1/*
  2 * Copyright 2010 Tilera Corporation. All Rights Reserved.
  3 *
  4 *   This program is free software; you can redistribute it and/or
  5 *   modify it under the terms of the GNU General Public License
  6 *   as published by the Free Software Foundation, version 2.
  7 *
  8 *   This program is distributed in the hope that it will be useful, but
  9 *   WITHOUT ANY WARRANTY; without even the implied warranty of
 10 *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
 11 *   NON INFRINGEMENT.  See the GNU General Public License for
 12 *   more details.
 13 */
 14
 15#ifndef _ASM_TILE_COMPAT_H
 16#define _ASM_TILE_COMPAT_H
 17
 18/*
 19 * Architecture specific compatibility types
 20 */
 21#include <linux/types.h>
 22#include <linux/sched.h>
 23
 24#define COMPAT_USER_HZ	100
 25
 26/* "long" and pointer-based types are different. */
 27typedef s32		compat_long_t;
 28typedef u32		compat_ulong_t;
 29typedef u32		compat_size_t;
 30typedef s32		compat_ssize_t;
 31typedef s32		compat_off_t;
 32typedef s32		compat_time_t;
 33typedef s32		compat_clock_t;
 34typedef u32		compat_ino_t;
 35typedef u32		compat_caddr_t;
 36typedef	u32		compat_uptr_t;
 37
 38/* Many types are "int" or otherwise the same. */
 39typedef __kernel_pid_t compat_pid_t;
 40typedef __kernel_uid_t __compat_uid_t;
 41typedef __kernel_gid_t __compat_gid_t;
 42typedef __kernel_uid32_t __compat_uid32_t;
 43typedef __kernel_uid32_t __compat_gid32_t;
 44typedef __kernel_mode_t compat_mode_t;
 45typedef __kernel_dev_t compat_dev_t;
 46typedef __kernel_loff_t compat_loff_t;
 47typedef __kernel_ipc_pid_t compat_ipc_pid_t;
 48typedef __kernel_daddr_t compat_daddr_t;
 49typedef __kernel_fsid_t	compat_fsid_t;
 50typedef __kernel_timer_t compat_timer_t;
 51typedef __kernel_key_t compat_key_t;
 52typedef int compat_int_t;
 53typedef s64 compat_s64;
 54typedef uint compat_uint_t;
 55typedef u64 compat_u64;
 56
 57/* We use the same register dump format in 32-bit images. */
 58typedef unsigned long compat_elf_greg_t;
 59#define COMPAT_ELF_NGREG (sizeof(struct pt_regs) / sizeof(compat_elf_greg_t))
 60typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG];
 61
 62struct compat_timespec {
 63	compat_time_t	tv_sec;
 64	s32		tv_nsec;
 65};
 66
 67struct compat_timeval {
 68	compat_time_t	tv_sec;
 69	s32		tv_usec;
 70};
 71
 72#define compat_stat stat
 73#define compat_statfs statfs
 74
 75struct compat_sysctl {
 76	unsigned int	name;
 77	int		nlen;
 78	unsigned int	oldval;
 79	unsigned int	oldlenp;
 80	unsigned int	newval;
 81	unsigned int	newlen;
 82	unsigned int	__unused[4];
 83};
 84
 85
 86struct compat_flock {
 87	short		l_type;
 88	short		l_whence;
 89	compat_off_t	l_start;
 90	compat_off_t	l_len;
 91	compat_pid_t	l_pid;
 92};
 93
 94#define F_GETLK64	12	/*  using 'struct flock64' */
 95#define F_SETLK64	13
 96#define F_SETLKW64	14
 97
 98struct compat_flock64 {
 99	short		l_type;
100	short		l_whence;
101	compat_loff_t	l_start;
102	compat_loff_t	l_len;
103	compat_pid_t	l_pid;
104};
105
106#define COMPAT_RLIM_INFINITY		0xffffffff
107
108#define _COMPAT_NSIG		64
109#define _COMPAT_NSIG_BPW	32
110
111typedef u32               compat_sigset_word;
112
113#define COMPAT_OFF_T_MAX	0x7fffffff
114#define COMPAT_LOFF_T_MAX	0x7fffffffffffffffL
115
116struct compat_ipc64_perm {
117	compat_key_t key;
118	__compat_uid32_t uid;
119	__compat_gid32_t gid;
120	__compat_uid32_t cuid;
121	__compat_gid32_t cgid;
122	unsigned short mode;
123	unsigned short __pad1;
124	unsigned short seq;
125	unsigned short __pad2;
126	compat_ulong_t unused1;
127	compat_ulong_t unused2;
128};
129
130struct compat_semid64_ds {
131	struct compat_ipc64_perm sem_perm;
132	compat_time_t  sem_otime;
133	compat_ulong_t __unused1;
134	compat_time_t  sem_ctime;
135	compat_ulong_t __unused2;
136	compat_ulong_t sem_nsems;
137	compat_ulong_t __unused3;
138	compat_ulong_t __unused4;
139};
140
141struct compat_msqid64_ds {
142	struct compat_ipc64_perm msg_perm;
143	compat_time_t  msg_stime;
144	compat_ulong_t __unused1;
145	compat_time_t  msg_rtime;
146	compat_ulong_t __unused2;
147	compat_time_t  msg_ctime;
148	compat_ulong_t __unused3;
149	compat_ulong_t msg_cbytes;
150	compat_ulong_t msg_qnum;
151	compat_ulong_t msg_qbytes;
152	compat_pid_t   msg_lspid;
153	compat_pid_t   msg_lrpid;
154	compat_ulong_t __unused4;
155	compat_ulong_t __unused5;
156};
157
158struct compat_shmid64_ds {
159	struct compat_ipc64_perm shm_perm;
160	compat_size_t  shm_segsz;
161	compat_time_t  shm_atime;
162	compat_ulong_t __unused1;
163	compat_time_t  shm_dtime;
164	compat_ulong_t __unused2;
165	compat_time_t  shm_ctime;
166	compat_ulong_t __unused3;
167	compat_pid_t   shm_cpid;
168	compat_pid_t   shm_lpid;
169	compat_ulong_t shm_nattch;
170	compat_ulong_t __unused4;
171	compat_ulong_t __unused5;
172};
173
174/*
175 * A pointer passed in from user mode. This should not
176 * be used for syscall parameters, just declare them
177 * as pointers because the syscall entry code will have
178 * appropriately converted them already.
179 */
180
181static inline void __user *compat_ptr(compat_uptr_t uptr)
182{
183	return (void __user *)(long)(s32)uptr;
184}
185
186static inline compat_uptr_t ptr_to_compat(void __user *uptr)
187{
188	return (u32)(unsigned long)uptr;
189}
190
191/* Sign-extend when storing a kernel pointer to a user's ptregs. */
192static inline unsigned long ptr_to_compat_reg(void __user *uptr)
193{
194	return (long)(int)(long __force)uptr;
195}
196
197static inline void __user *arch_compat_alloc_user_space(long len)
198{
199	struct pt_regs *regs = task_pt_regs(current);
200	return (void __user *)regs->sp - len;
201}
202
203static inline int is_compat_task(void)
204{
205	return current_thread_info()->status & TS_COMPAT;
206}
207
208extern int compat_setup_rt_frame(int sig, struct k_sigaction *ka,
209				 siginfo_t *info, sigset_t *set,
210				 struct pt_regs *regs);
211
212/* Compat syscalls. */
213struct compat_sigaction;
214struct compat_siginfo;
215struct compat_sigaltstack;
216long compat_sys_execve(const char __user *path,
217		       compat_uptr_t __user *argv,
218		       compat_uptr_t __user *envp, struct pt_regs *);
219long compat_sys_rt_sigaction(int sig, struct compat_sigaction __user *act,
220			     struct compat_sigaction __user *oact,
221			     size_t sigsetsize);
222long compat_sys_rt_sigqueueinfo(int pid, int sig,
223				struct compat_siginfo __user *uinfo);
224long compat_sys_rt_sigreturn(struct pt_regs *);
225long compat_sys_sigaltstack(const struct compat_sigaltstack __user *uss_ptr,
226			    struct compat_sigaltstack __user *uoss_ptr,
227			    struct pt_regs *);
228long compat_sys_truncate64(char __user *filename, u32 dummy, u32 low, u32 high);
229long compat_sys_ftruncate64(unsigned int fd, u32 dummy, u32 low, u32 high);
230long compat_sys_pread64(unsigned int fd, char __user *ubuf, size_t count,
231			u32 dummy, u32 low, u32 high);
232long compat_sys_pwrite64(unsigned int fd, char __user *ubuf, size_t count,
233			 u32 dummy, u32 low, u32 high);
234long compat_sys_lookup_dcookie(u32 low, u32 high, char __user *buf, size_t len);
235long compat_sys_sync_file_range2(int fd, unsigned int flags,
236				 u32 offset_lo, u32 offset_hi,
237				 u32 nbytes_lo, u32 nbytes_hi);
238long compat_sys_fallocate(int fd, int mode,
239			  u32 offset_lo, u32 offset_hi,
240			  u32 len_lo, u32 len_hi);
241long compat_sys_sched_rr_get_interval(compat_pid_t pid,
242				      struct compat_timespec __user *interval);
243
244/* These are the intvec_64.S trampolines. */
245long _compat_sys_execve(const char __user *path,
246			const compat_uptr_t __user *argv,
247			const compat_uptr_t __user *envp);
248long _compat_sys_sigaltstack(const struct compat_sigaltstack __user *uss_ptr,
249			    struct compat_sigaltstack __user *uoss_ptr);
250long _compat_sys_rt_sigreturn(void);
251
252#endif /* _ASM_TILE_COMPAT_H */