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aafdb207 NC |
1 | #!/bin/sh |
2 | # genscripts_extra.sh - A copy of genscripts.sh with the ability to accept | |
3 | # a second optional parameter - the name of the script to run in order to | |
4 | # customise the linker scripts generated for a particular emulation. | |
5 | # This allows targets with large numbers of similar emulations to only | |
6 | # have one script to customise them all. | |
7 | # | |
8 | # Usage: genscripts_extra.sh \ | |
9 | # srcdir \ | |
10 | # libdir \ | |
11 | # exec_prefix \ | |
12 | # host \ | |
13 | # target \ | |
14 | # target_alias \ | |
15 | # default_emulation \ | |
16 | # native_lib_dirs \ | |
17 | # use_sysroot \ | |
18 | # this_emulation | |
19 | # optional: | |
20 | # tool_dir | |
21 | # customizer_script | |
22 | # | |
23 | # Sample usage: | |
24 | # | |
25 | # genscripts_extra.sh \ | |
26 | # /sources/ld \ | |
27 | # /usr/local/lib \ | |
28 | # /usr/local \ | |
29 | # sparc-sun-sunos4.1.3 \ | |
30 | # sparc-sun-sunos4.1.3 \ | |
31 | # sparc-sun-sunos4.1.3 \ | |
32 | # sun4 \ | |
33 | # "" \ | |
34 | # no \ | |
35 | # sun3 \ | |
36 | # sparc-sun-sunos4.1.3 | |
37 | # sparc.sh | |
38 | # | |
39 | # produces the linker scripts: | |
40 | # | |
41 | # sun3.x [default linker script] | |
42 | # sun3.xbn [used when the linker is invoked with "-N"] | |
43 | # sun3.xn [used when the linker is invoked with "-n"] | |
44 | # sun3.xr [used when the linker is invoked with "-r"] | |
45 | # sun3.xu [used when the linker is invoked with "-Ur"] | |
46 | # and maybe: | |
47 | # sun3.xc [used when the linker is invoked with "-z combreloc"] | |
48 | # sun3.xsc [used when the linker is invoked with "--shared"] | |
49 | # sun3.xdc [used when the linker is invoked with "-pie"] | |
50 | # | |
51 | # It also produced the C source file: | |
52 | # | |
53 | # em_sun3.c | |
54 | # | |
55 | # which is then compiled into the linker. | |
56 | # | |
57 | # The linker scripts are created by running the shell script | |
58 | # /sources/ld/emulparams/sparc.sh to set the value of ${SCRIPT_NAME} | |
59 | # (and any other variables it wants to). ${SCRIPT_NAME} is then | |
60 | # invoked with a variable called ${LD_FLAG} to tell it which version | |
61 | # of the linker script to create. | |
62 | ||
63 | ||
64 | srcdir=$1 | |
65 | libdir=$2 | |
66 | exec_prefix=$3 | |
67 | host=$4 | |
68 | target=$5 | |
69 | target_alias=$6 | |
70 | EMULATION_LIBPATH=$7 | |
71 | NATIVE_LIB_DIRS=$8 | |
72 | use_sysroot=$9 | |
73 | shift 9 | |
74 | EMULATION_NAME=$1 | |
75 | TOOL_LIB=$2 | |
76 | CUSTOMIZER_SCRIPT=$3 | |
77 | shift | |
78 | # Can't use ${1:-$target_alias} here due to an Ultrix shell bug. | |
79 | if [ "x$TOOL_LIB" = "x" ] ; then | |
80 | tool_lib=${exec_prefix}/${target_alias}/lib | |
81 | else | |
82 | tool_lib=${exec_prefix}/$TOOL_LIB/lib | |
83 | fi | |
84 | ||
85 | if [ "x${CUSTOMIZER_SCRIPT}" = "x" ] ; then | |
86 | CUSTOMIZER_SCRIPT=${EMULATION_NAME} | |
87 | fi | |
88 | ||
89 | # Include the emulation-specific parameters: | |
90 | . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME} | |
91 | ||
92 | if test -d ldscripts; then | |
93 | true | |
94 | else | |
95 | mkdir ldscripts | |
96 | fi | |
97 | ||
98 | # Set some flags for the emultempl scripts. USE_LIBPATH will | |
99 | # be set for any libpath-using emulation; NATIVE will be set for a | |
100 | # libpath-using emulation where ${host} = ${target}. NATIVE | |
101 | # may already have been set by the emulparams file, but that's OK | |
102 | # (it'll just get set to "yes" twice). | |
103 | ||
104 | case " $EMULATION_LIBPATH " in | |
105 | *" ${EMULATION_NAME} "*) | |
106 | if [ "x${host}" = "x${target}" ] ; then | |
107 | NATIVE=yes | |
108 | USE_LIBPATH=yes | |
109 | elif [ "x${use_sysroot}" = "xyes" ] ; then | |
110 | USE_LIBPATH=yes | |
111 | fi | |
112 | ;; | |
113 | esac | |
114 | ||
115 | # If the emulparams file sets NATIVE, make sure USE_LIBPATH is set also. | |
116 | if test "x$NATIVE" = "xyes" ; then | |
117 | USE_LIBPATH=yes | |
118 | fi | |
119 | ||
120 | # Set the library search path, for libraries named by -lfoo. | |
121 | # If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used. | |
122 | # Otherwise, the default is set here. | |
123 | # | |
124 | # The format is the usual list of colon-separated directories. | |
125 | # To force a logically empty LIB_PATH, do LIBPATH=":". | |
126 | # | |
127 | # If we are using a sysroot, prefix library paths with "=" to indicate this. | |
128 | # | |
129 | # If the emulparams file set LIBPATH_SUFFIX, prepend an extra copy of | |
130 | # the library path with the suffix applied. | |
131 | ||
132 | if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then | |
133 | LIB_PATH2= | |
134 | if [ x"$use_sysroot" != xyes ] ; then | |
135 | LIB_PATH2=${libdir} | |
136 | fi | |
137 | for lib in ${NATIVE_LIB_DIRS}; do | |
138 | # The "=" is harmless if we aren't using a sysroot, but also needless. | |
139 | if [ "x${use_sysroot}" = "xyes" ] ; then | |
140 | lib="=${lib}" | |
141 | fi | |
142 | addsuffix= | |
143 | case "${LIBPATH_SUFFIX}:${lib}" in | |
144 | :*) ;; | |
145 | *:*${LIBPATH_SUFFIX}) ;; | |
146 | *) addsuffix=yes ;; | |
147 | esac | |
148 | if test -n "$addsuffix"; then | |
149 | case :${LIB_PATH}: in | |
150 | *:${lib}${LIBPATH_SUFFIX}:*) ;; | |
151 | ::) LIB_PATH=${lib}${LIBPATH_SUFFIX} ;; | |
152 | *) LIB_PATH=${LIB_PATH}:${lib}${LIBPATH_SUFFIX} ;; | |
153 | esac | |
154 | case :${LIB_PATH}:${LIB_PATH2}: in | |
155 | *:${lib}:*) ;; | |
156 | *::) LIB_PATH2=${lib} ;; | |
157 | *) LIB_PATH2=${LIB_PATH2}:${lib} ;; | |
158 | esac | |
159 | else | |
160 | case :${LIB_PATH2}: in | |
161 | *:${lib}:*) ;; | |
162 | ::) LIB_PATH2=${lib} ;; | |
163 | *) LIB_PATH2=${LIB_PATH2}:${lib} ;; | |
164 | esac | |
165 | fi | |
166 | done | |
167 | case :${LIB_PATH}:${LIB_PATH2}: in | |
168 | *:: | ::*) LIB_PATH=${LIB_PATH}${LIB_PATH2} ;; | |
169 | *) LIB_PATH=${LIB_PATH}:${LIB_PATH2} ;; | |
170 | esac | |
171 | fi | |
172 | ||
173 | ||
174 | # Always search $(tooldir)/lib, aka /usr/local/TARGET/lib, except for | |
175 | # sysrooted configurations and when LIBPATH=":". | |
176 | if [ "x${use_sysroot}" != "xyes" ] ; then | |
177 | case :${LIB_PATH}: in | |
178 | ::: | *:${tool_lib}:*) ;; | |
179 | ::) LIB_PATH=${tool_lib} ;; | |
180 | *) LIB_PATH=${tool_lib}:${LIB_PATH} ;; | |
181 | esac | |
182 | fi | |
183 | ||
184 | LIB_SEARCH_DIRS=`echo ${LIB_PATH} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'` | |
185 | ||
186 | # We need it for testsuite. | |
187 | case " $EMULATION_LIBPATH " in | |
188 | *" ${EMULATION_NAME} "*) | |
189 | test -d tmpdir || mkdir tmpdir | |
190 | test -f tmpdir/libpath.exp || \ | |
191 | echo "set libpath \"${LIB_PATH}\"" | sed -e 's/:/ /g' > tmpdir/libpath.exp | |
192 | ;; | |
193 | esac | |
194 | ||
195 | # Generate 5 or 6 script files from a master script template in | |
196 | # ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6 | |
197 | # script files is actually used depends on command line options given | |
198 | # to ld. (SCRIPT_NAME was set in the emulparams_file.) | |
199 | # | |
200 | # A .x script file is the default script. | |
201 | # A .xr script is for linking without relocation (-r flag). | |
202 | # A .xu script is like .xr, but *do* create constructors (-Ur flag). | |
203 | # A .xn script is for linking with -n flag (mix text and data on same page). | |
204 | # A .xbn script is for linking with -N flag (mix text and data on same page). | |
205 | # A .xs script is for generating a shared library with the --shared | |
206 | # flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the | |
207 | # emulation parameters. | |
208 | # A .xc script is for linking with -z combreloc; it is only generated if | |
209 | # $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or | |
210 | # $SCRIPT_NAME is "elf". | |
211 | # A .xsc script is for linking with --shared -z combreloc; it is generated | |
212 | # if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or | |
213 | # $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation | |
214 | # parameters too. | |
215 | ||
216 | if [ "x$SCRIPT_NAME" = "xelf" ]; then | |
217 | GENERATE_COMBRELOC_SCRIPT=yes | |
218 | fi | |
219 | ||
220 | SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}} | |
221 | ||
222 | # Determine DATA_ALIGNMENT for the 5 variants, using | |
223 | # values specified in the emulparams/<script_to_run>.sh file or default. | |
224 | ||
225 | DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}" | |
226 | DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}" | |
227 | DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}" | |
228 | DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}" | |
229 | DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}" | |
230 | ||
231 | LD_FLAG=r | |
232 | DATA_ALIGNMENT=${DATA_ALIGNMENT_r} | |
233 | DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})" | |
234 | ( echo "/* Script for ld -r: link without relocation */" | |
235 | . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME} | |
236 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc | |
237 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xr | |
238 | ||
239 | LD_FLAG=u | |
240 | DATA_ALIGNMENT=${DATA_ALIGNMENT_u} | |
241 | CONSTRUCTING=" " | |
242 | ( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */" | |
243 | . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME} | |
244 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc | |
245 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xu | |
246 | ||
247 | LD_FLAG= | |
248 | DATA_ALIGNMENT=${DATA_ALIGNMENT_} | |
249 | RELOCATING=" " | |
250 | ( echo "/* Default linker script, for normal executables */" | |
251 | . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME} | |
252 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc | |
253 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.x | |
254 | ||
255 | LD_FLAG=n | |
256 | DATA_ALIGNMENT=${DATA_ALIGNMENT_n} | |
257 | TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}} | |
258 | ( echo "/* Script for -n: mix text and data on same page */" | |
259 | . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME} | |
260 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc | |
261 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xn | |
262 | ||
263 | LD_FLAG=N | |
264 | DATA_ALIGNMENT=${DATA_ALIGNMENT_N} | |
265 | ( echo "/* Script for -N: mix text and data on same page; don't align data */" | |
266 | . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME} | |
267 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc | |
268 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xbn | |
269 | ||
270 | if test -n "$GENERATE_COMBRELOC_SCRIPT"; then | |
271 | DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}} | |
272 | LD_FLAG=c | |
273 | COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp | |
274 | ( echo "/* Script for -z combreloc: combine and sort reloc sections */" | |
275 | . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME} | |
276 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc | |
277 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xc | |
278 | rm -f ${COMBRELOC} | |
279 | COMBRELOC= | |
280 | fi | |
281 | ||
282 | if test -n "$GENERATE_SHLIB_SCRIPT"; then | |
283 | LD_FLAG=shared | |
284 | DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}} | |
285 | CREATE_SHLIB=" " | |
286 | # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR. | |
287 | ( | |
288 | echo "/* Script for ld --shared: link shared library */" | |
289 | . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME} | |
290 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc | |
291 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xs | |
292 | if test -n "$GENERATE_COMBRELOC_SCRIPT"; then | |
293 | LD_FLAG=cshared | |
294 | DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}} | |
295 | COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp | |
296 | ( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */" | |
297 | . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME} | |
298 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc | |
299 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsc | |
300 | rm -f ${COMBRELOC} | |
301 | COMBRELOC= | |
302 | fi | |
303 | unset CREATE_SHLIB | |
304 | fi | |
305 | ||
306 | if test -n "$GENERATE_PIE_SCRIPT"; then | |
307 | LD_FLAG=pie | |
308 | DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}} | |
309 | CREATE_PIE=" " | |
310 | # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR. | |
311 | ( | |
312 | echo "/* Script for ld -pie: link position independent executable */" | |
313 | . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME} | |
314 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc | |
315 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xd | |
316 | if test -n "$GENERATE_COMBRELOC_SCRIPT"; then | |
317 | LD_FLAG=cpie | |
318 | DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}} | |
319 | COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp | |
320 | ( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */" | |
321 | . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME} | |
322 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc | |
323 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xdc | |
324 | rm -f ${COMBRELOC} | |
325 | COMBRELOC= | |
326 | fi | |
327 | unset CREATE_PIE | |
328 | fi | |
329 | ||
330 | case " $EMULATION_LIBPATH " in | |
331 | *" ${EMULATION_NAME} "*) COMPILE_IN=true;; | |
332 | esac | |
333 | ||
334 | # Generate e${EMULATION_NAME}.c. | |
335 | . ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em |