#!/bin/sh
#	$NetBSD: asm2gas,v 1.10 2008/04/28 20:23:26 martin Exp $

#
# Copyright (c) 1998,2008 The NetBSD Foundation, Inc.
# All rights reserved.
#
# This code is derived from software contributed to The NetBSD Foundation
# by Charles M. Hannum.
#
# 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.
#
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 THE FOUNDATION OR CONTRIBUTORS
# 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.
#

# This ugly script converts assembler code from Motorola's format to a
# form that gas (MIT syntax) can digest.

: ${SED:=sed}	# Which sed to use
P='%'		# Prefix for register names, may be '%' or ''

cat "$1" | "${SED}" -e '
  # format canonicalization

  # leave "#include" alone; change "#" and "*" comment lines to use "|".
  /^\#include/{p;d;}
  /^\#/{s//|#/;p;d;}
  /^\*/{s//|/;p;d;}
  /[ 	]IDNT[ 	]/{s/^/|/;p;d;}
  s/;/|/
  /[ 	]equ[ 	]/{
    s/\([A-Za-z_][A-Za-z0-9_]*\)[ 	]*equ[ 	]*/\1,/
    s/[ 	][ 	]*\(.*\)$/		|\1/
    s/		||/		|/
    s/^/	.set	/
    p;d
  }
  s/^\([A-Za-z_][A-Za-z0-9_]*\)[ 	][ 	]*/\1:	/
  s/^\([A-Za-z_][A-Za-z0-9_]*\)$/\1:/
  /^[A-Za-z_][A-Za-z0-9_]*:/{
    h
    s/:.*$/:/
    p
    g
    s/^.*:[ 	]*/	/
    /^	$/d
  }
  /^[ 	][ 	]*\([.a-zA-Z][.a-zA-Z0-9]*\)/{
    h
    s///
    s/^[ 	][ 	]*//
    s/[ 	][ 	]*\(.*\)$/		|\1/
    s/		||/		|/
    x
    s/^[ 	][ 	]*//
    s/[ 	][ 	]*.*$/	/
    y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/
    s/^/	/
    G
    s/\n//
  }
' | "${SED}" -e '
  # operator conversion

  s/^	section	7/	.text/
  s/^	section	8/	.text/
  s/^	section	15/	.data/
  /^	include/{s/include[ 	]/.include "/;s/\.h[ 	]*$/.defs"/;p;d;}
  s/^	xref/|	xref/
  s/^	end/|	end/
  s/^	xdef/	.global/

  s/^	dc\.l/	.long/
  s/^	dc\.w/	.short/
  s/^	dc\.b/	.byte/

  /^	[aceg-z]/{
    /^	add[aiqx]*\.[bwl]	/{s/\.//;p;d;}
    /^	andi*\.[bwl]	/{s/\.//;p;d;}
    /^	as[lr]\.[bwl]	/{s/\.//;p;d;}
    /^	clr\.[bwl]	/{s/\.//;p;d;}
    /^	cmp[i2]*\.[bwl]	/{s/\.//;p;d;}
    /^	eori*\.[bwl]	/{s/\.//;p;d;}
    /^	lea\.l	/{s/\..//;p;d;}
    /^	ls[lr]\.[bwl]	/{s/\.//;p;d;}
    /^	move[acmqs]*\.[bwl]	/{s/\.//;p;d;}
    /^	mul[su]\.[wl]	/{s/\.//;p;d;}
    /^	neg\.[bwl]	/{s/\.//;p;d;}
    /^	ori*\.[bwl]	/{s/\.//;p;d;}
    /^	ro[lrx]*\.[bwl]	/{s/\.//;p;d;}
    /^	sub[aiqx]*\.[bwl]	/{s/\.//;p;d;}
    /^	swap\.w	/{s/\..//;p;d;}
    /^	s\([a-tv-z][a-z]*\)\.b	/{s/\..//;p;d;}
    /^	tst\.[bwl]	/{s/\.//;p;d;}
    p;d
  }

  /^	bchg\.[bl]	/{s/\..//;p;d;}
  /^	bclr\.[bl]	/{s/\..//;p;d;}
  /^	bset\.[bl]	/{s/\..//;p;d;}
  /^	btst\.[bl]	/{s/\..//;p;d;}
  /^	div[sul]*\.[wl]	/{s/\.//;p;d;}
  /^	fabs\.[sdx]	/{s/\.//;p;d;}
  /^	fadd\.[sdxbwl]	/{s/\.//;p;d;}
  /^	fcmp\.[sdxbwl]	/{s/\.//;p;d;}
  /^	fdiv\.[sdx]	/{s/\.//;p;d;}
  /^	fmove[mx]*\.[sdxbwl]	/{s/\.//;p;d;}
  /^	fmul\.[sdx]	/{s/\.//;p;d;}
  /^	fneg\.[sdx]	/{s/\.//;p;d;}
  /^	fsqrt\.[sdx]	/{s/\.//;p;d;}
  /^	fsub\.[sdxbwl]	/{s/\.//;p;d;}
  /^	ftst\.[sdx]	/{s/\.//;p;d;}

  /^	b[a-eg-z][a-z]*\.b	/{s/\.b/s/;p;d;}
  /^	b[a-eg-z][a-z]*\.w	/{s/\.w//;p;d;}
  /^	b[a-eg-z][a-z]*\.l	/{s/\.l/l/;p;d;}
  /^	db[a-z][a-z]*\.w	/{s/\.w//;p;d;}
  /^	fb[a-eg-z][a-z]*\.w	/{s/\.w//;p;d;}
  /^	fb[a-eg-z][a-z]*\.l	/{s/\.l/l/;p;d;}
' | "${SED}" -e '
  # operand conversion

  # register names "FPIAR" -> "%FPI", etc., possibly without the "%"
  s/\([^_a-zA-Z0-9]\)FPIAR\([^_a-zA-Z0-9]\)/\1'"$P"'FPI\2/g
  s/\([^_a-zA-Z0-9]\)FPIAR$/\1'"$P"'FPI/g
  s/\([^_a-zA-Z0-9]\)fpiar\([^_a-zA-Z0-9]\)/\1'"$P"'fpi\2/g
  s/\([^_a-zA-Z0-9]\)fpiar$/\1'"$P"'fpi/g
  s/\([^_a-zA-Z0-9]\)FPCR\([^_a-zA-Z0-9]\)/\1'"$P"'FPCR\2/g
  s/\([^_a-zA-Z0-9]\)FPCR$/\1'"$P"'FPCR/g
  s/\([^_a-zA-Z0-9]\)fpcr\([^_a-zA-Z0-9]\)/\1'"$P"'fpcr\2/g
  s/\([^_a-zA-Z0-9]\)fpcr$/\1'"$P"'fpcr/g
  s/\([^_a-zA-Z0-9]\)FPSR\([^_a-zA-Z0-9]\)/\1'"$P"'FPSR\2/g
  s/\([^_a-zA-Z0-9]\)FPSR$/\1'"$P"'FPSR/g
  s/\([^_a-zA-Z0-9]\)fpsr\([^_a-zA-Z0-9]\)/\1'"$P"'fpsr\2/g
  s/\([^_a-zA-Z0-9]\)fpsr$/\1'"$P"'fpsr/g

  # Hexadecimal numbers
  s/\$\([0-9a-fA-F]\)/0x\1/g
  s/#:/#:0x/g

  # Insert "%" before more register names (only if $P = "%").
  # Some of the rules are repeated because of overlap between trailing
  # context in one match and leading context in another match; otherwise
  # only half the register names in "d4{d3:4},d0" would be converted.
  s/\([^[:alnum:]_%]\)\([dDaA][0-7]\)\([^[:alnum:]_]\)/\1'"$P"'\2\3/g
  s/\([^[:alnum:]_%]\)\([fF][pP][0-7]\)\([^[:alnum:]_]\)/\1'"$P"'\2\3/g
  s/\([^[:alnum:]_%]\)\(sp\)\([^[:alnum:]_]\)/\1'"$P"'\2\3/g
  s/\([^[:alnum:]_%]\)\(pc\)\([^[:alnum:]_]\)/\1'"$P"'\2\3/g

  s/\([^[:alnum:]_%]\)\([dDaA][0-7]\)\([^[:alnum:]_]\)/\1'"$P"'\2\3/g
  s/\([^[:alnum:]_%]\)\([fF][pP][0-7]\)\([^[:alnum:]_]\)/\1'"$P"'\2\3/g
  s/\([^[:alnum:]_%]\)\(sp\)\([^[:alnum:]_]\)/\1'"$P"'\2\3/g
  s/\([^[:alnum:]_%]\)\(pc\)\([^[:alnum:]_]\)/\1'"$P"'\2\3/g

  s/\([^[:alnum:]_%]\)\([dDaA][0-7]\)$/\1'"$P"'\2/g
  s/\([^[:alnum:]_%]\)\([dDaA][0-7]\)$/\1'"$P"'\2/g
  s/\([^[:alnum:]_%]\)\([fF][pP][0-7]\)$/\1'"$P"'\2/g
  s/\([^[:alnum:]_%]\)\(sp\)$/\1'"$P"'\2/g

  s/\(,\)\([dDaA][0-7]\)/\1'"$P"'\2/g
  s/\(,\)\([fF][pP][0-7]\)/\1'"$P"'\2/g

  # "-(%sp)" -> "%sp@-", etc. (possibly without the "%")
  s/-(\('"$P"'[sSpPaA][pPcC0-7]\))/\1@-/g
  # "(%sp)+" -> "%sp@+", etc. (possibly without the "%")
  s/(\('"$P"'[sSpPaA][pPcC0-7]\))+/\1@+/g
  # "foo(%sp,...)" -> "%sp@(foo,...)", etc. (possibly without the "%")
  s/\([-+A-Za-z0-9_]*\)(\('"$P"'[sSpPaA][pPcC0-7]\)\([),]\)/\2@(\1\3/g

  # ".w" -> ":w"; ".w*nn" -> ":w:nn"; "*nn" -> ":l:nn"; etc.
  s/\.\([bBwWlL])\)/:\1/g
  s/\.\([bBwWlL]\)\*\([0-9][0-9]*)\)/:\1:\2/g
  s/\*\([0-9][0-9]*\))/:l:\1)/g
  # "{nn:mm}" -> "{#nn:#mm}"
  s/{\([0-9][0-9]*\):\([0-9][0-9]*\)}/{#\1:#\2}/g
  # "{%d0:nn}" -> "{%d0:#nn}", etc. (possibly without the "%")
  s/{\('"$P"'[dD][0-7]\):\([0-9][0-9]*\)}/{\1:#\2}/g

  # Remove empty "()" or "(0)" after "@"
  s/@(0*)/@/g
  # Remove leading "," or trailing ":" in parentheses
  s/(,/(/g;s/:)/)/g

  # make up for a gas bug
  /^	fmovemx	/{
	s/	\('"$P"'[fF][pP][0-7]\),/	\1-\1,/
	s/,\('"$P"'[fF][pP][0-7]\)	/,\1-\1	/
	s/,\('"$P"'[fF][pP][0-7]\)$/,\1-\1/
  }
' | "${SED}" -e '
  # Floating point literal conversion

  s/:0x41dfffffffc00000/0r2147483647.0/g
  s/:0xc1e0000000000000/0r-2147483648.0/g
  s/:0x41dfffffffe00000/0r2147483647.5/g
  s/:0xc1e0000000100000/0r-2147483648.5/g
  s/:0x46fffe00/0r32767.0/g
  s/:0xc7000000/0r-32768.0/g
  s/:0x46ffff00/0r32767.5/g
  s/:0xc7000080/0r-32768.5/g
  s/:0x42fe0000/0r127.0/g
  s/:0xc3000000/0r-128.0/g
  s/:0x42ff0000/0r127.5/g
  s/:0xc3008000/0r-128.5/g
  s/:0x3F800000/0r1.0/g
  s/:0x00000000/0r0.0/g
  s/:0xBF800000/0r-1.0/g
  s/:0x3F000000/0r0.5/g
  s/:0x3E800000/0r0.25/g
  s/:0x42B8AA3B/0r92.332481384277343750/g
  s/:0xBC317218/0r-0.0108304247260093688964843750/g
  s/:0x3AB60B70/0r0.001388890668749809265136718750/g
  s/:0x3C088895/0r0.0083333449438214302062988281250/g
  s/:0x42B8AA3B/0r92.332481384277343750/g
  s/:0x3950097B/0r0.0001983995753107592463493347167968750/g
  s/:0x3AB60B6A/0r0.001388889970257878303527832031250/g
  s/:0x2F30CAA8/0r1.60791047143504783889511600136756896972656250e-10/g
  s/:0x310F8290/0r2.0883454965314740547910332679748535156250e-09/g
  s/:0x32D73220/0r2.5052088403754169121384620666503906250e-08/g
  s/:0x3493F281/0r2.755732850800995947793126106262207031250e-07/g
  s/:0x40000000/0r2.0/g
  s/:0x42800000/0r6.40e+01/g
  s/:0x3C800000/0r1.56250e-02/g
  s/fadds	#:0x00800000,'"$P"'[fF][pP]0/	.long	0xf23c4422,0x00800000/
  s/fsubs	#:0x00800000,'"$P"'[fF][pP]0/	.long	0xf23c4428,0x00800000/
  s/fsubs	#:0x00800000,'"$P"'[fF][pP]1/	.long	0xf23c44a8,0x00800000/
  s/fmoves	#:0x80000000,'"$P"'[fF][pP]0/	.long	0xf23c4400,0x80000000/
  s/fmoves		#:0x00000000,'"$P"'[fF][pP]0/	.long	0xf23c4400,0x00000000/

'