#!/bin/sh

# Copyright (c) 2005 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: 
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#     Redistributions of source code must retain the above copyright 
#     notice, this list of conditions and the following disclaimer.
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#     notice, this list of conditions and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
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#     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
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# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

srcdir="$1"
name="$2"
ramstart="$3"
ramsize="$4"
romstart="$5"
romsize="$6"
vecprefix="$7"

sedcmd="s/RAMSTART/$ramstart/g; s/RAMSIZE/$ramsize/g"
sedcmd="$sedcmd; s/ROMSTART/$romstart/g; s/ROMSIZE/$romsize/g"

# .rodata can be left with .text
rotext='/IF_ROCOPY/d'
# .rodata needs to be with .data
rodata='/IF_ROROM/d'

# All sections are put in one region
simram='s/LOWROM/RAM/g; s/= .*SIZEOF.*/= 0);/; s/AT>ROM//g'
oneram='s/> ROM/> RAM/g;'
# RW data needs to be copied to RAM
rwonly='s/LOWROM/ROM/g; s/ SIZEOF(.rodata) + //g'
# all data needs to be copied to RAM
rocopy='s/LOWROM/RAM AT>ROM/g'

case $name:$romstart in
  sim*:0 )
    # The r8c and m32c simulators have only a single memory region
    sedcmd="$sedcmd; $simram; $oneram; $rotext"
    ;;
  sim*:* )
    # This is most likely the m16c simulator
    sedcmd="$sedcmd; $simram; $rodata"
    ;;
  *:0x???? )
    # This is most likely the r8c chip
    sedcmd="$sedcmd; $rwonly; $rotext"
    ;;
  m32*:* )
    sedcmd="$sedcmd; $rwonly; $rotext"
    ;;
  *:* )
    sedcmd="$sedcmd; $rocopy; $rodata"
    ;;
esac
sedcmd="$sedcmd; /ORIGIN = 0,/d"

sedcmd="$sedcmd; s/VECSTART/${vecprefix}dc/; s/RESETSTART/${vecprefix}fc/"

sed "$sedcmd" < ${srcdir}/m32c.tmpl > ${name}.ld