Commit Graph

7 Commits

Author SHA1 Message Date
NaitikJoshiPro 6f856a7cda feat(relinker): executable TLS relocations (TPOFF64, DTPOFF64, DTPMOD64)
A PS5 eboot can keep initial-exec TLS as R_X86_64_TPOFF64 GOT relocations
(SuperTuxKart, STKT00001, has 13, all without a symbol), which the
relocation allowlist rejected. Relocations against the executable's own
TLS block (no symbol, or a defined STT_TLS symbol folded into the addend)
now go to the Linux ELF as symbolless dynamic relocations that the
dynamic loader resolves against where it placed the block; one against an
import stays named and is typed STT_TLS. The Windows and macOS images
resolve TPOFF64 and DTPOFF64 statically against the block
AlignUp(p_memsz, p_align) below the thread pointer, the offset
WindowsTlsBuilder and MacOsImage use, and reject DTPMOD64 and imported
TLS. TPOFF32 stays unsupported.

New test executable_tls_relocations covers the Linux, Windows and macOS
outputs and the rejected cases.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-13 21:24:37 +05:30
codingreapermaps 430e5c833e feat(relinker): add --trace-imports for Windows executables
With --trace-imports the entry stub resolves TraceImport_nid_no_patch
in libc.prx and passes each function import through it before writing
the slot: every PLT slot, and a GOT slot only when the original symbol
is a function, so data imports such as __stdoutp keep their address.
Without the option the output is unchanged.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-13 16:55:31 +02:00
Simone ad0d478a81 Merge remote-tracking branch 'origin/main' into fix/relinker-weak-imports
# Conflicts:
#	core/relinker/relinker/src/output/SysVDynamicSectionBuilder.cpp
#	core/relinker/relinker/src/pipeline/RelinkerPipeline.cpp
2026-10-12 23:40:54 +02:00
Simone cb1c18d552 fix(relinker): keep weak undefined imports weak
Weak undefined imports in the input ELF became STB_GLOBAL in the relinked
output, so a title that weak-imports a function no module exports stopped
at startup instead of binding the import to null.

Keep STB_WEAK on the relinked dynamic symbols. On Windows, write 0 plus
the addend to the slot of a weak import that no searched module exports.

Fixes #4497

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-12 15:48:50 +02:00
Ori Shamir 1205d03daa fix(relinker): resolve relocations against null symbol entries to 0
A relocation whose dynamic symbol entry is all zero, like the null symbol,
now takes the value 0 plus its addend, as the gABI defines for STN_UNDEF.
The Linux output imports such an entry as an unnamed weak symbol, which the
host loader resolves to 0. The Windows and macOS outputs write the value
into the slot instead of failing with "Empty import symbol name". Such
references are left out of the call registry. An unnamed symbol entry that
is not all zero still fails the relink.

OliSe Player (PPSA01153) has seven of these entries and calls through the
slots only when they are not 0 (#4437).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-12 15:24:56 +03:00
Nicolas Abosch bf0ee4019d fix(relinker): bind Windows imports to their declared modules 2026-10-05 22:43:25 -03:00
boykopovar 4b643c6655 refactor(core): seprated folders for relinker and libs 2026-09-11 14:53:01 +03:00
Renamed from core/elfpatcher/src/windows/WindowsRelocationBuilder.cpp (Browse further)