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Diffstat (limited to 'binutils-2.25/binutils/embedspu.sh')
| -rw-r--r-- | binutils-2.25/binutils/embedspu.sh | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/binutils-2.25/binutils/embedspu.sh b/binutils-2.25/binutils/embedspu.sh new file mode 100644 index 00000000..8b19e766 --- /dev/null +++ b/binutils-2.25/binutils/embedspu.sh @@ -0,0 +1,260 @@ +#! /bin/sh +# Embed an SPU ELF executable into a PowerPC object file. +# +# Copyright 2006, 2007, 2008 Free Software Foundation, Inc. +# +# This file is part of GNU Binutils. +# +# 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 of the License, 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 this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA +# 02110-1301, USA. + +usage () +{ + echo "Usage: embedspu [flags] symbol_name input_filename output_filename" + echo + echo " input_filename: SPU ELF executable to be embedded" + echo " output_filename: Resulting PowerPC object file" + echo " symbol_name: Name of program handle struct to be defined" + echo " flags: GCC flags defining PowerPC object file format" + echo " (e.g. -m32 or -m64)" + exit 1 +} + +program_transform_name= +mydir=`dirname "$0"` + +find_prog () +{ + prog=`echo $1 | sed "$program_transform_name"` + prog="$mydir/$prog" + test -x "$prog" && return 0 + prog="$mydir/$1" + test -x "$prog" && return 0 + prog=`echo $1 | sed "$program_transform_name"` + which $prog > /dev/null 2> /dev/null && return 0 + return 1 +} + +SYMBOL= +INFILE= +OUTFILE= +FLAGS= + +parse_args () +{ + while test -n "$1"; do + case "$1" in + -*) FLAGS="${FLAGS} $1" ;; + *) if test -z "$SYMBOL"; then + SYMBOL="$1" + elif test -z "$INFILE"; then + INFILE="$1" + elif test -z "$OUTFILE"; then + OUTFILE="$1" + else + echo "Too many arguments!" + usage + fi ;; + esac + shift + done + if test -z "$OUTFILE"; then + usage + fi + if test ! -r "$INFILE"; then + echo "${INFILE}: File not found" + usage + fi +} + +main () +{ + parse_args "$@" + + # Find a powerpc gcc. Support running from a combined tree build. + if test -x "$mydir/../gcc/xgcc"; then + CC="$mydir/../gcc/xgcc -B$mydir/../gcc/" + else + find_prog gcc + if test $? -ne 0; then + echo "Cannot find $prog" + exit 1 + fi + CC="$prog" + fi + + # Find readelf. Any old readelf should do. + find_prog readelf + if test $? -ne 0; then + if which readelf > /dev/null 2> /dev/null; then + prog=readelf + else + echo "Cannot find $prog" + exit 1 + fi + fi + READELF="$prog" + + # Sanity check the input file + if ! ${READELF} -h ${INFILE} | grep 'Class:.*ELF32' >/dev/null 2>/dev/null \ + || ! ${READELF} -h ${INFILE} | grep 'Type:.*EXEC' >/dev/null 2>/dev/null \ + || ! ${READELF} -h ${INFILE} | egrep 'Machine:.*(SPU|17)' >/dev/null 2>/dev/null + then + echo "${INFILE}: Does not appear to be an SPU executable" + exit 1 + fi + + toe=`${READELF} -S ${INFILE} | sed -n -e 's, *\[ *\([0-9]*\)\] *\.toe *[PROGN]*BITS *\([0-9a-f]*\).*,\1 \2,p'` + toe_addr=`echo $toe | sed -n -e 's,.* ,,p'` + toe=`echo $toe | sed -n -e 's, .*,,p'` + has_ea=`${READELF} -S ${INFILE} | sed -n -e 's, *\[ *\([0-9]*\)\] *\._ea *PROGBITS.*,\1,p'` + # For loaded sections, pick off section number, address, and file offset + sections=`${READELF} -S ${INFILE} | sed -n -e 's, *\[ *\([0-9]*\)\] *[^ ]* *PROGBITS *\([0-9a-f]*\) *\([0-9a-f]*\).*,\1 \2 \3,p'` + sections=`echo ${sections}` + # For relocation sections, pick off file offset and info (points to + # section where relocs apply) + relas=`${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'` + relas=`echo ${relas}` + + # Build embedded SPU image. + # 1. The whole SPU ELF file is written to .rodata.speelf + # 2. Symbols starting with the string "_EAR_" in the SPU ELF image are + # special. They allow an SPU program to access corresponding symbols + # (ie. minus the _EAR_ prefix), in the PowerPC program. _EAR_ without + # a suffix is used to refer to the addrress of the SPU image in + # PowerPC address space. _EAR_* symbols must all be defined in .toe + # at 16 byte intervals, or they must be defined in other non-bss + # sections. + # Find all _EAR_ symbols in .toe using readelf, sort by address, and + # write the address of the corresponding PowerPC symbol in a table + # built in .data.spetoe. For _EAR_ symbols not in .toe, create + # .reloc commands to relocate their location directly. + # 3. Look for R_SPU_PPU32 and R_SPU_PPU64 relocations in the SPU ELF image + # and create .reloc commands for them. + # 4. Write a struct spe_program_handle to .data. + # 5. Write a table of _SPUEAR_ symbols. + ${CC} ${FLAGS} -x assembler-with-cpp -nostartfiles -nostdlib \ + -Wa,-mbig -Wa,-noexecstack -Wl,-r -Wl,-x -o ${OUTFILE} - <<EOF + .section .data.spetoe,"aw",@progbits + .p2align 7 +__spetoe__: +`${READELF} -s -W ${INFILE} | grep ' _EAR_' | sort -k 2 | awk \ +'BEGIN { \ + addr = strtonum ("0x" "'${toe_addr:-0}'"); \ + split ("'"${sections}"'", s, " "); \ + for (i = 1; i in s; i += 3) { \ + sec_off[s[i]] = strtonum ("0x" s[i+2]) - strtonum ("0x" s[i+1]); \ + } \ +} \ +$7 == "'${toe}'" && strtonum ("0x" $2) != addr { \ + print "#error Symbol " $8 " not in 16 byte element toe array!"; \ +} \ +$7 == "'${toe}'" { \ + addr = addr + 16; \ +} \ +$7 == "'${toe}'" { \ + print "#ifdef _LP64"; \ + print " .quad " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)) ", 0"; \ + print "#else"; \ + print " .int 0, " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)) ", 0, 0"; \ + print "#endif"; \ +} \ +$7 != "'${toe}'" && $7 in sec_off { \ + print "#ifdef _LP64"; \ + print " .reloc __speelf__+" strtonum ("0x" $2) + sec_off[$7] ", R_PPC64_ADDR64, " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)); \ + print "#else"; \ + print " .reloc __speelf__+" strtonum ("0x" $2) + sec_off[$7] + 4 ", R_PPC_ADDR32, " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)); \ + print "#endif"; \ + if (!donedef) { print "#define HAS_RELOCS 1"; donedef = 1; }; \ +} \ +$7 != "'${toe}'" && ! $7 in sec_off { \ + print "#error Section not found for " $8; \ +} \ +'` +`test -z "${relas}" || ${READELF} -r -W ${INFILE} | awk \ +'BEGIN { \ + split ("'"${sections}"'", s, " "); \ + for (i = 1; i in s; i += 3) { \ + sec_off[s[i]] = strtonum ("0x" s[i+2]) - strtonum ("0x" s[i+1]); \ + } \ + split ("'"${relas}"'", s, " "); \ + for (i = 1; i in s; i += 2) { \ + rela[s[i]] = strtonum (s[i+1]); \ + } \ +} \ +/^Relocation section/ { \ + sec = substr($6, 3); \ +} \ +$3 ~ /R_SPU_PPU/ { \ + print "#ifdef _LP64"; \ + print " .reloc __speelf__+" strtonum ("0x" $1) + sec_off[rela[sec]] ", R_PPC64_ADDR" substr($3, 10) ", " ($5 != "" ? $5 "+0x" $7 : "__speelf__ + 0x" $4); \ + print "#else"; \ + 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); \ + print "#endif"; \ + if (!donedef) { print "#define HAS_RELOCS 1"; donedef = 1; }; \ +} \ +$3 ~ /unrecognized:/ { \ + print "#ifdef _LP64"; \ + print " .reloc __speelf__+" strtonum ("0x" $1) + sec_off[rela[sec]] ", R_PPC64_ADDR" ($4 == "f" ? "64" : "32") ", " ($6 != "" ? $6 "+0x" $8 : "__speelf__ + 0x" $5); \ + print "#else"; \ + print " .reloc __speelf__+" strtonum ("0x" $1) + sec_off[rela[sec]] + ($4 == "f" ? 4 : 0)", R_PPC_ADDR32, " ($6 != "" ? $6 "+0x" $8 : "__speelf__ + 0x" $5); \ + print "#endif"; \ + if (!donedef) { print "#define HAS_RELOCS 1"; donedef = 1; }; \ +} \ +'` +#if ${has_ea:-0} + .section .data.speelf,"aw",@progbits +#elif defined (HAS_RELOCS) && (defined (__PIC__) || defined (__PIE__)) + .section .data.rel.ro.speelf,"a",@progbits +#else + .section .rodata.speelf,"a",@progbits +#endif + .p2align 7 +__speelf__: + .incbin "${INFILE}" + + .section .data.spehandle,"aw",@progbits + .globl ${SYMBOL} + .type ${SYMBOL}, @object +# fill in a struct spe_program_handle +#ifdef _LP64 + .p2align 3 +${SYMBOL}: + .int 24 + .int 0 + .quad __speelf__ + .quad __spetoe__ +#else + .p2align 2 +${SYMBOL}: + .int 12 + .int __speelf__ + .int __spetoe__ +#endif + .size ${SYMBOL}, . - ${SYMBOL} + +`${READELF} -s -W ${INFILE} | grep ' _SPUEAR_' | sort -k 2 | awk \ +'{ \ + print " .globl '${SYMBOL}'_" substr($8, 9); \ + print " .type '${SYMBOL}'_" substr($8, 9) ", @object"; \ + print " .size '${SYMBOL}'_" substr($8, 9) ", 4"; \ + print "'${SYMBOL}'_" substr($8, 9) ":"; \ + print " .int 0x" $2; \ +} \ +'` +EOF +} + +main "$@" |