95 lines
3.2 KiB
Bash
Executable file
95 lines
3.2 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 host_alias target_alias \
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# default_emulation this_emulation
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#
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# Sample usage:
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# genscripts.sh /djm/ld-devo/devo/ld /usr/local/lib sparc-sun-sunos4.1.3 \
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# sparc-sun-sunos4.1.3 sun4 sun3
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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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host_alias=$3
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target_alias=$4
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DEFAULT_EMULATION=$5
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EMULATION_NAME=$6
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# Include the emulation-specific parameters:
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. ${srcdir}/emulparams/${EMULATION_NAME}.sh
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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${LIB_PATH}" = "x" ] ; then
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if [ "x${host_alias}" = "x${target_alias}" ] ; then
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# Native.
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LIB_PATH=/lib:/usr/lib:${libdir}
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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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else
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# Cross.
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LIB_PATH=:
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fi
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fi
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LIB_SEARCH_DIRS=`echo ${LIB_PATH} | tr ':' ' ' | sed -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\1);/g'`
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# Generate 5 script files from a master script template in
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# ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 script files
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# is actually used depends on command line options given to ld.
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# (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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SEGMENT_SIZE=${SEGMENT_SIZE-${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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(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
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ldscripts/${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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(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
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ldscripts/${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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(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
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ldscripts/${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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(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
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ldscripts/${EMULATION_NAME}.xn
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LD_FLAG=N
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DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
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(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
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ldscripts/${EMULATION_NAME}.xbn
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# Generate em_${EMULATION_NAME}.c.
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. ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em
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