arch/powerpc/include/uapi/asm/ucontext.h

Source file repositories/reference/linux-study-clean/arch/powerpc/include/uapi/asm/ucontext.h

File Facts

System
Linux kernel
Corpus path
arch/powerpc/include/uapi/asm/ucontext.h
Extension
.h
Size
975 bytes
Lines
42
Domain
Architecture Layer
Bucket
arch/powerpc
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

struct mcontext {
	elf_gregset_t	mc_gregs;
	elf_fpregset_t	mc_fregs;
	unsigned long	mc_pad[2];
	elf_vrregset_t	mc_vregs __attribute__((__aligned__(16)));
};
#endif

struct ucontext {
	unsigned long	uc_flags;
	struct ucontext __user *uc_link;
	stack_t		uc_stack;
#ifndef __powerpc64__
	int		uc_pad[7];
	struct mcontext	__user *uc_regs;/* points to uc_mcontext field */
#endif
	sigset_t	uc_sigmask;
	/* glibc has 1024-bit signal masks, ours are 64-bit */
#ifdef __powerpc64__
	sigset_t	__unused[15];	/* Allow for uc_sigmask growth */
	struct sigcontext uc_mcontext;	/* last for extensibility */
#else
	int		uc_maskext[30];
	int		uc_pad2[3];
	struct mcontext	uc_mcontext;
#endif
};

#endif /* _ASM_POWERPC_UCONTEXT_H */

Annotation

Implementation Notes