boringssl

Mirror of BoringSSL (grpc依赖) https://boringssl.googlesource.com/boringssl

History

Adam Langley 56308910f3 delocate: use 64-bit GOT offsets in the large memory model. I tried to save space and use 32-bit GOT offsets since a GOT > 2GiB is crazy. However, Clang's linker emits 64-bit relocations even for .long, thus the four bytes following each offset get stomped. It mostly works because the relocations are applied in order, thus the following relocation gets stomped but is then processed and fixed. But there's four bytes of stomp at the end which hits the module integrity hash, which is fatal. This could be fixed by adding four bytes of padding after the list of offsets, but that's piling a hack on a hack. So this change just switches to 64-bit offsets. Change-Id: I227eec67c481d93a414fbed19aa99471f9df0f0e Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/42484 Commit-Queue: David Benjamin <davidben@google.com> Reviewed-by: David Benjamin <davidben@google.com>	5 years ago
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in.s	delocation: large memory model support.	5 years ago
out.s	delocate: use 64-bit GOT offsets in the large memory model.	5 years ago

Adam Langley 56308910f3 delocate: use 64-bit GOT offsets in the large memory model.

I tried to save space and use 32-bit GOT offsets since a GOT > 2GiB is
crazy. However, Clang's linker emits 64-bit relocations even for .long,
thus the four bytes following each offset get stomped. It mostly works
because the relocations are applied in order, thus the following
relocation gets stomped but is then processed and fixed. But there's
four bytes of stomp at the end which hits the module integrity hash,
which is fatal.

This could be fixed by adding four bytes of padding after the list of
offsets, but that's piling a hack on a hack. So this change just
switches to 64-bit offsets.

Change-Id: I227eec67c481d93a414fbed19aa99471f9df0f0e
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/42484
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>

5 years ago

in.s

delocation: large memory model support.

5 years ago

out.s

delocate: use 64-bit GOT offsets in the large memory model.

5 years ago