https://sourceware.org/bugzilla/show_bug.cgi?id=30004
Bug ID: 30004
Summary: LD --exclude-all-symbols generates export table
Product: binutils
Version: 2.39
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: pali at kernel dot org
Target Milestone: ---
LD --exclude-all-symbols has issues for Native PE executables. It causes
generation of empty export table and puts name of the output executable/driver
(-o) as name of the export library. PE executables which are in shared address
space (e.g. NT driver executables) should really do not be treated as libraries
with library name (unless explicitly asked for such thing).
Test case on Debian Sid:
$ x86_64-w64-mingw32-ld -v
GNU ld (GNU Binutils) 2.39.90.20230110
$
$ x86_64-w64-mingw32-gcc -v
Using built-in specs.
COLLECT_GCC=x86_64-w64-mingw32-gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-w64-mingw32/12-win32/lto-wrapper
Target: x86_64-w64-mingw32
Configured with: ../../src/configure --build=x86_64-linux-gnu --prefix=/usr
--includedir='/usr/include' --mandir='/usr/share/man'
--infodir='/usr/share/info' --sysconfdir=/etc --localstatedir=/var
--disable-option-checking --disable-silent-rules
--libdir='/usr/lib/x86_64-linux-gnu' --libexecdir='/usr/lib/x86_64-linux-gnu'
--disable-maintainer-mode --disable-dependency-tracking --prefix=/usr
--enable-shared --enable-static --disable-multilib --with-system-zlib
--libexecdir=/usr/lib --without-included-gettext --libdir=/usr/lib
--enable-libstdcxx-time=yes --with-tune=generic --with-headers
--enable-version-specific-runtime-libs --enable-fully-dynamic-string
--enable-libgomp --enable-languages=c,c++,fortran,objc,obj-c++,ada --enable-lto
--enable-threads=win32 --program-suffix=-win32
--program-prefix=x86_64-w64-mingw32- --target=x86_64-w64-mingw32
--with-as=/usr/bin/x86_64-w64-mingw32-as
--with-ld=/usr/bin/x86_64-w64-mingw32-ld --enable-libatomic
--enable-libstdcxx-filesystem-ts=yes --enable-dependency-tracking SED=/bin/sed
Thread model: win32
Supported LTO compression algorithms: zlib
gcc version 12-win32 (GCC)
$
$ cat test-exclude-all-symbols.c
int empty(void) { return 0; }
$
$ x86_64-w64-mingw32-gcc test-exclude-all-symbols.c -pie -nostdlib -e empty
-Wl,--subsystem,native -Wl,--exclude-all-symbols -o
test-exclude-all-symbols.sys
$
$ x86_64-w64-mingw32-objdump -p test-exclude-all-symbols.sys | grep -A 20
'There is an export table'
There is an export table in .edata at 0x140005000
The Export Tables (interpreted .edata section contents)
Export Flags 0
Time/Date stamp 63c4107f
Major/Minor 0/0
Name 0000000000005028 test-exclude-all-symbols.sys
Ordinal Base 1
Number in:
Export Address Table 00000000
[Name Pointer/Ordinal] Table 00000000
Table Addresses
Export Address Table 0000000000005028
Name Pointer Table 0000000000005028
Ordinal Table 0000000000005028
Export Address Table -- Ordinal Base 1
[Ordinal/Name Pointer] Table
$
--
You are receiving this mail because:
You are on the CC list for the bug.
