[deliverable/linux.git] / arch / s390 / include / asm / ptrace.h

/*
 *  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__

#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)

/*
 * 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 arch_has_block_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 */
Commit	Line	Data
1da177e4	1	/*
1da177e4	2	* S390 version
a53c8fab	3	* Copyright IBM Corp. 1999, 2000
1da177e4 LT	4	* Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
1da177e4 LT	5	*/
1da177e4 LT	6	#ifndef _S390_PTRACE_H
	7	#define _S390_PTRACE_H
	8
9807f759	9	#include <uapi/asm/ptrace.h>
1da177e4 LT	10
1da177e4 LT	11	#ifndef __ASSEMBLY__
63dd9b44	12
e258d719 MS	13	#define PSW_KERNEL_BITS (PSW_DEFAULT_KEY \| PSW_MASK_BASE \| PSW_ASC_HOME \| \
	14	PSW_MASK_EA \| PSW_MASK_BA)
	15	#define PSW_USER_BITS (PSW_MASK_DAT \| PSW_MASK_IO \| PSW_MASK_EXT \| \
	16	PSW_DEFAULT_KEY \| PSW_MASK_BASE \| PSW_MASK_MCHECK \| \
	17	PSW_MASK_PSTATE \| PSW_ASC_PRIMARY)
274f5946	18
1da177e4 LT	19	/*
	20	* The pt_regs struct defines the way the registers are stored on
	21	* the stack during a system call.
	22	*/
	23	struct pt_regs
	24	{
	25	unsigned long args[1];
	26	psw_t psw;
	27	unsigned long gprs[NUM_GPRS];
	28	unsigned long orig_gpr2;
aa33c8cb	29	unsigned int int_code;
48f6b00c	30	unsigned int int_parm;
aa33c8cb	31	unsigned long int_parm_long;
1da177e4	32	};
5e9a2692 MS	33
	34	/*
	35	* Program event recording (PER) register set.
	36	*/
	37	struct per_regs {
	38	unsigned long control; /* PER control bits */
	39	unsigned long start; /* PER starting address */
	40	unsigned long end; /* PER ending address */
	41	};
	42
	43	/*
	44	* PER event contains information about the cause of the last PER exception.
	45	*/
	46	struct per_event {
	47	unsigned short cause; /* PER code, ATMID and AI */
	48	unsigned long address; /* PER address */
	49	unsigned char paid; /* PER access identification */
	50	};
	51
	52	/*
	53	* Simplified per_info structure used to decode the ptrace user space ABI.
	54	*/
	55	struct per_struct_kernel {
	56	unsigned long cr9; /* PER control bits */
	57	unsigned long cr10; /* PER starting address */
	58	unsigned long cr11; /* PER ending address */
	59	unsigned long bits; /* Obsolete software bits */
	60	unsigned long starting_addr; /* User specified start address */
	61	unsigned long ending_addr; /* User specified end address */
	62	unsigned short perc_atmid; /* PER trap ATMID */
	63	unsigned long address; /* PER trap instruction address */
	64	unsigned char access_id; /* PER trap access identification */
	65	};
	66
d35339a4	67	#define PER_EVENT_MASK 0xEB000000UL
5e9a2692 MS	68
	69	#define PER_EVENT_BRANCH 0x80000000UL
	70	#define PER_EVENT_IFETCH 0x40000000UL
	71	#define PER_EVENT_STORE 0x20000000UL
	72	#define PER_EVENT_STORE_REAL 0x08000000UL
d35339a4	73	#define PER_EVENT_TRANSACTION_END 0x02000000UL
5e9a2692 MS	74	#define PER_EVENT_NULLIFICATION 0x01000000UL
5e9a2692 MS	75
d35339a4	76	#define PER_CONTROL_MASK 0x00e00000UL
5e9a2692 MS	77
5e9a2692 MS	78	#define PER_CONTROL_BRANCH_ADDRESS 0x00800000UL
d35339a4	79	#define PER_CONTROL_SUSPENSION 0x00400000UL
5e9a2692 MS	80	#define PER_CONTROL_ALTERATION 0x00200000UL
5e9a2692 MS	81
0ac30be4 RM	82	/*
	83	* These are defined as per linux/ptrace.h, which see.
	84	*/
	85	#define arch_has_single_step() (1)
818a330c	86	#define arch_has_block_step() (1)
0ac30be4	87
1da177e4 LT	88	#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
1da177e4 LT	89	#define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN)
753c4dd6	90	#define user_stack_pointer(regs)((regs)->gprs[15])
1da177e4	91	#define profile_pc(regs) instruction_pointer(regs)
952974ac	92
d7e7528b EP	93	static inline long regs_return_value(struct pt_regs *regs)
	94	{
	95	return regs->gprs[2];
	96	}
	97
952974ac HC	98	int regs_query_register_offset(const char *name);
	99	const char *regs_query_register_name(unsigned int offset);
	100	unsigned long regs_get_register(struct pt_regs *regs, unsigned int offset);
	101	unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n);
	102
	103	static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
	104	{
	105	return regs->gprs[15] & PSW_ADDR_INSN;
	106	}
	107
1da177e4	108	#endif /* __ASSEMBLY__ */
1da177e4	109	#endif /* _S390_PTRACE_H */