gdb/arch/arm-get-next-pcs.h

   1 /* Common code for ARM software single stepping support.
   2
   3    Copyright (C) 1988-2017 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 #ifndef ARM_GET_NEXT_PCS_H
  21 #define ARM_GET_NEXT_PCS_H 1
  22 #include "gdb_vecs.h"
  23
  24 /* Forward declaration.  */
  25 struct arm_get_next_pcs;
  26
  27 /* get_next_pcs operations.  */
  28 struct arm_get_next_pcs_ops
  29 {
  30   ULONGEST (*read_mem_uint) (CORE_ADDR memaddr, int len, int byte_order);
  31   CORE_ADDR (*syscall_next_pc) (struct arm_get_next_pcs *self);
  32   CORE_ADDR (*addr_bits_remove) (struct arm_get_next_pcs *self, CORE_ADDR val);
  33   int (*is_thumb) (struct arm_get_next_pcs *self);
  34
  35   /* Fix up PC if needed.  */
  36   CORE_ADDR (*fixup) (struct arm_get_next_pcs *self, CORE_ADDR pc);
  37 };
  38
  39 /* Context for a get_next_pcs call on ARM.  */
  40 struct arm_get_next_pcs
  41 {
  42   /* Operations implementations.  */
  43   struct arm_get_next_pcs_ops *ops;
  44   /* Byte order for data.  */
  45   int byte_order;
  46   /* Byte order for code.  */
  47   int byte_order_for_code;
  48   /* Whether the target has 32-bit thumb-2 breakpoint defined or
  49      not.  */
  50   int has_thumb2_breakpoint;
  51   /* Registry cache.  */
  52   struct regcache *regcache;
  53 };
  54
  55 /* Initialize arm_get_next_pcs.  */
  56 void arm_get_next_pcs_ctor (struct arm_get_next_pcs *self,
  57                             struct arm_get_next_pcs_ops *ops,
  58                             int byte_order,
  59                             int byte_order_for_code,
  60                             int has_thumb2_breakpoint,
  61                             struct regcache *regcache);
  62
  63 /* Find the next possible PCs after the current instruction executes.  */
  64 VEC (CORE_ADDR) *arm_get_next_pcs (struct arm_get_next_pcs *self);
  65
  66 #endif /* ARM_GET_NEXT_PCS_H */