| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 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) */ |