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/in.h> 29 #include <linux/syscalls.h> 30 #include <linux/unistd.h> 31 #include <linux/sysctl.h> 32 #include <linux/binfmts.h> 33 #include <linux/security.h> 34 #include <linux/compat.h> 35 #include <linux/ptrace.h> 36 #include <linux/elf.h> 37 #include <linux/ipc.h> 38 #include <linux/slab.h> 39 40 #include <asm/ptrace.h> 41 #include <asm/types.h> 42 #include <linux/uaccess.h> 43 #include <asm/unistd.h> 44 #include <asm/time.h> 45 #include <asm/mmu_context.h> 46 #include <asm/ppc-pci.h> 47 #include <asm/syscalls.h> 48 #include <asm/switch_to.h> 49 50 COMPAT_SYSCALL_DEFINE6(ppc_pread64, 51 unsigned int, fd, 52 char __user *, ubuf, compat_size_t, count, 53 u32, reg6, u32, pos1, u32, pos2) 54 { 55 return ksys_pread64(fd, ubuf, count, merge_64(pos1, pos2)); 56 } 57 58 COMPAT_SYSCALL_DEFINE6(ppc_pwrite64, 59 unsigned int, fd, 60 const char __user *, ubuf, compat_size_t, count, 61 u32, reg6, u32, pos1, u32, pos2) 62 { 63 return ksys_pwrite64(fd, ubuf, count, merge_64(pos1, pos2)); 64 } 65 66 COMPAT_SYSCALL_DEFINE5(ppc_readahead, 67 int, fd, u32, r4, 68 u32, offset1, u32, offset2, u32, count) 69 { 70 return ksys_readahead(fd, merge_64(offset1, offset2), count); 71 } 72 73 COMPAT_SYSCALL_DEFINE4(ppc_truncate64, 74 const char __user *, path, u32, reg4, 75 unsigned long, len1, unsigned long, len2) 76 { 77 return ksys_truncate(path, merge_64(len1, len2)); 78 } 79 80 COMPAT_SYSCALL_DEFINE4(ppc_ftruncate64, 81 unsigned int, fd, u32, reg4, 82 unsigned long, len1, unsigned long, len2) 83 { 84 return ksys_ftruncate(fd, merge_64(len1, len2)); 85 } 86 87 COMPAT_SYSCALL_DEFINE6(ppc32_fadvise64, 88 int, fd, u32, unused, u32, offset1, u32, offset2, 89 size_t, len, int, advice) 90 { 91 return ksys_fadvise64_64(fd, merge_64(offset1, offset2), len, 92 advice); 93 } 94 95 COMPAT_SYSCALL_DEFINE6(ppc_sync_file_range2, 96 int, fd, unsigned int, flags, 97 unsigned int, offset1, unsigned int, offset2, 98 unsigned int, nbytes1, unsigned int, nbytes2) 99 { 100 loff_t offset = merge_64(offset1, offset2); 101 loff_t nbytes = merge_64(nbytes1, nbytes2); 102 103 return ksys_sync_file_range(fd, offset, nbytes, flags); 104 } 105