forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
66 lines
2.1 KiB
66 lines
2.1 KiB
/* 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[0]; |
|
}; |
|
|
|
#endif /* __MIPS_UAPI_ASM_UCONTEXT_H */
|
|
|