LXR linux/arch/sparc/include/asm/ptrace.h

   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
  12static inline int pt_regs_trap_type(struct pt_regs *regs)
  13{
  14        return regs->magic & 0x1ff;
  15}
  16
  17static inline bool pt_regs_is_syscall(struct pt_regs *regs)
  18{
  19        return (regs->tstate & TSTATE_SYSCALL);
  20}
  21
  22static 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
  38struct 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
  49struct global_pmu_snapshot {
  50        unsigned long           pcr[4];
  51        unsigned long           pic[4];
  52};
  53
  54union global_cpu_snapshot {
  55        struct global_reg_snapshot      reg;
  56        struct global_pmu_snapshot      pmu;
  57};
  58
  59extern 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])
  66static inline int is_syscall_success(struct pt_regs *regs)
  67{
  68        return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
  69}
  70
  71static inline long regs_return_value(struct pt_regs *regs)
  72{
  73        return regs->u_regs[UREG_I0];
  74}
  75#ifdef CONFIG_SMP
  76unsigned 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
  86static inline bool pt_regs_is_syscall(struct pt_regs *regs)
  87{
  88        return (regs->psr & PSR_SYSCALL);
  89}
  90
  91static 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])
 110unsigned 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