ld/genscripts.sh

   1 # genscripts.sh
   2 # This shell script does the work of generating the ld-emulation-target
   3 # specific information from a specific file of paramaters.
   4 # Usage: genscripts.sh srcdir tooldirlib libdir host_alias target_alias emulation_name
   5 # Sample usage:
   6 # genscripts.sh /offsite/djm/work/devo/ld /usr/local/sparc-sun-sunos4.1.3/lib /usr/local/lib sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sun3.sh
   7 # produces sun3.x sun3.xbn sun3.xn sun3.xr sun3.xu em_sun3.c
   8
   9 srcdir=$1
  10 tooldirlib=$2
  11 libdir=$3
  12 host_alias=$4
  13 target_alias=$5
  14
  15 # Include the emulation-specific parameters:
  16 . ${srcdir}/emulparams/$6
  17
  18 # Set the library search path, for libraries named by -lfoo.
  19 # If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used.
  20 # Otherwise, the default is set here.
  21 #
  22 # The format is the usual list of colon-separated directories.
  23 # To force a logically empty LIB_PATH, do LIBPATH=":".
  24
  25 if [ "x${LIB_PATH}" = "x" ] ; then
  26    if [ "x${host_alias}" = "x${target_alias}" ] ; then
  27       # Native.
  28       LIB_PATH=/lib:/usr/lib:${tooldirlib}:${libdir}
  29       if [ "${libdir}" != /usr/local/lib ] ; then
  30         LIB_PATH=${LIB_PATH}:/usr/local/lib
  31       fi
  32    else
  33       # Cross.
  34       LIB_PATH=${tooldirlib}
  35    fi
  36 fi
  37 LIB_SEARCH_DIRS=`echo ${LIB_PATH} | tr ':' ' ' | sed -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\1);/g'`
  38
  39 # Generate 5 script files from a master script template in
  40 # ${srcdir}/scripttempl/${SCRIPT_NAME}.sh.  Which one of the 5 script files
  41 # is actually used depends on command line options given to ld.
  42 #
  43 # A .x script file is the default script.
  44 # A .xr script is for linking without relocation (-r flag).
  45 # A .xu script is like .xr, but *do* create constructors (-Ur flag).
  46 # A .xn script is for linking with -n flag (mix text and data on same page).
  47 # A .xbn script is for linking with -N flag (mix text and data on same page).
  48
  49 SEGMENT_SIZE=${SEGMENT_SIZE-${PAGE_SIZE}}
  50
  51 # Determine DATA_ALIGNMENT for the 5 variants, using
  52 # values specified in the emulparams/<emulation>.sh file or default.
  53
  54 DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
  55 DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
  56 DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
  57 DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
  58 DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
  59
  60 LD_FLAG=r
  61 DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
  62 DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
  63 (. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
  64   ldscripts/${EMULATION_NAME}.xr
  65
  66 LD_FLAG=u
  67 DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
  68 CONSTRUCTING=
  69 (. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
  70   ldscripts/${EMULATION_NAME}.xu
  71
  72 LD_FLAG=
  73 DATA_ALIGNMENT=${DATA_ALIGNMENT_}
  74 RELOCATING=
  75 (. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
  76   ldscripts/${EMULATION_NAME}.x
  77
  78 LD_FLAG=n
  79 DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
  80 TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}}
  81 (. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
  82   ldscripts/${EMULATION_NAME}.xn
  83
  84 LD_FLAG=N
  85 DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
  86 (. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
  87   ldscripts/${EMULATION_NAME}.xbn
  88
  89 #sed -e s/"<ldtarget>"/${EMULATION_NAME}/g -e s/"<arch>"/${ARCH}/g \
  90 # -e s/"<target>"/${EMULATION_NAME}/g -e s/"<target_name>"/${OUTPUT_FORMAT}/g \
  91 # <${srcdir}/${TEMPLATE_NAME-ldtemplate} >em_${EMULATION_NAME}.c
  92
  93 # Generate em_${EMULATION_NAME}.c.
  94 . ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em