| /* |
| * S390 version |
| * Copyright IBM Corp. 1999, 2000 |
| * Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) |
| */ |
| #ifndef _S390_PTRACE_H |
| #define _S390_PTRACE_H |
| |
| #include <uapi/asm/ptrace.h> |
| |
| #ifndef __ASSEMBLY__ |
| |
| extern long psw_kernel_bits; |
| extern long psw_user_bits; |
| |
| /* |
| * The pt_regs struct defines the way the registers are stored on |
| * the stack during a system call. |
| */ |
| struct pt_regs |
| { |
| unsigned long args[1]; |
| psw_t psw; |
| unsigned long gprs[NUM_GPRS]; |
| unsigned long orig_gpr2; |
| unsigned int int_code; |
| unsigned int int_parm; |
| unsigned long int_parm_long; |
| }; |
| |
| /* |
| * Program event recording (PER) register set. |
| */ |
| struct per_regs { |
| unsigned long control; /* PER control bits */ |
| unsigned long start; /* PER starting address */ |
| unsigned long end; /* PER ending address */ |
| }; |
| |
| /* |
| * PER event contains information about the cause of the last PER exception. |
| */ |
| struct per_event { |
| unsigned short cause; /* PER code, ATMID and AI */ |
| unsigned long address; /* PER address */ |
| unsigned char paid; /* PER access identification */ |
| }; |
| |
| /* |
| * Simplified per_info structure used to decode the ptrace user space ABI. |
| */ |
| struct per_struct_kernel { |
| unsigned long cr9; /* PER control bits */ |
| unsigned long cr10; /* PER starting address */ |
| unsigned long cr11; /* PER ending address */ |
| unsigned long bits; /* Obsolete software bits */ |
| unsigned long starting_addr; /* User specified start address */ |
| unsigned long ending_addr; /* User specified end address */ |
| unsigned short perc_atmid; /* PER trap ATMID */ |
| unsigned long address; /* PER trap instruction address */ |
| unsigned char access_id; /* PER trap access identification */ |
| }; |
| |
| #define PER_EVENT_MASK 0xEB000000UL |
| |
| #define PER_EVENT_BRANCH 0x80000000UL |
| #define PER_EVENT_IFETCH 0x40000000UL |
| #define PER_EVENT_STORE 0x20000000UL |
| #define PER_EVENT_STORE_REAL 0x08000000UL |
| #define PER_EVENT_TRANSACTION_END 0x02000000UL |
| #define PER_EVENT_NULLIFICATION 0x01000000UL |
| |
| #define PER_CONTROL_MASK 0x00e00000UL |
| |
| #define PER_CONTROL_BRANCH_ADDRESS 0x00800000UL |
| #define PER_CONTROL_SUSPENSION 0x00400000UL |
| #define PER_CONTROL_ALTERATION 0x00200000UL |
| |
| /* |
| * These are defined as per linux/ptrace.h, which see. |
| */ |
| #define arch_has_single_step() (1) |
| |
| #define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0) |
| #define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN) |
| #define user_stack_pointer(regs)((regs)->gprs[15]) |
| #define profile_pc(regs) instruction_pointer(regs) |
| |
| static inline long regs_return_value(struct pt_regs *regs) |
| { |
| return regs->gprs[2]; |
| } |
| |
| int regs_query_register_offset(const char *name); |
| const char *regs_query_register_name(unsigned int offset); |
| unsigned long regs_get_register(struct pt_regs *regs, unsigned int offset); |
| unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n); |
| |
| static inline unsigned long kernel_stack_pointer(struct pt_regs *regs) |
| { |
| return regs->gprs[15] & PSW_ADDR_INSN; |
| } |
| |
| #endif /* __ASSEMBLY__ */ |
| #endif /* _S390_PTRACE_H */ |