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