text: /*
  
  Copyright (c) 2011 Red Hat Incorporated.
  All rights reserved.
  
  Redistribution and use in source and binary forms, with or without 
  modification, are permitted provided that the following conditions are met: 
  
      Redistributions of source code must retain the above copyright 
      notice, this list of conditions and the following disclaimer.
  
      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.
  
      The name of Red Hat Incorporated may not be used to endorse 
      or promote products derived from this software without specific 
      prior written permission.
  
  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 RED HAT INCORPORATED 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. 
  
  */
  
  r8	=	0xffef0
  r9	=	0xffef1
  r10	=	0xffef2
  r11	=	0xffef3
  r12	=	0xffef4
  r13	=	0xffef5
  r14	=	0xffef6
  r15	=	0xffef7
  r16	=	0xffee8
  r17	=	0xffee9
  r18	=	0xffeea
  r19	=	0xffeeb
  r20	=	0xffeec
  r21	=	0xffeed
  r22	=	0xffeee
  r23	=	0xffeef
  
  #define SYS__exit  SYS_exit
  
  	.macro syscall_body  number
  	 /* The RL78 doesn't really have an "interrupt" upcode, just
  	    BRK, which we emulate exactly.  We use the STOP opcode,
  	    which is a breakpoint in the simulator.  */
  	mov	A, #\number
  	stop
  	ret
  	.endm
        
  	.macro do_syscall  name number
  __\name:
  	.global __\name
  _\name:
          .weak _\name
  	syscall_body \number
  	.endm
  
     .macro	syscall_returns	name number
  __\name:
  	.global __\name
  _\name:
          .weak _\name
  	mov	r8, #\number
  	ret
  	.endm
  
  #define S(name)         do_syscall	name, SYS_##name
  #define SYSCALL(number)	syscall_body	number
  #define ERR(name)	syscall_returns	name, -1
  #define OK(name)	syscall_returns	name, 0
  #define RET(name,val)	syscall_returns	name, val
  