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/* -*- mode: asm -*-
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*
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* linux/arch/m68knommu/platform/5206/entry.S
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*
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* Copyright (C) 1999 Greg Ungerer (gerg@moreton.com.au)
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* Copyright (C) 1998 D. Jeff Dionne ,
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* Kenneth Albanowski ,
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* The Silver Hammer Group, Ltd.
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*
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* Based on:
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*
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* linux/arch/m68k/kernel/entry.S
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*
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* Copyright (C) 1991, 1992 Linus Torvalds
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file README.legal in the main directory of this archive
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* for more details.
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*
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* Linux/m68k support by Hamish Macdonald
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*
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* 68060 fixes by Jesper Skov
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* ColdFire support by Greg Ungerer (gerg@moreton.com.au)
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* 5307 fixes by David W. Miller
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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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* This also contains the timer-interrupt handler, as well as all interrupts
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* and faults that can result in a task-switch.
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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_exception':
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*
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* This allows access to the syscall arguments in registers d1-d5
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*
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* 0(sp) - d1
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* 4(sp) - d2
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* 8(sp) - d3
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* C(sp) - d4
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* 10(sp) - d5
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* 14(sp) - a0
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* 18(sp) - a1
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* 1C(sp) - d0
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* 20(sp) - orig_d0
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* 24(sp) - stack adjustment
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* 28(sp) - format & vector }
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* 2A(sp) - sr } different to m68k
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* 2C(sp) - pc }
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*/
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#include
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#include
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#include
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#include
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#include
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LENOSYS = 38
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/*
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* these are offsets into the task-struct
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*/
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LTASK_STATE = 0
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LTASK_COUNTER = 4
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LTASK_PRIORITY = 8
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LTASK_SIGNAL = 12
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LTASK_BLOCKED = 16
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LTASK_FLAGS = 20
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/* the following macro is used when enabling interrupts */
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#define ALLOWINT 0xf8ff
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#define MAX_NOINT_IPL 0
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LD0 = 0x1C
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LORIG_D0 = 0x20
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LSR = 0x2a
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LFORMATVEC = 0x28
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LPC = 0x2c
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/*
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* This defines the normal kernel pt-regs layout.
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*
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* regs are a2-a6 and d6-d7 preserved by C code
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* the kernel doesn't mess with usp unless it needs to
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*
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* This is made a little more tricky on the ColdFire. There is no
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* separate kernel and user stack pointers. Need to artificially
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* construct a usp in software... When doing this we need to disable
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* interrupts, otherwise bad things could happen.
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*/
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#define SAVE_ALL \
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move #0x2700,%sr; /* disable intrs */ \
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btst #5,%sp@(2); /* from user? */ \
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bnes 1f; /* no, skip */ \
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addl #8,%sp; /* remove exception */ \
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movel %sp,sw_usp; /* save user sp */ \
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movel sw_ksp,%sp; /* kernel sp */ \
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subql #8,%sp; /* room for exception */\
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clrl %sp@-; /* stk_adj */ \
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movel %d0,%sp@-; /* orig d0 */ \
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movel %d0,%sp@-; /* d0 */ \
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subl #28,%sp; /* space for 7 regs */ \
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moveml %d1-%d5/%a0-%a1,%sp@; \
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movel sw_usp,%a0; /* get usp */ \
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moveml %a0@(-8),%d1-%d2; /* get exception */ \
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moveml %d1-%d2,%sp@(LFORMATVEC); /* copy exception */ \
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bra 2f; \
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1: \
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clrl %sp@-; /* stk_adj */ \
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movel %d0,%sp@-; /* orig d0 */ \
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movel %d0,%sp@-; /* d0 */ \
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subl #28,%sp; /* space for 7 regs */ \
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moveml %d1-%d5/%a0-%a1,%sp@; \
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2:
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#define RESTORE_ALL \
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btst #5,%sp@(LSR); /* going user? */ \
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bnes 1f; /* no, skip */ \
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move #0x2700,%sr; /* disable intrs */ \
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movel sw_usp,%a0; /* get usp */ \
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moveml %sp@(LFORMATVEC),%d1-%d2; /* copy exception */ \
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moveml %d1-%d2,%a0@(-8); \
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moveml %sp@,%d1-%d5/%a0-%a1; \
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addl #28,%sp; /* space for 7 regs */ \
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movel %sp@+,%d0; \
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addql #4,%sp; /* orig d0 */ \
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addl %sp@+,%sp; /* stk adj */ \
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addql #8,%sp; /* remove exception */ \
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movel %sp,sw_ksp; /* save ksp */ \
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movel sw_usp,%sp; /* restore usp */ \
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subql #8,%sp; /* set exception */ \
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rte; \
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1: \
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moveml %sp@,%d1-%d5/%a0-%a1; \
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addl #28,%sp; /* space for 7 regs */ \
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movel %sp@+,%d0; \
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addql #4,%sp; /* orig d0 */ \
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addl %sp@+,%sp; /* stk adj */ \
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rte
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/*
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* Quick exception save, use current stack only.
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*/
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#define SAVE_LOCAL \
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move #0x2700,%sr; /* disable intrs */ \
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clrl %sp@-; /* stk_adj */ \
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movel %d0,%sp@-; /* orig d0 */ \
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movel %d0,%sp@-; /* d0 */ \
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subl #28,%sp; /* space for 7 regs */ \
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moveml %d1-%d5/%a0-%a1,%sp@;
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#define RESTORE_LOCAL \
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moveml %sp@,%d1-%d5/%a0-%a1; \
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addl #28,%sp; /* space for 7 regs */ \
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movel %sp@+,%d0; \
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addql #4,%sp; /* orig d0 */ \
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addl %sp@+,%sp; /* stk adj */ \
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rte
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#define SWITCH_STACK_SIZE (7*4+4) /* includes return address */
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#define SAVE_SWITCH_STACK \
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subl #28,%sp; /* 7 regs */ \
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moveml %a2-%a6/%d6-%d7,%sp@
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#define RESTORE_SWITCH_STACK \
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moveml %sp@,%a2-%a6/%d6-%d7; \
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addl #28,%sp /* 7 regs */
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/*
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* Software copy of the user and kernel stack pointers... Ugh...
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* Need these to get around ColdFire not having separate kernel
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* and user stack pointers.
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*/
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.globl SYMBOL_NAME(sw_usp)
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.globl SYMBOL_NAME(sw_ksp)
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.data
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sw_ksp:
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.long 0
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sw_usp:
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.long 0
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.text
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.globl SYMBOL_NAME(buserr)
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.globl SYMBOL_NAME(trap)
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.globl SYMBOL_NAME(system_call)
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.globl SYMBOL_NAME(resume), SYMBOL_NAME(ret_from_exception)
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.globl SYMBOL_NAME(ret_from_signal)
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.globl SYMBOL_NAME(sys_call_table)
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.globl SYMBOL_NAME(sys_fork), SYMBOL_NAME(sys_clone)
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.globl SYMBOL_NAME(ret_from_interrupt)
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.globl SYMBOL_NAME(intrhandler)
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.globl SYMBOL_NAME(fasthandler)
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.text
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ENTRY(buserr)
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SAVE_ALL
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moveq #-1,%d0
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movel %d0,%sp@(LORIG_D0) | a -1 in the ORIG_D0 field
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| signifies that the stack frame
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| is NOT for syscall
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movel %sp,%sp@- | stack frame pointer argument
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jsr SYMBOL_NAME(buserr_c)
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addql #4,%sp
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jra SYMBOL_NAME(ret_from_exception)
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ENTRY(reschedule)
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| save top of frame
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pea %sp@
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jbsr SYMBOL_NAME(set_esp0)
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addql #4,%sp
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pea SYMBOL_NAME(ret_from_exception)
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jmp SYMBOL_NAME(schedule)
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ENTRY(system_call)
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SAVE_ALL
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move #0x2000,%sr; | enable intrs again
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| 232 |
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movel #-LENOSYS,%d2
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movel %d2,LD0(%sp) | default return value in d0
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| original D0 is in orig_d0
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movel %d0,%d2
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| 237 |
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| save top of frame
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| 238 |
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pea %sp@
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jbsr SYMBOL_NAME(set_esp0)
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addql #4,%sp
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| 242 |
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cmpl #NR_syscalls,%d2
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jcc SYMBOL_NAME(ret_from_exception)
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lea SYMBOL_NAME(sys_call_table),%a0
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lsll #2,%d2 | movel %a0@(%d2:l:4),%d3
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movel %a0@(%d2),%d3
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| 247 |
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jeq SYMBOL_NAME(ret_from_exception)
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| 248 |
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lsrl #2,%d2
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| 249 |
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movel SYMBOL_NAME(current_set),%a0
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| 250 |
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btst #5,%a0@(LTASK_FLAGS+3) | PF_TRACESYS
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| 251 |
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bnes 1f
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| 252 |
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movel %d3,%a0
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| 253 |
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jbsr %a0@
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| 254 |
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movel %d0,%sp@(LD0) | save the return value
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| 255 |
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jra SYMBOL_NAME(ret_from_exception)
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| 256 |
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1:
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| 257 |
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subql #4,%sp
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| 258 |
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SAVE_SWITCH_STACK
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| 259 |
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jbsr SYMBOL_NAME(syscall_trace)
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| 260 |
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RESTORE_SWITCH_STACK
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| 261 |
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addql #4,%sp
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| 262 |
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movel %d3,%a0
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| 263 |
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jbsr %a0@
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| 264 |
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movel %d0,%sp@(LD0) | save the return value
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| 265 |
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subql #4,%sp | dummy return address
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| 266 |
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SAVE_SWITCH_STACK
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| 267 |
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jbsr SYMBOL_NAME(syscall_trace)
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| 268 |
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| 269 |
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SYMBOL_NAME_LABEL(ret_from_signal)
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| 270 |
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RESTORE_SWITCH_STACK
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| 271 |
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addql #4,%sp
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| 272 |
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| 273 |
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SYMBOL_NAME_LABEL(ret_from_exception)
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| 274 |
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btst #5,%sp@(LSR) | check if returning to kernel
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| 275 |
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bnes 2f | if so, skip resched, signals
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| 276 |
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tstl SYMBOL_NAME(need_resched)
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| 277 |
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jne SYMBOL_NAME(reschedule)
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| 278 |
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movel SYMBOL_NAME(current_set),%a0
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| 279 |
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cmpl #SYMBOL_NAME(task),%a0 | task[0] cannot have signals
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| 280 |
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jeq 2f
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| 281 |
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bclr #5,%a0@(LTASK_FLAGS+1) | check for delayed trace
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| 282 |
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jeq 1f
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| 283 |
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bclr #7,%sp@(LSR) | clear trace bit in SR
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| 284 |
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pea 1 | send SIGTRAP
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| 285 |
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movel %a0,%sp@-
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| 286 |
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pea 5
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| 287 |
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jbsr SYMBOL_NAME(send_sig)
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| 288 |
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addql #8,%sp
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| 289 |
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addql #4,%sp
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| 290 |
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movel SYMBOL_NAME(current_set),%a0
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| 291 |
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| 292 |
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1:
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| 293 |
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tstl %a0@(LTASK_STATE) | state
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| 294 |
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jne SYMBOL_NAME(reschedule)
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| 295 |
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tstl %a0@(LTASK_COUNTER) | counter
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| 296 |
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jeq SYMBOL_NAME(reschedule)
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| 297 |
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| 298 |
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movel %a0@(LTASK_BLOCKED),%d0
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| 299 |
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movel %d0,%d1 | save blocked in d1 for sig handling
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| 300 |
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notl %d0
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| 301 |
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btst #4,%a0@(LTASK_FLAGS+3) | PF_PTRACED
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| 302 |
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jeq 1f
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| 303 |
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moveq #-1,%d0 | let the debugger see all signals
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| 304 |
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1: andl %a0@(LTASK_SIGNAL),%d0
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| 305 |
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jne Lsignal_return
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| 306 |
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2: RESTORE_ALL | Does RTE
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| 307 |
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| 308 |
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Lsignal_return:
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| 309 |
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subql #4,%sp | dummy return address
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| 310 |
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SAVE_SWITCH_STACK
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| 311 |
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pea %sp@(SWITCH_STACK_SIZE)
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| 312 |
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movel %d1,%sp@-
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| 313 |
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jsr SYMBOL_NAME(do_signal)
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| 314 |
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addql #8,%sp
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| 315 |
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RESTORE_SWITCH_STACK
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| 316 |
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addql #4,%sp
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| 317 |
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| 318 |
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btst #5,%sp@(LSR); /* going user? */
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| 319 |
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bnes not_user; /* no, skip */
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| 320 |
|
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move #0x2700,%sr; /* disable intrs */
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| 321 |
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movel sw_usp,%a0; /* get usp */
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| 322 |
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moveml %sp@(LFORMATVEC),%d1-%d2; /* copy exception */
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| 323 |
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moveml %d1-%d2,%a0@(-8);
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| 324 |
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bclr #5,%a0@(-8); /* clear format byte, bit 5 to make stack appear modulo 4 which it WILL be when we do the rte because it was generated in setup_frame */
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| 325 |
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bclr #4,%a0@(-8); /* clear format byte, bit 5 to make stack appear modulo 4 which it WILL be when we do the rte because it was generated in setup_frame */
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| 326 |
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moveml %sp@,%d1-%d5/%a0-%a1;
|
| 327 |
|
|
addl #28,%sp; /* space for 7 regs */
|
| 328 |
|
|
movel %sp@+,%d0;
|
| 329 |
|
|
addql #4,%sp; /* orig d0 */
|
| 330 |
|
|
addl %sp@+,%sp; /* stk adj */
|
| 331 |
|
|
addql #8,%sp; /* remove exception */
|
| 332 |
|
|
movel %sp,sw_ksp; /* save ksp */
|
| 333 |
|
|
movel sw_usp,%sp; /* restore usp */
|
| 334 |
|
|
subql #8,%sp; /* set exception */
|
| 335 |
|
|
rte;
|
| 336 |
|
|
not_user:
|
| 337 |
|
|
moveml %sp@,%d1-%d5/%a0-%a1;
|
| 338 |
|
|
addl #28,%sp; /* space for 7 regs */
|
| 339 |
|
|
movel %sp@+,%d0;
|
| 340 |
|
|
addql #4,%sp; /* orig d0 */
|
| 341 |
|
|
addl %sp@+,%sp; /* stk adj */
|
| 342 |
|
|
rte
|
| 343 |
|
|
|
| 344 |
|
|
/*--------------------------------------------------------------------------*/
|
| 345 |
|
|
|
| 346 |
|
|
/*
|
| 347 |
|
|
* Common ColdFire trap handler. Most traps come through here first.
|
| 348 |
|
|
*/
|
| 349 |
|
|
ENTRY(trap)
|
| 350 |
|
|
SAVE_ALL
|
| 351 |
|
|
moveq #-1,%d0
|
| 352 |
|
|
movel %d0,%sp@(LORIG_D0) | a -1 in the ORIG_D0 field
|
| 353 |
|
|
| signifies that the stack frame
|
| 354 |
|
|
| is NOT for syscall
|
| 355 |
|
|
movew %sp@(LFORMATVEC),%d0 | get exception vector
|
| 356 |
|
|
andl #0x03fc,%d0 | mask out vector only
|
| 357 |
|
|
lsrl #2,%d0 | calculate real vector #
|
| 358 |
|
|
movel %sp,%sp@- | stack frame pointer argument
|
| 359 |
|
|
movel %d0,%sp@- | push vector # on stack
|
| 360 |
|
|
|
| 361 |
|
|
jsr SYMBOL_NAME(trap_c)
|
| 362 |
|
|
addql #8,%sp
|
| 363 |
|
|
jra SYMBOL_NAME(ret_from_exception)
|
| 364 |
|
|
|
| 365 |
|
|
|
| 366 |
|
|
/*
|
| 367 |
|
|
* This is the generic interrupt handler (for all hardware interrupt
|
| 368 |
|
|
* sources). It figures out the vector number and calls the appropriate
|
| 369 |
|
|
* interrupt service routine directly.
|
| 370 |
|
|
*/
|
| 371 |
|
|
SYMBOL_NAME_LABEL(intrhandler)
|
| 372 |
|
|
SAVE_ALL
|
| 373 |
|
|
|
| 374 |
|
|
moveq #-1,%d0
|
| 375 |
|
|
movel %d0,%sp@(LORIG_D0) | a -1 in the ORIG_D0 field
|
| 376 |
|
|
| signifies that the stack frame
|
| 377 |
|
|
| is NOT for syscall
|
| 378 |
|
|
addql #1,SYMBOL_NAME(intr_count)
|
| 379 |
|
|
| put exception # in d0
|
| 380 |
|
|
movew %sp@(LFORMATVEC),%d0
|
| 381 |
|
|
andl #0x03fc,%d0 | mask out vector only
|
| 382 |
|
|
|
| 383 |
|
|
movel SYMBOL_NAME(irq_kstat_interrupt),%a0
|
| 384 |
|
|
| get addr of kstat struct
|
| 385 |
|
|
addql #1,%a0@(%d0) | incr irq intr count
|
| 386 |
|
|
|
| 387 |
|
|
lsrl #2,%d0 | calculate real vector #
|
| 388 |
|
|
movel %d0,%d1 | calculate array offset
|
| 389 |
|
|
lsll #4,%d1
|
| 390 |
|
|
lea SYMBOL_NAME(vec_list),%a0
|
| 391 |
|
|
addl %d1,%a0 | pointer to array struct
|
| 392 |
|
|
|
| 393 |
|
|
movel %sp,%sp@- | push regs arg onto stack
|
| 394 |
|
|
movel %a0@(8),%sp@- | push devid arg
|
| 395 |
|
|
movel %d0,%sp@- | push vector # on stack
|
| 396 |
|
|
|
| 397 |
|
|
movel %a0@,%a0 | get function to call
|
| 398 |
|
|
jbsr %a0@ | call vector handler
|
| 399 |
|
|
addl #12,%sp | pop parameters off stack
|
| 400 |
|
|
|
| 401 |
|
|
bra ret_from_interrupt | this was fallthrough
|
| 402 |
|
|
|
| 403 |
|
|
|
| 404 |
|
|
/*
|
| 405 |
|
|
* This is the fast interrupt handler (for certain hardware interrupt
|
| 406 |
|
|
* sources). Unlike the normal interrupt handler it just uses the
|
| 407 |
|
|
* current stack (doesn't care if it is user or kernel). It also
|
| 408 |
|
|
* doesn't bother doing the bottom half handlers.
|
| 409 |
|
|
*/
|
| 410 |
|
|
SYMBOL_NAME_LABEL(fasthandler)
|
| 411 |
|
|
SAVE_LOCAL
|
| 412 |
|
|
|
| 413 |
|
|
movew %sp@(LFORMATVEC),%d0
|
| 414 |
|
|
andl #0x03fc,%d0 | mask out vector only
|
| 415 |
|
|
|
| 416 |
|
|
movel SYMBOL_NAME(irq_kstat_interrupt),%a0
|
| 417 |
|
|
| get addr of kstat struct
|
| 418 |
|
|
addql #1,%a0@(%d0) | incr irq intr count
|
| 419 |
|
|
|
| 420 |
|
|
movel %sp,%sp@- | push regs arg onto stack
|
| 421 |
|
|
clrl %d1
|
| 422 |
|
|
movel %d1,%sp@- | push devid arg
|
| 423 |
|
|
lsrl #2,%d0 | calculate real vector #
|
| 424 |
|
|
movel %d0,%sp@- | push vector # on stack
|
| 425 |
|
|
|
| 426 |
|
|
lsll #4,%d0 | adjust for array offset
|
| 427 |
|
|
lea SYMBOL_NAME(vec_list),%a0
|
| 428 |
|
|
movel %a0@(%d0),%a0 | get function to call
|
| 429 |
|
|
jbsr %a0@ | call vector handler
|
| 430 |
|
|
addl #12,%sp | pop parameters off stack
|
| 431 |
|
|
|
| 432 |
|
|
RESTORE_LOCAL
|
| 433 |
|
|
|
| 434 |
|
|
/*--------------------------------------------------------------------------*/
|
| 435 |
|
|
|
| 436 |
|
|
SYMBOL_NAME_LABEL(ret_from_interrupt)
|
| 437 |
|
|
/* check if we need to do software interrupts */
|
| 438 |
|
|
1:
|
| 439 |
|
|
movel SYMBOL_NAME(intr_count),%d1
|
| 440 |
|
|
subql #1,%d1
|
| 441 |
|
|
jne 4f
|
| 442 |
|
|
|
| 443 |
|
|
|movel %sp@(LSR),%d0
|
| 444 |
|
|
|lsr #5,%d0
|
| 445 |
|
|
moveb %sp@(LSR),%d0
|
| 446 |
|
|
andl #0x7,%d0
|
| 447 |
|
|
|bfextu %sp@(LSR){#5,#3},%d0 | Check for nested interrupt.
|
| 448 |
|
|
#if MAX_NOINT_IPL > 0
|
| 449 |
|
|
cmpiw #MAX_NOINT_IPL,%d0
|
| 450 |
|
|
#endif
|
| 451 |
|
|
jhi 4f
|
| 452 |
|
|
|
| 453 |
|
|
move #0x2000,%sr; | enable intrs again
|
| 454 |
|
|
|
| 455 |
|
|
2:
|
| 456 |
|
|
movel SYMBOL_NAME(bh_active),%d0
|
| 457 |
|
|
andl SYMBOL_NAME(bh_mask),%d0
|
| 458 |
|
|
jne 3f
|
| 459 |
|
|
|
| 460 |
|
|
clrl SYMBOL_NAME(intr_count) | deliver signals, reschedule etc..
|
| 461 |
|
|
jra SYMBOL_NAME(ret_from_exception)
|
| 462 |
|
|
3:
|
| 463 |
|
|
jbsr SYMBOL_NAME(do_bottom_half)
|
| 464 |
|
|
jbra 2b
|
| 465 |
|
|
4:
|
| 466 |
|
|
movel %d1,SYMBOL_NAME(intr_count)
|
| 467 |
|
|
RESTORE_ALL
|
| 468 |
|
|
|
| 469 |
|
|
|
| 470 |
|
|
/* Handler for uninitialized and spurious interrupts */
|
| 471 |
|
|
|
| 472 |
|
|
SYMBOL_NAME_LABEL(bad_interrupt)
|
| 473 |
|
|
addql #1,SYMBOL_NAME(num_spurious)
|
| 474 |
|
|
rte
|
| 475 |
|
|
|
| 476 |
|
|
ENTRY(sys_fork)
|
| 477 |
|
|
SAVE_SWITCH_STACK
|
| 478 |
|
|
pea %sp@(SWITCH_STACK_SIZE)
|
| 479 |
|
|
jbsr SYMBOL_NAME(m68k_fork)
|
| 480 |
|
|
addql #4,%sp
|
| 481 |
|
|
RESTORE_SWITCH_STACK
|
| 482 |
|
|
rts
|
| 483 |
|
|
|
| 484 |
|
|
ENTRY(sys_clone)
|
| 485 |
|
|
SAVE_SWITCH_STACK
|
| 486 |
|
|
pea %sp@(SWITCH_STACK_SIZE)
|
| 487 |
|
|
jbsr SYMBOL_NAME(m68k_clone)
|
| 488 |
|
|
addql #4,%sp
|
| 489 |
|
|
RESTORE_SWITCH_STACK
|
| 490 |
|
|
rts
|
| 491 |
|
|
|
| 492 |
|
|
ENTRY(sys_sigsuspend)
|
| 493 |
|
|
SAVE_SWITCH_STACK
|
| 494 |
|
|
pea %sp@(SWITCH_STACK_SIZE)
|
| 495 |
|
|
jbsr SYMBOL_NAME(do_sigsuspend)
|
| 496 |
|
|
addql #4,%sp
|
| 497 |
|
|
RESTORE_SWITCH_STACK
|
| 498 |
|
|
rts
|
| 499 |
|
|
|
| 500 |
|
|
ENTRY(sys_sigreturn)
|
| 501 |
|
|
SAVE_SWITCH_STACK
|
| 502 |
|
|
jbsr SYMBOL_NAME(do_sigreturn)
|
| 503 |
|
|
RESTORE_SWITCH_STACK
|
| 504 |
|
|
rts
|
| 505 |
|
|
|
| 506 |
|
|
LTSS_KSP = 0
|
| 507 |
|
|
LTSS_USP = 4
|
| 508 |
|
|
LTSS_SR = 8
|
| 509 |
|
|
LTSS_FS = 10
|
| 510 |
|
|
LTSS_CRP = 12
|
| 511 |
|
|
LTSS_FPCTXT = 24
|
| 512 |
|
|
|
| 513 |
|
|
SYMBOL_NAME_LABEL(resume)
|
| 514 |
|
|
/*
|
| 515 |
|
|
* Beware - when entering resume, offset of tss is in d1,
|
| 516 |
|
|
* prev (the current task) is in a0, next (the new task)
|
| 517 |
|
|
* is in a1 and d2.b is non-zero if the mm structure is
|
| 518 |
|
|
* shared between the tasks, so don't change these
|
| 519 |
|
|
* registers until their contents are no longer needed.
|
| 520 |
|
|
*/
|
| 521 |
|
|
|
| 522 |
|
|
/* offset of tss struct (processor state) from beginning
|
| 523 |
|
|
of task struct */
|
| 524 |
|
|
addl %d1,%a0
|
| 525 |
|
|
|
| 526 |
|
|
/* save sr */
|
| 527 |
|
|
move %sr,%d0
|
| 528 |
|
|
movew %d0,%a0@(LTSS_SR)
|
| 529 |
|
|
|
| 530 |
|
|
/* disable interrupts */
|
| 531 |
|
|
oril #0x700,%d0
|
| 532 |
|
|
move %d0,%sr
|
| 533 |
|
|
|
| 534 |
|
|
#ifndef NO_MM
|
| 535 |
|
|
/* save fs (sfc,%dfc) (may be pointing to kernel memory) */
|
| 536 |
|
|
movec %sfc,%d0
|
| 537 |
|
|
movew %d0,%a0@(LTSS_FS)
|
| 538 |
|
|
#endif
|
| 539 |
|
|
|
| 540 |
|
|
/* save usp */
|
| 541 |
|
|
/* it is better to use a movel here instead of a movew 8*) */
|
| 542 |
|
|
|
| 543 |
|
|
|
| 544 |
|
|
/* save non-scratch registers on stack */
|
| 545 |
|
|
SAVE_SWITCH_STACK
|
| 546 |
|
|
|
| 547 |
|
|
/* Use the sw_usp, no real %usp */
|
| 548 |
|
|
movel sw_usp,%a2 /* usp */
|
| 549 |
|
|
movel %a2,%a0@(LTSS_USP)
|
| 550 |
|
|
#if 0
|
| 551 |
|
|
/* busted */
|
| 552 |
|
|
movel %usp,%d0 /* usp */
|
| 553 |
|
|
movel %d0,%a0@(LTSS_USP)
|
| 554 |
|
|
#endif
|
| 555 |
|
|
|
| 556 |
|
|
/* save current kernel stack pointer */
|
| 557 |
|
|
movel %sp,%a0@(LTSS_KSP)
|
| 558 |
|
|
|
| 559 |
|
|
/* get pointer to tss struct (a1 contains new task) */
|
| 560 |
|
|
movel %a1,SYMBOL_NAME(current_set)
|
| 561 |
|
|
addl %d1,%a1
|
| 562 |
|
|
|
| 563 |
|
|
/* Skip address space switching if they are the same. */
|
| 564 |
|
|
/* FIXME: what did we hack out of here, this does nothing! */
|
| 565 |
|
|
#if 0
|
| 566 |
|
|
tstb %d2
|
| 567 |
|
|
jne 4f
|
| 568 |
|
|
#endif
|
| 569 |
|
|
2:
|
| 570 |
|
|
4:
|
| 571 |
|
|
/* restore floating point context */
|
| 572 |
|
|
|
| 573 |
|
|
/* restore the kernel stack pointer */
|
| 574 |
|
|
movel %a1@(LTSS_KSP),%sp
|
| 575 |
|
|
|
| 576 |
|
|
/* restore non-scratch registers */
|
| 577 |
|
|
RESTORE_SWITCH_STACK
|
| 578 |
|
|
|
| 579 |
|
|
/* restore user stack pointer */
|
| 580 |
|
|
movel %a1@(LTSS_USP),%a0
|
| 581 |
|
|
/* No %usp, use a software copy */
|
| 582 |
|
|
movel %a0,sw_usp
|
| 583 |
|
|
|
| 584 |
|
|
#ifndef NO_MM
|
| 585 |
|
|
/* restore fs (sfc,%dfc) */
|
| 586 |
|
|
movew %a1@(LTSS_FS),%a0
|
| 587 |
|
|
movec %a0,%sfc
|
| 588 |
|
|
movec %a0,%dfc
|
| 589 |
|
|
#endif
|
| 590 |
|
|
|
| 591 |
|
|
/* restore status register */
|
| 592 |
|
|
movel %d0,%a0
|
| 593 |
|
|
move %a1@(LTSS_SR),%d0
|
| 594 |
|
|
move %d0,%sr
|
| 595 |
|
|
movel %a0,%d0
|
| 596 |
|
|
rts
|
| 597 |
|
|
|
| 598 |
|
|
.text
|
| 599 |
|
|
ALIGN
|
| 600 |
|
|
SYMBOL_NAME_LABEL(sys_call_table)
|
| 601 |
|
|
.long SYMBOL_NAME(sys_setup) /* 0 */
|
| 602 |
|
|
.long SYMBOL_NAME(sys_exit)
|
| 603 |
|
|
.long SYMBOL_NAME(sys_fork)
|
| 604 |
|
|
.long SYMBOL_NAME(sys_read)
|
| 605 |
|
|
.long SYMBOL_NAME(sys_write)
|
| 606 |
|
|
.long SYMBOL_NAME(sys_open) /* 5 */
|
| 607 |
|
|
.long SYMBOL_NAME(sys_close)
|
| 608 |
|
|
.long SYMBOL_NAME(sys_waitpid)
|
| 609 |
|
|
.long SYMBOL_NAME(sys_creat)
|
| 610 |
|
|
.long SYMBOL_NAME(sys_link)
|
| 611 |
|
|
.long SYMBOL_NAME(sys_unlink) /* 10 */
|
| 612 |
|
|
.long SYMBOL_NAME(sys_execve)
|
| 613 |
|
|
.long SYMBOL_NAME(sys_chdir)
|
| 614 |
|
|
.long SYMBOL_NAME(sys_time)
|
| 615 |
|
|
.long SYMBOL_NAME(sys_mknod)
|
| 616 |
|
|
.long SYMBOL_NAME(sys_chmod) /* 15 */
|
| 617 |
|
|
.long SYMBOL_NAME(sys_chown)
|
| 618 |
|
|
.long SYMBOL_NAME(sys_break)
|
| 619 |
|
|
.long SYMBOL_NAME(sys_stat)
|
| 620 |
|
|
.long SYMBOL_NAME(sys_lseek)
|
| 621 |
|
|
.long SYMBOL_NAME(sys_getpid) /* 20 */
|
| 622 |
|
|
.long SYMBOL_NAME(sys_mount)
|
| 623 |
|
|
.long SYMBOL_NAME(sys_umount)
|
| 624 |
|
|
.long SYMBOL_NAME(sys_setuid)
|
| 625 |
|
|
.long SYMBOL_NAME(sys_getuid)
|
| 626 |
|
|
.long SYMBOL_NAME(sys_stime) /* 25 */
|
| 627 |
|
|
.long SYMBOL_NAME(sys_ptrace)
|
| 628 |
|
|
.long SYMBOL_NAME(sys_alarm)
|
| 629 |
|
|
.long SYMBOL_NAME(sys_fstat)
|
| 630 |
|
|
.long SYMBOL_NAME(sys_pause)
|
| 631 |
|
|
.long SYMBOL_NAME(sys_utime) /* 30 */
|
| 632 |
|
|
.long SYMBOL_NAME(sys_stty)
|
| 633 |
|
|
.long SYMBOL_NAME(sys_gtty)
|
| 634 |
|
|
.long SYMBOL_NAME(sys_access)
|
| 635 |
|
|
.long SYMBOL_NAME(sys_nice)
|
| 636 |
|
|
.long SYMBOL_NAME(sys_ftime) /* 35 */
|
| 637 |
|
|
.long SYMBOL_NAME(sys_sync)
|
| 638 |
|
|
.long SYMBOL_NAME(sys_kill)
|
| 639 |
|
|
.long SYMBOL_NAME(sys_rename)
|
| 640 |
|
|
.long SYMBOL_NAME(sys_mkdir)
|
| 641 |
|
|
.long SYMBOL_NAME(sys_rmdir) /* 40 */
|
| 642 |
|
|
.long SYMBOL_NAME(sys_dup)
|
| 643 |
|
|
.long SYMBOL_NAME(sys_pipe)
|
| 644 |
|
|
.long SYMBOL_NAME(sys_times)
|
| 645 |
|
|
.long SYMBOL_NAME(sys_prof)
|
| 646 |
|
|
.long SYMBOL_NAME(sys_brk) /* 45 */
|
| 647 |
|
|
.long SYMBOL_NAME(sys_setgid)
|
| 648 |
|
|
.long SYMBOL_NAME(sys_getgid)
|
| 649 |
|
|
.long SYMBOL_NAME(sys_signal)
|
| 650 |
|
|
.long SYMBOL_NAME(sys_geteuid)
|
| 651 |
|
|
.long SYMBOL_NAME(sys_getegid) /* 50 */
|
| 652 |
|
|
.long SYMBOL_NAME(sys_acct)
|
| 653 |
|
|
.long SYMBOL_NAME(sys_phys)
|
| 654 |
|
|
.long SYMBOL_NAME(sys_lock)
|
| 655 |
|
|
.long SYMBOL_NAME(sys_ioctl)
|
| 656 |
|
|
.long SYMBOL_NAME(sys_fcntl) /* 55 */
|
| 657 |
|
|
.long SYMBOL_NAME(sys_mpx)
|
| 658 |
|
|
.long SYMBOL_NAME(sys_setpgid)
|
| 659 |
|
|
.long SYMBOL_NAME(sys_ulimit)
|
| 660 |
|
|
.long SYMBOL_NAME(sys_olduname)
|
| 661 |
|
|
.long SYMBOL_NAME(sys_umask) /* 60 */
|
| 662 |
|
|
.long SYMBOL_NAME(sys_chroot)
|
| 663 |
|
|
.long SYMBOL_NAME(sys_ustat)
|
| 664 |
|
|
.long SYMBOL_NAME(sys_dup2)
|
| 665 |
|
|
.long SYMBOL_NAME(sys_getppid)
|
| 666 |
|
|
.long SYMBOL_NAME(sys_getpgrp) /* 65 */
|
| 667 |
|
|
.long SYMBOL_NAME(sys_setsid)
|
| 668 |
|
|
.long SYMBOL_NAME(sys_sigaction)
|
| 669 |
|
|
.long SYMBOL_NAME(sys_sgetmask)
|
| 670 |
|
|
.long SYMBOL_NAME(sys_ssetmask)
|
| 671 |
|
|
.long SYMBOL_NAME(sys_setreuid) /* 70 */
|
| 672 |
|
|
.long SYMBOL_NAME(sys_setregid)
|
| 673 |
|
|
.long SYMBOL_NAME(sys_sigsuspend)
|
| 674 |
|
|
.long SYMBOL_NAME(sys_sigpending)
|
| 675 |
|
|
.long SYMBOL_NAME(sys_sethostname)
|
| 676 |
|
|
.long SYMBOL_NAME(sys_setrlimit) /* 75 */
|
| 677 |
|
|
.long SYMBOL_NAME(sys_getrlimit)
|
| 678 |
|
|
.long SYMBOL_NAME(sys_getrusage)
|
| 679 |
|
|
.long SYMBOL_NAME(sys_gettimeofday)
|
| 680 |
|
|
.long SYMBOL_NAME(sys_settimeofday)
|
| 681 |
|
|
.long SYMBOL_NAME(sys_getgroups) /* 80 */
|
| 682 |
|
|
.long SYMBOL_NAME(sys_setgroups)
|
| 683 |
|
|
.long SYMBOL_NAME(old_select)
|
| 684 |
|
|
.long SYMBOL_NAME(sys_symlink)
|
| 685 |
|
|
.long SYMBOL_NAME(sys_lstat)
|
| 686 |
|
|
.long SYMBOL_NAME(sys_readlink) /* 85 */
|
| 687 |
|
|
.long SYMBOL_NAME(sys_uselib)
|
| 688 |
|
|
.long SYMBOL_NAME(sys_swapon)
|
| 689 |
|
|
.long SYMBOL_NAME(sys_reboot)
|
| 690 |
|
|
.long SYMBOL_NAME(old_readdir)
|
| 691 |
|
|
.long SYMBOL_NAME(old_mmap) /* 90 */
|
| 692 |
|
|
.long SYMBOL_NAME(sys_munmap)
|
| 693 |
|
|
.long SYMBOL_NAME(sys_truncate)
|
| 694 |
|
|
.long SYMBOL_NAME(sys_ftruncate)
|
| 695 |
|
|
.long SYMBOL_NAME(sys_fchmod)
|
| 696 |
|
|
.long SYMBOL_NAME(sys_fchown) /* 95 */
|
| 697 |
|
|
.long SYMBOL_NAME(sys_getpriority)
|
| 698 |
|
|
.long SYMBOL_NAME(sys_setpriority)
|
| 699 |
|
|
.long SYMBOL_NAME(sys_profil)
|
| 700 |
|
|
.long SYMBOL_NAME(sys_statfs)
|
| 701 |
|
|
.long SYMBOL_NAME(sys_fstatfs) /* 100 */
|
| 702 |
|
|
.long SYMBOL_NAME(sys_ioperm)
|
| 703 |
|
|
.long SYMBOL_NAME(sys_socketcall)
|
| 704 |
|
|
.long SYMBOL_NAME(sys_syslog)
|
| 705 |
|
|
.long SYMBOL_NAME(sys_setitimer)
|
| 706 |
|
|
.long SYMBOL_NAME(sys_getitimer) /* 105 */
|
| 707 |
|
|
.long SYMBOL_NAME(sys_newstat)
|
| 708 |
|
|
.long SYMBOL_NAME(sys_newlstat)
|
| 709 |
|
|
.long SYMBOL_NAME(sys_newfstat)
|
| 710 |
|
|
.long SYMBOL_NAME(sys_uname)
|
| 711 |
|
|
.long SYMBOL_NAME(sys_ni_syscall) /* iopl for i386 */ /* 110 */
|
| 712 |
|
|
.long SYMBOL_NAME(sys_vhangup)
|
| 713 |
|
|
.long SYMBOL_NAME(sys_idle)
|
| 714 |
|
|
.long SYMBOL_NAME(sys_ni_syscall) /* vm86 for i386 */
|
| 715 |
|
|
.long SYMBOL_NAME(sys_wait4)
|
| 716 |
|
|
.long SYMBOL_NAME(sys_swapoff) /* 115 */
|
| 717 |
|
|
.long SYMBOL_NAME(sys_sysinfo)
|
| 718 |
|
|
.long SYMBOL_NAME(sys_ipc)
|
| 719 |
|
|
.long SYMBOL_NAME(sys_fsync)
|
| 720 |
|
|
.long SYMBOL_NAME(sys_sigreturn)
|
| 721 |
|
|
.long SYMBOL_NAME(sys_clone) /* 120 */
|
| 722 |
|
|
.long SYMBOL_NAME(sys_setdomainname)
|
| 723 |
|
|
.long SYMBOL_NAME(sys_newuname)
|
| 724 |
|
|
.long SYMBOL_NAME(sys_cacheflush) /* modify_ldt for i386 */
|
| 725 |
|
|
.long SYMBOL_NAME(sys_adjtimex)
|
| 726 |
|
|
.long SYMBOL_NAME(sys_mprotect) /* 125 */
|
| 727 |
|
|
.long SYMBOL_NAME(sys_sigprocmask)
|
| 728 |
|
|
.long SYMBOL_NAME(sys_create_module)
|
| 729 |
|
|
.long SYMBOL_NAME(sys_init_module)
|
| 730 |
|
|
.long SYMBOL_NAME(sys_delete_module)
|
| 731 |
|
|
.long SYMBOL_NAME(sys_get_kernel_syms) /* 130 */
|
| 732 |
|
|
.long SYMBOL_NAME(sys_quotactl)
|
| 733 |
|
|
.long SYMBOL_NAME(sys_getpgid)
|
| 734 |
|
|
.long SYMBOL_NAME(sys_fchdir)
|
| 735 |
|
|
.long SYMBOL_NAME(sys_bdflush)
|
| 736 |
|
|
.long SYMBOL_NAME(sys_sysfs) /* 135 */
|
| 737 |
|
|
.long SYMBOL_NAME(sys_personality)
|
| 738 |
|
|
.long SYMBOL_NAME(sys_ni_syscall) /* for afs_syscall */
|
| 739 |
|
|
.long SYMBOL_NAME(sys_setfsuid)
|
| 740 |
|
|
.long SYMBOL_NAME(sys_setfsgid)
|
| 741 |
|
|
.long SYMBOL_NAME(sys_llseek) /* 140 */
|
| 742 |
|
|
.long SYMBOL_NAME(sys_getdents)
|
| 743 |
|
|
.long SYMBOL_NAME(sys_select)
|
| 744 |
|
|
.long SYMBOL_NAME(sys_flock)
|
| 745 |
|
|
.long SYMBOL_NAME(sys_msync)
|
| 746 |
|
|
.long SYMBOL_NAME(sys_readv) /* 145 */
|
| 747 |
|
|
.long SYMBOL_NAME(sys_writev)
|
| 748 |
|
|
.long SYMBOL_NAME(sys_getsid)
|
| 749 |
|
|
.long SYMBOL_NAME(sys_fdatasync)
|
| 750 |
|
|
.long SYMBOL_NAME(sys_sysctl)
|
| 751 |
|
|
.long SYMBOL_NAME(sys_mlock) /* 150 */
|
| 752 |
|
|
.long SYMBOL_NAME(sys_munlock)
|
| 753 |
|
|
.long SYMBOL_NAME(sys_mlockall)
|
| 754 |
|
|
.long SYMBOL_NAME(sys_munlockall)
|
| 755 |
|
|
.long SYMBOL_NAME(sys_sched_setparam)
|
| 756 |
|
|
.long SYMBOL_NAME(sys_sched_getparam) /* 155 */
|
| 757 |
|
|
.long SYMBOL_NAME(sys_sched_setscheduler)
|
| 758 |
|
|
.long SYMBOL_NAME(sys_sched_getscheduler)
|
| 759 |
|
|
.long SYMBOL_NAME(sys_sched_yield)
|
| 760 |
|
|
.long SYMBOL_NAME(sys_sched_get_priority_max)
|
| 761 |
|
|
.long SYMBOL_NAME(sys_sched_get_priority_min) /* 160 */
|
| 762 |
|
|
.long SYMBOL_NAME(sys_sched_rr_get_interval)
|
| 763 |
|
|
.long SYMBOL_NAME(sys_nanosleep)
|
| 764 |
|
|
.long SYMBOL_NAME(sys_mremap)
|
| 765 |
|
|
.space (NR_syscalls-163)*4
|
