gdb/gdbcore.h

   1 /* Machine independent variables that describe the core file under GDB.
   2    Copyright 1986, 1987, 1989, 1990, 1992, 1995 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 /* Interface routines for core, executable, etc.  */
  22
  23 #if !defined (GDBCORE_H)
  24 #define GDBCORE_H 1
  25
  26 #include "bfd.h"
  27
  28 /* Return the name of the executable file as a string.
  29    ERR nonzero means get error if there is none specified;
  30    otherwise return 0 in that case.  */
  31
  32 extern char *get_exec_file PARAMS ((int err));
  33
  34 /* Nonzero if there is a core file.  */
  35
  36 extern int have_core_file_p PARAMS ((void));
  37
  38 /* Read "memory data" from whatever target or inferior we have.
  39    Returns zero if successful, errno value if not.  EIO is used for
  40    address out of bounds.  If breakpoints are inserted, returns shadow
  41    contents, not the breakpoints themselves.  From breakpoint.c.  */
  42
  43 extern int read_memory_nobpt PARAMS ((CORE_ADDR memaddr, char *myaddr,
  44                                       unsigned len));
  45
  46 /* Report a memory error with error().  */
  47
  48 extern void memory_error PARAMS ((int status, CORE_ADDR memaddr));
  49
  50 /* Like target_read_memory, but report an error if can't read.  */
  51
  52 extern void read_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, int len));
  53
  54 extern void read_memory_section PARAMS ((CORE_ADDR memaddr, char *myaddr,
  55                                          int len, asection * bfd_section));
  56
  57 /* Read an integer from debugged memory, given address and number of
  58    bytes.  */
  59
  60 extern LONGEST read_memory_integer PARAMS ((CORE_ADDR memaddr, int len));
  61
  62 /* Read an unsigned integer from debugged memory, given address and
  63    number of bytes.  */
  64
  65 extern ULONGEST read_memory_unsigned_integer PARAMS ((CORE_ADDR memaddr, int len));
  66
  67 /* Read a null-terminated string from the debuggee's memory, given address,
  68  * a buffer into which to place the string, and the maximum available space */
  69 extern void read_memory_string PARAMS ((CORE_ADDR, char *, int));
  70
  71 /* This takes a char *, not void *.  This is probably right, because
  72    passing in an int * or whatever is wrong with respect to
  73    byteswapping, alignment, different sizes for host vs. target types,
  74    etc.  */
  75
  76 extern void write_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, int len));
  77
  78 extern void generic_search PARAMS ((int len, char *data, char *mask,
  79                                     CORE_ADDR startaddr, int increment,
  80                                     CORE_ADDR lorange, CORE_ADDR hirange,
  81                                  CORE_ADDR * addr_found, char *data_found));
  82 \f
  83 /* Hook for `exec_file_command' command to call.  */
  84
  85 extern void (*exec_file_display_hook) PARAMS ((char *filename));
  86
  87 /* Hook for "file_command", which is more useful than above
  88    (because it is invoked AFTER symbols are read, not before) */
  89
  90 extern void (*file_changed_hook) PARAMS ((char *filename));
  91
  92 extern void specify_exec_file_hook PARAMS ((void (*hook) (char *filename)));
  93
  94 /* Binary File Diddlers for the exec and core files */
  95
  96 extern bfd *core_bfd;
  97 extern bfd *exec_bfd;
  98
  99 /* Whether to open exec and core files read-only or read-write.  */
 100
 101 extern int write_files;
 102
 103 extern void core_file_command PARAMS ((char *filename, int from_tty));
 104
 105 extern void exec_file_attach PARAMS ((char *filename, int from_tty));
 106
 107 extern void exec_file_command PARAMS ((char *filename, int from_tty));
 108
 109 extern void validate_files PARAMS ((void));
 110
 111 extern CORE_ADDR register_addr PARAMS ((int regno, CORE_ADDR blockend));
 112
 113 extern void registers_fetched PARAMS ((void));
 114
 115 #if !defined (KERNEL_U_ADDR)
 116 extern CORE_ADDR kernel_u_addr;
 117 #define KERNEL_U_ADDR kernel_u_addr
 118 #endif
 119
 120 /* The target vector for core files. */
 121
 122 extern struct target_ops core_ops;
 123
 124 /* The current default bfd target.  */
 125
 126 extern char *gnutarget;
 127
 128 extern void set_gnutarget PARAMS ((char *));
 129
 130 /* Structure to keep track of core register reading functions for
 131    various core file types.  */
 132
 133 struct core_fns
 134   {
 135
 136     /* BFD flavour that a core file handler is prepared to read.  This
 137        can be used by the handler's core tasting function as a first
 138        level filter to reject BFD's that don't have the right
 139        flavour. */
 140
 141     enum bfd_flavour core_flavour;
 142
 143     /* Core file handler function to call to recognize corefile
 144        formats that BFD rejects.  Some core file format just don't fit
 145        into the BFD model, or may require other resources to identify
 146        them, that simply aren't available to BFD (such as symbols from
 147        another file).  Returns nonzero if the handler recognizes the
 148        format, zero otherwise. */
 149
 150     int (*check_format) PARAMS ((bfd *));
 151
 152     /* Core file handler function to call to ask if it can handle a
 153        given core file format or not.  Returns zero if it can't,
 154        nonzero otherwise. */
 155
 156     int (*core_sniffer) PARAMS ((struct core_fns *, bfd *));
 157
 158     /* Extract the register values out of the core file and store them where
 159        `read_register' will find them.
 160
 161        CORE_REG_SECT points to the register values themselves, read into
 162        memory.
 163
 164        CORE_REG_SIZE is the size of that area.
 165
 166        WHICH says which set of registers we are handling (0 = int, 2 = float on
 167        machines where they are discontiguous).
 168
 169        REG_ADDR is the offset from u.u_ar0 to the register values relative to
 170        core_reg_sect.  This is used with old-fashioned core files to locate the
 171        registers in a large upage-plus-stack ".reg" section.  Original upage
 172        address X is at location core_reg_sect+x+reg_addr. */
 173
 174     void (*core_read_registers) PARAMS ((char *core_reg_sect, unsigned core_reg_size,
 175                                          int which, CORE_ADDR reg_addr));
 176
 177     /* Finds the next struct core_fns.  They are allocated and initialized
 178        in whatever module implements the functions pointed to; an
 179        initializer calls add_core_fns to add them to the global chain.  */
 180
 181     struct core_fns *next;
 182
 183   };
 184
 185 extern void add_core_fns PARAMS ((struct core_fns * cf));
 186 extern int default_core_sniffer PARAMS ((struct core_fns *cf, bfd *abfd));
 187 extern int default_check_format PARAMS ((bfd *abfd));
 188
 189 #endif /* !defined (GDBCORE_H) */