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
|
#!/bin/sh
#
# allow us to do flat processing if the flag -Wl,-elf2flt or -elf2flt to
# the 'C' compiler or linker respectively
#
# uses the env. var FLTFLAGS as extra parameters to pass to elf2flt
# arguments given like -Wl,-elf2flt="-b 10000 -v" are given before FLTFLAGS
#
# Copyright (C) 2002,2003 David McCullough <davidm@snapgear.com>
# Copyright (C) 2000, Lineo. davidm@lineo.com
#
# This is Free Software, under the GNU Public Licence v2 or greater.
#
LINKER="$0.real" # the original renamed-linker
ELF2FLT="`expr $0 : '\(.*\)ld'`elf2flt"
NM="`expr $0 : '\(.*\)ld'`nm"
TOOLDIR="`dirname $0`" # let gcc find the tools for us
OBJCOPY="`expr $0 : '\(.*\)ld'`objcopy"
[ -f "$OBJCOPY" ] || OBJCOPY="$TOOLDIR/../../bin/@target_alias@-objcopy"
OBJDUMP="`expr $OBJCOPY : '\(.*\)objcopy'`objdump"
LDSCRIPTPATH="@binutils_ldscript_dir@" # and the scripts
SHARED_ID=""
NEWLDSCRIPT=""
# check TOOLDIR from prefix/bin/ or prefix/target-alias/bin/
[ -d "${LDSCRIPTPATH}" ] || LDSCRIPTPATH="${TOOLDIR}/../lib"
#
# if we have the elf2flt options, run it
#
if expr "$*" : ".*-elf2flt.*" > /dev/null
then
ARG1=
ARG2=
OFILE="a.out"
PIC=
SDIRS=
LDSCRIPT=
FINAL="yes"
FINAL_ONLY=
MOVDAT=
VERBOSE=
while [ $# -ne 0 ]
do
case "$1" in
-elf2flt) ;; # we already know this
-elf2flt*)FLTFLAGS="`expr \"$1\" : '-elf2flt=\(.*\)'` $FLTFLAGS";;
-move-rodata)
MOVDAT="y";; # Put rodata in ROM if possible
-shared-lib-id)
shift; SHARED_ID="$1";; # Shared library ID
-o) shift; OFILE="$1";; # the final outfile
-o*) OFILE="`expr \"$1\" : '-o\(.*\)'`";;
-T) shift; LDSCRIPT="$1";; # they have a linker script
-c) shift; LDSCRIPT="$1";;
-L) ARG1="$ARG1 $1" # remember search dirs
shift;
ARG1="$ARG1 $1"
SDIRS="$SDIRS -L$1"
;;
-L*) ARG1="$ARG1 $1"; SDIRS="$SDIRS $1";;
-EB) ARG1="$ARG1 $1"; SDIRS="$SDIRS $1";; # arm big endian
-relax) ;; # eat this for microblaze
-r|-Ur) FINAL="" # this is not a final link
ARG1="$ARG1 $1"
;;
-v) ARG1="$ARG1 $1"
VERBOSE="y"
;;
-m) shift; EMUL="-m $1";; # ld emulations for h8300
-m*) EMUL=$1;;
*) ARG1="$ARG1 $1"
;;
esac
shift
done
if [ "$FINAL" = "yes" ]
then
[ "$VERBOSE" = "y" ] && set -x
ARG1="$ARG1 $FINAL_ONLY"
NEWLDSCRIPT=`mktemp /tmp/flt-XXXXXX`
SEDOP=" -e s/^R_RODAT// -e /^W_RODAT/d"
OBJCOPYOP=""
if [ "$MOVDAT" ]
then
$LINKER -r -d -o "$OFILE.elf2flt" $ARG1 || exit $?
if [ "`$OBJDUMP -h "$OFILE.elf2flt" | \
egrep -A1 '[.]rodata' | grep RELOC`" ]
then
echo "warning: .rodata section contains relocations"
else
SEDOP="-e /^R_RODAT/d -e s/^W_RODAT//"
fi
fi
if [ "$SHARED_ID" ]
then
# Massage the linker script into something useful. These
# regexps are ugly due to some bizzare shell quoting rules.
# SEDOP="$SEDOP -e \"s/ORIGIN = 0x0,/ORIGIN = 0x${SHARED_ID}000000,/\""
# SEDOP="$SEDOP -e \"s/.text 0x0 :/.text 0x${SHARED_ID}000000 :/\""
SEDOP="$SEDOP -e s/\\(ORIGIN.=.0\\)x0,/\\1x${SHARED_ID}000000,/"
SEDOP="$SEDOP -e s/\\([.]text.0\\)x0[^0-9]:/\\1x${SHARED_ID}000000:/"
if [ "$SHARED_ID" -gt 0 ]
then
# Non application modules enter via main not _start
# SEDOP="$SEDOP -e 's/ENTRY (_start)/ENTRY (main)/'"
SEDOP="$SEDOP -e s/\\(ENTRY.\\)(_start)/\1(lib_main)/"
OBJCOPYOP="--localize-hidden --weaken"
fi
# Provide the magic parameter that defines the library data segment pointer offset
case "@target_cpu@" in
h8300) GOT_OFFSET="__current_shared_library_er5_offset_";;
*) GOT_OFFSET="_current_shared_library_a5_offset_";;
esac
ARG1="$ARG1 -defsym $GOT_OFFSET=`expr ${SHARED_ID} '*' -4 - 4`"
fi
if [ "@emit_relocs@" = "yes" ]
then
SEDOP="$SEDOP -e s/^SINGLE_LINK://"
else
SEDOP="$SEDOP -e /^SINGLE_LINK:/d"
fi
# provide a default linker script, we usually need one
[ -z "$LDSCRIPT" ] && LDSCRIPT="${LDSCRIPTPATH}/elf2flt.ld"
# if we can find the linker script we preprocess it, otherwise
# we assume the user knows what they are doing
if [ -f "$LDSCRIPT" ]; then
sed $SEDOP < "$LDSCRIPT" > "$NEWLDSCRIPT"
LDSCRIPT="$NEWLDSCRIPT"
elif [ -f "${LDSCRIPTPATH}/$LDSCRIPT" ]; then
sed $SEDOP < "${LDSCRIPTPATH}/$LDSCRIPT" > "$NEWLDSCRIPT"
LDSCRIPT="$NEWLDSCRIPT"
elif [ -f "${LDSCRIPTPATH}/ldscripts/$LDSCRIPT" ]; then
sed $SEDOP < "${LDSCRIPTPATH}/ldscripts/$LDSCRIPT" > "$NEWLDSCRIPT"
LDSCRIPT="$NEWLDSCRIPT"
fi
if [ "@emit_relocs@" = "yes" ]
then
$LINKER $EMUL $SDIRS -T $LDSCRIPT -q -o "$OFILE.gdb" $ARG1 ||exit $?
RFILE="$OFILE.gdb"
FLTFLAGS="$FLTFLAGS -a"
else
if [ "@got_check@" = "no" ]
then
$LINKER $EMUL $SDIRS -T $LDSCRIPT -Ur -d -o "$OFILE.elf" $ARG1 ||exit $?
$LINKER $EMUL $SDIRS -T $LDSCRIPT -o "$OFILE.gdb" $ARG1 ||exit $?
else
$LINKER $EMUL -r -d -o "$OFILE.elf2flt" $ARG1 ||exit $?
$LINKER $EMUL $SDIRS -T $LDSCRIPT -Ur -o "$OFILE.elf" "$OFILE.elf2flt" ||exit $?
$LINKER $EMUL $SDIRS -T $LDSCRIPT -o "$OFILE.gdb" "$OFILE.elf2flt" ||exit $?
rm -f "$OFILE.elf2flt"
fi
RFILE="$OFILE.elf"
fi
if $NM "$OFILE.gdb" | grep _GLOBAL_OFFSET_TABLE_ > /dev/null
then
$ELF2FLT $FLTFLAGS -o "$OFILE" -p "$OFILE.gdb" "$RFILE" || exit $?
else
$ELF2FLT $FLTFLAGS -o "$OFILE" -r "$RFILE" || exit $?
fi
if [ "$OBJCOPYOP" ]
then
if $OBJCOPY $OBJCOPYOP --help > /dev/null 2>&1
then
$OBJCOPY $OBJCOPYOP "$OFILE.gdb" ||exit $?
else
case " $OBJCOPYOP " in
*" --localize-hidden "*)
SYMS=`mktemp /tmp/flt-XXXXXX`
$OBJDUMP --syms "$OFILE.gdb" > "$SYMS" ||exit $?
sed -n 's/.*\(\.hidden\|\.internal\) \(.*\)/-L \2/p' < "$SYMS" > "$SYMS.hidden" ||exit $?
if [ -s "$SYMS.hidden" ]
then
xargs ${VERBOSE:+-t} $OBJCOPY "$OFILE.gdb" < "$SYMS.hidden" ||exit $?
fi
rm -f "$SYMS" "$SYMS.hidden"
;;
esac
case " $OBJCOPYOP " in
*" --weaken "*)
$OBJCOPY --weaken "$OFILE.gdb" ||exit $?
;;
esac
fi
fi
[ "$RFILE" = "$OFILE.gdb" ] || rm -f "$RFILE" # not needed for any reason
rm -f "$NEWLDSCRIPT"
exit 0
fi
exec $LINKER -o "$OFILE" $ARG1
fi
#
# otherwise pretend we aren't here
#
exec $LINKER "$@"
|
