fix: valgrind doesn't filter .plt.sec calls

[not-matthias]

No description provided.

[Copilot]

Pull Request Overview

This PR fixes Valgrind's handling of the .plt.sec (hardened PLT) section, which was previously not being filtered when the --skip-plt option was enabled. The fix adds support for detecting and tracking .plt.sec sections across different architectures and ensures they are treated similarly to regular .plt sections.

Key changes:

• Added new API functions and enum value for .plt.sec section tracking
• Implemented .plt.sec section detection in ELF reader for multiple architectures (x86, ppc32, ppc64)
• Updated callgrind to skip .plt.sec sections when --skip-plt is enabled

Reviewed Changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
include/pub_tool_debuginfo.h	Added API functions for .plt.sec section access and new Vg_SectPLTSEC enum value
coregrind/m_debuginfo/priv_storage.h	Added fields to track .plt.sec section presence, address, and size
coregrind/m_debuginfo/readelf.c	Implemented .plt.sec section detection for x86, ppc32, and ppc64 architectures
coregrind/m_debuginfo/debuginfo.c	Implemented getter functions, section kind mapping, and address range checking for .plt.sec
callgrind/fn.c	Updated PLT skip logic to include Vg_SectPLTSEC sections
callgrind/tests/plt_sec_test.c	Added test program that exercises library calls through .plt.sec
callgrind/tests/plt-sec-skip.vgtest	Added test configuration for verifying .plt.sec filtering
callgrind/tests/plt-sec-skip.stdout.exp	Added expected stdout output for the test
callgrind/tests/plt-sec-skip.stderr.exp	Added expected stderr output for the test
callgrind/tests/plt-sec-skip.post.exp	Added expected post-processing output showing filtered function names
callgrind/tests/filter_plt_sec	Added shell script to filter and verify callgrind output
callgrind/tests/Makefile.am	Updated build configuration to include new test files and compilation flags

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[Copilot]

Pull Request Overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated no new comments.

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[art049]

looks good