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https://github.com/opnsense/src.git
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97d40d3d4a
us up to version 2.17.50.20070703, at the last GPLv2 commit. Amongst others, this added upstream support for some FreeBSD-specific things that we previously had to manually hack in, such as the OSABI label support, and so on. There are also quite a number of new files, some for cpu's (e.g. SPU) that we may or may not be interested in, but those can be cleaned up later on, if needed.
257 lines
8.2 KiB
Bash
257 lines
8.2 KiB
Bash
#! /bin/sh
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# Embed an SPU ELF executable into a PowerPC object file.
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#
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# Copyright 2006, 2007 Free Software Foundation, Inc.
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#
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# This file is part of GNU Binutils.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
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# 02110-1301, USA.
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usage ()
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{
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echo "Usage: embedspu [flags] symbol_name input_filename output_filename"
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echo
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echo " input_filename: SPU ELF executable to be embedded"
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echo " output_filename: Resulting PowerPC object file"
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echo " symbol_name: Name of program handle struct to be defined"
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echo " flags: GCC flags defining PowerPC object file format"
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echo " (e.g. -m32 or -m64)"
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exit 1
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}
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program_transform_name=
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mydir=`dirname "$0"`
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find_prog ()
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{
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prog=`echo $1 | sed "$program_transform_name"`
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prog="$mydir/$prog"
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test -x "$prog" && return 0
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prog="$mydir/$1"
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test -x "$prog" && return 0
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prog=`echo $1 | sed "$program_transform_name"`
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which $prog > /dev/null 2> /dev/null && return 0
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return 1
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}
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SYMBOL=
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INFILE=
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OUTFILE=
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FLAGS=
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parse_args ()
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{
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while test -n "$1"; do
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case "$1" in
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-*) FLAGS="${FLAGS} $1" ;;
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*) if test -z "$SYMBOL"; then
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SYMBOL="$1"
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elif test -z "$INFILE"; then
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INFILE="$1"
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elif test -z "$OUTFILE"; then
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OUTFILE="$1"
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else
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echo "Too many arguments!"
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usage
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fi ;;
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esac
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shift
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done
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if test -z "$OUTFILE"; then
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usage
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fi
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if test ! -r "$INFILE"; then
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echo "${INFILE}: File not found"
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usage
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fi
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}
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main ()
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{
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parse_args "$@"
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# Find a powerpc gcc. Support running from a combined tree build.
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if test -x "$mydir/../gcc/xgcc"; then
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CC="$mydir/../gcc/xgcc -B$mydir/../gcc/"
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else
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find_prog gcc
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if test $? -ne 0; then
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echo "Cannot find $prog"
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exit 1
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fi
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CC="$prog"
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fi
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# Find readelf. Any old readelf should do.
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find_prog readelf
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if test $? -ne 0; then
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if which readelf > /dev/null 2> /dev/null; then
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prog=readelf
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else
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echo "Cannot find $prog"
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exit 1
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fi
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fi
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READELF="$prog"
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# Sanity check the input file
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if ! ${READELF} -h ${INFILE} | grep 'Class:.*ELF32' >/dev/null 2>/dev/null \
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|| ! ${READELF} -h ${INFILE} | grep 'Type:.*EXEC' >/dev/null 2>/dev/null \
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|| ! ${READELF} -h ${INFILE} | egrep 'Machine:.*(SPU|17)' >/dev/null 2>/dev/null
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then
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echo "${INFILE}: Does not appear to be an SPU executable"
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exit 1
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fi
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toe=`${READELF} -S ${INFILE} | sed -n -e 's, *\[ *\([0-9]*\)\] *\.toe *[PROGN]*BITS *\([0-9a-f]*\).*,\1 \2,p'`
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toe_addr=`echo $toe | sed -n -e 's,.* ,,p'`
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toe=`echo $toe | sed -n -e 's, .*,,p'`
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# For loaded sections, pick off section number, address, and file offset
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sections=`${READELF} -S ${INFILE} | sed -n -e 's, *\[ *\([0-9]*\)\] *[^ ]* *PROGBITS *\([0-9a-f]*\) *\([0-9a-f]*\).*,\1 \2 \3,p'`
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sections=`echo ${sections}`
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# For relocation sections, pick off file offset and info (points to
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# section where relocs apply)
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relas=`${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'`
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relas=`echo ${relas}`
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# Build embedded SPU image.
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# 1. The whole SPU ELF file is written to .rodata.speelf
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# 2. Symbols starting with the string "_EAR_" in the SPU ELF image are
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# special. They allow an SPU program to access corresponding symbols
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# (ie. minus the _EAR_ prefix), in the PowerPC program. _EAR_ without
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# a suffix is used to refer to the addrress of the SPU image in
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# PowerPC address space. _EAR_* symbols must all be defined in .toe
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# at 16 byte intervals, or they must be defined in other non-bss
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# sections.
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# Find all _EAR_ symbols in .toe using readelf, sort by address, and
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# write the address of the corresponding PowerPC symbol in a table
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# built in .data.spetoe. For _EAE_ symbols not in .toe, create
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# .reloc commands to relocate their location directly.
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# 3. Look for R_SPU_PPU32 and R_SPU_PPU64 relocations in the SPU ELF image
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# and create .reloc commands for them.
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# 4. Write a struct spe_program_handle to .data.
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# 5. Write a table of _SPUEAR_ symbols.
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${CC} ${FLAGS} -x assembler-with-cpp -nostartfiles -nostdlib \
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-Wa,-mbig -Wl,-r -Wl,-x -o ${OUTFILE} - <<EOF
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.section .data.spetoe,"aw",@progbits
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.p2align 7
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__spetoe__:
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`${READELF} -s -W ${INFILE} | grep ' _EAR_' | sort -k 2 | awk \
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'BEGIN { \
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addr = strtonum ("0x" "'${toe_addr-0}'"); \
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split ("'"${sections}"'", s, " "); \
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for (i = 1; i in s; i += 3) { \
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sec_off[s[i]] = strtonum ("0x" s[i+2]) - strtonum ("0x" s[i+1]); \
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} \
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} \
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$7 == "'${toe}'" && strtonum ("0x" $2) != addr { \
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print "#error Symbol " $8 " not in 16 byte element toe array!"; \
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} \
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$7 == "'${toe}'" { \
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addr = addr + 16; \
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} \
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$7 == "'${toe}'" { \
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print "#ifdef _LP64"; \
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print " .quad " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)) ", 0"; \
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print "#else"; \
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print " .int 0, " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)) ", 0, 0"; \
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print "#endif"; \
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} \
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$7 != "'${toe}'" && $7 in sec_off { \
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print "#ifdef _LP64"; \
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print " .reloc __speelf__+" strtonum ("0x" $2) + sec_off[$7] ", R_PPC64_ADDR64, " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)); \
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print "#else"; \
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print " .reloc __speelf__+" strtonum ("0x" $2) + sec_off[$7] + 4 ", R_PPC_ADDR32, " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)); \
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print "#endif"; \
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if (!donedef) { print "#define HAS_RELOCS 1"; donedef = 1; }; \
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} \
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$7 != "'${toe}'" && ! $7 in sec_off { \
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print "#error Section not found for " $8; \
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} \
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'`
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`test -z "${relas}" || ${READELF} -r -W ${INFILE} | awk \
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'BEGIN { \
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split ("'"${sections}"'", s, " "); \
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for (i = 1; i in s; i += 3) { \
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sec_off[s[i]] = strtonum ("0x" s[i+2]) - strtonum ("0x" s[i+1]); \
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} \
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split ("'"${relas}"'", s, " "); \
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for (i = 1; i in s; i += 2) { \
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rela[s[i]] = strtonum (s[i+1]); \
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} \
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} \
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/^Relocation section/ { \
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sec = substr($6, 3); \
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} \
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$3 ~ /R_SPU_PPU/ { \
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print "#ifdef _LP64"; \
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print " .reloc __speelf__+" strtonum ("0x" $1) + sec_off[rela[sec]] ", R_PPC64_ADDR" substr($3, 10) ", " ($5 != "" ? $5 "+0x" $7 : "__speelf__ + 0x" $4); \
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print "#else"; \
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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); \
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print "#endif"; \
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if (!donedef) { print "#define HAS_RELOCS 1"; donedef = 1; }; \
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} \
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$3 ~ /unrecognized:/ { \
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print "#ifdef _LP64"; \
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print " .reloc __speelf__+" strtonum ("0x" $1) + sec_off[rela[sec]] ", R_PPC64_ADDR" ($4 == "f" ? "64" : "32") ", " ($6 != "" ? $6 "+0x" $8 : "__speelf__ + 0x" $5); \
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print "#else"; \
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print " .reloc __speelf__+" strtonum ("0x" $1) + sec_off[rela[sec]] + ($4 == "f" ? 4 : 0)", R_PPC_ADDR32, " ($6 != "" ? $6 "+0x" $8 : "__speelf__ + 0x" $5); \
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print "#endif"; \
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if (!donedef) { print "#define HAS_RELOCS 1"; donedef = 1; }; \
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} \
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'`
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#if defined (HAS_RELOCS) && (defined (__PIC__) || defined (__PIE__))
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.section .data.rel.ro.speelf,"a",@progbits
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#else
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.section .rodata.speelf,"a",@progbits
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#endif
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.p2align 7
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__speelf__:
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.incbin "${INFILE}"
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.section .data,"aw",@progbits
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.globl ${SYMBOL}
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.type ${SYMBOL}, @object
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# fill in a struct spe_program_handle
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#ifdef _LP64
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.p2align 3
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${SYMBOL}:
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.int 24
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.int 0
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.quad __speelf__
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.quad __spetoe__
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#else
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.p2align 2
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${SYMBOL}:
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.int 12
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.int __speelf__
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.int __spetoe__
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#endif
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.size ${SYMBOL}, . - ${SYMBOL}
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`${READELF} -s -W ${INFILE} | grep ' _SPUEAR_' | sort -k 2 | awk \
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'{ \
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print " .globl '${SYMBOL}'_" substr($8, 9); \
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print " .type '${SYMBOL}'_" substr($8, 9) ", @object"; \
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print " .size '${SYMBOL}'_" substr($8, 9) ", 4"; \
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print "'${SYMBOL}'_" substr($8, 9) ":"; \
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print " .int 0x" $2; \
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} \
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'`
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EOF
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}
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main "$@"
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