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 struct global_reg_snapshot { 36 unsigned long tstate; 37 unsigned long tpc; 38 unsigned long tnpc; 39 unsigned long o7; 40 unsigned long i7; 41 unsigned long rpc; 42 struct thread_info *thread; 43 unsigned long pad1; 44 }; 45 46 struct global_pmu_snapshot { 47 unsigned long pcr[4]; 48 unsigned long pic[4]; 49 }; 50 51 union global_cpu_snapshot { 52 struct global_reg_snapshot reg; 53 struct global_pmu_snapshot pmu; 54 }; 55 56 extern union global_cpu_snapshot global_cpu_snapshot[NR_CPUS]; 57 58 #define force_successful_syscall_return() \ 59 do { current_thread_info()->syscall_noerror = 1; \ 60 } while (0) 61 #define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV)) 62 #define instruction_pointer(regs) ((regs)->tpc) 63 #define instruction_pointer_set(regs, val) ((regs)->tpc = (val)) 64 #define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP]) 65 static inline int is_syscall_success(struct pt_regs *regs) 66 { 67 return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY)); 68 } 69 70 static inline long regs_return_value(struct pt_regs *regs) 71 { 72 return regs->u_regs[UREG_I0]; 73 } 74 #ifdef CONFIG_SMP 75 extern unsigned long profile_pc(struct pt_regs *); 76 #else 77 #define profile_pc(regs) instruction_pointer(regs) 78 #endif 79 #else /* __ASSEMBLY__ */ 80 #endif /* __ASSEMBLY__ */ 81 #else /* (defined(__sparc__) && defined(__arch64__)) */ 82 #ifndef __ASSEMBLY__ 83 #include <asm/switch_to.h> 84 85 static inline bool pt_regs_is_syscall(struct pt_regs *regs) 86 { 87 return (regs->psr & PSR_SYSCALL); 88 } 89 90 static inline bool pt_regs_clear_syscall(struct pt_regs *regs) 91 { 92 return (regs->psr &= ~PSR_SYSCALL); 93 } 94 95 #define arch_ptrace_stop_needed(exit_code, info) \ 96 ({ flush_user_windows(); \ 97 current_thread_info()->w_saved != 0; \ 98 }) 99 100 #define arch_ptrace_stop(exit_code, info) \ 101 synchronize_user_stack() 102 103 #define user_mode(regs) (!((regs)->psr & PSR_PS)) 104 #define instruction_pointer(regs) ((regs)->pc) 105 #define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP]) 106 unsigned long profile_pc(struct pt_regs *); 107 #else /* (!__ASSEMBLY__) */ 108 #endif /* (!__ASSEMBLY__) */ 109 #endif /* (defined(__sparc__) && defined(__arch64__)) */ 110 #define STACK_BIAS 2047 111 112 /* global_reg_snapshot offsets */ 113 #define GR_SNAP_TSTATE 0x00 114 #define GR_SNAP_TPC 0x08 115 #define GR_SNAP_TNPC 0x10 116 #define GR_SNAP_O7 0x18 117 #define GR_SNAP_I7 0x20 118 #define GR_SNAP_RPC 0x28 119 #define GR_SNAP_THREAD 0x30 120 #define GR_SNAP_PAD1 0x38 121 122 #endif /* !(__SPARC_PTRACE_H) */ 123