[mirror_ubuntu-zesty-kernel.git] / arch / sparc / include / asm / ptrace.h

#ifndef __SPARC_PTRACE_H
#define __SPARC_PTRACE_H

#include <uapi/asm/ptrace.h>

#if defined(__sparc__) && defined(__arch64__)
#ifndef __ASSEMBLY__

#include <linux/threads.h>
#include <asm/switch_to.h>

static inline int pt_regs_trap_type(struct pt_regs *regs)
{
	return regs->magic & 0x1ff;
}

static inline bool pt_regs_is_syscall(struct pt_regs *regs)
{
	return (regs->tstate & TSTATE_SYSCALL);
}

static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
{
	return (regs->tstate &= ~TSTATE_SYSCALL);
}

#define arch_ptrace_stop_needed(exit_code, info) \
({	flush_user_windows(); \
	get_thread_wsaved() != 0; \
})

#define arch_ptrace_stop(exit_code, info) \
	synchronize_user_stack()

#define current_pt_regs() \
	((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)

struct global_reg_snapshot {
	unsigned long		tstate;
	unsigned long		tpc;
	unsigned long		tnpc;
	unsigned long		o7;
	unsigned long		i7;
	unsigned long		rpc;
	struct thread_info	*thread;
	unsigned long		pad1;
};

struct global_pmu_snapshot {
	unsigned long		pcr[4];
	unsigned long		pic[4];
};

union global_cpu_snapshot {
	struct global_reg_snapshot	reg;
	struct global_pmu_snapshot	pmu;
};

extern union global_cpu_snapshot global_cpu_snapshot[NR_CPUS];

#define force_successful_syscall_return() set_thread_noerror(1)
#define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
#define instruction_pointer(regs) ((regs)->tpc)
#define instruction_pointer_set(regs, val) do { \
		(regs)->tpc = (val); \
		(regs)->tnpc = (val)+4; \
	} while (0)
#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
static inline int is_syscall_success(struct pt_regs *regs)
{
	return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
}

static inline long regs_return_value(struct pt_regs *regs)
{
	return regs->u_regs[UREG_I0];
}
#ifdef CONFIG_SMP
unsigned long profile_pc(struct pt_regs *);
#else
#define profile_pc(regs) instruction_pointer(regs)
#endif

#define MAX_REG_OFFSET (offsetof(struct pt_regs, magic))

extern int regs_query_register_offset(const char *name);

/**
 * regs_get_register() - get register value from its offset
 * @regs:	pt_regs from which register value is gotten
 * @offset:	offset number of the register.
 *
 * regs_get_register returns the value of a register whose
 * offset from @regs. The @offset is the offset of the register
 * in struct pt_regs. If @offset is bigger than MAX_REG_OFFSET,
 * this returns 0.
 */
static inline unsigned long regs_get_register(struct pt_regs *regs,
					     unsigned long offset)
{
	if (unlikely(offset >= MAX_REG_OFFSET))
		return 0;
	if (offset == PT_V9_Y)
		return *(unsigned int *)((unsigned long)regs + offset);
	return *(unsigned long *)((unsigned long)regs + offset);
}

/* Valid only for Kernel mode traps. */
static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
{
	return regs->u_regs[UREG_I6];
}
#else /* __ASSEMBLY__ */
#endif /* __ASSEMBLY__ */
#else /* (defined(__sparc__) && defined(__arch64__)) */
#ifndef __ASSEMBLY__
#include <asm/switch_to.h>

static inline bool pt_regs_is_syscall(struct pt_regs *regs)
{
	return (regs->psr & PSR_SYSCALL);
}

static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
{
	return (regs->psr &= ~PSR_SYSCALL);
}

#define arch_ptrace_stop_needed(exit_code, info) \
({	flush_user_windows(); \
	current_thread_info()->w_saved != 0;	\
})

#define arch_ptrace_stop(exit_code, info) \
	synchronize_user_stack()

#define current_pt_regs() \
	((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)

#define user_mode(regs) (!((regs)->psr & PSR_PS))
#define instruction_pointer(regs) ((regs)->pc)
#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
unsigned long profile_pc(struct pt_regs *);
#else /* (!__ASSEMBLY__) */
#endif /* (!__ASSEMBLY__) */
#endif /* (defined(__sparc__) && defined(__arch64__)) */
#define STACK_BIAS		2047

/* global_reg_snapshot offsets */
#define GR_SNAP_TSTATE	0x00
#define GR_SNAP_TPC	0x08
#define GR_SNAP_TNPC	0x10
#define GR_SNAP_O7	0x18
#define GR_SNAP_I7	0x20
#define GR_SNAP_RPC	0x28
#define GR_SNAP_THREAD	0x30
#define GR_SNAP_PAD1	0x38

#endif /* !(__SPARC_PTRACE_H) */
Commit	Line	Data
f3ec38d5 SR	1	#ifndef __SPARC_PTRACE_H
	2	#define __SPARC_PTRACE_H
	3
54579826	4	#include <uapi/asm/ptrace.h>
f3ec38d5 SR	5
f3ec38d5 SR	6	#if defined(__sparc__) && defined(__arch64__)
f3ec38d5 SR	7	#ifndef __ASSEMBLY__
f3ec38d5 SR	8
f3ec38d5	9	#include <linux/threads.h>
7f55ba9c	10	#include <asm/switch_to.h>
f3ec38d5 SR	11
	12	static inline int pt_regs_trap_type(struct pt_regs *regs)
	13	{
	14	return regs->magic & 0x1ff;
	15	}
	16
	17	static inline bool pt_regs_is_syscall(struct pt_regs *regs)
	18	{
	19	return (regs->tstate & TSTATE_SYSCALL);
	20	}
	21
	22	static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
	23	{
	24	return (regs->tstate &= ~TSTATE_SYSCALL);
	25	}
	26
	27	#define arch_ptrace_stop_needed(exit_code, info) \
	28	({ flush_user_windows(); \
	29	get_thread_wsaved() != 0; \
	30	})
	31
	32	#define arch_ptrace_stop(exit_code, info) \
	33	synchronize_user_stack()
	34
1918c7f5 AV	35	#define current_pt_regs() \
	36	((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
	37
f3ec38d5 SR	38	struct global_reg_snapshot {
	39	unsigned long tstate;
	40	unsigned long tpc;
	41	unsigned long tnpc;
	42	unsigned long o7;
	43	unsigned long i7;
	44	unsigned long rpc;
	45	struct thread_info *thread;
	46	unsigned long pad1;
	47	};
916ca14a DM	48
	49	struct global_pmu_snapshot {
	50	unsigned long pcr[4];
	51	unsigned long pic[4];
	52	};
	53
	54	union global_cpu_snapshot {
	55	struct global_reg_snapshot reg;
	56	struct global_pmu_snapshot pmu;
	57	};
	58
	59	extern union global_cpu_snapshot global_cpu_snapshot[NR_CPUS];
f3ec38d5	60
dff933da	61	#define force_successful_syscall_return() set_thread_noerror(1)
f3ec38d5 SR	62	#define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
f3ec38d5 SR	63	#define instruction_pointer(regs) ((regs)->tpc)
e8f4aa60 AP	64	#define instruction_pointer_set(regs, val) do { \
	65	(regs)->tpc = (val); \
	66	(regs)->tnpc = (val)+4; \
	67	} while (0)
f3ec38d5	68	#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
d7e7528b EP	69	static inline int is_syscall_success(struct pt_regs *regs)
	70	{
	71	return !(regs->tstate & (TSTATE_XCARRY \| TSTATE_ICARRY));
	72	}
	73
	74	static inline long regs_return_value(struct pt_regs *regs)
	75	{
	76	return regs->u_regs[UREG_I0];
	77	}
f3ec38d5	78	#ifdef CONFIG_SMP
f05a6865	79	unsigned long profile_pc(struct pt_regs *);
f3ec38d5 SR	80	#else
f3ec38d5 SR	81	#define profile_pc(regs) instruction_pointer(regs)
1da177e4	82	#endif
e8f4aa60 AP	83
	84	#define MAX_REG_OFFSET (offsetof(struct pt_regs, magic))
	85
	86	extern int regs_query_register_offset(const char *name);
	87
	88	/**
	89	* regs_get_register() - get register value from its offset
	90	* @regs: pt_regs from which register value is gotten
	91	* @offset: offset number of the register.
	92	*
	93	* regs_get_register returns the value of a register whose
	94	* offset from @regs. The @offset is the offset of the register
	95	* in struct pt_regs. If @offset is bigger than MAX_REG_OFFSET,
	96	* this returns 0.
	97	*/
	98	static inline unsigned long regs_get_register(struct pt_regs *regs,
	99	unsigned long offset)
	100	{
	101	if (unlikely(offset >= MAX_REG_OFFSET))
	102	return 0;
	103	if (offset == PT_V9_Y)
	104	return (unsigned int )((unsigned long)regs + offset);
	105	return (unsigned long )((unsigned long)regs + offset);
	106	}
	107
	108	/* Valid only for Kernel mode traps. */
	109	static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
	110	{
	111	return regs->u_regs[UREG_I6];
	112	}
f3ec38d5	113	#else /* __ASSEMBLY__ */
f3ec38d5	114	#endif /* __ASSEMBLY__ */
f3ec38d5	115	#else /* (defined(__sparc__) && defined(__arch64__)) */
f3ec38d5	116	#ifndef __ASSEMBLY__
bde4d8b2	117	#include <asm/switch_to.h>
f3ec38d5	118
f3ec38d5 SR	119	static inline bool pt_regs_is_syscall(struct pt_regs *regs)
	120	{
	121	return (regs->psr & PSR_SYSCALL);
	122	}
	123
	124	static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
	125	{
	126	return (regs->psr &= ~PSR_SYSCALL);
	127	}
	128
	129	#define arch_ptrace_stop_needed(exit_code, info) \
	130	({ flush_user_windows(); \
	131	current_thread_info()->w_saved != 0; \
	132	})
	133
	134	#define arch_ptrace_stop(exit_code, info) \
	135	synchronize_user_stack()
	136
ab348681 AV	137	#define current_pt_regs() \
	138	((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
	139
f3ec38d5 SR	140	#define user_mode(regs) (!((regs)->psr & PSR_PS))
	141	#define instruction_pointer(regs) ((regs)->pc)
	142	#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
	143	unsigned long profile_pc(struct pt_regs *);
f3ec38d5	144	#else /* (!__ASSEMBLY__) */
f3ec38d5	145	#endif /* (!__ASSEMBLY__) */
f3ec38d5	146	#endif /* (defined(__sparc__) && defined(__arch64__)) */
f3ec38d5	147	#define STACK_BIAS 2047
f3ec38d5 SR	148
	149	/* global_reg_snapshot offsets */
	150	#define GR_SNAP_TSTATE 0x00
	151	#define GR_SNAP_TPC 0x08
	152	#define GR_SNAP_TNPC 0x10
	153	#define GR_SNAP_O7 0x18
	154	#define GR_SNAP_I7 0x20
	155	#define GR_SNAP_RPC 0x28
	156	#define GR_SNAP_THREAD 0x30
	157	#define GR_SNAP_PAD1 0x38
	158
f3ec38d5	159	#endif /* !(__SPARC_PTRACE_H) */