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[3.13] gh-136541: Fix several problems of perf trampolines in x86_64 and aarch64 (GH-136500)#136545

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Merged

pablogsal merged 1 commit intopython:3.13frompablogsal:backport-236f733-3.13

Jul 11, 2025

Merged

[3.13] gh-136541: Fix several problems of perf trampolines in x86_64 and aarch64 (GH-136500)#136545

pablogsal merged 1 commit intopython:3.13frompablogsal:backport-236f733-3.13

Jul 11, 2025

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pablogsal commentedJul 11, 2025•
edited by bedevere-appbot
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This commit fixes the following problems:

The x86_64 trampolines are not preserving frame pointers
The hardcoded offsets to the code segment from the FDE only worked properly for x64_64
The CIE data was not following conventions of aarch64
The eh_frame for aarch64 was not fully correct (cherry picked from commit236f733)

Issue:perf trampolines are not reliable in aarch64 #136541

[3.13]pythongh-136541: Fix several problems of perf trampolines in x…

4e3e5b3

…86_64 and aarch64 (pythonGH-136500)This commit fixes the following problems:* The x86_64 trampolines are not preserving frame pointers* The hardcoded offsets to the code segment from the FDE only worked properly for x64_64* The CIE data was not following conventions of aarch64* The eh_frame for aarch64 was not fully correct(cherry picked from commit236f733)Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>