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190 lines
6.6 KiB
Bash
Executable File
190 lines
6.6 KiB
Bash
Executable File
#!/bin/sh
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# genscripts.sh - generate the ld-emulation-target specific files
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#
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# Usage: genscripts.sh srcdir libdir exec_prefix \
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# host target target_alias default_emulation \
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# native_lib_dirs this_emulation tool_dir
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#
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# Sample usage:
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# genscripts.sh /djm/ld-devo/devo/ld /usr/local/lib /usr/local \
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# sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sun4 \
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# "" sun3 sparc-sun-sunos4.1.3
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# produces sun3.x sun3.xbn sun3.xn sun3.xr sun3.xu em_sun3.c
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srcdir=$1
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libdir=$2
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exec_prefix=$3
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host=$4
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target=$5
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target_alias=$6
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EMULATION_LIBPATH=$7
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NATIVE_LIB_DIRS=$8
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EMULATION_NAME=$9
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shift 9
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# Can't use ${1:-$target_alias} here due to an Ultrix shell bug.
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if [ "x$1" = "x" ] ; then
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tool_lib=${exec_prefix}/${target_alias}/lib
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else
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tool_lib=${exec_prefix}/$1/lib
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fi
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# Include the emulation-specific parameters:
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. ${srcdir}/emulparams/${EMULATION_NAME}.sh
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if test -d ldscripts; then
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true
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else
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mkdir ldscripts
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fi
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# Set the library search path, for libraries named by -lfoo.
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# If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used.
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# Otherwise, the default is set here.
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#
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# The format is the usual list of colon-separated directories.
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# To force a logically empty LIB_PATH, do LIBPATH=":".
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if [ "x${LIB_PATH}" = "x" ] ; then
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# Cross, or native non-default emulation not requesting LIB_PATH.
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LIB_PATH=
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if [ "x${host}" = "x${target}" ] ; then
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case " $EMULATION_LIBPATH " in
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*" ${EMULATION_NAME} "*)
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# Native, and default or emulation requesting LIB_PATH.
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LIB_PATH=/lib:/usr/lib
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if [ -n "${NATIVE_LIB_DIRS}" ]; then
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LIB_PATH=${LIB_PATH}:${NATIVE_LIB_DIRS}
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fi
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if [ "${libdir}" != /usr/lib ]; then
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LIB_PATH=${LIB_PATH}:${libdir}
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fi
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if [ "${libdir}" != /usr/local/lib ] ; then
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LIB_PATH=${LIB_PATH}:/usr/local/lib
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fi
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esac
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fi
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fi
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# Always search $(tooldir)/lib, aka /usr/local/TARGET/lib.
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LIB_PATH=${LIB_PATH}:${tool_lib}
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LIB_SEARCH_DIRS=`echo ${LIB_PATH} | tr ':' ' ' | sed -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\1);/g'`
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# Generate 5 or 6 script files from a master script template in
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# ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6
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# script files is actually used depends on command line options given
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# to ld. (SCRIPT_NAME was set in the emulparams_file.)
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#
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# A .x script file is the default script.
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# A .xr script is for linking without relocation (-r flag).
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# A .xu script is like .xr, but *do* create constructors (-Ur flag).
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# A .xn script is for linking with -n flag (mix text and data on same page).
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# A .xbn script is for linking with -N flag (mix text and data on same page).
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# A .xs script is for generating a shared library with the --shared
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# flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
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# emulation parameters.
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# A .xc script is for linking with -z combreloc; it is only generated if
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# $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
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# $SCRIPT_NAME is "elf".
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# A .xsc script is for linking with --shared -z combreloc; it is generated
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# if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
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# $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation
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# parameters too.
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if [ "x$SCRIPT_NAME" = "xelf" ]; then
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GENERATE_COMBRELOC_SCRIPT=yes
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fi
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SEGMENT_SIZE=${SEGMENT_SIZE-${TARGET_PAGE_SIZE}}
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# Determine DATA_ALIGNMENT for the 5 variants, using
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# values specified in the emulparams/<emulation>.sh file or default.
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DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
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DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
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DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
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DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
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DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
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LD_FLAG=r
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DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
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DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
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( echo "/* Script for ld -r: link without relocation */"
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. ${srcdir}/emulparams/${EMULATION_NAME}.sh
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. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
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) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xr
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LD_FLAG=u
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DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
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CONSTRUCTING=" "
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( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
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. ${srcdir}/emulparams/${EMULATION_NAME}.sh
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. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
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) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xu
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LD_FLAG=
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DATA_ALIGNMENT=${DATA_ALIGNMENT_}
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RELOCATING=" "
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( echo "/* Default linker script, for normal executables */"
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. ${srcdir}/emulparams/${EMULATION_NAME}.sh
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. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
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) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.x
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LD_FLAG=n
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DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
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TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}}
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( echo "/* Script for -n: mix text and data on same page */"
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. ${srcdir}/emulparams/${EMULATION_NAME}.sh
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. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
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) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xn
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LD_FLAG=N
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DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
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( echo "/* Script for -N: mix text and data on same page; don't align data */"
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. ${srcdir}/emulparams/${EMULATION_NAME}.sh
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. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
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) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xbn
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if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
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DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}}
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LD_FLAG=c
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COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
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( echo "/* Script for -z combreloc: combine and sort reloc sections */"
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. ${srcdir}/emulparams/${EMULATION_NAME}.sh
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. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
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) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xc
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rm -f ${COMBRELOC}
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COMBRELOC=
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fi
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if test -n "$GENERATE_SHLIB_SCRIPT"; then
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LD_FLAG=shared
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DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
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CREATE_SHLIB=" "
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# Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
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(
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echo "/* Script for ld --shared: link shared library */"
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. ${srcdir}/emulparams/${EMULATION_NAME}.sh
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. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
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) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xs
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if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
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LD_FLAG=cshared
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DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
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COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
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( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
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. ${srcdir}/emulparams/${EMULATION_NAME}.sh
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. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
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) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsc
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rm -f ${COMBRELOC}
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COMBRELOC=
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fi
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fi
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for i in $EMULATION_LIBPATH ; do
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test "$i" = "$EMULATION_NAME" && COMPILE_IN=true
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done
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# Generate e${EMULATION_NAME}.c.
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. ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em
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