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gdb-13.2.patch
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# When this file is updated in an existing source tree, it gets re-applied
# during the next build using "patch -N --fuzz=0", which ignores patches
# that have already been applied. However, if a gdb file has been modified
# multiple times, the subsequent patching may fail to recognize that a
# given patch has been previously applied, and will attempt to re-apply it.
# To prevent any unintended consequences, this file also acts as a
# shell script that can restore any gdb file to its original state prior
# to all subsequent patch applications.
tar xvzmf gdb-13.2.tar.gz \
gdb-13.2/gdb/symtab.c \
gdb-13.2/gdb/printcmd.c \
gdb-13.2/gdb/symfile.c \
gdb-13.2/gdb/Makefile.in \
gdb-13.2/gdb/dwarf2/read.c \
gdb-13.2/gdb/ada-lang.c
exit 0
--- gdb-13.2/gdb/ada-lang.c.orig
+++ gdb-13.2/gdb/ada-lang.c
@@ -1388,7 +1388,7 @@
i -= 1;
if (i > 1 && encoded[i] == '_' && encoded[i - 1] == '_')
len0 = i - 1;
- else if (encoded[i] == '$')
+ else if (i >= 0 && encoded[i] == '$')
len0 = i;
}
--- gdb-13.2/gdb/cli/cli-cmds.c.orig
+++ gdb-13.2/gdb/cli/cli-cmds.c
@@ -450,6 +450,11 @@
}
}
+#ifdef CRASH_MERGE
+static int crash_from_tty = 0;
+extern "C" void untrusted_file(FILE *, char *);
+#endif
+
int
is_complete_command (struct cmd_list_element *c)
{
@@ -682,9 +687,32 @@
close (fd);
errno = save_errno;
}
- else
+#ifdef CRASH_MERGE
+ /*
+ * sourced during session initialization.
+ */
+ if (crash_from_tty == -1)
+ {
+ struct stat statbuf;
+ FILE *stream = result;
+ int _fd = fileno (stream);
+ if (fstat (_fd, &statbuf) < 0)
+ {
+ perror_with_name (full_path.get());
+ fclose (stream);
+ return opened;
+ }
+ if (statbuf.st_uid != getuid () || (statbuf.st_mode & S_IWOTH))
+ {
+ untrusted_file(NULL, full_path.get());
+ fclose (stream);
+ return opened;
+ }
+ }
+#endif
opened.emplace (gdb_file_up (result), std::move (full_path));
+
return opened;
}
@@ -747,7 +775,11 @@
If the source command was invoked interactively, throw an
error. Otherwise (e.g. if it was invoked by a script),
just emit a warning, rather than cause an error. */
+#ifdef CRASH_MERGE
+ if (from_tty > 0)
+#else
if (from_tty)
+#endif
perror_with_name (file);
else
{
@@ -779,7 +811,14 @@
void
source_script (const char *file, int from_tty)
{
+#ifdef CRASH_MERGE
+ crash_from_tty = from_tty;
+#endif
source_script_with_search (file, from_tty, 0);
+#ifdef CRASH_MERGE
+ crash_from_tty = 0;
+#endif
+
}
static void
--- gdb-13.2/gdb/coffread.c.orig
+++ gdb-13.2/gdb/coffread.c
@@ -160,6 +160,7 @@
static file_ptr linetab_size;
static char *stringtab = NULL;
+static long stringtab_length = 0;
extern void stabsread_clear_cache (void);
@@ -1315,6 +1316,7 @@
/* This is in target format (probably not very useful, and not
currently used), not host format. */
memcpy (stringtab, lengthbuf, sizeof lengthbuf);
+ stringtab_length = length;
if (length == sizeof length) /* Empty table -- just the count. */
return 0;
@@ -1334,8 +1336,9 @@
if (symbol_entry->_n._n_n._n_zeroes == 0)
{
- /* FIXME: Probably should be detecting corrupt symbol files by
- seeing whether offset points to within the stringtab. */
+ if (symbol_entry->_n._n_n._n_offset > stringtab_length)
+ error (_("COFF Error: string table offset (%ld) outside string table (length %ld)"),
+ symbol_entry->_n._n_n._n_offset, stringtab_length);
result = stringtab + symbol_entry->_n._n_n._n_offset;
}
else
--- gdb-13.2/gdb/completer.c.orig
+++ gdb-13.2/gdb/completer.c
@@ -2846,6 +2846,8 @@
/* How many items of MAX length can we fit in the screen window? */
cols = gdb_complete_get_screenwidth (displayer);
+ rl_reset_screen_size();
+ rl_get_screen_size(NULL, &cols);
max += 2;
limit = cols / max;
if (limit != 1 && (limit * max == cols))
--- gdb-13.2/gdb/c-typeprint.c.orig
+++ gdb-13.2/gdb/c-typeprint.c
@@ -1199,6 +1199,9 @@
= podata->end_bitpos
- type->field (i).type ()->length () * TARGET_CHAR_BIT;
}
+ else if (strlen(type->field(i).name()) == 0)
+ /* crash: Print details for unnamed struct and union. */
+ newshow = show;
c_print_type_1 (type->field (i).type (),
type->field (i).name (),
--- gdb-13.2/gdb/defs.h.orig
+++ gdb-13.2/gdb/defs.h
@@ -650,4 +650,7 @@
#include "utils.h"
+#ifdef CRASH_MERGE
+extern "C" int gdb_main_entry(int, char **);
+#endif
#endif /* #ifndef DEFS_H */
--- gdb-13.2/gdb/dwarf2/read.c.orig
+++ gdb-13.2/gdb/dwarf2/read.c
@@ -2549,7 +2549,11 @@
indices. */
if (version < 4)
{
+#ifdef CRASH_MERGE
+ static int warning_printed = 1;
+#else
static int warning_printed = 0;
+#endif
if (!warning_printed)
{
warning (_("Skipping obsolete .gdb_index section in %s."),
@@ -2568,7 +2572,11 @@
"set use-deprecated-index-sections on". */
if (version < 6 && !deprecated_ok)
{
+#ifdef CRASH_MERGE
+ static int warning_printed = 1;
+#else
static int warning_printed = 0;
+#endif
if (!warning_printed)
{
warning (_("\
--- gdb-13.2/gdb/main.c.orig
+++ gdb-13.2/gdb/main.c
@@ -447,6 +447,14 @@
return;
}
+#ifdef CRASH_MERGE
+extern "C" void update_gdb_hooks(void);
+extern "C" void main_loop(void);
+extern "C" unsigned long crash_get_kaslr_offset(void);
+extern "C" int console(const char *, ...);
+void crash_target_init (void);
+#endif
+
/* Call command_loop. */
/* Prevent inlining this function for the benefit of GDB's selftests
@@ -1014,7 +1022,11 @@
}
}
+#ifdef CRASH_MERGE
+ save_original_signals_state (1);
+#else
save_original_signals_state (quiet);
+#endif
/* Try to set up an alternate signal stack for SIGSEGV handlers. */
gdb::alternate_signal_stack signal_stack;
@@ -1107,7 +1119,7 @@
if (print_version)
{
print_gdb_version (gdb_stdout, false);
- gdb_printf ("\n");
+ gdb_printf ("\n\n");
exit (0);
}
@@ -1144,6 +1156,10 @@
look at things by now. Initialize the default interpreter. */
set_top_level_interpreter (interpreter_p.c_str ());
+#ifdef CRASH_MERGE
+ update_gdb_hooks();
+#endif
+
/* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
GDB retain the old MI1 interpreter startup behavior. Output the
copyright message after the interpreter is installed when it is
@@ -1171,7 +1187,11 @@
if (!system_gdbinit.empty () && !inhibit_gdbinit)
{
for (const std::string &file : system_gdbinit)
+#ifdef CRASH_MERGE
+ ret = catch_command_errors (source_script, file.c_str (), -1);
+#else
ret = catch_command_errors (source_script, file.c_str (), 0);
+#endif
}
/* Read and execute $HOME/.gdbinit file, if it exists. This is done
@@ -1180,7 +1200,11 @@
debugging or what directory you are in. */
if (!home_gdbinit.empty () && !inhibit_gdbinit && !inhibit_home_gdbinit)
+#ifdef CRASH_MERGE
+ ret = catch_command_errors (source_script, home_gdbinit.c_str (), -1);
+#else
ret = catch_command_errors (source_script, home_gdbinit.c_str (), 0);
+#endif
/* Process '-ix' and '-iex' options early. */
execute_cmdargs (&cmdarg_vec, CMDARG_INIT_FILE, CMDARG_INIT_COMMAND, &ret);
@@ -1211,7 +1235,11 @@
!batch_flag);
if (ret != 0)
ret = catch_command_errors (symbol_file_add_main_adapter,
+#ifdef CRASH_MERGE
+ symarg, 0);
+#else
symarg, !batch_flag);
+#endif
}
else
{
@@ -1282,7 +1310,11 @@
{
auto_load_local_gdbinit_loaded = 1;
+#ifdef CRASH_MERGE
+ ret = catch_command_errors (source_script, local_gdbinit.c_str (), -1);
+#else
ret = catch_command_errors (source_script, local_gdbinit.c_str (), 0);
+#endif
}
}
}
@@ -1319,6 +1351,16 @@
captured_main_1 (context);
+#ifdef CRASH_MERGE
+ /* Relocate the vmlinux. */
+ objfile_rebase (current_program_space->symfile_object_file, crash_get_kaslr_offset());
+
+ crash_target_init();
+
+ /* Back to crash. */
+ main_loop();
+#endif
+
/* NOTE: cagney/1999-11-07: There is probably no reason for not
moving this loop and the code found in captured_command_loop()
into the command_loop() proper. The main thing holding back that
@@ -1333,6 +1375,9 @@
{
exception_print (gdb_stderr, ex);
}
+#ifdef CRASH_MERGE
+ console("<CAPTURED_MAIN WHILE LOOP>\n");
+#endif
}
/* No exit -- exit is through quit_command. */
}
@@ -1354,6 +1399,22 @@
return 1;
}
+#ifdef CRASH_MERGE
+/*
+ * NOTE: adapted from gdb.c, which is no longer built in; changed name of
+ * original main() to gdb_main_entry() for use as crash entry point
+ */
+int
+gdb_main_entry (int argc, char **argv)
+{
+ struct captured_main_args args;
+ memset (&args, 0, sizeof args);
+ args.argc = argc;
+ args.argv = argv;
+ args.interpreter_p = INTERP_CONSOLE;
+ return gdb_main (&args);
+}
+#endif
/* Don't use *_filtered for printing help. We don't want to prompt
for continue no matter how small the screen or how much we're going
--- gdb-13.2/gdb/Makefile.in.orig
+++ gdb-13.2/gdb/Makefile.in
@@ -602,7 +602,7 @@
# It is also possible that you will need to add -I/usr/include/sys if
# your system doesn't have fcntl.h in /usr/include (which is where it
# should be according to Posix).
-DEFS = @DEFS@
+DEFS = -DCRASH_MERGE @DEFS@
GDB_CFLAGS = -I. -I$(srcdir) -I$(srcdir)/config \
-DLOCALEDIR="\"$(localedir)\"" $(DEFS)
@@ -1182,6 +1182,7 @@
symmisc.c \
symtab.c \
target.c \
+ ../../crash_target.c \
target-connection.c \
target-dcache.c \
target-descriptions.c \
@@ -1850,7 +1851,7 @@
$(SUBDIR_TARGET_OBS) \
$(SUBDIR_GCC_COMPILE_OBS)
-SUBDIRS = doc @subdirs@ data-directory
+SUBDIRS = build_no_subdirs
CLEANDIRS = $(SUBDIRS)
# List of subdirectories in the build tree that must exist.
@@ -1891,8 +1892,8 @@
# Flags needed to compile Python code
PYTHON_CFLAGS = @PYTHON_CFLAGS@
-all: gdb$(EXEEXT) $(CONFIG_ALL) gdb-gdb.py gdb-gdb.gdb
- @$(MAKE) $(FLAGS_TO_PASS) DO=all "DODIRS=$(SUBDIRS)" subdir_do
+all: gdb$(EXEEXT) gdb-gdb.py gdb-gdb.gdb
+ @$(MAKE) -s $(FLAGS_TO_PASS) DO=all "DODIRS=`echo $(SUBDIRS) | sed 's/testsuite//'`" subdir_do
# Rule for compiling .c files in the top-level gdb directory.
# The order-only dependencies ensure that we create the build subdirectories.
@@ -2147,9 +2148,10 @@
# Removing the old gdb first works better if it is running, at least on SunOS.
gdb$(EXEEXT): gdb.o $(LIBGDB_OBS) $(CDEPS) $(TDEPLIBS)
$(SILENCE) rm -f gdb$(EXEEXT)
+ @$(MAKE) -C ../.. GDB_FLAGS=-DGDB_13_2 library
$(ECHO_CXXLD) $(CC_LD) $(INTERNAL_LDFLAGS) $(WIN32LDAPP) \
- -o gdb$(EXEEXT) gdb.o $(LIBGDB_OBS) \
- $(TDEPLIBS) $(TUI_LIBRARY) $(CLIBS) $(LOADLIBES)
+ -o $(shell /bin/cat mergeobj) $(LIBGDB_OBS) \
+ $(TDEPLIBS) $(TUI_LIBRARY) $(CLIBS) $(LOADLIBES) $(shell /bin/cat mergelibs)
ifneq ($(CODESIGN_CERT),)
$(ECHO_SIGN) $(CODESIGN) -s $(CODESIGN_CERT) gdb$(EXEEXT)
endif
@@ -2594,9 +2596,9 @@
# into place if the compile succeeds. We need this because gcc does
# not atomically write the dependency output file.
override COMPILE.post = -c -o $@ -MT $@ -MMD -MP \
- -MF $(@D)/$(DEPDIR)/$(basename $(@F)).Tpo
-override POSTCOMPILE = @mv $(@D)/$(DEPDIR)/$(basename $(@F)).Tpo \
- $(@D)/$(DEPDIR)/$(basename $(@F)).Po
+ -MF $(subst ../..,.,$(@D))/$(DEPDIR)/$(basename $(@F)).Tpo
+override POSTCOMPILE = @mv $(subst ../..,.,$(@D))/$(DEPDIR)/$(basename $(@F)).Tpo \
+ $(subst ../..,.,$(@D))/$(DEPDIR)/$(basename $(@F)).Po
else
override COMPILE.pre = source='$<' object='$@' libtool=no \
DEPDIR=$(DEPDIR) $(DEPMODE) $(depcomp) \
--- gdb-13.2/gdb/objfiles.h.orig
+++ gdb-13.2/gdb/objfiles.h
@@ -858,9 +858,9 @@
extern int objfile_has_symbols (struct objfile *objfile);
-extern int have_partial_symbols (void);
+extern "C" int have_partial_symbols (void);
-extern int have_full_symbols (void);
+extern "C" int have_full_symbols (void);
extern void objfile_set_sym_fns (struct objfile *objfile,
const struct sym_fns *sf);
--- gdb-13.2/gdb/printcmd.c.orig
+++ gdb-13.2/gdb/printcmd.c
@@ -547,6 +547,9 @@
form. However note that DO_DEMANGLE can be overridden by the specific
settings of the demangle and asm_demangle variables. Returns
non-zero if anything was printed; zero otherwise. */
+#ifdef CRASH_MERGE
+extern "C" int gdb_print_callback(unsigned long);
+#endif
int
print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr,
@@ -558,6 +561,12 @@
int offset = 0;
int line = 0;
+#ifdef CRASH_MERGE
+ if (!gdb_print_callback(addr)) {
+ return 0;
+ }
+#endif
+
if (build_address_symbolic (gdbarch, addr, do_demangle, false, &name,
&offset, &filename, &line, &unmapped))
return 0;
@@ -590,6 +599,10 @@
/* See valprint.h. */
+#ifdef CRASH_MERGE
+extern "C" char *gdb_lookup_module_symbol(unsigned long, unsigned long *);
+#endif
+
int
build_address_symbolic (struct gdbarch *gdbarch,
CORE_ADDR addr, /* IN */
@@ -696,7 +709,19 @@
}
}
if (symbol == NULL && msymbol.minsym == NULL)
+#ifdef CRASH_MERGE
+ {
+ char *name_ptr = gdb_lookup_module_symbol(addr, (unsigned long *)offset);
+ if (name_ptr) {
+ *name = name_ptr;
+ return 0;
+ } else {
return 1;
+ }
+ }
+#else
+ return 1;
+#endif
/* If the nearest symbol is too far away, don't print anything symbolic. */
@@ -1236,6 +1261,43 @@
*expp = exp;
}
+static void
+print_command_2 (const char *args, int voidprint)
+{
+ struct value *val;
+ value_print_options print_opts;
+
+ get_user_print_options (&print_opts);
+ /* Override global settings with explicit options, if any. */
+ auto group = make_value_print_options_def_group (&print_opts);
+ gdb::option::process_options
+ (&args, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group);
+
+ print_command_parse_format (&args, "print", &print_opts);
+
+ const char *exp = args;
+
+ if (exp != nullptr && *exp)
+ {
+ expression_up expr = parse_expression (exp);
+ val = evaluate_expression (expr.get ());
+ }
+ else
+ val = access_value_history (0);
+
+ gdb_printf ("%d %d %ld %ld %ld %ld\n",
+ check_typedef(value_type (val))->code(),
+ check_typedef(value_type (val))->is_unsigned (),
+ check_typedef(value_type(val))->length (),
+ value_offset (val), value_bitpos (val), value_bitsize(val));
+}
+
+static void
+printm_command (const char *exp, int from_tty)
+{
+ print_command_2 (exp, 1);
+}
+
/* See valprint.h. */
void
@@ -3358,6 +3420,12 @@
= add_com ("print", class_vars, print_command, print_help.c_str ());
set_cmd_completer_handle_brkchars (print_cmd, print_command_completer);
add_com_alias ("p", print_cmd, class_vars, 1);
+
+ c = add_com ("printm", class_vars, printm_command, _("\
+Similar to \"print\" command, but it used to print the type, size, offset,\n\
+bitpos and bitsize of the expression EXP."));
+ set_cmd_completer (c, expression_completer);
+
add_com_alias ("inspect", print_cmd, class_vars, 1);
add_setshow_uinteger_cmd ("max-symbolic-offset", no_class,
--- gdb-13.2/gdb/psymtab.c.orig
+++ gdb-13.2/gdb/psymtab.c
@@ -162,6 +162,9 @@
}
/* See psympriv.h. */
+#ifdef CRASH_MERGE
+ extern "C" int gdb_line_number_callback(unsigned long, unsigned long, unsigned long);
+#endif
struct partial_symtab *
psymbol_functions::find_pc_sect_psymtab (struct objfile *objfile,
@@ -176,7 +179,12 @@
best_pst = find_pc_sect_psymtab_closer (objfile, pc, section, pst,
msymbol);
+#ifdef CRASH_MERGE
+ if ((best_pst != NULL) &&
+ gdb_line_number_callback(pc, pst->text_low (objfile), pst->text_high (objfile)))
+#else
if (best_pst != NULL)
+#endif
return best_pst;
}
--- gdb-13.2/gdb/symfile.c.orig
+++ gdb-13.2/gdb/symfile.c
@@ -643,7 +643,26 @@
for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next)
/* We do not expect this to happen; just skip this step if the
relocatable file has a section with an assigned VMA. */
- if (bfd_section_vma (cur_sec) != 0)
+ if (bfd_section_vma (cur_sec) != 0
+ /*
+ * Kernel modules may have some non-zero VMAs, i.e., like the
+ * __ksymtab and __ksymtab_gpl sections in this example:
+ *
+ * Section Headers:
+ * [Nr] Name Type Address Offset
+ * Size EntSize Flags Link Info Align
+ * ...
+ * [ 8] __ksymtab PROGBITS 0000000000000060 0000ad90
+ * 0000000000000010 0000000000000000 A 0 0 16
+ * [ 9] .rela__ksymtab RELA 0000000000000000 0000ada0
+ * 0000000000000030 0000000000000018 43 8 8
+ * [10] __ksymtab_gpl PROGBITS 0000000000000070 0000add0
+ * 00000000000001a0 0000000000000000 A 0 0 16
+ * ...
+ *
+ * but they should be treated as if they are NULL.
+ */
+ && strncmp (bfd_section_name (cur_sec), "__k", 3) != 0)
break;
if (cur_sec == NULL)
@@ -1073,6 +1092,12 @@
if (mainline)
flags |= OBJF_MAINLINE;
objfile = objfile::make (abfd, name, flags, parent);
+#ifdef CRASH_MERGE
+ if (add_flags & SYMFILE_MAINLINE) {
+ extern struct objfile *gdb_kernel_objfile;
+ gdb_kernel_objfile = objfile;
+ }
+#endif
/* We either created a new mapped symbol table, mapped an existing
symbol table file which has not had initial symbol reading
@@ -1366,6 +1391,10 @@
#if ! defined (DEBUG_SUBDIRECTORY)
#define DEBUG_SUBDIRECTORY ".debug"
#endif
+#ifdef CRASH_MERGE
+extern "C" int check_specified_module_tree(const char *, const char *);
+extern "C" char *check_specified_kernel_debug_file();
+#endif
/* Find a separate debuginfo file for OBJFILE, using DIR as the directory
where the original file resides (may not be the same as
@@ -1402,6 +1431,15 @@
if (separate_debug_file_exists (debugfile, crc32, objfile))
return debugfile;
+#ifdef CRASH_MERGE
+{
+ if (check_specified_module_tree(objfile_name (objfile), debugfile.c_str()) &&
+ separate_debug_file_exists(debugfile, crc32, objfile)) {
+ return debugfile;
+ }
+}
+#endif
+
/* Then try in the global debugfile directories.
Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will
@@ -1561,6 +1599,14 @@
}
}
+#ifdef CRASH_MERGE
+ if (debugfile.empty ()) {
+ char *name_copy;
+ name_copy = check_specified_kernel_debug_file();
+ return name_copy ? std::string (name_copy) : std::string ();
+ }
+#endif
+
return debugfile;
}
@@ -2321,8 +2367,10 @@
else if (section_addrs.empty ())
gdb_printf ("\n");
+#ifndef CRASH_MERGE
if (from_tty && (!query ("%s", "")))
error (_("Not confirmed."));
+#endif
objf = symbol_file_add (filename.get (), add_flags, §ion_addrs,
flags);
@@ -3599,6 +3647,15 @@
symfile_relocate_debug_section (struct objfile *objfile,
asection *sectp, bfd_byte *buf)
{
+#ifdef CRASH_MERGE
+ /* Executable files have all the relocations already resolved.
+ * Handle files linked with --emit-relocs.
+ * http://sources.redhat.com/ml/gdb/2006-08/msg00137.html
+ */
+ bfd *abfd = objfile->obfd.get();
+ if ((abfd->flags & EXEC_P) != 0)
+ return NULL;
+#endif
gdb_assert (objfile->sf->sym_relocate);
return (*objfile->sf->sym_relocate) (objfile, sectp, buf);
--- gdb-13.2/gdb/symtab.c.orig
+++ gdb-13.2/gdb/symtab.c
@@ -1945,29 +1945,48 @@
variable and thus can probably assume it will never hit the C++
code). */
+#ifdef CRASH_MERGE
+static void gdb_bait_and_switch(char *, struct symbol *);
+#endif
+
struct block_symbol
lookup_symbol_in_language (const char *name, const struct block *block,
const domain_enum domain, enum language lang,
struct field_of_this_result *is_a_field_of_this)
{
SYMBOL_LOOKUP_SCOPED_DEBUG_ENTER_EXIT;
+ struct block_symbol result;
demangle_result_storage storage;
const char *modified_name = demangle_for_lookup (name, lang, storage);
- return lookup_symbol_aux (modified_name,
+ result = lookup_symbol_aux (modified_name,
symbol_name_match_type::FULL,
block, domain, lang,
is_a_field_of_this);
+#ifdef CRASH_MERGE
+ if (result.symbol && (domain == VAR_DOMAIN))
+ gdb_bait_and_switch((char *)modified_name, result.symbol);
+#endif
+ return result;
}
/* See symtab.h. */
+#ifdef CRASH_MERGE
+static const struct block *gdb_get_crash_block(void);
+#endif
+
struct block_symbol
lookup_symbol (const char *name, const struct block *block,
domain_enum domain,
struct field_of_this_result *is_a_field_of_this)
{
+#ifdef CRASH_MERGE
+ if (!block)
+ block = gdb_get_crash_block();
+#endif
+
return lookup_symbol_in_language (name, block, domain,
current_language->la_language,
is_a_field_of_this);
@@ -2938,7 +2957,7 @@
for (objfile *objf : current_program_space->objfiles ())
{
struct compunit_symtab *result
- = objf->find_pc_sect_compunit_symtab (msymbol, pc, section, 1);
+ = objf->find_pc_sect_compunit_symtab (msymbol, pc, section, 0);
if (result != NULL)
return result;
}
@@ -7037,3 +7056,898 @@
gdb::observers::new_objfile.attach (symtab_new_objfile_observer, "symtab");
gdb::observers::free_objfile.attach (symtab_free_objfile_observer, "symtab");
}
+
+#ifdef CRASH_MERGE
+#include "gdb-stabs.h"
+#include "gdbsupport/version.h"
+#define GDB_COMMON
+#include "../../defs.h"
+
+static void get_member_data(struct gnu_request *, struct type *, long, int);
+static void walk_enum(struct type *, struct gnu_request *);
+static void eval_enum(struct type *, struct gnu_request *);
+static void gdb_get_line_number(struct gnu_request *);
+static void gdb_get_datatype(struct gnu_request *);
+static void gdb_get_symbol_type(struct gnu_request *);
+static void gdb_command_exists(struct gnu_request *);
+static void gdb_debug_command(struct gnu_request *);
+static void gdb_function_numargs(struct gnu_request *);
+static void gdb_add_symbol_file(struct gnu_request *);
+static void gdb_delete_symbol_file(struct gnu_request *);
+static void gdb_patch_symbol_values(struct gnu_request *);
+static void get_user_print_option_address(struct gnu_request *);
+extern int get_frame_offset(CORE_ADDR);
+static void gdb_set_crash_block(struct gnu_request *);
+extern "C" void gdb_command_funnel(struct gnu_request *);
+void gdb_command_funnel_1(struct gnu_request *);
+static long lookup_struct_contents(struct gnu_request *);
+static void iterate_datatypes(struct gnu_request *);
+
+struct objfile *gdb_kernel_objfile = { 0 };
+
+static ulong gdb_merge_flags = 0;
+#define KERNEL_SYMBOLS_PATCHED (0x1)
+
+#undef STREQ
+#define STREQ(A, B) (A && B && (strcmp(A, B) == 0))
+#define TYPE_CODE(t) (t->code ())
+#define TYPE_TAG_NAME(t) (TYPE_MAIN_TYPE(t)->name)
+#define TYPE_NFIELDS(t) (t->num_fields ())
+#define TYPE_NAME(t) (t->name ())
+
+/*
+ * All commands from above come through here.
+ */
+void
+gdb_command_funnel(struct gnu_request *req)
+{
+ try {
+ gdb_command_funnel_1(req);
+ } catch (const gdb_exception &ex) {
+ if (req->flags & GNU_RETURN_ON_ERROR)
+ req->flags |= GNU_COMMAND_FAILED;
+ else
+ throw ex;
+ }
+}
+
+void
+gdb_command_funnel_1(struct gnu_request *req)
+{
+ struct symbol *sym;
+
+ if (req->command != GNU_VERSION && req->command != GNU_USER_PRINT_OPTION) {
+ (dynamic_cast<stdio_file *>gdb_stdout)->set_stream(req->fp);
+ (dynamic_cast<stdio_file *>gdb_stderr)->set_stream(req->fp);
+ }
+
+ switch (req->command)
+ {
+ case GNU_VERSION:
+ req->buf = (char *)version;
+ break;
+
+ case GNU_PASS_THROUGH:
+ execute_command(req->buf,
+ req->flags & GNU_FROM_TTY_OFF ? FALSE : TRUE);
+ break;
+
+ case GNU_USER_PRINT_OPTION:
+ get_user_print_option_address(req);
+ break;
+
+ case GNU_RESOLVE_TEXT_ADDR:
+ sym = find_pc_function(req->addr);
+ if (!sym || TYPE_CODE(sym->type()) != TYPE_CODE_FUNC)
+ req->flags |= GNU_COMMAND_FAILED;
+ break;
+
+ case GNU_DISASSEMBLE:
+ if (req->addr2)
+ sprintf(req->buf, "disassemble 0x%lx 0x%lx",
+ req->addr, req->addr2);
+ else
+ sprintf(req->buf, "disassemble 0x%lx", req->addr);
+ execute_command(req->buf, TRUE);
+ break;
+
+ case GNU_ADD_SYMBOL_FILE:
+ gdb_add_symbol_file(req);
+ break;
+
+ case GNU_DELETE_SYMBOL_FILE:
+ gdb_delete_symbol_file(req);
+ break;
+
+ case GNU_GET_LINE_NUMBER:
+ gdb_get_line_number(req);
+ break;
+
+ case GNU_GET_DATATYPE:
+ gdb_get_datatype(req);
+ break;
+
+ case GNU_GET_SYMBOL_TYPE:
+ gdb_get_symbol_type(req);
+ break;
+
+ case GNU_COMMAND_EXISTS:
+ gdb_command_exists(req);
+ break;
+
+ case GNU_ALPHA_FRAME_OFFSET:
+ req->value = 0;
+ break;
+
+ case GNU_FUNCTION_NUMARGS:
+ gdb_function_numargs(req);
+ break;
+
+ case GNU_DEBUG_COMMAND:
+ gdb_debug_command(req);
+ break;
+
+ case GNU_PATCH_SYMBOL_VALUES:
+ gdb_patch_symbol_values(req);
+ break;
+
+ case GNU_SET_CRASH_BLOCK:
+ gdb_set_crash_block(req);
+ break;
+
+ case GNU_GET_FUNCTION_RANGE:
+ {
+ CORE_ADDR start, end;
+ if (!find_pc_partial_function(req->pc, NULL, &start, &end))
+ req->flags |= GNU_COMMAND_FAILED;
+ else {
+ req->addr = (ulong)start;
+ req->addr2 = (ulong)end;
+ }
+ }
+ break;
+
+ case GNU_LOOKUP_STRUCT_CONTENTS:
+ req->value = lookup_struct_contents(req);
+ break;
+
+ case GNU_ITERATE_DATATYPES:
+ iterate_datatypes(req);
+ break;
+
+ default:
+ req->flags |= GNU_COMMAND_FAILED;
+ break;
+ }
+}
+
+/*
+ * Given a PC value, return the file and line number.
+ */
+static void
+gdb_get_line_number(struct gnu_request *req)
+{
+ struct symtab_and_line sal;
+ struct objfile *objfile;
+ CORE_ADDR pc;
+
+#define LASTCHAR(s) (s[strlen(s)-1])
+
+ /*
+ * Prime the addrmap pump.
+ */
+ pc = req->addr;
+
+ sal = find_pc_line(pc, 0);
+
+ if (!sal.symtab) {
+ /*
+ * If a module address line number can't be found, it's typically
+ * due to its addrmap still containing offset values because its
+ * objfile doesn't have full symbols loaded.
+ */
+ if (req->lm) {
+ objfile = req->lm->loaded_objfile;
+ if (!objfile_has_full_symbols(objfile)) {
+ objfile->expand_all_symtabs ();
+ sal = find_pc_line(pc, 0);
+ }
+ }
+ if (!sal.symtab) {
+ req->buf[0] = '\0';
+ return;
+ }
+ }
+
+ if (sal.symtab->filename && (sal.symtab)->compunit ()->dirname ()) {
+ if (sal.symtab->filename[0] == '/')
+ sprintf(req->buf, "%s: %d",
+ sal.symtab->filename, sal.line);
+ else
+ sprintf(req->buf, "%s%s%s: %d",
+ (sal.symtab)->compunit ()->dirname (),
+ LASTCHAR((sal.symtab)->compunit ()->dirname ()) == '/' ? "" : "/",
+ sal.symtab->filename, sal.line);
+ }
+}
+
+
+/*
+ * Follow the type linkage for full member and value type resolution, with callback
+ */
+static void drillDownType(struct gnu_request *req, struct type *type)
+{
+ while (type)
+ {
+ /* check out for stub types and pull in the definition instead */
+ if (type->is_stub() && TYPE_TAG_NAME(type)) {
+ struct symbol *sym;
+ sym = lookup_symbol(TYPE_TAG_NAME(type), 0, STRUCT_DOMAIN, 0).symbol;
+ if (sym)
+ type = sym->type();
+ }
+ switch (TYPE_CODE(type)) {
+ drill_ops_t op;
+ long l1, l2;
+ int typecode;
+
+ case TYPE_CODE_PTR:
+ req->tcb(EOP_POINTER, req, 0, 0, 0, 0);
+ break;
+
+ case TYPE_CODE_TYPEDEF:
+ req->is_typedef = 1;
+ req->typecode = TYPE_CODE(type);
+ if (!req->tcb(EOP_TYPEDEF, req, TYPE_NAME(type), 0, 0, 0))
+ return;
+ break;
+
+ case TYPE_CODE_FUNC:
+ req->tcb(EOP_FUNCTION, req, 0, 0, 0, 0);
+ break;
+
+ case TYPE_CODE_ARRAY:
+ l1 = type->length ();
+ l2 = check_typedef(type->target_type ())->length ();
+ req->tcb(EOP_ARRAY, req, &l1, &l2, 0, 0);
+ break;
+
+ case TYPE_CODE_VOID:
+ case TYPE_CODE_INT:
+ case TYPE_CODE_BOOL:
+ l1 = type->length ();
+ req->tcb(EOP_INT, req, &l1, 0, 0, 0);
+ break;
+
+ case TYPE_CODE_UNION: