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122 lines
3.4 KiB
122 lines
3.4 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* sys_ppc32.c: Conversion between 32bit and 64bit native syscalls. |
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* |
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* Copyright (C) 2001 IBM |
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* Copyright (C) 1997,1998 Jakub Jelinek ([email protected]) |
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* Copyright (C) 1997 David S. Miller ([email protected]) |
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* |
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* These routines maintain argument size conversion between 32bit and 64bit |
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* environment. |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/sched.h> |
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#include <linux/fs.h> |
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#include <linux/mm.h> |
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#include <linux/file.h> |
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#include <linux/signal.h> |
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#include <linux/resource.h> |
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#include <linux/times.h> |
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#include <linux/smp.h> |
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#include <linux/sem.h> |
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#include <linux/msg.h> |
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#include <linux/shm.h> |
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#include <linux/poll.h> |
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#include <linux/personality.h> |
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#include <linux/stat.h> |
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#include <linux/mman.h> |
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#include <linux/in.h> |
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#include <linux/syscalls.h> |
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#include <linux/unistd.h> |
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#include <linux/sysctl.h> |
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#include <linux/binfmts.h> |
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#include <linux/security.h> |
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#include <linux/compat.h> |
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#include <linux/ptrace.h> |
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#include <linux/elf.h> |
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#include <linux/ipc.h> |
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#include <linux/slab.h> |
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#include <asm/ptrace.h> |
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#include <asm/types.h> |
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#include <linux/uaccess.h> |
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#include <asm/unistd.h> |
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#include <asm/time.h> |
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#include <asm/mmu_context.h> |
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#include <asm/ppc-pci.h> |
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#include <asm/syscalls.h> |
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#include <asm/switch_to.h> |
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unsigned long compat_sys_mmap2(unsigned long addr, size_t len, |
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unsigned long prot, unsigned long flags, |
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unsigned long fd, unsigned long pgoff) |
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{ |
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/* This should remain 12 even if PAGE_SIZE changes */ |
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return sys_mmap(addr, len, prot, flags, fd, pgoff << 12); |
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} |
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/* |
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* long long munging: |
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* The 32 bit ABI passes long longs in an odd even register pair. |
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* High and low parts are swapped depending on endian mode, |
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* so define a macro (similar to mips linux32) to handle that. |
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*/ |
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#ifdef __LITTLE_ENDIAN__ |
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#define merge_64(low, high) ((u64)high << 32) | low |
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#else |
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#define merge_64(high, low) ((u64)high << 32) | low |
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#endif |
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compat_ssize_t compat_sys_pread64(unsigned int fd, char __user *ubuf, compat_size_t count, |
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u32 reg6, u32 pos1, u32 pos2) |
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{ |
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return ksys_pread64(fd, ubuf, count, merge_64(pos1, pos2)); |
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} |
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compat_ssize_t compat_sys_pwrite64(unsigned int fd, const char __user *ubuf, compat_size_t count, |
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u32 reg6, u32 pos1, u32 pos2) |
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{ |
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return ksys_pwrite64(fd, ubuf, count, merge_64(pos1, pos2)); |
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} |
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compat_ssize_t compat_sys_readahead(int fd, u32 r4, u32 offset1, u32 offset2, u32 count) |
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{ |
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return ksys_readahead(fd, merge_64(offset1, offset2), count); |
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} |
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asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4, |
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unsigned long len1, unsigned long len2) |
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{ |
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return ksys_truncate(path, merge_64(len1, len2)); |
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} |
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asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offset1, u32 offset2, |
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u32 len1, u32 len2) |
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{ |
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return ksys_fallocate(fd, mode, ((loff_t)offset1 << 32) | offset2, |
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merge_64(len1, len2)); |
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} |
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asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long len1, |
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unsigned long len2) |
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{ |
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return ksys_ftruncate(fd, merge_64(len1, len2)); |
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} |
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long ppc32_fadvise64(int fd, u32 unused, u32 offset1, u32 offset2, |
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size_t len, int advice) |
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{ |
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return ksys_fadvise64_64(fd, merge_64(offset1, offset2), len, |
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advice); |
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} |
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asmlinkage long compat_sys_sync_file_range2(int fd, unsigned int flags, |
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unsigned offset1, unsigned offset2, |
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unsigned nbytes1, unsigned nbytes2) |
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{ |
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loff_t offset = merge_64(offset1, offset2); |
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loff_t nbytes = merge_64(nbytes1, nbytes2); |
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return ksys_sync_file_range(fd, offset, nbytes, flags); |
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}
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