tree ff8b3288448c9bc85b4367b79e82ef22d28d33a5
parent 4fc36fcf4aae1f24e328667cd3e95ca8affe50fc
author Yuta Saito <kateinoigakukun@gmail.com> 1615231413 -0800
committer Copybara-Service <copybara-worker@google.com> 1616052819 -0700

[WebAssembly] Add new relocation for location relative data

This `R_WASM_MEMORY_ADDR_SELFREL_I32` relocation represents an offset
between its relocating address and the symbol address. It's very similar
to `R_X86_64_PC32` but restricted to be used for only data segments.

```
S + A - P
```

A: Represents the addend used to compute the value of the relocatable
field.
P: Represents the place of the storage unit being relocated.
S: Represents the value of the symbol whose index resides in the
relocation entry.

Proposal: https://github.com/WebAssembly/tool-conventions/issues/162

Differential Revision: https://reviews.llvm.org/D96659

GitOrigin-RevId: aa0c571a5fa9130ccd932f9b6970440a1bae177f