189 lines
5.3 KiB
C
189 lines
5.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* 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 <linux/bits.h>
|
|
#include <uapi/asm/ptrace.h>
|
|
|
|
#define PIF_SYSCALL 0 /* inside a system call */
|
|
#define PIF_PER_TRAP 1 /* deliver sigtrap on return to user */
|
|
#define PIF_SYSCALL_RESTART 2 /* restart the current system call */
|
|
#define PIF_GUEST_FAULT 3 /* indicates program check in sie64a */
|
|
|
|
#define _PIF_SYSCALL BIT(PIF_SYSCALL)
|
|
#define _PIF_PER_TRAP BIT(PIF_PER_TRAP)
|
|
#define _PIF_SYSCALL_RESTART BIT(PIF_SYSCALL_RESTART)
|
|
#define _PIF_GUEST_FAULT BIT(PIF_GUEST_FAULT)
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#define PSW_KERNEL_BITS (PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_ASC_HOME | \
|
|
PSW_MASK_EA | PSW_MASK_BA)
|
|
#define PSW_USER_BITS (PSW_MASK_DAT | PSW_MASK_IO | PSW_MASK_EXT | \
|
|
PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_MCHECK | \
|
|
PSW_MASK_PSTATE | PSW_ASC_PRIMARY)
|
|
|
|
struct psw_bits {
|
|
unsigned long : 1;
|
|
unsigned long per : 1; /* PER-Mask */
|
|
unsigned long : 3;
|
|
unsigned long dat : 1; /* DAT Mode */
|
|
unsigned long io : 1; /* Input/Output Mask */
|
|
unsigned long ext : 1; /* External Mask */
|
|
unsigned long key : 4; /* PSW Key */
|
|
unsigned long : 1;
|
|
unsigned long mcheck : 1; /* Machine-Check Mask */
|
|
unsigned long wait : 1; /* Wait State */
|
|
unsigned long pstate : 1; /* Problem State */
|
|
unsigned long as : 2; /* Address Space Control */
|
|
unsigned long cc : 2; /* Condition Code */
|
|
unsigned long pm : 4; /* Program Mask */
|
|
unsigned long ri : 1; /* Runtime Instrumentation */
|
|
unsigned long : 6;
|
|
unsigned long eaba : 2; /* Addressing Mode */
|
|
unsigned long : 31;
|
|
unsigned long ia : 64; /* Instruction Address */
|
|
};
|
|
|
|
enum {
|
|
PSW_BITS_AMODE_24BIT = 0,
|
|
PSW_BITS_AMODE_31BIT = 1,
|
|
PSW_BITS_AMODE_64BIT = 3
|
|
};
|
|
|
|
enum {
|
|
PSW_BITS_AS_PRIMARY = 0,
|
|
PSW_BITS_AS_ACCREG = 1,
|
|
PSW_BITS_AS_SECONDARY = 2,
|
|
PSW_BITS_AS_HOME = 3
|
|
};
|
|
|
|
#define psw_bits(__psw) (*({ \
|
|
typecheck(psw_t, __psw); \
|
|
&(*(struct psw_bits *)(&(__psw))); \
|
|
}))
|
|
|
|
/*
|
|
* The pt_regs struct defines the way the registers are stored on
|
|
* the stack during a system call.
|
|
*/
|
|
struct pt_regs
|
|
{
|
|
union {
|
|
user_pt_regs user_regs;
|
|
struct {
|
|
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;
|
|
unsigned long flags;
|
|
};
|
|
|
|
/*
|
|
* 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
|
|
|
|
static inline void set_pt_regs_flag(struct pt_regs *regs, int flag)
|
|
{
|
|
regs->flags |= (1UL << flag);
|
|
}
|
|
|
|
static inline void clear_pt_regs_flag(struct pt_regs *regs, int flag)
|
|
{
|
|
regs->flags &= ~(1UL << flag);
|
|
}
|
|
|
|
static inline int test_pt_regs_flag(struct pt_regs *regs, int flag)
|
|
{
|
|
return !!(regs->flags & (1UL << flag));
|
|
}
|
|
|
|
/*
|
|
* These are defined as per linux/ptrace.h, which see.
|
|
*/
|
|
#define arch_has_single_step() (1)
|
|
#define arch_has_block_step() (1)
|
|
|
|
#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
|
|
#define instruction_pointer(regs) ((regs)->psw.addr)
|
|
#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];
|
|
}
|
|
|
|
static inline void instruction_pointer_set(struct pt_regs *regs,
|
|
unsigned long val)
|
|
{
|
|
regs->psw.addr = val;
|
|
}
|
|
|
|
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];
|
|
}
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
#endif /* _S390_PTRACE_H */
|