vasilito
cb424d7448
verify-patch-sanity.py validates every active recipe .patch has internally- consistent hunk line counts — catching the 'malformed patch at line N' failure at commit/CI/preflight time instead of hours into a cook. This cycle hit that class three times (qtwaylandscanner, sddm, xwayland), each only discovered when cookbook tried to apply the patch. Running it across the repo found 29 latent malformed patches (validated against GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22'). They were harmless only because they sit in vendored recipes (baked, not re- applied) — but would fail on any version-bump re-derivation. --fix recounts the hunk headers (body untouched) and repaired all 29. Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test (test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats (empty placeholders, bare-@@ git hunks).
129 lines
4.1 KiB
C++
129 lines
4.1 KiB
C++
//===- Relocations.h --------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLD_MACHO_RELOCATIONS_H
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#define LLD_MACHO_RELOCATIONS_H
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#include "llvm/ADT/BitmaskEnum.h"
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#include "llvm/ADT/PointerUnion.h"
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#include "llvm/BinaryFormat/MachO.h"
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#include "llvm/Support/Endian.h"
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#include <cstddef>
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#include <cstdint>
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namespace lld::macho {
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LLVM_ENABLE_BITMASK_ENUMS_IN_NAMESPACE();
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class Symbol;
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class InputSection;
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enum class RelocAttrBits {
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_0 = 0, // invalid
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PCREL = 1 << 0, // Value is PC-relative offset
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ABSOLUTE = 1 << 1, // Value is an absolute address or fixed offset
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BYTE4 = 1 << 2, // 4 byte datum
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BYTE8 = 1 << 3, // 8 byte datum
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EXTERN = 1 << 4, // Can have an external symbol
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LOCAL = 1 << 5, // Can have a local symbol
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ADDEND = 1 << 6, // *_ADDEND paired prefix reloc
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SUBTRAHEND = 1 << 7, // *_SUBTRACTOR paired prefix reloc
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BRANCH = 1 << 8, // Value is branch target
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GOT = 1 << 9, // References a symbol in the Global Offset Table
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TLV = 1 << 10, // References a thread-local symbol
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LOAD = 1 << 11, // Relaxable indirect load
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POINTER = 1 << 12, // Non-relaxable indirect load (pointer is taken)
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UNSIGNED = 1 << 13, // *_UNSIGNED relocs
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LLVM_MARK_AS_BITMASK_ENUM(/*LargestValue*/ (1 << 14) - 1),
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};
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// Note: SUBTRACTOR always pairs with UNSIGNED (a delta between two symbols).
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struct RelocAttrs {
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llvm::StringRef name;
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RelocAttrBits bits;
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bool hasAttr(RelocAttrBits b) const { return (bits & b) == b; }
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};
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struct Reloc {
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uint8_t type = llvm::MachO::GENERIC_RELOC_INVALID;
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bool pcrel = false;
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uint8_t length = 0;
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// The offset from the start of the subsection that this relocation belongs
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// to.
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uint32_t offset = 0;
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// Adding this offset to the address of the referent symbol or subsection
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// gives the destination that this relocation refers to.
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int64_t addend = 0;
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llvm::PointerUnion<Symbol *, InputSection *> referent = nullptr;
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Reloc() = default;
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Reloc(uint8_t type, bool pcrel, uint8_t length, uint32_t offset,
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int64_t addend, llvm::PointerUnion<Symbol *, InputSection *> referent)
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: type(type), pcrel(pcrel), length(length), offset(offset),
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addend(addend), referent(referent) {}
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InputSection *getReferentInputSection() const;
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// Must point to an offset within a CStringInputSection or a
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// ConcatInputSection.
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llvm::StringRef getReferentString() const;
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};
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bool validateSymbolRelocation(const Symbol *, const InputSection *,
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const Reloc &);
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/*
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* v: The value the relocation is attempting to encode
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* bits: The number of bits actually available to encode this relocation
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*/
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void reportRangeError(void *loc, const Reloc &, const llvm::Twine &v,
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uint8_t bits, int64_t min, uint64_t max);
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struct SymbolDiagnostic {
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const Symbol *symbol;
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llvm::StringRef reason;
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};
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void reportRangeError(void *loc, SymbolDiagnostic, const llvm::Twine &v,
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uint8_t bits, int64_t min, uint64_t max);
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template <typename Diagnostic>
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inline void checkInt(void *loc, Diagnostic d, int64_t v, int bits) {
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if (v != llvm::SignExtend64(v, bits))
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reportRangeError(loc, d, llvm::Twine(v), bits, llvm::minIntN(bits),
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llvm::maxIntN(bits));
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}
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template <typename Diagnostic>
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inline void checkUInt(void *loc, Diagnostic d, uint64_t v, int bits) {
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if ((v >> bits) != 0)
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reportRangeError(loc, d, llvm::Twine(v), bits, 0, llvm::maxUIntN(bits));
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}
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inline void writeAddress(uint8_t *loc, uint64_t addr, uint8_t length) {
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switch (length) {
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case 2:
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llvm::support::endian::write32le(loc, addr);
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break;
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case 3:
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llvm::support::endian::write64le(loc, addr);
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break;
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default:
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llvm_unreachable("invalid r_length");
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}
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}
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InputSection *offsetToInputSection(uint64_t *);
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extern const RelocAttrs invalidRelocAttrs;
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} // namespace lld::Macho
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#endif
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