| /* |
| * 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, 02 by Ralf Baechle |
| * Copyright (C) 1999, 2000 Silicon Graphics, Inc. |
| * Copyright (C) 2001 MIPS Technologies, Inc. |
| */ |
| #include <linux/config.h> |
| #include <linux/errno.h> |
| #include <asm/asm.h> |
| #include <asm/asmmacro.h> |
| #include <asm/mipsregs.h> |
| #include <asm/regdef.h> |
| #include <asm/stackframe.h> |
| #include <asm/asm-offsets.h> |
| #include <asm/sysmips.h> |
| #include <asm/thread_info.h> |
| #include <asm/unistd.h> |
| #include <asm/war.h> |
| |
| #ifndef CONFIG_BINFMT_ELF32 |
| /* Neither O32 nor N32, so define handle_sys here */ |
| #define handle_sys64 handle_sys |
| #endif |
| |
| .align 5 |
| NESTED(handle_sys64, PT_SIZE, sp) |
| #if !defined(CONFIG_MIPS32_O32) && !defined(CONFIG_MIPS32_N32) |
| /* |
| * When 32-bit compatibility is configured scall_o32.S |
| * already did this. |
| */ |
| .set noat |
| SAVE_SOME |
| STI |
| .set at |
| #endif |
| |
| dsubu t0, v0, __NR_64_Linux # check syscall number |
| sltiu t0, t0, __NR_64_Linux_syscalls + 1 |
| #if !defined(CONFIG_MIPS32_O32) && !defined(CONFIG_MIPS32_N32) |
| ld t1, PT_EPC(sp) # skip syscall on return |
| daddiu t1, 4 # skip to next instruction |
| sd t1, PT_EPC(sp) |
| #endif |
| beqz t0, illegal_syscall |
| |
| dsll t0, v0, 3 # offset into table |
| ld t2, (sys_call_table - (__NR_64_Linux * 8))(t0) |
| # syscall routine |
| |
| sd a3, PT_R26(sp) # save a3 for syscall restarting |
| |
| li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT |
| LONG_L t0, TI_FLAGS($28) # syscall tracing enabled? |
| and t0, t1, t0 |
| bnez t0, 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 |
| |
| dnegu v0 # error |
| sd v0, PT_R0(sp) # set flag for syscall |
| # restarting |
| 1: sd v0, PT_R2(sp) # result |
| |
| n64_syscall_exit: |
| local_irq_disable # make sure need_resched and |
| # signals dont change between |
| # sampling and return |
| LONG_L a2, TI_FLAGS($28) # current->work |
| li t0, _TIF_ALLWORK_MASK |
| and t0, a2, t0 |
| bnez t0, n64_syscall_exit_work |
| |
| j restore_partial |
| |
| n64_syscall_exit_work: |
| j syscall_exit_work_partial |
| |
| /* ------------------------------------------------------------------------ */ |
| |
| syscall_trace_entry: |
| SAVE_STATIC |
| move s0, t2 |
| move a0, sp |
| li a1, 0 |
| jal do_syscall_trace |
| |
| 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 |
| |
| dnegu v0 # error |
| sd v0, PT_R0(sp) # set flag for syscall restarting |
| 1: sd v0, PT_R2(sp) # result |
| |
| j syscall_exit |
| |
| illegal_syscall: |
| /* This also isn't a 64-bit syscall, throw an error. */ |
| li v0, -ENOSYS # error |
| sd v0, PT_R2(sp) |
| li t0, 1 # set error flag |
| sd t0, PT_R7(sp) |
| j n64_syscall_exit |
| END(handle_sys64) |
| |
| LEAF(mips_atomic_set) |
| andi v0, a1, 3 # must be word aligned |
| bnez v0, bad_alignment |
| |
| LONG_L v1, TI_ADDR_LIMIT($28) # in legal address range? |
| LONG_ADDIU a0, a1, 4 |
| or a0, a0, a1 |
| and a0, a0, v1 |
| bltz a0, bad_address |
| |
| #ifdef CONFIG_CPU_HAS_LLSC |
| /* Ok, this is the ll/sc case. World is sane :-) */ |
| 1: ll v0, (a1) |
| move a0, a2 |
| 2: sc a0, (a1) |
| #if R10000_LLSC_WAR |
| beqzl a0, 1b |
| #else |
| beqz a0, 1b |
| #endif |
| |
| .section __ex_table,"a" |
| PTR 1b, bad_stack |
| PTR 2b, bad_stack |
| .previous |
| #else |
| sw a1, 16(sp) |
| sw a2, 20(sp) |
| |
| move a0, sp |
| move a2, a1 |
| li a1, 1 |
| jal do_page_fault |
| |
| lw a1, 16(sp) |
| lw a2, 20(sp) |
| |
| /* |
| * At this point the page should be readable and writable unless |
| * there was no more memory available. |
| */ |
| 1: lw v0, (a1) |
| 2: sw a2, (a1) |
| |
| .section __ex_table,"a" |
| PTR 1b, no_mem |
| PTR 2b, no_mem |
| .previous |
| #endif |
| |
| sd zero, PT_R7(sp) # success |
| sd v0, PT_R2(sp) # result |
| |
| j n64_syscall_exit # continue like a normal syscall |
| |
| no_mem: li v0, -ENOMEM |
| jr ra |
| |
| bad_address: |
| li v0, -EFAULT |
| jr ra |
| |
| bad_alignment: |
| li v0, -EINVAL |
| jr ra |
| END(mips_atomic_set) |
| |
| LEAF(sys_sysmips) |
| beq a0, MIPS_ATOMIC_SET, mips_atomic_set |
| j _sys_sysmips |
| END(sys_sysmips) |
| |
| .align 3 |
| sys_call_table: |
| PTR sys_read /* 5000 */ |
| PTR sys_write |
| PTR sys_open |
| PTR sys_close |
| PTR sys_newstat |
| PTR sys_newfstat /* 5005 */ |
| PTR sys_newlstat |
| PTR sys_poll |
| PTR sys_lseek |
| PTR old_mmap |
| PTR sys_mprotect /* 5010 */ |
| PTR sys_munmap |
| PTR sys_brk |
| PTR sys_rt_sigaction |
| PTR sys_rt_sigprocmask |
| PTR sys_ioctl /* 5015 */ |
| PTR sys_pread64 |
| PTR sys_pwrite64 |
| PTR sys_readv |
| PTR sys_writev |
| PTR sys_access /* 5020 */ |
| PTR sys_pipe |
| PTR sys_select |
| PTR sys_sched_yield |
| PTR sys_mremap |
| PTR sys_msync /* 5025 */ |
| PTR sys_mincore |
| PTR sys_madvise |
| PTR sys_shmget |
| PTR sys_shmat |
| PTR sys_shmctl /* 5030 */ |
| PTR sys_dup |
| PTR sys_dup2 |
| PTR sys_pause |
| PTR sys_nanosleep |
| PTR sys_getitimer /* 5035 */ |
| PTR sys_setitimer |
| PTR sys_alarm |
| PTR sys_getpid |
| PTR sys_sendfile64 |
| PTR sys_socket /* 5040 */ |
| PTR sys_connect |
| PTR sys_accept |
| PTR sys_sendto |
| PTR sys_recvfrom |
| PTR sys_sendmsg /* 5045 */ |
| PTR sys_recvmsg |
| PTR sys_shutdown |
| PTR sys_bind |
| PTR sys_listen |
| PTR sys_getsockname /* 5050 */ |
| PTR sys_getpeername |
| PTR sys_socketpair |
| PTR sys_setsockopt |
| PTR sys_getsockopt |
| PTR sys_clone /* 5055 */ |
| PTR sys_fork |
| PTR sys_execve |
| PTR sys_exit |
| PTR sys_wait4 |
| PTR sys_kill /* 5060 */ |
| PTR sys_newuname |
| PTR sys_semget |
| PTR sys_semop |
| PTR sys_semctl |
| PTR sys_shmdt /* 5065 */ |
| PTR sys_msgget |
| PTR sys_msgsnd |
| PTR sys_msgrcv |
| PTR sys_msgctl |
| PTR sys_fcntl /* 5070 */ |
| PTR sys_flock |
| PTR sys_fsync |
| PTR sys_fdatasync |
| PTR sys_truncate |
| PTR sys_ftruncate /* 5075 */ |
| PTR sys_getdents |
| PTR sys_getcwd |
| PTR sys_chdir |
| PTR sys_fchdir |
| PTR sys_rename /* 5080 */ |
| PTR sys_mkdir |
| PTR sys_rmdir |
| PTR sys_creat |
| PTR sys_link |
| PTR sys_unlink /* 5085 */ |
| PTR sys_symlink |
| PTR sys_readlink |
| PTR sys_chmod |
| PTR sys_fchmod |
| PTR sys_chown /* 5090 */ |
| PTR sys_fchown |
| PTR sys_lchown |
| PTR sys_umask |
| PTR sys_gettimeofday |
| PTR sys_getrlimit /* 5095 */ |
| PTR sys_getrusage |
| PTR sys_sysinfo |
| PTR sys_times |
| PTR sys_ptrace |
| PTR sys_getuid /* 5100 */ |
| PTR sys_syslog |
| PTR sys_getgid |
| PTR sys_setuid |
| PTR sys_setgid |
| PTR sys_geteuid /* 5105 */ |
| PTR sys_getegid |
| PTR sys_setpgid |
| PTR sys_getppid |
| PTR sys_getpgrp |
| PTR sys_setsid /* 5110 */ |
| PTR sys_setreuid |
| PTR sys_setregid |
| PTR sys_getgroups |
| PTR sys_setgroups |
| PTR sys_setresuid /* 5115 */ |
| PTR sys_getresuid |
| PTR sys_setresgid |
| PTR sys_getresgid |
| PTR sys_getpgid |
| PTR sys_setfsuid /* 5120 */ |
| PTR sys_setfsgid |
| PTR sys_getsid |
| PTR sys_capget |
| PTR sys_capset |
| PTR sys_rt_sigpending /* 5125 */ |
| PTR sys_rt_sigtimedwait |
| PTR sys_rt_sigqueueinfo |
| PTR sys_rt_sigsuspend |
| PTR sys_sigaltstack |
| PTR sys_utime /* 5130 */ |
| PTR sys_mknod |
| PTR sys_personality |
| PTR sys_ustat |
| PTR sys_statfs |
| PTR sys_fstatfs /* 5135 */ |
| PTR sys_sysfs |
| PTR sys_getpriority |
| PTR sys_setpriority |
| PTR sys_sched_setparam |
| PTR sys_sched_getparam /* 5140 */ |
| PTR sys_sched_setscheduler |
| PTR sys_sched_getscheduler |
| PTR sys_sched_get_priority_max |
| PTR sys_sched_get_priority_min |
| PTR sys_sched_rr_get_interval /* 5145 */ |
| PTR sys_mlock |
| PTR sys_munlock |
| PTR sys_mlockall |
| PTR sys_munlockall |
| PTR sys_vhangup /* 5150 */ |
| PTR sys_pivot_root |
| PTR sys_sysctl |
| PTR sys_prctl |
| PTR sys_adjtimex |
| PTR sys_setrlimit /* 5155 */ |
| PTR sys_chroot |
| PTR sys_sync |
| PTR sys_acct |
| PTR sys_settimeofday |
| PTR sys_mount /* 5160 */ |
| PTR sys_umount |
| PTR sys_swapon |
| PTR sys_swapoff |
| PTR sys_reboot |
| PTR sys_sethostname /* 5165 */ |
| PTR sys_setdomainname |
| PTR sys_ni_syscall /* was create_module */ |
| PTR sys_init_module |
| PTR sys_delete_module |
| PTR sys_ni_syscall /* 5170, was get_kernel_syms */ |
| PTR sys_ni_syscall /* was query_module */ |
| PTR sys_quotactl |
| PTR sys_nfsservctl |
| PTR sys_ni_syscall /* res. for getpmsg */ |
| PTR sys_ni_syscall /* 5175 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 /* 5180 */ |
| PTR sys_lsetxattr |
| PTR sys_fsetxattr |
| PTR sys_getxattr |
| PTR sys_lgetxattr |
| PTR sys_fgetxattr /* 5185 */ |
| PTR sys_listxattr |
| PTR sys_llistxattr |
| PTR sys_flistxattr |
| PTR sys_removexattr |
| PTR sys_lremovexattr /* 5190 */ |
| PTR sys_fremovexattr |
| PTR sys_tkill |
| PTR sys_ni_syscall |
| PTR sys_futex |
| PTR sys_sched_setaffinity /* 5195 */ |
| PTR sys_sched_getaffinity |
| PTR sys_cacheflush |
| PTR sys_cachectl |
| PTR sys_sysmips |
| PTR sys_io_setup /* 5200 */ |
| PTR sys_io_destroy |
| PTR sys_io_getevents |
| PTR sys_io_submit |
| PTR sys_io_cancel |
| PTR sys_exit_group /* 5205 */ |
| PTR sys_lookup_dcookie |
| PTR sys_epoll_create |
| PTR sys_epoll_ctl |
| PTR sys_epoll_wait |
| PTR sys_remap_file_pages /* 5210 */ |
| PTR sys_rt_sigreturn |
| PTR sys_set_tid_address |
| PTR sys_restart_syscall |
| PTR sys_semtimedop |
| PTR sys_fadvise64_64 /* 5215 */ |
| PTR sys_timer_create |
| PTR sys_timer_settime |
| PTR sys_timer_gettime |
| PTR sys_timer_getoverrun |
| PTR sys_timer_delete /* 5220 */ |
| PTR sys_clock_settime |
| PTR sys_clock_gettime |
| PTR sys_clock_getres |
| PTR sys_clock_nanosleep |
| PTR sys_tgkill /* 5225 */ |
| PTR sys_utimes |
| PTR sys_mbind |
| PTR sys_ni_syscall /* sys_get_mempolicy */ |
| PTR sys_ni_syscall /* sys_set_mempolicy */ |
| PTR sys_mq_open /* 5230 */ |
| PTR sys_mq_unlink |
| PTR sys_mq_timedsend |
| PTR sys_mq_timedreceive |
| PTR sys_mq_notify |
| PTR sys_mq_getsetattr /* 5235 */ |
| PTR sys_ni_syscall /* sys_vserver */ |
| PTR sys_waitid |
| PTR sys_ni_syscall /* available, was setaltroot */ |
| PTR sys_add_key |
| PTR sys_request_key /* 5240 */ |
| PTR sys_keyctl |
| PTR sys_set_thread_area |
| PTR sys_inotify_init |
| PTR sys_inotify_add_watch |
| PTR sys_inotify_rm_watch /* 5245 */ |
| PTR sys_migrate_pages |
| PTR sys_openat |
| PTR sys_mkdirat |
| PTR sys_mknodat |
| PTR sys_fchownat /* 5250 */ |
| PTR sys_futimesat |
| PTR sys_newfstatat |
| PTR sys_unlinkat |
| PTR sys_renameat |
| PTR sys_linkat /* 5255 */ |
| PTR sys_symlinkat |
| PTR sys_readlinkat |
| PTR sys_fchmodat |
| PTR sys_faccessat |
| PTR sys_pselect6 /* 5260 */ |
| PTR sys_ppoll |
| PTR sys_unshare |
| PTR sys_splice |
| PTR sys_sync_file_range |