sys/arm64/include/ucontext.h

   1 /*-
   2  * Copyright (c) 2014 Andrew Turner
   3  * Copyright (c) 2014-2015 The FreeBSD Foundation
   4  * All rights reserved.
   5  *
   6  * This software was developed by Andrew Turner under
   7  * sponsorship from the FreeBSD Foundation.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  */
  30
  31 #ifdef __arm__
  32 #include <arm/ucontext.h>
  33 #else /* !__arm__ */
  34
  35 #ifndef _MACHINE_UCONTEXT_H_
  36 #define _MACHINE_UCONTEXT_H_
  37
  38 struct gpregs {
  39         __register_t    gp_x[30];
  40         __register_t    gp_lr;
  41         __register_t    gp_sp;
  42         __register_t    gp_elr;
  43         __uint64_t      gp_spsr;
  44 };
  45
  46 struct fpregs {
  47         __uint128_t     fp_q[32];
  48         __uint32_t      fp_sr;
  49         __uint32_t      fp_cr;
  50         int             fp_flags;
  51         int             fp_pad;
  52 };
  53
  54 /*
  55  * Support for registers that don't fit into gpregs or fpregs, e.g. SVE.
  56  * There are some registers that have been added so are optional. To support
  57  * these create an array of headers that point at the register data.
  58  */
  59 struct arm64_reg_context {
  60         __uint32_t      ctx_id;
  61         __uint32_t      ctx_size;
  62 };
  63
  64 #define ARM64_CTX_END           0xa5a5a5a5
  65 #define ARM64_CTX_SVE           0x00657673
  66
  67 struct sve_context {
  68         struct arm64_reg_context sve_ctx;
  69         __uint16_t      sve_vector_len;
  70         __uint16_t      sve_flags;
  71         __uint16_t      sve_reserved[2];
  72 };
  73
  74 struct __mcontext {
  75         struct gpregs   mc_gpregs;
  76         struct fpregs   mc_fpregs;
  77         int             mc_flags;
  78 #define _MC_FP_VALID    0x1             /* Set when mc_fpregs has valid data */
  79         int             mc_pad;         /* Padding */
  80         __uint64_t      mc_ptr;         /* Address of extra_regs struct */
  81         __uint64_t      mc_spare[7];    /* Space for expansion, set to zero */
  82 };
  83
  84
  85 typedef struct __mcontext mcontext_t;
  86
  87 #ifdef COMPAT_FREEBSD32
  88 #include <compat/freebsd32/freebsd32_signal.h>
  89 typedef struct __mcontext32 {
  90         uint32_t                mc_gregset[17];
  91         uint32_t                mc_vfp_size;
  92         uint32_t                mc_vfp_ptr;
  93         uint32_t                mc_spare[33];
  94 } mcontext32_t;
  95
  96 typedef struct __ucontext32 {
  97         sigset_t                uc_sigmask;
  98         mcontext32_t            uc_mcontext;
  99         u_int32_t               uc_link;
 100         struct sigaltstack32    uc_stack;
 101         u_int32_t               uc_flags;
 102         u_int32_t               __spare__[4];
 103 } ucontext32_t;
 104
 105 typedef struct __mcontext32_vfp {
 106         __uint64_t      mcv_reg[32];
 107         __uint32_t      mcv_fpscr;
 108 } mcontext32_vfp_t;
 109
 110 #endif /* COMPAT_FREEBSD32 */
 111
 112 #endif  /* !_MACHINE_UCONTEXT_H_ */
 113
 114 #endif /* !__arm__ */