binutils/embedspu.sh - binutils-gdb - Git at Google

 #! /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 "$@"
	#! /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 "$@"