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| author | Shahab Vahedi <shahab@synopsys.com> | 2020-07-30 18:40:41 +0200 |
|---|---|---|
| committer | Claudiu Zissulescu <claziss@gmail.com> | 2020-07-31 12:15:17 +0300 |
| commit | 223d5266dec459e04d99d1140cfb7c28900e1507 (patch) | |
| tree | 1e0dfb3bbd4cb5630c1d71ff4de8099418e4d8bf | |
| parent | 15f2a3ede0b026887f861c8e9c23f82355289e46 (diff) | |
| download | gdb-223d5266dec459e04d99d1140cfb7c28900e1507.zip gdb-223d5266dec459e04d99d1140cfb7c28900e1507.tar.gz gdb-223d5266dec459e04d99d1140cfb7c28900e1507.tar.bz2 | |
ARC: Fix ld/pr24511 test
With this patch, ld/pr24511 test passes for ARC.
At first glance, the test was failing because the order of
"__init_array_start" and "__fini_array_start" weak symbols were
reversed:
$ nm -n dump.out
expected output | real output
00002104 D __init_array_start | 00002104 D __fini_array_start
0000210c D __fini_array_start | 00002104 D __init_array_start
The order of the symbols are different as a side effect of both
symbols being mapped to the _same_ address (0x2104). Looking
further into the mapping logs [1] revealed that the linker
script must consider all instances of ".init_array" (in other
words ".init_array.*") inside its relevant section. Same logic
holds for ".fini_array".
Therefore, adding "KEEP (*(SORT(.init_array.*)))" to the linker
script, along with the one for ".finit_array.*", resolved the
problem. While at it, I took the liberty of refactoring the
script a little bit and made those pieces of script macros.
[1] Linker's mapping for the relevant part of the test
---------------------------------------------------------------
.init_array 0x2104 0x0
0x2104 PROVIDE (__init_array_start = .)
*(.init_array)
[!provide] PROVIDE (__init_array_end = .)
.fini_array 0x2104 0x0
0x2104 PROVIDE (__fini_array_start = .)
*(.fini_array)
[!provide] PROVIDE (__fini_array_end = .)
.data 0x2104 0x0
*(.data .data.* .gnu.linkonce.d.*)
.data 0x2104 0x0 pr24511.o
.init_array.01000
0x2104 0x8
.init_array.01000
0x2104 0x8 pr24511.o
.fini_array.01000
0x210c 0x8
.fini_array.01000
0x210c 0x8 pr24511.o
---------------------------------------------------------------
ld:
* scripttempl/elfarc.sc (.init_array): Keep ".init_array.*".
(.fini_array): Keep ".fini_array.*".
Signed-off-by: Claudiu Zissulescu <claziss@gmail.com>
| -rw-r--r-- | ld/ChangeLog | 5 | ||||
| -rw-r--r-- | ld/scripttempl/elfarc.sc | 24 |
2 files changed, 21 insertions, 8 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog index 0e03aa1..13919b2 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,3 +1,8 @@ +2020-07-31 Shahab Vahedi <shahab@synopsys.com> + + * scripttempl/elfarc.sc (.init_array): Keep ".init_array.*". + (.fini_array): Keep ".fini_array.*". + 2020-07-30 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> * Makefile.am (AM_CPPFLAGS): Add LARGEFILE_CPPFLAGS. diff --git a/ld/scripttempl/elfarc.sc b/ld/scripttempl/elfarc.sc index 8851c77..ebf40b8 100644 --- a/ld/scripttempl/elfarc.sc +++ b/ld/scripttempl/elfarc.sc @@ -118,6 +118,20 @@ if test -z "${NO_SMALL_DATA}"; then REL_SBSS2=".rel.sbss2 ${RELOCATING-0} : { *(.rel.sbss2${RELOCATING+ .rel.sbss2.* .rel.gnu.linkonce.sb2.*}) } .rela.sbss2 ${RELOCATING-0} : { *(.rela.sbss2${RELOCATING+ .rela.sbss2.* .rela.gnu.linkonce.sb2.*}) }" fi +INIT_ARRAY=".init_array ${RELOCATING-0} : + { + ${RELOCATING+${CREATE_SHLIB-PROVIDE (__init_array_start = .);}} + KEEP (*(SORT(.init_array.*))) + KEEP (*(.init_array)) + ${RELOCATING+${CREATE_SHLIB-PROVIDE (__init_array_end = .);}} + }" +FINI_ARRAY=".fini_array ${RELOCATING-0} : + { + ${RELOCATING+${CREATE_SHLIB-PROVIDE (__fini_array_start = .);}} + KEEP (*(SORT(.fini_array.*))) + KEEP (*(.fini_array)) + ${RELOCATING+${CREATE_SHLIB-PROVIDE (__fini_array_end = .);}} + }" CTOR=".ctors ${CONSTRUCTING-0} : { ${CONSTRUCTING+${CTOR_START}} @@ -314,14 +328,8 @@ cat <<EOF ${RELOCATING+${CREATE_SHLIB-PROVIDE (__preinit_array_start = .);}} .preinit_array ${RELOCATING-0} : { *(.preinit_array) } ${RELOCATING+${CREATE_SHLIB-PROVIDE (__preinit_array_end = .);}} - - ${RELOCATING+${CREATE_SHLIB-PROVIDE (__init_array_start = .);}} - .init_array ${RELOCATING-0} : { *(.init_array) } - ${RELOCATING+${CREATE_SHLIB-PROVIDE (__init_array_end = .);}} - - ${RELOCATING+${CREATE_SHLIB-PROVIDE (__fini_array_start = .);}} - .fini_array ${RELOCATING-0} : { *(.fini_array) } - ${RELOCATING+${CREATE_SHLIB-PROVIDE (__fini_array_end = .);}} + ${RELOCATING+${INIT_ARRAY}} + ${RELOCATING+${FINI_ARRAY}} .data ${RELOCATING-0} : { |