gdb/target/target.h

   1 /* Declarations for common target functions.
   2
   3    Copyright (C) 1986-2014 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 TARGET_COMMON_H
  21 #define TARGET_COMMON_H
  22
  23 #include "target/waitstatus.h"
  24 #include <stdint.h>
  25
  26 /* This header is a stopgap until more code is shared.  */
  27
  28 /* Read LEN bytes of target memory at address MEMADDR, placing the
  29    results in GDB's memory at MYADDR.  Return zero for success,
  30    nonzero if any error occurs.  This function must be provided by
  31    the client.  Implementations of this function may define and use
  32    their own error codes, but functions in the common, nat and target
  33    directories must treat the return code as opaque.  No guarantee is
  34    made about the contents of the data at MYADDR if any error
  35    occurs.  */
  36
  37 extern int target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr,
  38                                ssize_t len);
  39
  40 /* Read an unsigned 32-bit integer in the target's format from target
  41    memory at address MEMADDR, storing the result in GDB's format in
  42    GDB's memory at RESULT.  Return zero for success, nonzero if any
  43    error occurs.  This function must be provided by the client.
  44    Implementations of this function may define and use their own error
  45    codes, but functions in the common, nat and target directories must
  46    treat the return code as opaque.  No guarantee is made about the
  47    contents of the data at RESULT if any error occurs.  */
  48
  49 extern int target_read_uint32 (CORE_ADDR memaddr, uint32_t *result);
  50
  51 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
  52    Return zero for success, nonzero if any error occurs.  This
  53    function must be provided by the client.  Implementations of this
  54    function may define and use their own error codes, but functions
  55    in the common, nat and target directories must treat the return
  56    code as opaque.  No guarantee is made about the contents of the
  57    data at MEMADDR if any error occurs.  */
  58
  59 extern int target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr,
  60                                 ssize_t len);
  61
  62 /* Make target stop in a continuable fashion.  (For instance, under
  63    Unix, this should act like SIGSTOP).  This function must be
  64    provided by the client.  */
  65
  66 extern void target_stop_ptid (ptid_t ptid);
  67
  68 /* Restart a target that was previously stopped by target_stop_ptid.
  69    This function must be provided by the client.  */
  70
  71 extern void target_continue_ptid (ptid_t ptid);
  72
  73 #endif /* TARGET_COMMON_H */