diff options
Diffstat (limited to 'arch/mips/kernel/scall64-n32.S')
| -rw-r--r-- | arch/mips/kernel/scall64-n32.S | 432 |
1 files changed, 432 insertions, 0 deletions
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S new file mode 100644 index 000000000..446cc654d --- /dev/null +++ b/arch/mips/kernel/scall64-n32.S @@ -0,0 +1,432 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1995, 96, 97, 98, 99, 2000, 01 by Ralf Baechle + * Copyright (C) 1999, 2000 Silicon Graphics, Inc. + * Copyright (C) 2001 MIPS Technologies, Inc. + */ +#include <linux/errno.h> +#include <asm/asm.h> +#include <asm/asmmacro.h> +#include <asm/irqflags.h> +#include <asm/mipsregs.h> +#include <asm/regdef.h> +#include <asm/stackframe.h> +#include <asm/thread_info.h> +#include <asm/unistd.h> + +#ifndef CONFIG_MIPS32_O32 +/* No O32, so define handle_sys here */ +#define handle_sysn32 handle_sys +#endif + + .align 5 +NESTED(handle_sysn32, PT_SIZE, sp) +#ifndef CONFIG_MIPS32_O32 + .set noat + SAVE_SOME + TRACE_IRQS_ON_RELOAD + STI + .set at +#endif + + dsubu t0, v0, __NR_N32_Linux # check syscall number + sltiu t0, t0, __NR_N32_Linux_syscalls + 1 + +#ifndef CONFIG_MIPS32_O32 + ld t1, PT_EPC(sp) # skip syscall on return + daddiu t1, 4 # skip to next instruction + sd t1, PT_EPC(sp) +#endif + beqz t0, not_n32_scall + + dsll t0, v0, 3 # offset into table + ld t2, (sysn32_call_table - (__NR_N32_Linux * 8))(t0) + + sd a3, PT_R26(sp) # save a3 for syscall restarting + + li t1, _TIF_WORK_SYSCALL_ENTRY + LONG_L t0, TI_FLAGS($28) # syscall tracing enabled? + and t0, t1, t0 + bnez t0, n32_syscall_trace_entry + + jalr t2 # Do The Real Thing (TM) + + li t0, -EMAXERRNO - 1 # error? + sltu t0, t0, v0 + sd t0, PT_R7(sp) # set error flag + beqz t0, 1f + + ld t1, PT_R2(sp) # syscall number + dnegu v0 # error + sd t1, PT_R0(sp) # save it for syscall restarting +1: sd v0, PT_R2(sp) # result + + j syscall_exit_partial + +/* ------------------------------------------------------------------------ */ + +n32_syscall_trace_entry: + SAVE_STATIC + move s0, t2 + move a0, sp + daddiu a1, v0, __NR_N32_Linux + jal syscall_trace_enter + + bltz v0, 2f # seccomp failed? Skip syscall + + move t0, s0 + RESTORE_STATIC + ld a0, PT_R4(sp) # Restore argument registers + ld a1, PT_R5(sp) + ld a2, PT_R6(sp) + ld a3, PT_R7(sp) + ld a4, PT_R8(sp) + ld a5, PT_R9(sp) + jalr t0 + + li t0, -EMAXERRNO - 1 # error? + sltu t0, t0, v0 + sd t0, PT_R7(sp) # set error flag + beqz t0, 1f + + ld t1, PT_R2(sp) # syscall number + dnegu v0 # error + sd t1, PT_R0(sp) # save it for syscall restarting +1: sd v0, PT_R2(sp) # result + +2: j syscall_exit + +not_n32_scall: + /* This is not an n32 compatibility syscall, pass it on to + the n64 syscall handlers. */ + j handle_sys64 + + END(handle_sysn32) + + .type sysn32_call_table, @object +EXPORT(sysn32_call_table) + PTR sys_read /* 6000 */ + PTR sys_write + PTR sys_open + PTR sys_close + PTR sys_newstat + PTR sys_newfstat /* 6005 */ + PTR sys_newlstat + PTR sys_poll + PTR sys_lseek + PTR sys_mips_mmap + PTR sys_mprotect /* 6010 */ + PTR sys_munmap + PTR sys_brk + PTR compat_sys_rt_sigaction + PTR compat_sys_rt_sigprocmask + PTR compat_sys_ioctl /* 6015 */ + PTR sys_pread64 + PTR sys_pwrite64 + PTR compat_sys_readv + PTR compat_sys_writev + PTR sys_access /* 6020 */ + PTR sysm_pipe + PTR compat_sys_select + PTR sys_sched_yield + PTR sys_mremap + PTR sys_msync /* 6025 */ + PTR sys_mincore + PTR sys_madvise + PTR sys_shmget + PTR sys_shmat + PTR compat_sys_shmctl /* 6030 */ + PTR sys_dup + PTR sys_dup2 + PTR sys_pause + PTR compat_sys_nanosleep + PTR compat_sys_getitimer /* 6035 */ + PTR compat_sys_setitimer + PTR sys_alarm + PTR sys_getpid + PTR compat_sys_sendfile + PTR sys_socket /* 6040 */ + PTR sys_connect + PTR sys_accept + PTR sys_sendto + PTR compat_sys_recvfrom + PTR compat_sys_sendmsg /* 6045 */ + PTR compat_sys_recvmsg + PTR sys_shutdown + PTR sys_bind + PTR sys_listen + PTR sys_getsockname /* 6050 */ + PTR sys_getpeername + PTR sys_socketpair + PTR compat_sys_setsockopt + PTR compat_sys_getsockopt + PTR __sys_clone /* 6055 */ + PTR __sys_fork + PTR compat_sys_execve + PTR sys_exit + PTR compat_sys_wait4 + PTR sys_kill /* 6060 */ + PTR sys_newuname + PTR sys_semget + PTR sys_semop + PTR compat_sys_semctl + PTR sys_shmdt /* 6065 */ + PTR sys_msgget + PTR compat_sys_msgsnd + PTR compat_sys_msgrcv + PTR compat_sys_msgctl + PTR compat_sys_fcntl /* 6070 */ + PTR sys_flock + PTR sys_fsync + PTR sys_fdatasync + PTR sys_truncate + PTR sys_ftruncate /* 6075 */ + PTR compat_sys_getdents + PTR sys_getcwd + PTR sys_chdir + PTR sys_fchdir + PTR sys_rename /* 6080 */ + PTR sys_mkdir + PTR sys_rmdir + PTR sys_creat + PTR sys_link + PTR sys_unlink /* 6085 */ + PTR sys_symlink + PTR sys_readlink + PTR sys_chmod + PTR sys_fchmod + PTR sys_chown /* 6090 */ + PTR sys_fchown + PTR sys_lchown + PTR sys_umask + PTR compat_sys_gettimeofday + PTR compat_sys_getrlimit /* 6095 */ + PTR compat_sys_getrusage + PTR compat_sys_sysinfo + PTR compat_sys_times + PTR compat_sys_ptrace + PTR sys_getuid /* 6100 */ + PTR sys_syslog + PTR sys_getgid + PTR sys_setuid + PTR sys_setgid + PTR sys_geteuid /* 6105 */ + PTR sys_getegid + PTR sys_setpgid + PTR sys_getppid + PTR sys_getpgrp + PTR sys_setsid /* 6110 */ + PTR sys_setreuid + PTR sys_setregid + PTR sys_getgroups + PTR sys_setgroups + PTR sys_setresuid /* 6115 */ + PTR sys_getresuid + PTR sys_setresgid + PTR sys_getresgid + PTR sys_getpgid + PTR sys_setfsuid /* 6120 */ + PTR sys_setfsgid + PTR sys_getsid + PTR sys_capget + PTR sys_capset + PTR compat_sys_rt_sigpending /* 6125 */ + PTR compat_sys_rt_sigtimedwait + PTR compat_sys_rt_sigqueueinfo + PTR compat_sys_rt_sigsuspend + PTR compat_sys_sigaltstack + PTR compat_sys_utime /* 6130 */ + PTR sys_mknod + PTR sys_32_personality + PTR compat_sys_ustat + PTR compat_sys_statfs + PTR compat_sys_fstatfs /* 6135 */ + PTR sys_sysfs + PTR sys_getpriority + PTR sys_setpriority + PTR sys_sched_setparam + PTR sys_sched_getparam /* 6140 */ + PTR sys_sched_setscheduler + PTR sys_sched_getscheduler + PTR sys_sched_get_priority_max + PTR sys_sched_get_priority_min + PTR compat_sys_sched_rr_get_interval /* 6145 */ + PTR sys_mlock + PTR sys_munlock + PTR sys_mlockall + PTR sys_munlockall + PTR sys_vhangup /* 6150 */ + PTR sys_pivot_root + PTR compat_sys_sysctl + PTR sys_prctl + PTR compat_sys_adjtimex + PTR compat_sys_setrlimit /* 6155 */ + PTR sys_chroot + PTR sys_sync + PTR sys_acct + PTR compat_sys_settimeofday + PTR compat_sys_mount /* 6160 */ + PTR sys_umount + PTR sys_swapon + PTR sys_swapoff + PTR sys_reboot + PTR sys_sethostname /* 6165 */ + PTR sys_setdomainname + PTR sys_ni_syscall /* was create_module */ + PTR sys_init_module + PTR sys_delete_module + PTR sys_ni_syscall /* 6170, was get_kernel_syms */ + PTR sys_ni_syscall /* was query_module */ + PTR sys_quotactl + PTR sys_ni_syscall /* was nfsservctl */ + PTR sys_ni_syscall /* res. for getpmsg */ + PTR sys_ni_syscall /* 6175 for putpmsg */ + PTR sys_ni_syscall /* res. for afs_syscall */ + PTR sys_ni_syscall /* res. for security */ + PTR sys_gettid + PTR sys_readahead + PTR sys_setxattr /* 6180 */ + PTR sys_lsetxattr + PTR sys_fsetxattr + PTR sys_getxattr + PTR sys_lgetxattr + PTR sys_fgetxattr /* 6185 */ + PTR sys_listxattr + PTR sys_llistxattr + PTR sys_flistxattr + PTR sys_removexattr + PTR sys_lremovexattr /* 6190 */ + PTR sys_fremovexattr + PTR sys_tkill + PTR sys_ni_syscall + PTR compat_sys_futex + PTR compat_sys_sched_setaffinity /* 6195 */ + PTR compat_sys_sched_getaffinity + PTR sys_cacheflush + PTR sys_cachectl + PTR sys_sysmips + PTR compat_sys_io_setup /* 6200 */ + PTR sys_io_destroy + PTR compat_sys_io_getevents + PTR compat_sys_io_submit + PTR sys_io_cancel + PTR sys_exit_group /* 6205 */ + PTR sys_lookup_dcookie + PTR sys_epoll_create + PTR sys_epoll_ctl + PTR sys_epoll_wait + PTR sys_remap_file_pages /* 6210 */ + PTR sysn32_rt_sigreturn + PTR compat_sys_fcntl64 + PTR sys_set_tid_address + PTR sys_restart_syscall + PTR compat_sys_semtimedop /* 6215 */ + PTR sys_fadvise64_64 + PTR compat_sys_statfs64 + PTR compat_sys_fstatfs64 + PTR sys_sendfile64 + PTR compat_sys_timer_create /* 6220 */ + PTR compat_sys_timer_settime + PTR compat_sys_timer_gettime + PTR sys_timer_getoverrun + PTR sys_timer_delete + PTR compat_sys_clock_settime /* 6225 */ + PTR compat_sys_clock_gettime + PTR compat_sys_clock_getres + PTR compat_sys_clock_nanosleep + PTR sys_tgkill + PTR compat_sys_utimes /* 6230 */ + PTR compat_sys_mbind + PTR compat_sys_get_mempolicy + PTR compat_sys_set_mempolicy + PTR compat_sys_mq_open + PTR sys_mq_unlink /* 6235 */ + PTR compat_sys_mq_timedsend + PTR compat_sys_mq_timedreceive + PTR compat_sys_mq_notify + PTR compat_sys_mq_getsetattr + PTR sys_ni_syscall /* 6240, sys_vserver */ + PTR compat_sys_waitid + PTR sys_ni_syscall /* available, was setaltroot */ + PTR sys_add_key + PTR sys_request_key + PTR sys_keyctl /* 6245 */ + PTR sys_set_thread_area + PTR sys_inotify_init + PTR sys_inotify_add_watch + PTR sys_inotify_rm_watch + PTR compat_sys_migrate_pages /* 6250 */ + PTR sys_openat + PTR sys_mkdirat + PTR sys_mknodat + PTR sys_fchownat + PTR compat_sys_futimesat /* 6255 */ + PTR sys_newfstatat + PTR sys_unlinkat + PTR sys_renameat + PTR sys_linkat + PTR sys_symlinkat /* 6260 */ + PTR sys_readlinkat + PTR sys_fchmodat + PTR sys_faccessat + PTR compat_sys_pselect6 + PTR compat_sys_ppoll /* 6265 */ + PTR sys_unshare + PTR sys_splice + PTR sys_sync_file_range + PTR sys_tee + PTR compat_sys_vmsplice /* 6270 */ + PTR compat_sys_move_pages + PTR compat_sys_set_robust_list + PTR compat_sys_get_robust_list + PTR compat_sys_kexec_load + PTR sys_getcpu /* 6275 */ + PTR compat_sys_epoll_pwait + PTR sys_ioprio_set + PTR sys_ioprio_get + PTR compat_sys_utimensat + PTR compat_sys_signalfd /* 6280 */ + PTR sys_ni_syscall /* was timerfd */ + PTR sys_eventfd + PTR sys_fallocate + PTR sys_timerfd_create + PTR compat_sys_timerfd_gettime /* 6285 */ + PTR compat_sys_timerfd_settime + PTR compat_sys_signalfd4 + PTR sys_eventfd2 + PTR sys_epoll_create1 + PTR sys_dup3 /* 6290 */ + PTR sys_pipe2 + PTR sys_inotify_init1 + PTR compat_sys_preadv + PTR compat_sys_pwritev + PTR compat_sys_rt_tgsigqueueinfo /* 6295 */ + PTR sys_perf_event_open + PTR sys_accept4 + PTR compat_sys_recvmmsg + PTR sys_getdents64 + PTR sys_fanotify_init /* 6300 */ + PTR sys_fanotify_mark + PTR sys_prlimit64 + PTR sys_name_to_handle_at + PTR sys_open_by_handle_at + PTR compat_sys_clock_adjtime /* 6305 */ + PTR sys_syncfs + PTR compat_sys_sendmmsg + PTR sys_setns + PTR compat_sys_process_vm_readv + PTR compat_sys_process_vm_writev /* 6310 */ + PTR sys_kcmp + PTR sys_finit_module + PTR sys_sched_setattr + PTR sys_sched_getattr + PTR sys_renameat2 /* 6315 */ + PTR sys_seccomp + PTR sys_getrandom + PTR sys_memfd_create + PTR sys_bpf + PTR compat_sys_execveat /* 6320 */ + .size sysn32_call_table,.-sysn32_call_table |