1 #ifndef __SPARC_PTRACE_H
2 #define __SPARC_PTRACE_H
4 #include <uapi/asm/ptrace.h>
6 #if defined(__sparc__) && defined(__arch64__)
9 #include <linux/threads.h>
10 #include <asm/switch_to.h>
12 static inline int pt_regs_trap_type(struct pt_regs *regs)
14 return regs->magic & 0x1ff;
17 static inline bool pt_regs_is_syscall(struct pt_regs *regs)
19 return (regs->tstate & TSTATE_SYSCALL);
22 static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
24 return (regs->tstate &= ~TSTATE_SYSCALL);
27 #define arch_ptrace_stop_needed(exit_code, info) \
28 ({ flush_user_windows(); \
29 get_thread_wsaved() != 0; \
32 #define arch_ptrace_stop(exit_code, info) \
33 synchronize_user_stack()
35 #define current_pt_regs() \
36 ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
38 struct global_reg_snapshot {
45 struct thread_info *thread;
49 struct global_pmu_snapshot {
54 union global_cpu_snapshot {
55 struct global_reg_snapshot reg;
56 struct global_pmu_snapshot pmu;
59 extern union global_cpu_snapshot global_cpu_snapshot[NR_CPUS];
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) do { \
65 (regs)->tpc = (val); \
66 (regs)->tnpc = (val)+4; \
68 #define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
69 static inline int is_syscall_success(struct pt_regs *regs)
71 return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
74 static inline long regs_return_value(struct pt_regs *regs)
76 return regs->u_regs[UREG_I0];
79 unsigned long profile_pc(struct pt_regs *);
81 #define profile_pc(regs) instruction_pointer(regs)
84 #define MAX_REG_OFFSET (offsetof(struct pt_regs, magic))
86 extern int regs_query_register_offset(const char *name);
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.
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,
98 static inline unsigned long regs_get_register(struct pt_regs *regs,
101 if (unlikely(offset >= MAX_REG_OFFSET))
103 if (offset == PT_V9_Y)
104 return *(unsigned int *)((unsigned long)regs + offset);
105 return *(unsigned long *)((unsigned long)regs + offset);
108 /* Valid only for Kernel mode traps. */
109 static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
111 return regs->u_regs[UREG_I6];
113 #else /* __ASSEMBLY__ */
114 #endif /* __ASSEMBLY__ */
115 #else /* (defined(__sparc__) && defined(__arch64__)) */
117 #include <asm/switch_to.h>
119 static inline bool pt_regs_is_syscall(struct pt_regs *regs)
121 return (regs->psr & PSR_SYSCALL);
124 static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
126 return (regs->psr &= ~PSR_SYSCALL);
129 #define arch_ptrace_stop_needed(exit_code, info) \
130 ({ flush_user_windows(); \
131 current_thread_info()->w_saved != 0; \
134 #define arch_ptrace_stop(exit_code, info) \
135 synchronize_user_stack()
137 #define current_pt_regs() \
138 ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
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 *);
144 #else /* (!__ASSEMBLY__) */
145 #endif /* (!__ASSEMBLY__) */
146 #endif /* (defined(__sparc__) && defined(__arch64__)) */
147 #define STACK_BIAS 2047
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
159 #endif /* !(__SPARC_PTRACE_H) */