tools/objtool/include/objtool/special.h

File Facts

System

Linux kernel

Corpus path

tools/objtool/include/objtool/special.h

Extension

.h

Size

1008 bytes

Lines

44

Domain

Support Tooling And Documentation

Bucket

tools

Inferred role

Support Tooling And Documentation: implementation source

Status

source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• stdbool.h
• objtool/check.h
• objtool/elf.h

Detected Declarations

• struct special_alt

Annotated Snippet

struct special_alt {
	struct list_head list;

	bool group;
	bool jump_or_nop;
	u8 key_addend;

	struct section *orig_sec;
	unsigned long orig_off;

	struct section *new_sec;
	unsigned long new_off;

	unsigned int orig_len, new_len, feature; /* group only */
};

int special_get_alts(struct elf *elf, struct list_head *alts);

void arch_handle_alternative(struct special_alt *alt);

bool arch_support_alt_relocation(struct special_alt *special_alt,
				 struct instruction *insn,
				 struct reloc *reloc);
struct reloc *arch_find_switch_table(struct objtool_file *file,
				     struct instruction *insn,
				     unsigned long *table_size);
const char *arch_cpu_feature_name(int feature_number);

#endif /* _SPECIAL_H */

Annotation

• Immediate include surface: `stdbool.h`, `objtool/check.h`, `objtool/elf.h`.
• Detected declarations: `struct special_alt`.
• Atlas domain: Support Tooling And Documentation / tools.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.