| /* |
| * Compat system call wrappers |
| * |
| * Copyright (C) 2012 ARM Ltd. |
| * Authors: Will Deacon <will.deacon@arm.com> |
| * Catalin Marinas <catalin.marinas@arm.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include <linux/linkage.h> |
| |
| #include <asm/assembler.h> |
| #include <asm/asm-offsets.h> |
| |
| /* |
| * System call wrappers for the AArch32 compatibility layer. |
| */ |
| compat_sys_fork_wrapper: |
| mov x0, sp |
| b compat_sys_fork |
| ENDPROC(compat_sys_fork_wrapper) |
| |
| compat_sys_vfork_wrapper: |
| mov x0, sp |
| b compat_sys_vfork |
| ENDPROC(compat_sys_vfork_wrapper) |
| |
| compat_sys_execve_wrapper: |
| mov x3, sp |
| b compat_sys_execve |
| ENDPROC(compat_sys_execve_wrapper) |
| |
| compat_sys_clone_wrapper: |
| mov x5, sp |
| b compat_sys_clone |
| ENDPROC(compat_sys_clone_wrapper) |
| |
| compat_sys_sigreturn_wrapper: |
| mov x0, sp |
| mov x27, #0 // prevent syscall restart handling (why) |
| b compat_sys_sigreturn |
| ENDPROC(compat_sys_sigreturn_wrapper) |
| |
| compat_sys_rt_sigreturn_wrapper: |
| mov x0, sp |
| mov x27, #0 // prevent syscall restart handling (why) |
| b compat_sys_rt_sigreturn |
| ENDPROC(compat_sys_rt_sigreturn_wrapper) |
| |
| compat_sys_sigaltstack_wrapper: |
| ldr x2, [sp, #S_COMPAT_SP] |
| b compat_do_sigaltstack |
| ENDPROC(compat_sys_sigaltstack_wrapper) |
| |
| compat_sys_statfs64_wrapper: |
| mov w3, #84 |
| cmp w1, #88 |
| csel w1, w3, w1, eq |
| b compat_sys_statfs64 |
| ENDPROC(compat_sys_statfs64_wrapper) |
| |
| compat_sys_fstatfs64_wrapper: |
| mov w3, #84 |
| cmp w1, #88 |
| csel w1, w3, w1, eq |
| b compat_sys_fstatfs64 |
| ENDPROC(compat_sys_fstatfs64_wrapper) |
| |
| /* |
| * Wrappers for AArch32 syscalls that either take 64-bit parameters |
| * in registers or that take 32-bit parameters which require sign |
| * extension. |
| */ |
| compat_sys_lseek_wrapper: |
| sxtw x1, w1 |
| b sys_lseek |
| ENDPROC(compat_sys_lseek_wrapper) |
| |
| compat_sys_pread64_wrapper: |
| orr x3, x4, x5, lsl #32 |
| b sys_pread64 |
| ENDPROC(compat_sys_pread64_wrapper) |
| |
| compat_sys_pwrite64_wrapper: |
| orr x3, x4, x5, lsl #32 |
| b sys_pwrite64 |
| ENDPROC(compat_sys_pwrite64_wrapper) |
| |
| compat_sys_truncate64_wrapper: |
| orr x1, x2, x3, lsl #32 |
| b sys_truncate |
| ENDPROC(compat_sys_truncate64_wrapper) |
| |
| compat_sys_ftruncate64_wrapper: |
| orr x1, x2, x3, lsl #32 |
| b sys_ftruncate |
| ENDPROC(compat_sys_ftruncate64_wrapper) |
| |
| compat_sys_readahead_wrapper: |
| orr x1, x2, x3, lsl #32 |
| mov w2, w4 |
| b sys_readahead |
| ENDPROC(compat_sys_readahead_wrapper) |
| |
| compat_sys_lookup_dcookie: |
| orr x0, x0, x1, lsl #32 |
| mov w1, w2 |
| mov w2, w3 |
| b sys_lookup_dcookie |
| ENDPROC(compat_sys_lookup_dcookie) |
| |
| compat_sys_fadvise64_64_wrapper: |
| mov w6, w1 |
| orr x1, x2, x3, lsl #32 |
| orr x2, x4, x5, lsl #32 |
| mov w3, w6 |
| b sys_fadvise64_64 |
| ENDPROC(compat_sys_fadvise64_64_wrapper) |
| |
| compat_sys_sync_file_range2_wrapper: |
| orr x2, x2, x3, lsl #32 |
| orr x3, x4, x5, lsl #32 |
| b sys_sync_file_range2 |
| ENDPROC(compat_sys_sync_file_range2_wrapper) |
| |
| compat_sys_fallocate_wrapper: |
| orr x2, x2, x3, lsl #32 |
| orr x3, x4, x5, lsl #32 |
| b sys_fallocate |
| ENDPROC(compat_sys_fallocate_wrapper) |
| |
| compat_sys_fanotify_mark_wrapper: |
| orr x2, x2, x3, lsl #32 |
| mov w3, w4 |
| mov w4, w5 |
| b sys_fanotify_mark |
| ENDPROC(compat_sys_fanotify_mark_wrapper) |
| |
| /* |
| * Use the compat system call wrappers. |
| */ |
| #define sys_fork compat_sys_fork_wrapper |
| #define sys_open compat_sys_open |
| #define sys_execve compat_sys_execve_wrapper |
| #define sys_lseek compat_sys_lseek_wrapper |
| #define sys_mount compat_sys_mount |
| #define sys_ptrace compat_sys_ptrace |
| #define sys_times compat_sys_times |
| #define sys_ioctl compat_sys_ioctl |
| #define sys_fcntl compat_sys_fcntl |
| #define sys_ustat compat_sys_ustat |
| #define sys_sigaction compat_sys_sigaction |
| #define sys_sigsuspend compat_sys_sigsuspend |
| #define sys_sigpending compat_sys_sigpending |
| #define sys_setrlimit compat_sys_setrlimit |
| #define sys_getrusage compat_sys_getrusage |
| #define sys_gettimeofday compat_sys_gettimeofday |
| #define sys_settimeofday compat_sys_settimeofday |
| #define sys_statfs compat_sys_statfs |
| #define sys_fstatfs compat_sys_fstatfs |
| #define sys_setitimer compat_sys_setitimer |
| #define sys_getitimer compat_sys_getitimer |
| #define sys_newstat compat_sys_newstat |
| #define sys_newlstat compat_sys_newlstat |
| #define sys_newfstat compat_sys_newfstat |
| #define sys_wait4 compat_sys_wait4 |
| #define sys_sysinfo compat_sys_sysinfo |
| #define sys_sigreturn compat_sys_sigreturn_wrapper |
| #define sys_clone compat_sys_clone_wrapper |
| #define sys_adjtimex compat_sys_adjtimex |
| #define sys_sigprocmask compat_sys_sigprocmask |
| #define sys_getdents compat_sys_getdents |
| #define sys_select compat_sys_select |
| #define sys_readv compat_sys_readv |
| #define sys_writev compat_sys_writev |
| #define sys_sysctl compat_sys_sysctl |
| #define sys_sched_rr_get_interval compat_sys_sched_rr_get_interval |
| #define sys_nanosleep compat_sys_nanosleep |
| #define sys_rt_sigreturn compat_sys_rt_sigreturn_wrapper |
| #define sys_rt_sigaction compat_sys_rt_sigaction |
| #define sys_rt_sigprocmask compat_sys_rt_sigprocmask |
| #define sys_rt_sigpending compat_sys_rt_sigpending |
| #define sys_rt_sigtimedwait compat_sys_rt_sigtimedwait |
| #define sys_rt_sigqueueinfo compat_sys_rt_sigqueueinfo |
| #define sys_rt_sigsuspend compat_sys_rt_sigsuspend |
| #define sys_pread64 compat_sys_pread64_wrapper |
| #define sys_pwrite64 compat_sys_pwrite64_wrapper |
| #define sys_sigaltstack compat_sys_sigaltstack_wrapper |
| #define sys_sendfile compat_sys_sendfile |
| #define sys_vfork compat_sys_vfork_wrapper |
| #define sys_getrlimit compat_sys_getrlimit |
| #define sys_mmap2 sys_mmap_pgoff |
| #define sys_truncate64 compat_sys_truncate64_wrapper |
| #define sys_ftruncate64 compat_sys_ftruncate64_wrapper |
| #define sys_getdents64 compat_sys_getdents64 |
| #define sys_fcntl64 compat_sys_fcntl64 |
| #define sys_readahead compat_sys_readahead_wrapper |
| #define sys_futex compat_sys_futex |
| #define sys_sched_setaffinity compat_sys_sched_setaffinity |
| #define sys_sched_getaffinity compat_sys_sched_getaffinity |
| #define sys_io_setup compat_sys_io_setup |
| #define sys_io_getevents compat_sys_io_getevents |
| #define sys_io_submit compat_sys_io_submit |
| #define sys_lookup_dcookie compat_sys_lookup_dcookie |
| #define sys_timer_create compat_sys_timer_create |
| #define sys_timer_settime compat_sys_timer_settime |
| #define sys_timer_gettime compat_sys_timer_gettime |
| #define sys_clock_settime compat_sys_clock_settime |
| #define sys_clock_gettime compat_sys_clock_gettime |
| #define sys_clock_getres compat_sys_clock_getres |
| #define sys_clock_nanosleep compat_sys_clock_nanosleep |
| #define sys_statfs64 compat_sys_statfs64_wrapper |
| #define sys_fstatfs64 compat_sys_fstatfs64_wrapper |
| #define sys_utimes compat_sys_utimes |
| #define sys_fadvise64_64 compat_sys_fadvise64_64_wrapper |
| #define sys_mq_open compat_sys_mq_open |
| #define sys_mq_timedsend compat_sys_mq_timedsend |
| #define sys_mq_timedreceive compat_sys_mq_timedreceive |
| #define sys_mq_notify compat_sys_mq_notify |
| #define sys_mq_getsetattr compat_sys_mq_getsetattr |
| #define sys_waitid compat_sys_waitid |
| #define sys_recv compat_sys_recv |
| #define sys_recvfrom compat_sys_recvfrom |
| #define sys_setsockopt compat_sys_setsockopt |
| #define sys_getsockopt compat_sys_getsockopt |
| #define sys_sendmsg compat_sys_sendmsg |
| #define sys_recvmsg compat_sys_recvmsg |
| #define sys_semctl compat_sys_semctl |
| #define sys_msgsnd compat_sys_msgsnd |
| #define sys_msgrcv compat_sys_msgrcv |
| #define sys_msgctl compat_sys_msgctl |
| #define sys_shmat compat_sys_shmat |
| #define sys_shmctl compat_sys_shmctl |
| #define sys_keyctl compat_sys_keyctl |
| #define sys_semtimedop compat_sys_semtimedop |
| #define sys_mbind compat_sys_mbind |
| #define sys_get_mempolicy compat_sys_get_mempolicy |
| #define sys_set_mempolicy compat_sys_set_mempolicy |
| #define sys_openat compat_sys_openat |
| #define sys_futimesat compat_sys_futimesat |
| #define sys_pselect6 compat_sys_pselect6 |
| #define sys_ppoll compat_sys_ppoll |
| #define sys_set_robust_list compat_sys_set_robust_list |
| #define sys_get_robust_list compat_sys_get_robust_list |
| #define sys_sync_file_range2 compat_sys_sync_file_range2_wrapper |
| #define sys_vmsplice compat_sys_vmsplice |
| #define sys_move_pages compat_sys_move_pages |
| #define sys_epoll_pwait compat_sys_epoll_pwait |
| #define sys_kexec_load compat_sys_kexec_load |
| #define sys_utimensat compat_sys_utimensat |
| #define sys_signalfd compat_sys_signalfd |
| #define sys_fallocate compat_sys_fallocate_wrapper |
| #define sys_timerfd_settime compat_sys_timerfd_settime |
| #define sys_timerfd_gettime compat_sys_timerfd_gettime |
| #define sys_signalfd4 compat_sys_signalfd4 |
| #define sys_preadv compat_sys_preadv |
| #define sys_pwritev compat_sys_pwritev |
| #define sys_rt_tgsigqueueinfo compat_sys_rt_tgsigqueueinfo |
| #define sys_recvmmsg compat_sys_recvmmsg |
| #define sys_fanotify_mark compat_sys_fanotify_mark_wrapper |
| |
| #undef __SYSCALL |
| #define __SYSCALL(x, y) .quad y // x |
| #define __SYSCALL_COMPAT |
| |
| /* |
| * The system calls table must be 4KB aligned. |
| */ |
| .align 12 |
| ENTRY(compat_sys_call_table) |
| #include <asm/unistd.h> |