/*
* Copyright (c) 2014 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef KERN_ARCH_ISTATE_STRUCT_H_
#define KERN_ARCH_ISTATE_STRUCT_H_
#define ISTATE_OFFSET_L0 0x00
#define ISTATE_OFFSET_L1 0x08
#define ISTATE_OFFSET_L2 0x10
#define ISTATE_OFFSET_L3 0x18
#define ISTATE_OFFSET_L4 0x20
#define ISTATE_OFFSET_L5 0x28
#define ISTATE_OFFSET_L6 0x30
#define ISTATE_OFFSET_L7 0x38
#define ISTATE_OFFSET_I0 0x40
#define ISTATE_OFFSET_I1 0x48
#define ISTATE_OFFSET_I2 0x50
#define ISTATE_OFFSET_I3 0x58
#define ISTATE_OFFSET_I4 0x60
#define ISTATE_OFFSET_I5 0x68
#define ISTATE_OFFSET_I6 0x70
#define ISTATE_OFFSET_I7 0x78
#define ISTATE_OFFSET_UNDEF_ARG 0x80
#define ISTATE_OFFSET_ARG6 0xb0
#define ISTATE_OFFSET_TNPC 0xb8
#define ISTATE_OFFSET_TPC 0xc0
#define ISTATE_OFFSET_TSTATE 0xc8
#define ISTATE_OFFSET_Y 0xd0
#define ISTATE_OFFSET_O0 0xd8
#define ISTATE_OFFSET_O1 0xe0
#define ISTATE_OFFSET_O2 0xe8
#define ISTATE_OFFSET_O3 0xf0
#define ISTATE_OFFSET_O4 0xf8
#define ISTATE_OFFSET_O5 0x100
#define ISTATE_OFFSET_O6 0x108
#define ISTATE_OFFSET_O7 0x110
#define ISTATE_OFFSET_TLB_TAG_ACCESS 0x118
#define ISTATE_SIZE 0x120
#ifndef __ASSEMBLER__
#include <stdint.h>
#ifdef KERNEL
#include <typedefs.h>
#else
#include <stddef.h>
#endif
typedef struct istate {
/*
* Window save area for locals and inputs. Required by ABI.
* Before using these, make sure that the corresponding register
* window has been spilled into memory, otherwise l0-l7 and
* i0-i7 will have undefined values.
*/
uint64_t l0;
uint64_t l1;
uint64_t l2;
uint64_t l3;
uint64_t l4;
uint64_t l5;
uint64_t l6;
uint64_t l7;
uint64_t i0;
uint64_t i1;
uint64_t i2;
uint64_t i3;
uint64_t i4;
uint64_t i5;
uint64_t i6;
uint64_t i7;
/*
* Six mandatory argument slots, required by the ABI, plus an
* optional argument slot for the 7th argument used by our
* syscalls. Since the preemptible handler is always passing
* integral arguments, undef_arg[0] - undef_arg[5] are always
* undefined.
*/
uint64_t undef_arg[6];
uint64_t arg6;
/*
* From this point onwards, the istate layout is not dicated by
* the ABI. The only requirement is the stack alignment.
*/
uint64_t tnpc;
uint64_t tpc;
uint64_t tstate;
uint64_t y;
/*
* At the moment, these are defined only when needed by the
* preemptible handler, so consider them undefined for now.
*/
uint64_t o0;
uint64_t o1;
uint64_t o2;
uint64_t o3;
uint64_t o4;
uint64_t o5;
uint64_t o6;
uint64_t o7;
/*
* I/DTLB Tag Access register or zero for non-MMU traps.
*/
uint64_t tlb_tag_access;
} istate_t;
#endif
#endif