X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fcorefile.c;h=6de0772584ca623463c7087ba18654b65b9eb6e1;hb=e17a4113357102b55cfa5b80557d590a46a43300;hp=facd2dae83bfcaff7b96393cc88fdf22c03300e1;hpb=16a0f3e75ec06dd9d4ff578c2ae5273c364f165c;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/corefile.c b/gdb/corefile.c index facd2dae83..6de0772584 100644 --- a/gdb/corefile.c +++ b/gdb/corefile.c @@ -1,13 +1,14 @@ /* Core dump and executable file functions above target vector, for GDB. - Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1996, 1997, 1998, - 1999, 2000, 2001 + + Copyright (C) 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1996, 1997, 1998, + 1999, 2000, 2001, 2003, 2006, 2007, 2008, 2009 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, @@ -16,9 +17,7 @@ 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 . */ #include "defs.h" #include "gdb_string.h" @@ -35,23 +34,25 @@ #include "dis-asm.h" #include "gdb_stat.h" #include "completer.h" +#include "exceptions.h" /* Local function declarations. */ extern void _initialize_core (void); static void call_extra_exec_file_hooks (char *filename); -/* You can have any number of hooks for `exec_file_command' command to call. - If there's only one hook, it is set in exec_file_display hook. - If there are two or more hooks, they are set in exec_file_extra_hooks[], - and exec_file_display_hook is set to a function that calls all of them. - This extra complexity is needed to preserve compatibility with - old code that assumed that only one hook could be set, and which called - exec_file_display_hook directly. */ +/* You can have any number of hooks for `exec_file_command' command to + call. If there's only one hook, it is set in exec_file_display + hook. If there are two or more hooks, they are set in + exec_file_extra_hooks[], and deprecated_exec_file_display_hook is + set to a function that calls all of them. This extra complexity is + needed to preserve compatibility with old code that assumed that + only one hook could be set, and which called + deprecated_exec_file_display_hook directly. */ typedef void (*hook_type) (char *); -hook_type exec_file_display_hook; /* the original hook */ +hook_type deprecated_exec_file_display_hook; /* the original hook */ static hook_type *exec_file_extra_hooks; /* array of additional hooks */ static int exec_file_hook_count = 0; /* size of array */ @@ -71,17 +72,18 @@ core_file_command (char *filename, int from_tty) t = find_core_target (); if (t == NULL) - error ("GDB can't read core files on this machine."); + error (_("GDB can't read core files on this machine.")); if (!filename) - (t->to_detach) (filename, from_tty); + (t->to_detach) (t, filename, from_tty); else (t->to_open) (filename, from_tty); } -/* If there are two or more functions that wish to hook into exec_file_command, - * this function will call all of the hook functions. */ +/* If there are two or more functions that wish to hook into + exec_file_command, this function will call all of the hook + functions. */ static void call_extra_exec_file_hooks (char *filename) @@ -100,16 +102,16 @@ specify_exec_file_hook (void (*hook) (char *)) { hook_type *new_array; - if (exec_file_display_hook != NULL) + if (deprecated_exec_file_display_hook != NULL) { /* There's already a hook installed. Arrange to have both it * and the subsequent hooks called. */ if (exec_file_hook_count == 0) { - /* If this is the first extra hook, initialize the hook array. */ + /* If this is the first extra hook, initialize the hook array. */ exec_file_extra_hooks = (hook_type *) xmalloc (sizeof (hook_type)); - exec_file_extra_hooks[0] = exec_file_display_hook; - exec_file_display_hook = call_extra_exec_file_hooks; + exec_file_extra_hooks[0] = deprecated_exec_file_display_hook; + deprecated_exec_file_display_hook = call_extra_exec_file_hooks; exec_file_hook_count = 1; } @@ -124,7 +126,7 @@ specify_exec_file_hook (void (*hook) (char *)) exec_file_extra_hooks[exec_file_hook_count - 1] = hook; } else - exec_file_display_hook = hook; + deprecated_exec_file_display_hook = hook; } /* The exec file must be closed before running an inferior. @@ -151,21 +153,26 @@ reopen_exec_file (void) int res; struct stat st; long mtime; + struct cleanup *cleanups; - /* Don't do anything if the current target isn't exec. */ - if (exec_bfd == NULL || strcmp (target_shortname, "exec") != 0) + /* Don't do anything if there isn't an exec file. */ + if (exec_bfd == NULL) return; /* If the timestamp of the exec file has changed, reopen it. */ filename = xstrdup (bfd_get_filename (exec_bfd)); - make_cleanup (xfree, filename); - mtime = bfd_get_mtime (exec_bfd); + cleanups = make_cleanup (xfree, filename); res = stat (filename, &st); - if (mtime && mtime != st.st_mtime) - { - exec_open (filename, 0); - } + if (exec_bfd_mtime && exec_bfd_mtime != st.st_mtime) + exec_file_attach (filename, 0); + else + /* If we accessed the file since last opening it, close it now; + this stops GDB from holding the executable open after it + exits. */ + bfd_cache_close_all (); + + do_cleanups (cleanups); #endif } @@ -178,9 +185,9 @@ validate_files (void) if (exec_bfd && core_bfd) { if (!core_file_matches_executable_p (core_bfd, exec_bfd)) - warning ("core file may not match specified executable file."); + warning (_("core file may not match specified executable file.")); else if (bfd_get_mtime (exec_bfd) > bfd_get_mtime (core_bfd)) - warning ("exec file is newer than core file."); + warning (_("exec file is newer than core file.")); } } @@ -196,41 +203,33 @@ get_exec_file (int err) if (!err) return NULL; - error ("No executable file specified.\n\ -Use the \"file\" or \"exec-file\" command."); + error (_("No executable file specified.\n\ +Use the \"file\" or \"exec-file\" command.")); return NULL; } -/* Report a memory error with error(). */ +/* Report a memory error by throwing a MEMORY_ERROR error. */ void memory_error (int status, CORE_ADDR memaddr) { - struct ui_file *tmp_stream = mem_fileopen (); - make_cleanup_ui_file_delete (tmp_stream); - if (status == EIO) - { - /* Actually, address between memaddr and memaddr + len - was out of bounds. */ - fprintf_unfiltered (tmp_stream, "Cannot access memory at address "); - print_address_numeric (memaddr, 1, tmp_stream); - } + /* Actually, address between memaddr and memaddr + len was out of + bounds. */ + throw_error (MEMORY_ERROR, + _("Cannot access memory at address %s"), + paddress (target_gdbarch, memaddr)); else - { - fprintf_filtered (tmp_stream, "Error accessing memory address "); - print_address_numeric (memaddr, 1, tmp_stream); - fprintf_filtered (tmp_stream, ": %s.", - safe_strerror (status)); - } - - error_stream (tmp_stream); + throw_error (MEMORY_ERROR, + _("Error accessing memory address %s: %s."), + paddress (target_gdbarch, memaddr), + safe_strerror (status)); } /* Same as target_read_memory, but report an error if can't read. */ void -read_memory (CORE_ADDR memaddr, char *myaddr, int len) +read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len) { int status; status = target_read_memory (memaddr, myaddr, len); @@ -238,88 +237,84 @@ read_memory (CORE_ADDR memaddr, char *myaddr, int len) memory_error (status, memaddr); } -/* Like target_read_memory, but slightly different parameters. */ -int -dis_asm_read_memory (bfd_vma memaddr, bfd_byte *myaddr, unsigned int len, - disassemble_info *info) -{ - return target_read_memory (memaddr, (char *) myaddr, len); -} - -/* Like memory_error with slightly different parameters. */ -void -dis_asm_memory_error (int status, bfd_vma memaddr, disassemble_info *info) -{ - memory_error (status, memaddr); -} - -/* Like print_address with slightly different parameters. */ -void -dis_asm_print_address (bfd_vma addr, struct disassemble_info *info) -{ - print_address (addr, info->stream); -} - -/* Read an integer from debugged memory, given address and number of bytes. */ +/* Argument / return result struct for use with + do_captured_read_memory_integer(). MEMADDR and LEN are filled in + by gdb_read_memory_integer(). RESULT is the contents that were + successfully read from MEMADDR of length LEN. */ struct captured_read_memory_integer_arguments { CORE_ADDR memaddr; int len; + enum bfd_endian byte_order; LONGEST result; }; +/* Helper function for gdb_read_memory_integer(). DATA must be a + pointer to a captured_read_memory_integer_arguments struct. + Return 1 if successful. Note that the catch_errors() interface + will return 0 if an error occurred while reading memory. This + choice of return code is so that we can distinguish between + success and failure. */ + static int do_captured_read_memory_integer (void *data) { struct captured_read_memory_integer_arguments *args = (struct captured_read_memory_integer_arguments*) data; CORE_ADDR memaddr = args->memaddr; int len = args->len; + enum bfd_endian byte_order = args->byte_order; - args->result = read_memory_integer (memaddr, len); + args->result = read_memory_integer (memaddr, len, byte_order); - return 0; + return 1; } +/* Read memory at MEMADDR of length LEN and put the contents in + RETURN_VALUE. Return 0 if MEMADDR couldn't be read and non-zero + if successful. */ + int -safe_read_memory_integer (CORE_ADDR memaddr, int len, LONGEST *return_value) +safe_read_memory_integer (CORE_ADDR memaddr, int len, enum bfd_endian byte_order, + LONGEST *return_value) { int status; struct captured_read_memory_integer_arguments args; args.memaddr = memaddr; args.len = len; + args.byte_order = byte_order; status = catch_errors (do_captured_read_memory_integer, &args, "", RETURN_MASK_ALL); - if (!status) + if (status) *return_value = args.result; return status; } LONGEST -read_memory_integer (CORE_ADDR memaddr, int len) +read_memory_integer (CORE_ADDR memaddr, int len, enum bfd_endian byte_order) { - char buf[sizeof (LONGEST)]; + gdb_byte buf[sizeof (LONGEST)]; read_memory (memaddr, buf, len); - return extract_signed_integer (buf, len); + return extract_signed_integer (buf, len, byte_order); } ULONGEST -read_memory_unsigned_integer (CORE_ADDR memaddr, int len) +read_memory_unsigned_integer (CORE_ADDR memaddr, int len, enum bfd_endian byte_order) { - char buf[sizeof (ULONGEST)]; + gdb_byte buf[sizeof (ULONGEST)]; read_memory (memaddr, buf, len); - return extract_unsigned_integer (buf, len); + return extract_unsigned_integer (buf, len, byte_order); } void read_memory_string (CORE_ADDR memaddr, char *buffer, int max_len) { - register char *cp; - register int i; + char *cp; + int i; int cnt; cp = buffer; @@ -342,12 +337,19 @@ read_memory_string (CORE_ADDR memaddr, char *buffer, int max_len) } } +CORE_ADDR +read_memory_typed_address (CORE_ADDR addr, struct type *type) +{ + gdb_byte *buf = alloca (TYPE_LENGTH (type)); + read_memory (addr, buf, TYPE_LENGTH (type)); + return extract_typed_address (buf, type); +} + /* Same as target_write_memory, but report an error if can't write. */ void -write_memory (CORE_ADDR memaddr, char *myaddr, int len) +write_memory (CORE_ADDR memaddr, const bfd_byte *myaddr, int len) { int status; - status = target_write_memory (memaddr, myaddr, len); if (status != 0) memory_error (status, memaddr); @@ -355,55 +357,23 @@ write_memory (CORE_ADDR memaddr, char *myaddr, int len) /* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */ void -write_memory_unsigned_integer (CORE_ADDR addr, int len, ULONGEST value) +write_memory_unsigned_integer (CORE_ADDR addr, int len, enum bfd_endian byte_order, + ULONGEST value) { - char *buf = alloca (len); - store_unsigned_integer (buf, len, value); + gdb_byte *buf = alloca (len); + store_unsigned_integer (buf, len, byte_order, value); write_memory (addr, buf, len); } /* Store VALUE at ADDR in the inferior as a LEN-byte signed integer. */ void -write_memory_signed_integer (CORE_ADDR addr, int len, LONGEST value) +write_memory_signed_integer (CORE_ADDR addr, int len, enum bfd_endian byte_order, + LONGEST value) { - char *buf = alloca (len); - store_signed_integer (buf, len, value); + gdb_byte *buf = alloca (len); + store_signed_integer (buf, len, byte_order, value); write_memory (addr, buf, len); } - - - -#if 0 -/* Enable after 4.12. It is not tested. */ - -/* Search code. Targets can just make this their search function, or - if the protocol has a less general search function, they can call this - in the cases it can't handle. */ -void -generic_search (int len, char *data, char *mask, CORE_ADDR startaddr, - int increment, CORE_ADDR lorange, CORE_ADDR hirange, - CORE_ADDR *addr_found, char *data_found) -{ - int i; - CORE_ADDR curaddr = startaddr; - - while (curaddr >= lorange && curaddr < hirange) - { - read_memory (curaddr, data_found, len); - for (i = 0; i < len; ++i) - if ((data_found[i] & mask[i]) != data[i]) - goto try_again; - /* It matches. */ - *addr_found = curaddr; - return; - - try_again: - curaddr += increment; - } - *addr_found = (CORE_ADDR) 0; - return; -} -#endif /* 0 */ /* The current default bfd target. Points to storage allocated for gnutarget_string. */ @@ -411,13 +381,19 @@ char *gnutarget; /* Same thing, except it is "auto" not NULL for the default case. */ static char *gnutarget_string; +static void +show_gnutarget_string (struct ui_file *file, int from_tty, + struct cmd_list_element *c, const char *value) +{ + fprintf_filtered (file, _("The current BFD target is \"%s\".\n"), value); +} static void set_gnutarget_command (char *, int, struct cmd_list_element *); static void set_gnutarget_command (char *ignore, int from_tty, struct cmd_list_element *c) { - if (STREQ (gnutarget_string, "auto")) + if (strcmp (gnutarget_string, "auto") == 0) gnutarget = NULL; else gnutarget = gnutarget_string; @@ -429,7 +405,7 @@ set_gnutarget (char *newtarget) { if (gnutarget_string != NULL) xfree (gnutarget_string); - gnutarget_string = savestring (newtarget, strlen (newtarget)); + gnutarget_string = xstrdup (newtarget); set_gnutarget_command (NULL, 0, NULL); } @@ -437,19 +413,21 @@ void _initialize_core (void) { struct cmd_list_element *c; - c = add_cmd ("core-file", class_files, core_file_command, - "Use FILE as core dump for examining memory and registers.\n\ + c = add_cmd ("core-file", class_files, core_file_command, _("\ +Use FILE as core dump for examining memory and registers.\n\ No arg means have no core file. This command has been superseded by the\n\ -`target core' and `detach' commands.", &cmdlist); - c->completer = filename_completer; - - c = add_set_cmd ("gnutarget", class_files, var_string_noescape, - (char *) &gnutarget_string, - "Set the current BFD target.\n\ -Use `set gnutarget auto' to specify automatic detection.", - &setlist); - c->function.sfunc = set_gnutarget_command; - add_show_from_set (c, &showlist); +`target core' and `detach' commands."), &cmdlist); + set_cmd_completer (c, filename_completer); + + + add_setshow_string_noescape_cmd ("gnutarget", class_files, + &gnutarget_string, _("\ +Set the current BFD target."), _("\ +Show the current BFD target."), _("\ +Use `set gnutarget auto' to specify automatic detection."), + set_gnutarget_command, + show_gnutarget_string, + &setlist, &showlist); if (getenv ("GNUTARGET")) set_gnutarget (getenv ("GNUTARGET"));