File: genscripts.sh

package info (click to toggle)
binutils 2.25.1-7
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 240,664 kB
  • sloc: ansic: 1,329,744; asm: 553,510; cpp: 110,550; exp: 58,489; makefile: 52,218; sh: 19,523; yacc: 14,700; lisp: 13,606; perl: 1,791; lex: 1,626; pascal: 307; sed: 195; python: 154; awk: 26
file content (440 lines) | stat: -rwxr-xr-x 14,279 bytes parent folder | download | duplicates (5)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
#!/bin/sh
# genscripts.sh - generate the ld-emulation-target specific files
# Copyright (C) 2004-2014 Free Software Foundation, Inc.
#
# This file is part of the Gnu Linker.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GLD; see the file COPYING.  If not, write to the Free
# Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
# 02110-1301, USA.
#
# Usage: genscripts_extra.sh \
#          srcdir \
#          libdir \
#          prefix \
#          exec_prefix \
#          host \
#          target \
#          target_alias \
#          default_emulation \
#          native_lib_dirs \
#          use_sysroot \
#          enable_initfini_array \
#          this_emulation \
# optional:
#          tool_dir
#
# Sample usage:
#
#   genscripts_extra.sh \
#    /sources/ld \
#    /usr/local/lib \
#    /usr/local \
#    /usr/local \
#    sparc-sun-sunos4.1.3 \
#    sparc-sun-sunos4.1.3 \
#    sparc-sun-sunos4.1.3 \
#    sun4 \
#    "" \
#    no \
#    sun3 \
#    sparc-sun-sunos4.1.3 \
#    sparc.sh
#
# produces the linker scripts:
#
#   sun3.x       [default linker script]
#   sun3.xbn     [used when the linker is invoked with "-N"]
#   sun3.xn      [used when the linker is invoked with "-n"]
#   sun3.xr      [used when the linker is invoked with "-r"]
#   sun3.xu      [used when the linker is invoked with "-Ur"]
# and maybe:
#   sun3.xc      [used when the linker is invoked with "-z combreloc"]
#   sun3.xsc     [used when the linker is invoked with "--shared"]
#   sun3.xdc     [used when the linker is invoked with "-pie"]
#   sun3.xa      [used when the linker is invoked with "--enable-auto-import"]
#
# It also produced the C source file:
#
#   em_sun3.c
#
# which is then compiled into the linker.
#
# The linker scripts are created by running the shell script
# /sources/ld/emulparams/sparc.sh to set the value of ${SCRIPT_NAME}
# (and any other variables it wants to).  ${SCRIPT_NAME} is then
# invoked with a variable called ${LD_FLAG} to tell it which version
# of the linker script to create.


srcdir=$1
libdir=$2
prefix=$3
exec_prefix=$4
host=$5
target=$6
target_alias=$7
EMULATION_LIBPATH=$8
NATIVE_LIB_DIRS=$9
shift 9
use_sysroot=$1
ENABLE_INITFINI_ARRAY=$2
EMULATION_NAME=$3
TOOL_LIB=$4

# Include the emulation-specific parameters:
CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${EMULATION_NAME}.sh"
. ${CUSTOMIZER_SCRIPT}

if test -d ldscripts; then
  true
else
  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
# libpath-using emulation where ${host} = ${target}.  NATIVE
# may already have been set by the emulparams file, but that's OK
# (it'll just get set to "yes" twice).

case " $EMULATION_LIBPATH " in
  *" ${EMULATION_NAME} "*)
    if [ "x${host}" = "x${target}" ] ; then
      NATIVE=yes
      USE_LIBPATH=yes
    elif [ "x${use_sysroot}" = "xyes" ] ; then
      USE_LIBPATH=yes
    fi
    ;;
esac

# If the emulparams file sets NATIVE, make sure USE_LIBPATH is set also.
if test "x$NATIVE" = "xyes" ; then
  USE_LIBPATH=yes
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 we are using a sysroot, prefix library paths with "=" to indicate this.
#
# If the emulparams file set LIBPATH_SUFFIX, prepend an extra copy of
# the library path with the suffix applied.

# Paths with LIBPATH_SUFFIX
lib_path1=
# Paths without LIBPATH_SUFFIX
lib_path2=
if [ "${LIB_PATH}" != ":" ] ; then
  lib_path2=${LIB_PATH}
fi

# Add args to lib_path1 and lib_path2, discarding any duplicates
append_to_lib_path()
{
  if [ $# != 0 ]; then
    for lib in "$@"; do
      # The "=" is harmless if we aren't using a sysroot, but also needless.
      if [ "x${use_sysroot}" = "xyes" ] ; then
	lib="=${lib}"
      fi
      skip_lib=no
      if test -n "${LIBPATH_SUFFIX}"; then
	case "${lib}" in
	  *${LIBPATH_SUFFIX})
	    case :${lib_path1}: in
	      *:${lib}:*) ;;
	      ::) lib_path1=${lib} ;;
	      *) lib_path1=${lib_path1}:${lib} ;;
	    esac ;;
	  *)
	    if test -n "${LIBPATH_SUFFIX_SKIP}"; then
	      case "${lib}" in
		*${LIBPATH_SUFFIX_SKIP}) skip_lib=yes ;;
	      esac
	    fi
	    if test "${skip_lib}" = "no"; then
	      case :${lib_path1}: in
		*:${lib}${LIBPATH_SUFFIX}:*) ;;
		::) lib_path1=${lib}${LIBPATH_SUFFIX} ;;
	        *) lib_path1=${lib_path1}:${lib}${LIBPATH_SUFFIX} ;;
	      esac
	    fi ;;
	esac
      fi
      if test "${skip_lib}" = "no"; then
	case :${lib_path1}:${lib_path2}: in
	  *:${lib}:*) ;;
	  *::) lib_path2=${lib} ;;
	  *) lib_path2=${lib_path2}:${lib} ;;
	esac
      fi
    done
  fi
}

# Always search $(tooldir)/lib, aka /usr/local/TARGET/lib when native
# except when LIBPATH=":".
if [ "${LIB_PATH}" != ":" ] ; then
  libs=
  if [ "x${TOOL_LIB}" = "x" ] ; then
    if [ "x${NATIVE}" = "xyes" ] ; then
      libs="${exec_prefix}/${target_alias}/lib"
    fi
  else
    # For multilib'ed targets, ensure both ${target_alias}/lib${LIBPATH_SUFFIX}
    # and ${TOOL_LIB}/lib${LIBPATH_SUFFIX} are in the default search path,
    # because 64bit libraries may be in both places, depending on
    # cross-development setup method (e.g.: /usr/s390x-linux/lib64
    # vs. /usr/s390-linux/lib64)
    case "${NATIVE}:${LIBPATH_SUFFIX}:${TOOL_LIB}" in
      :* | *::* | *:*:*${LIBPATH_SUFFIX}) ;;
      *) libs="${exec_prefix}/${target_alias}/lib${LIBPATH_SUFFIX}" ;;
    esac
    libs="${exec_prefix}/${TOOL_LIB}/lib ${libs}"
  fi
  append_to_lib_path ${libs}
fi

if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then
  libs=${NATIVE_LIB_DIRS}
  if [ "x${NATIVE}" = "xyes" ] ; then
    case " ${libs} " in
      *" ${libdir} "*) ;;
      *) libs="${libdir} ${libs}" ;;
    esac
  fi
  append_to_lib_path ${libs}
fi

case :${lib_path1}:${lib_path2}: in
  *:: | ::*) LIB_PATH=${lib_path1}${lib_path2} ;;
  *) LIB_PATH=${lib_path1}:${lib_path2} ;;
esac

LIB_SEARCH_DIRS=`echo ${LIB_PATH} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`

# We need it for testsuite.
set $EMULATION_LIBPATH
if [ "x$1" = "x$EMULATION_NAME" ]; then
    test -d tmpdir || mkdir tmpdir
    rm -f tmpdir/libpath.exp
    echo "set libpath \"${LIB_PATH}\"" | sed -e 's/:/ /g' > tmpdir/libpath.exp
fi

# 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}
  . ${srcdir}/scripttempl/${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}
  . ${srcdir}/scripttempl/${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}
  . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.x

LD_FLAG=n
DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
( echo "/* Script for -n: mix text and data on same page */"
  . ${CUSTOMIZER_SCRIPT}
  . ${srcdir}/scripttempl/${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}
  . ${srcdir}/scripttempl/${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}
    . ${srcdir}/scripttempl/${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}
    . ${srcdir}/scripttempl/${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=" "
  (
    echo "/* Script for ld --shared: link shared library */"
    . ${CUSTOMIZER_SCRIPT}
    . ${srcdir}/scripttempl/${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}
      . ${srcdir}/scripttempl/${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}
      . ${srcdir}/scripttempl/${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=" "
  (
    echo "/* Script for ld -pie: link position independent executable */"
    . ${CUSTOMIZER_SCRIPT}
    . ${srcdir}/scripttempl/${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}
      . ${srcdir}/scripttempl/${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}
      . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
    ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xdw
    rm -f ${COMBRELOC}
    COMBRELOC=
    unset RELRO_NOW
  fi
  unset CREATE_PIE
fi

if test -n "$GENERATE_AUTO_IMPORT_SCRIPT"; then
  LD_FLAG=auto_import
  DATA_ALIGNMENT=${DATA_ALIGNMENT_}
  (
    echo "/* Script for ld --enable-auto-import: Like the default script except read only data is placed into .data  */"
    . ${CUSTOMIZER_SCRIPT}
    . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
  ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xa
fi

case "$COMPILE_IN: $EMULATION_LIBPATH " in
    :*" ${EMULATION_NAME} "*) COMPILE_IN=yes;;
esac

# PR ld/5652:
# Determine if the shell has support for the variable BASH_LINENO.
# When it is the case, it is only available inside functions.
has_lineno()
{
  test "x$BASH_LINENO" != "x"
}

# Enable accruate error source in the compiler error messages, if possible.
if has_lineno; then
  . ${srcdir}/genscrba.sh
else
  source_em()
  {
    . $1
  }
  fragment()
  {
    cat >> e${EMULATION_NAME}.c
  }
fi

# Generate e${EMULATION_NAME}.c.
# Start with an empty file, then the sourced .em script
# can use the "fragment" function to append.
> e${EMULATION_NAME}.c
source_em ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em