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* [glibc] elf: Support lld-style link map for librtld.map
@ 2020-04-21 18:12 Adhemerval Zanella
0 siblings, 0 replies; only message in thread
From: Adhemerval Zanella @ 2020-04-21 18:12 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=eb06601bb4187d8f5a9f55c2d212747869f63fe1
commit eb06601bb4187d8f5a9f55c2d212747869f63fe1
Author: Fangrui Song <maskray@google.com>
Date: Tue Apr 21 13:28:42 2020 -0300
elf: Support lld-style link map for librtld.map
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)
Diff:
---
elf/Makefile | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/elf/Makefile b/elf/Makefile
index 9b1d58c7ad..6919e53c14 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -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 \
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2020-04-21 18:12 [glibc] elf: Support lld-style link map for librtld.map Adhemerval Zanella
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