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git.proxmox.com Git - mirror_ubuntu-kernels.git/blob - arch/powerpc/kernel/sys_ppc32.c
2 * sys_ppc32.c: Conversion between 32bit and 64bit native syscalls.
4 * Copyright (C) 2001 IBM
5 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
6 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
8 * These routines maintain argument size conversion between 32bit and 64bit
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
17 #include <linux/kernel.h>
18 #include <linux/sched.h>
21 #include <linux/file.h>
22 #include <linux/signal.h>
23 #include <linux/resource.h>
24 #include <linux/times.h>
25 #include <linux/smp.h>
26 #include <linux/sem.h>
27 #include <linux/msg.h>
28 #include <linux/shm.h>
29 #include <linux/poll.h>
30 #include <linux/personality.h>
31 #include <linux/stat.h>
32 #include <linux/mman.h>
34 #include <linux/syscalls.h>
35 #include <linux/unistd.h>
36 #include <linux/sysctl.h>
37 #include <linux/binfmts.h>
38 #include <linux/security.h>
39 #include <linux/compat.h>
40 #include <linux/ptrace.h>
41 #include <linux/elf.h>
42 #include <linux/ipc.h>
43 #include <linux/slab.h>
45 #include <asm/ptrace.h>
46 #include <asm/types.h>
47 #include <linux/uaccess.h>
48 #include <asm/unistd.h>
50 #include <asm/mmu_context.h>
51 #include <asm/ppc-pci.h>
52 #include <asm/syscalls.h>
53 #include <asm/switch_to.h>
55 unsigned long compat_sys_mmap2(unsigned long addr
, size_t len
,
56 unsigned long prot
, unsigned long flags
,
57 unsigned long fd
, unsigned long pgoff
)
59 /* This should remain 12 even if PAGE_SIZE changes */
60 return sys_mmap(addr
, len
, prot
, flags
, fd
, pgoff
<< 12);
65 * The 32 bit ABI passes long longs in an odd even register pair.
68 compat_ssize_t
compat_sys_pread64(unsigned int fd
, char __user
*ubuf
, compat_size_t count
,
69 u32 reg6
, u32 poshi
, u32 poslo
)
71 return ksys_pread64(fd
, ubuf
, count
, ((loff_t
)poshi
<< 32) | poslo
);
74 compat_ssize_t
compat_sys_pwrite64(unsigned int fd
, const char __user
*ubuf
, compat_size_t count
,
75 u32 reg6
, u32 poshi
, u32 poslo
)
77 return ksys_pwrite64(fd
, ubuf
, count
, ((loff_t
)poshi
<< 32) | poslo
);
80 compat_ssize_t
compat_sys_readahead(int fd
, u32 r4
, u32 offhi
, u32 offlo
, u32 count
)
82 return ksys_readahead(fd
, ((loff_t
)offhi
<< 32) | offlo
, count
);
85 asmlinkage
int compat_sys_truncate64(const char __user
* path
, u32 reg4
,
86 unsigned long high
, unsigned long low
)
88 return ksys_truncate(path
, (high
<< 32) | low
);
91 asmlinkage
long compat_sys_fallocate(int fd
, int mode
, u32 offhi
, u32 offlo
,
94 return ksys_fallocate(fd
, mode
, ((loff_t
)offhi
<< 32) | offlo
,
95 ((loff_t
)lenhi
<< 32) | lenlo
);
98 asmlinkage
int compat_sys_ftruncate64(unsigned int fd
, u32 reg4
, unsigned long high
,
101 return ksys_ftruncate(fd
, (high
<< 32) | low
);
104 long ppc32_fadvise64(int fd
, u32 unused
, u32 offset_high
, u32 offset_low
,
105 size_t len
, int advice
)
107 return ksys_fadvise64_64(fd
, (u64
)offset_high
<< 32 | offset_low
, len
,
111 asmlinkage
long compat_sys_sync_file_range2(int fd
, unsigned int flags
,
112 unsigned offset_hi
, unsigned offset_lo
,
113 unsigned nbytes_hi
, unsigned nbytes_lo
)
115 loff_t offset
= ((loff_t
)offset_hi
<< 32) | offset_lo
;
116 loff_t nbytes
= ((loff_t
)nbytes_hi
<< 32) | nbytes_lo
;
118 return ksys_sync_file_range(fd
, offset
, nbytes
, flags
);