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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /arch/mips/kernel/linux32.c | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/mips/kernel/linux32.c')
-rw-r--r-- | arch/mips/kernel/linux32.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c new file mode 100644 index 000000000..6b61be486 --- /dev/null +++ b/arch/mips/kernel/linux32.c @@ -0,0 +1,133 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Conversion between 32-bit and 64-bit native system calls. + * + * Copyright (C) 2000 Silicon Graphics, Inc. + * Written by Ulf Carlsson (ulfc@engr.sgi.com) + */ +#include <linux/compiler.h> +#include <linux/mm.h> +#include <linux/errno.h> +#include <linux/file.h> +#include <linux/highuid.h> +#include <linux/resource.h> +#include <linux/highmem.h> +#include <linux/time.h> +#include <linux/times.h> +#include <linux/poll.h> +#include <linux/skbuff.h> +#include <linux/filter.h> +#include <linux/shm.h> +#include <linux/sem.h> +#include <linux/msg.h> +#include <linux/icmpv6.h> +#include <linux/syscalls.h> +#include <linux/sysctl.h> +#include <linux/utime.h> +#include <linux/utsname.h> +#include <linux/personality.h> +#include <linux/dnotify.h> +#include <linux/binfmts.h> +#include <linux/security.h> +#include <linux/compat.h> +#include <linux/vfs.h> +#include <linux/ipc.h> +#include <linux/slab.h> + +#include <net/sock.h> +#include <net/scm.h> + +#include <asm/compat-signal.h> +#include <asm/sim.h> +#include <linux/uaccess.h> +#include <asm/mmu_context.h> +#include <asm/mman.h> + +#ifdef __MIPSEB__ +#define merge_64(r1, r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL)) +#endif +#ifdef __MIPSEL__ +#define merge_64(r1, r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL)) +#endif + +SYSCALL_DEFINE4(32_truncate64, const char __user *, path, + unsigned long, __dummy, unsigned long, a2, unsigned long, a3) +{ + return ksys_truncate(path, merge_64(a2, a3)); +} + +SYSCALL_DEFINE4(32_ftruncate64, unsigned long, fd, unsigned long, __dummy, + unsigned long, a2, unsigned long, a3) +{ + return ksys_ftruncate(fd, merge_64(a2, a3)); +} + +SYSCALL_DEFINE5(32_llseek, unsigned int, fd, unsigned int, offset_high, + unsigned int, offset_low, loff_t __user *, result, + unsigned int, origin) +{ + return sys_llseek(fd, offset_high, offset_low, result, origin); +} + +/* From the Single Unix Spec: pread & pwrite act like lseek to pos + op + + lseek back to original location. They fail just like lseek does on + non-seekable files. */ + +SYSCALL_DEFINE6(32_pread, unsigned long, fd, char __user *, buf, size_t, count, + unsigned long, unused, unsigned long, a4, unsigned long, a5) +{ + return ksys_pread64(fd, buf, count, merge_64(a4, a5)); +} + +SYSCALL_DEFINE6(32_pwrite, unsigned int, fd, const char __user *, buf, + size_t, count, u32, unused, u64, a4, u64, a5) +{ + return ksys_pwrite64(fd, buf, count, merge_64(a4, a5)); +} + +SYSCALL_DEFINE1(32_personality, unsigned long, personality) +{ + unsigned int p = personality & 0xffffffff; + int ret; + + if (personality(current->personality) == PER_LINUX32 && + personality(p) == PER_LINUX) + p = (p & ~PER_MASK) | PER_LINUX32; + ret = sys_personality(p); + if (ret != -1 && personality(ret) == PER_LINUX32) + ret = (ret & ~PER_MASK) | PER_LINUX; + return ret; +} + +asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3, + size_t count) +{ + return ksys_readahead(fd, merge_64(a2, a3), count); +} + +asmlinkage long sys32_sync_file_range(int fd, int __pad, + unsigned long a2, unsigned long a3, + unsigned long a4, unsigned long a5, + int flags) +{ + return ksys_sync_file_range(fd, + merge_64(a2, a3), merge_64(a4, a5), + flags); +} + +asmlinkage long sys32_fadvise64_64(int fd, int __pad, + unsigned long a2, unsigned long a3, + unsigned long a4, unsigned long a5, + int flags) +{ + return ksys_fadvise64_64(fd, + merge_64(a2, a3), merge_64(a4, a5), + flags); +} + +asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2, + unsigned offset_a3, unsigned len_a4, unsigned len_a5) +{ + return ksys_fallocate(fd, mode, merge_64(offset_a2, offset_a3), + merge_64(len_a4, len_a5)); +} |