| 1 |
205 |
julius |
#! /bin/sh
|
| 2 |
|
|
# Embed an SPU ELF executable into a PowerPC object file.
|
| 3 |
|
|
#
|
| 4 |
|
|
# Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
|
| 5 |
|
|
#
|
| 6 |
|
|
# This file is part of GNU Binutils.
|
| 7 |
|
|
#
|
| 8 |
|
|
# This program is free software; you can redistribute it and/or modify
|
| 9 |
|
|
# it under the terms of the GNU General Public License as published by
|
| 10 |
|
|
# the Free Software Foundation; either version 3 of the License, or
|
| 11 |
|
|
# (at your option) any later version.
|
| 12 |
|
|
#
|
| 13 |
|
|
# This program is distributed in the hope that it will be useful,
|
| 14 |
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 15 |
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 16 |
|
|
# GNU General Public License for more details.
|
| 17 |
|
|
#
|
| 18 |
|
|
# You should have received a copy of the GNU General Public License
|
| 19 |
|
|
# along with this program; if not, write to the Free Software
|
| 20 |
|
|
# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
|
| 21 |
|
|
# 02110-1301, USA.
|
| 22 |
|
|
|
| 23 |
|
|
usage ()
|
| 24 |
|
|
{
|
| 25 |
|
|
echo "Usage: embedspu [flags] symbol_name input_filename output_filename"
|
| 26 |
|
|
echo
|
| 27 |
|
|
echo " input_filename: SPU ELF executable to be embedded"
|
| 28 |
|
|
echo " output_filename: Resulting PowerPC object file"
|
| 29 |
|
|
echo " symbol_name: Name of program handle struct to be defined"
|
| 30 |
|
|
echo " flags: GCC flags defining PowerPC object file format"
|
| 31 |
|
|
echo " (e.g. -m32 or -m64)"
|
| 32 |
|
|
exit 1
|
| 33 |
|
|
}
|
| 34 |
|
|
|
| 35 |
|
|
program_transform_name=
|
| 36 |
|
|
mydir=`dirname "$0"`
|
| 37 |
|
|
|
| 38 |
|
|
find_prog ()
|
| 39 |
|
|
{
|
| 40 |
|
|
prog=`echo $1 | sed "$program_transform_name"`
|
| 41 |
|
|
prog="$mydir/$prog"
|
| 42 |
|
|
test -x "$prog" && return 0
|
| 43 |
|
|
prog="$mydir/$1"
|
| 44 |
|
|
test -x "$prog" && return 0
|
| 45 |
|
|
prog=`echo $1 | sed "$program_transform_name"`
|
| 46 |
|
|
which $prog > /dev/null 2> /dev/null && return 0
|
| 47 |
|
|
return 1
|
| 48 |
|
|
}
|
| 49 |
|
|
|
| 50 |
|
|
SYMBOL=
|
| 51 |
|
|
INFILE=
|
| 52 |
|
|
OUTFILE=
|
| 53 |
|
|
FLAGS=
|
| 54 |
|
|
|
| 55 |
|
|
parse_args ()
|
| 56 |
|
|
{
|
| 57 |
|
|
while test -n "$1"; do
|
| 58 |
|
|
case "$1" in
|
| 59 |
|
|
-*) FLAGS="${FLAGS} $1" ;;
|
| 60 |
|
|
*) if test -z "$SYMBOL"; then
|
| 61 |
|
|
SYMBOL="$1"
|
| 62 |
|
|
elif test -z "$INFILE"; then
|
| 63 |
|
|
INFILE="$1"
|
| 64 |
|
|
elif test -z "$OUTFILE"; then
|
| 65 |
|
|
OUTFILE="$1"
|
| 66 |
|
|
else
|
| 67 |
|
|
echo "Too many arguments!"
|
| 68 |
|
|
usage
|
| 69 |
|
|
fi ;;
|
| 70 |
|
|
esac
|
| 71 |
|
|
shift
|
| 72 |
|
|
done
|
| 73 |
|
|
if test -z "$OUTFILE"; then
|
| 74 |
|
|
usage
|
| 75 |
|
|
fi
|
| 76 |
|
|
if test ! -r "$INFILE"; then
|
| 77 |
|
|
echo "${INFILE}: File not found"
|
| 78 |
|
|
usage
|
| 79 |
|
|
fi
|
| 80 |
|
|
}
|
| 81 |
|
|
|
| 82 |
|
|
main ()
|
| 83 |
|
|
{
|
| 84 |
|
|
parse_args "$@"
|
| 85 |
|
|
|
| 86 |
|
|
# Find a powerpc gcc. Support running from a combined tree build.
|
| 87 |
|
|
if test -x "$mydir/../gcc/xgcc"; then
|
| 88 |
|
|
CC="$mydir/../gcc/xgcc -B$mydir/../gcc/"
|
| 89 |
|
|
else
|
| 90 |
|
|
find_prog gcc
|
| 91 |
|
|
if test $? -ne 0; then
|
| 92 |
|
|
echo "Cannot find $prog"
|
| 93 |
|
|
exit 1
|
| 94 |
|
|
fi
|
| 95 |
|
|
CC="$prog"
|
| 96 |
|
|
fi
|
| 97 |
|
|
|
| 98 |
|
|
# Find readelf. Any old readelf should do.
|
| 99 |
|
|
find_prog readelf
|
| 100 |
|
|
if test $? -ne 0; then
|
| 101 |
|
|
if which readelf > /dev/null 2> /dev/null; then
|
| 102 |
|
|
prog=readelf
|
| 103 |
|
|
else
|
| 104 |
|
|
echo "Cannot find $prog"
|
| 105 |
|
|
exit 1
|
| 106 |
|
|
fi
|
| 107 |
|
|
fi
|
| 108 |
|
|
READELF="$prog"
|
| 109 |
|
|
|
| 110 |
|
|
# Sanity check the input file
|
| 111 |
|
|
if ! ${READELF} -h ${INFILE} | grep 'Class:.*ELF32' >/dev/null 2>/dev/null \
|
| 112 |
|
|
|| ! ${READELF} -h ${INFILE} | grep 'Type:.*EXEC' >/dev/null 2>/dev/null \
|
| 113 |
|
|
|| ! ${READELF} -h ${INFILE} | egrep 'Machine:.*(SPU|17)' >/dev/null 2>/dev/null
|
| 114 |
|
|
then
|
| 115 |
|
|
echo "${INFILE}: Does not appear to be an SPU executable"
|
| 116 |
|
|
exit 1
|
| 117 |
|
|
fi
|
| 118 |
|
|
|
| 119 |
|
|
toe=`${READELF} -S ${INFILE} | sed -n -e 's, *\[ *\([0-9]*\)\] *\.toe *[PROGN]*BITS *\([0-9a-f]*\).*,\1 \2,p'`
|
| 120 |
|
|
toe_addr=`echo $toe | sed -n -e 's,.* ,,p'`
|
| 121 |
|
|
toe=`echo $toe | sed -n -e 's, .*,,p'`
|
| 122 |
|
|
has_ea=`${READELF} -S ${INFILE} | sed -n -e 's, *\[ *\([0-9]*\)\] *\._ea *PROGBITS.*,\1,p'`
|
| 123 |
|
|
# For loaded sections, pick off section number, address, and file offset
|
| 124 |
|
|
sections=`${READELF} -S ${INFILE} | sed -n -e 's, *\[ *\([0-9]*\)\] *[^ ]* *PROGBITS *\([0-9a-f]*\) *\([0-9a-f]*\).*,\1 \2 \3,p'`
|
| 125 |
|
|
sections=`echo ${sections}`
|
| 126 |
|
|
# For relocation sections, pick off file offset and info (points to
|
| 127 |
|
|
# section where relocs apply)
|
| 128 |
|
|
relas=`${READELF} -S ${INFILE} | sed -n -e 's, *\[ *[0-9]*\] *[^ ]* *RELA *[0-9a-f]* *0*\([0-9a-f][0-9a-f]*\).* \([0-9a-f][0-9a-f]*\) *[0-9a-f][0-9a-f]*$,\1 \2,p'`
|
| 129 |
|
|
relas=`echo ${relas}`
|
| 130 |
|
|
|
| 131 |
|
|
# Build embedded SPU image.
|
| 132 |
|
|
# 1. The whole SPU ELF file is written to .rodata.speelf
|
| 133 |
|
|
# 2. Symbols starting with the string "_EAR_" in the SPU ELF image are
|
| 134 |
|
|
# special. They allow an SPU program to access corresponding symbols
|
| 135 |
|
|
# (ie. minus the _EAR_ prefix), in the PowerPC program. _EAR_ without
|
| 136 |
|
|
# a suffix is used to refer to the addrress of the SPU image in
|
| 137 |
|
|
# PowerPC address space. _EAR_* symbols must all be defined in .toe
|
| 138 |
|
|
# at 16 byte intervals, or they must be defined in other non-bss
|
| 139 |
|
|
# sections.
|
| 140 |
|
|
# Find all _EAR_ symbols in .toe using readelf, sort by address, and
|
| 141 |
|
|
# write the address of the corresponding PowerPC symbol in a table
|
| 142 |
|
|
# built in .data.spetoe. For _EAR_ symbols not in .toe, create
|
| 143 |
|
|
# .reloc commands to relocate their location directly.
|
| 144 |
|
|
# 3. Look for R_SPU_PPU32 and R_SPU_PPU64 relocations in the SPU ELF image
|
| 145 |
|
|
# and create .reloc commands for them.
|
| 146 |
|
|
# 4. Write a struct spe_program_handle to .data.
|
| 147 |
|
|
# 5. Write a table of _SPUEAR_ symbols.
|
| 148 |
|
|
${CC} ${FLAGS} -x assembler-with-cpp -nostartfiles -nostdlib \
|
| 149 |
|
|
-Wa,-mbig -Wa,-noexecstack -Wl,-r -Wl,-x -o ${OUTFILE} - <<EOF
|
| 150 |
|
|
.section .data.spetoe,"aw",@progbits
|
| 151 |
|
|
.p2align 7
|
| 152 |
|
|
__spetoe__:
|
| 153 |
|
|
`${READELF} -s -W ${INFILE} | grep ' _EAR_' | sort -k 2 | awk \
|
| 154 |
|
|
'BEGIN { \
|
| 155 |
|
|
addr = strtonum ("0x" "'${toe_addr:-0}'"); \
|
| 156 |
|
|
split ("'"${sections}"'", s, " "); \
|
| 157 |
|
|
for (i = 1; i in s; i += 3) { \
|
| 158 |
|
|
sec_off[s[i]] = strtonum ("0x" s[i+2]) - strtonum ("0x" s[i+1]); \
|
| 159 |
|
|
} \
|
| 160 |
|
|
} \
|
| 161 |
|
|
$7 == "'${toe}'" && strtonum ("0x" $2) != addr { \
|
| 162 |
|
|
print "#error Symbol " $8 " not in 16 byte element toe array!"; \
|
| 163 |
|
|
} \
|
| 164 |
|
|
$7 == "'${toe}'" { \
|
| 165 |
|
|
addr = addr + 16; \
|
| 166 |
|
|
} \
|
| 167 |
|
|
$7 == "'${toe}'" { \
|
| 168 |
|
|
print "#ifdef _LP64"; \
|
| 169 |
|
|
print " .quad " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)) ", 0"; \
|
| 170 |
|
|
print "#else"; \
|
| 171 |
|
|
print " .int 0, " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)) ", 0, 0"; \
|
| 172 |
|
|
print "#endif"; \
|
| 173 |
|
|
} \
|
| 174 |
|
|
$7 != "'${toe}'" && $7 in sec_off { \
|
| 175 |
|
|
print "#ifdef _LP64"; \
|
| 176 |
|
|
print " .reloc __speelf__+" strtonum ("0x" $2) + sec_off[$7] ", R_PPC64_ADDR64, " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)); \
|
| 177 |
|
|
print "#else"; \
|
| 178 |
|
|
print " .reloc __speelf__+" strtonum ("0x" $2) + sec_off[$7] + 4 ", R_PPC_ADDR32, " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)); \
|
| 179 |
|
|
print "#endif"; \
|
| 180 |
|
|
if (!donedef) { print "#define HAS_RELOCS 1"; donedef = 1; }; \
|
| 181 |
|
|
} \
|
| 182 |
|
|
$7 != "'${toe}'" && ! $7 in sec_off { \
|
| 183 |
|
|
print "#error Section not found for " $8; \
|
| 184 |
|
|
} \
|
| 185 |
|
|
'`
|
| 186 |
|
|
`test -z "${relas}" || ${READELF} -r -W ${INFILE} | awk \
|
| 187 |
|
|
'BEGIN { \
|
| 188 |
|
|
split ("'"${sections}"'", s, " "); \
|
| 189 |
|
|
for (i = 1; i in s; i += 3) { \
|
| 190 |
|
|
sec_off[s[i]] = strtonum ("0x" s[i+2]) - strtonum ("0x" s[i+1]); \
|
| 191 |
|
|
} \
|
| 192 |
|
|
split ("'"${relas}"'", s, " "); \
|
| 193 |
|
|
for (i = 1; i in s; i += 2) { \
|
| 194 |
|
|
rela[s[i]] = strtonum (s[i+1]); \
|
| 195 |
|
|
} \
|
| 196 |
|
|
} \
|
| 197 |
|
|
/^Relocation section/ { \
|
| 198 |
|
|
sec = substr($6, 3); \
|
| 199 |
|
|
} \
|
| 200 |
|
|
$3 ~ /R_SPU_PPU/ { \
|
| 201 |
|
|
print "#ifdef _LP64"; \
|
| 202 |
|
|
print " .reloc __speelf__+" strtonum ("0x" $1) + sec_off[rela[sec]] ", R_PPC64_ADDR" substr($3, 10) ", " ($5 != "" ? $5 "+0x" $7 : "__speelf__ + 0x" $4); \
|
| 203 |
|
|
print "#else"; \
|
| 204 |
|
|
print " .reloc __speelf__+" strtonum ("0x" $1) + sec_off[rela[sec]] + (substr($3, 10) == "64" ? 4 : 0)", R_PPC_ADDR32, " ($5 != "" ? $5 "+0x" $7 : "__speelf__ + 0x" $4); \
|
| 205 |
|
|
print "#endif"; \
|
| 206 |
|
|
if (!donedef) { print "#define HAS_RELOCS 1"; donedef = 1; }; \
|
| 207 |
|
|
} \
|
| 208 |
|
|
$3 ~ /unrecognized:/ { \
|
| 209 |
|
|
print "#ifdef _LP64"; \
|
| 210 |
|
|
print " .reloc __speelf__+" strtonum ("0x" $1) + sec_off[rela[sec]] ", R_PPC64_ADDR" ($4 == "f" ? "64" : "32") ", " ($6 != "" ? $6 "+0x" $8 : "__speelf__ + 0x" $5); \
|
| 211 |
|
|
print "#else"; \
|
| 212 |
|
|
print " .reloc __speelf__+" strtonum ("0x" $1) + sec_off[rela[sec]] + ($4 == "f" ? 4 : 0)", R_PPC_ADDR32, " ($6 != "" ? $6 "+0x" $8 : "__speelf__ + 0x" $5); \
|
| 213 |
|
|
print "#endif"; \
|
| 214 |
|
|
if (!donedef) { print "#define HAS_RELOCS 1"; donedef = 1; }; \
|
| 215 |
|
|
} \
|
| 216 |
|
|
'`
|
| 217 |
|
|
#if ${has_ea:-0}
|
| 218 |
|
|
.section .data.speelf,"aw",@progbits
|
| 219 |
|
|
#elif defined (HAS_RELOCS) && (defined (__PIC__) || defined (__PIE__))
|
| 220 |
|
|
.section .data.rel.ro.speelf,"a",@progbits
|
| 221 |
|
|
#else
|
| 222 |
|
|
.section .rodata.speelf,"a",@progbits
|
| 223 |
|
|
#endif
|
| 224 |
|
|
.p2align 7
|
| 225 |
|
|
__speelf__:
|
| 226 |
|
|
.incbin "${INFILE}"
|
| 227 |
|
|
|
| 228 |
|
|
.section .data.spehandle,"aw",@progbits
|
| 229 |
|
|
.globl ${SYMBOL}
|
| 230 |
|
|
.type ${SYMBOL}, @object
|
| 231 |
|
|
# fill in a struct spe_program_handle
|
| 232 |
|
|
#ifdef _LP64
|
| 233 |
|
|
.p2align 3
|
| 234 |
|
|
${SYMBOL}:
|
| 235 |
|
|
.int 24
|
| 236 |
|
|
.int 0
|
| 237 |
|
|
.quad __speelf__
|
| 238 |
|
|
.quad __spetoe__
|
| 239 |
|
|
#else
|
| 240 |
|
|
.p2align 2
|
| 241 |
|
|
${SYMBOL}:
|
| 242 |
|
|
.int 12
|
| 243 |
|
|
.int __speelf__
|
| 244 |
|
|
.int __spetoe__
|
| 245 |
|
|
#endif
|
| 246 |
|
|
.size ${SYMBOL}, . - ${SYMBOL}
|
| 247 |
|
|
|
| 248 |
|
|
`${READELF} -s -W ${INFILE} | grep ' _SPUEAR_' | sort -k 2 | awk \
|
| 249 |
|
|
'{ \
|
| 250 |
|
|
print " .globl '${SYMBOL}'_" substr($8, 9); \
|
| 251 |
|
|
print " .type '${SYMBOL}'_" substr($8, 9) ", @object"; \
|
| 252 |
|
|
print " .size '${SYMBOL}'_" substr($8, 9) ", 4"; \
|
| 253 |
|
|
print "'${SYMBOL}'_" substr($8, 9) ":"; \
|
| 254 |
|
|
print " .int 0x" $2; \
|
| 255 |
|
|
} \
|
| 256 |
|
|
'`
|
| 257 |
|
|
EOF
|
| 258 |
|
|
}
|
| 259 |
|
|
|
| 260 |
|
|
main "$@"
|
