genscripts.sh revision 77298
198944Sobrien#!/bin/sh 298944Sobrien# genscripts.sh - generate the ld-emulation-target specific files 398944Sobrien# 498944Sobrien# Usage: genscripts.sh srcdir libdir exec_prefix \ 598944Sobrien# host target target_alias default_emulation \ 698944Sobrien# native_lib_dirs this_emulation tool_dir 798944Sobrien# 898944Sobrien# Sample usage: 998944Sobrien# genscripts.sh /djm/ld-devo/devo/ld /usr/local/lib /usr/local \ 1098944Sobrien# sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sun4 \ 1198944Sobrien# "" sun3 sparc-sun-sunos4.1.3 1298944Sobrien# produces sun3.x sun3.xbn sun3.xn sun3.xr sun3.xu em_sun3.c 1398944Sobrien 1498944Sobriensrcdir=$1 1598944Sobrienlibdir=$2 1698944Sobrienexec_prefix=$3 1798944Sobrienhost=$4 1898944Sobrientarget=$5 1998944Sobrientarget_alias=$6 2098944SobrienEMULATION_LIBPATH=$7 2198944SobrienNATIVE_LIB_DIRS=$8 2298944SobrienEMULATION_NAME=$9 2398944Sobrienshift 9 2498944Sobrien# Can't use ${1:-$target_alias} here due to an Ultrix shell bug. 2598944Sobrienif [ "x$1" = "x" ] ; then 2698944Sobrien tool_lib=${exec_prefix}/${target_alias}/lib 2798944Sobrienelse 2898944Sobrien tool_lib=${exec_prefix}/$1/lib 29fi 30 31# Include the emulation-specific parameters: 32. ${srcdir}/emulparams/${EMULATION_NAME}.sh 33 34if test -d ldscripts; then 35 true 36else 37 mkdir ldscripts 38fi 39 40# Set the library search path, for libraries named by -lfoo. 41# If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used. 42# Otherwise, the default is set here. 43# 44# The format is the usual list of colon-separated directories. 45# To force a logically empty LIB_PATH, do LIBPATH=":". 46 47if [ "x${LIB_PATH}" = "x" ] ; then 48 # Cross, or native non-default emulation not requesting LIB_PATH. 49 LIB_PATH= 50 51 if [ "x${host}" = "x${target}" ] ; then 52 case " $EMULATION_LIBPATH " in 53 *" ${EMULATION_NAME} "*) 54 # Native, and default or emulation requesting LIB_PATH. 55 LIB_PATH=/lib:/usr/lib 56 if [ -n "${NATIVE_LIB_DIRS}" ]; then 57 LIB_PATH=${LIB_PATH}:${NATIVE_LIB_DIRS} 58 fi 59 if [ "${libdir}" != /usr/lib ]; then 60 LIB_PATH=${LIB_PATH}:${libdir} 61 fi 62 if [ "${libdir}" != /usr/local/lib ] ; then 63 LIB_PATH=${LIB_PATH}:/usr/local/lib 64 fi 65 esac 66 fi 67fi 68 69# Always search $(tooldir)/lib, aka /usr/local/TARGET/lib. 70LIB_PATH=${LIB_PATH}:${tool_lib} 71 72LIB_SEARCH_DIRS=`echo ${LIB_PATH} | tr ':' ' ' | sed -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\1);/g'` 73 74# Generate 5 or 6 script files from a master script template in 75# ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6 76# script files is actually used depends on command line options given 77# to ld. (SCRIPT_NAME was set in the emulparams_file.) 78# 79# A .x script file is the default script. 80# A .xr script is for linking without relocation (-r flag). 81# A .xu script is like .xr, but *do* create constructors (-Ur flag). 82# A .xn script is for linking with -n flag (mix text and data on same page). 83# A .xbn script is for linking with -N flag (mix text and data on same page). 84# A .xs script is for generating a shared library with the --shared 85# flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the 86# emulation parameters. 87 88SEGMENT_SIZE=${SEGMENT_SIZE-${TARGET_PAGE_SIZE}} 89 90# Determine DATA_ALIGNMENT for the 5 variants, using 91# values specified in the emulparams/<emulation>.sh file or default. 92 93DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}" 94DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}" 95DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}" 96DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}" 97DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}" 98 99LD_FLAG=r 100DATA_ALIGNMENT=${DATA_ALIGNMENT_r} 101DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})" 102(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \ 103 ldscripts/${EMULATION_NAME}.xr 104 105LD_FLAG=u 106DATA_ALIGNMENT=${DATA_ALIGNMENT_u} 107CONSTRUCTING=" " 108(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \ 109 ldscripts/${EMULATION_NAME}.xu 110 111LD_FLAG= 112DATA_ALIGNMENT=${DATA_ALIGNMENT_} 113RELOCATING=" " 114(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \ 115 ldscripts/${EMULATION_NAME}.x 116 117LD_FLAG=n 118DATA_ALIGNMENT=${DATA_ALIGNMENT_n} 119TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}} 120(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \ 121 ldscripts/${EMULATION_NAME}.xn 122 123LD_FLAG=N 124DATA_ALIGNMENT=${DATA_ALIGNMENT_N} 125(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \ 126 ldscripts/${EMULATION_NAME}.xbn 127 128if test -n "$GENERATE_SHLIB_SCRIPT"; then 129 LD_FLAG=shared 130 DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}} 131 CREATE_SHLIB=" " 132 # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR. 133 (. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \ 134 ldscripts/${EMULATION_NAME}.xs 135fi 136 137for i in $EMULATION_LIBPATH ; do 138 test "$i" = "$EMULATION_NAME" && COMPILE_IN=true 139done 140 141# Generate e${EMULATION_NAME}.c. 142. ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em 143