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/* -*- mode: asm -*-
*
* linux/arch/m68knommu/kernel/entry.S
*
* Copyright (C) 1998 D. Jeff Dionne <jeff@ryeham.ee.ryerson.ca>,
* Kenneth Albanowski <kjahds@kjahds.com>,
* The Silver Hammer Group, Ltd.
*
* (The icky duplicate functions are my fault -- kja)
*
* Based on:
*
* linux/arch/m68k/kernel/entry.S
*
* Copyright (C) 1991, 1992 Linus Torvalds
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file README.legal in the main directory of this archive
* for more details.
*
* Linux/m68k support by Hamish Macdonald
*
* 68060 fixes by Jesper Skov
*
*/
/*
* entry.S contains the system-call and fault low-level handling routines.
* This also contains the timer-interrupt handler, as well as all interrupts
* and faults that can result in a task-switch.
*
* NOTE: This code handles signal-recognition, which happens every time
* after a timer-interrupt and after each system call.
*
* Stack layout in 'ret_from_exception':
*
* This allows access to the syscall arguments in registers d1-d5
*
* 0(sp) - d1
* 4(sp) - d2
* 8(sp) - d3
* C(sp) - d4
* 10(sp) - d5
* 14(sp) - a0
* 18(sp) - a1
* 1C(sp) - d0
* 20(sp) - orig_d0
* 24(sp) - stack adjustment
* 28(sp) - sr
* 2A(sp) - pc
* 2E(sp) - format & vector
*/
/*
* 12/03/96 Jes: Currently we only support m68k single-cpu systems, so
* all pointers that used to be 'current' are now entry
* number 0 in the 'current_set' list.
*/
#include <linux/sys.h>
#include <linux/config.h>
#include <linux/linkage.h>
#include <asm/setup.h>
#include <asm/segment.h>
LENOSYS = 38
/*
* these are offsets into the task-struct
*/
LTASK_STATE = 0
LTASK_COUNTER = 4
LTASK_PRIORITY = 8
LTASK_SIGNAL = 12
LTASK_BLOCKED = 16
LTASK_FLAGS = 20
/* the following macro is used when enabling interrupts */
#define ALLOWINT 0xf8ff
#define MAX_NOINT_IPL 0
LD0 = 0x1C
LORIG_D0 = 0x20
LSR = 0x28
LFORMATVEC = 0x2E
/*
* This defines the normal kernel pt-regs layout.
*
* regs are a2-a6 and d6-d7 preserved by C code
* the kernel doesn't mess with usp unless it needs to
*/
#define SAVE_ALL \
clrl %sp@-; /* stk_adj */ \
movel %d0,%sp@-; /* orig d0 */ \
movel %d0,%sp@-; /* d0 */ \
moveml %d1-%d5/%a0-%a1,%sp@-
/* moveml %sp@+,%a0-%a1/%d1-%d5; */
#define RESTORE_ALL \
moveml %sp@+,%d1-%d5/%a0-%a1; \
movel %sp@+,%d0; \
addql #4,%sp; /* orig d0 */ \
addl %sp@+,%sp; /* stk adj */ \
rte
#define SWITCH_STACK_SIZE (7*4+4) /* includes return address */
#define SAVE_SWITCH_STACK \
moveml %a2-%a6/%d6-%d7,%sp@-
#define RESTORE_SWITCH_STACK \
moveml %sp@+,%a2-%a6/%d6-%d7
.globl SYMBOL_NAME(system_call), SYMBOL_NAME(buserr), SYMBOL_NAME(trap)
.globl SYMBOL_NAME(resume), SYMBOL_NAME(ret_from_exception)
.globl SYMBOL_NAME(ret_from_signal)
.globl SYMBOL_NAME(trap3)
.globl SYMBOL_NAME(trap4)
.globl SYMBOL_NAME(trap5)
.globl SYMBOL_NAME(inthandler1)
.globl SYMBOL_NAME(inthandler1)
.globl SYMBOL_NAME(inthandler1)
.globl SYMBOL_NAME(inthandler2)
.globl SYMBOL_NAME(inthandler3)
.globl SYMBOL_NAME(inthandler4)
.globl SYMBOL_NAME(inthandler5)
.globl SYMBOL_NAME(inthandler6)
.globl SYMBOL_NAME(inthandler7)
.globl SYMBOL_NAME(inthandler8)
.globl SYMBOL_NAME(inthandler)
.globl SYMBOL_NAME(inthandler_wrap)
.globl SYMBOL_NAME(timerhandler)
.globl SYMBOL_NAME(serialhandler)
.globl SYMBOL_NAME(sys_call_table)
.globl SYMBOL_NAME(sys_fork), SYMBOL_NAME(sys_clone)
.globl SYMBOL_NAME(ret_from_interrupt), SYMBOL_NAME(bad_interrupt)
.text
ENTRY(buserr)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
jsr SYMBOL_NAME(buserr_c)
addql #4,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movew %sp@(LFORMATVEC),%d0
lsrl #2, %d0
andl #0x3ff,%d0
movel %sp,%sp@- /* stack frame pointer argument */
movel %d0,%sp@-
moveq #-1,%d0
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap3)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #3,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap4)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #4,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap5)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #5,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap6)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #6,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap7)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #7,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap8)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #8,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap9)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #9,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap10)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #10,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap11)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #11,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap12)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #12,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap13)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #13,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap14)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #14,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap15)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #15,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap33)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #33,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap34)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #34,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap35)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #35,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap36)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #36,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap37)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #37,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap38)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #38,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap39)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #39,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap40)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #40,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap41)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #41,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap42)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #42,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap43)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #43,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap44)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #44,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap45)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #45,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap46)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #46,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(trap47)
SAVE_ALL
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
movel %sp,%sp@- /* stack frame pointer argument */
movel #47,%sp@-
jsr SYMBOL_NAME(trap_c)
addql #8,%sp
jra SYMBOL_NAME(ret_from_exception)
ENTRY(reschedule)
/* save top of frame */
pea %sp@
jbsr SYMBOL_NAME(set_esp0)
addql #4,%sp
pea SYMBOL_NAME(ret_from_exception)
jmp SYMBOL_NAME(schedule)
ENTRY(system_call)
SAVE_ALL
movel #-LENOSYS,LD0(%sp) /* default return value in d0 */
/* original D0 is in orig_d0 */
movel %d0,%d2
/* save top of frame */
pea %sp@
jbsr SYMBOL_NAME(set_esp0)
addql #4,%sp
cmpl #NR_syscalls,%d2
jcc SYMBOL_NAME(ret_from_exception)
lea SYMBOL_NAME(sys_call_table),%a0
lsl #2,%d2 /* movel %a0@(%d2:l:4),%d3 */
movel %a0@(%d2),%d3
jeq SYMBOL_NAME(ret_from_exception)
lsr #2,%d2
movel SYMBOL_NAME(current_set),%a0
btst #5,%a0@(LTASK_FLAGS+3) /* PF_TRACESYS */
bnes 1f
movel %d3,%a0
jbsr %a0@
movel %d0,%sp@(LD0) /* save the return value */
jra SYMBOL_NAME(ret_from_exception)
1:
subql #4,%sp
SAVE_SWITCH_STACK
jbsr SYMBOL_NAME(syscall_trace)
RESTORE_SWITCH_STACK
addql #4,%sp
movel %d3,%a0
jbsr %a0@
movel %d0,%sp@(LD0) /* save the return value */
subql #4,%sp /* dummy return address */
SAVE_SWITCH_STACK
jbsr SYMBOL_NAME(syscall_trace)
SYMBOL_NAME_LABEL(ret_from_signal)
RESTORE_SWITCH_STACK
addql #4,%sp
SYMBOL_NAME_LABEL(ret_from_exception)
btst #5,%sp@(LSR) /* check if returning to kernel */
bnes 2f /* if so, skip resched, signals */
tstl SYMBOL_NAME(need_resched)
jne SYMBOL_NAME(reschedule)
movel SYMBOL_NAME(current_set),%a0
cmpl #SYMBOL_NAME(task),%a0 /* task[0] cannot have signals */
jeq 2f
bclr #5,%a0@(LTASK_FLAGS+1) /* check for delayed trace */
jeq 1f
bclr #7,%sp@(LSR) /* clear trace bit in SR */
pea 1 /* send SIGTRAP */
movel %a0,%sp@-
pea 5
jbsr SYMBOL_NAME(send_sig)
addql #8,%sp
addql #4,%sp
movel SYMBOL_NAME(current_set),%a0
1:
tstl %a0@(LTASK_STATE) /* state */
jne SYMBOL_NAME(reschedule)
tstl %a0@(LTASK_COUNTER) /* counter */
jeq SYMBOL_NAME(reschedule)
movel %a0@(LTASK_BLOCKED),%d0
movel %d0,%d1 /* save blocked in d1 for sig handling */
notl %d0
btst #4,%a0@(LTASK_FLAGS+3) /* PF_PTRACED */
jeq 1f
moveq #-1,%d0 /* let the debugger see all signals */
1: andl %a0@(LTASK_SIGNAL),%d0
jne Lsignal_return
2: RESTORE_ALL /* Does RTE */
Lsignal_return:
subql #4,%sp /* dummy return address */
SAVE_SWITCH_STACK
pea %sp@(SWITCH_STACK_SIZE)
movel %d1,%sp@-
jsr SYMBOL_NAME(do_signal)
addql #8,%sp
RESTORE_SWITCH_STACK
addql #4,%sp
RESTORE_ALL
/*
** This is the main interrupt handler, responsible for calling process_int()
*/
SYMBOL_NAME_LABEL(timerhandler)
SAVE_ALL
oriw #0x700,%sr
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
addql #1,SYMBOL_NAME(intr_count)
/* put exception # in d0 */
/*movel %sp@(LFORMATVEC),%d0 */
/*lsr #4,%d0 */
movew %sp@(LFORMATVEC),%d0
and #0x3ff,%d0
/* bfextu %sp@(LFORMATVEC){#4,#10},%d0 */
movel %sp,%sp@-
movel #0x40,%sp@- /* put vector # on stack (was %d0) */
jbsr SYMBOL_NAME(process_int)/* process the IRQ */
addql #8,%sp /* pop parameters off stack */
bra ret_from_interrupt /* this was fallthrough */
/*
** This is the main interrupt handler, responsible for calling process_int()
*/
SYMBOL_NAME_LABEL(serialhandler)
SAVE_ALL
oriw #0x700,%sr
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
addql #1,SYMBOL_NAME(intr_count)
/* put exception # in d0 */
/*movel %sp@(LFORMATVEC),%d0 */
/*lsr #4,%d0 */
movew %sp@(LFORMATVEC),%d0
and #0x3ff,%d0
/* bfextu %sp@(LFORMATVEC){#4,#10},%d0 */
movel %sp,%sp@-
movel #0x42,%sp@- /* put vector # on stack (was %d0) */
jbsr SYMBOL_NAME(process_int)/* process the IRQ */
addql #8,%sp /* pop parameters off stack */
bra ret_from_interrupt /* this was fallthrough */
/*
** This is the main interrupt handler, responsible for calling process_int()
*/
SYMBOL_NAME_LABEL(inthandler1)
SAVE_ALL
oriw #0x700,%sr
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
addql #1,SYMBOL_NAME(intr_count)
/* put exception # in d0 */
/*movel %sp@(LFORMATVEC),%d0 */
/*lsr #4,%d0 */
movew %sp@(LFORMATVEC),%d0
and #0x3ff,%d0
/* bfextu %sp@(LFORMATVEC){#4,#10},%d0 */
movel %sp,%sp@-
movel #65,%sp@- /* put vector # on stack (was %d0) */
jbsr SYMBOL_NAME(process_int)/* process the IRQ */
addql #8,%sp /* pop parameters off stack */
bra ret_from_interrupt /* this was fallthrough */
/*
** This is the main interrupt handler, responsible for calling process_int()
*/
SYMBOL_NAME_LABEL(inthandler2)
SAVE_ALL
oriw #0x700,%sr
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
addql #1,SYMBOL_NAME(intr_count)
/* put exception # in d0 */
/*movel %sp@(LFORMATVEC),%d0 */
/*lsr #4,%d0 */
movew %sp@(LFORMATVEC),%d0
and #0x3ff,%d0
/* bfextu %sp@(LFORMATVEC){#4,#10},%d0 */
movel %sp,%sp@-
movel #66,%sp@- /* put vector # on stack (was %d0) */
jbsr SYMBOL_NAME(process_int)/* process the IRQ */
addql #8,%sp /* pop parameters off stack */
bra ret_from_interrupt /* this was fallthrough */
/*
** This is the main interrupt handler, responsible for calling process_int()
*/
SYMBOL_NAME_LABEL(inthandler3)
SAVE_ALL
oriw #0x700,%sr
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
addql #1,SYMBOL_NAME(intr_count)
/* put exception # in d0 */
/*movel %sp@(LFORMATVEC),%d0 */
/*lsr #4,%d0 */
movew %sp@(LFORMATVEC),%d0
and #0x3ff,%d0
/* bfextu %sp@(LFORMATVEC){#4,#10},%d0 */
movel %sp,%sp@-
movel #67,%sp@- /* put vector # on stack (was %d0) */
jbsr SYMBOL_NAME(process_int)/* process the IRQ */
addql #8,%sp /* pop parameters off stack */
bra ret_from_interrupt /* this was fallthrough */
/*
** This is the main interrupt handler, responsible for calling process_int()
*/
SYMBOL_NAME_LABEL(inthandler4)
SAVE_ALL
oriw #0x700,%sr
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
addql #1,SYMBOL_NAME(intr_count)
/* put exception # in d0 */
/*movel %sp@(LFORMATVEC),%d0 */
/*lsr #4,%d0 */
movew %sp@(LFORMATVEC),%d0
and #0x3ff,%d0
/* bfextu %sp@(LFORMATVEC){#4,#10},%d0 */
movel %sp,%sp@-
movel #68,%sp@- /* put vector # on stack (was %d0) */
jbsr SYMBOL_NAME(process_int)/* process the IRQ */
addql #8,%sp /* pop parameters off stack */
bra ret_from_interrupt /* this was fallthrough */
/*
** This is the main interrupt handler, responsible for calling process_int()
*/
SYMBOL_NAME_LABEL(inthandler5)
SAVE_ALL
oriw #0x700,%sr
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
addql #1,SYMBOL_NAME(intr_count)
/* put exception # in d0 */
/*movel %sp@(LFORMATVEC),%d0 */
/*lsr #4,%d0 */
movew %sp@(LFORMATVEC),%d0
and #0x3ff,%d0
/* bfextu %sp@(LFORMATVEC){#4,#10},%d0 */
movel %sp,%sp@-
movel #69,%sp@- /* put vector # on stack (was %d0) */
jbsr SYMBOL_NAME(process_int)/* process the IRQ */
addql #8,%sp /* pop parameters off stack */
bra ret_from_interrupt /* this was fallthrough */
/*
** This is the main interrupt handler, responsible for calling process_int()
*/
SYMBOL_NAME_LABEL(inthandler6)
SAVE_ALL
oriw #0x700,%sr
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
addql #1,SYMBOL_NAME(intr_count)
/* put exception # in d0 */
/*movel %sp@(LFORMATVEC),%d0 */
/*lsr #4,%d0 */
movew %sp@(LFORMATVEC),%d0
and #0x3ff,%d0
/* bfextu %sp@(LFORMATVEC){#4,#10},%d0 */
movel %sp,%sp@-
movel #70,%sp@- /* put vector # on stack (was %d0) */
jbsr SYMBOL_NAME(process_int)/* process the IRQ */
addql #8,%sp /* pop parameters off stack */
bra ret_from_interrupt /* this was fallthrough */
/*
** This is the main interrupt handler, responsible for calling process_int()
*/
SYMBOL_NAME_LABEL(inthandler7)
SAVE_ALL
oriw #0x700,%sr
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
addql #1,SYMBOL_NAME(intr_count)
/* put exception # in d0 */
/*movel %sp@(LFORMATVEC),%d0 */
/*lsr #4,%d0 */
movew %sp@(LFORMATVEC),%d0
and #0x3ff,%d0
/* bfextu %sp@(LFORMATVEC){#4,#10},%d0 */
movel %sp,%sp@-
movel #71,%sp@- /* put vector # on stack (was %d0) */
jbsr SYMBOL_NAME(process_int)/* process the IRQ */
addql #8,%sp /* pop parameters off stack */
bra ret_from_interrupt /* this was fallthrough */
/*
** This is the main interrupt handler, responsible for calling process_int()
*/
SYMBOL_NAME_LABEL(inthandler8)
SAVE_ALL
oriw #0x700,%sr
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
addql #1,SYMBOL_NAME(intr_count)
/* put exception # in d0 */
/*movel %sp@(LFORMATVEC),%d0 */
/*lsr #4,%d0 */
movew %sp@(LFORMATVEC),%d0
and #0x3ff,%d0
/* bfextu %sp@(LFORMATVEC){#4,#10},%d0 */
movel %sp,%sp@-
movel #72,%sp@- /* put vector # on stack (was %d0) */
jbsr SYMBOL_NAME(process_int)/* process the IRQ */
addql #8,%sp /* pop parameters off stack */
bra ret_from_interrupt /* this was fallthrough */
/*
** This is the main interrupt handler, responsible for calling process_int()
*/
SYMBOL_NAME_LABEL(inthandler_wrap)
SAVE_ALL
oriw #0x700,%sr
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
addql #1,SYMBOL_NAME(intr_count)
/* put exception # in d0 */
/*movel %sp@(LFORMATVEC),%d0 */
/*lsr #4,%d0 */
movew %sp@(LFORMATVEC),%d0
lsrl #2, %d0
andl #0x3ff,%d0
/*| bfextu %sp@(LFORMATVEC){#4,#10},%d0 */
movel %sp,%sp@-
movel %d0 /*#31*/ ,%sp@- /* put vector # on stack */
jbsr SYMBOL_NAME(process_int)/* process the IRQ */
addql #8,%sp /* pop parameters off stack */
bra ret_from_interrupt /* this was fallthrough */
/*
** This is the main interrupt handler, responsible for calling process_int()
*/
SYMBOL_NAME_LABEL(inthandler)
SAVE_ALL
oriw #0x700,%sr
moveq #-1,%d0
movel %d0,%sp@(LORIG_D0) /* a -1 in the ORIG_D0 field */
/* signifies that the stack frame */
/* is NOT for syscall */
addql #1,SYMBOL_NAME(intr_count)
/* put exception # in d0 */
/*movel %sp@(LFORMATVEC),%d0 */
/*lsr #4,%d0 */
movew %sp@(LFORMATVEC),%d0
lsrl #2, %d0
andl #0x3ff,%d0
/*| bfextu %sp@(LFORMATVEC){#4,#10},%d0 */
movel %sp,%sp@-
movel %d0,%sp@- /* put vector # on stack */
jbsr SYMBOL_NAME(process_int)/* process the IRQ */
addql #8,%sp /* pop parameters off stack */
SYMBOL_NAME_LABEL(ret_from_interrupt)
/* check if we need to do software interrupts */
1:
movel SYMBOL_NAME(intr_count),%d1
subql #1,%d1
jne 4f
/*movel %sp@(LSR),%d0 */
/*lsr #5,%d0 */
moveb %sp@(LSR),%d0
and #0x7,%d0
/*bfextu %sp@(LSR){#5,#3},%d0 | Check for nested interrupt. */
#if MAX_NOINT_IPL > 0
cmpiw #MAX_NOINT_IPL,%d0
#endif
jhi 4f
2:
movel SYMBOL_NAME(bh_active),%d0
andl SYMBOL_NAME(bh_mask),%d0
jne 3f
clrl SYMBOL_NAME(intr_count) /* deliver signals, reschedule etc.. */
jra SYMBOL_NAME(ret_from_exception)
3:
jbsr SYMBOL_NAME(do_bottom_half)
jbra 2b
4:
movel %d1,SYMBOL_NAME(intr_count)
RESTORE_ALL
/* Handler for uninitialized and spurious interrupts */
SYMBOL_NAME_LABEL(bad_interrupt)
addql #1,SYMBOL_NAME(num_spurious)
rte
ENTRY(sys_fork)
SAVE_SWITCH_STACK
pea %sp@(SWITCH_STACK_SIZE)
jbsr SYMBOL_NAME(m68k_fork)
addql #4,%sp
RESTORE_SWITCH_STACK
rts
ENTRY(sys_clone)
SAVE_SWITCH_STACK
pea %sp@(SWITCH_STACK_SIZE)
jbsr SYMBOL_NAME(m68k_clone)
addql #4,%sp
RESTORE_SWITCH_STACK
rts
ENTRY(sys_sigsuspend)
SAVE_SWITCH_STACK
pea %sp@(SWITCH_STACK_SIZE)
jbsr SYMBOL_NAME(do_sigsuspend)
addql #4,%sp
RESTORE_SWITCH_STACK
rts
ENTRY(sys_sigreturn)
SAVE_SWITCH_STACK
jbsr SYMBOL_NAME(do_sigreturn)
RESTORE_SWITCH_STACK
rts
LFLUSH_I_AND_D = 0x00000808
LTSS_KSP = 0
LTSS_USP = 4
LTSS_SR = 8
LTSS_FS = 10
LTSS_CRP = 12
LTSS_FPCTXT = 24
SYMBOL_NAME_LABEL(resume)
/*
* Beware - when entering resume, offset of tss is in d1,
* prev (the current task) is in a0, next (the new task)
* is in a1 and d2.b is non-zero if the mm structure is
* shared between the tasks, so don't change these
* registers until their contents are no longer needed.
*/
/* offset of tss struct (processor state) from beginning
of task struct */
addl %d1,%a0
/* save sr */
movew %sr,%a0@(LTSS_SR)
/* disable interrupts */
oriw #0x0700,%sr
#ifndef NO_MM
/* save fs (sfc,%dfc) (may be pointing to kernel memory) */
movec %sfc,%d0
movew %d0,%a0@(LTSS_FS)
#endif
/* save usp */
/* it is better to use a movel here instead of a movew 8*) */
/* save non-scratch registers on stack */
SAVE_SWITCH_STACK
movel %usp,%a2 /* usp */
movel %a2,%a0@(LTSS_USP)
#if 0
/* busted */
movel %usp,%d0 /* usp */
movel %d0,%a0@(LTSS_USP)
#endif
/* save current kernel stack pointer */
movel %sp,%a0@(LTSS_KSP)
/* get pointer to tss struct (a1 contains new task) */
movel %a1,SYMBOL_NAME(current_set)
addl %d1,%a1
/* Skip address space switching if they are the same. */
/* FIXME: what did we hack out of here, this does nothing! */
#if 0
tstb %d2
jne 4f
#endif
2:
4:
/* restore floating point context */
/* restore the kernel stack pointer */
movel %a1@(LTSS_KSP),%sp
/* restore non-scratch registers */
RESTORE_SWITCH_STACK
/* restore user stack pointer */
movel %a1@(LTSS_USP),%a0
movel %a0,%usp
#ifndef NO_MM
/* restore fs (sfc,%dfc) */
movew %a1@(LTSS_FS),%a0
movec %a0,%sfc
movec %a0,%dfc
#endif
/* restore status register */
movew %a1@(LTSS_SR),%sr
rts
.text
ALIGN
SYMBOL_NAME_LABEL(sys_call_table)
.long SYMBOL_NAME(sys_setup) /* 0 */
.long SYMBOL_NAME(sys_exit)
.long SYMBOL_NAME(sys_fork)
.long SYMBOL_NAME(sys_read)
.long SYMBOL_NAME(sys_write)
.long SYMBOL_NAME(sys_open) /* 5 */
.long SYMBOL_NAME(sys_close)
.long SYMBOL_NAME(sys_waitpid)
.long SYMBOL_NAME(sys_creat)
.long SYMBOL_NAME(sys_link)
.long SYMBOL_NAME(sys_unlink) /* 10 */
.long SYMBOL_NAME(sys_execve)
.long SYMBOL_NAME(sys_chdir)
.long SYMBOL_NAME(sys_time)
.long SYMBOL_NAME(sys_mknod)
.long SYMBOL_NAME(sys_chmod) /* 15 */
.long SYMBOL_NAME(sys_chown)
.long SYMBOL_NAME(sys_break)
.long SYMBOL_NAME(sys_stat)
.long SYMBOL_NAME(sys_lseek)
.long SYMBOL_NAME(sys_getpid) /* 20 */
.long SYMBOL_NAME(sys_mount)
.long SYMBOL_NAME(sys_umount)
.long SYMBOL_NAME(sys_setuid)
.long SYMBOL_NAME(sys_getuid)
.long SYMBOL_NAME(sys_stime) /* 25 */
.long SYMBOL_NAME(sys_ptrace)
.long SYMBOL_NAME(sys_alarm)
.long SYMBOL_NAME(sys_fstat)
.long SYMBOL_NAME(sys_pause)
.long SYMBOL_NAME(sys_utime) /* 30 */
.long SYMBOL_NAME(sys_stty)
.long SYMBOL_NAME(sys_gtty)
.long SYMBOL_NAME(sys_access)
.long SYMBOL_NAME(sys_nice)
.long SYMBOL_NAME(sys_ftime) /* 35 */
.long SYMBOL_NAME(sys_sync)
.long SYMBOL_NAME(sys_kill)
.long SYMBOL_NAME(sys_rename)
.long SYMBOL_NAME(sys_mkdir)
.long SYMBOL_NAME(sys_rmdir) /* 40 */
.long SYMBOL_NAME(sys_dup)
.long SYMBOL_NAME(sys_pipe)
.long SYMBOL_NAME(sys_times)
.long SYMBOL_NAME(sys_prof)
.long SYMBOL_NAME(sys_brk) /* 45 */
.long SYMBOL_NAME(sys_setgid)
.long SYMBOL_NAME(sys_getgid)
.long SYMBOL_NAME(sys_signal)
.long SYMBOL_NAME(sys_geteuid)
.long SYMBOL_NAME(sys_getegid) /* 50 */
.long SYMBOL_NAME(sys_acct)
.long SYMBOL_NAME(sys_phys)
.long SYMBOL_NAME(sys_lock)
.long SYMBOL_NAME(sys_ioctl)
.long SYMBOL_NAME(sys_fcntl) /* 55 */
.long SYMBOL_NAME(sys_mpx)
.long SYMBOL_NAME(sys_setpgid)
.long SYMBOL_NAME(sys_ulimit)
.long SYMBOL_NAME(sys_olduname)
.long SYMBOL_NAME(sys_umask) /* 60 */
.long SYMBOL_NAME(sys_chroot)
.long SYMBOL_NAME(sys_ustat)
.long SYMBOL_NAME(sys_dup2)
.long SYMBOL_NAME(sys_getppid)
.long SYMBOL_NAME(sys_getpgrp) /* 65 */
.long SYMBOL_NAME(sys_setsid)
.long SYMBOL_NAME(sys_sigaction)
.long SYMBOL_NAME(sys_sgetmask)
.long SYMBOL_NAME(sys_ssetmask)
.long SYMBOL_NAME(sys_setreuid) /* 70 */
.long SYMBOL_NAME(sys_setregid)
.long SYMBOL_NAME(sys_sigsuspend)
.long SYMBOL_NAME(sys_sigpending)
.long SYMBOL_NAME(sys_sethostname)
.long SYMBOL_NAME(sys_setrlimit) /* 75 */
.long SYMBOL_NAME(sys_getrlimit)
.long SYMBOL_NAME(sys_getrusage)
.long SYMBOL_NAME(sys_gettimeofday)
.long SYMBOL_NAME(sys_settimeofday)
.long SYMBOL_NAME(sys_getgroups) /* 80 */
.long SYMBOL_NAME(sys_setgroups)
.long SYMBOL_NAME(old_select)
.long SYMBOL_NAME(sys_symlink)
.long SYMBOL_NAME(sys_lstat)
.long SYMBOL_NAME(sys_readlink) /* 85 */
.long SYMBOL_NAME(sys_uselib)
.long SYMBOL_NAME(sys_swapon)
.long SYMBOL_NAME(sys_reboot)
.long SYMBOL_NAME(old_readdir)
.long SYMBOL_NAME(old_mmap) /* 90 */
.long SYMBOL_NAME(sys_munmap)
.long SYMBOL_NAME(sys_truncate)
.long SYMBOL_NAME(sys_ftruncate)
.long SYMBOL_NAME(sys_fchmod)
.long SYMBOL_NAME(sys_fchown) /* 95 */
.long SYMBOL_NAME(sys_getpriority)
.long SYMBOL_NAME(sys_setpriority)
.long SYMBOL_NAME(sys_profil)
.long SYMBOL_NAME(sys_statfs)
.long SYMBOL_NAME(sys_fstatfs) /* 100 */
.long SYMBOL_NAME(sys_ioperm)
.long SYMBOL_NAME(sys_socketcall)
.long SYMBOL_NAME(sys_syslog)
.long SYMBOL_NAME(sys_setitimer)
.long SYMBOL_NAME(sys_getitimer) /* 105 */
.long SYMBOL_NAME(sys_newstat)
.long SYMBOL_NAME(sys_newlstat)
.long SYMBOL_NAME(sys_newfstat)
.long SYMBOL_NAME(sys_uname)
.long SYMBOL_NAME(sys_ni_syscall) /* iopl for i386 */ /* 110 */
.long SYMBOL_NAME(sys_vhangup)
.long SYMBOL_NAME(sys_idle)
.long SYMBOL_NAME(sys_ni_syscall) /* vm86 for i386 */
.long SYMBOL_NAME(sys_wait4)
.long SYMBOL_NAME(sys_swapoff) /* 115 */
.long SYMBOL_NAME(sys_sysinfo)
.long SYMBOL_NAME(sys_ipc)
.long SYMBOL_NAME(sys_fsync)
.long SYMBOL_NAME(sys_sigreturn)
.long SYMBOL_NAME(sys_clone) /* 120 */
.long SYMBOL_NAME(sys_setdomainname)
.long SYMBOL_NAME(sys_newuname)
.long SYMBOL_NAME(sys_cacheflush) /* modify_ldt for i386 */
.long SYMBOL_NAME(sys_adjtimex)
.long SYMBOL_NAME(sys_mprotect) /* 125 */
.long SYMBOL_NAME(sys_sigprocmask)
.long SYMBOL_NAME(sys_create_module)
.long SYMBOL_NAME(sys_init_module)
.long SYMBOL_NAME(sys_delete_module)
.long SYMBOL_NAME(sys_get_kernel_syms) /* 130 */
.long SYMBOL_NAME(sys_quotactl)
.long SYMBOL_NAME(sys_getpgid)
.long SYMBOL_NAME(sys_fchdir)
.long SYMBOL_NAME(sys_bdflush)
.long SYMBOL_NAME(sys_sysfs) /* 135 */
.long SYMBOL_NAME(sys_personality)
.long SYMBOL_NAME(sys_ni_syscall) /* for afs_syscall */
.long SYMBOL_NAME(sys_setfsuid)
.long SYMBOL_NAME(sys_setfsgid)
.long SYMBOL_NAME(sys_llseek) /* 140 */
.long SYMBOL_NAME(sys_getdents)
.long SYMBOL_NAME(sys_select)
.long SYMBOL_NAME(sys_flock)
.long SYMBOL_NAME(sys_msync)
.long SYMBOL_NAME(sys_readv) /* 145 */
.long SYMBOL_NAME(sys_writev)
.long SYMBOL_NAME(sys_getsid)
.long SYMBOL_NAME(sys_fdatasync)
.long SYMBOL_NAME(sys_sysctl)
.long SYMBOL_NAME(sys_mlock) /* 150 */
.long SYMBOL_NAME(sys_munlock)
.long SYMBOL_NAME(sys_mlockall)
.long SYMBOL_NAME(sys_munlockall)
.long SYMBOL_NAME(sys_sched_setparam)
.long SYMBOL_NAME(sys_sched_getparam) /* 155 */
.long SYMBOL_NAME(sys_sched_setscheduler)
.long SYMBOL_NAME(sys_sched_getscheduler)
.long SYMBOL_NAME(sys_sched_yield)
.long SYMBOL_NAME(sys_sched_get_priority_max)
.long SYMBOL_NAME(sys_sched_get_priority_min) /* 160 */
.long SYMBOL_NAME(sys_sched_rr_get_interval)
.long SYMBOL_NAME(sys_nanosleep)
.long SYMBOL_NAME(sys_mremap)
.space (NR_syscalls-163)*4
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