text: /*
   * Copyright (c) 2014-2015 Dmitry V. Levin <ldv@altlinux.org>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include "defs.h"
  
  #include "xlat/kexec_load_flags.h"
  #include "xlat/kexec_arch_values.h"
  
  #ifndef KEXEC_ARCH_MASK
  # define KEXEC_ARCH_MASK 0xffff0000
  #endif
  #ifndef KEXEC_SEGMENT_MAX
  # define KEXEC_SEGMENT_MAX 16
  #endif
  
  static bool
  print_seg(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
  {
  	const kernel_ulong_t *seg;
  	kernel_ulong_t seg_buf[4];
  
          if (elem_size < sizeof(seg_buf)) {
  		unsigned int i;
  
  		for (i = 0; i < ARRAY_SIZE(seg_buf); ++i)
  			seg_buf[i] = ((unsigned int *) elem_buf)[i];
  		seg = seg_buf;
  	} else {
  		seg = elem_buf;
  	}
  
  	tprints("{buf=");
  	printaddr(seg[0]);
  	tprintf(", bufsz=%" PRI_klu ", mem=", seg[1]);
  	printaddr(seg[2]);
  	tprintf(", memsz=%" PRI_klu "}", seg[3]);
  
  	return true;
  }
  
  static void
  print_kexec_segments(struct tcb *const tcp, const kernel_ulong_t addr,
  		     const kernel_ulong_t len)
  {
  	if (len > KEXEC_SEGMENT_MAX) {
  		printaddr(addr);
  		return;
  	}
  
  	kernel_ulong_t seg[4];
  	const size_t sizeof_seg = ARRAY_SIZE(seg) * current_wordsize;
  
  	print_array(tcp, addr, len, seg, sizeof_seg,
  		    umoven_or_printaddr, print_seg, 0);
  }
  
  SYS_FUNC(kexec_load)
  {
  	/* entry, nr_segments */
  	printaddr(tcp->u_arg[0]);
  	tprintf(", %" PRI_klu ", ", tcp->u_arg[1]);
  
  	/* segments */
  	print_kexec_segments(tcp, tcp->u_arg[2], tcp->u_arg[1]);
  	tprints(", ");
  
  	/* flags */
  	kernel_ulong_t n = tcp->u_arg[3];
  	printxval64(kexec_arch_values, n & KEXEC_ARCH_MASK, "KEXEC_ARCH_???");
  	n &= ~(kernel_ulong_t) KEXEC_ARCH_MASK;
  	if (n) {
  		tprints("|");
  		printflags64(kexec_load_flags, n, "KEXEC_???");
  	}
  
  	return RVAL_DECODED;
  }
  
  #include "xlat/kexec_file_load_flags.h"
  
  SYS_FUNC(kexec_file_load)
  {
  	/* kernel_fd */
  	printfd(tcp, tcp->u_arg[0]);
  	tprints(", ");
  	/* initrd_fd */
  	printfd(tcp, tcp->u_arg[1]);
  	tprints(", ");
  	/* cmdline_len */
  	tprintf("%" PRI_klu ", ", tcp->u_arg[2]);
  	/* cmdline */
  	printstrn(tcp, tcp->u_arg[3], tcp->u_arg[2]);
  	tprints(", ");
  	/* flags */
  	printflags64(kexec_file_load_flags, tcp->u_arg[4], "KEXEC_FILE_???");
  
  	return RVAL_DECODED;
  }
  