/* Print values for GNU debugger GDB.
- Copyright (C) 1986-2018 Free Software Foundation, Inc.
+ Copyright (C) 1986-2019 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbtypes.h"
#include "value.h"
#include "language.h"
+#include "c-lang.h"
#include "expression.h"
#include "gdbcore.h"
#include "gdbcmd.h"
#include "block.h"
#include "disasm.h"
#include "target-float.h"
-#include "observer.h"
+#include "observable.h"
#include "solist.h"
#include "parser-defs.h"
#include "charset.h"
#include "arch-utils.h"
#include "cli/cli-utils.h"
+#include "cli/cli-option.h"
#include "cli/cli-script.h"
-#include "format.h"
+#include "cli/cli-style.h"
+#include "gdbsupport/format.h"
#include "source.h"
-#include "common/byte-vector.h"
-
-#ifdef TUI
-#include "tui/tui.h" /* For tui_active et al. */
-#endif
+#include "gdbsupport/byte-vector.h"
+#include "gdbsupport/gdb_optional.h"
/* Last specified output format. */
static char last_size = 'w';
+/* Last specified count for the 'x' command. */
+
+static int last_count;
+
/* Default address to examine next, and associated architecture. */
static struct gdbarch *next_gdbarch;
/* Contents of last address examined.
This is not valid past the end of the `x' command! */
-static struct value *last_examine_value;
+static value_ref_ptr last_examine_value;
/* Largest offset between a symbolic value and an address, that will be
printed as `0x1234 <symbol+offset>'. */
/* Append the source filename and linenumber of the symbol when
printing a symbolic value as `<symbol at filename:linenum>' if set. */
-static int print_symbol_filename = 0;
+static bool print_symbol_filename = false;
static void
show_print_symbol_filename (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
break;
}
- while (*p == ' ' || *p == '\t')
- p++;
- *string_ptr = p;
+ *string_ptr = skip_spaces (p);
/* Set defaults for format and size if not specified. */
if (val.format == '?')
{
struct gdbarch *gdbarch = get_type_arch (type);
unsigned int len = TYPE_LENGTH (type);
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ enum bfd_endian byte_order = type_byte_order (type);
/* String printing should go through val_print_scalar_formatted. */
gdb_assert (options->format != 's');
/* Historically gdb has printed floats by first casting them to a
long, and then printing the long. PR cli/16242 suggests changing
- this to using C-style hex float format. */
- gdb::byte_vector converted_float_bytes;
- if (TYPE_CODE (type) == TYPE_CODE_FLT
- && (options->format == 'o'
- || options->format == 'x'
- || options->format == 't'
- || options->format == 'z'
- || options->format == 'd'
- || options->format == 'u'))
- {
- LONGEST val_long = unpack_long (type, valaddr);
- converted_float_bytes.resize (TYPE_LENGTH (type));
- store_signed_integer (converted_float_bytes.data (), TYPE_LENGTH (type),
- byte_order, val_long);
- valaddr = converted_float_bytes.data ();
+ this to using C-style hex float format.
+
+ Biased range types must also be unbiased here; the unbiasing is
+ done by unpack_long. */
+ gdb::byte_vector converted_bytes;
+ /* Some cases below will unpack the value again. In the biased
+ range case, we want to avoid this, so we store the unpacked value
+ here for possible use later. */
+ gdb::optional<LONGEST> val_long;
+ if ((TYPE_CODE (type) == TYPE_CODE_FLT
+ && (options->format == 'o'
+ || options->format == 'x'
+ || options->format == 't'
+ || options->format == 'z'
+ || options->format == 'd'
+ || options->format == 'u'))
+ || (TYPE_CODE (type) == TYPE_CODE_RANGE
+ && TYPE_RANGE_DATA (type)->bias != 0))
+ {
+ val_long.emplace (unpack_long (type, valaddr));
+ converted_bytes.resize (TYPE_LENGTH (type));
+ store_signed_integer (converted_bytes.data (), TYPE_LENGTH (type),
+ byte_order, *val_long);
+ valaddr = converted_bytes.data ();
}
/* Printing a non-float type as 'f' will interpret the data as if it were
{
struct value_print_options opts = *options;
- LONGEST val_long = unpack_long (type, valaddr);
+ if (!val_long.has_value ())
+ val_long.emplace (unpack_long (type, valaddr));
opts.format = 0;
if (TYPE_UNSIGNED (type))
else
type = builtin_type (gdbarch)->builtin_true_char;
- value_print (value_from_longest (type, val_long), stream, &opts);
+ value_print (value_from_longest (type, *val_long), stream, &opts);
}
break;
case 'a':
{
- CORE_ADDR addr = unpack_pointer (type, valaddr);
-
- print_address (gdbarch, addr, stream);
+ if (!val_long.has_value ())
+ val_long.emplace (unpack_long (type, valaddr));
+ print_address (gdbarch, *val_long, stream);
}
break;
struct ui_file *stream,
int do_demangle, const char *leadin)
{
- char *name = NULL;
- char *filename = NULL;
+ std::string name, filename;
int unmapped = 0;
int offset = 0;
int line = 0;
- /* Throw away both name and filename. */
- struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name);
- make_cleanup (free_current_contents, &filename);
-
- if (build_address_symbolic (gdbarch, addr, do_demangle, &name, &offset,
- &filename, &line, &unmapped))
- {
- do_cleanups (cleanup_chain);
- return 0;
- }
+ if (build_address_symbolic (gdbarch, addr, do_demangle, false, &name,
+ &offset, &filename, &line, &unmapped))
+ return 0;
fputs_filtered (leadin, stream);
if (unmapped)
fputs_filtered ("<*", stream);
else
fputs_filtered ("<", stream);
- fputs_filtered (name, stream);
+ fputs_styled (name.c_str (), function_name_style.style (), stream);
if (offset != 0)
- fprintf_filtered (stream, "+%u", (unsigned int) offset);
+ fprintf_filtered (stream, "%+d", offset);
/* Append source filename and line number if desired. Give specific
line # of this addr, if we have it; else line # of the nearest symbol. */
- if (print_symbol_filename && filename != NULL)
+ if (print_symbol_filename && !filename.empty ())
{
+ fputs_filtered (line == -1 ? " in " : " at ", stream);
+ fputs_styled (filename.c_str (), file_name_style.style (), stream);
if (line != -1)
- fprintf_filtered (stream, " at %s:%d", filename, line);
- else
- fprintf_filtered (stream, " in %s", filename);
+ fprintf_filtered (stream, ":%d", line);
}
if (unmapped)
fputs_filtered ("*>", stream);
else
fputs_filtered (">", stream);
- do_cleanups (cleanup_chain);
return 1;
}
-/* Given an address ADDR return all the elements needed to print the
- address in a symbolic form. NAME can be mangled or not depending
- on DO_DEMANGLE (and also on the asm_demangle global variable,
- manipulated via ''set print asm-demangle''). Return 0 in case of
- success, when all the info in the OUT paramters is valid. Return 1
- otherwise. */
+/* See valprint.h. */
+
int
build_address_symbolic (struct gdbarch *gdbarch,
CORE_ADDR addr, /* IN */
- int do_demangle, /* IN */
- char **name, /* OUT */
+ bool do_demangle, /* IN */
+ bool prefer_sym_over_minsym, /* IN */
+ std::string *name, /* OUT */
int *offset, /* OUT */
- char **filename, /* OUT */
+ std::string *filename, /* OUT */
int *line, /* OUT */
int *unmapped) /* OUT */
{
}
}
- /* First try to find the address in the symbol table, then
- in the minsyms. Take the closest one. */
+ /* Try to find the address in both the symbol table and the minsyms.
+ In most cases, we'll prefer to use the symbol instead of the
+ minsym. However, there are cases (see below) where we'll choose
+ to use the minsym instead. */
/* This is defective in the sense that it only finds text symbols. So
really this is kind of pointless--we should make sure that the
pointer is <function+3>. This matches the ISA behavior. */
addr = gdbarch_addr_bits_remove (gdbarch, addr);
- name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol));
+ name_location = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (symbol));
if (do_demangle || asm_demangle)
- name_temp = SYMBOL_PRINT_NAME (symbol);
+ name_temp = symbol->print_name ();
else
- name_temp = SYMBOL_LINKAGE_NAME (symbol);
+ name_temp = symbol->linkage_name ();
}
if (msymbol.minsym != NULL
if (msymbol.minsym != NULL)
{
- if (BMSYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL)
+ /* Use the minsym if no symbol is found.
+
+ Additionally, use the minsym instead of a (found) symbol if
+ the following conditions all hold:
+ 1) The prefer_sym_over_minsym flag is false.
+ 2) The minsym address is identical to that of the address under
+ consideration.
+ 3) The symbol address is not identical to that of the address
+ under consideration. */
+ if (symbol == NULL ||
+ (!prefer_sym_over_minsym
+ && BMSYMBOL_VALUE_ADDRESS (msymbol) == addr
+ && name_location != addr))
{
/* If this is a function (i.e. a code address), strip out any
non-address bits. For instance, display a pointer to the
|| MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline)
addr = gdbarch_addr_bits_remove (gdbarch, addr);
- /* The msymbol is closer to the address than the symbol;
- use the msymbol instead. */
symbol = 0;
name_location = BMSYMBOL_VALUE_ADDRESS (msymbol);
if (do_demangle || asm_demangle)
- name_temp = MSYMBOL_PRINT_NAME (msymbol.minsym);
+ name_temp = msymbol.minsym->print_name ();
else
- name_temp = MSYMBOL_LINKAGE_NAME (msymbol.minsym);
+ name_temp = msymbol.minsym->linkage_name ();
}
}
if (symbol == NULL && msymbol.minsym == NULL)
&& name_location + max_symbolic_offset > name_location)
return 1;
- *offset = addr - name_location;
+ *offset = (LONGEST) addr - name_location;
- *name = xstrdup (name_temp);
+ *name = name_temp;
if (print_symbol_filename)
{
if (sal.symtab)
{
- *filename = xstrdup (symtab_to_filename_for_display (sal.symtab));
+ *filename = symtab_to_filename_for_display (sal.symtab);
*line = sal.line;
}
}
print_address (struct gdbarch *gdbarch,
CORE_ADDR addr, struct ui_file *stream)
{
- fputs_filtered (paddress (gdbarch, addr), stream);
+ fputs_styled (paddress (gdbarch, addr), address_style.style (), stream);
print_address_symbolic (gdbarch, addr, stream, asm_demangle, " ");
}
{
if (opts->addressprint)
{
- fputs_filtered (paddress (gdbarch, addr), stream);
+ fputs_styled (paddress (gdbarch, addr), address_style.style (), stream);
print_address_symbolic (gdbarch, addr, stream, do_demangle, " ");
}
else
object. */
last_examine_address = next_address;
- if (last_examine_value)
- value_free (last_examine_value);
-
/* The value to be displayed is not fetched greedily.
Instead, to avoid the possibility of a fetched value not
being used, its retrieval is delayed until the print code
the disassembler be modified so that LAST_EXAMINE_VALUE
is left with the byte sequence from the last complete
instruction fetched from memory? */
- last_examine_value = value_at_lazy (val_type, next_address);
+ last_examine_value
+ = release_value (value_at_lazy (val_type, next_address));
- if (last_examine_value)
- release_value (last_examine_value);
-
- print_formatted (last_examine_value, size, &opts, gdb_stdout);
+ print_formatted (last_examine_value.get (), size, &opts, gdb_stdout);
/* Display any branch delay slots following the final insn. */
if (format == 'i' && count == 1)
count += branch_delay_insns;
}
printf_filtered ("\n");
- gdb_flush (gdb_stdout);
}
if (need_to_update_next_address)
fmt.format, cmdname);
}
-/* Parse print command format string into *FMTP and update *EXPP.
+/* Parse print command format string into *OPTS and update *EXPP.
CMDNAME should name the current command. */
void
print_command_parse_format (const char **expp, const char *cmdname,
- struct format_data *fmtp)
+ value_print_options *opts)
{
const char *exp = *expp;
+ /* opts->raw value might already have been set by 'set print raw-values'
+ or by using 'print -raw-values'.
+ So, do not set opts->raw to 0, only set it to 1 if /r is given. */
if (exp && *exp == '/')
{
+ format_data fmt;
+
exp++;
- *fmtp = decode_format (&exp, last_format, 0);
- validate_format (*fmtp, cmdname);
- last_format = fmtp->format;
+ fmt = decode_format (&exp, last_format, 0);
+ validate_format (fmt, cmdname);
+ last_format = fmt.format;
+
+ opts->format = fmt.format;
+ opts->raw = opts->raw || fmt.raw;
}
else
{
- fmtp->count = 1;
- fmtp->format = 0;
- fmtp->size = 0;
- fmtp->raw = 0;
+ opts->format = 0;
}
*expp = exp;
}
-/* Print VAL to console according to *FMTP, including recording it to
- the history. */
+/* See valprint.h. */
void
-print_value (struct value *val, const struct format_data *fmtp)
+print_value (value *val, const value_print_options &opts)
{
- struct value_print_options opts;
int histindex = record_latest_value (val);
annotate_value_history_begin (histindex, value_type (val));
annotate_value_history_value ();
- get_formatted_print_options (&opts, fmtp->format);
- opts.raw = fmtp->raw;
-
- print_formatted (val, fmtp->size, &opts, gdb_stdout);
+ print_formatted (val, 0, &opts, gdb_stdout);
printf_filtered ("\n");
annotate_value_history_end ();
}
-/* Evaluate string EXP as an expression in the current language and
- print the resulting value. EXP may contain a format specifier as the
- first argument ("/x myvar" for example, to print myvar in hex). */
+/* Implementation of the "print" and "call" commands. */
static void
-print_command_1 (const char *exp, int voidprint)
+print_command_1 (const char *args, int voidprint)
{
struct value *val;
- struct format_data fmt;
+ 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 (&exp, "print", &fmt);
+ print_command_parse_format (&args, "print", &print_opts);
- if (exp && *exp)
+ const char *exp = args;
+
+ if (exp != nullptr && *exp)
{
expression_up expr = parse_expression (exp);
val = evaluate_expression (expr.get ());
if (voidprint || (val && value_type (val) &&
TYPE_CODE (value_type (val)) != TYPE_CODE_VOID))
- print_value (val, &fmt);
+ print_value (val, print_opts);
+}
+
+/* See valprint.h. */
+
+void
+print_command_completer (struct cmd_list_element *ignore,
+ completion_tracker &tracker,
+ const char *text, const char * /*word*/)
+{
+ const auto group = make_value_print_options_def_group (nullptr);
+ if (gdb::option::complete_options
+ (tracker, &text, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group))
+ return;
+
+ const char *word = advance_to_expression_complete_word_point (tracker, text);
+ expression_completer (ignore, tracker, text, word);
}
static void
/* Implementation of the "output" command. */
-static void
-output_command (const char *exp, int from_tty)
-{
- output_command_const (exp, from_tty);
-}
-
-/* Like output_command, but takes a const string as argument. */
-
void
-output_command_const (const char *exp, int from_tty)
+output_command (const char *exp, int from_tty)
{
char format = 0;
struct value *val;
info_symbol_command (const char *arg, int from_tty)
{
struct minimal_symbol *msymbol;
- struct objfile *objfile;
struct obj_section *osect;
CORE_ADDR addr, sect_addr;
int matches = 0;
error_no_arg (_("address"));
addr = parse_and_eval_address (arg);
- ALL_OBJSECTIONS (objfile, osect)
- {
- /* Only process each object file once, even if there's a separate
- debug file. */
- if (objfile->separate_debug_objfile_backlink)
- continue;
-
- sect_addr = overlay_mapped_address (addr, osect);
-
- if (obj_section_addr (osect) <= sect_addr
- && sect_addr < obj_section_endaddr (osect)
- && (msymbol
- = lookup_minimal_symbol_by_pc_section (sect_addr, osect).minsym))
+ for (objfile *objfile : current_program_space->objfiles ())
+ ALL_OBJFILE_OSECTIONS (objfile, osect)
{
- const char *obj_name, *mapped, *sec_name, *msym_name;
- const char *loc_string;
- struct cleanup *old_chain;
-
- matches = 1;
- offset = sect_addr - MSYMBOL_VALUE_ADDRESS (objfile, msymbol);
- mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped");
- sec_name = osect->the_bfd_section->name;
- msym_name = MSYMBOL_PRINT_NAME (msymbol);
-
- /* Don't print the offset if it is zero.
- We assume there's no need to handle i18n of "sym + offset". */
- std::string string_holder;
- if (offset)
+ /* Only process each object file once, even if there's a separate
+ debug file. */
+ if (objfile->separate_debug_objfile_backlink)
+ continue;
+
+ sect_addr = overlay_mapped_address (addr, osect);
+
+ if (obj_section_addr (osect) <= sect_addr
+ && sect_addr < obj_section_endaddr (osect)
+ && (msymbol
+ = lookup_minimal_symbol_by_pc_section (sect_addr,
+ osect).minsym))
{
- string_holder = string_printf ("%s + %u", msym_name, offset);
- loc_string = string_holder.c_str ();
- }
- else
- loc_string = msym_name;
-
- gdb_assert (osect->objfile && objfile_name (osect->objfile));
- obj_name = objfile_name (osect->objfile);
-
- if (MULTI_OBJFILE_P ())
- if (pc_in_unmapped_range (addr, osect))
- if (section_is_overlay (osect))
- printf_filtered (_("%s in load address range of "
- "%s overlay section %s of %s\n"),
- loc_string, mapped, sec_name, obj_name);
- else
- printf_filtered (_("%s in load address range of "
- "section %s of %s\n"),
- loc_string, sec_name, obj_name);
- else
- if (section_is_overlay (osect))
- printf_filtered (_("%s in %s overlay section %s of %s\n"),
- loc_string, mapped, sec_name, obj_name);
- else
- printf_filtered (_("%s in section %s of %s\n"),
- loc_string, sec_name, obj_name);
- else
- if (pc_in_unmapped_range (addr, osect))
- if (section_is_overlay (osect))
- printf_filtered (_("%s in load address range of %s overlay "
- "section %s\n"),
- loc_string, mapped, sec_name);
+ const char *obj_name, *mapped, *sec_name, *msym_name;
+ const char *loc_string;
+
+ matches = 1;
+ offset = sect_addr - MSYMBOL_VALUE_ADDRESS (objfile, msymbol);
+ mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped");
+ sec_name = osect->the_bfd_section->name;
+ msym_name = msymbol->print_name ();
+
+ /* Don't print the offset if it is zero.
+ We assume there's no need to handle i18n of "sym + offset". */
+ std::string string_holder;
+ if (offset)
+ {
+ string_holder = string_printf ("%s + %u", msym_name, offset);
+ loc_string = string_holder.c_str ();
+ }
else
- printf_filtered (_("%s in load address range of section %s\n"),
- loc_string, sec_name);
- else
- if (section_is_overlay (osect))
- printf_filtered (_("%s in %s overlay section %s\n"),
- loc_string, mapped, sec_name);
+ loc_string = msym_name;
+
+ gdb_assert (osect->objfile && objfile_name (osect->objfile));
+ obj_name = objfile_name (osect->objfile);
+
+ if (current_program_space->multi_objfile_p ())
+ if (pc_in_unmapped_range (addr, osect))
+ if (section_is_overlay (osect))
+ printf_filtered (_("%s in load address range of "
+ "%s overlay section %s of %s\n"),
+ loc_string, mapped, sec_name, obj_name);
+ else
+ printf_filtered (_("%s in load address range of "
+ "section %s of %s\n"),
+ loc_string, sec_name, obj_name);
+ else
+ if (section_is_overlay (osect))
+ printf_filtered (_("%s in %s overlay section %s of %s\n"),
+ loc_string, mapped, sec_name, obj_name);
+ else
+ printf_filtered (_("%s in section %s of %s\n"),
+ loc_string, sec_name, obj_name);
else
- printf_filtered (_("%s in section %s\n"),
- loc_string, sec_name);
+ if (pc_in_unmapped_range (addr, osect))
+ if (section_is_overlay (osect))
+ printf_filtered (_("%s in load address range of %s overlay "
+ "section %s\n"),
+ loc_string, mapped, sec_name);
+ else
+ printf_filtered
+ (_("%s in load address range of section %s\n"),
+ loc_string, sec_name);
+ else
+ if (section_is_overlay (osect))
+ printf_filtered (_("%s in %s overlay section %s\n"),
+ loc_string, mapped, sec_name);
+ else
+ printf_filtered (_("%s in section %s\n"),
+ loc_string, sec_name);
+ }
}
- }
if (matches == 0)
printf_filtered (_("No symbol matches %s.\n"), arg);
}
fprintf_symbol_filtered (gdb_stdout, exp,
current_language->la_language, DMGL_ANSI);
printf_filtered ("\" is at ");
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
+ gdb_stdout);
printf_filtered (" in a file compiled without debugging");
section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym);
if (section_is_overlay (section))
{
load_addr = overlay_unmapped_address (load_addr, section);
printf_filtered (",\n -- loaded at ");
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr),
+ address_style.style (),
+ gdb_stdout);
printf_filtered (" in overlay section %s",
section->the_bfd_section->name);
}
}
printf_filtered ("Symbol \"");
- fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym),
+ fprintf_symbol_filtered (gdb_stdout, sym->print_name (),
current_language->la_language, DMGL_ANSI);
printf_filtered ("\" is ");
val = SYMBOL_VALUE (sym);
case LOC_LABEL:
printf_filtered ("a label at address ");
load_addr = SYMBOL_VALUE_ADDRESS (sym);
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
+ gdb_stdout);
if (section_is_overlay (section))
{
load_addr = overlay_unmapped_address (load_addr, section);
printf_filtered (",\n -- loaded at ");
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
+ gdb_stdout);
printf_filtered (" in overlay section %s",
section->the_bfd_section->name);
}
case LOC_STATIC:
printf_filtered (_("static storage at address "));
load_addr = SYMBOL_VALUE_ADDRESS (sym);
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
+ gdb_stdout);
if (section_is_overlay (section))
{
load_addr = overlay_unmapped_address (load_addr, section);
printf_filtered (_(",\n -- loaded at "));
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
+ gdb_stdout);
printf_filtered (_(" in overlay section %s"),
section->the_bfd_section->name);
}
case LOC_BLOCK:
printf_filtered (_("a function at address "));
- load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ load_addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym));
+ fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
+ gdb_stdout);
if (section_is_overlay (section))
{
load_addr = overlay_unmapped_address (load_addr, section);
printf_filtered (_(",\n -- loaded at "));
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
+ gdb_stdout);
printf_filtered (_(" in overlay section %s"),
section->the_bfd_section->name);
}
{
struct bound_minimal_symbol msym;
- msym = lookup_minimal_symbol_and_objfile (SYMBOL_LINKAGE_NAME (sym));
+ msym = lookup_bound_minimal_symbol (sym->linkage_name ());
if (msym.minsym == NULL)
printf_filtered ("unresolved");
else
{
load_addr = BMSYMBOL_VALUE_ADDRESS (msym);
printf_filtered (_("static storage at address "));
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr),
+ address_style.style (), gdb_stdout);
if (section_is_overlay (section))
{
load_addr = overlay_unmapped_address (load_addr, section);
printf_filtered (_(",\n -- loaded at "));
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr),
+ address_style.style (),
+ gdb_stdout);
printf_filtered (_(" in overlay section %s"),
section->the_bfd_section->name);
}
fmt.count = 1;
fmt.raw = 0;
+ /* If there is no expression and no format, use the most recent
+ count. */
+ if (exp == nullptr && last_count > 0)
+ fmt.count = last_count;
+
if (exp && *exp == '/')
{
const char *tmp = exp + 1;
exp = (char *) tmp;
}
+ last_count = fmt.count;
+
/* If we have an expression, evaluate it and use it as the address. */
if (exp != 0 && *exp != 0)
last_format = fmt.format;
/* Set a couple of internal variables if appropriate. */
- if (last_examine_value)
+ if (last_examine_value != nullptr)
{
/* Make last address examined available to the user as $_. Use
the correct pointer type. */
struct type *pointer_type
- = lookup_pointer_type (value_type (last_examine_value));
+ = lookup_pointer_type (value_type (last_examine_value.get ()));
set_internalvar (lookup_internalvar ("_"),
value_from_pointer (pointer_type,
last_examine_address));
as $__. If the last value has not been fetched from memory
then don't fetch it now; instead mark it by voiding the $__
variable. */
- if (value_lazy (last_examine_value))
+ if (value_lazy (last_examine_value.get ()))
clear_internalvar (lookup_internalvar ("__"));
else
- set_internalvar (lookup_internalvar ("__"), last_examine_value);
+ set_internalvar (lookup_internalvar ("__"), last_examine_value.get ());
}
}
\f
fmt.raw = 0;
}
- innermost_block.reset ();
- expression_up expr = parse_expression (exp);
+ innermost_block_tracker tracker;
+ expression_up expr = parse_expression (exp, &tracker);
newobj = new display ();
newobj->exp_string = xstrdup (exp);
newobj->exp = std::move (expr);
- newobj->block = innermost_block.block ();
+ newobj->block = tracker.block ();
newobj->pspace = current_program_space;
newobj->number = ++display_number;
newobj->format = fmt;
if (d->exp == NULL)
{
- TRY
+ try
{
- innermost_block.reset ();
- d->exp = parse_expression (d->exp_string);
- d->block = innermost_block.block ();
+ innermost_block_tracker tracker;
+ d->exp = parse_expression (d->exp_string, &tracker);
+ d->block = tracker.block ();
}
- CATCH (ex, RETURN_MASK_ALL)
+ catch (const gdb_exception &ex)
{
/* Can't re-parse the expression. Disable this display item. */
d->enabled_p = 0;
warning (_("Unable to display \"%s\": %s"),
- d->exp_string, ex.message);
+ d->exp_string, ex.what ());
return;
}
- END_CATCH
}
if (d->block)
{
if (d->pspace == current_program_space)
- within_current_scope = contained_in (get_selected_block (0), d->block);
+ within_current_scope = contained_in (get_selected_block (0), d->block,
+ true);
else
within_current_scope = 0;
}
annotate_display_value ();
- TRY
+ try
{
struct value *val;
CORE_ADDR addr;
addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr);
do_examine (d->format, d->exp->gdbarch, addr);
}
- CATCH (ex, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &ex)
{
- fprintf_filtered (gdb_stdout, _("<error: %s>\n"), ex.message);
+ fprintf_filtered (gdb_stdout, _("%p[<error: %s>%p]\n"),
+ metadata_style.style ().ptr (), ex.what (),
+ nullptr);
}
- END_CATCH
}
else
{
get_formatted_print_options (&opts, d->format.format);
opts.raw = d->format.raw;
- TRY
+ try
{
struct value *val;
val = evaluate_expression (d->exp.get ());
print_formatted (val, d->format.size, &opts, gdb_stdout);
}
- CATCH (ex, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &ex)
{
- fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.message);
+ fprintf_styled (gdb_stdout, metadata_style.style (),
+ _("<error: %s>"), ex.what ());
}
- END_CATCH
printf_filtered ("\n");
}
else if (d->format.format)
printf_filtered ("/%c ", d->format.format);
puts_filtered (d->exp_string);
- if (d->block && !contained_in (get_selected_block (0), d->block))
+ if (d->block && !contained_in (get_selected_block (0), d->block, true))
printf_filtered (_(" (cannot be evaluated in the current context)"));
printf_filtered ("\n");
- gdb_flush (gdb_stdout);
}
}
d->enabled_p = *(int *) data;
}
-/* Implamentation of both the "disable display" and "enable display"
+/* Implementation of both the "disable display" and "enable display"
commands. ENABLE decides what to do. */
static void
{
if (!name)
- name = SYMBOL_PRINT_NAME (var);
+ name = var->print_name ();
+
+ fprintf_filtered (stream, "%s%ps = ", n_spaces (2 * indent),
+ styled_string (variable_name_style.style (), name));
- fprintf_filtered (stream, "%s%s = ", n_spaces (2 * indent), name);
- TRY
+ try
{
struct value *val;
struct value_print_options opts;
function. */
frame = NULL;
}
- CATCH (except, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &except)
{
- fprintf_filtered(stream, "<error reading variable %s (%s)>", name,
- except.message);
+ fprintf_styled (stream, metadata_style.style (),
+ "<error reading variable %s (%s)>", name,
+ except.what ());
}
- END_CATCH
fprintf_filtered (stream, "\n");
}
/* Subroutine of ui_printf to simplify it.
Print VALUE to STREAM using FORMAT.
- VALUE is a C-style string on the target. */
+ VALUE is a C-style string either on the target or
+ in a GDB internal variable. */
static void
printf_c_string (struct ui_file *stream, const char *format,
struct value *value)
{
- gdb_byte *str;
- CORE_ADDR tem;
- int j;
+ const gdb_byte *str;
- tem = value_as_address (value);
-
- /* This is a %s argument. Find the length of the string. */
- for (j = 0;; j++)
+ if (VALUE_LVAL (value) == lval_internalvar
+ && c_is_string_type_p (value_type (value)))
{
- gdb_byte c;
+ size_t len = TYPE_LENGTH (value_type (value));
- QUIT;
- read_memory (tem + j, &c, 1);
- if (c == 0)
- break;
+ /* Copy the internal var value to TEM_STR and append a terminating null
+ character. This protects against corrupted C-style strings that lack
+ the terminating null char. It also allows Ada-style strings (not
+ null terminated) to be printed without problems. */
+ gdb_byte *tem_str = (gdb_byte *) alloca (len + 1);
+
+ memcpy (tem_str, value_contents (value), len);
+ tem_str [len] = 0;
+ str = tem_str;
}
+ else
+ {
+ CORE_ADDR tem = value_as_address (value);;
+
+ if (tem == 0)
+ {
+ DIAGNOSTIC_PUSH
+ DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
+ fprintf_filtered (stream, format, "(null)");
+ DIAGNOSTIC_POP
+ return;
+ }
+
+ /* This is a %s argument. Find the length of the string. */
+ size_t len;
+
+ for (len = 0;; len++)
+ {
+ gdb_byte c;
+
+ QUIT;
+ read_memory (tem + len, &c, 1);
+ if (c == 0)
+ break;
+ }
- /* Copy the string contents into a string inside GDB. */
- str = (gdb_byte *) alloca (j + 1);
- if (j != 0)
- read_memory (tem, str, j);
- str[j] = 0;
+ /* Copy the string contents into a string inside GDB. */
+ gdb_byte *tem_str = (gdb_byte *) alloca (len + 1);
+ if (len != 0)
+ read_memory (tem, tem_str, len);
+ tem_str[len] = 0;
+ str = tem_str;
+ }
+
+ DIAGNOSTIC_PUSH
+ DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
fprintf_filtered (stream, format, (char *) str);
+ DIAGNOSTIC_POP
}
/* Subroutine of ui_printf to simplify it.
Print VALUE to STREAM using FORMAT.
- VALUE is a wide C-style string on the target. */
+ VALUE is a wide C-style string on the target or
+ in a GDB internal variable. */
static void
printf_wide_c_string (struct ui_file *stream, const char *format,
struct value *value)
{
- gdb_byte *str;
- CORE_ADDR tem;
- int j;
+ const gdb_byte *str;
+ size_t len;
struct gdbarch *gdbarch = get_type_arch (value_type (value));
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- struct type *wctype = lookup_typename (current_language, gdbarch,
+ struct type *wctype = lookup_typename (current_language,
"wchar_t", NULL, 0);
int wcwidth = TYPE_LENGTH (wctype);
- gdb_byte *buf = (gdb_byte *) alloca (wcwidth);
-
- tem = value_as_address (value);
- /* This is a %s argument. Find the length of the string. */
- for (j = 0;; j += wcwidth)
+ if (VALUE_LVAL (value) == lval_internalvar
+ && c_is_string_type_p (value_type (value)))
{
- QUIT;
- read_memory (tem + j, buf, wcwidth);
- if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0)
- break;
+ str = value_contents (value);
+ len = TYPE_LENGTH (value_type (value));
}
+ else
+ {
+ CORE_ADDR tem = value_as_address (value);
- /* Copy the string contents into a string inside GDB. */
- str = (gdb_byte *) alloca (j + wcwidth);
- if (j != 0)
- read_memory (tem, str, j);
- memset (&str[j], 0, wcwidth);
+ if (tem == 0)
+ {
+ DIAGNOSTIC_PUSH
+ DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
+ fprintf_filtered (stream, format, "(null)");
+ DIAGNOSTIC_POP
+ return;
+ }
+
+ /* This is a %s argument. Find the length of the string. */
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ gdb_byte *buf = (gdb_byte *) alloca (wcwidth);
+
+ for (len = 0;; len += wcwidth)
+ {
+ QUIT;
+ read_memory (tem + len, buf, wcwidth);
+ if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0)
+ break;
+ }
+
+ /* Copy the string contents into a string inside GDB. */
+ gdb_byte *tem_str = (gdb_byte *) alloca (len + wcwidth);
+
+ if (len != 0)
+ read_memory (tem, tem_str, len);
+ memset (&tem_str[len], 0, wcwidth);
+ str = tem_str;
+ }
auto_obstack output;
convert_between_encodings (target_wide_charset (gdbarch),
host_charset (),
- str, j, wcwidth,
+ str, len, wcwidth,
&output, translit_char);
obstack_grow_str0 (&output, "");
+ DIAGNOSTIC_PUSH
+ DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
fprintf_filtered (stream, format, obstack_base (&output));
+ DIAGNOSTIC_POP
}
/* Subroutine of ui_printf to simplify it.
/* Parameter data. */
struct type *param_type = value_type (value);
struct gdbarch *gdbarch = get_type_arch (param_type);
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
/* Determine target type corresponding to the format string. */
struct type *fmt_type;
if (val != 0)
*fmt_p++ = '#';
- /* Copy any width. */
- while (*p >= '0' && *p < '9')
+ /* Copy any width or flags. Only the "-" flag is valid for pointers
+ -- see the format_pieces constructor. */
+ while (*p == '-' || (*p >= '0' && *p < '9'))
*fmt_p++ = *p++;
gdb_assert (*p == 'p' && *(p + 1) == '\0');
*fmt_p++ = 'l';
*fmt_p++ = 'x';
*fmt_p++ = '\0';
+ DIAGNOSTIC_PUSH
+ DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
fprintf_filtered (stream, fmt, val);
+ DIAGNOSTIC_POP
}
else
{
*fmt_p++ = 's';
*fmt_p++ = '\0';
+ DIAGNOSTIC_PUSH
+ DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
fprintf_filtered (stream, fmt, "(nil)");
+ DIAGNOSTIC_POP
}
}
{
struct gdbarch *gdbarch
= get_type_arch (value_type (val_args[i]));
- struct type *wctype = lookup_typename (current_language, gdbarch,
+ struct type *wctype = lookup_typename (current_language,
"wchar_t", NULL, 0);
struct type *valtype;
const gdb_byte *bytes;
&output, translit_char);
obstack_grow_str0 (&output, "");
+ DIAGNOSTIC_PUSH
+ DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
fprintf_filtered (stream, current_substring,
obstack_base (&output));
+ DIAGNOSTIC_POP
}
break;
case long_long_arg:
{
long long val = value_as_long (val_args[i]);
+ DIAGNOSTIC_PUSH
+ DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
fprintf_filtered (stream, current_substring, val);
+ DIAGNOSTIC_POP
break;
}
#else
{
int val = value_as_long (val_args[i]);
+ DIAGNOSTIC_PUSH
+ DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
fprintf_filtered (stream, current_substring, val);
+ DIAGNOSTIC_POP
break;
}
case long_arg:
{
long val = value_as_long (val_args[i]);
+ DIAGNOSTIC_PUSH
+ DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
fprintf_filtered (stream, current_substring, val);
+ DIAGNOSTIC_POP
+ break;
+ }
+ case size_t_arg:
+ {
+ size_t val = value_as_long (val_args[i]);
+
+ DIAGNOSTIC_PUSH
+ DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
+ fprintf_filtered (stream, current_substring, val);
+ DIAGNOSTIC_POP
break;
}
/* Handles floating-point values. */
have modified GCC to include -Wformat-security by
default, which will warn here if there is no
argument. */
+ DIAGNOSTIC_PUSH
+ DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
fprintf_filtered (stream, current_substring, 0);
+ DIAGNOSTIC_POP
break;
default:
internal_error (__FILE__, __LINE__,
printf_command (const char *arg, int from_tty)
{
ui_printf (arg, gdb_stdout);
+ reset_terminal_style (gdb_stdout);
+ wrap_here ("");
gdb_flush (gdb_stdout);
}
current_display_number = -1;
- observer_attach_free_objfile (clear_dangling_display_expressions);
+ gdb::observers::free_objfile.attach (clear_dangling_display_expressions);
add_info ("address", info_address_command,
- _("Describe where symbol SYM is stored."));
+ _("Describe where symbol SYM is stored.\n\
+Usage: info address SYM"));
add_info ("symbol", info_symbol_command, _("\
Describe what symbol is at location ADDR.\n\
+Usage: info symbol ADDR\n\
Only for symbols with fixed locations (global or static scope)."));
add_com ("x", class_vars, x_command, _("\
Default count is 1. Default address is following last thing printed\n\
with this command or \"print\"."));
-#if 0
- add_com ("whereis", class_vars, whereis_command,
- _("Print line number and file of definition of variable."));
-#endif
-
add_info ("display", info_display_command, _("\
-Expressions to display when program stops, with code numbers."));
+Expressions to display when program stops, with code numbers.\n\
+Usage: info display"));
add_cmd ("undisplay", class_vars, undisplay_command, _("\
Cancel some expressions to be displayed when program stops.\n\
+Usage: undisplay [NUM]...\n\
Arguments are the code numbers of the expressions to stop displaying.\n\
No argument means cancel all automatic-display expressions.\n\
\"delete display\" has the same effect as this command.\n\
add_com ("display", class_vars, display_command, _("\
Print value of expression EXP each time the program stops.\n\
+Usage: display[/FMT] EXP\n\
/FMT may be used before EXP as in the \"print\" command.\n\
/FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
as in the \"x\" command, and then EXP is used to get the address to examine\n\
add_cmd ("display", class_vars, enable_display_command, _("\
Enable some expressions to be displayed when program stops.\n\
+Usage: enable display [NUM]...\n\
Arguments are the code numbers of the expressions to resume displaying.\n\
No argument means enable all automatic-display expressions.\n\
Do \"info display\" to see current list of code numbers."), &enablelist);
add_cmd ("display", class_vars, disable_display_command, _("\
Disable some expressions to be displayed when program stops.\n\
+Usage: disable display [NUM]...\n\
Arguments are the code numbers of the expressions to stop displaying.\n\
No argument means disable all automatic-display expressions.\n\
Do \"info display\" to see current list of code numbers."), &disablelist);
add_cmd ("display", class_vars, undisplay_command, _("\
Cancel some expressions to be displayed when program stops.\n\
+Usage: delete display [NUM]...\n\
Arguments are the code numbers of the expressions to stop displaying.\n\
No argument means cancel all automatic-display expressions.\n\
Do \"info display\" to see current list of code numbers."), &deletelist);
add_com ("printf", class_vars, printf_command, _("\
Formatted printing, like the C \"printf\" function.\n\
-Usage: printf \"format string\", arg1, arg2, arg3, ..., argn\n\
+Usage: printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\
This supports most C printf format specifications, like %s, %d, etc."));
add_com ("output", class_vars, output_command, _("\
Like \"print\" but don't put in value history and don't print newline.\n\
+Usage: output EXP\n\
This is useful in user-defined commands."));
add_prefix_cmd ("set", class_vars, set_command, _("\
-Evaluate expression EXP and assign result to variable VAR, using assignment\n\
-syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
-example). VAR may be a debugger \"convenience\" variable (names starting\n\
+Evaluate expression EXP and assign result to variable VAR.\n\
+Usage: set VAR = EXP\n\
+This uses assignment syntax appropriate for the current language\n\
+(VAR = EXP or VAR := EXP for example).\n\
+VAR may be a debugger \"convenience\" variable (names starting\n\
with $), a register (a few standard names starting with $), or an actual\n\
variable in the program being debugged. EXP is any valid expression.\n\
Use \"set variable\" for variables with names identical to set subcommands.\n\
&setlist, "set ", 1, &cmdlist);
if (dbx_commands)
add_com ("assign", class_vars, set_command, _("\
-Evaluate expression EXP and assign result to variable VAR, using assignment\n\
-syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
-example). VAR may be a debugger \"convenience\" variable (names starting\n\
+Evaluate expression EXP and assign result to variable VAR.\n\
+Usage: assign VAR = EXP\n\
+This uses assignment syntax appropriate for the current language\n\
+(VAR = EXP or VAR := EXP for example).\n\
+VAR may be a debugger \"convenience\" variable (names starting\n\
with $), a register (a few standard names starting with $), or an actual\n\
variable in the program being debugged. EXP is any valid expression.\n\
Use \"set variable\" for variables with names identical to set subcommands.\n\
/* "call" is the same as "set", but handy for dbx users to call fns. */
c = add_com ("call", class_vars, call_command, _("\
Call a function in the program.\n\
+Usage: call EXP\n\
The argument is the function name and arguments, in the notation of the\n\
current working language. The result is printed and saved in the value\n\
history, if it is not void."));
- set_cmd_completer (c, expression_completer);
+ set_cmd_completer_handle_brkchars (c, print_command_completer);
add_cmd ("variable", class_vars, set_command, _("\
-Evaluate expression EXP and assign result to variable VAR, using assignment\n\
-syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
-example). VAR may be a debugger \"convenience\" variable (names starting\n\
+Evaluate expression EXP and assign result to variable VAR.\n\
+Usage: set variable VAR = EXP\n\
+This uses assignment syntax appropriate for the current language\n\
+(VAR = EXP or VAR := EXP for example).\n\
+VAR may be a debugger \"convenience\" variable (names starting\n\
with $), a register (a few standard names starting with $), or an actual\n\
variable in the program being debugged. EXP is any valid expression.\n\
This may usually be abbreviated to simply \"set\"."),
&setlist);
+ add_alias_cmd ("var", "variable", class_vars, 0, &setlist);
+
+ const auto print_opts = make_value_print_options_def_group (nullptr);
- c = add_com ("print", class_vars, print_command, _("\
+ static const std::string print_help = gdb::option::build_help (_("\
Print value of expression EXP.\n\
+Usage: print [[OPTION]... --] [/FMT] [EXP]\n\
+\n\
+Options:\n\
+%OPTIONS%\n\
+\n\
+Note: because this command accepts arbitrary expressions, if you\n\
+specify any command option, you must use a double dash (\"--\")\n\
+to mark the end of option processing. E.g.: \"print -o -- myobj\".\n\
+\n\
Variables accessible are those of the lexical environment of the selected\n\
stack frame, plus all those whose scope is global or an entire file.\n\
\n\
resides in memory.\n\
\n\
EXP may be preceded with /FMT, where FMT is a format letter\n\
-but no count or size letter (see \"x\" command)."));
- set_cmd_completer (c, expression_completer);
+but no count or size letter (see \"x\" command)."),
+ print_opts);
+
+ c = add_com ("print", class_vars, print_command, print_help.c_str ());
+ set_cmd_completer_handle_brkchars (c, print_command_completer);
add_com_alias ("p", "print", class_vars, 1);
add_com_alias ("inspect", "print", class_vars, 1);
add_setshow_uinteger_cmd ("max-symbolic-offset", no_class,
&max_symbolic_offset, _("\
-Set the largest offset that will be printed in <symbol+1234> form."), _("\
-Show the largest offset that will be printed in <symbol+1234> form."), _("\
+Set the largest offset that will be printed in <SYMBOL+1234> form."), _("\
+Show the largest offset that will be printed in <SYMBOL+1234> form."), _("\
Tell GDB to only display the symbolic form of an address if the\n\
offset between the closest earlier symbol and the address is less than\n\
the specified maximum offset. The default is \"unlimited\", which tells GDB\n\
&setprintlist, &showprintlist);
add_setshow_boolean_cmd ("symbol-filename", no_class,
&print_symbol_filename, _("\
-Set printing of source filename and line number with <symbol>."), _("\
-Show printing of source filename and line number with <symbol>."), NULL,
+Set printing of source filename and line number with <SYMBOL>."), _("\
+Show printing of source filename and line number with <SYMBOL>."), NULL,
NULL,
show_print_symbol_filename,
&setprintlist, &showprintlist);
add_com ("eval", no_class, eval_command, _("\
-Convert \"printf format string\", arg1, arg2, arg3, ..., argn to\n\
-a command line, and call it."));
+Construct a GDB command and then evaluate it.\n\
+Usage: eval \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\
+Convert the arguments to a string as \"printf\" would, but then\n\
+treat this string as a command line, and evaluate it."));
}
projects / deliverable / binutils-gdb.git / blobdiff