { | |
105 | return regs->gprs[15] & PSW_ADDR_INSN; | |
106 | } | |
107 | ||
1da177e4 | 108 | #endif /* __ASSEMBLY__ */ |
1da177e4 | 109 | #endif /* _S390_PTRACE_H */ |