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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/* Adjust unistd.h to provide 32-bit numbers and functions. */
16#define __SYSCALL_COMPAT
17
18#include <linux/compat.h>
19#include <linux/syscalls.h>
20#include <linux/kdev_t.h>
21#include <linux/fs.h>
22#include <linux/fcntl.h>
23#include <linux/uaccess.h>
24#include <linux/signal.h>
25#include <asm/syscalls.h>
26
27/*
28 * Syscalls that take 64-bit numbers traditionally take them in 32-bit
29 * "high" and "low" value parts on 32-bit architectures.
30 * In principle, one could imagine passing some register arguments as
31 * fully 64-bit on TILE-Gx in 32-bit mode, but it seems easier to
32 * adapt the usual convention.
33 */
34
35long compat_sys_truncate64(char __user *filename, u32 dummy, u32 low, u32 high)
36{
37 return sys_truncate(filename, ((loff_t)high << 32) | low);
38}
39
40long compat_sys_ftruncate64(unsigned int fd, u32 dummy, u32 low, u32 high)
41{
42 return sys_ftruncate(fd, ((loff_t)high << 32) | low);
43}
44
45long compat_sys_pread64(unsigned int fd, char __user *ubuf, size_t count,
46 u32 dummy, u32 low, u32 high)
47{
48 return sys_pread64(fd, ubuf, count, ((loff_t)high << 32) | low);
49}
50
51long compat_sys_pwrite64(unsigned int fd, char __user *ubuf, size_t count,
52 u32 dummy, u32 low, u32 high)
53{
54 return sys_pwrite64(fd, ubuf, count, ((loff_t)high << 32) | low);
55}
56
57long compat_sys_lookup_dcookie(u32 low, u32 high, char __user *buf, size_t len)
58{
59 return sys_lookup_dcookie(((loff_t)high << 32) | low, buf, len);
60}
61
62long compat_sys_sync_file_range2(int fd, unsigned int flags,
63 u32 offset_lo, u32 offset_hi,
64 u32 nbytes_lo, u32 nbytes_hi)
65{
66 return sys_sync_file_range(fd, ((loff_t)offset_hi << 32) | offset_lo,
67 ((loff_t)nbytes_hi << 32) | nbytes_lo,
68 flags);
69}
70
71long compat_sys_fallocate(int fd, int mode,
72 u32 offset_lo, u32 offset_hi,
73 u32 len_lo, u32 len_hi)
74{
75 return sys_fallocate(fd, mode, ((loff_t)offset_hi << 32) | offset_lo,
76 ((loff_t)len_hi << 32) | len_lo);
77}
78
79
80
81long compat_sys_sched_rr_get_interval(compat_pid_t pid,
82 struct compat_timespec __user *interval)
83{
84 struct timespec t;
85 int ret;
86 mm_segment_t old_fs = get_fs();
87
88 set_fs(KERNEL_DS);
89 ret = sys_sched_rr_get_interval(pid,
90 (struct timespec __force __user *)&t);
91 set_fs(old_fs);
92 if (put_compat_timespec(&t, interval))
93 return -EFAULT;
94 return ret;
95}
96
97/* Provide the compat syscall number to call mapping. */
98#undef __SYSCALL
99#define __SYSCALL(nr, call) [nr] = (call),
100
101/* See comments in sys.c */
102#define compat_sys_fadvise64_64 sys32_fadvise64_64
103#define compat_sys_readahead sys32_readahead
104
105/* Call the trampolines to manage pt_regs where necessary. */
106#define compat_sys_execve _compat_sys_execve
107#define compat_sys_sigaltstack _compat_sys_sigaltstack
108#define compat_sys_rt_sigreturn _compat_sys_rt_sigreturn
109#define sys_clone _sys_clone
110
111/*
112 * Note that we can't include <linux/unistd.h> here since the header
113 * guard will defeat us; <asm/unistd.h> checks for __SYSCALL as well.
114 */
115void *compat_sys_call_table[__NR_syscalls] = {
116 [0 ... __NR_syscalls-1] = sys_ni_syscall,
117#include <asm/unistd.h>
118};
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/* Adjust unistd.h to provide 32-bit numbers and functions. */
16#define __SYSCALL_COMPAT
17
18#include <linux/compat.h>
19#include <linux/syscalls.h>
20#include <linux/kdev_t.h>
21#include <linux/fs.h>
22#include <linux/fcntl.h>
23#include <linux/uaccess.h>
24#include <linux/signal.h>
25#include <asm/syscalls.h>
26#include <asm/byteorder.h>
27
28/*
29 * Syscalls that take 64-bit numbers traditionally take them in 32-bit
30 * "high" and "low" value parts on 32-bit architectures.
31 * In principle, one could imagine passing some register arguments as
32 * fully 64-bit on TILE-Gx in 32-bit mode, but it seems easier to
33 * adopt the usual convention.
34 */
35
36#ifdef __BIG_ENDIAN
37#define SYSCALL_PAIR(name) u32, name ## _hi, u32, name ## _lo
38#else
39#define SYSCALL_PAIR(name) u32, name ## _lo, u32, name ## _hi
40#endif
41
42COMPAT_SYSCALL_DEFINE4(truncate64, char __user *, filename, u32, dummy,
43 SYSCALL_PAIR(length))
44{
45 return sys_truncate(filename, ((loff_t)length_hi << 32) | length_lo);
46}
47
48COMPAT_SYSCALL_DEFINE4(ftruncate64, unsigned int, fd, u32, dummy,
49 SYSCALL_PAIR(length))
50{
51 return sys_ftruncate(fd, ((loff_t)length_hi << 32) | length_lo);
52}
53
54COMPAT_SYSCALL_DEFINE6(pread64, unsigned int, fd, char __user *, ubuf,
55 size_t, count, u32, dummy, SYSCALL_PAIR(offset))
56{
57 return sys_pread64(fd, ubuf, count,
58 ((loff_t)offset_hi << 32) | offset_lo);
59}
60
61COMPAT_SYSCALL_DEFINE6(pwrite64, unsigned int, fd, char __user *, ubuf,
62 size_t, count, u32, dummy, SYSCALL_PAIR(offset))
63{
64 return sys_pwrite64(fd, ubuf, count,
65 ((loff_t)offset_hi << 32) | offset_lo);
66}
67
68COMPAT_SYSCALL_DEFINE6(sync_file_range2, int, fd, unsigned int, flags,
69 SYSCALL_PAIR(offset), SYSCALL_PAIR(nbytes))
70{
71 return sys_sync_file_range(fd, ((loff_t)offset_hi << 32) | offset_lo,
72 ((loff_t)nbytes_hi << 32) | nbytes_lo,
73 flags);
74}
75
76COMPAT_SYSCALL_DEFINE6(fallocate, int, fd, int, mode,
77 SYSCALL_PAIR(offset), SYSCALL_PAIR(len))
78{
79 return sys_fallocate(fd, mode, ((loff_t)offset_hi << 32) | offset_lo,
80 ((loff_t)len_hi << 32) | len_lo);
81}
82
83/*
84 * Avoid bug in generic sys_llseek() that specifies offset_high and
85 * offset_low as "unsigned long", thus making it possible to pass
86 * a sign-extended high 32 bits in offset_low.
87 * Note that we do not use SYSCALL_PAIR here since glibc passes the
88 * high and low parts explicitly in that order.
89 */
90COMPAT_SYSCALL_DEFINE5(llseek, unsigned int, fd, unsigned int, offset_high,
91 unsigned int, offset_low, loff_t __user *, result,
92 unsigned int, origin)
93{
94 return sys_llseek(fd, offset_high, offset_low, result, origin);
95}
96
97/* Provide the compat syscall number to call mapping. */
98#undef __SYSCALL
99#define __SYSCALL(nr, call) [nr] = (call),
100
101/* See comments in sys.c */
102#define compat_sys_fadvise64_64 sys32_fadvise64_64
103#define compat_sys_readahead sys32_readahead
104#define sys_llseek compat_sys_llseek
105
106/* Call the assembly trampolines where necessary. */
107#define compat_sys_rt_sigreturn _compat_sys_rt_sigreturn
108#define sys_clone _sys_clone
109
110/*
111 * Note that we can't include <linux/unistd.h> here since the header
112 * guard will defeat us; <asm/unistd.h> checks for __SYSCALL as well.
113 */
114void *compat_sys_call_table[__NR_syscalls] = {
115 [0 ... __NR_syscalls-1] = sys_ni_syscall,
116#include <asm/unistd.h>
117};