85910c202b
Backmerge from the point in mainline where a trivial conflict had been introduced (arch/sparc/kernel/sys_sparc_64.c had grown sys_kern_features() right after where kernel_execve() used to be) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
126 lines
3.1 KiB
C
126 lines
3.1 KiB
C
#ifndef __SPARC_PTRACE_H
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#define __SPARC_PTRACE_H
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#include <uapi/asm/ptrace.h>
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#if defined(__sparc__) && defined(__arch64__)
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#ifndef __ASSEMBLY__
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#include <linux/threads.h>
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#include <asm/switch_to.h>
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static inline int pt_regs_trap_type(struct pt_regs *regs)
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{
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return regs->magic & 0x1ff;
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}
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static inline bool pt_regs_is_syscall(struct pt_regs *regs)
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{
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return (regs->tstate & TSTATE_SYSCALL);
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}
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static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
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{
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return (regs->tstate &= ~TSTATE_SYSCALL);
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}
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#define arch_ptrace_stop_needed(exit_code, info) \
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({ flush_user_windows(); \
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get_thread_wsaved() != 0; \
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})
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#define arch_ptrace_stop(exit_code, info) \
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synchronize_user_stack()
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#define current_pt_regs() \
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((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
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struct global_reg_snapshot {
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unsigned long tstate;
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unsigned long tpc;
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unsigned long tnpc;
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unsigned long o7;
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unsigned long i7;
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unsigned long rpc;
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struct thread_info *thread;
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unsigned long pad1;
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};
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struct global_pmu_snapshot {
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unsigned long pcr[4];
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unsigned long pic[4];
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};
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union global_cpu_snapshot {
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struct global_reg_snapshot reg;
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struct global_pmu_snapshot pmu;
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};
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extern union global_cpu_snapshot global_cpu_snapshot[NR_CPUS];
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#define force_successful_syscall_return() set_thread_noerror(1)
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#define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
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#define instruction_pointer(regs) ((regs)->tpc)
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#define instruction_pointer_set(regs, val) ((regs)->tpc = (val))
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#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
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static inline int is_syscall_success(struct pt_regs *regs)
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{
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return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
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}
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static inline long regs_return_value(struct pt_regs *regs)
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{
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return regs->u_regs[UREG_I0];
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}
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#ifdef CONFIG_SMP
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extern unsigned long profile_pc(struct pt_regs *);
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#else
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#define profile_pc(regs) instruction_pointer(regs)
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#endif
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#else /* __ASSEMBLY__ */
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#endif /* __ASSEMBLY__ */
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#else /* (defined(__sparc__) && defined(__arch64__)) */
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#ifndef __ASSEMBLY__
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#include <asm/switch_to.h>
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static inline bool pt_regs_is_syscall(struct pt_regs *regs)
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{
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return (regs->psr & PSR_SYSCALL);
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}
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static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
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{
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return (regs->psr &= ~PSR_SYSCALL);
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}
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#define arch_ptrace_stop_needed(exit_code, info) \
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({ flush_user_windows(); \
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current_thread_info()->w_saved != 0; \
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})
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#define arch_ptrace_stop(exit_code, info) \
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synchronize_user_stack()
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#define current_pt_regs() \
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((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
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#define user_mode(regs) (!((regs)->psr & PSR_PS))
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#define instruction_pointer(regs) ((regs)->pc)
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#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
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unsigned long profile_pc(struct pt_regs *);
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#else /* (!__ASSEMBLY__) */
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#endif /* (!__ASSEMBLY__) */
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#endif /* (defined(__sparc__) && defined(__arch64__)) */
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#define STACK_BIAS 2047
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/* global_reg_snapshot offsets */
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#define GR_SNAP_TSTATE 0x00
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#define GR_SNAP_TPC 0x08
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#define GR_SNAP_TNPC 0x10
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#define GR_SNAP_O7 0x18
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#define GR_SNAP_I7 0x20
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#define GR_SNAP_RPC 0x28
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#define GR_SNAP_THREAD 0x30
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#define GR_SNAP_PAD1 0x38
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#endif /* !(__SPARC_PTRACE_H) */
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