gdb/amd64-ravenscar-thread.c

   1 /* Ravenscar x86-64 target support.
   2
   3    Copyright (C) 2020-2022 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "defs.h"
  21 #include "gdbarch.h"
  22 #include "gdbcore.h"
  23 #include "regcache.h"
  24 #include "amd64-tdep.h"
  25 #include "inferior.h"
  26 #include "ravenscar-thread.h"
  27 #include "amd64-ravenscar-thread.h"
  28
  29 /* x86-64 Ravenscar stores registers as:
  30
  31    type Context_Buffer is record
  32       RIP    : System.Address;
  33       RFLAGS : EFLAGS;
  34       RSP    : System.Address;
  35
  36       RBX    : System.Address;
  37       RBP    : System.Address;
  38       R12    : System.Address;
  39       R13    : System.Address;
  40       R14    : System.Address;
  41       R15    : System.Address;
  42    end record;
  43 */
  44 static const int register_layout[] =
  45 {
  46   /* RAX */ -1,
  47   /* RBX */ 3 * 8,
  48   /* RCX */ -1,
  49   /* RDX */ -1,
  50   /* RSI */ -1,
  51   /* RDI */ -1,
  52   /* RBP */ 4 * 8,
  53   /* RSP */ 2 * 8,
  54   /* R8 */ -1,
  55   /* R9 */ -1,
  56   /* R10 */ -1,
  57   /* R11 */ -1,
  58   /* R12 */ 5 * 8,
  59   /* R13 */ 6 * 8,
  60   /* R14 */ 7 * 8,
  61   /* R15 */ 8 * 8,
  62   /* RIP */ 0 * 8,
  63   /* EFLAGS */ 1 * 8,
  64 };
  65
  66 /* The ravenscar_arch_ops vector for AMD64 targets.  */
  67
  68 static struct ravenscar_arch_ops amd64_ravenscar_ops (register_layout);
  69
  70 /* Register amd64_ravenscar_ops in GDBARCH.  */
  71
  72 void
  73 register_amd64_ravenscar_ops (struct gdbarch *gdbarch)
  74 {
  75   set_gdbarch_ravenscar_ops (gdbarch, &amd64_ravenscar_ops);
  76 }