| 1 | #!/bin/sh |
| 2 | # genscripts.sh - generate the ld-emulation-target specific files |
| 3 | # |
| 4 | # Usage: genscripts.sh srcdir libdir exec_prefix \ |
| 5 | # host target target_alias default_emulation \ |
| 6 | # native_lib_dirs this_emulation tool_dir |
| 7 | # |
| 8 | # Sample usage: |
| 9 | # genscripts.sh /djm/ld-devo/devo/ld /usr/local/lib /usr/local \ |
| 10 | # sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sun4 \ |
| 11 | # "" sun3 sparc-sun-sunos4.1.3 |
| 12 | # produces sun3.x sun3.xbn sun3.xn sun3.xr sun3.xu em_sun3.c |
| 13 | |
| 14 | srcdir=$1 |
| 15 | libdir=$2 |
| 16 | exec_prefix=$3 |
| 17 | host=$4 |
| 18 | target=$5 |
| 19 | target_alias=$6 |
| 20 | EMULATION_LIBPATH=$7 |
| 21 | NATIVE_LIB_DIRS=$8 |
| 22 | EMULATION_NAME=$9 |
| 23 | shift 9 |
| 24 | # Can't use ${1:-$target_alias} here due to an Ultrix shell bug. |
| 25 | if [ "x$1" = "x" ] ; then |
| 26 | tool_lib=${exec_prefix}/${target_alias}/lib |
| 27 | else |
| 28 | tool_lib=${exec_prefix}/$1/lib |
| 29 | fi |
| 30 | |
| 31 | # Include the emulation-specific parameters: |
| 32 | . ${srcdir}/emulparams/${EMULATION_NAME}.sh |
| 33 | |
| 34 | if test -d ldscripts; then |
| 35 | true |
| 36 | else |
| 37 | mkdir ldscripts |
| 38 | fi |
| 39 | |
| 40 | # Set the library search path, for libraries named by -lfoo. |
| 41 | # If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used. |
| 42 | # Otherwise, the default is set here. |
| 43 | # |
| 44 | # The format is the usual list of colon-separated directories. |
| 45 | # To force a logically empty LIB_PATH, do LIBPATH=":". |
| 46 | |
| 47 | if [ "x${LIB_PATH}" = "x" ] ; then |
| 48 | # Cross, or native non-default emulation not requesting LIB_PATH. |
| 49 | LIB_PATH= |
| 50 | |
| 51 | if [ "x${host}" = "x${target}" ] ; then |
| 52 | case " $EMULATION_LIBPATH " in |
| 53 | *" ${EMULATION_NAME} "*) |
| 54 | # Native, and default or emulation requesting LIB_PATH. |
| 55 | LIB_PATH=/lib:/usr/lib |
| 56 | if [ -n "${NATIVE_LIB_DIRS}" ]; then |
| 57 | LIB_PATH=${LIB_PATH}:${NATIVE_LIB_DIRS} |
| 58 | fi |
| 59 | if [ "${libdir}" != /usr/lib ]; then |
| 60 | LIB_PATH=${LIB_PATH}:${libdir} |
| 61 | fi |
| 62 | if [ "${libdir}" != /usr/local/lib ] ; then |
| 63 | LIB_PATH=${LIB_PATH}:/usr/local/lib |
| 64 | fi |
| 65 | esac |
| 66 | fi |
| 67 | fi |
| 68 | |
| 69 | # Always search $(tooldir)/lib, aka /usr/local/TARGET/lib. |
| 70 | LIB_PATH=${LIB_PATH}:${tool_lib} |
| 71 | |
| 72 | LIB_SEARCH_DIRS=`echo ${LIB_PATH} | tr ':' ' ' | sed -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\1);/g'` |
| 73 | |
| 74 | # Generate 5 or 6 script files from a master script template in |
| 75 | # ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6 |
| 76 | # script files is actually used depends on command line options given |
| 77 | # to ld. (SCRIPT_NAME was set in the emulparams_file.) |
| 78 | # |
| 79 | # A .x script file is the default script. |
| 80 | # A .xr script is for linking without relocation (-r flag). |
| 81 | # A .xu script is like .xr, but *do* create constructors (-Ur flag). |
| 82 | # A .xn script is for linking with -n flag (mix text and data on same page). |
| 83 | # A .xbn script is for linking with -N flag (mix text and data on same page). |
| 84 | # A .xs script is for generating a shared library with the --shared |
| 85 | # flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the |
| 86 | # emulation parameters. |
| 87 | # A .xc script is for linking with -z combreloc; it is only generated if |
| 88 | # $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or |
| 89 | # $SCRIPT_NAME is "elf". |
| 90 | # A .xsc script is for linking with --shared -z combreloc; it is generated |
| 91 | # if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or |
| 92 | # $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation |
| 93 | # parameters too. |
| 94 | |
| 95 | if [ "x$SCRIPT_NAME" = "xelf" ]; then |
| 96 | GENERATE_COMBRELOC_SCRIPT=yes |
| 97 | fi |
| 98 | |
| 99 | SEGMENT_SIZE=${SEGMENT_SIZE-${TARGET_PAGE_SIZE}} |
| 100 | |
| 101 | # Determine DATA_ALIGNMENT for the 5 variants, using |
| 102 | # values specified in the emulparams/<emulation>.sh file or default. |
| 103 | |
| 104 | DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}" |
| 105 | DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}" |
| 106 | DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}" |
| 107 | DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}" |
| 108 | DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}" |
| 109 | |
| 110 | LD_FLAG=r |
| 111 | DATA_ALIGNMENT=${DATA_ALIGNMENT_r} |
| 112 | DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})" |
| 113 | ( echo "/* Script for ld -r: link without relocation */" |
| 114 | . ${srcdir}/emulparams/${EMULATION_NAME}.sh |
| 115 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 116 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xr |
| 117 | |
| 118 | LD_FLAG=u |
| 119 | DATA_ALIGNMENT=${DATA_ALIGNMENT_u} |
| 120 | CONSTRUCTING=" " |
| 121 | ( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */" |
| 122 | . ${srcdir}/emulparams/${EMULATION_NAME}.sh |
| 123 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 124 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xu |
| 125 | |
| 126 | LD_FLAG= |
| 127 | DATA_ALIGNMENT=${DATA_ALIGNMENT_} |
| 128 | RELOCATING=" " |
| 129 | ( echo "/* Default linker script, for normal executables */" |
| 130 | . ${srcdir}/emulparams/${EMULATION_NAME}.sh |
| 131 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 132 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.x |
| 133 | |
| 134 | LD_FLAG=n |
| 135 | DATA_ALIGNMENT=${DATA_ALIGNMENT_n} |
| 136 | TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}} |
| 137 | ( echo "/* Script for -n: mix text and data on same page */" |
| 138 | . ${srcdir}/emulparams/${EMULATION_NAME}.sh |
| 139 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 140 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xn |
| 141 | |
| 142 | LD_FLAG=N |
| 143 | DATA_ALIGNMENT=${DATA_ALIGNMENT_N} |
| 144 | ( echo "/* Script for -N: mix text and data on same page; don't align data */" |
| 145 | . ${srcdir}/emulparams/${EMULATION_NAME}.sh |
| 146 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 147 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xbn |
| 148 | |
| 149 | if test -n "$GENERATE_COMBRELOC_SCRIPT"; then |
| 150 | DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}} |
| 151 | LD_FLAG=c |
| 152 | COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp |
| 153 | ( echo "/* Script for -z combreloc: combine and sort reloc sections */" |
| 154 | . ${srcdir}/emulparams/${EMULATION_NAME}.sh |
| 155 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 156 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xc |
| 157 | rm -f ${COMBRELOC} |
| 158 | COMBRELOC= |
| 159 | fi |
| 160 | |
| 161 | if test -n "$GENERATE_SHLIB_SCRIPT"; then |
| 162 | LD_FLAG=shared |
| 163 | DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}} |
| 164 | CREATE_SHLIB=" " |
| 165 | # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR. |
| 166 | ( |
| 167 | echo "/* Script for ld --shared: link shared library */" |
| 168 | . ${srcdir}/emulparams/${EMULATION_NAME}.sh |
| 169 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 170 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xs |
| 171 | if test -n "$GENERATE_COMBRELOC_SCRIPT"; then |
| 172 | LD_FLAG=cshared |
| 173 | DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}} |
| 174 | COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp |
| 175 | ( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */" |
| 176 | . ${srcdir}/emulparams/${EMULATION_NAME}.sh |
| 177 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 178 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsc |
| 179 | rm -f ${COMBRELOC} |
| 180 | COMBRELOC= |
| 181 | fi |
| 182 | fi |
| 183 | |
| 184 | for i in $EMULATION_LIBPATH ; do |
| 185 | test "$i" = "$EMULATION_NAME" && COMPILE_IN=true |
| 186 | done |
| 187 | |
| 188 | # Generate e${EMULATION_NAME}.c. |
| 189 | . ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em |