1 /* Machine independent variables that describe the core file under GDB. 2 3 Copyright (C) 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 4 1997, 1998, 1999, 2000, 2001, 2004, 2007, 2008, 2009, 2010, 2011 5 Free Software Foundation, Inc. 6 7 This file is part of GDB. 8 9 This program is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 3 of the License, or 12 (at your option) any later version. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 21 22 /* Interface routines for core, executable, etc. */ 23 24 #if !defined (GDBCORE_H) 25 #define GDBCORE_H 1 26 27 struct type; 28 struct regcache; 29 30 #include "bfd.h" 31 #include "exec.h" 32 33 /* Return the name of the executable file as a string. 34 ERR nonzero means get error if there is none specified; 35 otherwise return 0 in that case. */ 36 37 extern char *get_exec_file (int err); 38 39 /* Nonzero if there is a core file. */ 40 41 extern int have_core_file_p (void); 42 43 /* Report a memory error with error(). */ 44 45 extern void memory_error (int status, CORE_ADDR memaddr); 46 47 /* Like target_read_memory, but report an error if can't read. */ 48 49 extern void read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len); 50 51 /* Like target_read_stack, but report an error if can't read. */ 52 53 extern void read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, int len); 54 55 /* Read an integer from debugged memory, given address and number of 56 bytes. */ 57 58 extern LONGEST read_memory_integer (CORE_ADDR memaddr, 59 int len, enum bfd_endian byte_order); 60 extern int safe_read_memory_integer (CORE_ADDR memaddr, int len, 61 enum bfd_endian byte_order, 62 LONGEST *return_value); 63 64 /* Read an unsigned integer from debugged memory, given address and 65 number of bytes. */ 66 67 extern ULONGEST read_memory_unsigned_integer (CORE_ADDR memaddr, 68 int len, 69 enum bfd_endian byte_order); 70 71 /* Read a null-terminated string from the debuggee's memory, given 72 address, a buffer into which to place the string, and the maximum 73 available space. */ 74 75 extern void read_memory_string (CORE_ADDR, char *, int); 76 77 /* Read the pointer of type TYPE at ADDR, and return the address it 78 represents. */ 79 80 CORE_ADDR read_memory_typed_address (CORE_ADDR addr, struct type *type); 81 82 /* This takes a char *, not void *. This is probably right, because 83 passing in an int * or whatever is wrong with respect to 84 byteswapping, alignment, different sizes for host vs. target types, 85 etc. */ 86 87 extern void write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len); 88 89 /* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */ 90 extern void write_memory_unsigned_integer (CORE_ADDR addr, int len, 91 enum bfd_endian byte_order, 92 ULONGEST value); 93 94 /* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */ 95 extern void write_memory_signed_integer (CORE_ADDR addr, int len, 96 enum bfd_endian byte_order, 97 LONGEST value); 98 99 /* Hook for `exec_file_command' command to call. */ 100 101 extern void (*deprecated_exec_file_display_hook) (char *filename); 102 103 /* Hook for "file_command", which is more useful than above 104 (because it is invoked AFTER symbols are read, not before). */ 105 106 extern void (*deprecated_file_changed_hook) (char *filename); 107 108 extern void specify_exec_file_hook (void (*hook) (char *filename)); 109 110 /* Binary File Diddler for the core file. */ 111 112 extern bfd *core_bfd; 113 114 extern struct target_ops *core_target; 115 116 /* Whether to open exec and core files read-only or read-write. */ 117 118 extern int write_files; 119 120 extern void core_file_command (char *filename, int from_tty); 121 122 extern void exec_file_attach (char *filename, int from_tty); 123 124 extern void exec_file_clear (int from_tty); 125 126 extern void validate_files (void); 127 128 /* The current default bfd target. */ 129 130 extern char *gnutarget; 131 132 extern void set_gnutarget (char *); 133 134 /* Structure to keep track of core register reading functions for 135 various core file types. */ 136 137 struct core_fns 138 { 139 140 /* BFD flavour that a core file handler is prepared to read. This 141 can be used by the handler's core tasting function as a first 142 level filter to reject BFD's that don't have the right 143 flavour. */ 144 145 enum bfd_flavour core_flavour; 146 147 /* Core file handler function to call to recognize corefile 148 formats that BFD rejects. Some core file format just don't fit 149 into the BFD model, or may require other resources to identify 150 them, that simply aren't available to BFD (such as symbols from 151 another file). Returns nonzero if the handler recognizes the 152 format, zero otherwise. */ 153 154 int (*check_format) (bfd *); 155 156 /* Core file handler function to call to ask if it can handle a 157 given core file format or not. Returns zero if it can't, 158 nonzero otherwise. */ 159 160 int (*core_sniffer) (struct core_fns *, bfd *); 161 162 /* Extract the register values out of the core file and supply them 163 into REGCACHE. 164 165 CORE_REG_SECT points to the register values themselves, read into 166 memory. 167 168 CORE_REG_SIZE is the size of that area. 169 170 WHICH says which set of registers we are handling: 171 0 --- integer registers 172 2 --- floating-point registers, on machines where they are 173 discontiguous 174 3 --- extended floating-point registers, on machines where 175 these are present in yet a third area. (GNU/Linux uses 176 this to get at the SSE registers.) 177 178 REG_ADDR is the offset from u.u_ar0 to the register values relative to 179 core_reg_sect. This is used with old-fashioned core files to locate the 180 registers in a large upage-plus-stack ".reg" section. Original upage 181 address X is at location core_reg_sect+x+reg_addr. */ 182 183 void (*core_read_registers) (struct regcache *regcache, 184 char *core_reg_sect, 185 unsigned core_reg_size, 186 int which, CORE_ADDR reg_addr); 187 188 /* Finds the next struct core_fns. They are allocated and 189 initialized in whatever module implements the functions pointed 190 to; an initializer calls deprecated_add_core_fns to add them to 191 the global chain. */ 192 193 struct core_fns *next; 194 195 }; 196 197 /* NOTE: cagney/2004-04-05: Replaced by "regset.h" and 198 regset_from_core_section(). */ 199 extern void deprecated_add_core_fns (struct core_fns *cf); 200 extern int default_core_sniffer (struct core_fns *cf, bfd * abfd); 201 extern int default_check_format (bfd * abfd); 202 203 struct target_section *deprecated_core_resize_section_table (int num_added); 204 205 #endif /* !defined (GDBCORE_H) */ 206