| commit | 2478b6f6d6c1da1085e958ece8b17255aa17be6e | [log] [tgz] |
|---|---|---|
| author | Cherry Mui <cherryyz@google.com> | Fri Oct 08 19:24:53 2021 -0400 |
| committer | Cherry Mui <cherryyz@google.com> | Mon Oct 11 15:48:29 2021 +0000 |
| tree | 56ff75bd47e84eb50251eb8e03e808f852d12245 | |
| parent | f2141a71c6619617d32c224bd2e272a07904b8e9 [diff] |
runtime: simplify multiple text section handling in findfunc In findfunc, we first us the relative PC to find the function's index in functab. When we split text sections, as the external linker may shift the sections, and the PC may not match the (virtual) PC we used to build the functab. So the index may be inaccurate, and we need to do a (forward or backward) linear search to find the actual entry. Instead of using the PC directly, we can first compute the (pre-external-link virtual) relative PC and use that to find the index in functab. This way, the index will be accurate and we will not need to do the special backward linear search. Change-Id: I8ab11c66b7a5a3d79aae00198b98780e10db27b0 Reviewed-on: https://go-review.googlesource.com/c/go/+/354873 Trust: Cherry Mui <cherryyz@google.com> Trust: Josh Bleecher Snyder <josharian@gmail.com> Run-TryBot: Cherry Mui <cherryyz@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
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