/*
   * linux/arch/h8300/kernel/sys_h8300.c
   *
   * This file contains various random system calls that
   * have a non-standard calling sequence on the H8/300
   * platform.
   */
  
  #include <linux/errno.h>
  #include <linux/sched.h>
  #include <linux/mm.h>
  #include <linux/smp.h>

  #include <linux/sem.h>
  #include <linux/msg.h>
  #include <linux/shm.h>
  #include <linux/stat.h>
  #include <linux/syscalls.h>
  #include <linux/mman.h>
  #include <linux/file.h>

  #include <linux/fs.h>

  #include <linux/ipc.h>

  
  #include <asm/setup.h>
  #include <asm/uaccess.h>
  #include <asm/cachectl.h>
  #include <asm/traps.h>

  #include <asm/unistd.h>

  /* sys_cacheflush -- no support.  */
  asmlinkage int
  sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)
  {
  	return -EINVAL;
  }
  
  asmlinkage int sys_getpagesize(void)
  {
  	return PAGE_SIZE;
  }
  
  #if defined(CONFIG_SYSCALL_PRINT)
  asmlinkage void syscall_print(void *dummy,...)
  {
  	struct pt_regs *regs = (struct pt_regs *) ((unsigned char *)&dummy-4);
  	printk("call %06lx:%ld 1:%08lx,2:%08lx,3:%08lx,ret:%08lx
  ",
                 ((regs->pc)&0xffffff)-2,regs->orig_er0,regs->er1,regs->er2,regs->er3,regs->er0);
  }
  #endif

  
  /*
   * Do a system call from kernel instead of calling sys_execve so we
   * end up with proper pt_regs.
   */

  int kernel_execve(const char *filename,
  		  const char *const argv[],
  		  const char *const envp[])

  {
  	register long res __asm__("er0");

  	register const char *const *_c __asm__("er3") = envp;
  	register const char *const *_b __asm__("er2") = argv;

  	register const char * _a __asm__("er1") = filename;

  	__asm__ __volatile__ ("mov.l %1,er0
  \t"
  			"trapa	#0
  \t"
  			: "=r" (res)
  			: "g" (__NR_execve),
  			  "g" (_a),
  			  "g" (_b),
  			  "g" (_c)
  			: "cc", "memory");
  	return res;
  }