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 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 32 /* Return the name of the executable file as a string. 33 ERR nonzero means get error if there is none specified; 34 otherwise return 0 in that case. */ 35 36 extern char *get_exec_file (int err); 37 38 /* Nonzero if there is a core file. */ 39 40 extern int have_core_file_p (void); 41 42 /* Report a memory error with error(). */ 43 44 extern void memory_error (int status, CORE_ADDR memaddr); 45 46 /* Like target_read_memory, but report an error if can't read. */ 47 48 extern void read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len); 49 50 /* Like target_read_stack, but report an error if can't read. */ 51 52 extern void read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, int len); 53 54 /* Read an integer from debugged memory, given address and number of 55 bytes. */ 56 57 extern LONGEST read_memory_integer (CORE_ADDR memaddr, 58 int len, enum bfd_endian byte_order); 59 extern int safe_read_memory_integer (CORE_ADDR memaddr, int len, 60 enum bfd_endian byte_order, LONGEST *return_value); 61 62 /* Read an unsigned integer from debugged memory, given address and 63 number of bytes. */ 64 65 extern ULONGEST read_memory_unsigned_integer (CORE_ADDR memaddr, 66 int len, enum bfd_endian byte_order); 67 68 /* Read a null-terminated string from the debuggee's memory, given address, 69 * a buffer into which to place the string, and the maximum available space */ 70 71 extern void read_memory_string (CORE_ADDR, char *, int); 72 73 /* Read the pointer of type TYPE at ADDR, and return the address it 74 represents. */ 75 76 CORE_ADDR read_memory_typed_address (CORE_ADDR addr, struct type *type); 77 78 /* This takes a char *, not void *. This is probably right, because 79 passing in an int * or whatever is wrong with respect to 80 byteswapping, alignment, different sizes for host vs. target types, 81 etc. */ 82 83 extern void write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len); 84 85 /* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */ 86 extern void write_memory_unsigned_integer (CORE_ADDR addr, int len, 87 enum bfd_endian byte_order, 88 ULONGEST value); 89 90 /* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */ 91 extern void write_memory_signed_integer (CORE_ADDR addr, int len, 92 enum bfd_endian byte_order, 93 LONGEST value); 94 95 /* Hook for `exec_file_command' command to call. */ 96 97 extern void (*deprecated_exec_file_display_hook) (char *filename); 98 99 /* Hook for "file_command", which is more useful than above 100 (because it is invoked AFTER symbols are read, not before). */ 101 102 extern void (*deprecated_file_changed_hook) (char *filename); 103 104 extern void specify_exec_file_hook (void (*hook) (char *filename)); 105 106 /* Binary File Diddlers for the exec and core files. */ 107 108 extern bfd *core_bfd; 109 extern bfd *exec_bfd; 110 111 /* The mtime when we last opened exec_bfd. */ 112 extern long exec_bfd_mtime; 113 114 /* Whether to open exec and core files read-only or read-write. */ 115 116 extern int write_files; 117 118 extern void core_file_command (char *filename, int from_tty); 119 120 extern void exec_file_attach (char *filename, int from_tty); 121 122 extern void exec_file_clear (int from_tty); 123 124 extern void validate_files (void); 125 126 /* The current default bfd target. */ 127 128 extern char *gnutarget; 129 130 extern void set_gnutarget (char *); 131 132 /* Structure to keep track of core register reading functions for 133 various core file types. */ 134 135 struct core_fns 136 { 137 138 /* BFD flavour that a core file handler is prepared to read. This 139 can be used by the handler's core tasting function as a first 140 level filter to reject BFD's that don't have the right 141 flavour. */ 142 143 enum bfd_flavour core_flavour; 144 145 /* Core file handler function to call to recognize corefile 146 formats that BFD rejects. Some core file format just don't fit 147 into the BFD model, or may require other resources to identify 148 them, that simply aren't available to BFD (such as symbols from 149 another file). Returns nonzero if the handler recognizes the 150 format, zero otherwise. */ 151 152 int (*check_format) (bfd *); 153 154 /* Core file handler function to call to ask if it can handle a 155 given core file format or not. Returns zero if it can't, 156 nonzero otherwise. */ 157 158 int (*core_sniffer) (struct core_fns *, bfd *); 159 160 /* Extract the register values out of the core file and supply them 161 into REGCACHE. 162 163 CORE_REG_SECT points to the register values themselves, read into 164 memory. 165 166 CORE_REG_SIZE is the size of that area. 167 168 WHICH says which set of registers we are handling: 169 0 --- integer registers 170 2 --- floating-point registers, on machines where they are 171 discontiguous 172 3 --- extended floating-point registers, on machines where 173 these are present in yet a third area. (GNU/Linux uses 174 this to get at the SSE registers.) 175 176 REG_ADDR is the offset from u.u_ar0 to the register values relative to 177 core_reg_sect. This is used with old-fashioned core files to locate the 178 registers in a large upage-plus-stack ".reg" section. Original upage 179 address X is at location core_reg_sect+x+reg_addr. */ 180 181 void (*core_read_registers) (struct regcache *regcache, 182 char *core_reg_sect, 183 unsigned core_reg_size, 184 int which, CORE_ADDR reg_addr); 185 186 /* Finds the next struct core_fns. They are allocated and 187 initialized in whatever module implements the functions pointed 188 to; an initializer calls deprecated_add_core_fns to add them to 189 the global chain. */ 190 191 struct core_fns *next; 192 193 }; 194 195 /* NOTE: cagney/2004-04-05: Replaced by "regset.h" and 196 regset_from_core_section(). */ 197 extern void deprecated_add_core_fns (struct core_fns *cf); 198 extern int default_core_sniffer (struct core_fns *cf, bfd * abfd); 199 extern int default_check_format (bfd * abfd); 200 201 struct target_section *deprecated_core_resize_section_table (int num_added); 202 203 #endif /* !defined (GDBCORE_H) */ 204