genscripts.sh revision 77571
1137284Scognet#!/bin/sh 2137284Scognet# genscripts.sh - generate the ld-emulation-target specific files 3137284Scognet# 4137284Scognet# Usage: genscripts.sh srcdir libdir host target target_alias \ 5137284Scognet# default_emulation native_lib_dirs this_emulation 6137284Scognet# 7137284Scognet# Sample usage: 8137284Scognet# genscripts.sh /djm/ld-devo/devo/ld /usr/local/lib sparc-sun-sunos4.1.3 \ 9140279Sdas# sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sun4 "" sun3 sparc-sun-sunos4.1.3 10143858Scognet# produces sun3.x sun3.xbn sun3.xn sun3.xr sun3.xu em_sun3.c 11143858Scognet# 12# $FreeBSD: head/gnu/usr.bin/binutils/ld/genscripts.sh 77571 2001-06-01 05:31:02Z obrien $ 13# 14# This is a cut-down version of the GNU script. Instead of jumping through 15# hoops for all possible combinations of paths, just use the libdir 16# argument in place of LIB_PATH. 17# 18# The host, target and target_alias arguments are not used in this version. 19# 20 21srcdir=$1 22libdir=$2 23host=$3 24target=$4 25target_alias=$5 26EMULATION_LIBPATH=$6 27NATIVE_LIB_DIRS=$7 28EMULATION_NAME=$8 29 30# Include the emulation-specific parameters: 31. ${srcdir}/emulparams/${EMULATION_NAME}.sh 32 33if test -d ldscripts; then 34 true 35else 36 mkdir ldscripts 37fi 38 39# Set the library search path, for libraries named by -lfoo. 40# If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used. 41# Otherwise, the default is set here. 42# 43# The format is the usual list of colon-separated directories. 44# To force a logically empty LIB_PATH, do LIBPATH=":". 45 46LIB_SEARCH_DIRS=`echo ${libdir} | tr ':' ' ' | sed -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\1);/g'` 47 48# Generate 5 or 6 script files from a master script template in 49# ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6 50# script files is actually used depends on command line options given 51# to ld. (SCRIPT_NAME was set in the emulparams_file.) 52# 53# A .x script file is the default script. 54# A .xr script is for linking without relocation (-r flag). 55# A .xu script is like .xr, but *do* create constructors (-Ur flag). 56# A .xn script is for linking with -n flag (mix text and data on same page). 57# A .xbn script is for linking with -N flag (mix text and data on same page). 58# A .xs script is for generating a shared library with the --shared 59# flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the 60# emulation parameters. 61 62SEGMENT_SIZE=${SEGMENT_SIZE-${TARGET_PAGE_SIZE}} 63 64# Determine DATA_ALIGNMENT for the 5 variants, using 65# values specified in the emulparams/<emulation>.sh file or default. 66 67DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}" 68DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}" 69DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}" 70DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}" 71DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}" 72 73LD_FLAG=r 74DATA_ALIGNMENT=${DATA_ALIGNMENT_r} 75DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})" 76(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' \ 77 > ldscripts/${EMULATION_NAME}.xr 78 79LD_FLAG=u 80DATA_ALIGNMENT=${DATA_ALIGNMENT_u} 81CONSTRUCTING=" " 82(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' \ 83 > ldscripts/${EMULATION_NAME}.xu 84 85LD_FLAG= 86DATA_ALIGNMENT=${DATA_ALIGNMENT_} 87RELOCATING=" " 88(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' \ 89 > ldscripts/${EMULATION_NAME}.x 90 91LD_FLAG=n 92DATA_ALIGNMENT=${DATA_ALIGNMENT_n} 93TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}} 94(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' \ 95 > ldscripts/${EMULATION_NAME}.xn 96 97LD_FLAG=N 98DATA_ALIGNMENT=${DATA_ALIGNMENT_N} 99(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' \ 100 > ldscripts/${EMULATION_NAME}.xbn 101 102if test -n "$GENERATE_SHLIB_SCRIPT"; then 103 LD_FLAG=shared 104 DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}} 105 CREATE_SHLIB=" " 106 # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR. 107 (. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' \ 108 > ldscripts/${EMULATION_NAME}.xs 109fi 110 111for i in $EMULATION_LIBPATH ; do 112 test "$i" = "$EMULATION_NAME" && COMPILE_IN=true 113done 114# Generate e${EMULATION_NAME}.c. 115. ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em 116