[linux-2.6-block.git] / arch / blackfin / include / asm / ptrace.h

/*
 * Copyright 2004-2008 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */

#ifndef _BFIN_PTRACE_H
#define _BFIN_PTRACE_H

/*
 * GCC defines register number like this:
 * -----------------------------
 *       0 - 7 are data registers R0-R7
 *       8 - 15 are address registers P0-P7
 *      16 - 31 dsp registers I/B/L0 -- I/B/L3 & M0--M3
 *      32 - 33 A registers A0 & A1
 *      34 -    status register
 * -----------------------------
 *
 * We follows above, except:
 *      32-33 --- Low 32-bit of A0&1
 *      34-35 --- High 8-bit of A0&1
 */

#ifndef __ASSEMBLY__

struct task_struct;

/* this struct defines the way the registers are stored on the
   stack during a system call. */

struct pt_regs {
	long orig_pc;
	long ipend;
	long seqstat;
	long rete;
	long retn;
	long retx;
	long pc;		/* PC == RETI */
	long rets;
	long reserved;		/* Used as scratch during system calls */
	long astat;
	long lb1;
	long lb0;
	long lt1;
	long lt0;
	long lc1;
	long lc0;
	long a1w;
	long a1x;
	long a0w;
	long a0x;
	long b3;
	long b2;
	long b1;
	long b0;
	long l3;
	long l2;
	long l1;
	long l0;
	long m3;
	long m2;
	long m1;
	long m0;
	long i3;
	long i2;
	long i1;
	long i0;
	long usp;
	long fp;
	long p5;
	long p4;
	long p3;
	long p2;
	long p1;
	long p0;
	long r7;
	long r6;
	long r5;
	long r4;
	long r3;
	long r2;
	long r1;
	long r0;
	long orig_r0;
	long orig_p0;
	long syscfg;
};

/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
#define PTRACE_GETREGS            12
#define PTRACE_SETREGS            13	/* ptrace signal  */

#define PTRACE_GETFDPIC           31	/* get the ELF fdpic loadmap address */
#define PTRACE_GETFDPIC_EXEC       0	/* [addr] request the executable loadmap */
#define PTRACE_GETFDPIC_INTERP     1	/* [addr] request the interpreter loadmap */

#define PS_S  (0x0002)

#ifdef __KERNEL__

/* user_mode returns true if only one bit is set in IPEND, other than the
   master interrupt enable.  */
#define user_mode(regs) (!(((regs)->ipend & ~0x10) & (((regs)->ipend & ~0x10) - 1)))
#define instruction_pointer(regs) ((regs)->pc)
#define user_stack_pointer(regs)  ((regs)->usp)
#define profile_pc(regs) instruction_pointer(regs)
extern void show_regs(struct pt_regs *);

#define arch_has_single_step()	(1)
extern void user_enable_single_step(struct task_struct *child);
extern void user_disable_single_step(struct task_struct *child);
/* common code demands this function */
#define ptrace_disable(child) user_disable_single_step(child)

/*
 * Get the address of the live pt_regs for the specified task.
 * These are saved onto the top kernel stack when the process
 * is not running.
 *
 * Note: if a user thread is execve'd from kernel space, the
 * kernel stack will not be empty on entry to the kernel, so
 * ptracing these tasks will fail.
 */
#define task_pt_regs(task) \
	(struct pt_regs *) \
	    ((unsigned long)task_stack_page(task) + \
	     (THREAD_SIZE - sizeof(struct pt_regs)))

#endif  /*  __KERNEL__  */

#endif				/* __ASSEMBLY__ */

/*
 * Offsets used by 'ptrace' system call interface.
 */

#define PT_R0 204
#define PT_R1 200
#define PT_R2 196
#define PT_R3 192
#define PT_R4 188
#define PT_R5 184
#define PT_R6 180
#define PT_R7 176
#define PT_P0 172
#define PT_P1 168
#define PT_P2 164
#define PT_P3 160
#define PT_P4 156
#define PT_P5 152
#define PT_FP 148
#define PT_USP 144
#define PT_I0 140
#define PT_I1 136
#define PT_I2 132
#define PT_I3 128
#define PT_M0 124
#define PT_M1 120
#define PT_M2 116
#define PT_M3 112
#define PT_L0 108
#define PT_L1 104
#define PT_L2 100
#define PT_L3 96
#define PT_B0 92
#define PT_B1 88
#define PT_B2 84
#define PT_B3 80
#define PT_A0X 76
#define PT_A0W 72
#define PT_A1X 68
#define PT_A1W 64
#define PT_LC0 60
#define PT_LC1 56
#define PT_LT0 52
#define PT_LT1 48
#define PT_LB0 44
#define PT_LB1 40
#define PT_ASTAT 36
#define PT_RESERVED 32
#define PT_RETS 28
#define PT_PC 24
#define PT_RETX 20
#define PT_RETN 16
#define PT_RETE 12
#define PT_SEQSTAT 8
#define PT_IPEND 4

#define PT_ORIG_R0 208
#define PT_ORIG_P0 212
#define PT_SYSCFG 216
#define PT_TEXT_ADDR 220
#define PT_TEXT_END_ADDR 224
#define PT_DATA_ADDR 228
#define PT_FDPIC_EXEC 232
#define PT_FDPIC_INTERP 236

#define PT_LAST_PSEUDO PT_FDPIC_INTERP

#endif				/* _BFIN_PTRACE_H */
Commit	Line	Data
96f1050d RG	1	/*
	2	* Copyright 2004-2008 Analog Devices Inc.
	3	*
	4	* Licensed under the GPL-2 or later.
	5	*/
	6
1394f032 BW	7	#ifndef _BFIN_PTRACE_H
	8	#define _BFIN_PTRACE_H
	9
	10	/*
	11	* GCC defines register number like this:
	12	* -----------------------------
	13	* 0 - 7 are data registers R0-R7
	14	* 8 - 15 are address registers P0-P7
	15	* 16 - 31 dsp registers I/B/L0 -- I/B/L3 & M0--M3
	16	* 32 - 33 A registers A0 & A1
	17	* 34 - status register
	18	* -----------------------------
	19	*
	20	* We follows above, except:
	21	* 32-33 --- Low 32-bit of A0&1
	22	* 34-35 --- High 8-bit of A0&1
	23	*/
	24
	25	#ifndef __ASSEMBLY__
	26
e8f263df MF	27	struct task_struct;
e8f263df MF	28
1394f032 BW	29	/* this struct defines the way the registers are stored on the
	30	stack during a system call. */
	31
	32	struct pt_regs {
	33	long orig_pc;
	34	long ipend;
	35	long seqstat;
	36	long rete;
	37	long retn;
	38	long retx;
	39	long pc; /* PC == RETI */
	40	long rets;
	41	long reserved; /* Used as scratch during system calls */
	42	long astat;
	43	long lb1;
	44	long lb0;
	45	long lt1;
	46	long lt0;
	47	long lc1;
	48	long lc0;
	49	long a1w;
	50	long a1x;
	51	long a0w;
	52	long a0x;
	53	long b3;
	54	long b2;
	55	long b1;
	56	long b0;
	57	long l3;
	58	long l2;
	59	long l1;
	60	long l0;
	61	long m3;
	62	long m2;
	63	long m1;
	64	long m0;
	65	long i3;
	66	long i2;
	67	long i1;
	68	long i0;
	69	long usp;
	70	long fp;
	71	long p5;
	72	long p4;
	73	long p3;
	74	long p2;
	75	long p1;
	76	long p0;
	77	long r7;
	78	long r6;
	79	long r5;
	80	long r4;
	81	long r3;
	82	long r2;
	83	long r1;
	84	long r0;
	85	long orig_r0;
	86	long orig_p0;
	87	long syscfg;
	88	};
	89
	90	/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
	91	#define PTRACE_GETREGS 12
	92	#define PTRACE_SETREGS 13 /* ptrace signal */
93
ee377336 MF	94	#define PTRACE_GETFDPIC 31 /* get the ELF fdpic loadmap address */
	95	#define PTRACE_GETFDPIC_EXEC 0 /* [addr] request the executable loadmap */
	96	#define PTRACE_GETFDPIC_INTERP 1 /* [addr] request the interpreter loadmap */
1394f032 BW	97
	98	#define PS_S (0x0002)
	99
f22ab814 AB	100	#ifdef __KERNEL__
f22ab814 AB	101
1394f032 BW	102	/* user_mode returns true if only one bit is set in IPEND, other than the
	103	master interrupt enable. */
	104	#define user_mode(regs) (!(((regs)->ipend & ~0x10) & (((regs)->ipend & ~0x10) - 1)))
	105	#define instruction_pointer(regs) ((regs)->pc)
e8f263df	106	#define user_stack_pointer(regs) ((regs)->usp)
1394f032 BW	107	#define profile_pc(regs) instruction_pointer(regs)
	108	extern void show_regs(struct pt_regs *);
	109
e8f263df MF	110	#define arch_has_single_step() (1)
	111	extern void user_enable_single_step(struct task_struct *child);
	112	extern void user_disable_single_step(struct task_struct *child);
	113	/* common code demands this function */
	114	#define ptrace_disable(child) user_disable_single_step(child)
	115
	116	/*
	117	* Get the address of the live pt_regs for the specified task.
	118	* These are saved onto the top kernel stack when the process
	119	* is not running.
	120	*
	121	* Note: if a user thread is execve'd from kernel space, the
	122	* kernel stack will not be empty on entry to the kernel, so
	123	* ptracing these tasks will fail.
	124	*/
	125	#define task_pt_regs(task) \
	126	(struct pt_regs *) \
	127	((unsigned long)task_stack_page(task) + \
	128	(THREAD_SIZE - sizeof(struct pt_regs)))
	129
f22ab814 AB	130	#endif /* __KERNEL__ */
f22ab814 AB	131
1394f032 BW	132	#endif /* __ASSEMBLY__ */
	133
	134	/*
	135	* Offsets used by 'ptrace' system call interface.
	136	*/
	137
	138	#define PT_R0 204
	139	#define PT_R1 200
	140	#define PT_R2 196
	141	#define PT_R3 192
	142	#define PT_R4 188
	143	#define PT_R5 184
	144	#define PT_R6 180
	145	#define PT_R7 176
	146	#define PT_P0 172
	147	#define PT_P1 168
	148	#define PT_P2 164
	149	#define PT_P3 160
	150	#define PT_P4 156
	151	#define PT_P5 152
	152	#define PT_FP 148
	153	#define PT_USP 144
	154	#define PT_I0 140
	155	#define PT_I1 136
	156	#define PT_I2 132
	157	#define PT_I3 128
	158	#define PT_M0 124
	159	#define PT_M1 120
	160	#define PT_M2 116
	161	#define PT_M3 112
	162	#define PT_L0 108
	163	#define PT_L1 104
	164	#define PT_L2 100
	165	#define PT_L3 96
	166	#define PT_B0 92
	167	#define PT_B1 88
	168	#define PT_B2 84
	169	#define PT_B3 80
	170	#define PT_A0X 76
	171	#define PT_A0W 72
	172	#define PT_A1X 68
	173	#define PT_A1W 64
	174	#define PT_LC0 60
	175	#define PT_LC1 56
	176	#define PT_LT0 52
	177	#define PT_LT1 48
	178	#define PT_LB0 44
	179	#define PT_LB1 40
	180	#define PT_ASTAT 36
	181	#define PT_RESERVED 32
	182	#define PT_RETS 28
	183	#define PT_PC 24
	184	#define PT_RETX 20
	185	#define PT_RETN 16
	186	#define PT_RETE 12
	187	#define PT_SEQSTAT 8
	188	#define PT_IPEND 4
	189
f5a817e3 MF	190	#define PT_ORIG_R0 208
f5a817e3 MF	191	#define PT_ORIG_P0 212
1394f032 BW	192	#define PT_SYSCFG 216
	193	#define PT_TEXT_ADDR 220
	194	#define PT_TEXT_END_ADDR 224
	195	#define PT_DATA_ADDR 228
	196	#define PT_FDPIC_EXEC 232
	197	#define PT_FDPIC_INTERP 236
	198
f2ce4802 MF	199	#define PT_LAST_PSEUDO PT_FDPIC_INTERP
f2ce4802 MF	200
1394f032	201	#endif /* _BFIN_PTRACE_H */