/* * Compat system call wrappers * * Copyright (C) 2012 ARM Ltd. * Authors: Will Deacon * Catalin Marinas * * 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 . */ #include #include #include /* * 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