/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __ASM_COMPAT_H
#define __ASM_COMPAT_H

#define compat_mode_t	compat_mode_t
typedef u16		compat_mode_t;

/*
 * Architecture specific compatibility types
 */
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/sched/task_stack.h>
#include <asm-generic/compat.h>

#define COMPAT_USER_HZ		100
#define COMPAT_UTS_MACHINE	"riscv\0\0"

#define _COMPAT_NSIG		_NSIG
#define _COMPAT_NSIG_BPW	32

typedef compat_uint_t	__compat_uid_t;
typedef compat_uint_t	__compat_gid_t;
typedef compat_uint_t	__compat_uid32_t;
typedef compat_uint_t	__compat_gid32_t;
typedef compat_uint_t	compat_dev_t;
typedef compat_int_t	compat_ipc_pid_t;

typedef u32             compat_sigset_word;
typedef u32		compat_caddr_t;
struct compat_stat {
	compat_ulong_t	st_dev;
	compat_ulong_t	st_ino;
	compat_uint_t	st_mode;
	compat_uint_t	st_nlink;
	compat_uint_t	st_uid;
	compat_uint_t	st_gid;
	compat_ulong_t	st_rdev;
	compat_ulong_t	__pad1;
	compat_long_t	st_size;
	compat_int_t	st_blksize;
	compat_int_t	__pad2;
	compat_long_t	st_blocks;
	compat_long_t	st_atime;
	compat_ulong_t	st_atime_nsec;
	compat_long_t	st_mtime;
	compat_ulong_t	st_mtime_nsec;
	compat_long_t	st_ctime;
	compat_ulong_t	st_ctime_nsec;
	compat_uint_t	__unused4;
	compat_uint_t	__unused5;
};

struct compat_flock {
	compat_short_t	l_type;
	compat_short_t	l_whence;
	compat_off_t	l_start;
	compat_off_t	l_len;
	compat_pid_t	l_pid;
	/* No __ARCH_FLOCK_PAD in riscv */
};

#define F_GETLK64	12
#define F_SETLK64	13
#define F_SETLKW64	14

struct compat_flock64 {
	compat_short_t	l_type;
	compat_short_t	l_whence;
	compat_loff_t	l_start;
	compat_loff_t	l_len;
	compat_pid_t	l_pid;
	/* No __ARCH_FLOCK64_PAD in riscv */
};

struct compat_statfs {
	compat_uint_t	f_type;
	compat_uint_t	f_bsize;
	compat_uint_t	f_blocks;
	compat_uint_t	f_bfree;
	compat_uint_t	f_bavail;
	compat_uint_t	f_files;
	compat_uint_t	f_ffree;
	__kernel_fsid_t	f_fsid;
	compat_uint_t	f_namelen;
	compat_uint_t	f_frsize;
	compat_uint_t	f_flags;
	compat_uint_t	f_spare[4];
};

#define COMPAT_RLIM_INFINITY	0x7fffffff
#define COMPAT_OFF_T_MAX	COMPAT_RLIM_INFINITY

struct compat_ipc64_perm {
	compat_key_t key;
	__compat_uid32_t uid;
	__compat_gid32_t gid;
	__compat_uid32_t cuid;
	__compat_gid32_t cgid;
	compat_mode_t	mode;
	unsigned char	__pad1[4 - sizeof(compat_mode_t)];
	compat_ushort_t	seq;
	compat_ushort_t	__pad2;
	compat_ulong_t	unused1;
	compat_ulong_t	unused2;
};

struct compat_semid64_ds {
	struct compat_ipc64_perm sem_perm;
	compat_ulong_t sem_otime;
	compat_ulong_t sem_otime_high;
	compat_ulong_t sem_ctime;
	compat_ulong_t sem_ctime_high;
	compat_ulong_t sem_nsems;
	compat_ulong_t __unused3;
	compat_ulong_t __unused4;
};

struct compat_msqid64_ds {
	struct compat_ipc64_perm msg_perm;
	compat_ulong_t msg_stime;
	compat_ulong_t msg_stime_high;
	compat_ulong_t msg_rtime;
	compat_ulong_t msg_rtime_high;
	compat_ulong_t msg_ctime;
	compat_ulong_t msg_ctime_high;
	compat_ulong_t msg_cbytes;
	compat_ulong_t msg_qnum;
	compat_ulong_t msg_qbytes;
	compat_pid_t   msg_lspid;
	compat_pid_t   msg_lrpid;
	compat_ulong_t __unused4;
	compat_ulong_t __unused5;
};

struct compat_shmid64_ds {
	struct compat_ipc64_perm shm_perm;
	compat_size_t  shm_segsz;
	compat_ulong_t shm_atime;
	compat_ulong_t shm_atime_high;
	compat_ulong_t shm_dtime;
	compat_ulong_t shm_dtime_high;
	compat_ulong_t shm_ctime;
	compat_ulong_t shm_ctime_high;
	compat_pid_t   shm_cpid;
	compat_pid_t   shm_lpid;
	compat_ulong_t shm_nattch;
	compat_ulong_t __unused4;
	compat_ulong_t __unused5;
};

static inline int is_compat_task(void)
{
	return test_thread_flag(TIF_32BIT);
}

struct compat_user_regs_struct {
	compat_ulong_t pc;
	compat_ulong_t ra;
	compat_ulong_t sp;
	compat_ulong_t gp;
	compat_ulong_t tp;
	compat_ulong_t t0;
	compat_ulong_t t1;
	compat_ulong_t t2;
	compat_ulong_t s0;
	compat_ulong_t s1;
	compat_ulong_t a0;
	compat_ulong_t a1;
	compat_ulong_t a2;
	compat_ulong_t a3;
	compat_ulong_t a4;
	compat_ulong_t a5;
	compat_ulong_t a6;
	compat_ulong_t a7;
	compat_ulong_t s2;
	compat_ulong_t s3;
	compat_ulong_t s4;
	compat_ulong_t s5;
	compat_ulong_t s6;
	compat_ulong_t s7;
	compat_ulong_t s8;
	compat_ulong_t s9;
	compat_ulong_t s10;
	compat_ulong_t s11;
	compat_ulong_t t3;
	compat_ulong_t t4;
	compat_ulong_t t5;
	compat_ulong_t t6;
};

static inline void regs_to_cregs(struct compat_user_regs_struct *cregs,
				 struct pt_regs *regs)
{
	cregs->pc = (compat_ulong_t) regs->epc;
	cregs->ra = (compat_ulong_t) regs->ra;
	cregs->sp = (compat_ulong_t) regs->sp;
	cregs->gp = (compat_ulong_t) regs->gp;
	cregs->tp = (compat_ulong_t) regs->tp;
	cregs->t0 = (compat_ulong_t) regs->t0;
	cregs->t1 = (compat_ulong_t) regs->t1;
	cregs->t2 = (compat_ulong_t) regs->t2;
	cregs->s0 = (compat_ulong_t) regs->s0;
	cregs->s1 = (compat_ulong_t) regs->s1;
	cregs->a0 = (compat_ulong_t) regs->a0;
	cregs->a1 = (compat_ulong_t) regs->a1;
	cregs->a2 = (compat_ulong_t) regs->a2;
	cregs->a3 = (compat_ulong_t) regs->a3;
	cregs->a4 = (compat_ulong_t) regs->a4;
	cregs->a5 = (compat_ulong_t) regs->a5;
	cregs->a6 = (compat_ulong_t) regs->a6;
	cregs->a7 = (compat_ulong_t) regs->a7;
	cregs->s2 = (compat_ulong_t) regs->s2;
	cregs->s3 = (compat_ulong_t) regs->s3;
	cregs->s4 = (compat_ulong_t) regs->s4;
	cregs->s5 = (compat_ulong_t) regs->s5;
	cregs->s6 = (compat_ulong_t) regs->s6;
	cregs->s7 = (compat_ulong_t) regs->s7;
	cregs->s8 = (compat_ulong_t) regs->s8;
	cregs->s9 = (compat_ulong_t) regs->s9;
	cregs->s10 = (compat_ulong_t) regs->s10;
	cregs->s11 = (compat_ulong_t) regs->s11;
	cregs->t3 = (compat_ulong_t) regs->t3;
	cregs->t4 = (compat_ulong_t) regs->t4;
	cregs->t5 = (compat_ulong_t) regs->t5;
	cregs->t6 = (compat_ulong_t) regs->t6;
};

static inline void cregs_to_regs(struct compat_user_regs_struct *cregs,
				 struct pt_regs *regs)
{
	regs->epc = (unsigned long) cregs->pc;
	regs->ra = (unsigned long) cregs->ra;
	regs->sp = (unsigned long) cregs->sp;
	regs->gp = (unsigned long) cregs->gp;
	regs->tp = (unsigned long) cregs->tp;
	regs->t0 = (unsigned long) cregs->t0;
	regs->t1 = (unsigned long) cregs->t1;
	regs->t2 = (unsigned long) cregs->t2;
	regs->s0 = (unsigned long) cregs->s0;
	regs->s1 = (unsigned long) cregs->s1;
	regs->a0 = (unsigned long) cregs->a0;
	regs->a1 = (unsigned long) cregs->a1;
	regs->a2 = (unsigned long) cregs->a2;
	regs->a3 = (unsigned long) cregs->a3;
	regs->a4 = (unsigned long) cregs->a4;
	regs->a5 = (unsigned long) cregs->a5;
	regs->a6 = (unsigned long) cregs->a6;
	regs->a7 = (unsigned long) cregs->a7;
	regs->s2 = (unsigned long) cregs->s2;
	regs->s3 = (unsigned long) cregs->s3;
	regs->s4 = (unsigned long) cregs->s4;
	regs->s5 = (unsigned long) cregs->s5;
	regs->s6 = (unsigned long) cregs->s6;
	regs->s7 = (unsigned long) cregs->s7;
	regs->s8 = (unsigned long) cregs->s8;
	regs->s9 = (unsigned long) cregs->s9;
	regs->s10 = (unsigned long) cregs->s10;
	regs->s11 = (unsigned long) cregs->s11;
	regs->t3 = (unsigned long) cregs->t3;
	regs->t4 = (unsigned long) cregs->t4;
	regs->t5 = (unsigned long) cregs->t5;
	regs->t6 = (unsigned long) cregs->t6;
};

#endif /* __ASM_COMPAT_H */