forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
135 lines
3.8 KiB
135 lines
3.8 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
|
/* |
|
* sys_ppc32.c: 32-bit system calls with complex calling conventions. |
|
* |
|
* Copyright (C) 2001 IBM |
|
* Copyright (C) 1997,1998 Jakub Jelinek ([email protected]) |
|
* Copyright (C) 1997 David S. Miller ([email protected]) |
|
* |
|
* 32-bit system calls with 64-bit arguments pass those in register pairs. |
|
* This must be specially dealt with on 64-bit kernels. The compat_arg_u64_dual |
|
* in generic compat syscalls is not always usable because the register |
|
* pairing is constrained depending on preceding arguments. |
|
* |
|
* An analogous problem exists on 32-bit kernels with ARCH_HAS_SYSCALL_WRAPPER, |
|
* the defined system call functions take the pt_regs as an argument, and there |
|
* is a mapping macro which maps registers to arguments |
|
* (SC_POWERPC_REGS_TO_ARGS) which also does not deal with these 64-bit |
|
* arguments. |
|
* |
|
* This file contains these system calls. |
|
*/ |
|
|
|
#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/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 <linux/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> |
|
|
|
#ifdef CONFIG_PPC32 |
|
#define PPC32_SYSCALL_DEFINE4 SYSCALL_DEFINE4 |
|
#define PPC32_SYSCALL_DEFINE5 SYSCALL_DEFINE5 |
|
#define PPC32_SYSCALL_DEFINE6 SYSCALL_DEFINE6 |
|
#else |
|
#define PPC32_SYSCALL_DEFINE4 COMPAT_SYSCALL_DEFINE4 |
|
#define PPC32_SYSCALL_DEFINE5 COMPAT_SYSCALL_DEFINE5 |
|
#define PPC32_SYSCALL_DEFINE6 COMPAT_SYSCALL_DEFINE6 |
|
#endif |
|
|
|
PPC32_SYSCALL_DEFINE6(ppc_pread64, |
|
unsigned int, fd, |
|
char __user *, ubuf, compat_size_t, count, |
|
u32, reg6, u32, pos1, u32, pos2) |
|
{ |
|
return ksys_pread64(fd, ubuf, count, merge_64(pos1, pos2)); |
|
} |
|
|
|
PPC32_SYSCALL_DEFINE6(ppc_pwrite64, |
|
unsigned int, fd, |
|
const char __user *, ubuf, compat_size_t, count, |
|
u32, reg6, u32, pos1, u32, pos2) |
|
{ |
|
return ksys_pwrite64(fd, ubuf, count, merge_64(pos1, pos2)); |
|
} |
|
|
|
PPC32_SYSCALL_DEFINE5(ppc_readahead, |
|
int, fd, u32, r4, |
|
u32, offset1, u32, offset2, u32, count) |
|
{ |
|
return ksys_readahead(fd, merge_64(offset1, offset2), count); |
|
} |
|
|
|
PPC32_SYSCALL_DEFINE4(ppc_truncate64, |
|
const char __user *, path, u32, reg4, |
|
unsigned long, len1, unsigned long, len2) |
|
{ |
|
return ksys_truncate(path, merge_64(len1, len2)); |
|
} |
|
|
|
PPC32_SYSCALL_DEFINE4(ppc_ftruncate64, |
|
unsigned int, fd, u32, reg4, |
|
unsigned long, len1, unsigned long, len2) |
|
{ |
|
return ksys_ftruncate(fd, merge_64(len1, len2)); |
|
} |
|
|
|
PPC32_SYSCALL_DEFINE6(ppc32_fadvise64, |
|
int, fd, u32, unused, u32, offset1, u32, offset2, |
|
size_t, len, int, advice) |
|
{ |
|
return ksys_fadvise64_64(fd, merge_64(offset1, offset2), len, |
|
advice); |
|
} |
|
|
|
PPC32_SYSCALL_DEFINE6(ppc_sync_file_range2, |
|
int, fd, unsigned int, flags, |
|
unsigned int, offset1, unsigned int, offset2, |
|
unsigned int, nbytes1, unsigned int, nbytes2) |
|
{ |
|
loff_t offset = merge_64(offset1, offset2); |
|
loff_t nbytes = merge_64(nbytes1, nbytes2); |
|
|
|
return ksys_sync_file_range(fd, offset, nbytes, flags); |
|
} |
|
|
|
#ifdef CONFIG_PPC32 |
|
SYSCALL_DEFINE6(ppc_fallocate, |
|
int, fd, int, mode, |
|
u32, offset1, u32, offset2, u32, len1, u32, len2) |
|
{ |
|
return ksys_fallocate(fd, mode, |
|
merge_64(offset1, offset2), |
|
merge_64(len1, len2)); |
|
} |
|
#endif
|
|
|