1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 * sys_ppc32.c: Conversion between 32bit and 64bit native syscalls.
  4 *
  5 * Copyright (C) 2001 IBM
  6 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
  7 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
  8 *
  9 * These routines maintain argument size conversion between 32bit and 64bit
 10 * environment.
 11 */
 12
 13#include <linux/kernel.h>
 14#include <linux/sched.h>
 15#include <linux/fs.h> 
 16#include <linux/mm.h> 
 17#include <linux/file.h> 
 18#include <linux/signal.h>
 19#include <linux/resource.h>
 20#include <linux/times.h>
 21#include <linux/smp.h>
 22#include <linux/sem.h>
 23#include <linux/msg.h>
 24#include <linux/shm.h>
 25#include <linux/poll.h>
 26#include <linux/personality.h>
 27#include <linux/stat.h>
 28#include <linux/mman.h>
 29#include <linux/in.h>
 30#include <linux/syscalls.h>
 31#include <linux/unistd.h>
 32#include <linux/sysctl.h>
 33#include <linux/binfmts.h>
 34#include <linux/security.h>
 35#include <linux/compat.h>
 36#include <linux/ptrace.h>
 37#include <linux/elf.h>
 38#include <linux/ipc.h>
 39#include <linux/slab.h>
 40
 41#include <asm/ptrace.h>
 42#include <asm/types.h>
 43#include <linux/uaccess.h>
 44#include <asm/unistd.h>
 45#include <asm/time.h>
 46#include <asm/mmu_context.h>
 47#include <asm/ppc-pci.h>
 48#include <asm/syscalls.h>
 49#include <asm/switch_to.h>
 50
 51unsigned long compat_sys_mmap2(unsigned long addr, size_t len,
 52			  unsigned long prot, unsigned long flags,
 53			  unsigned long fd, unsigned long pgoff)
 54{
 55	/* This should remain 12 even if PAGE_SIZE changes */
 56	return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);
 57}
 58
 59/* 
 60 * long long munging:
 61 * The 32 bit ABI passes long longs in an odd even register pair.
 62 * High and low parts are swapped depending on endian mode,
 63 * so define a macro (similar to mips linux32) to handle that.
 64 */
 65#ifdef __LITTLE_ENDIAN__
 66#define merge_64(low, high) ((u64)high << 32) | low
 67#else
 68#define merge_64(high, low) ((u64)high << 32) | low
 69#endif
 70
 71compat_ssize_t compat_sys_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,
 72			     u32 reg6, u32 pos1, u32 pos2)
 73{
 74	return ksys_pread64(fd, ubuf, count, merge_64(pos1, pos2));
 75}
 76
 77compat_ssize_t compat_sys_pwrite64(unsigned int fd, const char __user *ubuf, compat_size_t count,
 78			      u32 reg6, u32 pos1, u32 pos2)
 79{
 80	return ksys_pwrite64(fd, ubuf, count, merge_64(pos1, pos2));
 81}
 82
 83compat_ssize_t compat_sys_readahead(int fd, u32 r4, u32 offset1, u32 offset2, u32 count)
 84{
 85	return ksys_readahead(fd, merge_64(offset1, offset2), count);
 86}
 87
 88asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4,
 89				unsigned long len1, unsigned long len2)
 90{
 91	return ksys_truncate(path, merge_64(len1, len2));
 92}
 93
 94asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offset1, u32 offset2,
 95				     u32 len1, u32 len2)
 96{
 97	return ksys_fallocate(fd, mode, ((loff_t)offset1 << 32) | offset2,
 98			     merge_64(len1, len2));
 99}
100
101asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long len1,
102				 unsigned long len2)
103{
104	return ksys_ftruncate(fd, merge_64(len1, len2));
105}
106
107long ppc32_fadvise64(int fd, u32 unused, u32 offset1, u32 offset2,
108		     size_t len, int advice)
109{
110	return ksys_fadvise64_64(fd, merge_64(offset1, offset2), len,
111				 advice);
112}
113
114asmlinkage long compat_sys_sync_file_range2(int fd, unsigned int flags,
115				   unsigned offset1, unsigned offset2,
116				   unsigned nbytes1, unsigned nbytes2)
117{
118	loff_t offset = merge_64(offset1, offset2);
119	loff_t nbytes = merge_64(nbytes1, nbytes2);
120
121	return ksys_sync_file_range(fd, offset, nbytes, flags);
122}

  1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 * sys_ppc32.c: Conversion between 32bit and 64bit native syscalls.
  4 *
  5 * Copyright (C) 2001 IBM
  6 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
  7 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
  8 *
  9 * These routines maintain argument size conversion between 32bit and 64bit
 10 * environment.
 11 */
 12
 13#include <linux/kernel.h>
 14#include <linux/sched.h>
 15#include <linux/fs.h> 
 16#include <linux/mm.h> 
 17#include <linux/file.h> 
 18#include <linux/signal.h>
 19#include <linux/resource.h>
 20#include <linux/times.h>
 21#include <linux/smp.h>
 22#include <linux/sem.h>
 23#include <linux/msg.h>
 24#include <linux/shm.h>
 25#include <linux/poll.h>
 26#include <linux/personality.h>
 27#include <linux/stat.h>
 28#include <linux/mman.h>
 29#include <linux/in.h>
 30#include <linux/syscalls.h>
 31#include <linux/unistd.h>
 32#include <linux/sysctl.h>
 33#include <linux/binfmts.h>
 34#include <linux/security.h>
 35#include <linux/compat.h>
 36#include <linux/ptrace.h>
 37#include <linux/elf.h>
 38#include <linux/ipc.h>
 39#include <linux/slab.h>
 40
 41#include <asm/ptrace.h>
 42#include <asm/types.h>
 43#include <linux/uaccess.h>
 44#include <asm/unistd.h>
 45#include <asm/time.h>
 46#include <asm/mmu_context.h>
 47#include <asm/ppc-pci.h>
 48#include <asm/syscalls.h>
 49#include <asm/switch_to.h>
 50
 51unsigned long compat_sys_mmap2(unsigned long addr, size_t len,
 52			  unsigned long prot, unsigned long flags,
 53			  unsigned long fd, unsigned long pgoff)
 54{
 55	/* This should remain 12 even if PAGE_SIZE changes */
 56	return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);
 57}
 58
 59/* 
 60 * long long munging:
 61 * The 32 bit ABI passes long longs in an odd even register pair.
 
 
 62 */
 
 
 
 
 
 63
 64compat_ssize_t compat_sys_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,
 65			     u32 reg6, u32 poshi, u32 poslo)
 66{
 67	return ksys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
 68}
 69
 70compat_ssize_t compat_sys_pwrite64(unsigned int fd, const char __user *ubuf, compat_size_t count,
 71			      u32 reg6, u32 poshi, u32 poslo)
 72{
 73	return ksys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
 74}
 75
 76compat_ssize_t compat_sys_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count)
 77{
 78	return ksys_readahead(fd, ((loff_t)offhi << 32) | offlo, count);
 79}
 80
 81asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4,
 82				unsigned long high, unsigned long low)
 83{
 84	return ksys_truncate(path, (high << 32) | low);
 85}
 86
 87asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
 88				     u32 lenhi, u32 lenlo)
 89{
 90	return ksys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
 91			     ((loff_t)lenhi << 32) | lenlo);
 92}
 93
 94asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long high,
 95				 unsigned long low)
 96{
 97	return ksys_ftruncate(fd, (high << 32) | low);
 98}
 99
100long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
101		     size_t len, int advice)
102{
103	return ksys_fadvise64_64(fd, (u64)offset_high << 32 | offset_low, len,
104				 advice);
105}
106
107asmlinkage long compat_sys_sync_file_range2(int fd, unsigned int flags,
108				   unsigned offset_hi, unsigned offset_lo,
109				   unsigned nbytes_hi, unsigned nbytes_lo)
110{
111	loff_t offset = ((loff_t)offset_hi << 32) | offset_lo;
112	loff_t nbytes = ((loff_t)nbytes_hi << 32) | nbytes_lo;
113
114	return ksys_sync_file_range(fd, offset, nbytes, flags);
115}