x86-xstate.h

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/* Common code for x86 XSAVE extended state.

   Copyright (C) 2010-2018 Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#ifndef X86_XSTATE_H
#define X86_XSTATE_H 1

/* The extended state feature bits.  */
#define X86_XSTATE_X87      (1ULL << 0)
#define X86_XSTATE_SSE      (1ULL << 1)
#define X86_XSTATE_AVX      (1ULL << 2)
#define X86_XSTATE_BNDREGS  (1ULL << 3)
#define X86_XSTATE_BNDCFG   (1ULL << 4)
#define X86_XSTATE_MPX      (X86_XSTATE_BNDREGS | X86_XSTATE_BNDCFG)

/* AVX 512 adds three feature bits.  All three must be enabled.  */
#define X86_XSTATE_K        (1ULL << 5)
#define X86_XSTATE_ZMM_H    (1ULL << 6)
#define X86_XSTATE_ZMM      (1ULL << 7)
#define X86_XSTATE_AVX512   (X86_XSTATE_K | X86_XSTATE_ZMM_H \
                 | X86_XSTATE_ZMM)

#define X86_XSTATE_PKRU     (1ULL << 9)

/* Supported mask and size of the extended state.  */
#define X86_XSTATE_X87_MASK X86_XSTATE_X87
#define X86_XSTATE_SSE_MASK (X86_XSTATE_X87 | X86_XSTATE_SSE)
#define X86_XSTATE_AVX_MASK (X86_XSTATE_SSE_MASK | X86_XSTATE_AVX)
#define X86_XSTATE_MPX_MASK (X86_XSTATE_SSE_MASK | X86_XSTATE_MPX)
#define X86_XSTATE_AVX_MPX_MASK (X86_XSTATE_AVX_MASK | X86_XSTATE_MPX)
#define X86_XSTATE_AVX_AVX512_MASK  (X86_XSTATE_AVX_MASK | X86_XSTATE_AVX512)
#define X86_XSTATE_AVX_MPX_AVX512_PKU_MASK  (X86_XSTATE_AVX_MPX_MASK\
                    | X86_XSTATE_AVX512 | X86_XSTATE_PKRU)

#define X86_XSTATE_ALL_MASK     (X86_XSTATE_AVX_MPX_AVX512_PKU_MASK)


#define X86_XSTATE_SSE_SIZE 576
#define X86_XSTATE_AVX_SIZE 832
#define X86_XSTATE_BNDREGS_SIZE 1024
#define X86_XSTATE_BNDCFG_SIZE  1088
#define X86_XSTATE_AVX512_SIZE  2688
#define X86_XSTATE_PKRU_SIZE    2696
#define X86_XSTATE_MAX_SIZE 2696


/* In case one of the MPX XCR0 bits is set we consider we have MPX.  */
#define HAS_MPX(XCR0) (((XCR0) & X86_XSTATE_MPX) != 0)
#define HAS_AVX(XCR0) (((XCR0) & X86_XSTATE_AVX) != 0)
#define HAS_AVX512(XCR0) (((XCR0) & X86_XSTATE_AVX512) != 0)
#define HAS_PKRU(XCR0) (((XCR0) & X86_XSTATE_PKRU) != 0)

/* Get I386 XSAVE extended state size.  */
#define X86_XSTATE_SIZE(XCR0) \
    (HAS_PKRU (XCR0) ? X86_XSTATE_PKRU_SIZE : \
     (HAS_AVX512 (XCR0) ? X86_XSTATE_AVX512_SIZE : \
      (HAS_MPX (XCR0) ? X86_XSTATE_BNDCFG_SIZE : \
       (HAS_AVX (XCR0) ? X86_XSTATE_AVX_SIZE : X86_XSTATE_SSE_SIZE))))

#endif /* X86_XSTATE_H */