970 lines
27 KiB
ArmAsm
970 lines
27 KiB
ArmAsm
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/*
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* linux/arch/cris/entry.S
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*
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* Copyright (C) 2000, 2001, 2002 Axis Communications AB
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*
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* Authors: Bjorn Wesen (bjornw@axis.com)
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*/
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/*
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* entry.S contains the system-call and fault low-level handling routines.
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*
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* NOTE: This code handles signal-recognition, which happens every time
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* after a timer-interrupt and after each system call.
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*
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* Stack layout in 'ret_from_system_call':
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* ptrace needs to have all regs on the stack.
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* if the order here is changed, it needs to be
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* updated in fork.c:copy_process, signal.c:do_signal,
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* ptrace.c and ptrace.h
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*
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*/
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#include <linux/linkage.h>
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#include <linux/sys.h>
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#include <asm/unistd.h>
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#include <arch/sv_addr_ag.h>
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#include <asm/errno.h>
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#include <asm/thread_info.h>
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#include <asm/asm-offsets.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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;; functions exported from this file
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.globl system_call
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.globl ret_from_intr
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.globl ret_from_fork
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.globl ret_from_kernel_thread
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.globl resume
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.globl multiple_interrupt
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.globl hwbreakpoint
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.globl IRQ1_interrupt
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.globl spurious_interrupt
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.globl hw_bp_trigs
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.globl mmu_bus_fault
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.globl do_sigtrap
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.globl gdb_handle_breakpoint
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.globl sys_call_table
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;; below are various parts of system_call which are not in the fast-path
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#ifdef CONFIG_PREEMPT
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; Check if preemptive kernel scheduling should be done
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_resume_kernel:
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di
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; Load current task struct
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movs.w -8192, $r0 ; THREAD_SIZE = 8192
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and.d $sp, $r0
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move.d [$r0+TI_preempt_count], $r10 ; Preemption disabled?
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bne _Rexit
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nop
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_need_resched:
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move.d [$r0+TI_flags], $r10
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btstq TIF_NEED_RESCHED, $r10 ; Check if need_resched is set
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bpl _Rexit
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nop
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; Ok, lets's do some preemptive kernel scheduling
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jsr preempt_schedule_irq
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; Load new task struct
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movs.w -8192, $r0 ; THREAD_SIZE = 8192
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and.d $sp, $r0
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; One more time (with new task)
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ba _need_resched
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nop
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#else
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#define _resume_kernel _Rexit
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#endif
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; Called at exit from fork. schedule_tail must be called to drop
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; spinlock if CONFIG_PREEMPT
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ret_from_fork:
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jsr schedule_tail
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ba ret_from_sys_call
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nop
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ret_from_kernel_thread:
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jsr schedule_tail
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move.d $r2, $r10 ; argument is here
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jsr $r1 ; call the payload
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moveq 0, $r9 ; no syscall restarts, TYVM...
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ba ret_from_sys_call
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ret_from_intr:
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;; check for resched if preemptive kernel or if we're going back to user-mode
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;; this test matches the user_regs(regs) macro
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;; we cannot simply test $dccr, because that does not necessarily
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;; reflect what mode we'll return into.
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move.d [$sp + PT_dccr], $r0; regs->dccr
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btstq 8, $r0 ; U-flag
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bpl _resume_kernel
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; Note that di below is in delay slot
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_resume_userspace:
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di ; so need_resched and sigpending don't change
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movs.w -8192, $r0 ; THREAD_SIZE == 8192
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and.d $sp, $r0
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move.d [$r0+TI_flags], $r10 ; current->work
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and.d _TIF_WORK_MASK, $r10 ; is there any work to be done on return
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bne _work_pending
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nop
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ba _Rexit
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nop
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;; The system_call is called by a BREAK instruction, which works like
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;; an interrupt call but it stores the return PC in BRP instead of IRP.
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;; Since we dont really want to have two epilogues (one for system calls
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;; and one for interrupts) we push the contents of BRP instead of IRP in the
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;; system call prologue, to make it look like an ordinary interrupt on the
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;; stackframe.
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;;
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;; Since we can't have system calls inside interrupts, it should not matter
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;; that we don't stack IRP.
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;;
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;; In r9 we have the wanted syscall number. Arguments come in r10,r11,r12,r13,mof,srp
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;;
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;; This function looks on the _surface_ like spaghetti programming, but it's
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;; really designed so that the fast-path does not force cache-loading of non-used
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;; instructions. Only the non-common cases cause the outlined code to run..
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system_call:
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;; stack-frame similar to the irq heads, which is reversed in ret_from_sys_call
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move $brp,[$sp=$sp-16]; instruction pointer and room for a fake SBFS frame
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push $srp
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push $dccr
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push $mof
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subq 14*4, $sp ; make room for r0-r13
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movem $r13, [$sp] ; push r0-r13
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push $r10 ; push orig_r10
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clear.d [$sp=$sp-4] ; frametype == 0, normal stackframe
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movs.w -ENOSYS, $r0
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move.d $r0, [$sp+PT_r10] ; put the default return value in r10 in the frame
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;; check if this process is syscall-traced
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movs.w -8192, $r0 ; THREAD_SIZE == 8192
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and.d $sp, $r0
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move.d [$r0+TI_flags], $r0
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btstq TIF_SYSCALL_TRACE, $r0
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bmi _syscall_trace_entry
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nop
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_syscall_traced:
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;; check for sanity in the requested syscall number
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cmpu.w NR_syscalls, $r9
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bcc ret_from_sys_call
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lslq 2, $r9 ; multiply by 4, in the delay slot
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;; as a bonus 7th parameter, we give the location on the stack
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;; of the register structure itself. some syscalls need this.
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push $sp
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;; the parameter carrying registers r10, r11, r12 and 13 are intact.
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;; the fifth and sixth parameters (if any) was in mof and srp
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;; respectively, and we need to put them on the stack.
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push $srp
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push $mof
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jsr [$r9+sys_call_table] ; actually do the system call
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addq 3*4, $sp ; pop the mof, srp and regs parameters
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move.d $r10, [$sp+PT_r10] ; save the return value
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moveq 1, $r9 ; "parameter" to ret_from_sys_call to show it was a sys call
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;; fall through into ret_from_sys_call to return
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ret_from_sys_call:
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;; r9 is a parameter - if >=1 we came from a syscall, if 0, from an irq
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;; get the current task-struct pointer (see top for defs)
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movs.w -8192, $r0 ; THREAD_SIZE == 8192
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and.d $sp, $r0
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di ; make sure need_resched and sigpending don't change
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move.d [$r0+TI_flags],$r1
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and.d _TIF_ALLWORK_MASK, $r1
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bne _syscall_exit_work
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nop
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_Rexit:
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;; this epilogue MUST match the prologues in multiple_interrupt, irq.h and ptregs.h
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pop $r10 ; frametype
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bne _RBFexit ; was not CRIS_FRAME_NORMAL, handle otherwise
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addq 4, $sp ; skip orig_r10, in delayslot
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movem [$sp+], $r13 ; registers r0-r13
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pop $mof ; multiply overflow register
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pop $dccr ; condition codes
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pop $srp ; subroutine return pointer
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;; now we have a 4-word SBFS frame which we do not want to restore
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;; using RBF since it was not stacked with SBFS. instead we would like to
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;; just get the PC value to restart it with, and skip the rest of
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;; the frame.
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;; Also notice that it's important to use instructions here that
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;; keep the interrupts disabled (since we've already popped DCCR)
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move [$sp=$sp+16], $p8; pop the SBFS frame from the sp
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jmpu [$sp-16] ; return through the irp field in the sbfs frame
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_RBFexit:
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movem [$sp+], $r13 ; registers r0-r13, in delay slot
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pop $mof ; multiply overflow register
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pop $dccr ; condition codes
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pop $srp ; subroutine return pointer
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rbf [$sp+] ; return by popping the CPU status
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;; We get here after doing a syscall if extra work might need to be done
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;; perform syscall exit tracing if needed
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_syscall_exit_work:
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;; $r0 contains current at this point and irq's are disabled
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move.d [$r0+TI_flags], $r1
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btstq TIF_SYSCALL_TRACE, $r1
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bpl _work_pending
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nop
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ei
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move.d $r9, $r1 ; preserve r9
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jsr do_syscall_trace
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move.d $r1, $r9
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ba _resume_userspace
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nop
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_work_pending:
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move.d [$r0+TI_flags], $r1
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btstq TIF_NEED_RESCHED, $r1
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bpl _work_notifysig ; was neither trace nor sched, must be signal/notify
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nop
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_work_resched:
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move.d $r9, $r1 ; preserve r9
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jsr schedule
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move.d $r1, $r9
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di
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move.d [$r0+TI_flags], $r1
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and.d _TIF_WORK_MASK, $r1; ignore the syscall trace counter
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beq _Rexit
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nop
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btstq TIF_NEED_RESCHED, $r1
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bmi _work_resched ; current->work.need_resched
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nop
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_work_notifysig:
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;; deal with pending signals and notify-resume requests
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move.d $r9, $r10 ; do_notify_resume syscall/irq param
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move.d $sp, $r11 ; the regs param
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move.d $r1, $r12 ; the thread_info_flags parameter
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jsr do_notify_resume
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ba _Rexit
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nop
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;; We get here as a sidetrack when we've entered a syscall with the
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;; trace-bit set. We need to call do_syscall_trace and then continue
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;; with the call.
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_syscall_trace_entry:
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;; PT_r10 in the frame contains -ENOSYS as required, at this point
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jsr do_syscall_trace
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;; now re-enter the syscall code to do the syscall itself
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;; we need to restore $r9 here to contain the wanted syscall, and
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;; the other parameter-bearing registers
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move.d [$sp+PT_r9], $r9
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move.d [$sp+PT_orig_r10], $r10 ; PT_r10 is already filled with -ENOSYS.
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move.d [$sp+PT_r11], $r11
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move.d [$sp+PT_r12], $r12
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move.d [$sp+PT_r13], $r13
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move [$sp+PT_mof], $mof
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move [$sp+PT_srp], $srp
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ba _syscall_traced
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nop
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;; resume performs the actual task-switching, by switching stack pointers
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;; input arguments: r10 = prev, r11 = next, r12 = thread offset in task struct
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;; returns old current in r10
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;;
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;; TODO: see the i386 version. The switch_to which calls resume in our version
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;; could really be an inline asm of this.
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resume:
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push $srp ; we keep the old/new PC on the stack
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add.d $r12, $r10 ; r10 = current tasks tss
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move $dccr, [$r10+THREAD_dccr]; save irq enable state
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di
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move $usp, [$r10+ THREAD_usp] ; save user-mode stackpointer
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;; See copy_thread for the reason why register R9 is saved.
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subq 10*4, $sp
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movem $r9, [$sp] ; save non-scratch registers and R9.
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move.d $sp, [$r10+THREAD_ksp] ; save the kernel stack pointer for the old task
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move.d $sp, $r10 ; return last running task in r10
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and.d -8192, $r10 ; get thread_info from stackpointer
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move.d [$r10+TI_task], $r10 ; get task
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add.d $r12, $r11 ; find the new tasks tss
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move.d [$r11+THREAD_ksp], $sp ; switch into the new stackframe by restoring kernel sp
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movem [$sp+], $r9 ; restore non-scratch registers and R9.
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move [$r11+THREAD_usp], $usp ; restore user-mode stackpointer
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move [$r11+THREAD_dccr], $dccr ; restore irq enable status
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jump [$sp+] ; restore PC
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;; This is the MMU bus fault handler.
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;; It needs to stack the CPU status and overall is different
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;; from the other interrupt handlers.
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mmu_bus_fault:
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;; For refills we try to do a quick page table lookup. If it is
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;; a real fault we let the mm subsystem handle it.
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;; the first longword in the sbfs frame was the interrupted PC
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;; which fits nicely with the "IRP" slot in pt_regs normally used to
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;; contain the return address. used by Oops to print kernel errors.
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sbfs [$sp=$sp-16] ; push the internal CPU status
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push $dccr
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di
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subq 2*4, $sp
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movem $r1, [$sp]
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move.d [R_MMU_CAUSE], $r1
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;; ETRAX 100LX TR89 bugfix: if the second half of an unaligned
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;; write causes a MMU-fault, it will not be restarted correctly.
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;; This could happen if a write crosses a page-boundary and the
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;; second page is not yet COW'ed or even loaded. The workaround
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;; is to clear the unaligned bit in the CPU status record, so
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;; that the CPU will rerun both the first and second halves of
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;; the instruction. This will not have any sideeffects unless
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;; the first half goes to any device or memory that can't be
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|
;; written twice, and which is mapped through the MMU.
|
||
|
|
;;
|
||
|
|
;; We only need to do this for writes.
|
||
|
|
btstq 8, $r1 ; Write access?
|
||
|
|
bpl 1f
|
||
|
|
nop
|
||
|
|
move.d [$sp+16], $r0 ; Clear unaligned bit in csrinstr
|
||
|
|
and.d ~(1<<5), $r0
|
||
|
|
move.d $r0, [$sp+16]
|
||
|
|
1: btstq 12, $r1 ; Refill?
|
||
|
|
bpl 2f
|
||
|
|
lsrq 24, $r1 ; Get PGD index (bit 24-31)
|
||
|
|
move.d [current_pgd], $r0 ; PGD for the current process
|
||
|
|
move.d [$r0+$r1.d], $r0 ; Get PMD
|
||
|
|
beq 2f
|
||
|
|
nop
|
||
|
|
and.w PAGE_MASK, $r0 ; Remove PMD flags
|
||
|
|
move.d [R_MMU_CAUSE], $r1
|
||
|
|
lsrq PAGE_SHIFT, $r1
|
||
|
|
and.d 0x7ff, $r1 ; Get PTE index into PGD (bit 13-23)
|
||
|
|
move.d [$r0+$r1.d], $r1 ; Get PTE
|
||
|
|
beq 2f
|
||
|
|
nop
|
||
|
|
;; Store in TLB
|
||
|
|
move.d $r1, [R_TLB_LO]
|
||
|
|
;; Return
|
||
|
|
movem [$sp+], $r1
|
||
|
|
pop $dccr
|
||
|
|
rbf [$sp+] ; return by popping the CPU status
|
||
|
|
|
||
|
|
2: ; PMD or PTE missing, let the mm subsystem fix it up.
|
||
|
|
movem [$sp+], $r1
|
||
|
|
pop $dccr
|
||
|
|
|
||
|
|
; Ok, not that easy, pass it on to the mm subsystem
|
||
|
|
; The MMU status record is now on the stack
|
||
|
|
push $srp ; make a stackframe similar to pt_regs
|
||
|
|
push $dccr
|
||
|
|
push $mof
|
||
|
|
di
|
||
|
|
subq 14*4, $sp
|
||
|
|
movem $r13, [$sp]
|
||
|
|
push $r10 ; dummy orig_r10
|
||
|
|
moveq 1, $r10
|
||
|
|
push $r10 ; frametype == 1, BUSFAULT frame type
|
||
|
|
|
||
|
|
move.d $sp, $r10 ; pt_regs argument to handle_mmu_bus_fault
|
||
|
|
|
||
|
|
jsr handle_mmu_bus_fault ; in arch/cris/arch-v10/mm/fault.c
|
||
|
|
|
||
|
|
;; now we need to return through the normal path, we cannot just
|
||
|
|
;; do the RBFexit since we might have killed off the running
|
||
|
|
;; process due to a SEGV, scheduled due to a page blocking or
|
||
|
|
;; whatever.
|
||
|
|
|
||
|
|
moveq 0, $r9 ; busfault is equivalent to an irq
|
||
|
|
|
||
|
|
ba ret_from_intr
|
||
|
|
nop
|
||
|
|
|
||
|
|
;; special handlers for breakpoint and NMI
|
||
|
|
hwbreakpoint:
|
||
|
|
push $dccr
|
||
|
|
di
|
||
|
|
push $r10
|
||
|
|
push $r11
|
||
|
|
move.d [hw_bp_trig_ptr],$r10
|
||
|
|
move $brp,$r11
|
||
|
|
move.d $r11,[$r10+]
|
||
|
|
move.d $r10,[hw_bp_trig_ptr]
|
||
|
|
1: pop $r11
|
||
|
|
pop $r10
|
||
|
|
pop $dccr
|
||
|
|
retb
|
||
|
|
nop
|
||
|
|
|
||
|
|
IRQ1_interrupt:
|
||
|
|
;; this prologue MUST match the one in irq.h and the struct in ptregs.h!!!
|
||
|
|
move $brp,[$sp=$sp-16]; instruction pointer and room for a fake SBFS frame
|
||
|
|
push $srp
|
||
|
|
push $dccr
|
||
|
|
push $mof
|
||
|
|
di
|
||
|
|
subq 14*4, $sp
|
||
|
|
movem $r13, [$sp]
|
||
|
|
push $r10 ; push orig_r10
|
||
|
|
clear.d [$sp=$sp-4] ; frametype == 0, normal frame
|
||
|
|
|
||
|
|
;; If there is a glitch on the NMI pin shorter than ~100ns
|
||
|
|
;; (i.e. non-active by the time we get here) then the nmi_pin bit
|
||
|
|
;; in R_IRQ_MASK0_RD will already be cleared. The watchdog_nmi bit
|
||
|
|
;; is cleared by us however (when feeding the watchdog), which is why
|
||
|
|
;; we use that bit to determine what brought us here.
|
||
|
|
|
||
|
|
move.d [R_IRQ_MASK0_RD], $r1 ; External NMI or watchdog?
|
||
|
|
and.d (1<<30), $r1
|
||
|
|
bne wdog
|
||
|
|
move.d $sp, $r10
|
||
|
|
jsr handle_nmi
|
||
|
|
setf m ; Enable NMI again
|
||
|
|
ba _Rexit ; Return the standard way
|
||
|
|
nop
|
||
|
|
wdog:
|
||
|
|
#if defined(CONFIG_ETRAX_WATCHDOG)
|
||
|
|
;; Check if we're waiting for reset to happen, as signalled by
|
||
|
|
;; hard_reset_now setting cause_of_death to a magic value. If so, just
|
||
|
|
;; get stuck until reset happens.
|
||
|
|
.comm cause_of_death, 4 ;; Don't declare this anywhere.
|
||
|
|
move.d [cause_of_death], $r10
|
||
|
|
cmp.d 0xbedead, $r10
|
||
|
|
_killed_by_death:
|
||
|
|
beq _killed_by_death
|
||
|
|
nop
|
||
|
|
|
||
|
|
;; We'll see this in ksymoops dumps.
|
||
|
|
Watchdog_bite:
|
||
|
|
|
||
|
|
#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
|
||
|
|
;; We just restart the watchdog here to be sure we dont get
|
||
|
|
;; hit while printing the watchdogmsg below
|
||
|
|
;; This restart is compatible with the rest of the C-code, so
|
||
|
|
;; the C-code can keep restarting the watchdog after this point.
|
||
|
|
;; The non-NICE_DOGGY code below though, disables the possibility
|
||
|
|
;; to restart since it changes the watchdog key, to avoid any
|
||
|
|
;; buggy loops etc. keeping the watchdog alive after this.
|
||
|
|
jsr reset_watchdog
|
||
|
|
#else
|
||
|
|
|
||
|
|
;; We need to extend the 3.3ms after the NMI at watchdog bite, so we have
|
||
|
|
;; time for an oops-dump over a 115k2 serial wire. Another 100ms should do.
|
||
|
|
|
||
|
|
;; Change the watchdog key to an arbitrary 3-bit value and restart the
|
||
|
|
;; watchdog.
|
||
|
|
#define WD_INIT 2
|
||
|
|
moveq IO_FIELD (R_WATCHDOG, key, WD_INIT), $r10
|
||
|
|
move.d R_WATCHDOG, $r11
|
||
|
|
|
||
|
|
move.d $r10, [$r11]
|
||
|
|
moveq IO_FIELD (R_WATCHDOG, key, \
|
||
|
|
IO_EXTRACT (R_WATCHDOG, key, \
|
||
|
|
IO_MASK (R_WATCHDOG, key)) \
|
||
|
|
^ WD_INIT) \
|
||
|
|
| IO_STATE (R_WATCHDOG, enable, start), $r10
|
||
|
|
move.d $r10, [$r11]
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
;; Note that we don't do "setf m" here (or after two necessary NOPs),
|
||
|
|
;; since *not* doing that saves us from re-entrancy checks. We don't want
|
||
|
|
;; to get here again due to possible subsequent NMIs; we want the watchdog
|
||
|
|
;; to reset us.
|
||
|
|
|
||
|
|
move.d _watchdogmsg,$r10
|
||
|
|
jsr printk
|
||
|
|
|
||
|
|
move.d $sp, $r10
|
||
|
|
jsr watchdog_bite_hook
|
||
|
|
|
||
|
|
;; This nop is here so we see the "Watchdog_bite" label in ksymoops dumps
|
||
|
|
;; rather than "spurious_interrupt".
|
||
|
|
nop
|
||
|
|
;; At this point we drop down into spurious_interrupt, which will do a
|
||
|
|
;; hard reset.
|
||
|
|
|
||
|
|
.section .rodata,"a"
|
||
|
|
_watchdogmsg:
|
||
|
|
.ascii "Oops: bitten by watchdog\n\0"
|
||
|
|
.previous
|
||
|
|
|
||
|
|
#endif /* CONFIG_ETRAX_WATCHDOG */
|
||
|
|
|
||
|
|
spurious_interrupt:
|
||
|
|
di
|
||
|
|
jump hard_reset_now
|
||
|
|
|
||
|
|
;; this handles the case when multiple interrupts arrive at the same time
|
||
|
|
;; we jump to the first set interrupt bit in a priority fashion
|
||
|
|
;; the hardware will call the unserved interrupts after the handler finishes
|
||
|
|
|
||
|
|
multiple_interrupt:
|
||
|
|
;; this prologue MUST match the one in irq.h and the struct in ptregs.h!!!
|
||
|
|
move $irp,[$sp=$sp-16]; instruction pointer and room for a fake SBFS frame
|
||
|
|
push $srp
|
||
|
|
push $dccr
|
||
|
|
push $mof
|
||
|
|
di
|
||
|
|
subq 14*4, $sp
|
||
|
|
movem $r13, [$sp]
|
||
|
|
push $r10 ; push orig_r10
|
||
|
|
clear.d [$sp=$sp-4] ; frametype == 0, normal frame
|
||
|
|
|
||
|
|
move.d $sp, $r10
|
||
|
|
jsr do_multiple_IRQ
|
||
|
|
|
||
|
|
jump ret_from_intr
|
||
|
|
|
||
|
|
do_sigtrap:
|
||
|
|
;;
|
||
|
|
;; SIGTRAP the process that executed the break instruction.
|
||
|
|
;; Make a frame that Rexit in entry.S expects.
|
||
|
|
;;
|
||
|
|
move $brp, [$sp=$sp-16] ; Push BRP while faking a cpu status record.
|
||
|
|
push $srp ; Push subroutine return pointer.
|
||
|
|
push $dccr ; Push condition codes.
|
||
|
|
push $mof ; Push multiply overflow reg.
|
||
|
|
di ; Need to disable irq's at this point.
|
||
|
|
subq 14*4, $sp ; Make room for r0-r13.
|
||
|
|
movem $r13, [$sp] ; Push the r0-r13 registers.
|
||
|
|
push $r10 ; Push orig_r10.
|
||
|
|
clear.d [$sp=$sp-4] ; Frametype - this is a normal stackframe.
|
||
|
|
|
||
|
|
movs.w -8192,$r9 ; THREAD_SIZE == 8192
|
||
|
|
and.d $sp, $r9
|
||
|
|
move.d [$r9+TI_task], $r10
|
||
|
|
move.d [$r10+TASK_pid], $r10 ; current->pid as arg1.
|
||
|
|
moveq 5, $r11 ; SIGTRAP as arg2.
|
||
|
|
jsr sys_kill
|
||
|
|
jump ret_from_intr ; Use the return routine for interrupts.
|
||
|
|
|
||
|
|
gdb_handle_breakpoint:
|
||
|
|
push $dccr
|
||
|
|
push $r0
|
||
|
|
#ifdef CONFIG_ETRAX_KGDB
|
||
|
|
move $dccr, $r0 ; U-flag not affected by previous insns.
|
||
|
|
btstq 8, $r0 ; Test the U-flag.
|
||
|
|
bmi _ugdb_handle_breakpoint ; Go to user mode debugging.
|
||
|
|
nop ; Empty delay slot (cannot pop r0 here).
|
||
|
|
pop $r0 ; Restore r0.
|
||
|
|
ba kgdb_handle_breakpoint ; Go to kernel debugging.
|
||
|
|
pop $dccr ; Restore dccr in delay slot.
|
||
|
|
#endif
|
||
|
|
|
||
|
|
_ugdb_handle_breakpoint:
|
||
|
|
move $brp, $r0 ; Use r0 temporarily for calculation.
|
||
|
|
subq 2, $r0 ; Set to address of previous instruction.
|
||
|
|
move $r0, $brp
|
||
|
|
pop $r0 ; Restore r0.
|
||
|
|
ba do_sigtrap ; SIGTRAP the offending process.
|
||
|
|
pop $dccr ; Restore dccr in delay slot.
|
||
|
|
|
||
|
|
.data
|
||
|
|
|
||
|
|
hw_bp_trigs:
|
||
|
|
.space 64*4
|
||
|
|
hw_bp_trig_ptr:
|
||
|
|
.dword hw_bp_trigs
|
||
|
|
|
||
|
|
.section .rodata,"a"
|
||
|
|
sys_call_table:
|
||
|
|
.long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */
|
||
|
|
.long sys_exit
|
||
|
|
.long sys_fork
|
||
|
|
.long sys_read
|
||
|
|
.long sys_write
|
||
|
|
.long sys_open /* 5 */
|
||
|
|
.long sys_close
|
||
|
|
.long sys_waitpid
|
||
|
|
.long sys_creat
|
||
|
|
.long sys_link
|
||
|
|
.long sys_unlink /* 10 */
|
||
|
|
.long sys_execve
|
||
|
|
.long sys_chdir
|
||
|
|
.long sys_time
|
||
|
|
.long sys_mknod
|
||
|
|
.long sys_chmod /* 15 */
|
||
|
|
.long sys_lchown16
|
||
|
|
.long sys_ni_syscall /* old break syscall holder */
|
||
|
|
.long sys_stat
|
||
|
|
.long sys_lseek
|
||
|
|
.long sys_getpid /* 20 */
|
||
|
|
.long sys_mount
|
||
|
|
.long sys_oldumount
|
||
|
|
.long sys_setuid16
|
||
|
|
.long sys_getuid16
|
||
|
|
.long sys_stime /* 25 */
|
||
|
|
.long sys_ptrace
|
||
|
|
.long sys_alarm
|
||
|
|
.long sys_fstat
|
||
|
|
.long sys_pause
|
||
|
|
.long sys_utime /* 30 */
|
||
|
|
.long sys_ni_syscall /* old stty syscall holder */
|
||
|
|
.long sys_ni_syscall /* old gtty syscall holder */
|
||
|
|
.long sys_access
|
||
|
|
.long sys_nice
|
||
|
|
.long sys_ni_syscall /* 35 old ftime syscall holder */
|
||
|
|
.long sys_sync
|
||
|
|
.long sys_kill
|
||
|
|
.long sys_rename
|
||
|
|
.long sys_mkdir
|
||
|
|
.long sys_rmdir /* 40 */
|
||
|
|
.long sys_dup
|
||
|
|
.long sys_pipe
|
||
|
|
.long sys_times
|
||
|
|
.long sys_ni_syscall /* old prof syscall holder */
|
||
|
|
.long sys_brk /* 45 */
|
||
|
|
.long sys_setgid16
|
||
|
|
.long sys_getgid16
|
||
|
|
.long sys_signal
|
||
|
|
.long sys_geteuid16
|
||
|
|
.long sys_getegid16 /* 50 */
|
||
|
|
.long sys_acct
|
||
|
|
.long sys_umount /* recycled never used phys( */
|
||
|
|
.long sys_ni_syscall /* old lock syscall holder */
|
||
|
|
.long sys_ioctl
|
||
|
|
.long sys_fcntl /* 55 */
|
||
|
|
.long sys_ni_syscall /* old mpx syscall holder */
|
||
|
|
.long sys_setpgid
|
||
|
|
.long sys_ni_syscall /* old ulimit syscall holder */
|
||
|
|
.long sys_ni_syscall /* old sys_olduname holder */
|
||
|
|
.long sys_umask /* 60 */
|
||
|
|
.long sys_chroot
|
||
|
|
.long sys_ustat
|
||
|
|
.long sys_dup2
|
||
|
|
.long sys_getppid
|
||
|
|
.long sys_getpgrp /* 65 */
|
||
|
|
.long sys_setsid
|
||
|
|
.long sys_sigaction
|
||
|
|
.long sys_sgetmask
|
||
|
|
.long sys_ssetmask
|
||
|
|
.long sys_setreuid16 /* 70 */
|
||
|
|
.long sys_setregid16
|
||
|
|
.long sys_sigsuspend
|
||
|
|
.long sys_sigpending
|
||
|
|
.long sys_sethostname
|
||
|
|
.long sys_setrlimit /* 75 */
|
||
|
|
.long sys_old_getrlimit
|
||
|
|
.long sys_getrusage
|
||
|
|
.long sys_gettimeofday
|
||
|
|
.long sys_settimeofday
|
||
|
|
.long sys_getgroups16 /* 80 */
|
||
|
|
.long sys_setgroups16
|
||
|
|
.long sys_select /* was old_select in Linux/E100 */
|
||
|
|
.long sys_symlink
|
||
|
|
.long sys_lstat
|
||
|
|
.long sys_readlink /* 85 */
|
||
|
|
.long sys_uselib
|
||
|
|
.long sys_swapon
|
||
|
|
.long sys_reboot
|
||
|
|
.long sys_old_readdir
|
||
|
|
.long sys_old_mmap /* 90 */
|
||
|
|
.long sys_munmap
|
||
|
|
.long sys_truncate
|
||
|
|
.long sys_ftruncate
|
||
|
|
.long sys_fchmod
|
||
|
|
.long sys_fchown16 /* 95 */
|
||
|
|
.long sys_getpriority
|
||
|
|
.long sys_setpriority
|
||
|
|
.long sys_ni_syscall /* old profil syscall holder */
|
||
|
|
.long sys_statfs
|
||
|
|
.long sys_fstatfs /* 100 */
|
||
|
|
.long sys_ni_syscall /* sys_ioperm in i386 */
|
||
|
|
.long sys_socketcall
|
||
|
|
.long sys_syslog
|
||
|
|
.long sys_setitimer
|
||
|
|
.long sys_getitimer /* 105 */
|
||
|
|
.long sys_newstat
|
||
|
|
.long sys_newlstat
|
||
|
|
.long sys_newfstat
|
||
|
|
.long sys_ni_syscall /* old sys_uname holder */
|
||
|
|
.long sys_ni_syscall /* 110 */ /* sys_iopl in i386 */
|
||
|
|
.long sys_vhangup
|
||
|
|
.long sys_ni_syscall /* old "idle" system call */
|
||
|
|
.long sys_ni_syscall /* vm86old in i386 */
|
||
|
|
.long sys_wait4
|
||
|
|
.long sys_swapoff /* 115 */
|
||
|
|
.long sys_sysinfo
|
||
|
|
.long sys_ipc
|
||
|
|
.long sys_fsync
|
||
|
|
.long sys_sigreturn
|
||
|
|
.long sys_clone /* 120 */
|
||
|
|
.long sys_setdomainname
|
||
|
|
.long sys_newuname
|
||
|
|
.long sys_ni_syscall /* sys_modify_ldt */
|
||
|
|
.long sys_adjtimex
|
||
|
|
.long sys_mprotect /* 125 */
|
||
|
|
.long sys_sigprocmask
|
||
|
|
.long sys_ni_syscall /* old "create_module" */
|
||
|
|
.long sys_init_module
|
||
|
|
.long sys_delete_module
|
||
|
|
.long sys_ni_syscall /* 130: old "get_kernel_syms" */
|
||
|
|
.long sys_quotactl
|
||
|
|
.long sys_getpgid
|
||
|
|
.long sys_fchdir
|
||
|
|
.long sys_bdflush
|
||
|
|
.long sys_sysfs /* 135 */
|
||
|
|
.long sys_personality
|
||
|
|
.long sys_ni_syscall /* for afs_syscall */
|
||
|
|
.long sys_setfsuid16
|
||
|
|
.long sys_setfsgid16
|
||
|
|
.long sys_llseek /* 140 */
|
||
|
|
.long sys_getdents
|
||
|
|
.long sys_select
|
||
|
|
.long sys_flock
|
||
|
|
.long sys_msync
|
||
|
|
.long sys_readv /* 145 */
|
||
|
|
.long sys_writev
|
||
|
|
.long sys_getsid
|
||
|
|
.long sys_fdatasync
|
||
|
|
.long sys_sysctl
|
||
|
|
.long sys_mlock /* 150 */
|
||
|
|
.long sys_munlock
|
||
|
|
.long sys_mlockall
|
||
|
|
.long sys_munlockall
|
||
|
|
.long sys_sched_setparam
|
||
|
|
.long sys_sched_getparam /* 155 */
|
||
|
|
.long sys_sched_setscheduler
|
||
|
|
.long sys_sched_getscheduler
|
||
|
|
.long sys_sched_yield
|
||
|
|
.long sys_sched_get_priority_max
|
||
|
|
.long sys_sched_get_priority_min /* 160 */
|
||
|
|
.long sys_sched_rr_get_interval
|
||
|
|
.long sys_nanosleep
|
||
|
|
.long sys_mremap
|
||
|
|
.long sys_setresuid16
|
||
|
|
.long sys_getresuid16 /* 165 */
|
||
|
|
.long sys_ni_syscall /* sys_vm86 */
|
||
|
|
.long sys_ni_syscall /* Old sys_query_module */
|
||
|
|
.long sys_poll
|
||
|
|
.long sys_ni_syscall /* old nfsservctl */
|
||
|
|
.long sys_setresgid16 /* 170 */
|
||
|
|
.long sys_getresgid16
|
||
|
|
.long sys_prctl
|
||
|
|
.long sys_rt_sigreturn
|
||
|
|
.long sys_rt_sigaction
|
||
|
|
.long sys_rt_sigprocmask /* 175 */
|
||
|
|
.long sys_rt_sigpending
|
||
|
|
.long sys_rt_sigtimedwait
|
||
|
|
.long sys_rt_sigqueueinfo
|
||
|
|
.long sys_rt_sigsuspend
|
||
|
|
.long sys_pread64 /* 180 */
|
||
|
|
.long sys_pwrite64
|
||
|
|
.long sys_chown16
|
||
|
|
.long sys_getcwd
|
||
|
|
.long sys_capget
|
||
|
|
.long sys_capset /* 185 */
|
||
|
|
.long sys_sigaltstack
|
||
|
|
.long sys_sendfile
|
||
|
|
.long sys_ni_syscall /* streams1 */
|
||
|
|
.long sys_ni_syscall /* streams2 */
|
||
|
|
.long sys_vfork /* 190 */
|
||
|
|
.long sys_getrlimit
|
||
|
|
.long sys_mmap2 /* mmap_pgoff */
|
||
|
|
.long sys_truncate64
|
||
|
|
.long sys_ftruncate64
|
||
|
|
.long sys_stat64 /* 195 */
|
||
|
|
.long sys_lstat64
|
||
|
|
.long sys_fstat64
|
||
|
|
.long sys_lchown
|
||
|
|
.long sys_getuid
|
||
|
|
.long sys_getgid /* 200 */
|
||
|
|
.long sys_geteuid
|
||
|
|
.long sys_getegid
|
||
|
|
.long sys_setreuid
|
||
|
|
.long sys_setregid
|
||
|
|
.long sys_getgroups /* 205 */
|
||
|
|
.long sys_setgroups
|
||
|
|
.long sys_fchown
|
||
|
|
.long sys_setresuid
|
||
|
|
.long sys_getresuid
|
||
|
|
.long sys_setresgid /* 210 */
|
||
|
|
.long sys_getresgid
|
||
|
|
.long sys_chown
|
||
|
|
.long sys_setuid
|
||
|
|
.long sys_setgid
|
||
|
|
.long sys_setfsuid /* 215 */
|
||
|
|
.long sys_setfsgid
|
||
|
|
.long sys_pivot_root
|
||
|
|
.long sys_mincore
|
||
|
|
.long sys_madvise
|
||
|
|
.long sys_getdents64 /* 220 */
|
||
|
|
.long sys_fcntl64
|
||
|
|
.long sys_ni_syscall /* reserved for TUX */
|
||
|
|
.long sys_ni_syscall
|
||
|
|
.long sys_gettid
|
||
|
|
.long sys_readahead /* 225 */
|
||
|
|
.long sys_setxattr
|
||
|
|
.long sys_lsetxattr
|
||
|
|
.long sys_fsetxattr
|
||
|
|
.long sys_getxattr
|
||
|
|
.long sys_lgetxattr /* 230 */
|
||
|
|
.long sys_fgetxattr
|
||
|
|
.long sys_listxattr
|
||
|
|
.long sys_llistxattr
|
||
|
|
.long sys_flistxattr
|
||
|
|
.long sys_removexattr /* 235 */
|
||
|
|
.long sys_lremovexattr
|
||
|
|
.long sys_fremovexattr
|
||
|
|
.long sys_tkill
|
||
|
|
.long sys_sendfile64
|
||
|
|
.long sys_futex /* 240 */
|
||
|
|
.long sys_sched_setaffinity
|
||
|
|
.long sys_sched_getaffinity
|
||
|
|
.long sys_ni_syscall /* sys_set_thread_area */
|
||
|
|
.long sys_ni_syscall /* sys_get_thread_area */
|
||
|
|
.long sys_io_setup /* 245 */
|
||
|
|
.long sys_io_destroy
|
||
|
|
.long sys_io_getevents
|
||
|
|
.long sys_io_submit
|
||
|
|
.long sys_io_cancel
|
||
|
|
.long sys_fadvise64 /* 250 */
|
||
|
|
.long sys_ni_syscall
|
||
|
|
.long sys_exit_group
|
||
|
|
.long sys_lookup_dcookie
|
||
|
|
.long sys_epoll_create
|
||
|
|
.long sys_epoll_ctl /* 255 */
|
||
|
|
.long sys_epoll_wait
|
||
|
|
.long sys_remap_file_pages
|
||
|
|
.long sys_set_tid_address
|
||
|
|
.long sys_timer_create
|
||
|
|
.long sys_timer_settime /* 260 */
|
||
|
|
.long sys_timer_gettime
|
||
|
|
.long sys_timer_getoverrun
|
||
|
|
.long sys_timer_delete
|
||
|
|
.long sys_clock_settime
|
||
|
|
.long sys_clock_gettime /* 265 */
|
||
|
|
.long sys_clock_getres
|
||
|
|
.long sys_clock_nanosleep
|
||
|
|
.long sys_statfs64
|
||
|
|
.long sys_fstatfs64
|
||
|
|
.long sys_tgkill /* 270 */
|
||
|
|
.long sys_utimes
|
||
|
|
.long sys_fadvise64_64
|
||
|
|
.long sys_ni_syscall /* sys_vserver */
|
||
|
|
.long sys_ni_syscall /* sys_mbind */
|
||
|
|
.long sys_ni_syscall /* 275 sys_get_mempolicy */
|
||
|
|
.long sys_ni_syscall /* sys_set_mempolicy */
|
||
|
|
.long sys_mq_open
|
||
|
|
.long sys_mq_unlink
|
||
|
|
.long sys_mq_timedsend
|
||
|
|
.long sys_mq_timedreceive /* 280 */
|
||
|
|
.long sys_mq_notify
|
||
|
|
.long sys_mq_getsetattr
|
||
|
|
.long sys_ni_syscall
|
||
|
|
.long sys_waitid
|
||
|
|
.long sys_ni_syscall /* 285 */ /* available */
|
||
|
|
.long sys_add_key
|
||
|
|
.long sys_request_key
|
||
|
|
.long sys_keyctl
|
||
|
|
.long sys_ioprio_set
|
||
|
|
.long sys_ioprio_get /* 290 */
|
||
|
|
.long sys_inotify_init
|
||
|
|
.long sys_inotify_add_watch
|
||
|
|
.long sys_inotify_rm_watch
|
||
|
|
.long sys_migrate_pages
|
||
|
|
.long sys_openat /* 295 */
|
||
|
|
.long sys_mkdirat
|
||
|
|
.long sys_mknodat
|
||
|
|
.long sys_fchownat
|
||
|
|
.long sys_futimesat
|
||
|
|
.long sys_fstatat64 /* 300 */
|
||
|
|
.long sys_unlinkat
|
||
|
|
.long sys_renameat
|
||
|
|
.long sys_linkat
|
||
|
|
.long sys_symlinkat
|
||
|
|
.long sys_readlinkat /* 305 */
|
||
|
|
.long sys_fchmodat
|
||
|
|
.long sys_faccessat
|
||
|
|
.long sys_pselect6
|
||
|
|
.long sys_ppoll
|
||
|
|
.long sys_unshare /* 310 */
|
||
|
|
.long sys_set_robust_list
|
||
|
|
.long sys_get_robust_list
|
||
|
|
.long sys_splice
|
||
|
|
.long sys_sync_file_range
|
||
|
|
.long sys_tee /* 315 */
|
||
|
|
.long sys_vmsplice
|
||
|
|
.long sys_move_pages
|
||
|
|
.long sys_getcpu
|
||
|
|
.long sys_epoll_pwait
|
||
|
|
.long sys_utimensat /* 320 */
|
||
|
|
.long sys_signalfd
|
||
|
|
.long sys_timerfd_create
|
||
|
|
.long sys_eventfd
|
||
|
|
.long sys_fallocate
|
||
|
|
.long sys_timerfd_settime /* 325 */
|
||
|
|
.long sys_timerfd_gettime
|
||
|
|
.long sys_signalfd4
|
||
|
|
.long sys_eventfd2
|
||
|
|
.long sys_epoll_create1
|
||
|
|
.long sys_dup3 /* 330 */
|
||
|
|
.long sys_pipe2
|
||
|
|
.long sys_inotify_init1
|
||
|
|
.long sys_preadv
|
||
|
|
.long sys_pwritev
|
||
|
|
.long sys_setns /* 335 */
|
||
|
|
.long sys_name_to_handle_at
|
||
|
|
.long sys_open_by_handle_at
|
||
|
|
.long sys_rt_tgsigqueueinfo
|
||
|
|
.long sys_perf_event_open
|
||
|
|
.long sys_recvmmsg /* 340 */
|
||
|
|
.long sys_accept4
|
||
|
|
.long sys_fanotify_init
|
||
|
|
.long sys_fanotify_mark
|
||
|
|
.long sys_prlimit64
|
||
|
|
.long sys_clock_adjtime /* 345 */
|
||
|
|
.long sys_syncfs
|
||
|
|
.long sys_sendmmsg
|
||
|
|
.long sys_process_vm_readv
|
||
|
|
.long sys_process_vm_writev
|
||
|
|
.long sys_kcmp /* 350 */
|
||
|
|
.long sys_finit_module
|
||
|
|
|
||
|
|
/*
|
||
|
|
* NOTE!! This doesn't have to be exact - we just have
|
||
|
|
* to make sure we have _enough_ of the "sys_ni_syscall"
|
||
|
|
* entries. Don't panic if you notice that this hasn't
|
||
|
|
* been shrunk every time we add a new system call.
|
||
|
|
*/
|
||
|
|
|
||
|
|
.rept NR_syscalls-(.-sys_call_table)/4
|
||
|
|
.long sys_ni_syscall
|
||
|
|
.endr
|
||
|
|
|