/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */#ifndef __MIPS_UAPI_ASM_UCONTEXT_H#define __MIPS_UAPI_ASM_UCONTEXT_H /** * struct extcontext - extended context header structure * @magic:	magic value identifying the type of extended context * @size:	the size in bytes of the enclosing structure * * Extended context structures provide context which does not fit within struct * sigcontext. They are placed sequentially in memory at the end of struct * ucontext and struct sigframe, with each extended context structure beginning * with a header defined by this struct. The type of context represented is * indicated by the magic field. Userland may check each extended context * structure against magic values that it recognises. The size field allows any * unrecognised context to be skipped, allowing for future expansion. The end * of the extended context data is indicated by the magic value * END_EXTCONTEXT_MAGIC. */struct extcontext {	unsigned int		magic;	unsigned int		size;}; /** * struct msa_extcontext - MSA extended context structure * @ext:	the extended context header, with magic == MSA_EXTCONTEXT_MAGIC * @wr:		the most significant 64 bits of each MSA vector register * @csr:	the value of the MSA control & status register * * If MSA context is live for a task at the time a signal is delivered to it, * this structure will hold the MSA context of the task as it was prior to the * signal delivery. */struct msa_extcontext {	struct extcontext	ext;#define MSA_EXTCONTEXT_MAGIC	0x784d5341	/* xMSA */ 	unsigned long long	wr[32];	unsigned int		csr;}; #define END_EXTCONTEXT_MAGIC	0x78454e44	/* xEND */ /** * struct ucontext - user context structure * @uc_flags: * @uc_link: * @uc_stack: * @uc_mcontext:	holds basic processor state * @uc_sigmask: * @uc_extcontext:	holds extended processor state */struct ucontext {	/* Historic fields matching asm-generic */	unsigned long		uc_flags;	struct ucontext		*uc_link;	stack_t			uc_stack;	struct sigcontext	uc_mcontext;	sigset_t		uc_sigmask; 	/* Extended context structures may follow ucontext */	unsigned long long	uc_extcontext[];}; #endif /* __MIPS_UAPI_ASM_UCONTEXT_H */