/* * sys_ppc32.c: Conversion between 32bit and 64bit native syscalls. * * Copyright (C) 2001 IBM * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) * * These routines maintain argument size conversion between 32bit and 64bit * environment. * *      This program is free software; you can redistribute it and/or *      modify it under the terms of the GNU General Public License *      as published by the Free Software Foundation; either version *      2 of the License, or (at your option) any later version. */ #include <linux/kernel.h>#include <linux/sched.h>#include <linux/fs.h> #include <linux/mm.h> #include <linux/file.h> #include <linux/signal.h>#include <linux/resource.h>#include <linux/times.h>#include <linux/smp.h>#include <linux/sem.h>#include <linux/msg.h>#include <linux/shm.h>#include <linux/poll.h>#include <linux/personality.h>#include <linux/stat.h>#include <linux/mman.h>#include <linux/in.h>#include <linux/syscalls.h>#include <linux/unistd.h>#include <linux/sysctl.h>#include <linux/binfmts.h>#include <linux/security.h>#include <linux/compat.h>#include <linux/ptrace.h>#include <linux/elf.h>#include <linux/ipc.h>#include <linux/slab.h> #include <asm/ptrace.h>#include <asm/types.h>#include <asm/uaccess.h>#include <asm/unistd.h>#include <asm/time.h>#include <asm/mmu_context.h>#include <asm/ppc-pci.h>#include <asm/syscalls.h>#include <asm/switch_to.h>  asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp,		compat_ulong_t __user *outp, compat_ulong_t __user *exp,		compat_uptr_t tvp_x){	/* sign extend n */	return compat_sys_select((int)n, inp, outp, exp, compat_ptr(tvp_x));} unsigned long compat_sys_mmap2(unsigned long addr, size_t len,			  unsigned long prot, unsigned long flags,			  unsigned long fd, unsigned long pgoff){	/* This should remain 12 even if PAGE_SIZE changes */	return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);} /*  * long long munging: * The 32 bit ABI passes long longs in an odd even register pair. */ compat_ssize_t compat_sys_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,			     u32 reg6, u32 poshi, u32 poslo){	return sys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);} compat_ssize_t compat_sys_pwrite64(unsigned int fd, const char __user *ubuf, compat_size_t count,			      u32 reg6, u32 poshi, u32 poslo){	return sys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);} compat_ssize_t compat_sys_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count){	return sys_readahead(fd, ((loff_t)offhi << 32) | offlo, count);} asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4,				unsigned long high, unsigned long low){	return sys_truncate(path, (high << 32) | low);} asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,				     u32 lenhi, u32 lenlo){	return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,			     ((loff_t)lenhi << 32) | lenlo);} asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long high,				 unsigned long low){	return sys_ftruncate(fd, (high << 32) | low);} long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,		     size_t len, int advice){	return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, len,			     advice);} asmlinkage long compat_sys_sync_file_range2(int fd, unsigned int flags,				   unsigned offset_hi, unsigned offset_lo,				   unsigned nbytes_hi, unsigned nbytes_lo){	loff_t offset = ((loff_t)offset_hi << 32) | offset_lo;	loff_t nbytes = ((loff_t)nbytes_hi << 32) | nbytes_lo; 	return sys_sync_file_range(fd, offset, nbytes, flags);}