3 * Copyright IBM Corp. 1999, 2000
9 #include <uapi/asm/ptrace.h>
14 #endif /* __s390x__ */
15 extern long psw_kernel_bits;
16 extern long psw_user_bits;
19 * The pt_regs struct defines the way the registers are stored on
20 * the stack during a system call.
24 unsigned long args[1];
26 unsigned long gprs[NUM_GPRS];
27 unsigned long orig_gpr2;
28 unsigned int int_code;
29 unsigned long int_parm_long;
33 * Program event recording (PER) register set.
36 unsigned long control; /* PER control bits */
37 unsigned long start; /* PER starting address */
38 unsigned long end; /* PER ending address */
42 * PER event contains information about the cause of the last PER exception.
45 unsigned short cause; /* PER code, ATMID and AI */
46 unsigned long address; /* PER address */
47 unsigned char paid; /* PER access identification */
51 * Simplified per_info structure used to decode the ptrace user space ABI.
53 struct per_struct_kernel {
54 unsigned long cr9; /* PER control bits */
55 unsigned long cr10; /* PER starting address */
56 unsigned long cr11; /* PER ending address */
57 unsigned long bits; /* Obsolete software bits */
58 unsigned long starting_addr; /* User specified start address */
59 unsigned long ending_addr; /* User specified end address */
60 unsigned short perc_atmid; /* PER trap ATMID */
61 unsigned long address; /* PER trap instruction address */
62 unsigned char access_id; /* PER trap access identification */
65 #define PER_EVENT_MASK 0xEB000000UL
67 #define PER_EVENT_BRANCH 0x80000000UL
68 #define PER_EVENT_IFETCH 0x40000000UL
69 #define PER_EVENT_STORE 0x20000000UL
70 #define PER_EVENT_STORE_REAL 0x08000000UL
71 #define PER_EVENT_TRANSACTION_END 0x02000000UL
72 #define PER_EVENT_NULLIFICATION 0x01000000UL
74 #define PER_CONTROL_MASK 0x00e00000UL
76 #define PER_CONTROL_BRANCH_ADDRESS 0x00800000UL
77 #define PER_CONTROL_SUSPENSION 0x00400000UL
78 #define PER_CONTROL_ALTERATION 0x00200000UL
81 #endif /* __s390x__ */
83 * These are defined as per linux/ptrace.h, which see.
85 #define arch_has_single_step() (1)
87 #define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
88 #define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN)
89 #define user_stack_pointer(regs)((regs)->gprs[15])
90 #define profile_pc(regs) instruction_pointer(regs)
92 static inline long regs_return_value(struct pt_regs *regs)
97 int regs_query_register_offset(const char *name);
98 const char *regs_query_register_name(unsigned int offset);
99 unsigned long regs_get_register(struct pt_regs *regs, unsigned int offset);
100 unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n);
102 static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
104 return regs->gprs[15] & PSW_ADDR_INSN;
107 #endif /* __ASSEMBLY__ */
108 #endif /* _S390_PTRACE_H */