2 # Embed an SPU ELF executable into a PowerPC object file.
4 # Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
6 # This file is part of GNU Binutils.
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.
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.
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
25 echo "Usage: embedspu [flags] symbol_name input_filename output_filename"
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)"
35 program_transform_name
=
40 prog
=`echo $1 | sed "$program_transform_name"`
42 test -x "$prog" && return 0
44 test -x "$prog" && return 0
45 prog
=`echo $1 | sed "$program_transform_name"`
46 which $prog > /dev
/null
2> /dev
/null
&& return 0
57 while test -n "$1"; do
59 -*) FLAGS
="${FLAGS} $1" ;;
60 *) if test -z "$SYMBOL"; then
62 elif test -z "$INFILE"; then
64 elif test -z "$OUTFILE"; then
67 echo "Too many arguments!"
73 if test -z "$OUTFILE"; then
76 if test ! -r "$INFILE"; then
77 echo "${INFILE}: File not found"
86 # Find a powerpc gcc. Support running from a combined tree build.
87 if test -x "$mydir/../gcc/xgcc"; then
88 CC
="$mydir/../gcc/xgcc -B$mydir/../gcc/"
91 if test $?
-ne 0; then
92 echo "Cannot find $prog"
98 # Find readelf. Any old readelf should do.
100 if test $?
-ne 0; then
101 if which readelf
> /dev
/null
2> /dev
/null
; then
104 echo "Cannot find $prog"
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 ${INFILE} |
egrep 'Machine:.*(SPU|17)' >/dev
/null
2>/dev
/null
115 echo "${INFILE}: Does not appear to be an SPU executable"
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}`
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
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 ${OUTFILE} - <<EOF
150 .section .data.spetoe,"aw",@progbits
153 `${READELF} -s -W ${INFILE} | grep ' _EAR_' | sort -k 2 | awk \
155 addr = strtonum ("0x" "'${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]); \
161 $7 == "'${toe}'" && strtonum ("0x" $2) != addr { \
162 print "#error Symbol " $8 " not in 16 byte element toe array!"; \
168 print "#ifdef _LP64"; \
169 print " .quad " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)) ", 0"; \
171 print " .int 0, " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)) ", 0, 0"; \
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)); \
178 print " .reloc __speelf__+" strtonum ("0x" $2) + sec_off[$7] + 4 ", R_PPC_ADDR32, " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)); \
180 if (!donedef) { print "#define HAS_RELOCS 1"; donedef = 1; }; \
182 $7 != "'${toe}'" && ! $7 in sec_off { \
183 print "#error Section not found for " $8; \
186 `test -z "${relas}" || ${READELF} -r -W ${INFILE} | awk \
188 split ("'"${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]); \
192 split ("'"${relas}"'", s, " "); \
193 for (i = 1; i in s; i += 2) { \
194 rela[s[i]] = strtonum (s[i+1]); \
197 /^Relocation section/ { \
198 sec = substr($6, 3); \
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); \
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); \
206 if (!donedef) { print "#define HAS_RELOCS 1"; donedef = 1; }; \
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); \
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); \
214 if (!donedef) { print "#define HAS_RELOCS 1"; donedef = 1; }; \
218 .section .data.speelf,"aw",@progbits
219 #elif defined (HAS_RELOCS) && (defined (__PIC__) || defined (__PIE__))
220 .section .data.rel.ro.speelf,"a",@progbits
222 .section .rodata.speelf,"a",@progbits
228 .section .data.spehandle,"aw",@progbits
230 .type ${SYMBOL}, @object
231 # fill in a struct spe_program_handle
246 .size ${SYMBOL}, . - ${SYMBOL}
248 `${READELF} -s -W ${INFILE} | grep ' _SPUEAR_' | sort -k 2 | awk \
250 print " .globl '${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; \
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