1 /* Machine independent variables that describe the core file under GDB. 2 3 Copyright (C) 1986-2013 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 /* Interface routines for core, executable, etc. */ 21 22 #if !defined (GDBCORE_H) 23 #define GDBCORE_H 1 24 25 struct type; 26 struct regcache; 27 28 #include "bfd.h" 29 #include "exec.h" 30 31 /* Return the name of the executable file as a string. 32 ERR nonzero means get error if there is none specified; 33 otherwise return 0 in that case. */ 34 35 extern char *get_exec_file (int err); 36 37 /* Nonzero if there is a core file. */ 38 39 extern int have_core_file_p (void); 40 41 /* Report a memory error with error(). */ 42 43 extern void memory_error (int status, CORE_ADDR memaddr); 44 45 /* Like target_read_memory, but report an error if can't read. */ 46 47 extern void read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len); 48 49 /* Like target_read_stack, but report an error if can't read. */ 50 51 extern void read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t 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, 57 int len, enum bfd_endian byte_order); 58 extern int safe_read_memory_integer (CORE_ADDR memaddr, int len, 59 enum bfd_endian byte_order, 60 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, 67 enum bfd_endian byte_order); 68 69 /* Read a null-terminated string from the debuggee's memory, given 70 address, a buffer into which to place the string, and the maximum 71 available space. */ 72 73 extern void read_memory_string (CORE_ADDR, char *, int); 74 75 /* Read the pointer of type TYPE at ADDR, and return the address it 76 represents. */ 77 78 CORE_ADDR read_memory_typed_address (CORE_ADDR addr, struct type *type); 79 80 /* This takes a char *, not void *. This is probably right, because 81 passing in an int * or whatever is wrong with respect to 82 byteswapping, alignment, different sizes for host vs. target types, 83 etc. */ 84 85 extern void write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, 86 ssize_t len); 87 88 /* Same as write_memory, but notify 'memory_changed' observers. */ 89 90 extern void write_memory_with_notification (CORE_ADDR memaddr, 91 const bfd_byte *myaddr, 92 ssize_t len); 93 94 /* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */ 95 extern void write_memory_unsigned_integer (CORE_ADDR addr, int len, 96 enum bfd_endian byte_order, 97 ULONGEST value); 98 99 /* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */ 100 extern void write_memory_signed_integer (CORE_ADDR addr, int len, 101 enum bfd_endian byte_order, 102 LONGEST value); 103 104 /* Hook for `exec_file_command' command to call. */ 105 106 extern void (*deprecated_exec_file_display_hook) (char *filename); 107 108 /* Hook for "file_command", which is more useful than above 109 (because it is invoked AFTER symbols are read, not before). */ 110 111 extern void (*deprecated_file_changed_hook) (char *filename); 112 113 extern void specify_exec_file_hook (void (*hook) (char *filename)); 114 115 /* Binary File Diddler for the core file. */ 116 117 extern bfd *core_bfd; 118 119 extern struct target_ops *core_target; 120 121 /* Whether to open exec and core files read-only or read-write. */ 122 123 extern int write_files; 124 125 extern void core_file_command (char *filename, int from_tty); 126 127 extern void exec_file_attach (char *filename, int from_tty); 128 129 extern void exec_file_clear (int from_tty); 130 131 extern void validate_files (void); 132 133 /* The current default bfd target. */ 134 135 extern char *gnutarget; 136 137 extern void set_gnutarget (char *); 138 139 /* Structure to keep track of core register reading functions for 140 various core file types. */ 141 142 struct core_fns 143 { 144 145 /* BFD flavour that a core file handler is prepared to read. This 146 can be used by the handler's core tasting function as a first 147 level filter to reject BFD's that don't have the right 148 flavour. */ 149 150 enum bfd_flavour core_flavour; 151 152 /* Core file handler function to call to recognize corefile 153 formats that BFD rejects. Some core file format just don't fit 154 into the BFD model, or may require other resources to identify 155 them, that simply aren't available to BFD (such as symbols from 156 another file). Returns nonzero if the handler recognizes the 157 format, zero otherwise. */ 158 159 int (*check_format) (bfd *); 160 161 /* Core file handler function to call to ask if it can handle a 162 given core file format or not. Returns zero if it can't, 163 nonzero otherwise. */ 164 165 int (*core_sniffer) (struct core_fns *, bfd *); 166 167 /* Extract the register values out of the core file and supply them 168 into REGCACHE. 169 170 CORE_REG_SECT points to the register values themselves, read into 171 memory. 172 173 CORE_REG_SIZE is the size of that area. 174 175 WHICH says which set of registers we are handling: 176 0 --- integer registers 177 2 --- floating-point registers, on machines where they are 178 discontiguous 179 3 --- extended floating-point registers, on machines where 180 these are present in yet a third area. (GNU/Linux uses 181 this to get at the SSE registers.) 182 183 REG_ADDR is the offset from u.u_ar0 to the register values relative to 184 core_reg_sect. This is used with old-fashioned core files to locate the 185 registers in a large upage-plus-stack ".reg" section. Original upage 186 address X is at location core_reg_sect+x+reg_addr. */ 187 188 void (*core_read_registers) (struct regcache *regcache, 189 char *core_reg_sect, 190 unsigned core_reg_size, 191 int which, CORE_ADDR reg_addr); 192 193 /* Finds the next struct core_fns. They are allocated and 194 initialized in whatever module implements the functions pointed 195 to; an initializer calls deprecated_add_core_fns to add them to 196 the global chain. */ 197 198 struct core_fns *next; 199 200 }; 201 202 /* NOTE: cagney/2004-04-05: Replaced by "regset.h" and 203 regset_from_core_section(). */ 204 extern void deprecated_add_core_fns (struct core_fns *cf); 205 extern int default_core_sniffer (struct core_fns *cf, bfd * abfd); 206 extern int default_check_format (bfd * abfd); 207 208 struct target_section *deprecated_core_resize_section_table (int num_added); 209 210 #endif /* !defined (GDBCORE_H) */ 211