tools/objtool/include/objtool/cfi.h

File Facts

System

Linux kernel

Corpus path

tools/objtool/include/objtool/cfi.h

Extension

.h

Size

796 bytes

Lines

43

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

• arch/cfi_regs.h
• linux/list.h

Detected Declarations

• struct cfi_reg
• struct cfi_init_state
• struct cfi_state

Annotated Snippet

struct cfi_reg {
	int base;
	int offset;
};

struct cfi_init_state {
	struct cfi_reg regs[CFI_NUM_REGS];
	struct cfi_reg cfa;
};

struct cfi_state {
	struct hlist_node hash; /* must be first, cficmp() */
	struct cfi_reg regs[CFI_NUM_REGS];
	struct cfi_reg vals[CFI_NUM_REGS];
	struct cfi_reg cfa;
	int stack_size;
	int drap_reg, drap_offset;
	unsigned char type;
	bool bp_scratch;
	bool drap;
	bool signal;
	bool end;
	bool force_undefined;
};

#endif /* _OBJTOOL_CFI_H */

Annotation

• Immediate include surface: `arch/cfi_regs.h`, `linux/list.h`.
• Detected declarations: `struct cfi_reg`, `struct cfi_init_state`, `struct cfi_state`.
• 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.