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 (int err);
  33
  34 /* Nonzero if there is a core file.  */
  35
  36 extern int have_core_file_p (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 (CORE_ADDR memaddr, char *myaddr, unsigned len);
  44
  45 /* Report a memory error with error().  */
  46
  47 extern void memory_error (int status, CORE_ADDR memaddr);
  48
  49 /* Like target_read_memory, but report an error if can't read.  */
  50
  51 extern void read_memory (CORE_ADDR memaddr, char *myaddr, int len);
  52
  53 /* Read an integer from debugged memory, given address and number of
  54    bytes.  */
  55
  56 extern LONGEST read_memory_integer (CORE_ADDR memaddr, int len);
  57
  58 /* Read an unsigned integer from debugged memory, given address and
  59    number of bytes.  */
  60
  61 extern ULONGEST read_memory_unsigned_integer (CORE_ADDR memaddr, int len);
  62
  63 /* Read a null-terminated string from the debuggee's memory, given address,
  64  * a buffer into which to place the string, and the maximum available space */
  65 extern void read_memory_string (CORE_ADDR, char *, int);
  66
  67 /* This takes a char *, not void *.  This is probably right, because
  68    passing in an int * or whatever is wrong with respect to
  69    byteswapping, alignment, different sizes for host vs. target types,
  70    etc.  */
  71
  72 extern void write_memory (CORE_ADDR memaddr, char *myaddr, int len);
  73
  74 extern void generic_search (int len, char *data, char *mask,
  75                             CORE_ADDR startaddr, int increment,
  76                             CORE_ADDR lorange, CORE_ADDR hirange,
  77                             CORE_ADDR * addr_found, char *data_found);
  78 \f
  79 /* Hook for `exec_file_command' command to call.  */
  80
  81 extern void (*exec_file_display_hook) (char *filename);
  82
  83 /* Hook for "file_command", which is more useful than above
  84    (because it is invoked AFTER symbols are read, not before) */
  85
  86 extern void (*file_changed_hook) (char *filename);
  87
  88 extern void specify_exec_file_hook (void (*hook) (char *filename));
  89
  90 /* Binary File Diddlers for the exec and core files */
  91
  92 extern bfd *core_bfd;
  93 extern bfd *exec_bfd;
  94
  95 /* Whether to open exec and core files read-only or read-write.  */
  96
  97 extern int write_files;
  98
  99 extern void core_file_command (char *filename, int from_tty);
 100
 101 extern void exec_file_attach (char *filename, int from_tty);
 102
 103 extern void exec_file_command (char *filename, int from_tty);
 104
 105 extern void validate_files (void);
 106
 107 extern CORE_ADDR register_addr (int regno, CORE_ADDR blockend);
 108
 109 extern void registers_fetched (void);
 110
 111 #if !defined (KERNEL_U_ADDR)
 112 extern CORE_ADDR kernel_u_addr;
 113 #define KERNEL_U_ADDR kernel_u_addr
 114 #endif
 115
 116 /* The target vector for core files. */
 117
 118 extern struct target_ops core_ops;
 119
 120 /* The current default bfd target.  */
 121
 122 extern char *gnutarget;
 123
 124 extern void set_gnutarget (char *);
 125
 126 /* Structure to keep track of core register reading functions for
 127    various core file types.  */
 128
 129 struct core_fns
 130   {
 131
 132     /* BFD flavour that a core file handler is prepared to read.  This
 133        can be used by the handler's core tasting function as a first
 134        level filter to reject BFD's that don't have the right
 135        flavour. */
 136
 137     enum bfd_flavour core_flavour;
 138
 139     /* Core file handler function to call to recognize corefile
 140        formats that BFD rejects.  Some core file format just don't fit
 141        into the BFD model, or may require other resources to identify
 142        them, that simply aren't available to BFD (such as symbols from
 143        another file).  Returns nonzero if the handler recognizes the
 144        format, zero otherwise. */
 145
 146     int (*check_format) (bfd *);
 147
 148     /* Core file handler function to call to ask if it can handle a
 149        given core file format or not.  Returns zero if it can't,
 150        nonzero otherwise. */
 151
 152     int (*core_sniffer) (struct core_fns *, bfd *);
 153
 154     /* Extract the register values out of the core file and store them where
 155        `read_register' will find them.
 156
 157        CORE_REG_SECT points to the register values themselves, read into
 158        memory.
 159
 160        CORE_REG_SIZE is the size of that area.
 161
 162        WHICH says which set of registers we are handling:
 163          0 --- integer registers
 164          2 --- floating-point registers, on machines where they are
 165                discontiguous
 166          3 --- extended floating-point registers, on machines where
 167                these are present in yet a third area.  (GNU/Linux uses
 168                this to get at the SSE registers.)
 169
 170        REG_ADDR is the offset from u.u_ar0 to the register values relative to
 171        core_reg_sect.  This is used with old-fashioned core files to locate the
 172        registers in a large upage-plus-stack ".reg" section.  Original upage
 173        address X is at location core_reg_sect+x+reg_addr. */
 174
 175     void (*core_read_registers) (char *core_reg_sect,
 176                                  unsigned core_reg_size,
 177                                  int which, CORE_ADDR reg_addr);
 178
 179     /* Finds the next struct core_fns.  They are allocated and initialized
 180        in whatever module implements the functions pointed to; an
 181        initializer calls add_core_fns to add them to the global chain.  */
 182
 183     struct core_fns *next;
 184
 185   };
 186
 187 extern void add_core_fns (struct core_fns *cf);
 188 extern int default_core_sniffer (struct core_fns *cf, bfd * abfd);
 189 extern int default_check_format (bfd * abfd);
 190
 191 #endif /* !defined (GDBCORE_H) */