include/asm-s390/ptrace.h - maze/linux - Git at Google

 /*
  *  include/asm-s390/ptrace.h
  *
  *  S390 version
  *    Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
  *    Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
  */

 #ifndef _S390_PTRACE_H
 #define _S390_PTRACE_H

 /*
  * Offsets in the user_regs_struct. They are used for the ptrace
  * system call and in entry.S
  */
 #ifndef __s390x__

 #define PT_PSWMASK  0x00
 #define PT_PSWADDR  0x04
 #define PT_GPR0     0x08
 #define PT_GPR1     0x0C
 #define PT_GPR2     0x10
 #define PT_GPR3     0x14
 #define PT_GPR4     0x18
 #define PT_GPR5     0x1C
 #define PT_GPR6     0x20
 #define PT_GPR7     0x24
 #define PT_GPR8     0x28
 #define PT_GPR9     0x2C
 #define PT_GPR10    0x30
 #define PT_GPR11    0x34
 #define PT_GPR12    0x38
 #define PT_GPR13    0x3C
 #define PT_GPR14    0x40
 #define PT_GPR15    0x44
 #define PT_ACR0     0x48
 #define PT_ACR1     0x4C
 #define PT_ACR2     0x50
 #define PT_ACR3     0x54
 #define PT_ACR4	    0x58
 #define PT_ACR5	    0x5C
 #define PT_ACR6	    0x60
 #define PT_ACR7	    0x64
 #define PT_ACR8	    0x68
 #define PT_ACR9	    0x6C
 #define PT_ACR10    0x70
 #define PT_ACR11    0x74
 #define PT_ACR12    0x78
 #define PT_ACR13    0x7C
 #define PT_ACR14    0x80
 #define PT_ACR15    0x84
 #define PT_ORIGGPR2 0x88
 #define PT_FPC	    0x90
 /*
  * A nasty fact of life that the ptrace api
  * only supports passing of longs.
  */
 #define PT_FPR0_HI  0x98
 #define PT_FPR0_LO  0x9C
 #define PT_FPR1_HI  0xA0
 #define PT_FPR1_LO  0xA4
 #define PT_FPR2_HI  0xA8
 #define PT_FPR2_LO  0xAC
 #define PT_FPR3_HI  0xB0
 #define PT_FPR3_LO  0xB4
 #define PT_FPR4_HI  0xB8
 #define PT_FPR4_LO  0xBC
 #define PT_FPR5_HI  0xC0
 #define PT_FPR5_LO  0xC4
 #define PT_FPR6_HI  0xC8
 #define PT_FPR6_LO  0xCC
 #define PT_FPR7_HI  0xD0
 #define PT_FPR7_LO  0xD4
 #define PT_FPR8_HI  0xD8
 #define PT_FPR8_LO  0XDC
 #define PT_FPR9_HI  0xE0
 #define PT_FPR9_LO  0xE4
 #define PT_FPR10_HI 0xE8
 #define PT_FPR10_LO 0xEC
 #define PT_FPR11_HI 0xF0
 #define PT_FPR11_LO 0xF4
 #define PT_FPR12_HI 0xF8
 #define PT_FPR12_LO 0xFC
 #define PT_FPR13_HI 0x100
 #define PT_FPR13_LO 0x104
 #define PT_FPR14_HI 0x108
 #define PT_FPR14_LO 0x10C
 #define PT_FPR15_HI 0x110
 #define PT_FPR15_LO 0x114
 #define PT_CR_9	    0x118
 #define PT_CR_10    0x11C
 #define PT_CR_11    0x120
 #define PT_IEEE_IP  0x13C
 #define PT_LASTOFF  PT_IEEE_IP
 #define PT_ENDREGS  0x140-1

 #define GPR_SIZE	4
 #define CR_SIZE		4

 #define STACK_FRAME_OVERHEAD	96	/* size of minimum stack frame */

 #else /* __s390x__ */

 #define PT_PSWMASK  0x00
 #define PT_PSWADDR  0x08
 #define PT_GPR0     0x10
 #define PT_GPR1     0x18
 #define PT_GPR2     0x20
 #define PT_GPR3     0x28
 #define PT_GPR4     0x30
 #define PT_GPR5     0x38
 #define PT_GPR6     0x40
 #define PT_GPR7     0x48
 #define PT_GPR8     0x50
 #define PT_GPR9     0x58
 #define PT_GPR10    0x60
 #define PT_GPR11    0x68
 #define PT_GPR12    0x70
 #define PT_GPR13    0x78
 #define PT_GPR14    0x80
 #define PT_GPR15    0x88
 #define PT_ACR0     0x90
 #define PT_ACR1     0x94
 #define PT_ACR2     0x98
 #define PT_ACR3     0x9C
 #define PT_ACR4	    0xA0
 #define PT_ACR5	    0xA4
 #define PT_ACR6	    0xA8
 #define PT_ACR7	    0xAC
 #define PT_ACR8	    0xB0
 #define PT_ACR9	    0xB4
 #define PT_ACR10    0xB8
 #define PT_ACR11    0xBC
 #define PT_ACR12    0xC0
 #define PT_ACR13    0xC4
 #define PT_ACR14    0xC8
 #define PT_ACR15    0xCC
 #define PT_ORIGGPR2 0xD0
 #define PT_FPC	    0xD8
 #define PT_FPR0     0xE0
 #define PT_FPR1     0xE8
 #define PT_FPR2     0xF0
 #define PT_FPR3     0xF8
 #define PT_FPR4     0x100
 #define PT_FPR5     0x108
 #define PT_FPR6     0x110
 #define PT_FPR7     0x118
 #define PT_FPR8     0x120
 #define PT_FPR9     0x128
 #define PT_FPR10    0x130
 #define PT_FPR11    0x138
 #define PT_FPR12    0x140
 #define PT_FPR13    0x148
 #define PT_FPR14    0x150
 #define PT_FPR15    0x158
 #define PT_CR_9     0x160
 #define PT_CR_10    0x168
 #define PT_CR_11    0x170
 #define PT_IEEE_IP  0x1A8
 #define PT_LASTOFF  PT_IEEE_IP
 #define PT_ENDREGS  0x1B0-1

 #define GPR_SIZE	8
 #define CR_SIZE		8

 #define STACK_FRAME_OVERHEAD    160      /* size of minimum stack frame */

 #endif /* __s390x__ */

 #define NUM_GPRS	16
 #define NUM_FPRS	16
 #define NUM_CRS		16
 #define NUM_ACRS	16

 #define FPR_SIZE	8
 #define FPC_SIZE	4
 #define FPC_PAD_SIZE	4 /* gcc insists on aligning the fpregs */
 #define ACR_SIZE	4


 #define PTRACE_OLDSETOPTIONS         21

 #ifndef __ASSEMBLY__
 #include <linux/stddef.h>
 #include <linux/types.h>

 typedef union
 {
 	float   f;
 	double  d;
         __u64   ui;
 	struct
 	{
 		__u32 hi;
 		__u32 lo;
 	} fp;
 } freg_t;

 typedef struct
 {
 	__u32   fpc;
 	freg_t  fprs[NUM_FPRS];
 } s390_fp_regs;

 #define FPC_EXCEPTION_MASK      0xF8000000
 #define FPC_FLAGS_MASK          0x00F80000
 #define FPC_DXC_MASK            0x0000FF00
 #define FPC_RM_MASK             0x00000003
 #define FPC_VALID_MASK          0xF8F8FF03

 /* this typedef defines how a Program Status Word looks like */
 typedef struct
 {
         unsigned long mask;
         unsigned long addr;
 } __attribute__ ((aligned(8))) psw_t;

 #ifndef __s390x__

 #define PSW_MASK_PER		0x40000000UL
 #define PSW_MASK_DAT		0x04000000UL
 #define PSW_MASK_IO		0x02000000UL
 #define PSW_MASK_EXT		0x01000000UL
 #define PSW_MASK_KEY		0x00F00000UL
 #define PSW_MASK_MCHECK		0x00040000UL
 #define PSW_MASK_WAIT		0x00020000UL
 #define PSW_MASK_PSTATE		0x00010000UL
 #define PSW_MASK_ASC		0x0000C000UL
 #define PSW_MASK_CC		0x00003000UL
 #define PSW_MASK_PM		0x00000F00UL

 #define PSW_ADDR_AMODE		0x80000000UL
 #define PSW_ADDR_INSN		0x7FFFFFFFUL

 #define PSW_BASE_BITS		0x00080000UL
 #define PSW_DEFAULT_KEY		(((unsigned long) PAGE_DEFAULT_ACC) << 20)

 #define PSW_ASC_PRIMARY		0x00000000UL
 #define PSW_ASC_ACCREG		0x00004000UL
 #define PSW_ASC_SECONDARY	0x00008000UL
 #define PSW_ASC_HOME		0x0000C000UL

 #else /* __s390x__ */

 #define PSW_MASK_PER		0x4000000000000000UL
 #define PSW_MASK_DAT		0x0400000000000000UL
 #define PSW_MASK_IO		0x0200000000000000UL
 #define PSW_MASK_EXT		0x0100000000000000UL
 #define PSW_MASK_KEY		0x00F0000000000000UL
 #define PSW_MASK_MCHECK		0x0004000000000000UL
 #define PSW_MASK_WAIT		0x0002000000000000UL
 #define PSW_MASK_PSTATE		0x0001000000000000UL
 #define PSW_MASK_ASC		0x0000C00000000000UL
 #define PSW_MASK_CC		0x0000300000000000UL
 #define PSW_MASK_PM		0x00000F0000000000UL

 #define PSW_ADDR_AMODE		0x0000000000000000UL
 #define PSW_ADDR_INSN		0xFFFFFFFFFFFFFFFFUL

 #define PSW_BASE_BITS		0x0000000180000000UL
 #define PSW_BASE32_BITS		0x0000000080000000UL
 #define PSW_DEFAULT_KEY		(((unsigned long) PAGE_DEFAULT_ACC) << 52)

 #define PSW_ASC_PRIMARY		0x0000000000000000UL
 #define PSW_ASC_ACCREG		0x0000400000000000UL
 #define PSW_ASC_SECONDARY	0x0000800000000000UL
 #define PSW_ASC_HOME		0x0000C00000000000UL

 #define PSW_USER32_BITS (PSW_BASE32_BITS | PSW_MASK_DAT | PSW_ASC_HOME | \
 			 PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK | \
 			 PSW_MASK_PSTATE | PSW_DEFAULT_KEY)

 #endif /* __s390x__ */

 #define PSW_KERNEL_BITS	(PSW_BASE_BITS | PSW_MASK_DAT | PSW_ASC_PRIMARY | \
 			 PSW_MASK_MCHECK | PSW_DEFAULT_KEY)
 #define PSW_USER_BITS	(PSW_BASE_BITS | PSW_MASK_DAT | PSW_ASC_HOME | \
 			 PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK | \
 			 PSW_MASK_PSTATE | PSW_DEFAULT_KEY)

 /* This macro merges a NEW PSW mask specified by the user into
    the currently active PSW mask CURRENT, modifying only those
    bits in CURRENT that the user may be allowed to change: this
    is the condition code and the program mask bits.  */
 #define PSW_MASK_MERGE(CURRENT,NEW) \
 	(((CURRENT) & ~(PSW_MASK_CC|PSW_MASK_PM)) | \
 	 ((NEW) & (PSW_MASK_CC|PSW_MASK_PM)))

 /*
  * The s390_regs structure is used to define the elf_gregset_t.
  */
 typedef struct
 {
 	psw_t psw;
 	unsigned long gprs[NUM_GPRS];
 	unsigned int  acrs[NUM_ACRS];
 	unsigned long orig_gpr2;
 } s390_regs;

 #ifdef __KERNEL__
 #include <asm/setup.h>
 #include <asm/page.h>

 /*
  * 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 short ilc;
 	unsigned short trap;
 };
 #endif

 /*
  * Now for the program event recording (trace) definitions.
  */
 typedef struct
 {
 	unsigned long cr[3];
 } per_cr_words;

 #define PER_EM_MASK 0xE8000000UL

 typedef	struct
 {
 #ifdef __s390x__
 	unsigned                       : 32;
 #endif /* __s390x__ */
 	unsigned em_branching          : 1;
 	unsigned em_instruction_fetch  : 1;
 	/*
 	 * Switching on storage alteration automatically fixes
 	 * the storage alteration event bit in the users std.
 	 */
 	unsigned em_storage_alteration : 1;
 	unsigned em_gpr_alt_unused     : 1;
 	unsigned em_store_real_address : 1;
 	unsigned                       : 3;
 	unsigned branch_addr_ctl       : 1;
 	unsigned                       : 1;
 	unsigned storage_alt_space_ctl : 1;
 	unsigned                       : 21;
 	unsigned long starting_addr;
 	unsigned long ending_addr;
 } per_cr_bits;

 typedef struct
 {
 	unsigned short perc_atmid;
 	unsigned long address;
 	unsigned char access_id;
 } per_lowcore_words;

 typedef struct
 {
 	unsigned perc_branching          : 1;
 	unsigned perc_instruction_fetch  : 1;
 	unsigned perc_storage_alteration : 1;
 	unsigned perc_gpr_alt_unused     : 1;
 	unsigned perc_store_real_address : 1;
 	unsigned                         : 3;
 	unsigned atmid_psw_bit_31        : 1;
 	unsigned atmid_validity_bit      : 1;
 	unsigned atmid_psw_bit_32        : 1;
 	unsigned atmid_psw_bit_5         : 1;
 	unsigned atmid_psw_bit_16        : 1;
 	unsigned atmid_psw_bit_17        : 1;
 	unsigned si                      : 2;
 	unsigned long address;
 	unsigned                         : 4;
 	unsigned access_id               : 4;
 } per_lowcore_bits;

 typedef struct
 {
 	union {
 		per_cr_words   words;
 		per_cr_bits    bits;
 	} control_regs;
 	/*
 	 * Use these flags instead of setting em_instruction_fetch
 	 * directly they are used so that single stepping can be
 	 * switched on & off while not affecting other tracing
 	 */
 	unsigned  single_step       : 1;
 	unsigned  instruction_fetch : 1;
 	unsigned                    : 30;
 	/*
 	 * These addresses are copied into cr10 & cr11 if single
 	 * stepping is switched off
 	 */
 	unsigned long starting_addr;
 	unsigned long ending_addr;
 	union {
 		per_lowcore_words words;
 		per_lowcore_bits  bits;
 	} lowcore;
 } per_struct;

 typedef struct
 {
 	unsigned int  len;
 	unsigned long kernel_addr;
 	unsigned long process_addr;
 } ptrace_area;

 /*
  * S/390 specific non posix ptrace requests. I chose unusual values so
  * they are unlikely to clash with future ptrace definitions.
  */
 #define PTRACE_PEEKUSR_AREA           0x5000
 #define PTRACE_POKEUSR_AREA           0x5001
 #define PTRACE_PEEKTEXT_AREA	      0x5002
 #define PTRACE_PEEKDATA_AREA	      0x5003
 #define PTRACE_POKETEXT_AREA	      0x5004
 #define PTRACE_POKEDATA_AREA 	      0x5005

 /*
  * PT_PROT definition is loosely based on hppa bsd definition in
  * gdb/hppab-nat.c
  */
 #define PTRACE_PROT                       21

 typedef enum
 {
 	ptprot_set_access_watchpoint,
 	ptprot_set_write_watchpoint,
 	ptprot_disable_watchpoint
 } ptprot_flags;

 typedef struct
 {
 	unsigned long lowaddr;
 	unsigned long hiaddr;
 	ptprot_flags prot;
 } ptprot_area;

 /* Sequence of bytes for breakpoint illegal instruction.  */
 #define S390_BREAKPOINT     {0x0,0x1}
 #define S390_BREAKPOINT_U16 ((__u16)0x0001)
 #define S390_SYSCALL_OPCODE ((__u16)0x0a00)
 #define S390_SYSCALL_SIZE   2

 /*
  * The user_regs_struct defines the way the user registers are
  * store on the stack for signal handling.
  */
 struct user_regs_struct
 {
 	psw_t psw;
 	unsigned long gprs[NUM_GPRS];
 	unsigned int  acrs[NUM_ACRS];
 	unsigned long orig_gpr2;
 	s390_fp_regs fp_regs;
 	/*
 	 * These per registers are in here so that gdb can modify them
 	 * itself as there is no "official" ptrace interface for hardware
 	 * watchpoints. This is the way intel does it.
 	 */
 	per_struct per_info;
 	unsigned long ieee_instruction_pointer;
 	/* Used to give failing instruction back to user for ieee exceptions */
 };

 #ifdef __KERNEL__
 #define __ARCH_SYS_PTRACE	1

 #define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
 #define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN)
 #define profile_pc(regs) instruction_pointer(regs)
 extern void show_regs(struct pt_regs * regs);
 #endif

 static inline void
 psw_set_key(unsigned int key)
 {
 	asm volatile ( "spka 0(%0)" : : "d" (key) );
 }

 #endif /* __ASSEMBLY__ */

 #endif /* _S390_PTRACE_H */
	/*
	* include/asm-s390/ptrace.h
	*
	* S390 version
	* Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
	* Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
	*/

	#ifndef _S390_PTRACE_H
	#define _S390_PTRACE_H

	/*
	* Offsets in the user_regs_struct. They are used for the ptrace
	* system call and in entry.S
	*/
	#ifndef __s390x__

	#define PT_PSWMASK 0x00
	#define PT_PSWADDR 0x04
	#define PT_GPR0 0x08
	#define PT_GPR1 0x0C
	#define PT_GPR2 0x10
	#define PT_GPR3 0x14
	#define PT_GPR4 0x18
	#define PT_GPR5 0x1C
	#define PT_GPR6 0x20
	#define PT_GPR7 0x24
	#define PT_GPR8 0x28
	#define PT_GPR9 0x2C
	#define PT_GPR10 0x30
	#define PT_GPR11 0x34
	#define PT_GPR12 0x38
	#define PT_GPR13 0x3C
	#define PT_GPR14 0x40
	#define PT_GPR15 0x44
	#define PT_ACR0 0x48
	#define PT_ACR1 0x4C
	#define PT_ACR2 0x50
	#define PT_ACR3 0x54
	#define PT_ACR4 0x58
	#define PT_ACR5 0x5C
	#define PT_ACR6 0x60
	#define PT_ACR7 0x64
	#define PT_ACR8 0x68
	#define PT_ACR9 0x6C
	#define PT_ACR10 0x70
	#define PT_ACR11 0x74
	#define PT_ACR12 0x78
	#define PT_ACR13 0x7C
	#define PT_ACR14 0x80
	#define PT_ACR15 0x84
	#define PT_ORIGGPR2 0x88
	#define PT_FPC 0x90
	/*
	* A nasty fact of life that the ptrace api
	* only supports passing of longs.
	*/
	#define PT_FPR0_HI 0x98
	#define PT_FPR0_LO 0x9C
	#define PT_FPR1_HI 0xA0
	#define PT_FPR1_LO 0xA4
	#define PT_FPR2_HI 0xA8
	#define PT_FPR2_LO 0xAC
	#define PT_FPR3_HI 0xB0
	#define PT_FPR3_LO 0xB4
	#define PT_FPR4_HI 0xB8
	#define PT_FPR4_LO 0xBC
	#define PT_FPR5_HI 0xC0
	#define PT_FPR5_LO 0xC4
	#define PT_FPR6_HI 0xC8
	#define PT_FPR6_LO 0xCC
	#define PT_FPR7_HI 0xD0
	#define PT_FPR7_LO 0xD4
	#define PT_FPR8_HI 0xD8
	#define PT_FPR8_LO 0XDC
	#define PT_FPR9_HI 0xE0
	#define PT_FPR9_LO 0xE4
	#define PT_FPR10_HI 0xE8
	#define PT_FPR10_LO 0xEC
	#define PT_FPR11_HI 0xF0
	#define PT_FPR11_LO 0xF4
	#define PT_FPR12_HI 0xF8
	#define PT_FPR12_LO 0xFC
	#define PT_FPR13_HI 0x100
	#define PT_FPR13_LO 0x104
	#define PT_FPR14_HI 0x108
	#define PT_FPR14_LO 0x10C
	#define PT_FPR15_HI 0x110
	#define PT_FPR15_LO 0x114
	#define PT_CR_9 0x118
	#define PT_CR_10 0x11C
	#define PT_CR_11 0x120
	#define PT_IEEE_IP 0x13C
	#define PT_LASTOFF PT_IEEE_IP
	#define PT_ENDREGS 0x140-1

	#define GPR_SIZE 4
	#define CR_SIZE 4

	#define STACK_FRAME_OVERHEAD 96 /* size of minimum stack frame */

	#else /* __s390x__ */

	#define PT_PSWMASK 0x00
	#define PT_PSWADDR 0x08
	#define PT_GPR0 0x10
	#define PT_GPR1 0x18
	#define PT_GPR2 0x20
	#define PT_GPR3 0x28
	#define PT_GPR4 0x30
	#define PT_GPR5 0x38
	#define PT_GPR6 0x40
	#define PT_GPR7 0x48
	#define PT_GPR8 0x50
	#define PT_GPR9 0x58
	#define PT_GPR10 0x60
	#define PT_GPR11 0x68
	#define PT_GPR12 0x70
	#define PT_GPR13 0x78
	#define PT_GPR14 0x80
	#define PT_GPR15 0x88
	#define PT_ACR0 0x90
	#define PT_ACR1 0x94
	#define PT_ACR2 0x98
	#define PT_ACR3 0x9C
	#define PT_ACR4 0xA0
	#define PT_ACR5 0xA4
	#define PT_ACR6 0xA8
	#define PT_ACR7 0xAC
	#define PT_ACR8 0xB0
	#define PT_ACR9 0xB4
	#define PT_ACR10 0xB8
	#define PT_ACR11 0xBC
	#define PT_ACR12 0xC0
	#define PT_ACR13 0xC4
	#define PT_ACR14 0xC8
	#define PT_ACR15 0xCC
	#define PT_ORIGGPR2 0xD0
	#define PT_FPC 0xD8
	#define PT_FPR0 0xE0
	#define PT_FPR1 0xE8
	#define PT_FPR2 0xF0
	#define PT_FPR3 0xF8
	#define PT_FPR4 0x100
	#define PT_FPR5 0x108
	#define PT_FPR6 0x110
	#define PT_FPR7 0x118
	#define PT_FPR8 0x120
	#define PT_FPR9 0x128
	#define PT_FPR10 0x130
	#define PT_FPR11 0x138
	#define PT_FPR12 0x140
	#define PT_FPR13 0x148
	#define PT_FPR14 0x150
	#define PT_FPR15 0x158
	#define PT_CR_9 0x160
	#define PT_CR_10 0x168
	#define PT_CR_11 0x170
	#define PT_IEEE_IP 0x1A8
	#define PT_LASTOFF PT_IEEE_IP
	#define PT_ENDREGS 0x1B0-1

	#define GPR_SIZE 8
	#define CR_SIZE 8

	#define STACK_FRAME_OVERHEAD 160 /* size of minimum stack frame */

	#endif /* __s390x__ */

	#define NUM_GPRS 16
	#define NUM_FPRS 16
	#define NUM_CRS 16
	#define NUM_ACRS 16

	#define FPR_SIZE 8
	#define FPC_SIZE 4
	#define FPC_PAD_SIZE 4 /* gcc insists on aligning the fpregs */
	#define ACR_SIZE 4


	#define PTRACE_OLDSETOPTIONS 21

	#ifndef __ASSEMBLY__
	#include <linux/stddef.h>
	#include <linux/types.h>

	typedef union
	{
	float f;
	double d;
	__u64 ui;
	struct
	{
	__u32 hi;
	__u32 lo;
	} fp;
	} freg_t;

	typedef struct
	{
	__u32 fpc;
	freg_t fprs[NUM_FPRS];
	} s390_fp_regs;

	#define FPC_EXCEPTION_MASK 0xF8000000
	#define FPC_FLAGS_MASK 0x00F80000
	#define FPC_DXC_MASK 0x0000FF00
	#define FPC_RM_MASK 0x00000003
	#define FPC_VALID_MASK 0xF8F8FF03

	/* this typedef defines how a Program Status Word looks like */
	typedef struct
	{
	unsigned long mask;
	unsigned long addr;
	} __attribute__ ((aligned(8))) psw_t;

	#ifndef __s390x__

	#define PSW_MASK_PER 0x40000000UL
	#define PSW_MASK_DAT 0x04000000UL
	#define PSW_MASK_IO 0x02000000UL
	#define PSW_MASK_EXT 0x01000000UL
	#define PSW_MASK_KEY 0x00F00000UL
	#define PSW_MASK_MCHECK 0x00040000UL
	#define PSW_MASK_WAIT 0x00020000UL
	#define PSW_MASK_PSTATE 0x00010000UL
	#define PSW_MASK_ASC 0x0000C000UL
	#define PSW_MASK_CC 0x00003000UL
	#define PSW_MASK_PM 0x00000F00UL

	#define PSW_ADDR_AMODE 0x80000000UL
	#define PSW_ADDR_INSN 0x7FFFFFFFUL

	#define PSW_BASE_BITS 0x00080000UL
	#define PSW_DEFAULT_KEY (((unsigned long) PAGE_DEFAULT_ACC) << 20)

	#define PSW_ASC_PRIMARY 0x00000000UL
	#define PSW_ASC_ACCREG 0x00004000UL
	#define PSW_ASC_SECONDARY 0x00008000UL
	#define PSW_ASC_HOME 0x0000C000UL

	#else /* __s390x__ */

	#define PSW_MASK_PER 0x4000000000000000UL
	#define PSW_MASK_DAT 0x0400000000000000UL
	#define PSW_MASK_IO 0x0200000000000000UL
	#define PSW_MASK_EXT 0x0100000000000000UL
	#define PSW_MASK_KEY 0x00F0000000000000UL
	#define PSW_MASK_MCHECK 0x0004000000000000UL
	#define PSW_MASK_WAIT 0x0002000000000000UL
	#define PSW_MASK_PSTATE 0x0001000000000000UL
	#define PSW_MASK_ASC 0x0000C00000000000UL
	#define PSW_MASK_CC 0x0000300000000000UL
	#define PSW_MASK_PM 0x00000F0000000000UL

	#define PSW_ADDR_AMODE 0x0000000000000000UL
	#define PSW_ADDR_INSN 0xFFFFFFFFFFFFFFFFUL

	#define PSW_BASE_BITS 0x0000000180000000UL
	#define PSW_BASE32_BITS 0x0000000080000000UL
	#define PSW_DEFAULT_KEY (((unsigned long) PAGE_DEFAULT_ACC) << 52)

	#define PSW_ASC_PRIMARY 0x0000000000000000UL
	#define PSW_ASC_ACCREG 0x0000400000000000UL
	#define PSW_ASC_SECONDARY 0x0000800000000000UL
	#define PSW_ASC_HOME 0x0000C00000000000UL

	#define PSW_USER32_BITS (PSW_BASE32_BITS \| PSW_MASK_DAT \| PSW_ASC_HOME \| \
	PSW_MASK_IO \| PSW_MASK_EXT \| PSW_MASK_MCHECK \| \
	PSW_MASK_PSTATE \| PSW_DEFAULT_KEY)

	#endif /* __s390x__ */

	#define PSW_KERNEL_BITS (PSW_BASE_BITS \| PSW_MASK_DAT \| PSW_ASC_PRIMARY \| \
	PSW_MASK_MCHECK \| PSW_DEFAULT_KEY)
	#define PSW_USER_BITS (PSW_BASE_BITS \| PSW_MASK_DAT \| PSW_ASC_HOME \| \
	PSW_MASK_IO \| PSW_MASK_EXT \| PSW_MASK_MCHECK \| \
	PSW_MASK_PSTATE \| PSW_DEFAULT_KEY)

	/* This macro merges a NEW PSW mask specified by the user into
	the currently active PSW mask CURRENT, modifying only those
	bits in CURRENT that the user may be allowed to change: this
	is the condition code and the program mask bits. */
	#define PSW_MASK_MERGE(CURRENT,NEW) \
	(((CURRENT) & ~(PSW_MASK_CC\|PSW_MASK_PM)) \| \
	((NEW) & (PSW_MASK_CC\|PSW_MASK_PM)))

	/*
	* The s390_regs structure is used to define the elf_gregset_t.
	*/
	typedef struct
	{
	psw_t psw;
	unsigned long gprs[NUM_GPRS];
	unsigned int acrs[NUM_ACRS];
	unsigned long orig_gpr2;
	} s390_regs;

	#ifdef __KERNEL__
	#include <asm/setup.h>
	#include <asm/page.h>

	/*
	* 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 short ilc;
	unsigned short trap;
	};
	#endif

	/*
	* Now for the program event recording (trace) definitions.
	*/
	typedef struct
	{
	unsigned long cr[3];
	} per_cr_words;

	#define PER_EM_MASK 0xE8000000UL

	typedef struct
	{
	#ifdef __s390x__
	unsigned : 32;
	#endif /* __s390x__ */
	unsigned em_branching : 1;
	unsigned em_instruction_fetch : 1;
	/*
	* Switching on storage alteration automatically fixes
	* the storage alteration event bit in the users std.
	*/
	unsigned em_storage_alteration : 1;
	unsigned em_gpr_alt_unused : 1;
	unsigned em_store_real_address : 1;
	unsigned : 3;
	unsigned branch_addr_ctl : 1;
	unsigned : 1;
	unsigned storage_alt_space_ctl : 1;
	unsigned : 21;
	unsigned long starting_addr;
	unsigned long ending_addr;
	} per_cr_bits;

	typedef struct
	{
	unsigned short perc_atmid;
	unsigned long address;
	unsigned char access_id;
	} per_lowcore_words;

	typedef struct
	{
	unsigned perc_branching : 1;
	unsigned perc_instruction_fetch : 1;
	unsigned perc_storage_alteration : 1;
	unsigned perc_gpr_alt_unused : 1;
	unsigned perc_store_real_address : 1;
	unsigned : 3;
	unsigned atmid_psw_bit_31 : 1;
	unsigned atmid_validity_bit : 1;
	unsigned atmid_psw_bit_32 : 1;
	unsigned atmid_psw_bit_5 : 1;
	unsigned atmid_psw_bit_16 : 1;
	unsigned atmid_psw_bit_17 : 1;
	unsigned si : 2;
	unsigned long address;
	unsigned : 4;
	unsigned access_id : 4;
	} per_lowcore_bits;

	typedef struct
	{
	union {
	per_cr_words words;
	per_cr_bits bits;
	} control_regs;
	/*
	* Use these flags instead of setting em_instruction_fetch
	* directly they are used so that single stepping can be
	* switched on & off while not affecting other tracing
	*/
	unsigned single_step : 1;
	unsigned instruction_fetch : 1;
	unsigned : 30;
	/*
	* These addresses are copied into cr10 & cr11 if single
	* stepping is switched off
	*/
	unsigned long starting_addr;
	unsigned long ending_addr;
	union {
	per_lowcore_words words;
	per_lowcore_bits bits;
	} lowcore;
	} per_struct;

	typedef struct
	{
	unsigned int len;
	unsigned long kernel_addr;
	unsigned long process_addr;
	} ptrace_area;

	/*
	* S/390 specific non posix ptrace requests. I chose unusual values so
	* they are unlikely to clash with future ptrace definitions.
	*/
	#define PTRACE_PEEKUSR_AREA 0x5000
	#define PTRACE_POKEUSR_AREA 0x5001
	#define PTRACE_PEEKTEXT_AREA 0x5002
	#define PTRACE_PEEKDATA_AREA 0x5003
	#define PTRACE_POKETEXT_AREA 0x5004
	#define PTRACE_POKEDATA_AREA 0x5005

	/*
	* PT_PROT definition is loosely based on hppa bsd definition in
	* gdb/hppab-nat.c
	*/
	#define PTRACE_PROT 21

	typedef enum
	{
	ptprot_set_access_watchpoint,
	ptprot_set_write_watchpoint,
	ptprot_disable_watchpoint
	} ptprot_flags;

	typedef struct
	{
	unsigned long lowaddr;
	unsigned long hiaddr;
	ptprot_flags prot;
	} ptprot_area;

	/* Sequence of bytes for breakpoint illegal instruction. */
	#define S390_BREAKPOINT {0x0,0x1}
	#define S390_BREAKPOINT_U16 ((__u16)0x0001)
	#define S390_SYSCALL_OPCODE ((__u16)0x0a00)
	#define S390_SYSCALL_SIZE 2

	/*
	* The user_regs_struct defines the way the user registers are
	* store on the stack for signal handling.
	*/
	struct user_regs_struct
	{
	psw_t psw;
	unsigned long gprs[NUM_GPRS];
	unsigned int acrs[NUM_ACRS];
	unsigned long orig_gpr2;
	s390_fp_regs fp_regs;
	/*
	* These per registers are in here so that gdb can modify them
	* itself as there is no "official" ptrace interface for hardware
	* watchpoints. This is the way intel does it.
	*/
	per_struct per_info;
	unsigned long ieee_instruction_pointer;
	/* Used to give failing instruction back to user for ieee exceptions */
	};

	#ifdef __KERNEL__
	#define __ARCH_SYS_PTRACE 1

	#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
	#define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN)
	#define profile_pc(regs) instruction_pointer(regs)
	extern void show_regs(struct pt_regs * regs);
	#endif

	static inline void
	psw_set_key(unsigned int key)
	{
	asm volatile ( "spka 0(%0)" : : "d" (key) );
	}

	#endif /* __ASSEMBLY__ */

	#endif /* _S390_PTRACE_H */