gdb/ppc-ravenscar-thread.c

   1 /* Ravenscar PowerPC target support.
   2
   3    Copyright (C) 2011-2023 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 "gdbcore.h"
  22 #include "regcache.h"
  23 #include "ppc-tdep.h"
  24 #include "inferior.h"
  25 #include "ravenscar-thread.h"
  26 #include "ppc-ravenscar-thread.h"
  27
  28 #define NO_OFFSET -1
  29
  30 /* See ppc-tdep.h for register numbers.  */
  31
  32 static const int powerpc_context_offsets[] =
  33 {
  34   /* R0 - R32 */
  35   NO_OFFSET, 0,         4,         NO_OFFSET,
  36   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  37   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  38   NO_OFFSET, 8,         12,        16,
  39   20,        24,        28,        32,
  40   36,        40,        44,        48,
  41   52,        56,        60,        64,
  42   68,        72,        76,        80,
  43
  44   /* F0 - F31 */
  45   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  46   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  47   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  48   NO_OFFSET, NO_OFFSET, 96,        104,
  49   112,       120,       128,       136,
  50   144,       152,       160,       168,
  51   176,       184,       192,       200,
  52   208,       216,       224,       232,
  53
  54   /* PC, MSR, CR, LR */
  55   88,        NO_OFFSET, 84,        NO_OFFSET,
  56
  57   /* CTR, XER, FPSCR  */
  58   NO_OFFSET, NO_OFFSET, 240
  59 };
  60
  61 static const int e500_context_offsets[] =
  62 {
  63   /* R0 - R32 */
  64   NO_OFFSET, 4,         12,        NO_OFFSET,
  65   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  66   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  67   NO_OFFSET, 20,        28,        36,
  68   44,        52,        60,        68,
  69   76,        84,        92,        100,
  70   108,       116,       124,       132,
  71   140,       148,       156,       164,
  72
  73   /* F0 - F31 */
  74   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  75   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  76   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  77   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  78   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  79   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  80   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  81   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  82
  83   /* PC, MSR, CR, LR */
  84   172,       NO_OFFSET, 168,       NO_OFFSET,
  85
  86   /* CTR, XER, FPSCR, MQ  */
  87   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  88
  89   /* Upper R0-R32.  */
  90   NO_OFFSET, 0,         8,        NO_OFFSET,
  91   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  92   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  93   NO_OFFSET, 16,        24,        32,
  94   40,        48,        56,        64,
  95   72,        80,        88,        96,
  96   104,       112,       120,       128,
  97   136,       144,       152,       160,
  98
  99   /* ACC, FSCR */
 100   NO_OFFSET, 176
 101 };
 102
 103 /* The ravenscar_arch_ops vector for most PowerPC targets.  */
 104
 105 static struct ravenscar_arch_ops ppc_ravenscar_powerpc_ops
 106      (powerpc_context_offsets);
 107
 108 /* Register ppc_ravenscar_powerpc_ops in GDBARCH.  */
 109
 110 void
 111 register_ppc_ravenscar_ops (struct gdbarch *gdbarch)
 112 {
 113   set_gdbarch_ravenscar_ops (gdbarch, &ppc_ravenscar_powerpc_ops);
 114 }
 115
 116 /* The ravenscar_arch_ops vector for E500 targets.  */
 117
 118 static struct ravenscar_arch_ops ppc_ravenscar_e500_ops (e500_context_offsets);
 119
 120 /* Register ppc_ravenscar_e500_ops in GDBARCH.  */
 121
 122 void
 123 register_e500_ravenscar_ops (struct gdbarch *gdbarch)
 124 {
 125   set_gdbarch_ravenscar_ops (gdbarch, &ppc_ravenscar_e500_ops);
 126 }