ld/genscripts.sh

   1 # This shell script does the work of generating the ld-emulation-target
   2 # specific information from a specific file of paramaters.
   3 # Usage: genscripts.sh srcdir host_alias target_alias emulation_name
   4
   5 srcdir=$1
   6 host_alias=$2
   7 target_alias=$3
   8
   9 # Include the emulation-specic parameters:
  10 . ${srcdir}/$4
  11
  12 # Set the library search path (for libraries named by -lfoo).
  13 # If LIB_PATH is defined (and non-empty), it is used.
  14 # (The format is the usual list of colon-separated directories.)
  15 # (To force a logically empty LIB_PATH, do LIBPATH=":".)
  16 # Otherwise, the default is /lib:/usr/lib:/usr/local/lib,
  17 # unless cross-compiling, in which case the default remains empty.
  18
  19 if [ "x${LIB_PATH}" = "x" -a "x${host_alias}" = "x${target_alias}" ] ; then
  20    LIB_PATH=/lib:/usr/lib:/usr/local/lib
  21 fi
  22 LIB_SEARCH_DIRS=`echo ${LIB_PATH} | tr ':' ' ' | sed -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\1);/g'`
  23
  24 # This  script generates 5 script files from the master script template
  25 # in ${srcdir}/${SCRIPT_NAME}.sh.  Which one of the 5 script files
  26 # is actually used depends on command line flags given to ld.
  27 # The actual script is filtered through the mkscript program
  28 # to convert it to a form suitable for including in a C program
  29 # as a C string literal.
  30 #
  31 # A .x script file is the default script.
  32 # A .xr script is for linking without relocation (-r flag).
  33 # A .xu script is like .xr, but *do* create constructors (-Ur flag).
  34 # A .xn script is for linking with -n flag (mix text and data on same page).
  35 # A .xN script is for linking with -N flag (mix text and data on same page).
  36
  37 THIS_TEXT_START_ADDR=${TEXT_START_ADDR}
  38 SEGMENT_SIZE=${SEGMENT_SIZE-${PAGE_SIZE}}
  39
  40 DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
  41 FILTER_SCRIPT=""
  42 (. ${srcdir}/${SCRIPT_NAME}.sc-sh) | sed -e '/^ *$/d' | ./mkscript \
  43   >${EMULATION_NAME}.xr
  44 CONSTRUCTING=
  45 (. ${srcdir}/${SCRIPT_NAME}.sc-sh) | sed -e '/^ *$/d' | ./mkscript \
  46   >${EMULATION_NAME}.xu
  47 RELOCATING=
  48 (. ${srcdir}/${SCRIPT_NAME}.sc-sh) | sed -e '/^ *$/d' | ./mkscript \
  49   >${EMULATION_NAME}.x
  50 THIS_TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}}
  51 (. ${srcdir}/${SCRIPT_NAME}.sc-sh) | sed -e '/^ *$/d' | ./mkscript \
  52   >${EMULATION_NAME}.xn
  53 DATA_ALIGNMENT="."
  54 (. ${srcdir}/${SCRIPT_NAME}.sc-sh) | sed -e '/^ *$/d' | ./mkscript \
  55   >${EMULATION_NAME}.xN
  56
  57 #sed -e s/"<ldtarget>"/${EMULATION_NAME}/g -e s/"<arch>"/${ARCH}/g \
  58 # -e s/"<target>"/${EMULATION_NAME}/g -e s/"<target_name>"/${OUTPUT_FORMAT}/g \
  59 # <${srcdir}/${TEMPLATE_NAME-ldtemplate} >ld__${EMULATION_NAME}.c
  60
  61 . ${srcdir}/${TEMPLATE_NAME-generic}.em