xref: /src/external/lgpl3/gmp/dist/mpn/x86/t-zdisp.sh

#! /bin/sh
#
# Copyright 2000 Free Software Foundation, Inc.
#
# This file is part of the GNU MP Library.
#
# The GNU MP Library is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation; either version 3 of the License, or (at
# your option) any later version.
#
# The GNU MP Library is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
# License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.


# Usage: cd $(builddir)/mpn
#        $(srcdir)/x86/t-zdisp.sh
#
# Run the Zdisp() macro instructions through the assembler to check
# the encodings used.  Mismatches are printed, no output means all ok.
#
# This program is only meant for use during development.  It can be
# run in the mpn build directory of any x86 configuration.
#
# For this test the assembler needs to generate byte sized 0
# displacements when given something like 0(%eax).  Recent versions of
# gas are suitable (eg. 2.9.x or 2.10.x).

set -e

cat >tmp-zdisptest.asm <<\EOF

include(`../config.m4')

dnl  Redefine Zdisp_match to output its pattern and encoding.
define(`Zdisp_match',
`define(`Zdisp_found',1)dnl
ifelse(`$2',0,`	$1	$2$3, $4')`'dnl
ifelse(`$3',0,`	$1	$2, $3$4')`'dnl

	.byte	$5
')
	.text
	Zdisp()
EOF

m4 tmp-zdisptest.asm >tmp-zdisptest.s
as -o tmp-zdisptest.o tmp-zdisptest.s

# Demand duplicates from the instruction patterns and byte encodings.
objdump -d tmp-zdisptest.o | awk '
/^ *[a-z0-9]+:/ {
	sub(/^ *[a-z0-9]+:/,"")
        print
}' | sort | uniq -u