45897edf72
and to make user-level trap handlers work - add new trap entry to trap table to enable fast fetching of floating point trap context - remove unused debug code - map unimplemented floating point trap to SIGFPE Approved by: scottl (standing in for mentor rwatson)
150 lines
4.9 KiB
C
150 lines
4.9 KiB
C
/*-
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* Copyright (c) 2001 Jake Burkholder.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_TRAP_H_
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#define _MACHINE_TRAP_H_
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#ifdef _KERNEL
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#define T_RESERVED 0
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#define T_INSTRUCTION_EXCEPTION 1
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#define T_INSTRUCTION_ERROR 2
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#define T_INSTRUCTION_PROTECTION 3
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#define T_ILLTRAP_INSTRUCTION 4
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#define T_ILLEGAL_INSTRUCTION 5
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#define T_PRIVILEGED_OPCODE 6
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#define T_FP_DISABLED 7
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#define T_FP_EXCEPTION_IEEE_754 8
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#define T_FP_EXCEPTION_OTHER 9
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#define T_TAG_OVERFLOW 10
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#define T_DIVISION_BY_ZERO 11
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#define T_DATA_EXCEPTION 12
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#define T_DATA_ERROR 13
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#define T_DATA_PROTECTION 14
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#define T_MEM_ADDRESS_NOT_ALIGNED 15
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#define T_ALIGNMENT 15
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#define T_PRIVILEGED_ACTION 16
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#define T_ASYNC_DATA_ERROR 17
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#define T_TRAP_INSTRUCTION_16 18
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#define T_TRAP_INSTRUCTION_17 19
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#define T_TRAP_INSTRUCTION_18 20
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#define T_TRAP_INSTRUCTION_19 21
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#define T_TRAP_INSTRUCTION_20 22
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#define T_TRAP_INSTRUCTION_21 23
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#define T_TRAP_INSTRUCTION_22 24
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#define T_TRAP_INSTRUCTION_23 25
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#define T_TRAP_INSTRUCTION_24 26
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#define T_TRAP_INSTRUCTION_25 27
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#define T_TRAP_INSTRUCTION_26 28
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#define T_TRAP_INSTRUCTION_27 29
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#define T_TRAP_INSTRUCTION_28 30
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#define T_TRAP_INSTRUCTION_29 31
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#define T_TRAP_INSTRUCTION_30 32
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#define T_TRAP_INSTRUCTION_31 33
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#define T_INSTRUCTION_MISS 34
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#define T_DATA_MISS 35
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#define T_INTERRUPT 36
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#define T_PA_WATCHPOINT 37
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#define T_VA_WATCHPOINT 38
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#define T_CORRECTED_ECC_ERROR 39
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#define T_SPILL 40
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#define T_FILL 41
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#define T_FILL_RET 42
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#define T_BREAKPOINT 43
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#define T_CLEAN_WINDOW 44
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#define T_RANGE_CHECK 45
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#define T_FIX_ALIGNMENT 46
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#define T_INTEGER_OVERFLOW 47
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#define T_SYSCALL 48
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#define T_RSTRWP_PHYS 49
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#define T_RSTRWP_VIRT 50
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#define T_KSTACK_FAULT 51
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#define T_RESUMABLE_ERROR 52
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#define T_NONRESUMABLE_ERROR 53
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#define T_MAX (T_NONRESUMABLE_ERROR + 1)
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#define T_KERNEL 64
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#define TRAP_MASK ((1<<6)-1)
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#define TRAP_CTX_SHIFT 8
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/*
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* These defines are used by the TL1 tlb miss handlers to calculate
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* the pc to jump to in the case the entry was not found in the TSB.
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*/
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#define WTRAP_ALIGN 0x7f /* window handlers are 128 byte align */
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#define WTRAP_FAULTOFF 124 /* last instruction in handler */
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/* use the following defines to determine if trap was a fill or a spill */
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#define WTRAP_TTMASK 0x180
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#define WTRAP_TYPE 0x080
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#define TT_INSTRUCTION_EXCEPTION 0x8
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#define TT_INSTRUCTION_MISS 0x9
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#define TT_ILLEGAL_INSTRUCTION 0x10
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#define TT_PRIVILEGED_OPCODE 0x11
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#define TT_FP_EXCEPTION_IEEE_754 0x21
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#define TT_FP_EXCEPTION_OTHER 0x22
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#define TT_TAG_OVERFLOW 0x23
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#define TT_DIVISION_BY_ZERO 0x28
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#define TT_DATA_EXCEPTION 0x30
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#define TT_DATA_MISS 0x31
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#define TT_ALIGNNMENT 0x34
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#define TT_DATA_PROTECTION 0x6c
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#define TT_ALIGNMENT 0x6c
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#define TT_BREAKPOINT 0x76
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#define PTL1_BAD_DEBUG 0
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#define PTL1_BAD_WTRAP 1
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#define PTL1_BAD_KMISS 2
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#define PTL1_BAD_KPROT_FAULT 3
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#define PTL1_BAD_ISM 4
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#define PTL1_BAD_MMUTRAP 5
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#define PTL1_BAD_TRAP 6
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#define PTL1_BAD_FPTRAP 7
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#define PTL1_BAD_INTR_REQ 8
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#define PTL1_BAD_TRACE_PTR 9
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#define PTL1_BAD_STACK 10
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#define PTL1_BAD_DTRACE_FLAGS 11
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#define PTL1_BAD_CTX_STEAL 12
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#define PTL1_BAD_ECC 13
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#define PTL1_BAD_HCALL 14
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#define PTL1_BAD_GL 15
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#ifndef LOCORE
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extern const char *trap_msg[];
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extern void trap_init(void);
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#endif
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#endif
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#endif /* !_MACHINE_TRAP_H_ */
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