xref: /illumos-gate/usr/src/uts/intel/sys/regset.h (revision bbf21555)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
57af88ac7SKuriakose Kuruvilla  * Common Development and Distribution License (the "License").
67af88ac7SKuriakose Kuruvilla  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
217c478bd9Sstevel@tonic-gate /*
22bc0e9132SGordon Ross  * Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
23bc0e9132SGordon Ross  *
247af88ac7SKuriakose Kuruvilla  * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
257c478bd9Sstevel@tonic-gate  */
267c478bd9Sstevel@tonic-gate /*	Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
287c478bd9Sstevel@tonic-gate /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T		*/
297c478bd9Sstevel@tonic-gate /*	All Rights Reserved	*/
317c478bd9Sstevel@tonic-gate #ifndef	_SYS_REGSET_H
327c478bd9Sstevel@tonic-gate #define	_SYS_REGSET_H
347c478bd9Sstevel@tonic-gate #include <sys/feature_tests.h>
367c478bd9Sstevel@tonic-gate #if !defined(_ASM)
377c478bd9Sstevel@tonic-gate #include <sys/types.h>
387c478bd9Sstevel@tonic-gate #endif
39bc0e9132SGordon Ross #include <sys/mcontext.h>
417c478bd9Sstevel@tonic-gate #ifdef __cplusplus
427c478bd9Sstevel@tonic-gate extern "C" {
437c478bd9Sstevel@tonic-gate #endif
457c478bd9Sstevel@tonic-gate /*
467c478bd9Sstevel@tonic-gate  * The names and offsets defined here should be specified by the
477c478bd9Sstevel@tonic-gate  * AMD64 ABI suppl.
487c478bd9Sstevel@tonic-gate  *
497c478bd9Sstevel@tonic-gate  * We make fsbase and gsbase part of the lwp context (since they're
507c478bd9Sstevel@tonic-gate  * the only way to access the full 64-bit address range via the segment
517c478bd9Sstevel@tonic-gate  * registers) and thus belong here too.  However we treat them as
527c478bd9Sstevel@tonic-gate  * read-only; if %fs or %gs are updated, the results of the descriptor
537c478bd9Sstevel@tonic-gate  * table lookup that those updates implicitly cause will be reflected
547c478bd9Sstevel@tonic-gate  * in the corresponding fsbase and/or gsbase values the next time the
557c478bd9Sstevel@tonic-gate  * context can be inspected.  However it is NOT possible to override
567c478bd9Sstevel@tonic-gate  * the fsbase/gsbase settings via this interface.
577c478bd9Sstevel@tonic-gate  *
587c478bd9Sstevel@tonic-gate  * Direct modification of the base registers (thus overriding the
597c478bd9Sstevel@tonic-gate  * descriptor table base address) can be achieved with _lwp_setprivate.
607c478bd9Sstevel@tonic-gate  */
627c478bd9Sstevel@tonic-gate #define	REG_GSBASE	27
637c478bd9Sstevel@tonic-gate #define	REG_FSBASE	26
647c478bd9Sstevel@tonic-gate #define	REG_DS		25
657c478bd9Sstevel@tonic-gate #define	REG_ES		24
677c478bd9Sstevel@tonic-gate #define	REG_GS		23
687c478bd9Sstevel@tonic-gate #define	REG_FS		22
697c478bd9Sstevel@tonic-gate #define	REG_SS		21
707c478bd9Sstevel@tonic-gate #define	REG_RSP		20
717c478bd9Sstevel@tonic-gate #define	REG_RFL		19
727c478bd9Sstevel@tonic-gate #define	REG_CS		18
737c478bd9Sstevel@tonic-gate #define	REG_RIP		17
747c478bd9Sstevel@tonic-gate #define	REG_ERR		16
757c478bd9Sstevel@tonic-gate #define	REG_TRAPNO	15
767c478bd9Sstevel@tonic-gate #define	REG_RAX		14
777c478bd9Sstevel@tonic-gate #define	REG_RCX		13
787c478bd9Sstevel@tonic-gate #define	REG_RDX		12
797c478bd9Sstevel@tonic-gate #define	REG_RBX		11
807c478bd9Sstevel@tonic-gate #define	REG_RBP		10
817c478bd9Sstevel@tonic-gate #define	REG_RSI		9
827c478bd9Sstevel@tonic-gate #define	REG_RDI		8
837c478bd9Sstevel@tonic-gate #define	REG_R8		7
847c478bd9Sstevel@tonic-gate #define	REG_R9		6
857c478bd9Sstevel@tonic-gate #define	REG_R10		5
867c478bd9Sstevel@tonic-gate #define	REG_R11		4
877c478bd9Sstevel@tonic-gate #define	REG_R12		3
887c478bd9Sstevel@tonic-gate #define	REG_R13		2
897c478bd9Sstevel@tonic-gate #define	REG_R14		1
907c478bd9Sstevel@tonic-gate #define	REG_R15		0
927c478bd9Sstevel@tonic-gate /*
937c478bd9Sstevel@tonic-gate  * The names and offsets defined here are specified by i386 ABI suppl.
947c478bd9Sstevel@tonic-gate  */
967c478bd9Sstevel@tonic-gate #define	SS		18	/* only stored on a privilege transition */
977c478bd9Sstevel@tonic-gate #define	UESP		17	/* only stored on a privilege transition */
987c478bd9Sstevel@tonic-gate #define	EFL		16
997c478bd9Sstevel@tonic-gate #define	CS		15
1007c478bd9Sstevel@tonic-gate #define	EIP		14
1017c478bd9Sstevel@tonic-gate #define	ERR		13
1027c478bd9Sstevel@tonic-gate #define	TRAPNO		12
1037c478bd9Sstevel@tonic-gate #define	EAX		11
1047c478bd9Sstevel@tonic-gate #define	ECX		10
1057c478bd9Sstevel@tonic-gate #define	EDX		9
1067c478bd9Sstevel@tonic-gate #define	EBX		8
1077c478bd9Sstevel@tonic-gate #define	ESP		7
1087c478bd9Sstevel@tonic-gate #define	EBP		6
1097c478bd9Sstevel@tonic-gate #define	ESI		5
1107c478bd9Sstevel@tonic-gate #define	EDI		4
1117c478bd9Sstevel@tonic-gate #define	DS		3
1127c478bd9Sstevel@tonic-gate #define	ES		2
1137c478bd9Sstevel@tonic-gate #define	FS		1
1147c478bd9Sstevel@tonic-gate #define	GS		0
1167c478bd9Sstevel@tonic-gate /* aliases for portability */
1187c478bd9Sstevel@tonic-gate #if defined(__amd64)
1207c478bd9Sstevel@tonic-gate #define	REG_PC	REG_RIP
1217c478bd9Sstevel@tonic-gate #define	REG_FP	REG_RBP
1227c478bd9Sstevel@tonic-gate #define	REG_SP	REG_RSP
1237c478bd9Sstevel@tonic-gate #define	REG_PS	REG_RFL
1247c478bd9Sstevel@tonic-gate #define	REG_R0	REG_RAX
1257c478bd9Sstevel@tonic-gate #define	REG_R1	REG_RDX
1277c478bd9Sstevel@tonic-gate #else	/* __i386 */
1297c478bd9Sstevel@tonic-gate #define	REG_PC	EIP
1307c478bd9Sstevel@tonic-gate #define	REG_FP	EBP
1317c478bd9Sstevel@tonic-gate #define	REG_SP	UESP
1327c478bd9Sstevel@tonic-gate #define	REG_PS	EFL
1337c478bd9Sstevel@tonic-gate #define	REG_R0	EAX
1347c478bd9Sstevel@tonic-gate #define	REG_R1	EDX
1367c478bd9Sstevel@tonic-gate #endif	/* __i386 */
1387c478bd9Sstevel@tonic-gate #define	NGREG	_NGREG
1407c478bd9Sstevel@tonic-gate #if !defined(_ASM)
142bc0e9132SGordon Ross #ifdef	__i386
1437c478bd9Sstevel@tonic-gate /*
1447c478bd9Sstevel@tonic-gate  * (This structure definition is specified in the i386 ABI supplement)
145bc0e9132SGordon Ross  * It's likely we can just get rid of the struct __old_fpu or maybe
146f0089e39SRichard Lowe  * move it to $SRC/uts/intel/os/fpu.c which appears to be the
147bc0e9132SGordon Ross  * only place that uses it.  See: www.illumos.org/issues/6284
1487c478bd9Sstevel@tonic-gate  */
1497c478bd9Sstevel@tonic-gate typedef struct __old_fpu {
1507c478bd9Sstevel@tonic-gate 	union {
1517c478bd9Sstevel@tonic-gate 		struct __old_fpchip_state	/* fp extension state */
1527c478bd9Sstevel@tonic-gate 		{
153f0089e39SRichard Lowe 			int	state[27];	/* 287/387 saved state */
154f0089e39SRichard Lowe 			int	status;		/* status word saved at */
1557c478bd9Sstevel@tonic-gate 						/* exception */
1567c478bd9Sstevel@tonic-gate 		} fpchip_state;
1577c478bd9Sstevel@tonic-gate 		struct __old_fp_emul_space	/* for emulator(s) */
1587c478bd9Sstevel@tonic-gate 		{
1597c478bd9Sstevel@tonic-gate 			char	fp_emul[246];
1607c478bd9Sstevel@tonic-gate 			char	fp_epad[2];
1617c478bd9Sstevel@tonic-gate 		} fp_emul_space;
162f0089e39SRichard Lowe 		int	f_fpregs[62];		/* union of the above */
1637c478bd9Sstevel@tonic-gate 	} fp_reg_set;
164f0089e39SRichard Lowe 	long		f_wregs[33];		/* saved weitek state */
1657c478bd9Sstevel@tonic-gate } __old_fpregset_t;
1667c478bd9Sstevel@tonic-gate #endif	/* __i386 */
1687c478bd9Sstevel@tonic-gate #if defined(__amd64)
169bc0e9132SGordon Ross #define	_NDEBUGREG	16
1707c478bd9Sstevel@tonic-gate #else
171bc0e9132SGordon Ross #define	_NDEBUGREG	8
1727c478bd9Sstevel@tonic-gate #endif
1747c478bd9Sstevel@tonic-gate typedef struct dbregset {
175bc0e9132SGordon Ross 	unsigned long	debugreg[_NDEBUGREG];
1767c478bd9Sstevel@tonic-gate } dbregset_t;
1787c478bd9Sstevel@tonic-gate #endif	/* _ASM */
1807c478bd9Sstevel@tonic-gate /*
1817c478bd9Sstevel@tonic-gate  * The version of privregs.h that is used on implementations that run on
1827c478bd9Sstevel@tonic-gate  * processors that support the AMD64 instruction set is deliberately not
1837c478bd9Sstevel@tonic-gate  * imported here.
1847c478bd9Sstevel@tonic-gate  *
1857c478bd9Sstevel@tonic-gate  * The amd64 'struct regs' definition may -not- compatible with either
1867c478bd9Sstevel@tonic-gate  * 32-bit or 64-bit core file contents, nor with the ucontext.  As a result,
1877c478bd9Sstevel@tonic-gate  * the 'regs' structure cannot be used portably by applications, and should
1887c478bd9Sstevel@tonic-gate  * only be used by the kernel implementation.
1897c478bd9Sstevel@tonic-gate  *
1907c478bd9Sstevel@tonic-gate  * The inclusion of the i386 version of privregs.h allows for some limited
1917c478bd9Sstevel@tonic-gate  * source compatibility with 32-bit applications who expect to use
1927c478bd9Sstevel@tonic-gate  * 'struct regs' to match the context of a 32-bit core file, or a ucontext_t.
1937c478bd9Sstevel@tonic-gate  *
1947c478bd9Sstevel@tonic-gate  * Note that the ucontext_t actually describes the general register in terms
1957c478bd9Sstevel@tonic-gate  * of the gregset_t data type, as described in this file.  Note also
196*bbf21555SRichard Lowe  * that the core file content is defined by core(5) in terms of data types
197*bbf21555SRichard Lowe  * defined by procfs -- see proc(5).
1987c478bd9Sstevel@tonic-gate  */
1997c478bd9Sstevel@tonic-gate #if defined(__i386) && \
2007c478bd9Sstevel@tonic-gate 	(!defined(_KERNEL) && !defined(_XPG4_2) || defined(__EXTENSIONS__))
2017c478bd9Sstevel@tonic-gate #include <sys/privregs.h>
2027c478bd9Sstevel@tonic-gate #endif	/* __i386 (!_KERNEL && !_XPG4_2 || __EXTENSIONS__) */
2047c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
2057c478bd9Sstevel@tonic-gate }
2067c478bd9Sstevel@tonic-gate #endif
2087c478bd9Sstevel@tonic-gate #endif	/* _SYS_REGSET_H */