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. */
27 typedef s32 compat_long_t;
28 typedef u32 compat_ulong_t;
29 typedef u32 compat_size_t;
30 typedef s32 compat_ssize_t;
31 typedef s32 compat_off_t;
32 typedef s32 compat_time_t;
33 typedef s32 compat_clock_t;
34 typedef u32 compat_ino_t;
35 typedef u32 compat_caddr_t;
36 typedef u32 compat_uptr_t;
37
38 /* Many types are "int" or otherwise the same. */
39 typedef __kernel_pid_t compat_pid_t;
40 typedef __kernel_uid_t __compat_uid_t;
41 typedef __kernel_gid_t __compat_gid_t;
42 typedef __kernel_uid32_t __compat_uid32_t;
43 typedef __kernel_uid32_t __compat_gid32_t;
44 typedef __kernel_mode_t compat_mode_t;
45 typedef __kernel_dev_t compat_dev_t;
46 typedef __kernel_loff_t compat_loff_t;
47 typedef __kernel_nlink_t compat_nlink_t;
48 typedef __kernel_ipc_pid_t compat_ipc_pid_t;
49 typedef __kernel_daddr_t compat_daddr_t;
50 typedef __kernel_fsid_t compat_fsid_t;
51 typedef __kernel_timer_t compat_timer_t;
52 typedef __kernel_key_t compat_key_t;
53 typedef int compat_int_t;
54 typedef s64 compat_s64;
55 typedef uint compat_uint_t;
56 typedef u64 compat_u64;
57
58 /* We use the same register dump format in 32-bit images. */
59 typedef unsigned long compat_elf_greg_t;
60 #define COMPAT_ELF_NGREG (sizeof(struct pt_regs) / sizeof(compat_elf_greg_t))
61 typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG];
62
63 struct compat_timespec {
64 compat_time_t tv_sec;
65 s32 tv_nsec;
66 };
67
68 struct compat_timeval {
69 compat_time_t tv_sec;
70 s32 tv_usec;
71 };
72
73 #define compat_stat stat
74 #define compat_statfs statfs
75
76 struct compat_sysctl {
77 unsigned int name;
78 int nlen;
79 unsigned int oldval;
80 unsigned int oldlenp;
81 unsigned int newval;
82 unsigned int newlen;
83 unsigned int __unused[4];
84 };
85
86
87 struct compat_flock {
88 short l_type;
89 short l_whence;
90 compat_off_t l_start;
91 compat_off_t l_len;
92 compat_pid_t l_pid;
93 };
94
95 #define F_GETLK64 12 /* using 'struct flock64' */
96 #define F_SETLK64 13
97 #define F_SETLKW64 14
98
99 struct compat_flock64 {
100 short l_type;
101 short l_whence;
102 compat_loff_t l_start;
103 compat_loff_t l_len;
104 compat_pid_t l_pid;
105 };
106
107 #define COMPAT_RLIM_INFINITY 0xffffffff
108
109 #define _COMPAT_NSIG 64
110 #define _COMPAT_NSIG_BPW 32
111
112 typedef u32 compat_sigset_word;
113
114 #define COMPAT_OFF_T_MAX 0x7fffffff
115 #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL
116
117 struct compat_ipc64_perm {
118 compat_key_t key;
119 __compat_uid32_t uid;
120 __compat_gid32_t gid;
121 __compat_uid32_t cuid;
122 __compat_gid32_t cgid;
123 unsigned short mode;
124 unsigned short __pad1;
125 unsigned short seq;
126 unsigned short __pad2;
127 compat_ulong_t unused1;
128 compat_ulong_t unused2;
129 };
130
131 struct compat_semid64_ds {
132 struct compat_ipc64_perm sem_perm;
133 compat_time_t sem_otime;
134 compat_ulong_t __unused1;
135 compat_time_t sem_ctime;
136 compat_ulong_t __unused2;
137 compat_ulong_t sem_nsems;
138 compat_ulong_t __unused3;
139 compat_ulong_t __unused4;
140 };
141
142 struct compat_msqid64_ds {
143 struct compat_ipc64_perm msg_perm;
144 compat_time_t msg_stime;
145 compat_ulong_t __unused1;
146 compat_time_t msg_rtime;
147 compat_ulong_t __unused2;
148 compat_time_t msg_ctime;
149 compat_ulong_t __unused3;
150 compat_ulong_t msg_cbytes;
151 compat_ulong_t msg_qnum;
152 compat_ulong_t msg_qbytes;
153 compat_pid_t msg_lspid;
154 compat_pid_t msg_lrpid;
155 compat_ulong_t __unused4;
156 compat_ulong_t __unused5;
157 };
158
159 struct compat_shmid64_ds {
160 struct compat_ipc64_perm shm_perm;
161 compat_size_t shm_segsz;
162 compat_time_t shm_atime;
163 compat_ulong_t __unused1;
164 compat_time_t shm_dtime;
165 compat_ulong_t __unused2;
166 compat_time_t shm_ctime;
167 compat_ulong_t __unused3;
168 compat_pid_t shm_cpid;
169 compat_pid_t shm_lpid;
170 compat_ulong_t shm_nattch;
171 compat_ulong_t __unused4;
172 compat_ulong_t __unused5;
173 };
174
175 /*
176 * A pointer passed in from user mode. This should not
177 * be used for syscall parameters, just declare them
178 * as pointers because the syscall entry code will have
179 * appropriately converted them already.
180 */
181
compat_ptr(compat_uptr_t uptr)182 static inline void __user *compat_ptr(compat_uptr_t uptr)
183 {
184 return (void __user *)(long)(s32)uptr;
185 }
186
ptr_to_compat(void __user * uptr)187 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
188 {
189 return (u32)(unsigned long)uptr;
190 }
191
192 /* Sign-extend when storing a kernel pointer to a user's ptregs. */
ptr_to_compat_reg(void __user * uptr)193 static inline unsigned long ptr_to_compat_reg(void __user *uptr)
194 {
195 return (long)(int)(long __force)uptr;
196 }
197
arch_compat_alloc_user_space(long len)198 static inline void __user *arch_compat_alloc_user_space(long len)
199 {
200 struct pt_regs *regs = task_pt_regs(current);
201 return (void __user *)regs->sp - len;
202 }
203
is_compat_task(void)204 static inline int is_compat_task(void)
205 {
206 return current_thread_info()->status & TS_COMPAT;
207 }
208
209 extern int compat_setup_rt_frame(int sig, struct k_sigaction *ka,
210 siginfo_t *info, sigset_t *set,
211 struct pt_regs *regs);
212
213 /* Compat syscalls. */
214 struct compat_sigaction;
215 struct compat_siginfo;
216 struct compat_sigaltstack;
217 long compat_sys_execve(const char __user *path,
218 compat_uptr_t __user *argv,
219 compat_uptr_t __user *envp, struct pt_regs *);
220 long compat_sys_rt_sigaction(int sig, struct compat_sigaction __user *act,
221 struct compat_sigaction __user *oact,
222 size_t sigsetsize);
223 long compat_sys_rt_sigqueueinfo(int pid, int sig,
224 struct compat_siginfo __user *uinfo);
225 long compat_sys_rt_sigreturn(struct pt_regs *);
226 long compat_sys_sigaltstack(const struct compat_sigaltstack __user *uss_ptr,
227 struct compat_sigaltstack __user *uoss_ptr,
228 struct pt_regs *);
229 long compat_sys_truncate64(char __user *filename, u32 dummy, u32 low, u32 high);
230 long compat_sys_ftruncate64(unsigned int fd, u32 dummy, u32 low, u32 high);
231 long compat_sys_pread64(unsigned int fd, char __user *ubuf, size_t count,
232 u32 dummy, u32 low, u32 high);
233 long compat_sys_pwrite64(unsigned int fd, char __user *ubuf, size_t count,
234 u32 dummy, u32 low, u32 high);
235 long compat_sys_lookup_dcookie(u32 low, u32 high, char __user *buf, size_t len);
236 long compat_sys_sync_file_range2(int fd, unsigned int flags,
237 u32 offset_lo, u32 offset_hi,
238 u32 nbytes_lo, u32 nbytes_hi);
239 long compat_sys_fallocate(int fd, int mode,
240 u32 offset_lo, u32 offset_hi,
241 u32 len_lo, u32 len_hi);
242 long compat_sys_sched_rr_get_interval(compat_pid_t pid,
243 struct compat_timespec __user *interval);
244
245 /* Versions of compat functions that differ from generic Linux. */
246 struct compat_msgbuf;
247 long tile_compat_sys_msgsnd(int msqid,
248 struct compat_msgbuf __user *msgp,
249 size_t msgsz, int msgflg);
250 long tile_compat_sys_msgrcv(int msqid,
251 struct compat_msgbuf __user *msgp,
252 size_t msgsz, long msgtyp, int msgflg);
253 long tile_compat_sys_ptrace(compat_long_t request, compat_long_t pid,
254 compat_long_t addr, compat_long_t data);
255
256 /* Tilera Linux syscalls that don't have "compat" versions. */
257 #define compat_sys_flush_cache sys_flush_cache
258
259 /* These are the intvec_64.S trampolines. */
260 long _compat_sys_execve(const char __user *path,
261 const compat_uptr_t __user *argv,
262 const compat_uptr_t __user *envp);
263 long _compat_sys_sigaltstack(const struct compat_sigaltstack __user *uss_ptr,
264 struct compat_sigaltstack __user *uoss_ptr);
265 long _compat_sys_rt_sigreturn(void);
266
267 #endif /* _ASM_TILE_COMPAT_H */
268