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arch/hexagon/include/asm/syscall.h 1.14 KB
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  /* SPDX-License-Identifier: GPL-2.0-only */
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  /*
   * Syscall support for the Hexagon architecture
   *
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   * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
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   */
  
  #ifndef _ASM_HEXAGON_SYSCALL_H
  #define _ASM_HEXAGON_SYSCALL_H
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  #include <uapi/linux/audit.h>
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  #include <linux/err.h>
  #include <asm/ptrace.h>
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  typedef long (*syscall_fn)(unsigned long, unsigned long,
  	unsigned long, unsigned long,
  	unsigned long, unsigned long);
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  #include <asm-generic/syscalls.h>
  
  extern void *sys_call_table[];
  
  static inline long syscall_get_nr(struct task_struct *task,
  				  struct pt_regs *regs)
  {
  	return regs->r06;
  }
  
  static inline void syscall_get_arguments(struct task_struct *task,
  					 struct pt_regs *regs,
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  					 unsigned long *args)
  {
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  	memcpy(args, &(&regs->r00)[0], 6 * sizeof(args[0]));
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  }
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  static inline long syscall_get_error(struct task_struct *task,
  				     struct pt_regs *regs)
  {
  	return IS_ERR_VALUE(regs->r00) ? regs->r00 : 0;
  }
  
  static inline long syscall_get_return_value(struct task_struct *task,
  					    struct pt_regs *regs)
  {
  	return regs->r00;
  }
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  static inline int syscall_get_arch(struct task_struct *task)
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  {
  	return AUDIT_ARCH_HEXAGON;
  }
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  #endif