X-Git-Url: https://repo.jachan.dev/binutils.git/blobdiff_plain/38017ce81c4c5f3853b46c0d497e4bcefdbac593..c5e30d0156ffae49fd287b17d2bdc3f531ae934f:/gdb/corelow.c diff --git a/gdb/corelow.c b/gdb/corelow.c index 90ac0627aa..fa61bf3dc2 100644 --- a/gdb/corelow.c +++ b/gdb/corelow.c @@ -1,6 +1,7 @@ /* Core dump and executable file functions below target vector, for GDB. - Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, - 1998, 1999, 2000, 2001 + + Copyright (C) 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, + 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. This file is part of GDB. @@ -17,10 +18,11 @@ 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. */ + Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. */ #include "defs.h" +#include "arch-utils.h" #include "gdb_string.h" #include #include @@ -37,16 +39,22 @@ #include "gdbcore.h" #include "gdbthread.h" #include "regcache.h" +#include "regset.h" #include "symfile.h" -#include +#include "exec.h" +#include "readline/readline.h" +#include "gdb_assert.h" +#include "exceptions.h" +#include "solib.h" + -#ifndef O_BINARY -#define O_BINARY 0 +#ifndef O_LARGEFILE +#define O_LARGEFILE 0 #endif -/* List of all available core_fns. On gdb startup, each core file register - reader calls add_core_fns() to register information on each core format it - is prepared to read. */ +/* List of all available core_fns. On gdb startup, each core file + register reader calls deprecated_add_core_fns() to register + information on each core format it is prepared to read. */ static struct core_fns *core_file_fns = NULL; @@ -55,11 +63,12 @@ static struct core_fns *core_file_fns = NULL; static struct core_fns *core_vec = NULL; -static void core_files_info (struct target_ops *); +/* FIXME: kettenis/20031023: Eventually this variable should + disappear. */ -#ifdef SOLIB_ADD -static int solib_add_stub (PTR); -#endif +struct gdbarch *core_gdbarch = NULL; + +static void core_files_info (struct target_ops *); static struct core_fns *sniff_core_bfd (bfd *); @@ -75,9 +84,7 @@ static void core_close_cleanup (void *ignore); static void get_core_registers (int); -static void add_to_thread_list (bfd *, asection *, PTR); - -static int ignore (CORE_ADDR, char *); +static void add_to_thread_list (bfd *, asection *, void *); static int core_file_thread_alive (ptid_t tid); @@ -93,7 +100,7 @@ struct target_ops core_ops; handle. */ void -add_core_fns (struct core_fns *cf) +deprecated_add_core_fns (struct core_fns *cf) { cf->next = core_file_fns; core_file_fns = cf; @@ -124,6 +131,10 @@ sniff_core_bfd (bfd *abfd) struct core_fns *yummy = NULL; int matches = 0;; + /* Don't sniff if we have support for register sets in CORE_GDBARCH. */ + if (core_gdbarch && gdbarch_regset_from_core_section_p (core_gdbarch)) + return NULL; + for (cf = core_file_fns; cf != NULL; cf = cf->next) { if (cf->core_sniffer (cf, abfd)) @@ -134,12 +145,12 @@ sniff_core_bfd (bfd *abfd) } if (matches > 1) { - warning ("\"%s\": ambiguous core format, %d handlers match", + warning (_("\"%s\": ambiguous core format, %d handlers match"), bfd_get_filename (abfd), matches); } else if (matches == 0) { - warning ("\"%s\": no core file handler recognizes format, using default", + warning (_("\"%s\": no core file handler recognizes format, using default"), bfd_get_filename (abfd)); } if (yummy == NULL) @@ -179,7 +190,6 @@ gdb_check_format (bfd *abfd) /* Discard all vestiges of any previous core file and mark data and stack spaces as empty. */ -/* ARGSUSED */ static void core_close (int quitting) { @@ -193,11 +203,13 @@ core_close (int quitting) comments in clear_solib in solib.c. */ #ifdef CLEAR_SOLIB CLEAR_SOLIB (); +#else + clear_solib (); #endif name = bfd_get_filename (core_bfd); if (!bfd_close (core_bfd)) - warning ("cannot close \"%s\": %s", + warning (_("cannot close \"%s\": %s"), name, bfd_errmsg (bfd_get_error ())); xfree (name); core_bfd = NULL; @@ -209,6 +221,7 @@ core_close (int quitting) } } core_vec = NULL; + core_gdbarch = NULL; } static void @@ -217,24 +230,11 @@ core_close_cleanup (void *ignore) core_close (0/*ignored*/); } -#ifdef SOLIB_ADD -/* Stub function for catch_errors around shared library hacking. FROM_TTYP - is really an int * which points to from_tty. */ - -static int -solib_add_stub (PTR from_ttyp) -{ - SOLIB_ADD (NULL, *(int *) from_ttyp, ¤t_target, auto_solib_add); - re_enable_breakpoints_in_shlibs (); - return 0; -} -#endif /* SOLIB_ADD */ - /* Look for sections whose names start with `.reg/' so that we can extract the list of threads in a core file. */ static void -add_to_thread_list (bfd *abfd, asection *asect, PTR reg_sect_arg) +add_to_thread_list (bfd *abfd, asection *asect, void *reg_sect_arg) { int thread_id; asection *reg_sect = (asection *) reg_sect_arg; @@ -265,30 +265,39 @@ core_open (char *filename, int from_tty) bfd *temp_bfd; int ontop; int scratch_chan; + int flags; target_preopen (from_tty); if (!filename) { - error (core_bfd ? - "No core file specified. (Use `detach' to stop debugging a core file.)" - : "No core file specified."); + if (core_bfd) + error (_("No core file specified. (Use `detach' to stop debugging a core file.)")); + else + error (_("No core file specified.")); } filename = tilde_expand (filename); if (filename[0] != '/') { - temp = concat (current_directory, "/", filename, NULL); + temp = concat (current_directory, "/", filename, (char *)NULL); xfree (filename); filename = temp; } old_chain = make_cleanup (xfree, filename); - scratch_chan = open (filename, O_BINARY | ( write_files ? O_RDWR : O_RDONLY ), 0); + flags = O_BINARY | O_LARGEFILE; + if (write_files) + flags |= O_RDWR; + else + flags |= O_RDONLY; + scratch_chan = open (filename, flags, 0); if (scratch_chan < 0) perror_with_name (filename); - temp_bfd = bfd_fdopenr (filename, gnutarget, scratch_chan); + temp_bfd = bfd_fopen (filename, gnutarget, + write_files ? FOPEN_RUB : FOPEN_RB, + scratch_chan); if (temp_bfd == NULL) perror_with_name (filename); @@ -300,7 +309,7 @@ core_open (char *filename, int from_tty) on error it does not free all the storage associated with the bfd). */ make_cleanup_bfd_close (temp_bfd); - error ("\"%s\" is not a core dump: %s", + error (_("\"%s\" is not a core dump: %s"), filename, bfd_errmsg (bfd_get_error ())); } @@ -311,6 +320,14 @@ core_open (char *filename, int from_tty) core_bfd = temp_bfd; old_chain = make_cleanup (core_close_cleanup, 0 /*ignore*/); + /* FIXME: kettenis/20031023: This is very dangerous. The + CORE_GDBARCH that results from this call may very well be + different from CURRENT_GDBARCH. However, its methods may only + work if it is selected as the current architecture, because they + rely on swapped data (see gdbarch.c). We should get rid of that + swapped data. */ + core_gdbarch = gdbarch_from_bfd (core_bfd); + /* Find a suitable core file handler to munch on core_bfd */ core_vec = sniff_core_bfd (core_bfd); @@ -319,7 +336,7 @@ core_open (char *filename, int from_tty) /* Find the data section */ if (build_section_table (core_bfd, &core_ops.to_sections, &core_ops.to_sections_end)) - error ("\"%s\": Can't find sections: %s", + error (_("\"%s\": Can't find sections: %s"), bfd_get_filename (core_bfd), bfd_errmsg (bfd_get_error ())); /* If we have no exec file, try to set the architecture from the @@ -332,9 +349,13 @@ core_open (char *filename, int from_tty) ontop = !push_target (&core_ops); discard_cleanups (old_chain); + /* This is done first, before anything has a chance to query the + inferior for information such as symbols. */ + post_create_inferior (&core_ops, from_tty); + p = bfd_core_file_failing_command (core_bfd); if (p) - printf_filtered ("Core was generated by `%s'.\n", p); + printf_filtered (_("Core was generated by `%s'.\n"), p); siggy = bfd_core_file_failing_signal (core_bfd); if (siggy > 0) @@ -342,7 +363,7 @@ core_open (char *filename, int from_tty) into gdb's internal signal value. Unfortunately gdb's internal value is called ``target_signal'' and this function got the name ..._from_host(). */ - printf_filtered ("Program terminated with signal %d, %s.\n", siggy, + printf_filtered (_("Program terminated with signal %d, %s.\n"), siggy, target_signal_to_string (target_signal_from_host (siggy))); /* Build up thread list from BFD sections. */ @@ -356,17 +377,10 @@ core_open (char *filename, int from_tty) /* Fetch all registers from core file. */ target_fetch_registers (-1); - /* Add symbols and section mappings for any shared libraries. */ -#ifdef SOLIB_ADD - catch_errors (solib_add_stub, &from_tty, (char *) 0, - RETURN_MASK_ALL); -#endif - /* Now, set up the frame cache, and print the top of stack. */ flush_cached_frames (); select_frame (get_current_frame ()); - print_stack_frame (deprecated_selected_frame, - frame_relative_level (deprecated_selected_frame), 1); + print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); } else { @@ -380,11 +394,11 @@ static void core_detach (char *args, int from_tty) { if (args) - error ("Too many arguments"); + error (_("Too many arguments")); unpush_target (&core_ops); reinit_frame_cache (); if (from_tty) - printf_filtered ("No core file now.\n"); + printf_filtered (_("No core file now.\n")); } @@ -409,21 +423,22 @@ get_core_register_section (char *name, char *human_name, int required) { - char section_name[100]; - sec_ptr section; + static char *section_name = NULL; + struct bfd_section *section; bfd_size_type size; char *contents; + xfree (section_name); if (PIDGET (inferior_ptid)) - sprintf (section_name, "%s/%d", name, PIDGET (inferior_ptid)); + section_name = xstrprintf ("%s/%d", name, PIDGET (inferior_ptid)); else - strcpy (section_name, name); + section_name = xstrdup (name); section = bfd_get_section_by_name (core_bfd, section_name); if (! section) { if (required) - warning ("Couldn't find %s registers in core file.\n", human_name); + warning (_("Couldn't find %s registers in core file."), human_name); return; } @@ -432,12 +447,30 @@ get_core_register_section (char *name, if (! bfd_get_section_contents (core_bfd, section, contents, (file_ptr) 0, size)) { - warning ("Couldn't read %s registers from `%s' section in core file.\n", + warning (_("Couldn't read %s registers from `%s' section in core file."), human_name, name); return; } - core_vec->core_read_registers (contents, size, which, + if (core_gdbarch && gdbarch_regset_from_core_section_p (core_gdbarch)) + { + const struct regset *regset; + + regset = gdbarch_regset_from_core_section (core_gdbarch, name, size); + if (regset == NULL) + { + if (required) + warning (_("Couldn't recognize %s registers in core file."), + human_name); + return; + } + + regset->supply_regset (regset, current_regcache, -1, contents, size); + return; + } + + gdb_assert (core_vec); + core_vec->core_read_registers (contents, size, which, ((CORE_ADDR) bfd_section_vma (core_bfd, section))); } @@ -449,14 +482,13 @@ get_core_register_section (char *name, /* We just get all the registers, so we don't use regno. */ -/* ARGSUSED */ static void get_core_registers (int regno) { int status; - if (core_vec == NULL - || core_vec->core_read_registers == NULL) + if (!(core_gdbarch && gdbarch_regset_from_core_section_p (core_gdbarch)) + && (core_vec == NULL || core_vec->core_read_registers == NULL)) { fprintf_filtered (gdb_stderr, "Can't fetch registers from this type of core file\n"); @@ -475,12 +507,101 @@ core_files_info (struct target_ops *t) { print_section_info (t, core_bfd); } + +static LONGEST +core_xfer_partial (struct target_ops *ops, enum target_object object, + const char *annex, gdb_byte *readbuf, + const gdb_byte *writebuf, ULONGEST offset, LONGEST len) +{ + switch (object) + { + case TARGET_OBJECT_MEMORY: + if (readbuf) + return (*ops->deprecated_xfer_memory) (offset, readbuf, len, + 0/*write*/, NULL, ops); + if (writebuf) + return (*ops->deprecated_xfer_memory) (offset, readbuf, len, + 1/*write*/, NULL, ops); + return -1; + + case TARGET_OBJECT_AUXV: + if (readbuf) + { + /* When the aux vector is stored in core file, BFD + represents this with a fake section called ".auxv". */ + + struct bfd_section *section; + bfd_size_type size; + char *contents; + + section = bfd_get_section_by_name (core_bfd, ".auxv"); + if (section == NULL) + return -1; + + size = bfd_section_size (core_bfd, section); + if (offset >= size) + return 0; + size -= offset; + if (size > len) + size = len; + if (size > 0 + && !bfd_get_section_contents (core_bfd, section, readbuf, + (file_ptr) offset, size)) + { + warning (_("Couldn't read NT_AUXV note in core file.")); + return -1; + } + + return size; + } + return -1; + + case TARGET_OBJECT_WCOOKIE: + if (readbuf) + { + /* When the StackGhost cookie is stored in core file, BFD + represents this with a fake section called ".wcookie". */ + + struct bfd_section *section; + bfd_size_type size; + char *contents; + + section = bfd_get_section_by_name (core_bfd, ".wcookie"); + if (section == NULL) + return -1; + + size = bfd_section_size (core_bfd, section); + if (offset >= size) + return 0; + size -= offset; + if (size > len) + size = len; + if (size > 0 + && !bfd_get_section_contents (core_bfd, section, readbuf, + (file_ptr) offset, size)) + { + warning (_("Couldn't read StackGhost cookie in core file.")); + return -1; + } + + return size; + } + return -1; + + default: + if (ops->beneath != NULL) + return ops->beneath->to_xfer_partial (ops->beneath, object, annex, + readbuf, writebuf, offset, len); + return -1; + } +} + /* If mourn is being called in all the right places, this could be say `gdb internal error' (since generic_mourn calls breakpoint_init_inferior). */ static int -ignore (CORE_ADDR addr, char *contents) +ignore (struct bp_target_info *bp_tgt) { return 0; } @@ -510,11 +631,10 @@ init_core_ops (void) core_ops.to_open = core_open; core_ops.to_close = core_close; core_ops.to_attach = find_default_attach; - core_ops.to_require_attach = find_default_require_attach; core_ops.to_detach = core_detach; - core_ops.to_require_detach = find_default_require_detach; core_ops.to_fetch_registers = get_core_registers; - core_ops.to_xfer_memory = xfer_memory; + core_ops.to_xfer_partial = core_xfer_partial; + core_ops.deprecated_xfer_memory = xfer_memory; core_ops.to_files_info = core_files_info; core_ops.to_insert_breakpoint = ignore; core_ops.to_remove_breakpoint = ignore;