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elf: Support lld-style link map for librtld.map

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GNU ld and gold's -Map include a line like:

  path/to/build/libc_pic.a(check_fds.os)

lld -Map does not have the archive member list, but we can still derive the
members from the following output

             VMA              LMA     Size Align Out     In      Symbol
...
           1a1c0            1a1c0       e2    16         path/to/build/libc_pic.a(check_fds.os):(.text)
This commit is contained in:
Fangrui Song 2020-04-21 13:28:42 -03:00 committed by Adhemerval Zanella
parent 566e10aa72
commit eb06601bb4
1 changed files with 2 additions and 1 deletions
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3
elf/Makefile
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@ -514,9 +514,10 @@ $(objpfx)librtld.map: $(objpfx)dl-allobjs.os $(common-objpfx)libc_pic.a
rm -f $@.o
mv -f $@T $@
# For lld, skip preceding addresses and values before matching the archive and the member.
$(objpfx)librtld.mk: $(objpfx)librtld.map Makefile
LC_ALL=C \
sed -n 's@^$(common-objpfx)\([^(]*\)(\([^)]*\.os\)) *.*$$@\1 \2@p' \
sed -n 's@^[0-9a-f ]*$(common-objpfx)\([^(]*\)(\([^)]*\.os\)) *.*$$@\1 \2@p' \
$< | \
while read lib file; do \
case $$lib in \