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);