gdb/ppc-ravenscar-thread.c

   1 /* Ravenscar PowerPC target support.
   2
   3    Copyright (C) 2011-2024 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 "gdbcore.h"
  21 #include "regcache.h"
  22 #include "ppc-tdep.h"
  23 #include "inferior.h"
  24 #include "ravenscar-thread.h"
  25 #include "ppc-ravenscar-thread.h"
  26
  27 #define NO_OFFSET -1
  28
  29 /* See ppc-tdep.h for register numbers.  */
  30
  31 static const int powerpc_context_offsets[] =
  32 {
  33   /* R0 - R32 */
  34   NO_OFFSET, 0,         4,         NO_OFFSET,
  35   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  36   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  37   NO_OFFSET, 8,         12,        16,
  38   20,        24,        28,        32,
  39   36,        40,        44,        48,
  40   52,        56,        60,        64,
  41   68,        72,        76,        80,
  42
  43   /* F0 - F31 */
  44   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  45   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  46   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  47   NO_OFFSET, NO_OFFSET, 96,        104,
  48   112,       120,       128,       136,
  49   144,       152,       160,       168,
  50   176,       184,       192,       200,
  51   208,       216,       224,       232,
  52
  53   /* PC, MSR, CR, LR */
  54   88,        NO_OFFSET, 84,        NO_OFFSET,
  55
  56   /* CTR, XER, FPSCR  */
  57   NO_OFFSET, NO_OFFSET, 240
  58 };
  59
  60 static const int e500_context_offsets[] =
  61 {
  62   /* R0 - R32 */
  63   NO_OFFSET, 4,         12,        NO_OFFSET,
  64   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  65   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  66   NO_OFFSET, 20,        28,        36,
  67   44,        52,        60,        68,
  68   76,        84,        92,        100,
  69   108,       116,       124,       132,
  70   140,       148,       156,       164,
  71
  72   /* F0 - F31 */
  73   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  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
  82   /* PC, MSR, CR, LR */
  83   172,       NO_OFFSET, 168,       NO_OFFSET,
  84
  85   /* CTR, XER, FPSCR, MQ  */
  86   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  87
  88   /* Upper R0-R32.  */
  89   NO_OFFSET, 0,         8,        NO_OFFSET,
  90   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  91   NO_OFFSET, NO_OFFSET, NO_OFFSET, NO_OFFSET,
  92   NO_OFFSET, 16,        24,        32,
  93   40,        48,        56,        64,
  94   72,        80,        88,        96,
  95   104,       112,       120,       128,
  96   136,       144,       152,       160,
  97
  98   /* ACC, FSCR */
  99   NO_OFFSET, 176
 100 };
 101
 102 /* The ravenscar_arch_ops vector for most PowerPC targets.  */
 103
 104 static struct ravenscar_arch_ops ppc_ravenscar_powerpc_ops
 105      (powerpc_context_offsets);
 106
 107 /* Register ppc_ravenscar_powerpc_ops in GDBARCH.  */
 108
 109 void
 110 register_ppc_ravenscar_ops (struct gdbarch *gdbarch)
 111 {
 112   set_gdbarch_ravenscar_ops (gdbarch, &ppc_ravenscar_powerpc_ops);
 113 }
 114
 115 /* The ravenscar_arch_ops vector for E500 targets.  */
 116
 117 static struct ravenscar_arch_ops ppc_ravenscar_e500_ops (e500_context_offsets);
 118
 119 /* Register ppc_ravenscar_e500_ops in GDBARCH.  */
 120
 121 void
 122 register_e500_ravenscar_ops (struct gdbarch *gdbarch)
 123 {
 124   set_gdbarch_ravenscar_ops (gdbarch, &ppc_ravenscar_e500_ops);
 125 }