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* embedspu.sh: Combine "_EAR_" and "_EAR_*" patterns. Tighten

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.toe section and .toe address checks.  Use .reloc for _EAR*
	symbols defined in non-BSS sections.  Build table for _SPUEAR_
	symbols.
This commit is contained in:
Alan Modra 2007-03-26 23:56:40 +00:00
parent d4d2b80b9f
commit 88948ad083
2 changed files with 51 additions and 18 deletions
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7
binutils/ChangeLog
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@ -1,3 +1,10 @@
2007-03-27 Alan Modra <amodra@bigpond.net.au>
* embedspu.sh: Combine "_EAR_" and "_EAR_*" patterns. Tighten
.toe section and .toe address checks. Use .reloc for _EAR*
symbols defined in non-BSS sections. Build table for _SPUEAR_
symbols.
2007-03-23 Kaz Kojima <kkojima@rr.iij4u.or.jp>
PR gas/3811

62
binutils/embedspu.sh
View File

@ -116,18 +116,27 @@ main ()
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 $toe | sed -n -e 's, .*,,p'`
sections=`${READELF} -S ${INFILE} | sed -n -e 's, *\[ *\([0-9]*\)\] *[^ ]* *PROGBITS *\([0-9a-f]*\) *\([0-9a-f]*\).*,\1 \2 \3,p'`
sections=`echo ${sections}`
# 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 one
# section at 16 byte intervals.
# Find all _EAR_ symbols using readelf, sort by address, and write
# the address of the corresponding PowerPC symbol in a table built
# in .data.spetoe.
# 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 _EAE_ symbols not in .toe, create
# .reloc commands to relocate their location directly.
# 3. Write a struct spe_program_handle to .data.
# 4. Write a table of _SPUEAR_ symbols.
${CC} ${FLAGS} -x assembler-with-cpp -nostartfiles -nostdlib \
-Wa,-mbig -Wl,-r -Wl,-x -o ${OUTFILE} - <<EOF
.section .rodata.speelf,"a",@progbits
@ -140,29 +149,36 @@ __speelf__:
__spetoe__:
`${READELF} -s -W ${INFILE} | grep ' _EAR_' | sort -k 2 | awk \
'BEGIN { \
last_addr = 0; \
last_sym = ""; \
addr = strtonum ("0x" '${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]); \
} \
} \
last_addr != 0 && strtonum("0x" $2) != last_addr + 16 { \
print "#error Symbols " last_sym " and " $8 " are not 16 bytes apart!"; \
$7 == "'${toe}'" && strtonum ("0x" $2) != addr { \
print "#error Symbol " $8 " not in 16 byte element toe array!"; \
} \
{ last_addr = strtonum("0x" $2); \
last_sym = $8; \
$7 == "'${toe}'" { \
addr = addr + 16; \
} \
$8 == "_EAR_" { \
$7 == "'${toe}'" { \
print "#ifdef _LP64"; \
print " .quad __speelf__, 0"; \
print " .quad " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)) ", 0"; \
print "#else"; \
print " .int 0, __speelf__, 0, 0"; \
print " .int 0, " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)) ", 0, 0"; \
print "#endif"; \
} \
$8 != "_EAR_" { \
$7 != "'${toe}'" && $7 in sec_off { \
print "#ifdef _LP64"; \
print " .quad " substr($8, 6) ", 0"; \
print " .reloc __speelf__+" strtonum ("0x" $2) + sec_off[$7] ", R_PPC64_ADDR64, " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)); \
print "#else"; \
print " .int 0, " substr($8, 6) ", 0, 0"; \
print " .reloc __speelf__+" strtonum ("0x" $2) + sec_off[$7] + 4 ", R_PPC_ADDR32, " ($8 == "_EAR_" ? "__speelf__" : substr($8, 6)); \
print "#endif"; \
}'`
} \
$7 != "'${toe}'" && ! $7 in sec_off { \
print "#error Section not found for " $8; \
} \
'`
.section .data,"aw",@progbits
.globl ${SYMBOL}
@ -183,6 +199,16 @@ ${SYMBOL}:
.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 " $2; \
} \
'`
EOF
}