With this change, you can now cross compile test cases and run
them on qemu-user. Here is an example to run our test suits in
an emulated ARM32 environment.
$ CC=arm-linux-gnueabihf-gcc \
CXX=arm-linux-gnueabihf-g++ \
GCC=arm-linux-gnueabihf-gcc \
GXX=arm-linux-gnueabihf-g++ \
OBJDUMP=arm-linux-gnueabihf-objdump \
MACHINE=arm \
QEMU='qemu-arm -L /usr/arm-linux-gnueabihf' \
make -j16 test
While running tests on UBSan instrumented mold binary 2 separated problems are reported:
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior elf/main.cc:592:15 in
elf/output-chunks.cc:1866:24: runtime error: member call on null pointer of type 'mold:🧝:VerdefSection<mold:🧝:X86_64> *'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior elf/output-chunks.cc:1866:24 in
elf/input-files.cc:1000:8: runtime error: load of value 190, which is not a valid value for type 'bool'
This change fixes both of them.
Signed-off-by: Dawid Jurczak <dawid_jurek@vp.pl>
ARM32 object files usually contain a .ARM.attributes section.
We need to parse and merge .ARM.attributes sections.
But for now, we just remove them from inputs.
Currently, we do not support relaxations of TLS GD/LD relocations
for ARM64. This is in practice not a problem because TLSDESC is used
on ARM64 by default.
However, there's one situation in which not supporting TLS GD/LD
relaxation becomes an issue; static linking. If an executable is
statically-linked, relaxation is mandatory because we can't generate
dynamic relocations for GD/LD relocations.
In this patch, we simply report an error if an object file compiled
with TLS GD/LD is used for creating a statically-linked executable.
This commit fixes all tests on ARM64.
use stoul for unsigned long
image-base i64 to u64 parse_unsigned_number
Signed-off-by: nick-rawlings <100548346+nick-rawlings@users.noreply.github.com>
Implement support for the R_AARCH64_LD_PREL_LO19 relocation type. Since
this actually behaves the same way as R_AARCH64_CONDBR19, reuse the
relevant code.
Signed-off-by: Alois Wohlschlager <alois1@gmx-topmail.de>
