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1965aae3 PA |
1 | #ifndef _ASM_X86_COMPAT_H |
2 | #define _ASM_X86_COMPAT_H | |
1da177e4 LT |
3 | |
4 | /* | |
5 | * Architecture specific compatibility types | |
6 | */ | |
7 | #include <linux/types.h> | |
8 | #include <linux/sched.h> | |
d1a797f3 | 9 | #include <asm/processor.h> |
95d1b8f9 | 10 | #include <asm/user32.h> |
fca460f9 | 11 | #include <asm/unistd.h> |
1da177e4 | 12 | |
e28cbf22 CH |
13 | #define COMPAT_USER_HZ 100 |
14 | #define COMPAT_UTS_MACHINE "i686\0\0" | |
1da177e4 LT |
15 | |
16 | typedef u32 compat_size_t; | |
17 | typedef s32 compat_ssize_t; | |
18 | typedef s32 compat_time_t; | |
19 | typedef s32 compat_clock_t; | |
20 | typedef s32 compat_pid_t; | |
202e5979 SR |
21 | typedef u16 __compat_uid_t; |
22 | typedef u16 __compat_gid_t; | |
23 | typedef u32 __compat_uid32_t; | |
24 | typedef u32 __compat_gid32_t; | |
1da177e4 LT |
25 | typedef u16 compat_mode_t; |
26 | typedef u32 compat_ino_t; | |
27 | typedef u16 compat_dev_t; | |
28 | typedef s32 compat_off_t; | |
29 | typedef s64 compat_loff_t; | |
30 | typedef u16 compat_nlink_t; | |
31 | typedef u16 compat_ipc_pid_t; | |
32 | typedef s32 compat_daddr_t; | |
33 | typedef u32 compat_caddr_t; | |
34 | typedef __kernel_fsid_t compat_fsid_t; | |
35 | typedef s32 compat_timer_t; | |
36 | typedef s32 compat_key_t; | |
37 | ||
38 | typedef s32 compat_int_t; | |
39 | typedef s32 compat_long_t; | |
4b777587 | 40 | typedef s64 __attribute__((aligned(4))) compat_s64; |
1da177e4 LT |
41 | typedef u32 compat_uint_t; |
42 | typedef u32 compat_ulong_t; | |
4b777587 | 43 | typedef u64 __attribute__((aligned(4))) compat_u64; |
751f409d | 44 | typedef u32 compat_uptr_t; |
1da177e4 LT |
45 | |
46 | struct compat_timespec { | |
47 | compat_time_t tv_sec; | |
48 | s32 tv_nsec; | |
49 | }; | |
50 | ||
51 | struct compat_timeval { | |
52 | compat_time_t tv_sec; | |
53 | s32 tv_usec; | |
54 | }; | |
55 | ||
56 | struct compat_stat { | |
57 | compat_dev_t st_dev; | |
58 | u16 __pad1; | |
59 | compat_ino_t st_ino; | |
60 | compat_mode_t st_mode; | |
61 | compat_nlink_t st_nlink; | |
202e5979 SR |
62 | __compat_uid_t st_uid; |
63 | __compat_gid_t st_gid; | |
1da177e4 LT |
64 | compat_dev_t st_rdev; |
65 | u16 __pad2; | |
66 | u32 st_size; | |
67 | u32 st_blksize; | |
68 | u32 st_blocks; | |
69 | u32 st_atime; | |
70 | u32 st_atime_nsec; | |
71 | u32 st_mtime; | |
72 | u32 st_mtime_nsec; | |
73 | u32 st_ctime; | |
74 | u32 st_ctime_nsec; | |
75 | u32 __unused4; | |
76 | u32 __unused5; | |
77 | }; | |
78 | ||
79 | struct compat_flock { | |
80 | short l_type; | |
81 | short l_whence; | |
82 | compat_off_t l_start; | |
83 | compat_off_t l_len; | |
84 | compat_pid_t l_pid; | |
85 | }; | |
86 | ||
87 | #define F_GETLK64 12 /* using 'struct flock64' */ | |
88 | #define F_SETLK64 13 | |
89 | #define F_SETLKW64 14 | |
90 | ||
91 | /* | |
92 | * IA32 uses 4 byte alignment for 64 bit quantities, | |
93 | * so we need to pack this structure. | |
94 | */ | |
95 | struct compat_flock64 { | |
96 | short l_type; | |
97 | short l_whence; | |
98 | compat_loff_t l_start; | |
99 | compat_loff_t l_len; | |
100 | compat_pid_t l_pid; | |
101 | } __attribute__((packed)); | |
102 | ||
103 | struct compat_statfs { | |
104 | int f_type; | |
105 | int f_bsize; | |
106 | int f_blocks; | |
107 | int f_bfree; | |
108 | int f_bavail; | |
109 | int f_files; | |
110 | int f_ffree; | |
111 | compat_fsid_t f_fsid; | |
112 | int f_namelen; /* SunOS ignores this field. */ | |
113 | int f_frsize; | |
1448c721 EB |
114 | int f_flags; |
115 | int f_spare[4]; | |
1da177e4 LT |
116 | }; |
117 | ||
118 | #define COMPAT_RLIM_OLD_INFINITY 0x7fffffff | |
119 | #define COMPAT_RLIM_INFINITY 0xffffffff | |
120 | ||
121 | typedef u32 compat_old_sigset_t; /* at least 32 bits */ | |
122 | ||
123 | #define _COMPAT_NSIG 64 | |
124 | #define _COMPAT_NSIG_BPW 32 | |
125 | ||
126 | typedef u32 compat_sigset_word; | |
127 | ||
751f409d DV |
128 | typedef union compat_sigval { |
129 | compat_int_t sival_int; | |
130 | compat_uptr_t sival_ptr; | |
131 | } compat_sigval_t; | |
132 | ||
133 | typedef struct compat_siginfo { | |
134 | int si_signo; | |
135 | int si_errno; | |
136 | int si_code; | |
137 | ||
138 | union { | |
139 | int _pad[128/sizeof(int) - 3]; | |
140 | ||
141 | /* kill() */ | |
142 | struct { | |
143 | unsigned int _pid; /* sender's pid */ | |
144 | unsigned int _uid; /* sender's uid */ | |
145 | } _kill; | |
146 | ||
147 | /* POSIX.1b timers */ | |
148 | struct { | |
149 | compat_timer_t _tid; /* timer id */ | |
150 | int _overrun; /* overrun count */ | |
151 | compat_sigval_t _sigval; /* same as below */ | |
152 | int _sys_private; /* not to be passed to user */ | |
153 | int _overrun_incr; /* amount to add to overrun */ | |
154 | } _timer; | |
155 | ||
156 | /* POSIX.1b signals */ | |
157 | struct { | |
158 | unsigned int _pid; /* sender's pid */ | |
159 | unsigned int _uid; /* sender's uid */ | |
160 | compat_sigval_t _sigval; | |
161 | } _rt; | |
162 | ||
163 | /* SIGCHLD */ | |
164 | struct { | |
165 | unsigned int _pid; /* which child */ | |
166 | unsigned int _uid; /* sender's uid */ | |
167 | int _status; /* exit code */ | |
168 | compat_clock_t _utime; | |
169 | compat_clock_t _stime; | |
170 | } _sigchld; | |
171 | ||
172 | /* SIGCHLD (x32 version) */ | |
173 | struct { | |
174 | unsigned int _pid; /* which child */ | |
175 | unsigned int _uid; /* sender's uid */ | |
176 | int _status; /* exit code */ | |
177 | compat_s64 _utime; | |
178 | compat_s64 _stime; | |
179 | } _sigchld_x32; | |
180 | ||
181 | /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ | |
182 | struct { | |
183 | unsigned int _addr; /* faulting insn/memory ref. */ | |
184 | } _sigfault; | |
185 | ||
186 | /* SIGPOLL */ | |
187 | struct { | |
188 | int _band; /* POLL_IN, POLL_OUT, POLL_MSG */ | |
189 | int _fd; | |
190 | } _sigpoll; | |
191 | ||
192 | struct { | |
193 | unsigned int _call_addr; /* calling insn */ | |
194 | int _syscall; /* triggering system call number */ | |
195 | unsigned int _arch; /* AUDIT_ARCH_* of syscall */ | |
196 | } _sigsys; | |
197 | } _sifields; | |
198 | } compat_siginfo_t; | |
199 | ||
1da177e4 LT |
200 | #define COMPAT_OFF_T_MAX 0x7fffffff |
201 | #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL | |
202 | ||
203 | struct compat_ipc64_perm { | |
204 | compat_key_t key; | |
202e5979 SR |
205 | __compat_uid32_t uid; |
206 | __compat_gid32_t gid; | |
207 | __compat_uid32_t cuid; | |
208 | __compat_gid32_t cgid; | |
1da177e4 LT |
209 | unsigned short mode; |
210 | unsigned short __pad1; | |
211 | unsigned short seq; | |
212 | unsigned short __pad2; | |
213 | compat_ulong_t unused1; | |
214 | compat_ulong_t unused2; | |
215 | }; | |
216 | ||
217 | struct compat_semid64_ds { | |
218 | struct compat_ipc64_perm sem_perm; | |
219 | compat_time_t sem_otime; | |
220 | compat_ulong_t __unused1; | |
221 | compat_time_t sem_ctime; | |
222 | compat_ulong_t __unused2; | |
223 | compat_ulong_t sem_nsems; | |
224 | compat_ulong_t __unused3; | |
225 | compat_ulong_t __unused4; | |
226 | }; | |
227 | ||
228 | struct compat_msqid64_ds { | |
229 | struct compat_ipc64_perm msg_perm; | |
230 | compat_time_t msg_stime; | |
231 | compat_ulong_t __unused1; | |
232 | compat_time_t msg_rtime; | |
233 | compat_ulong_t __unused2; | |
234 | compat_time_t msg_ctime; | |
235 | compat_ulong_t __unused3; | |
236 | compat_ulong_t msg_cbytes; | |
237 | compat_ulong_t msg_qnum; | |
238 | compat_ulong_t msg_qbytes; | |
239 | compat_pid_t msg_lspid; | |
240 | compat_pid_t msg_lrpid; | |
241 | compat_ulong_t __unused4; | |
242 | compat_ulong_t __unused5; | |
243 | }; | |
244 | ||
245 | struct compat_shmid64_ds { | |
246 | struct compat_ipc64_perm shm_perm; | |
247 | compat_size_t shm_segsz; | |
248 | compat_time_t shm_atime; | |
249 | compat_ulong_t __unused1; | |
250 | compat_time_t shm_dtime; | |
251 | compat_ulong_t __unused2; | |
252 | compat_time_t shm_ctime; | |
253 | compat_ulong_t __unused3; | |
254 | compat_pid_t shm_cpid; | |
255 | compat_pid_t shm_lpid; | |
256 | compat_ulong_t shm_nattch; | |
257 | compat_ulong_t __unused4; | |
258 | compat_ulong_t __unused5; | |
259 | }; | |
260 | ||
95d1b8f9 RM |
261 | /* |
262 | * The type of struct elf_prstatus.pr_reg in compatible core dumps. | |
263 | */ | |
d1a797f3 PA |
264 | #ifdef CONFIG_X86_X32_ABI |
265 | typedef struct user_regs_struct compat_elf_gregset_t; | |
266 | ||
267 | #define PR_REG_SIZE(S) (test_thread_flag(TIF_IA32) ? 68 : 216) | |
268 | #define PRSTATUS_SIZE(S) (test_thread_flag(TIF_IA32) ? 144 : 296) | |
269 | #define SET_PR_FPVALID(S,V) \ | |
270 | do { *(int *) (((void *) &((S)->pr_reg)) + PR_REG_SIZE(0)) = (V); } \ | |
271 | while (0) | |
272 | ||
273 | #define COMPAT_USE_64BIT_TIME \ | |
274 | (!!(task_pt_regs(current)->orig_ax & __X32_SYSCALL_BIT)) | |
275 | #else | |
95d1b8f9 | 276 | typedef struct user_regs_struct32 compat_elf_gregset_t; |
d1a797f3 | 277 | #endif |
95d1b8f9 | 278 | |
1da177e4 LT |
279 | /* |
280 | * A pointer passed in from user mode. This should not | |
281 | * be used for syscall parameters, just declare them | |
282 | * as pointers because the syscall entry code will have | |
8b3de0df | 283 | * appropriately converted them already. |
1da177e4 | 284 | */ |
1da177e4 LT |
285 | |
286 | static inline void __user *compat_ptr(compat_uptr_t uptr) | |
287 | { | |
288 | return (void __user *)(unsigned long)uptr; | |
289 | } | |
290 | ||
291 | static inline compat_uptr_t ptr_to_compat(void __user *uptr) | |
292 | { | |
293 | return (u32)(unsigned long)uptr; | |
294 | } | |
295 | ||
c41d68a5 | 296 | static inline void __user *arch_compat_alloc_user_space(long len) |
1da177e4 | 297 | { |
d1a797f3 PA |
298 | compat_uptr_t sp; |
299 | ||
300 | if (test_thread_flag(TIF_IA32)) { | |
301 | sp = task_pt_regs(current)->sp; | |
302 | } else { | |
303 | /* -128 for the x32 ABI redzone */ | |
263042e4 | 304 | sp = task_pt_regs(current)->sp - 128; |
d1a797f3 PA |
305 | } |
306 | ||
307 | return (void __user *)round_down(sp - len, 16); | |
1da177e4 LT |
308 | } |
309 | ||
abfb9498 | 310 | static inline bool in_x32_syscall(void) |
a628b684 | 311 | { |
fca460f9 PA |
312 | #ifdef CONFIG_X86_X32_ABI |
313 | if (task_pt_regs(current)->orig_ax & __X32_SYSCALL_BIT) | |
314 | return true; | |
315 | #endif | |
316 | return false; | |
bf2fcc6f AK |
317 | } |
318 | ||
f970165b | 319 | static inline bool in_compat_syscall(void) |
a628b684 | 320 | { |
abfb9498 | 321 | return in_ia32_syscall() || in_x32_syscall(); |
a628b684 | 322 | } |
f970165b | 323 | #define in_compat_syscall in_compat_syscall /* override the generic impl */ |
a628b684 | 324 | |
1965aae3 | 325 | #endif /* _ASM_X86_COMPAT_H */ |