2 # genscripts.sh - generate the ld-emulation-target specific files
4 # Usage: genscripts.sh srcdir libdir host target target_alias \
5 # default_emulation native_lib_dirs this_emulation
8 # genscripts.sh /djm/ld-devo/devo/ld /usr/local/lib sparc-sun-sunos4.1.3 \
9 # sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sun4 "" sun3 sparc-sun-sunos4.1.3
10 # produces sun3.x sun3.xbn sun3.xn sun3.xr sun3.xu em_sun3.c
12 # $FreeBSD: src/gnu/usr.bin/binutils/ld/genscripts.sh,v 1.1.2.3 2002/09/01 23:39:14 obrien Exp $
14 # This is a cut-down version of the GNU script. Instead of jumping through
15 # hoops for all possible combinations of paths, just use the libdir
16 # argument in place of LIB_PATH.
18 # The host, target and target_alias arguments are not used in this version.
30 # Include the emulation-specific parameters:
31 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
33 if test -d ldscripts; then
39 # Set the library search path, for libraries named by -lfoo.
40 # If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used.
41 # Otherwise, the default is set here.
43 # The format is the usual list of colon-separated directories.
44 # To force a logically empty LIB_PATH, do LIBPATH=":".
46 LIB_SEARCH_DIRS=`echo ${libdir} | tr ':' ' ' | sed -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\1);/g'`
48 # Generate 5 or 6 script files from a master script template in
49 # ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6
50 # script files is actually used depends on command line options given
51 # to ld. (SCRIPT_NAME was set in the emulparams_file.)
53 # A .x script file is the default script.
54 # A .xr script is for linking without relocation (-r flag).
55 # A .xu script is like .xr, but *do* create constructors (-Ur flag).
56 # A .xn script is for linking with -n flag (mix text and data on same page).
57 # A .xbn script is for linking with -N flag (mix text and data on same page).
58 # A .xs script is for generating a shared library with the --shared
59 # flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
60 # emulation parameters.
61 # A .xc script is for linking with -z combreloc; it is only generated if
62 # $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
63 # $SCRIPT_NAME is "elf".
64 # A .xsc script is for linking with --shared -z combreloc; it is generated
65 # if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
66 # $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation
69 if [ "x$SCRIPT_NAME" = "xelf" ]; then
70 GENERATE_COMBRELOC_SCRIPT=yes
73 SEGMENT_SIZE=${SEGMENT_SIZE-${TARGET_PAGE_SIZE}}
75 # Determine DATA_ALIGNMENT for the 5 variants, using
76 # values specified in the emulparams/<emulation>.sh file or default.
78 DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
79 DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
80 DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
81 DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
82 DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
85 DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
86 DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
87 ( echo "/* Script for ld -r: link without relocation */"
88 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
89 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
90 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xr
93 DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
95 ( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
96 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
97 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
98 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xu
101 DATA_ALIGNMENT=${DATA_ALIGNMENT_}
103 ( echo "/* Default linker script, for normal executables */"
104 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
105 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
106 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.x
109 DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
110 TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}}
111 ( echo "/* Script for -n: mix text and data on same page */"
112 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
113 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
114 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xn
117 DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
118 ( echo "/* Script for -N: mix text and data on same page; don't align data */"
119 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
120 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
121 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xbn
123 if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
124 DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}}
126 COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
127 ( echo "/* Script for -z combreloc: combine and sort reloc sections */"
128 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
129 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
130 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xc
135 if test -n "$GENERATE_SHLIB_SCRIPT"; then
137 DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
139 # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
141 echo "/* Script for ld --shared: link shared library */"
142 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
143 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
144 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xs
145 if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
147 DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
148 COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
149 ( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
150 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
151 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
152 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsc
158 for i in $EMULATION_LIBPATH ; do
159 test "$i" = "$EMULATION_NAME" && COMPILE_IN=true
161 # Generate e${EMULATION_NAME}.c.
162 . ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em