12de3b87aSKai Wang#!/bin/sh 22de3b87aSKai Wang# 3d003e0d7SEd Maste# $Id: native-elf-format 3735 2019-04-25 19:44:47Z jkoshy $ 42de3b87aSKai Wang# 52de3b87aSKai Wang# Find the native ELF format for a host platform by compiling a 62de3b87aSKai Wang# test object and examining the resulting object. 72de3b87aSKai Wang# 82de3b87aSKai Wang# This script is used if there is no easy way to determine this 92de3b87aSKai Wang# information statically at compile time. 102de3b87aSKai Wang 112de3b87aSKai Wangprogram=`basename $0` 122de3b87aSKai Wangtmp_c=`mktemp -u nefXXXXXX`.c 132de3b87aSKai Wangtmp_o=`echo ${tmp_c} | sed -e 's/.c$/.o/'` 142de3b87aSKai Wang 152de3b87aSKai Wangtrap "rm -f ${tmp_c} ${tmp_o}" 0 1 2 3 15 162de3b87aSKai Wang 172de3b87aSKai Wangtouch ${tmp_c} 182de3b87aSKai Wang 192de3b87aSKai Wangecho "/* Generated by ${program} on `date` */" 202de3b87aSKai Wang 212de3b87aSKai Wangcc -c ${tmp_c} -o ${tmp_o} 2267d97fe7SEd MasteLC_ALL=C readelf -h ${tmp_o} | awk ' 232de3b87aSKai Wang$1 ~ "Class:" { 242de3b87aSKai Wang sub("ELF","",$2); elfclass = $2; 252de3b87aSKai Wang } 262de3b87aSKai Wang$1 ~ "Data:" { 272de3b87aSKai Wang if (match($0, "little")) { 282de3b87aSKai Wang elfdata = "LSB"; 292de3b87aSKai Wang } else { 302de3b87aSKai Wang elfdata = "MSB"; 312de3b87aSKai Wang } 322de3b87aSKai Wang } 332de3b87aSKai Wang$1 ~ "Machine:" { 342de3b87aSKai Wang if (match($0, "Intel.*386")) { 352de3b87aSKai Wang elfarch = "EM_386"; 36839529caSEd Maste } else if (match($0, "MIPS")) { 37839529caSEd Maste elfarch = "EM_MIPS"; 38ae500c1fSEd Maste } else if (match($0, ".*[xX]86[-_]64")) { 392de3b87aSKai Wang elfarch = "EM_X86_64"; 40d003e0d7SEd Maste } else if (match($0, "PowerPC64")) { 41d003e0d7SEd Maste elfarch = "EM_PPC64"; 42*8c22b9f3SKyle Evans } else if (match($0, "AArch64")) { 43*8c22b9f3SKyle Evans elfarch = "EM_AARCH64"; 442de3b87aSKai Wang } else { 452de3b87aSKai Wang elfarch = "unknown"; 462de3b87aSKai Wang } 472de3b87aSKai Wang } 482de3b87aSKai WangEND { 492de3b87aSKai Wang printf("#define ELFTC_CLASS ELFCLASS%s\n", elfclass); 502de3b87aSKai Wang printf("#define ELFTC_ARCH %s\n", elfarch); 512de3b87aSKai Wang printf("#define ELFTC_BYTEORDER ELFDATA2%s\n", elfdata); 522de3b87aSKai Wang}' 532de3b87aSKai Wang 54