cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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as-version.sh (2072B)

      1#!/bin/sh
      2# SPDX-License-Identifier: GPL-2.0-only
      3#
      4# Print the assembler name and its version in a 5 or 6-digit form.
      5# Also, perform the minimum version check.
      6# (If it is the integrated assembler, return 0 as the version, and
      7# skip the version check.)
      8
      9set -e
     10
     11# Convert the version string x.y.z to a canonical 5 or 6-digit form.
     12get_canonical_version()
     13{
     14	IFS=.
     15	set -- $1
     16
     17	# If the 2nd or 3rd field is missing, fill it with a zero.
     18	#
     19	# The 4th field, if present, is ignored.
     20	# This occurs in development snapshots as in 2.35.1.20201116
     21	echo $((10000 * $1 + 100 * ${2:-0} + ${3:-0}))
     22}
     23
     24# Clang fails to handle -Wa,--version unless -fno-integrated-as is given.
     25# We check -fintegrated-as, expecting it is explicitly passed in for the
     26# integrated assembler case.
     27check_integrated_as()
     28{
     29	while [ $# -gt 0 ]; do
     30		if [ "$1" = -fintegrated-as ]; then
     31			# For the integrated assembler, we do not check the
     32			# version here. It is the same as the clang version, and
     33			# it has been already checked by scripts/cc-version.sh.
     34			echo LLVM 0
     35			exit 0
     36		fi
     37		shift
     38	done
     39}
     40
     41check_integrated_as "$@"
     42
     43orig_args="$@"
     44
     45# Get the first line of the --version output.
     46IFS='
     47'
     48set -- $(LC_ALL=C "$@" -Wa,--version -c -x assembler /dev/null -o /dev/null 2>/dev/null)
     49
     50# Split the line on spaces.
     51IFS=' '
     52set -- $1
     53
     54min_tool_version=$(dirname $0)/min-tool-version.sh
     55
     56if [ "$1" = GNU -a "$2" = assembler ]; then
     57	shift $(($# - 1))
     58	version=$1
     59	min_version=$($min_tool_version binutils)
     60	name=GNU
     61else
     62	echo "$orig_args: unknown assembler invoked" >&2
     63	exit 1
     64fi
     65
     66# Some distributions append a package release number, as in 2.34-4.fc32
     67# Trim the hyphen and any characters that follow.
     68version=${version%-*}
     69
     70cversion=$(get_canonical_version $version)
     71min_cversion=$(get_canonical_version $min_version)
     72
     73if [ "$cversion" -lt "$min_cversion" ]; then
     74	echo >&2 "***"
     75	echo >&2 "*** Assembler is too old."
     76	echo >&2 "***   Your $name assembler version:    $version"
     77	echo >&2 "***   Minimum $name assembler version: $min_version"
     78	echo >&2 "***"
     79	exit 1
     80fi
     81
     82echo $name $cversion