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