tools/testing/selftests/signal/current_stack_pointer.h

File Facts

System

Linux kernel

Corpus path

tools/testing/selftests/signal/current_stack_pointer.h

Extension

.h

Size

650 bytes

Lines

24

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.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#if __alpha__
register unsigned long sp asm("$30");
#elif __arm__ || __aarch64__ || __csky__ || __m68k__ || __mips__ || __riscv
register unsigned long sp asm("sp");
#elif __i386__
register unsigned long sp asm("esp");
#elif __loongarch64
register unsigned long sp asm("$sp");
#elif __powerpc__
register unsigned long sp asm("r1");
#elif __s390x__
register unsigned long sp asm("%15");
#elif __sh__
register unsigned long sp asm("r15");
#elif __x86_64__
register unsigned long sp asm("rsp");
#elif __XTENSA__
register unsigned long sp asm("a1");
#else
#error "implement current_stack_pointer equivalent"
#endif

Annotation

• 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.