--- old/usr/src/uts/intel/sys/pcb.h
          +++ new/usr/src/uts/intel/sys/pcb.h

   1    1  /*
   2    2   * CDDL HEADER START
   3    3   *
   4    4   * The contents of this file are subject to the terms of the
   5    5   * Common Development and Distribution License (the "License").
   6    6   * You may not use this file except in compliance with the License.
   7    7   *
   8    8   * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9    9   * or http://www.opensolaris.org/os/licensing.
  10   10   * See the License for the specific language governing permissions
  11   11   * and limitations under the License.
  12   12   *
  13   13   * When distributing Covered Code, include this CDDL HEADER in each
  14   14   * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15   15   * If applicable, add the following below this CDDL HEADER, with the
  16   16   * fields enclosed by brackets "[]" replaced with your own identifying
  17   17   * information: Portions Copyright [yyyy] [name of copyright owner]
  18   18   *
  19   19   * CDDL HEADER END
  20   20   */
  21   21  
  22   22  /*
  23   23   * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
  24   24   * Copyright 2020 Joyent, Inc.
  25   25   */
  26   26  
  27   27  #ifndef _SYS_PCB_H
  28   28  #define _SYS_PCB_H
  29   29  
  30   30  #include <sys/regset.h>
  31   31  #include <sys/segments.h>
  32   32  #ifndef _ASM
  33   33  #include <sys/fp.h>     /* kfpu_t */
  34   34  #endif
  35   35  
  36   36  #ifdef  __cplusplus
  37   37  extern "C" {
  38   38  #endif
  39   39  
  40   40  #ifndef _ASM
  41   41  typedef struct fpu_ctx {
  42   42          kfpu_t          fpu_regs;       /* kernel save area for FPU */
  43   43          uint64_t        fpu_xsave_mask; /* xsave mask for FPU/SSE/AVX */
  44   44          uint_t          fpu_flags;      /* FPU state flags */
  45   45          void            *fpu_signal;    /* copyin area for signal handling */
  46   46  } fpu_ctx_t;
  47   47  
  48   48  typedef struct pcb {
  49   49          fpu_ctx_t       pcb_fpu;        /* fpu state */
  50   50          uint_t          pcb_flags;      /* state flags; cleared on fork */
  51   51          greg_t          pcb_drstat;     /* status debug register (%dr6) */
  52   52          unsigned char   pcb_instr;      /* /proc: instruction at stop */
  53   53          unsigned char   pcb_rupdate;    /* new register values in pcb -> regs */
  54   54          uintptr_t       pcb_fsbase;
  55   55          uintptr_t       pcb_gsbase;
  56   56          selector_t      pcb_ds;
  57   57          selector_t      pcb_es;
  58   58          selector_t      pcb_fs;
  59   59          selector_t      pcb_gs;
  60   60          user_desc_t     pcb_fsdesc;     /* private per-lwp %fs descriptors */
  61   61          user_desc_t     pcb_gsdesc;     /* private per-lwp %gs descriptors */
  62   62  } pcb_t;
  63   63  
  64   64  #endif /* ! _ASM */
  65   65  
  66   66  /* pcb_flags */
  67   67  #define DEBUG_PENDING   0x02    /* single-step of lcall for a sys call */
  68   68  #define PRSTOP_CALLED   0x04    /* prstop() has been called for this lwp */
  69   69  #define INSTR_VALID     0x08    /* value in pcb_instr is valid (/proc) */
  70   70  #define NORMAL_STEP     0x10    /* normal debugger-requested single-step */
  71   71  #define WATCH_STEP      0x20    /* single-stepping in watchpoint emulation */
  72   72  #define CPC_OVERFLOW    0x40    /* performance counters overflowed */
  73   73  #define REQUEST_STEP    0x100   /* request pending to single-step this lwp */
  74   74  #define REQUEST_NOSTEP  0x200   /* request pending to disable single-step */
  75   75  #define ASYNC_HWERR     0x400   /* hardware error has corrupted context  */
  76   76  
  77   77  /* pcb_rupdate values */
  78   78  #define PCB_UPDATE_SEGS 0x01    /* Update segment registers */
  79   79  #define PCB_UPDATE_FPU  0x02    /* Update FPU registers */
  80   80  
  81   81  #define PCB_SET_UPDATE_SEGS(pcb)        ((pcb)->pcb_rupdate |= PCB_UPDATE_SEGS)
  82   82  #define PCB_SET_UPDATE_FPU(pcb)         ((pcb)->pcb_rupdate |= PCB_UPDATE_FPU)
  83   83  #define PCB_NEED_UPDATE_SEGS(pcb)       \
  84   84          (((pcb)->pcb_rupdate & PCB_UPDATE_SEGS) != 0)
  85   85  #define PCB_NEED_UPDATE_FPU(pcb)        \
  86   86          (((pcb)->pcb_rupdate & PCB_UPDATE_FPU) != 0)
  87   87  #define PCB_NEED_UPDATE(pcb)            \
  88   88          (PCB_NEED_UPDATE_FPU(pcb) || PCB_NEED_UPDATE_SEGS(pcb))
  89   89  #define PCB_CLEAR_UPDATE_SEGS(pcb)      ((pcb)->pcb_rupdate &= ~PCB_UPDATE_SEGS)
  90   90  #define PCB_CLEAR_UPDATE_FPU(pcb)       ((pcb)->pcb_rupdate &= ~PCB_UPDATE_FPU)
  91   91  
  92   92  /* fpu_flags */
  93   93  #define FPU_EN          0x01    /* FPU in use (user or kernel) */
  94   94  #define FPU_VALID       0x02    /* fpu_regs has valid fpu state */
  95   95  #define FPU_MODIFIED    0x04    /* fpu_regs is modified (/proc) */
  96   96  #define FPU_KERNEL      0x08    /* Kernel is using the FPU */
  97   97  
  98   98  #define FPU_INVALID     0x0     /* fpu context is not in use */
  99   99  
 100  100  /* fpu_flags */
 101  101  
 102  102  #ifdef  __cplusplus
 103  103  }
 104  104  #endif
 105  105  
 106  106  #endif  /* _SYS_PCB_H */

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