/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
 * Author: Hanlu Li <lihanlu@loongson.cn>
 *         Huacai Chen <chenhuacai@loongson.cn>
 *
 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
 */
#ifndef _UAPI_ASM_SIGCONTEXT_H
#define _UAPI_ASM_SIGCONTEXT_H

#include <linux/types.h>

/* FP context was used */
#define SC_USED_FP              (1 << 0)
/* Address error was due to memory load */
#define SC_ADDRERR_RD           (1 << 30)
/* Address error was due to memory store */
#define SC_ADDRERR_WR           (1 << 31)

struct sigcontext {
        __u64   sc_pc;
        __u64   sc_regs[32];
        __u32   sc_flags;
        __u64   sc_extcontext[0] __attribute__((__aligned__(16)));
};

#define CONTEXT_INFO_ALIGN      16
struct sctx_info {
        __u32   magic;
        __u32   size;
        __u64   padding;        /* padding to 16 bytes */
};

/* FPU context */
#define FPU_CTX_MAGIC           0x46505501
#define FPU_CTX_ALIGN           8
struct fpu_context {
        __u64   regs[32];
        __u64   fcc;
        __u32   fcsr;
};

/* LSX context */
#define LSX_CTX_MAGIC           0x53580001
#define LSX_CTX_ALIGN           16
struct lsx_context {
        __u64   regs[2*32];
        __u64   fcc;
        __u32   fcsr;
};

/* LASX context */
#define LASX_CTX_MAGIC          0x41535801
#define LASX_CTX_ALIGN          32
struct lasx_context {
        __u64   regs[4*32];
        __u64   fcc;
        __u32   fcsr;
};

/* LBT context */
#define LBT_CTX_MAGIC           0x42540001
#define LBT_CTX_ALIGN           8
struct lbt_context {
        __u64   regs[4];
        __u32   eflags;
        __u32   ftop;
};


#endif /* _UAPI_ASM_SIGCONTEXT_H */