Reorder more powerpc64 sections for -z relro

This moves .got too, which requires .sdata and .sbss to move with it,
because these sections share addressing via the toc pointer and with
small-model code must be within a 16-bit signed offset.  .plt, .iplt
and .branch_lt must also be moved since they are addressed via a
32-bit offset from the toc pointer, and we might have a very large
.data section.

This change means we may have some bss style sections before the data
segment, necessitating another PT_LOAD header.  Also, since _edata is
defined at the end of the data segment it's possible with an empty
.data to have _edata at the end of .plt which looks a little unusual
since .plt is a bss style section.  That should only happen rarely in
real world binaries, but does occur in the ld testsuite.

ld/
	* emulparams/elf64ppc.sh (BSS_PLT): Don't define.
	(OTHER_READWRITE_SECTIONS): Move .branch_lt to..
	(OTHER_RELRO_SECTIONS_2): ..here.
	(DATA_GOT, SEPARATE_GOTPLT, DATA_SDATA, DATA_PLT,
	PLT_BEFORE_GOT): Define.
	* scripttempl/elf.sc: Handle DATA_SDATA and DATA_GOT/DATA_PLT/
	PLT_BEFORE_GOT combination.
	(DATA_GOT, SDATA_GOT): Don't define if either is already defined.
ld/testsuite/
	* ld-powerpc/ambiguousv1.d,
	* ld-powerpc/ambiguousv1b.d,
	* ld-powerpc/ambiguousv2.d,
	* ld-powerpc/ambiguousv2b.d,
	* ld-powerpc/elfv2exe.d,
	* ld-powerpc/elfv2so.d,
	* ld-powerpc/tlsexe.r,
	* ld-powerpc/tlsexetoc.r,
	* ld-powerpc/tlsso.r,
	* ld-powerpc/tlstocso.r: Update.
This commit is contained in:
Alan Modra 2015-01-20 17:19:15 +10:30
parent 3e2b0f3116
commit 23283c1be0
14 changed files with 75 additions and 123 deletions

View File

@ -1,3 +1,14 @@
2015-01-20 Alan Modra <amodra@gmail.com>
* emulparams/elf64ppc.sh (BSS_PLT): Don't define.
(OTHER_READWRITE_SECTIONS): Move .branch_lt to..
(OTHER_RELRO_SECTIONS_2): ..here.
(DATA_GOT, SEPARATE_GOTPLT, DATA_SDATA, DATA_PLT,
PLT_BEFORE_GOT): Define.
* scripttempl/elf.sc: Handle DATA_SDATA and DATA_GOT/DATA_PLT/
PLT_BEFORE_GOT combination.
(DATA_GOT, SDATA_GOT): Don't define if either is already defined.
2015-01-20 Alan Modra <amodra@gmail.com>
* emulparams/elf64ppc.sh (OTHER_READWRITE_SECTIONS): Move .opd to..

View File

@ -15,7 +15,6 @@ unset SBSS_END_SYMBOLS
unset OTHER_END_SYMBOLS
unset OTHER_RELRO_SECTIONS
OTHER_TEXT_SECTIONS="*(.sfpr .glink)"
BSS_PLT=
OTHER_BSS_SYMBOLS="
.tocbss ${RELOCATING-0} :${RELOCATING+ ALIGN(8)} { *(.tocbss)}"
OTHER_PLT_RELOC_SECTIONS="
@ -36,7 +35,16 @@ OTHER_GOT_RELOC_SECTIONS="
.rela.toc ${RELOCATING-0} : { *(.rela.toc) }
.rela.branch_lt ${RELOCATING-0} : { *(.rela.branch_lt) }"
OTHER_READWRITE_SECTIONS="
.toc1 ${RELOCATING-0} :${RELOCATING+ ALIGN(8)} { *(.toc1) }
.branch_lt ${RELOCATING-0} :${RELOCATING+ ALIGN(8)} { *(.branch_lt) }"
.toc1 ${RELOCATING-0} :${RELOCATING+ ALIGN(8)} { *(.toc1) }"
OTHER_RELRO_SECTIONS_2="
.opd ${RELOCATING-0} :${RELOCATING+ ALIGN(8)} { KEEP (*(.opd)) }"
.opd ${RELOCATING-0} :${RELOCATING+ ALIGN(8)} { KEEP (*(.opd)) }
.branch_lt ${RELOCATING-0} :${RELOCATING+ ALIGN(8)} { *(.branch_lt) }"
# Put .got before .data
DATA_GOT=" "
# Always make .got read-only after relocation
SEPARATE_GOTPLT=0
# Also put .sdata before .data
DATA_SDATA=" "
# and .plt/.iplt before .data
DATA_PLT=
PLT_BEFORE_GOT=" "

View File

@ -203,12 +203,12 @@ if test -z "${NO_SMALL_DATA}"; then
else
NO_SMALL_DATA=" "
fi
if test -z "${DATA_GOT}"; then
if test -z "${SDATA_GOT}${DATA_GOT}"; then
if test -n "${NO_SMALL_DATA}"; then
DATA_GOT=" "
fi
fi
if test -z "${SDATA_GOT}"; then
if test -z "${SDATA_GOT}${DATA_GOT}"; then
if test -z "${NO_SMALL_DATA}"; then
SDATA_GOT=" "
fi
@ -574,11 +574,15 @@ cat <<EOF
${OTHER_RELRO_SECTIONS}
${TEXT_DYNAMIC-${DYNAMIC}}
${OTHER_RELRO_SECTIONS_2}
${DATA_GOT+${RELRO_NOW+${DATA_PLT+${PLT_BEFORE_GOT+${PLT}}}}}
${DATA_GOT+${RELRO_NOW+${GOT}}}
${DATA_GOT+${RELRO_NOW+${GOTPLT}}}
${DATA_GOT+${RELRO_NOW-${SEPARATE_GOTPLT+${GOT}}}}
${RELOCATING+${DATA_SEGMENT_RELRO_END}}
${INITIAL_READWRITE_SECTIONS}
${DATA_SDATA+${SDATA}}
${DATA_SDATA+${OTHER_SDATA_SECTIONS}}
${DATA_GOT+${RELRO_NOW-${DATA_PLT+${PLT_BEFORE_GOT+${PLT}}}}}
${DATA_GOT+${RELRO_NOW-${SEPARATE_GOTPLT-${GOT}}}}
${DATA_GOT+${RELRO_NOW-${GOTPLT}}}
@ -595,12 +599,12 @@ cat <<EOF
${OTHER_READWRITE_SECTIONS}
${SMALL_DATA_CTOR+${RELOCATING+${CTOR}}}
${SMALL_DATA_DTOR+${RELOCATING+${DTOR}}}
${DATA_PLT+${PLT_BEFORE_GOT+${PLT}}}
${SDATA_GOT+${DATA_PLT+${PLT_BEFORE_GOT+${PLT}}}}
${SDATA_GOT+${RELOCATING+${OTHER_GOT_SYMBOLS+. = .; ${OTHER_GOT_SYMBOLS}}}}
${SDATA_GOT+${GOT}}
${SDATA_GOT+${OTHER_GOT_SECTIONS}}
${SDATA}
${OTHER_SDATA_SECTIONS}
${DATA_SDATA-${SDATA}}
${DATA_SDATA-${OTHER_SDATA_SECTIONS}}
${RELOCATING+${DATA_END_SYMBOLS-${USER_LABEL_PREFIX}_edata = .; PROVIDE (${USER_LABEL_PREFIX}edata = .);}}
${RELOCATING+. = .;}
${RELOCATING+${USER_LABEL_PREFIX}__bss_start = .;}

View File

@ -1,3 +1,16 @@
2015-01-20 Alan Modra <amodra@gmail.com>
* ld-powerpc/ambiguousv1.d,
* ld-powerpc/ambiguousv1b.d,
* ld-powerpc/ambiguousv2.d,
* ld-powerpc/ambiguousv2b.d,
* ld-powerpc/elfv2exe.d,
* ld-powerpc/elfv2so.d,
* ld-powerpc/tlsexe.r,
* ld-powerpc/tlsexetoc.r,
* ld-powerpc/tlsso.r,
* ld-powerpc/tlstocso.r: Update.
2015-01-20 Alan Modra <amodra@gmail.com>
PR ld/17615

View File

@ -17,28 +17,8 @@ Symbol table '\.dynsym' contains 5 entries:
.*
0: .*
1: 0+00000000 0 FUNC GLOBAL DEFAULT UND my_func
2: 0+10010390 0 NOTYPE GLOBAL DEFAULT 11 __bss_start
3: 0+10010390 0 NOTYPE GLOBAL DEFAULT 11 _edata
4: 0+10010390 0 NOTYPE GLOBAL DEFAULT 11 _end
#...
Symbol table '\.symtab' contains 19 entries:
Num: Value Size Type Bind Vis Ndx Name
0: .*
1: 0+10000158 0 SECTION LOCAL DEFAULT 1
2: 0+10000170 0 SECTION LOCAL DEFAULT 2
3: 0+10000198 0 SECTION LOCAL DEFAULT 3
4: 0+10000210 0 SECTION LOCAL DEFAULT 4
5: 0+10000248 0 SECTION LOCAL DEFAULT 5
6: 0+10000260 0 SECTION LOCAL DEFAULT 6
7: 0+10000264 0 SECTION LOCAL DEFAULT 7
8: 0+10010268 0 SECTION LOCAL DEFAULT 8
9: 0+10010368 0 SECTION LOCAL DEFAULT 9
10: 0+10010370 0 SECTION LOCAL DEFAULT 10
11: 0+10010388 0 SECTION LOCAL DEFAULT 11
12: 0+10010268 0 OBJECT LOCAL DEFAULT 8 _DYNAMIC
13: 0+10010368 0 NOTYPE GLOBAL DEFAULT 9 func_tab
#...
14: 0+00000000 0 FUNC GLOBAL DEFAULT UND my_func
15: 0+10010370 0 FUNC GLOBAL DEFAULT 10 _start
16: 0+10010390 0 NOTYPE GLOBAL DEFAULT 11 __bss_start
17: 0+10010390 0 NOTYPE GLOBAL DEFAULT 11 _edata
18: 0+10010390 0 NOTYPE GLOBAL DEFAULT 11 _end
#pass

View File

@ -17,29 +17,8 @@ Symbol table '\.dynsym' contains 5 entries:
.*
0: .*
1: 0+10010390 4 FUNC GLOBAL DEFAULT 12 my_func
2: 0+10010390 0 NOTYPE GLOBAL DEFAULT 12 __bss_start
3: 0+10010390 0 NOTYPE GLOBAL DEFAULT 11 _edata
4: 0+10010398 0 NOTYPE GLOBAL DEFAULT 12 _end
#...
Symbol table '\.symtab' contains 20 entries:
.*
0: .*
1: 0+10000158 0 SECTION LOCAL DEFAULT 1
2: 0+10000170 0 SECTION LOCAL DEFAULT 2
3: 0+10000198 0 SECTION LOCAL DEFAULT 3
4: 0+10000210 0 SECTION LOCAL DEFAULT 4
5: 0+10000248 0 SECTION LOCAL DEFAULT 5
6: 0+10000260 0 SECTION LOCAL DEFAULT 6
7: 0+10000264 0 SECTION LOCAL DEFAULT 7
8: 0+1000026c 0 SECTION LOCAL DEFAULT 8
9: 0+10010270 0 SECTION LOCAL DEFAULT 9
10: 0+10010370 0 SECTION LOCAL DEFAULT 10
11: 0+10010388 0 SECTION LOCAL DEFAULT 11
12: 0+10010390 0 SECTION LOCAL DEFAULT 12
13: 0+10010270 0 OBJECT LOCAL DEFAULT 9 _DYNAMIC
14: 0+10000264 0 NOTYPE GLOBAL DEFAULT 7 func_tab
#...
15: 0+10010390 4 FUNC GLOBAL DEFAULT 12 my_func
16: 0+10010370 0 FUNC GLOBAL DEFAULT 10 _start
17: 0+10010390 0 NOTYPE GLOBAL DEFAULT 12 __bss_start
18: 0+10010390 0 NOTYPE GLOBAL DEFAULT 11 _edata
19: 0+10010398 0 NOTYPE GLOBAL DEFAULT 12 _end
#pass

View File

@ -22,30 +22,9 @@ Symbol table '\.dynsym' contains 5 entries:
.*
0: .*
1: 0+00000000 0 FUNC GLOBAL DEFAULT UND my_func
2: 0+10010438 0 NOTYPE GLOBAL DEFAULT 12 __bss_start
3: 0+10010438 0 NOTYPE GLOBAL DEFAULT 11 _edata
4: 0+10010450 0 NOTYPE GLOBAL DEFAULT 12 _end
#...
Symbol table '\.symtab' contains 21 entries:
.*
0: .*
1: 0+10000158 0 SECTION LOCAL DEFAULT 1
2: 0+10000170 0 SECTION LOCAL DEFAULT 2
3: 0+10000198 0 SECTION LOCAL DEFAULT 3
4: 0+10000210 0 SECTION LOCAL DEFAULT 4
5: 0+10000248 0 SECTION LOCAL DEFAULT 5
6: 0+10000260 0 SECTION LOCAL DEFAULT 6
7: 0+10000278 0 SECTION LOCAL DEFAULT 7
8: 0+100002c4 0 SECTION LOCAL DEFAULT 8
9: 0+100102c8 0 SECTION LOCAL DEFAULT 9
10: 0+10010428 0 SECTION LOCAL DEFAULT 10
11: 0+10010430 0 SECTION LOCAL DEFAULT 11
12: 0+10010438 0 SECTION LOCAL DEFAULT 12
13: 0+100102c8 0 OBJECT LOCAL DEFAULT 9 _DYNAMIC
14: 0+10000288 0 NOTYPE LOCAL DEFAULT 7 __glink_PLTresolve
15: 0+10010428 0 NOTYPE GLOBAL DEFAULT 10 func_tab
#...
16: 0+00000000 0 FUNC GLOBAL DEFAULT UND my_func
17: 0+10000278 0 NOTYPE GLOBAL DEFAULT 7 _start
18: 0+10010438 0 NOTYPE GLOBAL DEFAULT 12 __bss_start
19: 0+10010438 0 NOTYPE GLOBAL DEFAULT 11 _edata
20: 0+10010450 0 NOTYPE GLOBAL DEFAULT 12 _end
#pass

View File

@ -18,30 +18,8 @@ Symbol table '\.dynsym' contains 5 entries:
.*
0: .*
1: 0+100002b8 0 FUNC GLOBAL DEFAULT UND my_func
2: 0+10010408 0 NOTYPE GLOBAL DEFAULT 11 __bss_start
3: 0+10010408 0 NOTYPE GLOBAL DEFAULT 10 _edata
4: 0+10010420 0 NOTYPE GLOBAL DEFAULT 11 _end
#...
Symbol table '\.symtab' contains 21 entries:
.*
0: .*
1: 0+10000158 0 SECTION LOCAL DEFAULT 1
2: 0+10000170 0 SECTION LOCAL DEFAULT 2
3: 0+10000198 0 SECTION LOCAL DEFAULT 3
4: 0+10000210 0 SECTION LOCAL DEFAULT 4
5: 0+10000248 0 SECTION LOCAL DEFAULT 5
6: 0+10000260 0 SECTION LOCAL DEFAULT 6
7: 0+100002c8 0 SECTION LOCAL DEFAULT 7
8: 0+100002d0 0 SECTION LOCAL DEFAULT 8
9: 0+100102d0 0 SECTION LOCAL DEFAULT 9
10: 0+10010400 0 SECTION LOCAL DEFAULT 10
11: 0+10010408 0 SECTION LOCAL DEFAULT 11
12: 0+100102d0 0 OBJECT LOCAL DEFAULT 9 _DYNAMIC
13: 0+100002b8 0 NOTYPE LOCAL DEFAULT 6 00000011\.global_entry\.my_func
14: 0+10000270 0 NOTYPE LOCAL DEFAULT 6 __glink_PLTresolve
15: 0+100002c8 0 NOTYPE GLOBAL DEFAULT 7 func_tab
#...
16: 0+100002b8 0 FUNC GLOBAL DEFAULT UND my_func
17: 0+10000260 0 NOTYPE GLOBAL DEFAULT 6 _start
18: 0+10010408 0 NOTYPE GLOBAL DEFAULT 11 __bss_start
19: 0+10010408 0 NOTYPE GLOBAL DEFAULT 10 _edata
20: 0+10010420 0 NOTYPE GLOBAL DEFAULT 11 _end
#pass

View File

@ -21,7 +21,7 @@ Disassembly of section \.text:
0+100000e0 <_start>:
.*: (02 10 40 3c|3c 40 10 02) lis r2,4098
.*: (40 81 42 38|38 42 81 40) addi r2,r2,-32448
.*: (38 81 42 38|38 42 81 38) addi r2,r2,-32456
.*: (a6 02 08 7c|7c 08 02 a6) mflr r0
.*: (e1 ff 21 f8|f8 21 ff e1) stdu r1,-32\(r1\)
.*: (30 00 01 f8|f8 01 00 30) std r0,48\(r1\)

View File

@ -7,33 +7,33 @@
Disassembly of section \.text:
0+300 <.*\.plt_call\.f4>:
0+320 <.*\.plt_call\.f4>:
.*: (18 00 41 f8|f8 41 00 18) std r2,24\(r1\)
.*: (38 80 82 e9|e9 82 80 38) ld r12,-32712\(r2\)
.*: (a6 03 89 7d|7d 89 03 a6) mtctr r12
.*: (20 04 80 4e|4e 80 04 20) bctr
0+310 <.*\.plt_call\.f3>:
0+330 <.*\.plt_call\.f3>:
.*: (18 00 41 f8|f8 41 00 18) std r2,24\(r1\)
.*: (28 80 82 e9|e9 82 80 28) ld r12,-32728\(r2\)
.*: (a6 03 89 7d|7d 89 03 a6) mtctr r12
.*: (20 04 80 4e|4e 80 04 20) bctr
0+320 <.*\.plt_call\.f2>:
0+340 <.*\.plt_call\.f2>:
.*: (18 00 41 f8|f8 41 00 18) std r2,24\(r1\)
.*: (30 80 82 e9|e9 82 80 30) ld r12,-32720\(r2\)
.*: (a6 03 89 7d|7d 89 03 a6) mtctr r12
.*: (20 04 80 4e|4e 80 04 20) bctr
0+330 <.*\.plt_call\.f1>:
0+350 <.*\.plt_call\.f1>:
.*: (18 00 41 f8|f8 41 00 18) std r2,24\(r1\)
.*: (40 80 82 e9|e9 82 80 40) ld r12,-32704\(r2\)
.*: (a6 03 89 7d|7d 89 03 a6) mtctr r12
.*: (20 04 80 4e|4e 80 04 20) bctr
0+340 <f1>:
0+360 <f1>:
.*: (02 00 4c 3c|3c 4c 00 02) addis r2,r12,2
.*: (e0 81 42 38|38 42 81 e0) addi r2,r2,-32288
.*: (d8 81 42 38|38 42 81 d8) addi r2,r2,-32296
.*: (a6 02 08 7c|7c 08 02 a6) mflr r0
.*: (e1 ff 21 f8|f8 21 ff e1) stdu r1,-32\(r1\)
.*: (30 00 01 f8|f8 01 00 30) std r0,48\(r1\)
@ -50,10 +50,10 @@ Disassembly of section \.text:
.*: (20 00 21 38|38 21 00 20) addi r1,r1,32
.*: (a6 03 08 7c|7c 08 03 a6) mtlr r0
.*: (20 00 80 4e|4e 80 00 20) blr
.*: (a0 01 01 00|00 00 00 00) .*
.*: (00 00 00 00|00 01 01 a0) .*
.*: (98 01 01 00|00 00 00 00) .*
.*: (00 00 00 00|00 01 01 98) .*
0+390 <__glink_PLTresolve>:
0+3b0 <__glink_PLTresolve>:
.*: (a6 02 08 7c|7c 08 02 a6) mflr r0
.*: (05 00 9f 42|42 9f 00 05) bcl .*
.*: (a6 02 68 7d|7d 68 02 a6) mflr r11

View File

@ -69,7 +69,7 @@ Symbol table '\.dynsym' contains [0-9]+ entries:
.* TLS +GLOBAL +DEFAULT +9 ld2
.* NOTYPE +GLOBAL +DEFAULT +13 __bss_start
.* FUNC +GLOBAL +DEFAULT +UND __tls_get_addr_opt
.* NOTYPE +GLOBAL +DEFAULT +12 _edata
.* NOTYPE +GLOBAL +DEFAULT +13 _edata
.* NOTYPE +GLOBAL +DEFAULT +13 _end
Symbol table '\.symtab' contains [0-9]+ entries:
@ -111,7 +111,7 @@ Symbol table '\.symtab' contains [0-9]+ entries:
.* TLS +GLOBAL +DEFAULT +9 ld1
.* NOTYPE +GLOBAL +DEFAULT +13 __bss_start
.* FUNC +GLOBAL +DEFAULT +UND __tls_get_addr_opt
.* NOTYPE +GLOBAL +DEFAULT +12 _edata
.* NOTYPE +GLOBAL +DEFAULT +13 _edata
.* NOTYPE +GLOBAL +DEFAULT +13 _end
.* TLS +GLOBAL +DEFAULT +9 gd0
.* TLS +GLOBAL +DEFAULT +9 ie0

View File

@ -68,7 +68,7 @@ Symbol table '\.dynsym' contains [0-9]+ entries:
.* TLS +GLOBAL +DEFAULT +UND ld
.* NOTYPE +GLOBAL +DEFAULT +13 __bss_start
.* FUNC +GLOBAL +DEFAULT +UND __tls_get_addr_opt
.* NOTYPE +GLOBAL +DEFAULT +12 _edata
.* NOTYPE +GLOBAL +DEFAULT +13 _edata
.* NOTYPE +GLOBAL +DEFAULT +13 _end
Symbol table '\.symtab' contains [0-9]+ entries:
@ -111,7 +111,7 @@ Symbol table '\.symtab' contains [0-9]+ entries:
.* TLS +GLOBAL +DEFAULT +9 ld1
.* NOTYPE +GLOBAL +DEFAULT +13 __bss_start
.* FUNC +GLOBAL +DEFAULT +UND __tls_get_addr_opt
.* NOTYPE +GLOBAL +DEFAULT +12 _edata
.* NOTYPE +GLOBAL +DEFAULT +13 _edata
.* NOTYPE +GLOBAL +DEFAULT +13 _end
.* TLS +GLOBAL +DEFAULT +9 gd0
.* TLS +GLOBAL +DEFAULT +9 ie0

View File

@ -84,7 +84,7 @@ Symbol table '\.dynsym' contains [0-9]+ entries:
.* TLS +GLOBAL +DEFAULT +8 ld2
.* TLS +GLOBAL +DEFAULT +8 ld1
.* NOTYPE +GLOBAL +DEFAULT +12 __bss_start
.* NOTYPE +GLOBAL +DEFAULT +11 _edata
.* NOTYPE +GLOBAL +DEFAULT +12 _edata
.* NOTYPE +GLOBAL +DEFAULT +12 _end
.* TLS +GLOBAL +DEFAULT +8 gd0
.* TLS +GLOBAL +DEFAULT +8 ie0
@ -127,7 +127,7 @@ Symbol table '\.symtab' contains [0-9]+ entries:
.* TLS +GLOBAL +DEFAULT +8 ld2
.* TLS +GLOBAL +DEFAULT +8 ld1
.* NOTYPE +GLOBAL +DEFAULT +12 __bss_start
.* NOTYPE +GLOBAL +DEFAULT +11 _edata
.* NOTYPE +GLOBAL +DEFAULT +12 _edata
.* NOTYPE +GLOBAL +DEFAULT +12 _end
.* TLS +GLOBAL +DEFAULT +8 gd0
.* TLS +GLOBAL +DEFAULT +8 ie0

View File

@ -79,7 +79,7 @@ Symbol table '\.dynsym' contains [0-9]+ entries:
.* TLS +GLOBAL +DEFAULT +8 ld2
.* TLS +GLOBAL +DEFAULT +8 ld1
.* NOTYPE +GLOBAL +DEFAULT +12 __bss_start
.* NOTYPE +GLOBAL +DEFAULT +11 _edata
.* NOTYPE +GLOBAL +DEFAULT +12 _edata
.* NOTYPE +GLOBAL +DEFAULT +12 _end
.* TLS +GLOBAL +DEFAULT +8 gd0
.* TLS +GLOBAL +DEFAULT +8 ie0
@ -123,7 +123,7 @@ Symbol table '\.symtab' contains [0-9]+ entries:
.* TLS +GLOBAL +DEFAULT +8 ld2
.* TLS +GLOBAL +DEFAULT +8 ld1
.* NOTYPE +GLOBAL +DEFAULT +12 __bss_start
.* NOTYPE +GLOBAL +DEFAULT +11 _edata
.* NOTYPE +GLOBAL +DEFAULT +12 _edata
.* NOTYPE +GLOBAL +DEFAULT +12 _end
.* TLS +GLOBAL +DEFAULT +8 gd0
.* TLS +GLOBAL +DEFAULT +8 ie0