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      1 /* Ravenscar x86-64 target support.
      2 
      3    Copyright (C) 2020-2024 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 "gdbarch.h"
     21 #include "gdbcore.h"
     22 #include "regcache.h"
     23 #include "amd64-tdep.h"
     24 #include "inferior.h"
     25 #include "ravenscar-thread.h"
     26 #include "amd64-ravenscar-thread.h"
     27 
     28 /* x86-64 Ravenscar stores registers as:
     29 
     30    type Context_Buffer is record
     31       RIP    : System.Address;
     32       RFLAGS : EFLAGS;
     33       RSP    : System.Address;
     34 
     35       RBX    : System.Address;
     36       RBP    : System.Address;
     37       R12    : System.Address;
     38       R13    : System.Address;
     39       R14    : System.Address;
     40       R15    : System.Address;
     41    end record;
     42 */
     43 static const int register_layout[] =
     44 {
     45   /* RAX */ -1,
     46   /* RBX */ 3 * 8,
     47   /* RCX */ -1,
     48   /* RDX */ -1,
     49   /* RSI */ -1,
     50   /* RDI */ -1,
     51   /* RBP */ 4 * 8,
     52   /* RSP */ 2 * 8,
     53   /* R8 */ -1,
     54   /* R9 */ -1,
     55   /* R10 */ -1,
     56   /* R11 */ -1,
     57   /* R12 */ 5 * 8,
     58   /* R13 */ 6 * 8,
     59   /* R14 */ 7 * 8,
     60   /* R15 */ 8 * 8,
     61   /* RIP */ 0 * 8,
     62   /* EFLAGS */ 1 * 8,
     63 };
     64 
     65 /* The ravenscar_arch_ops vector for AMD64 targets.  */
     66 
     67 static struct ravenscar_arch_ops amd64_ravenscar_ops (register_layout);
     68 
     69 /* Register amd64_ravenscar_ops in GDBARCH.  */
     70 
     71 void
     72 register_amd64_ravenscar_ops (struct gdbarch *gdbarch)
     73 {
     74   set_gdbarch_ravenscar_ops (gdbarch, &amd64_ravenscar_ops);
     75 }
     76