2 * File: arch/blackfin/mach-common/entry.S
4 * Author: Linus Torvalds
7 * Description: contains the system-call and fault low-level handling routines.
8 * This also contains the timer-interrupt handler, as well as all
9 * interrupts and faults that can result in a task-switch.
12 * Copyright 2004-2006 Analog Devices Inc.
14 * Bugs: Enter bugs at http://blackfin.uclinux.org/
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * (at your option) any later version.
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, see the file COPYING, or write
28 * to the Free Software Foundation, Inc.,
29 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
33 * 25-Dec-2004 - LG Soft India
34 * 1. Fix in return_from_int, to make sure any pending
35 * system call in ILAT for this process to get
36 * executed, otherwise in case context switch happens,
37 * system call of first process (i.e in ILAT) will be
38 * carried forward to the switched process.
39 * 2. Removed Constant references for the following
46 * NOTE: This code handles signal-recognition, which happens every time
47 * after a timer-interrupt and after each system call.
51 #include <linux/linkage.h>
52 #include <asm/blackfin.h>
53 #include <asm/unistd.h>
54 #include <asm/errno.h>
55 #include <asm/thread_info.h> /* TIF_NEED_RESCHED */
56 #include <asm/asm-offsets.h>
58 #include <asm/mach-common/context.S>
60 #ifdef CONFIG_DEBUG_BFIN_NO_KERN_HWTRACE
62 * TODO: this should be proper save/restore, but for now
63 * we'll just cheat and use 0x1/0x13
65 # define DEBUG_START_HWTRACE \
70 # define DEBUG_STOP_HWTRACE \
76 # define DEBUG_START_HWTRACE
77 # define DEBUG_STOP_HWTRACE
80 #ifdef CONFIG_EXCPT_IRQ_SYSC_L1
86 /* Slightly simplified and streamlined entry point for CPLB misses.
87 * This one does not lower the level to IRQ5, and thus can be used to
88 * patch up CPLB misses on the kernel stack.
91 #if defined(ANOMALY_05000261)
93 * Work around an anomaly: if we see a new DCPLB fault, return
94 * without doing anything. Then, if we get the same fault again,
97 p5.l = _last_cplb_fault_retx;
98 p5.h = _last_cplb_fault_retx;
103 if !cc jump _return_from_exception;
109 (R7:6,P5:4) = [sp++];
120 /* Transform this into a syscall - twiddle the syscall vector. */
128 ENDPROC(_ex_spinlock)
132 (R7:6,P5:4) = [sp++];
134 raise 15; /* invoked by TRAP #0, for sys call */
141 /* To end up here, vector 15 was changed - so we have to change it
146 p1.l = _evt_system_call;
147 p1.h = _evt_system_call;
152 call _sys_bfin_spinlock;
157 ENDPROC(_spinlock_bh)
166 ENTRY(_ex_single_step)
170 if cc jump _return_from_exception
179 if !cc jump _ex_trap_c;
182 r6.h = _exception_to_level5;
183 r6.l = _exception_to_level5;
186 if !cc jump _ex_trap_c;
188 _return_from_exception:
190 #ifdef ANOMALY_05000257
196 (R7:6,P5:4) = [sp++];
202 ENTRY(_handle_bad_cplb)
203 /* To get here, we just tried and failed to change a CPLB
204 * so, handle things in trap_c (C code), by lowering to
205 * IRQ5, just like we normally do. Since this is not a
206 * "normal" return path, we have a do alot of stuff to
207 * the stack to get ready so, we can fall through - we
208 * need to make a CPLB exception look like a normal exception
214 [--sp] = (R7:6, P5:4);
217 /* Call C code (trap_c) to handle the exception, which most
218 * likely involves sending a signal to the current process.
219 * To avoid double faults, lower our priority to IRQ5 first.
221 P5.h = _exception_to_level5;
222 P5.l = _exception_to_level5;
228 /* Disable all interrupts, but make sure level 5 is enabled so
229 * we can switch to that level. Save the old mask. */
231 p4.l = _excpt_saved_imask;
232 p4.h = _excpt_saved_imask;
237 /* Save the excause into a circular buffer, in case the instruction
238 * which caused this excecptions causes others.
240 P5.l = _in_ptr_excause;
241 P5.h = _in_ptr_excause;
247 R6.l = _excause_circ_buf;
248 R6.h = _excause_circ_buf;
255 (R7:6,P5:4) = [sp++];
262 ENTRY(_exception_to_level5)
265 /* Restore interrupt mask. We haven't pushed RETI, so this
266 * doesn't enable interrupts until we return from this handler. */
267 p4.l = _excpt_saved_imask;
268 p4.h = _excpt_saved_imask;
272 /* Restore the hardware error vector. */
283 r0 = [p2]; /* Read current IPEND */
284 [sp + PT_IPEND] = r0; /* Store IPEND */
286 /* Pop the excause from the circular buffer and push it on the stack
287 * (in the right place - if you change the location of SEQSTAT, you
288 * must change this offset.
291 P5.l = _out_ptr_excause;
292 P5.h = _out_ptr_excause;
298 R6.l = _excause_circ_buf;
299 R6.h = _excause_circ_buf;
305 r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */
310 /* See if anything else is in the exception buffer
311 * if there is, process it
313 P5.l = _out_ptr_excause;
314 P5.h = _out_ptr_excause;
315 P4.l = _in_ptr_excause;
316 P4.h = _in_ptr_excause;
320 if ! CC JUMP .L_excep_to_5_again
322 call _ret_from_exception;
325 ENDPROC(_exception_to_level5)
327 ENTRY(_trap) /* Exception: 4th entry into system event table(supervisor mode)*/
328 /* Since the kernel stack can be anywhere, it's not guaranteed to be
329 * covered by a CPLB. Switch to an exception stack; use RETN as a
330 * scratch register (for want of a better option).
333 sp.l = _exception_stack_top;
334 sp.h = _exception_stack_top;
335 /* Try to deal with syscalls quickly. */
337 [--sp] = (R7:6, P5:4);
339 r7 = SEQSTAT; /* reason code is in bit 5:0 */
340 r6.l = lo(SEQSTAT_EXCAUSE);
341 r6.h = hi(SEQSTAT_EXCAUSE);
351 r7 = -ENOSYS; /* signextending enough */
352 [sp + PT_R0] = r7; /* return value from system call */
353 jump .Lsyscall_really_exit;
356 ENTRY(_kernel_execve)
359 r3 = SIZEOF_PTREGS / 4;
374 /* Success. Copy our temporary pt_regs to the top of the kernel
375 * stack and do a normal exception return.
378 r0 = (-KERNEL_STACK_SIZE) (x);
382 r0 = KERNEL_STACK_SIZE - 4 (z);
388 r3 = SIZEOF_PTREGS / 4;
394 if ! cc jump 0b (bp);
396 r0 = (KERNEL_STACK_SIZE - SIZEOF_PTREGS) (z);
401 [SP + PT_SYSCFG] = r0;
402 [p3 + (TASK_THREAD + THREAD_KSP)] = sp;
409 ENDPROC(_kernel_execve)
417 [sp + PT_IPEND] = r0;
419 /* Store RETS for now */
421 [sp + PT_RESERVED] = r0;
422 /* Set the stack for the current process */
424 r6.l = lo(ALIGN_PAGE_MASK);
425 r6.h = hi(ALIGN_PAGE_MASK);
426 r7 = r7 & r6; /* thread_info */
430 [p2+(TASK_THREAD+THREAD_KSP)] = sp;
432 /* Check the System Call */
434 /* System call number is passed in P0 */
437 if ! cc jump .Lbadsys;
439 /* are we tracing syscalls?*/
441 r6.l = lo(ALIGN_PAGE_MASK);
442 r6.h = hi(ALIGN_PAGE_MASK);
446 CC = BITTST(r7,TIF_SYSCALL_TRACE);
447 if CC JUMP _sys_trace;
449 /* Execute the appropriate system call */
452 p5.l = _sys_call_table;
453 p5.h = _sys_call_table;
470 r4.l = lo(ALIGN_PAGE_MASK);
471 r4.h = hi(ALIGN_PAGE_MASK);
472 r7 = r7 & r4; /* thread_info->flags */
474 .Lresume_userspace_1:
475 /* Disable interrupts. */
479 r7 = [p5 + TI_FLAGS];
480 r4.l = lo(_TIF_WORK_MASK);
481 r4.h = hi(_TIF_WORK_MASK);
485 cc = BITTST(r7, TIF_NEED_RESCHED);
486 if !cc jump .Lsyscall_sigpending;
488 /* Reenable interrupts. */
496 jump .Lresume_userspace_1;
498 .Lsyscall_sigpending:
499 cc = BITTST(r7, TIF_RESTORE_SIGMASK);
500 if cc jump .Lsyscall_do_signals;
501 cc = BITTST(r7, TIF_SIGPENDING);
502 if !cc jump .Lsyscall_really_exit;
503 .Lsyscall_do_signals:
504 /* Reenable interrupts. */
513 .Lsyscall_really_exit:
514 r5 = [sp + PT_RESERVED];
517 ENDPROC(_system_call)
522 /* Execute the appropriate system call */
525 p5.l = _sys_call_table;
526 p5.h = _sys_call_table;
545 jump .Lresume_userspace;
550 * Beware - when entering resume, prev (the current task) is
551 * in r0, next (the new task) is in r1.
557 [--sp] = (r7:4, p5:3);
561 [p0+(TASK_THREAD+THREAD_USP)] = p2;
563 /* save current kernel stack pointer */
564 [p0+(TASK_THREAD+THREAD_KSP)] = sp;
566 /* save program counter */
567 r1.l = _new_old_task;
568 r1.h = _new_old_task;
569 [p0+(TASK_THREAD+THREAD_PC)] = r1;
571 /* restore the kernel stack pointer */
572 sp = [p1+(TASK_THREAD+THREAD_KSP)];
574 /* restore user stack pointer */
575 p0 = [p1+(TASK_THREAD+THREAD_USP)];
579 p0 = [p1+(TASK_THREAD+THREAD_PC)];
583 * Following code actually lands up in a new (old) task.
587 (r7:4, p5:3) = [sp++];
592 * When we come out of resume, r0 carries "old" task, becuase we are
598 ENTRY(_ret_from_exception)
604 [sp + PT_IPEND] = r0;
612 if !cc jump 4f; /* if not return to user mode, get out */
614 /* Make sure any pending system call or deferred exception
615 * return in ILAT for this process to get executed, otherwise
616 * in case context switch happens, system call of
617 * first process (i.e in ILAT) will be carried
618 * forward to the switched process
624 r1 = (EVT_IVG14 | EVT_IVG15) (z);
629 /* Set the stack for the current process */
631 r4.l = lo(ALIGN_PAGE_MASK);
632 r4.h = hi(ALIGN_PAGE_MASK);
633 r7 = r7 & r4; /* thread_info->flags */
635 r7 = [p5 + TI_FLAGS];
636 r4.l = lo(_TIF_WORK_MASK);
637 r4.h = hi(_TIF_WORK_MASK);
644 p1.l = _schedule_and_signal;
645 p1.h = _schedule_and_signal;
648 raise 15; /* raise evt14 to do signal or reschedule */
655 ENDPROC(_ret_from_exception)
657 ENTRY(_return_from_int)
658 /* If someone else already raised IRQ 15, do nothing. */
663 cc = bittst (r0, EVT_IVG15_P);
666 /* if not return to user mode, get out */
680 /* Lower the interrupt level to 15. */
683 p1.l = _schedule_and_signal_from_int;
684 p1.h = _schedule_and_signal_from_int;
687 #if defined(ANOMALY_05000281)
688 r0.l = lo(CONFIG_BOOT_LOAD);
689 r0.h = hi(CONFIG_BOOT_LOAD);
694 raise 15; /* raise evt15 to do signal or reschedule */
698 ENDPROC(_return_from_int)
700 ENTRY(_lower_to_irq14)
701 #if defined(ANOMALY_05000281)
702 r0.l = lo(CONFIG_BOOT_LOAD);
703 r0.h = hi(CONFIG_BOOT_LOAD);
710 ENTRY(_evt14_softirq)
711 #ifdef CONFIG_DEBUG_HWERR
721 _schedule_and_signal_from_int:
722 /* To end up here, vector 15 was changed - so we have to change it
727 p1.l = _evt_system_call;
728 p1.h = _evt_system_call;
732 /* Set orig_p0 to -1 to indicate this isn't the end of a syscall. */
734 [sp + PT_ORIG_P0] = r0;
737 [sp + PT_RESERVED] = p1;
744 jump.s .Lresume_userspace;
746 _schedule_and_signal:
748 /* To end up here, vector 15 was changed - so we have to change it
753 p1.l = _evt_system_call;
754 p1.h = _evt_system_call;
759 [sp + PT_RESERVED] = P0;
760 call .Lresume_userspace;
764 ENDPROC(_lower_to_irq14)
766 /* Make sure when we start, that the circular buffer is initialized properly
767 * R0 and P0 are call clobbered, so we can use them here.
769 ENTRY(_init_exception_buff)
771 p0.h = _in_ptr_excause;
772 p0.l = _in_ptr_excause;
774 p0.h = _out_ptr_excause;
775 p0.l = _out_ptr_excause;
778 ENDPROC(_init_exception_buff)
781 * Put these in the kernel data section - that should always be covered by
782 * a CPLB. This is needed to ensure we don't get double fault conditions
785 #ifdef CONFIG_SYSCALL_TAB_L1
792 /* entry for each EXCAUSE[5:0]
793 * This table bmust be in sync with the table in ./kernel/traps.c
794 * EXCPT instruction can provide 4 bits of EXCAUSE, allowing 16 to be user defined
796 .long _ex_syscall; /* 0x00 - User Defined - Linux Syscall */
797 .long _ex_soft_bp /* 0x01 - User Defined - Software breakpoint */
798 .long _ex_trap_c /* 0x02 - User Defined */
799 .long _ex_trap_c /* 0x03 - User Defined - Atomic test and set service */
800 .long _ex_spinlock /* 0x04 - User Defined */
801 .long _ex_trap_c /* 0x05 - User Defined */
802 .long _ex_trap_c /* 0x06 - User Defined */
803 .long _ex_trap_c /* 0x07 - User Defined */
804 .long _ex_trap_c /* 0x08 - User Defined */
805 .long _ex_trap_c /* 0x09 - User Defined */
806 .long _ex_trap_c /* 0x0A - User Defined */
807 .long _ex_trap_c /* 0x0B - User Defined */
808 .long _ex_trap_c /* 0x0C - User Defined */
809 .long _ex_trap_c /* 0x0D - User Defined */
810 .long _ex_trap_c /* 0x0E - User Defined */
811 .long _ex_trap_c /* 0x0F - User Defined */
812 .long _ex_single_step /* 0x10 - HW Single step */
813 .long _ex_trap_c /* 0x11 - Trace Buffer Full */
814 .long _ex_trap_c /* 0x12 - Reserved */
815 .long _ex_trap_c /* 0x13 - Reserved */
816 .long _ex_trap_c /* 0x14 - Reserved */
817 .long _ex_trap_c /* 0x15 - Reserved */
818 .long _ex_trap_c /* 0x16 - Reserved */
819 .long _ex_trap_c /* 0x17 - Reserved */
820 .long _ex_trap_c /* 0x18 - Reserved */
821 .long _ex_trap_c /* 0x19 - Reserved */
822 .long _ex_trap_c /* 0x1A - Reserved */
823 .long _ex_trap_c /* 0x1B - Reserved */
824 .long _ex_trap_c /* 0x1C - Reserved */
825 .long _ex_trap_c /* 0x1D - Reserved */
826 .long _ex_trap_c /* 0x1E - Reserved */
827 .long _ex_trap_c /* 0x1F - Reserved */
828 .long _ex_trap_c /* 0x20 - Reserved */
829 .long _ex_trap_c /* 0x21 - Undefined Instruction */
830 .long _ex_trap_c /* 0x22 - Illegal Instruction Combination */
831 .long _ex_dcplb /* 0x23 - Data CPLB Protection Violation */
832 .long _ex_trap_c /* 0x24 - Data access misaligned */
833 .long _ex_trap_c /* 0x25 - Unrecoverable Event */
834 .long _ex_dcplb /* 0x26 - Data CPLB Miss */
835 .long _ex_trap_c /* 0x27 - Data CPLB Multiple Hits - Linux Trap Zero */
836 .long _ex_trap_c /* 0x28 - Emulation Watchpoint */
837 .long _ex_trap_c /* 0x29 - Instruction fetch access error (535 only) */
838 .long _ex_trap_c /* 0x2A - Instruction fetch misaligned */
839 .long _ex_icplb /* 0x2B - Instruction CPLB protection Violation */
840 .long _ex_icplb /* 0x2C - Instruction CPLB miss */
841 .long _ex_trap_c /* 0x2D - Instruction CPLB Multiple Hits */
842 .long _ex_trap_c /* 0x2E - Illegal use of Supervisor Resource */
843 .long _ex_trap_c /* 0x2E - Illegal use of Supervisor Resource */
844 .long _ex_trap_c /* 0x2F - Reserved */
845 .long _ex_trap_c /* 0x30 - Reserved */
846 .long _ex_trap_c /* 0x31 - Reserved */
847 .long _ex_trap_c /* 0x32 - Reserved */
848 .long _ex_trap_c /* 0x33 - Reserved */
849 .long _ex_trap_c /* 0x34 - Reserved */
850 .long _ex_trap_c /* 0x35 - Reserved */
851 .long _ex_trap_c /* 0x36 - Reserved */
852 .long _ex_trap_c /* 0x37 - Reserved */
853 .long _ex_trap_c /* 0x38 - Reserved */
854 .long _ex_trap_c /* 0x39 - Reserved */
855 .long _ex_trap_c /* 0x3A - Reserved */
856 .long _ex_trap_c /* 0x3B - Reserved */
857 .long _ex_trap_c /* 0x3C - Reserved */
858 .long _ex_trap_c /* 0x3D - Reserved */
859 .long _ex_trap_c /* 0x3E - Reserved */
860 .long _ex_trap_c /* 0x3F - Reserved */
863 ENTRY(_sys_call_table)
864 .long _sys_ni_syscall /* 0 - old "setup()" system call*/
869 .long _sys_open /* 5 */
871 .long _sys_ni_syscall /* old waitpid */
874 .long _sys_unlink /* 10 */
879 .long _sys_chmod /* 15 */
880 .long _sys_chown /* chown16 */
881 .long _sys_ni_syscall /* old break syscall holder */
882 .long _sys_ni_syscall /* old stat */
884 .long _sys_getpid /* 20 */
886 .long _sys_ni_syscall /* old umount */
889 .long _sys_stime /* 25 */
892 .long _sys_ni_syscall /* old fstat */
894 .long _sys_ni_syscall /* old utime */ /* 30 */
895 .long _sys_ni_syscall /* old stty syscall holder */
896 .long _sys_ni_syscall /* old gtty syscall holder */
899 .long _sys_ni_syscall /* 35 */ /* old ftime syscall holder */
904 .long _sys_rmdir /* 40 */
908 .long _sys_ni_syscall /* old prof syscall holder */
909 .long _sys_brk /* 45 */
912 .long _sys_ni_syscall /* old sys_signal */
913 .long _sys_geteuid /* geteuid16 */
914 .long _sys_getegid /* getegid16 */ /* 50 */
916 .long _sys_umount /* recycled never used phys() */
917 .long _sys_ni_syscall /* old lock syscall holder */
919 .long _sys_fcntl /* 55 */
920 .long _sys_ni_syscall /* old mpx syscall holder */
922 .long _sys_ni_syscall /* old ulimit syscall holder */
923 .long _sys_ni_syscall /* old old uname */
924 .long _sys_umask /* 60 */
929 .long _sys_getpgrp /* 65 */
931 .long _sys_ni_syscall /* old sys_sigaction */
934 .long _sys_setreuid /* setreuid16 */ /* 70 */
935 .long _sys_setregid /* setregid16 */
936 .long _sys_ni_syscall /* old sys_sigsuspend */
937 .long _sys_ni_syscall /* old sys_sigpending */
938 .long _sys_sethostname
939 .long _sys_setrlimit /* 75 */
940 .long _sys_ni_syscall /* old getrlimit */
942 .long _sys_gettimeofday
943 .long _sys_settimeofday
944 .long _sys_getgroups /* getgroups16 */ /* 80 */
945 .long _sys_setgroups /* setgroups16 */
946 .long _sys_ni_syscall /* old_select */
948 .long _sys_ni_syscall /* old lstat */
949 .long _sys_readlink /* 85 */
951 .long _sys_ni_syscall /* sys_swapon */
953 .long _sys_ni_syscall /* old_readdir */
954 .long _sys_ni_syscall /* sys_mmap */ /* 90 */
959 .long _sys_fchown /* fchown16 */ /* 95 */
960 .long _sys_getpriority
961 .long _sys_setpriority
962 .long _sys_ni_syscall /* old profil syscall holder */
964 .long _sys_fstatfs /* 100 */
965 .long _sys_ni_syscall
966 .long _sys_ni_syscall /* old sys_socketcall */
969 .long _sys_getitimer /* 105 */
973 .long _sys_ni_syscall /* old uname */
974 .long _sys_ni_syscall /* iopl for i386 */ /* 110 */
976 .long _sys_ni_syscall /* obsolete idle() syscall */
977 .long _sys_ni_syscall /* vm86old for i386 */
979 .long _sys_ni_syscall /* 115 */ /* sys_swapoff */
981 .long _sys_ni_syscall /* old sys_ipc */
983 .long _sys_ni_syscall /* old sys_sigreturn */
984 .long _sys_clone /* 120 */
985 .long _sys_setdomainname
987 .long _sys_ni_syscall /* old sys_modify_ldt */
989 .long _sys_ni_syscall /* 125 */ /* sys_mprotect */
990 .long _sys_ni_syscall /* old sys_sigprocmask */
991 .long _sys_ni_syscall /* old "creat_module" */
992 .long _sys_init_module
993 .long _sys_delete_module
994 .long _sys_ni_syscall /* 130: old "get_kernel_syms" */
999 .long _sys_ni_syscall /* 135 */ /* sys_sysfs */
1000 .long _sys_personality
1001 .long _sys_ni_syscall /* for afs_syscall */
1002 .long _sys_setfsuid /* setfsuid16 */
1003 .long _sys_setfsgid /* setfsgid16 */
1004 .long _sys_llseek /* 140 */
1006 .long _sys_ni_syscall /* sys_select */
1008 .long _sys_ni_syscall /* sys_msync */
1009 .long _sys_readv /* 145 */
1012 .long _sys_fdatasync
1014 .long _sys_ni_syscall /* 150 */ /* sys_mlock */
1015 .long _sys_ni_syscall /* sys_munlock */
1016 .long _sys_ni_syscall /* sys_mlockall */
1017 .long _sys_ni_syscall /* sys_munlockall */
1018 .long _sys_sched_setparam
1019 .long _sys_sched_getparam /* 155 */
1020 .long _sys_sched_setscheduler
1021 .long _sys_sched_getscheduler
1022 .long _sys_sched_yield
1023 .long _sys_sched_get_priority_max
1024 .long _sys_sched_get_priority_min /* 160 */
1025 .long _sys_sched_rr_get_interval
1026 .long _sys_nanosleep
1027 .long _sys_ni_syscall /* sys_mremap */
1028 .long _sys_setresuid /* setresuid16 */
1029 .long _sys_getresuid /* getresuid16 */ /* 165 */
1030 .long _sys_ni_syscall /* for vm86 */
1031 .long _sys_ni_syscall /* old "query_module" */
1032 .long _sys_ni_syscall /* sys_poll */
1033 .long _sys_ni_syscall /* sys_nfsservctl */
1034 .long _sys_setresgid /* setresgid16 */ /* 170 */
1035 .long _sys_getresgid /* getresgid16 */
1037 .long _sys_rt_sigreturn
1038 .long _sys_rt_sigaction
1039 .long _sys_rt_sigprocmask /* 175 */
1040 .long _sys_rt_sigpending
1041 .long _sys_rt_sigtimedwait
1042 .long _sys_rt_sigqueueinfo
1043 .long _sys_rt_sigsuspend
1044 .long _sys_pread64 /* 180 */
1046 .long _sys_lchown /* lchown16 */
1049 .long _sys_capset /* 185 */
1050 .long _sys_sigaltstack
1052 .long _sys_ni_syscall /* streams1 */
1053 .long _sys_ni_syscall /* streams2 */
1054 .long _sys_vfork /* 190 */
1055 .long _sys_getrlimit
1057 .long _sys_truncate64
1058 .long _sys_ftruncate64
1059 .long _sys_stat64 /* 195 */
1064 .long _sys_getgid /* 200 */
1069 .long _sys_getgroups /* 205 */
1070 .long _sys_setgroups
1072 .long _sys_setresuid
1073 .long _sys_getresuid
1074 .long _sys_setresgid /* 210 */
1075 .long _sys_getresgid
1079 .long _sys_setfsuid /* 215 */
1081 .long _sys_pivot_root
1082 .long _sys_ni_syscall /* sys_mincore */
1083 .long _sys_ni_syscall /* sys_madvise */
1084 .long _sys_getdents64 /* 220 */
1086 .long _sys_ni_syscall /* reserved for TUX */
1087 .long _sys_ni_syscall
1089 .long _sys_ni_syscall /* 225 */ /* sys_readahead */
1091 .long _sys_lsetxattr
1092 .long _sys_fsetxattr
1094 .long _sys_lgetxattr /* 230 */
1095 .long _sys_fgetxattr
1096 .long _sys_listxattr
1097 .long _sys_llistxattr
1098 .long _sys_flistxattr
1099 .long _sys_removexattr /* 235 */
1100 .long _sys_lremovexattr
1101 .long _sys_fremovexattr
1103 .long _sys_sendfile64
1104 .long _sys_futex /* 240 */
1105 .long _sys_sched_setaffinity
1106 .long _sys_sched_getaffinity
1107 .long _sys_ni_syscall /* sys_set_thread_area */
1108 .long _sys_ni_syscall /* sys_get_thread_area */
1109 .long _sys_io_setup /* 245 */
1110 .long _sys_io_destroy
1111 .long _sys_io_getevents
1112 .long _sys_io_submit
1113 .long _sys_io_cancel
1114 .long _sys_ni_syscall /* 250 */ /* sys_alloc_hugepages */
1115 .long _sys_ni_syscall /* sys_freec_hugepages */
1116 .long _sys_exit_group
1117 .long _sys_lookup_dcookie
1118 .long _sys_bfin_spinlock
1119 .long _sys_epoll_create /* 255 */
1120 .long _sys_epoll_ctl
1121 .long _sys_epoll_wait
1122 .long _sys_ni_syscall /* remap_file_pages */
1123 .long _sys_set_tid_address
1124 .long _sys_timer_create /* 260 */
1125 .long _sys_timer_settime
1126 .long _sys_timer_gettime
1127 .long _sys_timer_getoverrun
1128 .long _sys_timer_delete
1129 .long _sys_clock_settime /* 265 */
1130 .long _sys_clock_gettime
1131 .long _sys_clock_getres
1132 .long _sys_clock_nanosleep
1134 .long _sys_fstatfs64 /* 270 */
1137 .long _sys_fadvise64_64
1138 .long _sys_ni_syscall /* vserver */
1139 .long _sys_ni_syscall /* 275, mbind */
1140 .long _sys_ni_syscall /* get_mempolicy */
1141 .long _sys_ni_syscall /* set_mempolicy */
1143 .long _sys_mq_unlink
1144 .long _sys_mq_timedsend /* 280 */
1145 .long _sys_mq_timedreceive
1146 .long _sys_mq_notify
1147 .long _sys_mq_getsetattr
1148 .long _sys_ni_syscall /* kexec_load */
1149 .long _sys_waitid /* 285 */
1151 .long _sys_request_key
1153 .long _sys_ioprio_set
1154 .long _sys_ioprio_get /* 290 */
1155 .long _sys_inotify_init
1156 .long _sys_inotify_add_watch
1157 .long _sys_inotify_rm_watch
1158 .long _sys_ni_syscall /* migrate_pages */
1159 .long _sys_openat /* 295 */
1163 .long _sys_futimesat
1164 .long _sys_fstatat64 /* 300 */
1168 .long _sys_symlinkat
1169 .long _sys_readlinkat /* 305 */
1171 .long _sys_faccessat
1174 .long _sys_unshare /* 310 */
1175 .long _sys_sram_alloc
1176 .long _sys_sram_free
1177 .long _sys_dma_memcpy
1179 .long _sys_bind /* 315 */
1181 .long _sys_getpeername
1182 .long _sys_getsockname
1183 .long _sys_getsockopt
1184 .long _sys_listen /* 320 */
1189 .long _sys_sendmsg /* 325 */
1191 .long _sys_setsockopt
1194 .long _sys_socketpair /* 330 */
1199 .long _sys_msgget /* 335 */
1204 .long _sys_shmdt /* 340 */
1206 .rept NR_syscalls-(.-_sys_call_table)/4
1207 .long _sys_ni_syscall
1216 _exception_stack_top:
1218 #if defined(ANOMALY_05000261)
1219 /* Used by the assembly entry point to work around an anomaly. */
1220 _last_cplb_fault_retx:
1224 * Single instructions can have multiple faults, which need to be
1225 * handled by traps.c, in irq5. We store the exception cause to ensure
1226 * we don't miss a double fault condition
1228 ENTRY(_in_ptr_excause)
1230 ENTRY(_out_ptr_excause)
1233 ENTRY(_excause_circ_buf)