ptrace.h

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#ifndef __SPARC_PTRACE_H
#define __SPARC_PTRACE_H

#include <uapi/asm/ptrace.h>

#if defined(__sparc__) && defined(__arch64__)
#ifndef __ASSEMBLY__

#include <linux/threads.h>
#include <asm/switch_to.h>

static inline int pt_regs_trap_type(struct pt_regs *regs)
{
    return regs->magic & 0x1ff;
}

static inline bool pt_regs_is_syscall(struct pt_regs *regs)
{
    return (regs->tstate & TSTATE_SYSCALL);
}

static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
{
    return (regs->tstate &= ~TSTATE_SYSCALL);
}

#define arch_ptrace_stop_needed(exit_code, info) \
({  flush_user_windows(); \
    get_thread_wsaved() != 0; \
})

#define arch_ptrace_stop(exit_code, info) \
    synchronize_user_stack()

struct global_reg_snapshot {
    unsigned long       tstate;
    unsigned long       tpc;
    unsigned long       tnpc;
    unsigned long       o7;
    unsigned long       i7;
    unsigned long       rpc;
    struct thread_info  *thread;
    unsigned long       pad1;
};

struct global_pmu_snapshot {
    unsigned long       pcr[4];
    unsigned long       pic[4];
};

union global_cpu_snapshot {
    struct global_reg_snapshot  reg;
    struct global_pmu_snapshot  pmu;
};

extern union global_cpu_snapshot global_cpu_snapshot[NR_CPUS];

#define force_successful_syscall_return()       \
do {    current_thread_info()->syscall_noerror = 1; \
} while (0)
#define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
#define instruction_pointer(regs) ((regs)->tpc)
#define instruction_pointer_set(regs, val) ((regs)->tpc = (val))
#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
static inline int is_syscall_success(struct pt_regs *regs)
{
    return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
}

static inline long regs_return_value(struct pt_regs *regs)
{
    return regs->u_regs[UREG_I0];
}
#ifdef CONFIG_SMP
extern unsigned long profile_pc(struct pt_regs *);
#else
#define profile_pc(regs) instruction_pointer(regs)
#endif
#else /* __ASSEMBLY__ */
#endif /* __ASSEMBLY__ */
#else /* (defined(__sparc__) && defined(__arch64__)) */
#ifndef __ASSEMBLY__
#include <asm/switch_to.h>

static inline bool pt_regs_is_syscall(struct pt_regs *regs)
{
    return (regs->psr & PSR_SYSCALL);
}

static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
{
    return (regs->psr &= ~PSR_SYSCALL);
}

#define arch_ptrace_stop_needed(exit_code, info) \
({  flush_user_windows(); \
    current_thread_info()->w_saved != 0;    \
})

#define arch_ptrace_stop(exit_code, info) \
    synchronize_user_stack()

#define user_mode(regs) (!((regs)->psr & PSR_PS))
#define instruction_pointer(regs) ((regs)->pc)
#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
unsigned long profile_pc(struct pt_regs *);
#else /* (!__ASSEMBLY__) */
#endif /* (!__ASSEMBLY__) */
#endif /* (defined(__sparc__) && defined(__arch64__)) */
#define STACK_BIAS      2047

/* global_reg_snapshot offsets */
#define GR_SNAP_TSTATE  0x00
#define GR_SNAP_TPC 0x08
#define GR_SNAP_TNPC    0x10
#define GR_SNAP_O7  0x18
#define GR_SNAP_I7  0x20
#define GR_SNAP_RPC 0x28
#define GR_SNAP_THREAD  0x30
#define GR_SNAP_PAD1    0x38

#endif /* !(__SPARC_PTRACE_H) */