5876 sys/regset.h pollutes name space

Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Reviewed by: Jonathan Perkin <jperkin@joyent.com>
Reviewed by: Alexander Pyhalov <alp@sfedu.ru>
Approved by: Albert Lee <trisk@omniti.com>

1 files changed, 191 insertions, 0 deletions

diff --git a/usr/src/uts/intel/sys/mcontext.h b/usr/src/uts/intel/sys/mcontext.h
new file mode 100644
index 0000000000..23d0aba364
--- /dev/null
+++ b/usr/src/uts/intel/sys/mcontext.h
@@ -0,0 +1,191 @@
+/*
+ * 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	*/
+
+/*
+ * Essential struct definitions for mcontext_t needed by ucontext.h
+ * These were formerly in regset.h, which now includes this file.
+ */
+
+#ifndef	_SYS_MCONTEXT_H
+#define	_SYS_MCONTEXT_H
+
+#include <sys/feature_tests.h>
+
+#if !defined(_ASM)
+#include <sys/types.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * A gregset_t is defined as an array type for compatibility with the reference
+ * source. This is important due to differences in the way the C language
+ * treats arrays and structures as parameters.
+ */
+#if defined(__amd64)
+#define	_NGREG	28
+#else
+#define	_NGREG	19
+#endif
+
+#if !defined(_ASM)
+
+#if defined(_LP64) || defined(_I32LPx)
+typedef long	greg_t;
+#else
+typedef int	greg_t;
+#endif
+
+#if defined(_SYSCALL32)
+
+typedef int32_t greg32_t;
+typedef int64_t	greg64_t;
+
+#endif	/* _SYSCALL32 */
+
+typedef greg_t	gregset_t[_NGREG];
+
+#if defined(_SYSCALL32)
+
+#define	_NGREG32	19
+#define	_NGREG64	28
+
+typedef greg32_t gregset32_t[_NGREG32];
+typedef	greg64_t gregset64_t[_NGREG64];
+
+#endif	/* _SYSCALL32 */
+
+/*
+ * Floating point definitions.
+ */
+
+#if defined(__amd64)
+
+typedef struct _fpu {
+	union {
+		struct _fpchip_state {
+			uint16_t cw;
+			uint16_t sw;
+			uint8_t  fctw;
+			uint8_t  __fx_rsvd;
+			uint16_t fop;
+			uint64_t rip;
+			uint64_t rdp;
+			uint32_t mxcsr;
+			uint32_t mxcsr_mask;
+			union {
+				uint16_t fpr_16[5];
+				upad128_t __fpr_pad;
+			} st[8];
+			upad128_t xmm[16];
+			upad128_t __fx_ign2[6];
+			uint32_t status;	/* sw at exception */
+			uint32_t xstatus;	/* mxcsr at exception */
+		} fpchip_state;
+		uint32_t	f_fpregs[130];
+	} fp_reg_set;
+} fpregset_t;
+
+#else	/* __i386 */
+
+/*
+ * This definition of the floating point structure is binary
+ * compatible with the Intel386 psABI definition, and source
+ * compatible with that specification for x87-style floating point.
+ * It also allows SSE/SSE2 state to be accessed on machines that
+ * possess such hardware capabilities.
+ */
+typedef struct _fpu {
+	union {
+		struct _fpchip_state {
+			uint32_t state[27];	/* 287/387 saved state */
+			uint32_t status;	/* saved at exception */
+			uint32_t mxcsr;		/* SSE control and status */
+			uint32_t xstatus;	/* SSE mxcsr at exception */
+			uint32_t __pad[2];	/* align to 128-bits */
+			upad128_t xmm[8];	/* %xmm0-%xmm7 */
+		} fpchip_state;
+		struct _fp_emul_space {		/* for emulator(s) */
+			uint8_t	fp_emul[246];
+			uint8_t	fp_epad[2];
+		} fp_emul_space;
+		uint32_t	f_fpregs[95];	/* union of the above */
+	} fp_reg_set;
+} fpregset_t;
+
+#endif	/* __i386 */
+
+#if defined(_SYSCALL32)
+
+/* Kernel view of user i386 fpu structure */
+
+typedef struct fpu32 {
+	union {
+		struct fpchip32_state {
+			uint32_t state[27];	/* 287/387 saved state */
+			uint32_t status;	/* saved at exception */
+			uint32_t mxcsr;		/* SSE control and status */
+			uint32_t xstatus;	/* SSE mxcsr at exception */
+			uint32_t __pad[2];	/* align to 128-bits */
+			uint32_t xmm[8][4];	/* %xmm0-%xmm7 */
+		} fpchip_state;
+		uint32_t	f_fpregs[95];	/* union of the above */
+	} fp_reg_set;
+} fpregset32_t;
+
+#endif	/* _SYSCALL32 */
+
+/*
+ * Structure mcontext defines the complete hardware machine state.
+ * (This structure is specified in the i386 ABI suppl.)
+ */
+typedef struct {
+	gregset_t	gregs;		/* general register set */
+	fpregset_t	fpregs;		/* floating point register set */
+} mcontext_t;
+
+#if defined(_SYSCALL32)
+
+typedef struct {
+	gregset32_t	gregs;		/* general register set */
+	fpregset32_t	fpregs;		/* floating point register set */
+} mcontext32_t;
+
+#endif	/* _SYSCALL32 */
+
+#endif	/* _ASM */
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* _SYS_MCONTEXT_H */