242 lines
8.9 KiB
Bash
Executable File
242 lines
8.9 KiB
Bash
Executable File
#!/bin/sh
|
|
# genscripts.sh - generate the ld-emulation-target specific files
|
|
#
|
|
# Usage: genscripts.sh srcdir libdir host target target_alias \
|
|
# default_emulation native_lib_dirs this_emulation
|
|
#
|
|
# Sample usage:
|
|
# genscripts.sh /djm/ld-devo/devo/ld /usr/local/lib 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
|
|
#
|
|
# $FreeBSD$
|
|
#
|
|
# This is a cut-down version of the GNU script. Instead of jumping through
|
|
# hoops for all possible combinations of paths, just use the libdir
|
|
# argument in place of LIB_PATH.
|
|
#
|
|
# The exec_prefix, target_alias, use_sysroot, NATIVE_LIB_DIRS, TOOL_LIB, CUSTOMIZER_SCRIPT
|
|
# arguments are not used in this version.
|
|
#
|
|
|
|
srcdir=$1
|
|
libdir=$2
|
|
exec_prefix=$3
|
|
host=$4
|
|
target=$5
|
|
target_alias=$6
|
|
EMULATION_LIBPATH=$7
|
|
NATIVE_LIB_DIRS=$8
|
|
use_sysroot=$9
|
|
shift 9
|
|
EMULATION_NAME=$1
|
|
TOOL_LIB=$2
|
|
CUSTOMIZER_SCRIPT=$3
|
|
|
|
# Create the 'CUSTOMIZER_SCRIPT' knob to better sync this script with
|
|
# FSF BU ver 2.15 which allows for a more generic emulparams processing.
|
|
# To reduce the diff, I also include the ${EMULATION_NAME} parameter in uses
|
|
# of 'CUSTOMIZER_SCRIPT'.
|
|
|
|
# XXX: arm hack : until those file are merged back into the FSF repo, just
|
|
# use the version in this directory.
|
|
if !(test -f ${CUSTOMIZER_SCRIPT}"";) then
|
|
CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${EMULATION_NAME}.sh"
|
|
fi
|
|
|
|
# Include the emulation-specific parameters:
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
|
|
|
if test -d ldscripts; then
|
|
true
|
|
else
|
|
rm -f ldscripts
|
|
mkdir ldscripts
|
|
fi
|
|
|
|
# Set some flags for the emultempl scripts. USE_LIBPATH will
|
|
# be set for any libpath-using emulation; NATIVE will be set for a
|
|
# emulation to enable 'LD_LIBRARY_PATH=/foo:/bar ld -lfooz'
|
|
if [ "x${host}" = "x${target}" ] ; then
|
|
NATIVE=yes
|
|
fi
|
|
USE_LIBPATH=yes
|
|
|
|
# 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=":".
|
|
|
|
LIB_SEARCH_DIRS=`echo ${libdir} | 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=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}}
|
|
|
|
# Determine DATA_ALIGNMENT for the 5 variants, using
|
|
# values specified in the emulparams/<script_to_run>.sh file or default.
|
|
|
|
DATA_ALIGNMENT_="${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 */"
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
|
. ${srcdir}/scripttempl/${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 */"
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
|
. ${srcdir}/scripttempl/${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 */"
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
|
. ${srcdir}/scripttempl/${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 */"
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
|
. ${srcdir}/scripttempl/${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 */"
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
|
. ${srcdir}/scripttempl/${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 */"
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xc
|
|
rm -f ${COMBRELOC}
|
|
LD_FLAG=w
|
|
RELRO_NOW=" "
|
|
COMBRELOC=ldscripts/${EMULATION_NAME}.xw.tmp
|
|
( echo "/* Script for -z combreloc -z now -z relro: combine and sort reloc sections */"
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xw
|
|
rm -f ${COMBRELOC}
|
|
COMBRELOC=
|
|
unset RELRO_NOW
|
|
fi
|
|
|
|
if test -n "$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 */"
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
|
. ${srcdir}/scripttempl/${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}.xsc.tmp
|
|
( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsc
|
|
rm -f ${COMBRELOC}
|
|
LD_FLAG=wshared
|
|
RELRO_NOW=" "
|
|
COMBRELOC=ldscripts/${EMULATION_NAME}.xsw.tmp
|
|
( echo "/* Script for --shared -z combreloc -z now -z relro: shared library, combine & sort relocs */"
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsw
|
|
rm -f ${COMBRELOC}
|
|
COMBRELOC=
|
|
unset RELRO_NOW
|
|
fi
|
|
unset CREATE_SHLIB
|
|
fi
|
|
|
|
if test -n "$GENERATE_PIE_SCRIPT"; then
|
|
LD_FLAG=pie
|
|
DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
|
|
CREATE_PIE=" "
|
|
# Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
|
|
(
|
|
echo "/* Script for ld -pie: link position independent executable */"
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xd
|
|
if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
|
|
LD_FLAG=cpie
|
|
DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
|
|
COMBRELOC=ldscripts/${EMULATION_NAME}.xdc.tmp
|
|
( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */"
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xdc
|
|
rm -f ${COMBRELOC}
|
|
LD_FLAG=wpie
|
|
RELRO_NOW=" "
|
|
COMBRELOC=ldscripts/${EMULATION_NAME}.xdw.tmp
|
|
( echo "/* Script for -pie -z combreloc -z now -z relro: position independent executable, combine & sort relocs */"
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xdw
|
|
rm -f ${COMBRELOC}
|
|
COMBRELOC=
|
|
unset RELRO_NOW
|
|
fi
|
|
unset CREATE_PIE
|
|
fi
|
|
|
|
case " $EMULATION_LIBPATH " in
|
|
*" ${EMULATION_NAME} "*) COMPILE_IN=true;;
|
|
esac
|
|
|
|
# Generate e${EMULATION_NAME}.c.
|
|
. ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em
|