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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2015 Nexenta Systems, Inc. All rights reserved.
*
* Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
*/
/* Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#ifndef _SYS_REGSET_H
#define _SYS_REGSET_H
#include <sys/feature_tests.h>
#if !defined(_ASM)
#include <sys/types.h>
#endif
#include <sys/mcontext.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* The names and offsets defined here should be specified by the
* AMD64 ABI suppl.
*
* We make fsbase and gsbase part of the lwp context (since they're
* the only way to access the full 64-bit address range via the segment
* registers) and thus belong here too. However we treat them as
* read-only; if %fs or %gs are updated, the results of the descriptor
* table lookup that those updates implicitly cause will be reflected
* in the corresponding fsbase and/or gsbase values the next time the
* context can be inspected. However it is NOT possible to override
* the fsbase/gsbase settings via this interface.
*
* Direct modification of the base registers (thus overriding the
* descriptor table base address) can be achieved with _lwp_setprivate.
*/
#define REG_GSBASE 27
#define REG_FSBASE 26
#define REG_DS 25
#define REG_ES 24
#define REG_GS 23
#define REG_FS 22
#define REG_SS 21
#define REG_RSP 20
#define REG_RFL 19
#define REG_CS 18
#define REG_RIP 17
#define REG_ERR 16
#define REG_TRAPNO 15
#define REG_RAX 14
#define REG_RCX 13
#define REG_RDX 12
#define REG_RBX 11
#define REG_RBP 10
#define REG_RSI 9
#define REG_RDI 8
#define REG_R8 7
#define REG_R9 6
#define REG_R10 5
#define REG_R11 4
#define REG_R12 3
#define REG_R13 2
#define REG_R14 1
#define REG_R15 0
/*
* The names and offsets defined here are specified by i386 ABI suppl.
*/
#define SS 18 /* only stored on a privilege transition */
#define UESP 17 /* only stored on a privilege transition */
#define EFL 16
#define CS 15
#define EIP 14
#define ERR 13
#define TRAPNO 12
#define EAX 11
#define ECX 10
#define EDX 9
#define EBX 8
#define ESP 7
#define EBP 6
#define ESI 5
#define EDI 4
#define DS 3
#define ES 2
#define FS 1
#define GS 0
/* aliases for portability */
#if defined(__amd64)
#define REG_PC REG_RIP
#define REG_FP REG_RBP
#define REG_SP REG_RSP
#define REG_PS REG_RFL
#define REG_R0 REG_RAX
#define REG_R1 REG_RDX
#else /* __i386 */
#define REG_PC EIP
#define REG_FP EBP
#define REG_SP UESP
#define REG_PS EFL
#define REG_R0 EAX
#define REG_R1 EDX
#endif /* __i386 */
#define NGREG _NGREG
#if !defined(_ASM)
#ifdef __i386
/*
* (This structure definition is specified in the i386 ABI supplement)
* It's likely we can just get rid of the struct __old_fpu or maybe
* move it to $SRC/uts/intel/os/fpu.c which appears to be the
* only place that uses it. See: www.illumos.org/issues/6284
*/
typedef struct __old_fpu {
union {
struct __old_fpchip_state /* fp extension state */
{
int state[27]; /* 287/387 saved state */
int status; /* status word saved at */
/* exception */
} fpchip_state;
struct __old_fp_emul_space /* for emulator(s) */
{
char fp_emul[246];
char fp_epad[2];
} fp_emul_space;
int f_fpregs[62]; /* union of the above */
} fp_reg_set;
long f_wregs[33]; /* saved weitek state */
} __old_fpregset_t;
#endif /* __i386 */
#if defined(__amd64)
#define _NDEBUGREG 16
#else
#define _NDEBUGREG 8
#endif
typedef struct dbregset {
unsigned long debugreg[_NDEBUGREG];
} dbregset_t;
#endif /* _ASM */
/*
* The version of privregs.h that is used on implementations that run on
* processors that support the AMD64 instruction set is deliberately not
* imported here.
*
* The amd64 'struct regs' definition may -not- compatible with either
* 32-bit or 64-bit core file contents, nor with the ucontext. As a result,
* the 'regs' structure cannot be used portably by applications, and should
* only be used by the kernel implementation.
*
* The inclusion of the i386 version of privregs.h allows for some limited
* source compatibility with 32-bit applications who expect to use
* 'struct regs' to match the context of a 32-bit core file, or a ucontext_t.
*
* Note that the ucontext_t actually describes the general register in terms
* of the gregset_t data type, as described in this file. Note also
* that the core file content is defined by core(5) in terms of data types
* defined by procfs -- see proc(5).
*/
#if defined(__i386) && \
(!defined(_KERNEL) && !defined(_XPG4_2) || defined(__EXTENSIONS__))
#include <sys/privregs.h>
#endif /* __i386 (!_KERNEL && !_XPG4_2 || __EXTENSIONS__) */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_REGSET_H */
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