[people/ms/u-boot.git] / arch / ppc / include / asm / ptrace.h

#ifndef _PPC_PTRACE_H
#define _PPC_PTRACE_H

/*
 * This struct defines the way the registers are stored on the
 * kernel stack during a system call or other kernel entry.
 *
 * this should only contain volatile regs
 * since we can keep non-volatile in the thread_struct
 * should set this up when only volatiles are saved
 * by intr code.
 *
 * Since this is going on the stack, *CARE MUST BE TAKEN* to insure
 * that the overall structure is a multiple of 16 bytes in length.
 *
 * Note that the offsets of the fields in this struct correspond with
 * the PT_* values below.  This simplifies arch/ppc/kernel/ptrace.c.
 */

#include <linux/config.h>

#ifndef __ASSEMBLY__
#ifdef CONFIG_PPC64BRIDGE
#define PPC_REG unsigned long /*long*/
#else
#define PPC_REG unsigned long
#endif
struct pt_regs {
	PPC_REG gpr[32];
	PPC_REG nip;
	PPC_REG msr;
	PPC_REG orig_gpr3;	/* Used for restarting system calls */
	PPC_REG ctr;
	PPC_REG link;
	PPC_REG xer;
	PPC_REG ccr;
	PPC_REG mq;		/* 601 only (not used at present) */
				/* Used on APUS to hold IPL value. */
	PPC_REG trap;		/* Reason for being here */
	PPC_REG dar;		/* Fault registers */
	PPC_REG dsisr;
	PPC_REG result;		/* Result of a system call */
};
#endif

#define STACK_FRAME_OVERHEAD	16	/* size of minimum stack frame */

/* Size of stack frame allocated when calling signal handler. */
#define __SIGNAL_FRAMESIZE	64

#define instruction_pointer(regs) ((regs)->nip)
#define user_mode(regs) (((regs)->msr & MSR_PR) != 0)

/*
 * Offsets used by 'ptrace' system call interface.
 * These can't be changed without breaking binary compatibility
 * with MkLinux, etc.
 */
#define PT_R0	0
#define PT_R1	1
#define PT_R2	2
#define PT_R3	3
#define PT_R4	4
#define PT_R5	5
#define PT_R6	6
#define PT_R7	7
#define PT_R8	8
#define PT_R9	9
#define PT_R10	10
#define PT_R11	11
#define PT_R12	12
#define PT_R13	13
#define PT_R14	14
#define PT_R15	15
#define PT_R16	16
#define PT_R17	17
#define PT_R18	18
#define PT_R19	19
#define PT_R20	20
#define PT_R21	21
#define PT_R22	22
#define PT_R23	23
#define PT_R24	24
#define PT_R25	25
#define PT_R26	26
#define PT_R27	27
#define PT_R28	28
#define PT_R29	29
#define PT_R30	30
#define PT_R31	31

#define PT_NIP	32
#define PT_MSR	33
#ifdef __KERNEL__
#define PT_ORIG_R3 34
#endif
#define PT_CTR	35
#define PT_LNK	36
#define PT_XER	37
#define PT_CCR	38
#define PT_MQ	39

#define PT_FPR0	48	/* each FP reg occupies 2 slots in this space */
#define PT_FPR31 (PT_FPR0 + 2*31)
#define PT_FPSCR (PT_FPR0 + 2*32 + 1)

#endif
Commit	Line	Data
b15cbc0b WD	1	#ifndef _PPC_PTRACE_H
	2	#define _PPC_PTRACE_H
	3
	4	/*
	5	* This struct defines the way the registers are stored on the
	6	* kernel stack during a system call or other kernel entry.
	7	*
	8	* this should only contain volatile regs
	9	* since we can keep non-volatile in the thread_struct
	10	* should set this up when only volatiles are saved
	11	* by intr code.
	12	*
	13	* Since this is going on the stack, CARE MUST BE TAKEN to insure
	14	* that the overall structure is a multiple of 16 bytes in length.
	15	*
	16	* Note that the offsets of the fields in this struct correspond with
	17	* the PT_* values below. This simplifies arch/ppc/kernel/ptrace.c.
	18	*/
	19
	20	#include <linux/config.h>
	21
	22	#ifndef __ASSEMBLY__
	23	#ifdef CONFIG_PPC64BRIDGE
	24	#define PPC_REG unsigned long /long/
	25	#else
	26	#define PPC_REG unsigned long
	27	#endif
	28	struct pt_regs {
	29	PPC_REG gpr[32];
	30	PPC_REG nip;
	31	PPC_REG msr;
	32	PPC_REG orig_gpr3; /* Used for restarting system calls */
	33	PPC_REG ctr;
	34	PPC_REG link;
	35	PPC_REG xer;
	36	PPC_REG ccr;
	37	PPC_REG mq; /* 601 only (not used at present) */
	38	/* Used on APUS to hold IPL value. */
	39	PPC_REG trap; /* Reason for being here */
	40	PPC_REG dar; /* Fault registers */
	41	PPC_REG dsisr;
53677ef1	42	PPC_REG result; /* Result of a system call */
b15cbc0b WD	43	};
	44	#endif
	45
	46	#define STACK_FRAME_OVERHEAD 16 /* size of minimum stack frame */
	47
	48	/* Size of stack frame allocated when calling signal handler. */
	49	#define __SIGNAL_FRAMESIZE 64
	50
	51	#define instruction_pointer(regs) ((regs)->nip)
	52	#define user_mode(regs) (((regs)->msr & MSR_PR) != 0)
	53
	54	/*
	55	* Offsets used by 'ptrace' system call interface.
	56	* These can't be changed without breaking binary compatibility
	57	* with MkLinux, etc.
	58	*/
	59	#define PT_R0 0
	60	#define PT_R1 1
	61	#define PT_R2 2
	62	#define PT_R3 3
	63	#define PT_R4 4
	64	#define PT_R5 5
	65	#define PT_R6 6
	66	#define PT_R7 7
	67	#define PT_R8 8
	68	#define PT_R9 9
	69	#define PT_R10 10
	70	#define PT_R11 11
	71	#define PT_R12 12
	72	#define PT_R13 13
	73	#define PT_R14 14
	74	#define PT_R15 15
	75	#define PT_R16 16
	76	#define PT_R17 17
	77	#define PT_R18 18
	78	#define PT_R19 19
	79	#define PT_R20 20
	80	#define PT_R21 21
	81	#define PT_R22 22
	82	#define PT_R23 23
	83	#define PT_R24 24
	84	#define PT_R25 25
	85	#define PT_R26 26
	86	#define PT_R27 27
	87	#define PT_R28 28
	88	#define PT_R29 29
	89	#define PT_R30 30
	90	#define PT_R31 31
	91
	92	#define PT_NIP 32
	93	#define PT_MSR 33
	94	#ifdef __KERNEL__
	95	#define PT_ORIG_R3 34
	96	#endif
	97	#define PT_CTR 35
	98	#define PT_LNK 36
	99	#define PT_XER 37
	100	#define PT_CCR 38
	101	#define PT_MQ 39
	102
	103	#define PT_FPR0 48 /* each FP reg occupies 2 slots in this space */
	104	#define PT_FPR31 (PT_FPR0 + 2*31)
	105	#define PT_FPSCR (PT_FPR0 + 2*32 + 1)
	106
107	#endif