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 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, 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, enum bfd_endian byte_order); 68 69 /* Read a null-terminated string from the debuggee's memory, given address, 70 * a buffer into which to place the string, and the maximum available space */ 71 72 extern void read_memory_string (CORE_ADDR, char *, int); 73 74 /* Read the pointer of type TYPE at ADDR, and return the address it 75 represents. */ 76 77 CORE_ADDR read_memory_typed_address (CORE_ADDR addr, struct type *type); 78 79 /* This takes a char *, not void *. This is probably right, because 80 passing in an int * or whatever is wrong with respect to 81 byteswapping, alignment, different sizes for host vs. target types, 82 etc. */ 83 84 extern void write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len); 85 86 /* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */ 87 extern void write_memory_unsigned_integer (CORE_ADDR addr, int len, 88 enum bfd_endian byte_order, 89 ULONGEST value); 90 91 /* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */ 92 extern void write_memory_signed_integer (CORE_ADDR addr, int len, 93 enum bfd_endian byte_order, 94 LONGEST value); 95 96 /* Hook for `exec_file_command' command to call. */ 97 98 extern void (*deprecated_exec_file_display_hook) (char *filename); 99 100 /* Hook for "file_command", which is more useful than above 101 (because it is invoked AFTER symbols are read, not before). */ 102 103 extern void (*deprecated_file_changed_hook) (char *filename); 104 105 extern void specify_exec_file_hook (void (*hook) (char *filename)); 106 107 /* Binary File Diddler for the core file. */ 108 109 extern bfd *core_bfd; 110 111 /* Whether to open exec and core files read-only or read-write. */ 112 113 extern int write_files; 114 115 extern void core_file_command (char *filename, int from_tty); 116 117 extern void exec_file_attach (char *filename, int from_tty); 118 119 extern void exec_file_clear (int from_tty); 120 121 extern void validate_files (void); 122 123 /* The current default bfd target. */ 124 125 extern char *gnutarget; 126 127 extern void set_gnutarget (char *); 128 129 /* Structure to keep track of core register reading functions for 130 various core file types. */ 131 132 struct core_fns 133 { 134 135 /* BFD flavour that a core file handler is prepared to read. This 136 can be used by the handler's core tasting function as a first 137 level filter to reject BFD's that don't have the right 138 flavour. */ 139 140 enum bfd_flavour core_flavour; 141 142 /* Core file handler function to call to recognize corefile 143 formats that BFD rejects. Some core file format just don't fit 144 into the BFD model, or may require other resources to identify 145 them, that simply aren't available to BFD (such as symbols from 146 another file). Returns nonzero if the handler recognizes the 147 format, zero otherwise. */ 148 149 int (*check_format) (bfd *); 150 151 /* Core file handler function to call to ask if it can handle a 152 given core file format or not. Returns zero if it can't, 153 nonzero otherwise. */ 154 155 int (*core_sniffer) (struct core_fns *, bfd *); 156 157 /* Extract the register values out of the core file and supply them 158 into REGCACHE. 159 160 CORE_REG_SECT points to the register values themselves, read into 161 memory. 162 163 CORE_REG_SIZE is the size of that area. 164 165 WHICH says which set of registers we are handling: 166 0 --- integer registers 167 2 --- floating-point registers, on machines where they are 168 discontiguous 169 3 --- extended floating-point registers, on machines where 170 these are present in yet a third area. (GNU/Linux uses 171 this to get at the SSE registers.) 172 173 REG_ADDR is the offset from u.u_ar0 to the register values relative to 174 core_reg_sect. This is used with old-fashioned core files to locate the 175 registers in a large upage-plus-stack ".reg" section. Original upage 176 address X is at location core_reg_sect+x+reg_addr. */ 177 178 void (*core_read_registers) (struct regcache *regcache, 179 char *core_reg_sect, 180 unsigned core_reg_size, 181 int which, CORE_ADDR reg_addr); 182 183 /* Finds the next struct core_fns. They are allocated and 184 initialized in whatever module implements the functions pointed 185 to; an initializer calls deprecated_add_core_fns to add them to 186 the global chain. */ 187 188 struct core_fns *next; 189 190 }; 191 192 /* NOTE: cagney/2004-04-05: Replaced by "regset.h" and 193 regset_from_core_section(). */ 194 extern void deprecated_add_core_fns (struct core_fns *cf); 195 extern int default_core_sniffer (struct core_fns *cf, bfd * abfd); 196 extern int default_check_format (bfd * abfd); 197 198 struct target_section *deprecated_core_resize_section_table (int num_added); 199 200 #endif /* !defined (GDBCORE_H) */ 201