/* Machine independent variables that describe the core file under GDB.
- Copyright 1986, 1987, 1989, 1990, 1992, 1995 Free Software Foundation, Inc.
+
+ Copyright (C) 1986-2020 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Interface routines for core, executable, etc. */
#if !defined (GDBCORE_H)
#define GDBCORE_H 1
-#include "bfd.h"
-
-/* Return the name of the executable file as a string.
- ERR nonzero means get error if there is none specified;
- otherwise return 0 in that case. */
+struct type;
+struct regcache;
-extern char *get_exec_file PARAMS ((int err));
+#include "bfd.h"
+#include "exec.h"
+#include "target.h"
/* Nonzero if there is a core file. */
-extern int have_core_file_p PARAMS ((void));
+extern int have_core_file_p (void);
-/* Read "memory data" from whatever target or inferior we have.
- Returns zero if successful, errno value if not. EIO is used for
- address out of bounds. If breakpoints are inserted, returns shadow
- contents, not the breakpoints themselves. From breakpoint.c. */
+/* Report a memory error with error(). */
-extern int read_memory_nobpt PARAMS ((CORE_ADDR memaddr, char *myaddr,
- unsigned len));
+extern void memory_error (enum target_xfer_status status, CORE_ADDR memaddr);
-/* Report a memory error with error(). */
+/* The string 'memory_error' would use as exception message. */
-extern void memory_error PARAMS ((int status, CORE_ADDR memaddr));
+extern std::string memory_error_message (enum target_xfer_status err,
+ struct gdbarch *gdbarch,
+ CORE_ADDR memaddr);
/* Like target_read_memory, but report an error if can't read. */
-extern void read_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, int len));
+extern void read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len);
+
+/* Like target_read_stack, but report an error if can't read. */
-extern void read_memory_section PARAMS ((CORE_ADDR memaddr, char *myaddr,
- int len, asection * bfd_section));
+extern void read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len);
+
+/* Like target_read_code, but report an error if can't read. */
+
+extern void read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len);
/* Read an integer from debugged memory, given address and number of
bytes. */
-extern LONGEST read_memory_integer PARAMS ((CORE_ADDR memaddr, int len));
+extern LONGEST read_memory_integer (CORE_ADDR memaddr,
+ int len, enum bfd_endian byte_order);
+extern int safe_read_memory_integer (CORE_ADDR memaddr, int len,
+ enum bfd_endian byte_order,
+ LONGEST *return_value);
/* Read an unsigned integer from debugged memory, given address and
number of bytes. */
-extern ULONGEST read_memory_unsigned_integer PARAMS ((CORE_ADDR memaddr, int len));
+extern ULONGEST read_memory_unsigned_integer (CORE_ADDR memaddr,
+ int len,
+ enum bfd_endian byte_order);
+extern int safe_read_memory_unsigned_integer (CORE_ADDR memaddr, int len,
+ enum bfd_endian byte_order,
+ ULONGEST *return_value);
+
+/* Read an integer from debugged code memory, given address,
+ number of bytes, and byte order for code. */
+
+extern LONGEST read_code_integer (CORE_ADDR memaddr, int len,
+ enum bfd_endian byte_order);
+
+/* Read an unsigned integer from debugged code memory, given address,
+ number of bytes, and byte order for code. */
+
+extern ULONGEST read_code_unsigned_integer (CORE_ADDR memaddr,
+ int len,
+ enum bfd_endian byte_order);
-/* Read a null-terminated string from the debuggee's memory, given address,
- * a buffer into which to place the string, and the maximum available space */
-extern void read_memory_string PARAMS ((CORE_ADDR, char *, int));
+/* Read a null-terminated string from the debuggee's memory, given
+ address, a buffer into which to place the string, and the maximum
+ available space. */
-/* This takes a char *, not void *. This is probably right, because
- passing in an int * or whatever is wrong with respect to
- byteswapping, alignment, different sizes for host vs. target types,
- etc. */
+extern void read_memory_string (CORE_ADDR, char *, int);
-extern void write_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, int len));
+/* Read the pointer of type TYPE at ADDR, and return the address it
+ represents. */
-extern void generic_search PARAMS ((int len, char *data, char *mask,
- CORE_ADDR startaddr, int increment,
- CORE_ADDR lorange, CORE_ADDR hirange,
- CORE_ADDR * addr_found, char *data_found));
+CORE_ADDR read_memory_typed_address (CORE_ADDR addr, struct type *type);
+
+/* Same as target_write_memory, but report an error if can't
+ write. */
+
+extern void write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr,
+ ssize_t len);
+
+/* Same as write_memory, but notify 'memory_changed' observers. */
+
+extern void write_memory_with_notification (CORE_ADDR memaddr,
+ const bfd_byte *myaddr,
+ ssize_t len);
+
+/* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */
+extern void write_memory_unsigned_integer (CORE_ADDR addr, int len,
+ enum bfd_endian byte_order,
+ ULONGEST value);
+
+/* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */
+extern void write_memory_signed_integer (CORE_ADDR addr, int len,
+ enum bfd_endian byte_order,
+ LONGEST value);
\f
/* Hook for `exec_file_command' command to call. */
-extern void (*exec_file_display_hook) PARAMS ((char *filename));
+extern void (*deprecated_exec_file_display_hook) (const char *filename);
/* Hook for "file_command", which is more useful than above
- (because it is invoked AFTER symbols are read, not before) */
+ (because it is invoked AFTER symbols are read, not before). */
-extern void (*file_changed_hook) PARAMS ((char *filename));
+extern void (*deprecated_file_changed_hook) (const char *filename);
-extern void specify_exec_file_hook PARAMS ((void (*hook) (char *filename)));
+extern void specify_exec_file_hook (void (*hook) (const char *filename));
-/* Binary File Diddlers for the exec and core files */
+/* Binary File Diddler for the core file. */
-extern bfd *core_bfd;
-extern bfd *exec_bfd;
+#define core_bfd (current_program_space->cbfd.get ())
/* Whether to open exec and core files read-only or read-write. */
-extern int write_files;
-
-extern void core_file_command PARAMS ((char *filename, int from_tty));
+extern bool write_files;
-extern void exec_file_attach PARAMS ((char *filename, int from_tty));
+/* Open and set up the core file bfd. */
-extern void exec_file_command PARAMS ((char *filename, int from_tty));
+extern void core_target_open (const char *arg, int from_tty);
-extern void validate_files PARAMS ((void));
+extern void core_file_command (const char *filename, int from_tty);
-extern CORE_ADDR register_addr PARAMS ((int regno, CORE_ADDR blockend));
+extern void exec_file_attach (const char *filename, int from_tty);
-extern void registers_fetched PARAMS ((void));
+/* If the filename of the main executable is unknown, attempt to
+ determine it. If a filename is determined, proceed as though
+ it was just specified with the "file" command. Do nothing if
+ the filename of the main executable is already known.
+ DEFER_BP_RESET uses SYMFILE_DEFER_BP_RESET for the main symbol file. */
-#if !defined (KERNEL_U_ADDR)
-extern CORE_ADDR kernel_u_addr;
-#define KERNEL_U_ADDR kernel_u_addr
-#endif
+extern void exec_file_locate_attach (int pid, int defer_bp_reset, int from_tty);
-/* The target vector for core files. */
-
-extern struct target_ops core_ops;
+extern void validate_files (void);
/* The current default bfd target. */
extern char *gnutarget;
-extern void set_gnutarget PARAMS ((char *));
+extern void set_gnutarget (const char *);
/* Structure to keep track of core register reading functions for
various core file types. */
struct core_fns
{
- /* BFD flavour that we handle. Note that bfd_target_unknown_flavour matches
- anything, and if there is no better match, this function will be called
- as the default. */
+ /* BFD flavour that a core file handler is prepared to read. This
+ can be used by the handler's core tasting function as a first
+ level filter to reject BFD's that don't have the right
+ flavour. */
enum bfd_flavour core_flavour;
- /* Extract the register values out of the core file and store them where
- `read_register' will find them.
+ /* Core file handler function to call to recognize corefile
+ formats that BFD rejects. Some core file format just don't fit
+ into the BFD model, or may require other resources to identify
+ them, that simply aren't available to BFD (such as symbols from
+ another file). Returns nonzero if the handler recognizes the
+ format, zero otherwise. */
+
+ int (*check_format) (bfd *);
+
+ /* Core file handler function to call to ask if it can handle a
+ given core file format or not. Returns zero if it can't,
+ nonzero otherwise. */
+
+ int (*core_sniffer) (struct core_fns *, bfd *);
+
+ /* Extract the register values out of the core file and supply them
+ into REGCACHE.
CORE_REG_SECT points to the register values themselves, read into
memory.
CORE_REG_SIZE is the size of that area.
- WHICH says which set of registers we are handling (0 = int, 2 = float on
- machines where they are discontiguous).
+ WHICH says which set of registers we are handling:
+ 0 --- integer registers
+ 2 --- floating-point registers, on machines where they are
+ discontiguous
+ 3 --- extended floating-point registers, on machines where
+ these are present in yet a third area. (GNU/Linux uses
+ this to get at the SSE registers.)
REG_ADDR is the offset from u.u_ar0 to the register values relative to
core_reg_sect. This is used with old-fashioned core files to locate the
registers in a large upage-plus-stack ".reg" section. Original upage
- address X is at location core_reg_sect+x+reg_addr. */
+ address X is at location core_reg_sect+x+reg_addr. */
- void (*core_read_registers) PARAMS ((char *core_reg_sect, unsigned core_reg_size,
- int which, CORE_ADDR reg_addr));
+ void (*core_read_registers) (struct regcache *regcache,
+ char *core_reg_sect,
+ unsigned core_reg_size,
+ int which, CORE_ADDR reg_addr);
- /* Finds the next struct core_fns. They are allocated and initialized
- in whatever module implements the functions pointed to; an
- initializer calls add_core_fns to add them to the global chain. */
+ /* Finds the next struct core_fns. They are allocated and
+ initialized in whatever module implements the functions pointed
+ to; an initializer calls deprecated_add_core_fns to add them to
+ the global chain. */
struct core_fns *next;
};
-extern void add_core_fns PARAMS ((struct core_fns * cf));
+/* Build either a single-thread or multi-threaded section name for
+ PTID.
+
+ If ptid's lwp member is zero, we want to do the single-threaded
+ thing: look for a section named NAME (as passed to the
+ constructor). If ptid's lwp member is non-zero, we'll want do the
+ multi-threaded thing: look for a section named "NAME/LWP", where
+ LWP is the shortest ASCII decimal representation of ptid's lwp
+ member. */
+
+class thread_section_name
+{
+public:
+ /* NAME is the single-threaded section name. If PTID represents an
+ LWP, then the build section name is "NAME/LWP", otherwise it's
+ just "NAME" unmodified. */
+ thread_section_name (const char *name, ptid_t ptid)
+ {
+ if (ptid.lwp_p ())
+ {
+ m_storage = string_printf ("%s/%ld", name, ptid.lwp ());
+ m_section_name = m_storage.c_str ();
+ }
+ else
+ m_section_name = name;
+ }
+
+ /* Return the computed section name. The result is valid as long as
+ this thread_section_name object is live. */
+ const char *c_str () const
+ { return m_section_name; }
+
+ DISABLE_COPY_AND_ASSIGN (thread_section_name);
+
+private:
+ /* Either a pointer into M_STORAGE, or a pointer to the name passed
+ as parameter to the constructor. */
+ const char *m_section_name;
+ /* If we need to build a new section name, this is where we store
+ it. */
+ std::string m_storage;
+};
+
+/* NOTE: cagney/2004-04-05: Replaced by "regset.h" and
+ regset_from_core_section(). */
+extern void deprecated_add_core_fns (struct core_fns *cf);
+extern int default_core_sniffer (struct core_fns *cf, bfd * abfd);
+extern int default_check_format (bfd * abfd);
#endif /* !defined (GDBCORE_H) */
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