1#ifndef __SPARC_PTRACE_H
2#define __SPARC_PTRACE_H
3
4#include <uapi/asm/ptrace.h>
5
6#if defined(__sparc__) && defined(__arch64__)
7#ifndef __ASSEMBLY__
8
9#include <linux/threads.h>
10#include <asm/switch_to.h>
11
12static inline int pt_regs_trap_type(struct pt_regs *regs)
13{
14	return regs->magic & 0x1ff;
15}
16
17static inline bool pt_regs_is_syscall(struct pt_regs *regs)
18{
19	return (regs->tstate & TSTATE_SYSCALL);
20}
21
22static 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
35#define current_pt_regs() \
36	((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
37
38struct 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};
48
49struct global_pmu_snapshot {
50	unsigned long		pcr[4];
51	unsigned long		pic[4];
52};
53
54union global_cpu_snapshot {
55	struct global_reg_snapshot	reg;
56	struct global_pmu_snapshot	pmu;
57};
58
59extern union global_cpu_snapshot global_cpu_snapshot[NR_CPUS];
60
61#define force_successful_syscall_return() set_thread_noerror(1)
62#define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
63#define instruction_pointer(regs) ((regs)->tpc)
64#define instruction_pointer_set(regs, val) ((regs)->tpc = (val))
65#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
66static inline int is_syscall_success(struct pt_regs *regs)
67{
68	return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
69}
70
71static inline long regs_return_value(struct pt_regs *regs)
72{
73	return regs->u_regs[UREG_I0];
74}
75#ifdef CONFIG_SMP
76unsigned long profile_pc(struct pt_regs *);
77#else
78#define profile_pc(regs) instruction_pointer(regs)
79#endif
80#else /* __ASSEMBLY__ */
81#endif /* __ASSEMBLY__ */
82#else /* (defined(__sparc__) && defined(__arch64__)) */
83#ifndef __ASSEMBLY__
84#include <asm/switch_to.h>
85
86static inline bool pt_regs_is_syscall(struct pt_regs *regs)
87{
88	return (regs->psr & PSR_SYSCALL);
89}
90
91static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
92{
93	return (regs->psr &= ~PSR_SYSCALL);
94}
95
96#define arch_ptrace_stop_needed(exit_code, info) \
97({	flush_user_windows(); \
98	current_thread_info()->w_saved != 0;	\
99})
100
101#define arch_ptrace_stop(exit_code, info) \
102	synchronize_user_stack()
103
104#define current_pt_regs() \
105	((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
106
107#define user_mode(regs) (!((regs)->psr & PSR_PS))
108#define instruction_pointer(regs) ((regs)->pc)
109#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
110unsigned long profile_pc(struct pt_regs *);
111#else /* (!__ASSEMBLY__) */
112#endif /* (!__ASSEMBLY__) */
113#endif /* (defined(__sparc__) && defined(__arch64__)) */
114#define STACK_BIAS		2047
115
116/* global_reg_snapshot offsets */
117#define GR_SNAP_TSTATE	0x00
118#define GR_SNAP_TPC	0x08
119#define GR_SNAP_TNPC	0x10
120#define GR_SNAP_O7	0x18
121#define GR_SNAP_I7	0x20
122#define GR_SNAP_RPC	0x28
123#define GR_SNAP_THREAD	0x30
124#define GR_SNAP_PAD1	0x38
125
126#endif /* !(__SPARC_PTRACE_H) */
127