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197 lines
5.5 KiB
197 lines
5.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* S390 version |
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* Copyright IBM Corp. 1999, 2000 |
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* Author(s): Denis Joseph Barrow ([email protected],[email protected]) |
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*/ |
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#ifndef _S390_PTRACE_H |
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#define _S390_PTRACE_H |
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#include <linux/bits.h> |
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#include <uapi/asm/ptrace.h> |
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#define PIF_SYSCALL 0 /* inside a system call */ |
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#define PIF_SYSCALL_RESTART 1 /* restart the current system call */ |
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#define PIF_SYSCALL_RET_SET 2 /* return value was set via ptrace */ |
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#define PIF_GUEST_FAULT 3 /* indicates program check in sie64a */ |
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#define _PIF_SYSCALL BIT(PIF_SYSCALL) |
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#define _PIF_SYSCALL_RESTART BIT(PIF_SYSCALL_RESTART) |
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#define _PIF_SYSCALL_RET_SET BIT(PIF_SYSCALL_RET_SET) |
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#define _PIF_GUEST_FAULT BIT(PIF_GUEST_FAULT) |
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#ifndef __ASSEMBLY__ |
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#define PSW_KERNEL_BITS (PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_ASC_HOME | \ |
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PSW_MASK_EA | PSW_MASK_BA) |
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#define PSW_USER_BITS (PSW_MASK_DAT | PSW_MASK_IO | PSW_MASK_EXT | \ |
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PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_MCHECK | \ |
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PSW_MASK_PSTATE | PSW_ASC_PRIMARY) |
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struct psw_bits { |
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unsigned long : 1; |
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unsigned long per : 1; /* PER-Mask */ |
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unsigned long : 3; |
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unsigned long dat : 1; /* DAT Mode */ |
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unsigned long io : 1; /* Input/Output Mask */ |
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unsigned long ext : 1; /* External Mask */ |
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unsigned long key : 4; /* PSW Key */ |
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unsigned long : 1; |
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unsigned long mcheck : 1; /* Machine-Check Mask */ |
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unsigned long wait : 1; /* Wait State */ |
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unsigned long pstate : 1; /* Problem State */ |
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unsigned long as : 2; /* Address Space Control */ |
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unsigned long cc : 2; /* Condition Code */ |
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unsigned long pm : 4; /* Program Mask */ |
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unsigned long ri : 1; /* Runtime Instrumentation */ |
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unsigned long : 6; |
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unsigned long eaba : 2; /* Addressing Mode */ |
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unsigned long : 31; |
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unsigned long ia : 64; /* Instruction Address */ |
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}; |
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enum { |
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PSW_BITS_AMODE_24BIT = 0, |
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PSW_BITS_AMODE_31BIT = 1, |
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PSW_BITS_AMODE_64BIT = 3 |
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}; |
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enum { |
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PSW_BITS_AS_PRIMARY = 0, |
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PSW_BITS_AS_ACCREG = 1, |
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PSW_BITS_AS_SECONDARY = 2, |
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PSW_BITS_AS_HOME = 3 |
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}; |
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#define psw_bits(__psw) (*({ \ |
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typecheck(psw_t, __psw); \ |
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&(*(struct psw_bits *)(&(__psw))); \ |
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})) |
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#define PGM_INT_CODE_MASK 0x7f |
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#define PGM_INT_CODE_PER 0x80 |
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/* |
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* The pt_regs struct defines the way the registers are stored on |
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* the stack during a system call. |
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*/ |
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struct pt_regs |
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{ |
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union { |
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user_pt_regs user_regs; |
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struct { |
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unsigned long args[1]; |
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psw_t psw; |
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unsigned long gprs[NUM_GPRS]; |
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}; |
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}; |
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unsigned long orig_gpr2; |
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unsigned int int_code; |
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unsigned int int_parm; |
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unsigned long int_parm_long; |
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unsigned long flags; |
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unsigned long cr1; |
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}; |
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/* |
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* Program event recording (PER) register set. |
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*/ |
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struct per_regs { |
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unsigned long control; /* PER control bits */ |
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unsigned long start; /* PER starting address */ |
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unsigned long end; /* PER ending address */ |
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}; |
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/* |
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* PER event contains information about the cause of the last PER exception. |
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*/ |
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struct per_event { |
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unsigned short cause; /* PER code, ATMID and AI */ |
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unsigned long address; /* PER address */ |
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unsigned char paid; /* PER access identification */ |
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}; |
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/* |
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* Simplified per_info structure used to decode the ptrace user space ABI. |
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*/ |
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struct per_struct_kernel { |
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unsigned long cr9; /* PER control bits */ |
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unsigned long cr10; /* PER starting address */ |
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unsigned long cr11; /* PER ending address */ |
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unsigned long bits; /* Obsolete software bits */ |
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unsigned long starting_addr; /* User specified start address */ |
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unsigned long ending_addr; /* User specified end address */ |
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unsigned short perc_atmid; /* PER trap ATMID */ |
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unsigned long address; /* PER trap instruction address */ |
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unsigned char access_id; /* PER trap access identification */ |
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}; |
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#define PER_EVENT_MASK 0xEB000000UL |
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#define PER_EVENT_BRANCH 0x80000000UL |
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#define PER_EVENT_IFETCH 0x40000000UL |
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#define PER_EVENT_STORE 0x20000000UL |
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#define PER_EVENT_STORE_REAL 0x08000000UL |
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#define PER_EVENT_TRANSACTION_END 0x02000000UL |
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#define PER_EVENT_NULLIFICATION 0x01000000UL |
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#define PER_CONTROL_MASK 0x00e00000UL |
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#define PER_CONTROL_BRANCH_ADDRESS 0x00800000UL |
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#define PER_CONTROL_SUSPENSION 0x00400000UL |
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#define PER_CONTROL_ALTERATION 0x00200000UL |
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static inline void set_pt_regs_flag(struct pt_regs *regs, int flag) |
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{ |
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regs->flags |= (1UL << flag); |
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} |
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static inline void clear_pt_regs_flag(struct pt_regs *regs, int flag) |
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{ |
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regs->flags &= ~(1UL << flag); |
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} |
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static inline int test_pt_regs_flag(struct pt_regs *regs, int flag) |
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{ |
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return !!(regs->flags & (1UL << flag)); |
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} |
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/* |
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* These are defined as per linux/ptrace.h, which see. |
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*/ |
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#define arch_has_single_step() (1) |
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#define arch_has_block_step() (1) |
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#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0) |
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#define instruction_pointer(regs) ((regs)->psw.addr) |
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#define user_stack_pointer(regs)((regs)->gprs[15]) |
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#define profile_pc(regs) instruction_pointer(regs) |
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static inline long regs_return_value(struct pt_regs *regs) |
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{ |
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return regs->gprs[2]; |
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} |
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static inline void instruction_pointer_set(struct pt_regs *regs, |
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unsigned long val) |
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{ |
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regs->psw.addr = val; |
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} |
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int regs_query_register_offset(const char *name); |
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const char *regs_query_register_name(unsigned int offset); |
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unsigned long regs_get_register(struct pt_regs *regs, unsigned int offset); |
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unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n); |
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static inline unsigned long kernel_stack_pointer(struct pt_regs *regs) |
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{ |
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return regs->gprs[15]; |
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} |
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static inline void regs_set_return_value(struct pt_regs *regs, unsigned long rc) |
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{ |
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regs->gprs[2] = rc; |
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} |
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#endif /* __ASSEMBLY__ */ |
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#endif /* _S390_PTRACE_H */
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