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 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 35 #define current_pt_regs() \ 36 ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1) 37 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 }; 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]; 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]) 66 static inline int is_syscall_success(struct pt_regs *regs) 67 { 68 return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY)); 69 } 70 71 static inline long regs_return_value(struct pt_regs *regs) 72 { 73 return regs->u_regs[UREG_I0]; 74 } 75 #ifdef CONFIG_SMP 76 unsigned 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 86 static inline bool pt_regs_is_syscall(struct pt_regs *regs) 87 { 88 return (regs->psr & PSR_SYSCALL); 89 } 90 91 static 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]) 110 unsigned 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