1 /* Machine independent variables that describe the core file under GDB. 2 3 Copyright (C) 1986-1987, 1989-2001, 2004, 2007-2012 Free Software 4 Foundation, Inc. 5 6 This file is part of GDB. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 20 21 /* Interface routines for core, executable, etc. */ 22 23 #if !defined (GDBCORE_H) 24 #define GDBCORE_H 1 25 26 struct type; 27 struct regcache; 28 29 #include "bfd.h" 30 #include "exec.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, 61 LONGEST *return_value); 62 63 /* Read an unsigned integer from debugged memory, given address and 64 number of bytes. */ 65 66 extern ULONGEST read_memory_unsigned_integer (CORE_ADDR memaddr, 67 int len, 68 enum bfd_endian byte_order); 69 70 /* Read a null-terminated string from the debuggee's memory, given 71 address, a buffer into which to place the string, and the maximum 72 available space. */ 73 74 extern void read_memory_string (CORE_ADDR, char *, int); 75 76 /* Read the pointer of type TYPE at ADDR, and return the address it 77 represents. */ 78 79 CORE_ADDR read_memory_typed_address (CORE_ADDR addr, struct type *type); 80 81 /* This takes a char *, not void *. This is probably right, because 82 passing in an int * or whatever is wrong with respect to 83 byteswapping, alignment, different sizes for host vs. target types, 84 etc. */ 85 86 extern void write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len); 87 88 /* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */ 89 extern void write_memory_unsigned_integer (CORE_ADDR addr, int len, 90 enum bfd_endian byte_order, 91 ULONGEST value); 92 93 /* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */ 94 extern void write_memory_signed_integer (CORE_ADDR addr, int len, 95 enum bfd_endian byte_order, 96 LONGEST value); 97 98 /* Hook for `exec_file_command' command to call. */ 99 100 extern void (*deprecated_exec_file_display_hook) (char *filename); 101 102 /* Hook for "file_command", which is more useful than above 103 (because it is invoked AFTER symbols are read, not before). */ 104 105 extern void (*deprecated_file_changed_hook) (char *filename); 106 107 extern void specify_exec_file_hook (void (*hook) (char *filename)); 108 109 /* Binary File Diddler for the core file. */ 110 111 extern bfd *core_bfd; 112 113 extern struct target_ops *core_target; 114 115 /* Whether to open exec and core files read-only or read-write. */ 116 117 extern int write_files; 118 119 extern void core_file_command (char *filename, int from_tty); 120 121 extern void exec_file_attach (char *filename, int from_tty); 122 123 extern void exec_file_clear (int from_tty); 124 125 extern void validate_files (void); 126 127 /* The current default bfd target. */ 128 129 extern char *gnutarget; 130 131 extern void set_gnutarget (char *); 132 133 /* Structure to keep track of core register reading functions for 134 various core file types. */ 135 136 struct core_fns 137 { 138 139 /* BFD flavour that a core file handler is prepared to read. This 140 can be used by the handler's core tasting function as a first 141 level filter to reject BFD's that don't have the right 142 flavour. */ 143 144 enum bfd_flavour core_flavour; 145 146 /* Core file handler function to call to recognize corefile 147 formats that BFD rejects. Some core file format just don't fit 148 into the BFD model, or may require other resources to identify 149 them, that simply aren't available to BFD (such as symbols from 150 another file). Returns nonzero if the handler recognizes the 151 format, zero otherwise. */ 152 153 int (*check_format) (bfd *); 154 155 /* Core file handler function to call to ask if it can handle a 156 given core file format or not. Returns zero if it can't, 157 nonzero otherwise. */ 158 159 int (*core_sniffer) (struct core_fns *, bfd *); 160 161 /* Extract the register values out of the core file and supply them 162 into REGCACHE. 163 164 CORE_REG_SECT points to the register values themselves, read into 165 memory. 166 167 CORE_REG_SIZE is the size of that area. 168 169 WHICH says which set of registers we are handling: 170 0 --- integer registers 171 2 --- floating-point registers, on machines where they are 172 discontiguous 173 3 --- extended floating-point registers, on machines where 174 these are present in yet a third area. (GNU/Linux uses 175 this to get at the SSE registers.) 176 177 REG_ADDR is the offset from u.u_ar0 to the register values relative to 178 core_reg_sect. This is used with old-fashioned core files to locate the 179 registers in a large upage-plus-stack ".reg" section. Original upage 180 address X is at location core_reg_sect+x+reg_addr. */ 181 182 void (*core_read_registers) (struct regcache *regcache, 183 char *core_reg_sect, 184 unsigned core_reg_size, 185 int which, CORE_ADDR reg_addr); 186 187 /* Finds the next struct core_fns. They are allocated and 188 initialized in whatever module implements the functions pointed 189 to; an initializer calls deprecated_add_core_fns to add them to 190 the global chain. */ 191 192 struct core_fns *next; 193 194 }; 195 196 /* NOTE: cagney/2004-04-05: Replaced by "regset.h" and 197 regset_from_core_section(). */ 198 extern void deprecated_add_core_fns (struct core_fns *cf); 199 extern int default_core_sniffer (struct core_fns *cf, bfd * abfd); 200 extern int default_check_format (bfd * abfd); 201 202 struct target_section *deprecated_core_resize_section_table (int num_added); 203 204 #endif /* !defined (GDBCORE_H) */ 205