+2018-06-27 Simon Marchi <simon.marchi@ericsson.com>
+
+ * gdb-gdb.py: Move to...
+ * gdb-gdb.py.in: ... here.
+ * configure.ac (AC_CONFIG_FILES): Add gdb-gdb.py.
+ * Makefile.in (all): Add gdb-gdb.gdb and gdb-gdb.py as
+ dependencies.
+ (distclean): Remove gdb-gdb.py when cleaning.
+ (gdb-gdb.py, gdb-gdb.gdb): New rules.
+ * configure: Re-generate.
+
2018-06-27 Pedro Alves <palves@redhat.com>
* proc-service.c (get_ps_regcache): New.
# Flags needed to compile Python code
PYTHON_CFLAGS = @PYTHON_CFLAGS@
-all: gdb$(EXEEXT) $(CONFIG_ALL)
+all: gdb$(EXEEXT) $(CONFIG_ALL) gdb-gdb.py gdb-gdb.gdb
@$(MAKE) $(FLAGS_TO_PASS) DO=all "DODIRS=`echo $(SUBDIRS) | sed 's/testsuite//'`" subdir_do
# Rule for compiling .c files in the top-level gdb directory.
rm -f gdbserver/config.status gdbserver/config.log
rm -f gdbserver/tm.h gdbserver/xm.h gdbserver/nm.h
rm -f gdbserver/Makefile gdbserver/config.cache
- rm -f nm.h config.status config.h stamp-h gdb-gdb.gdb jit-reader.h
+ rm -f nm.h config.status config.h stamp-h b jit-reader.h
+ rm -f gdb-gdb.py gdb-gdb.gdb
rm -f y.output yacc.acts yacc.tmp y.tab.h
rm -f config.log config.cache
rm -f Makefile
gcore: $(srcdir)/gcore.in
$(SHELL) config.status $@
+gdb-gdb.py: $(srcdir)/gdb-gdb.py.in
+ $(SHELL) config.status $@
+
+gdb-gdb.gdb: $(srcdir)/gdb-gdb.gdb.in
+ $(SHELL) config.status $@
+
config.h: stamp-h ; @true
stamp-h: $(srcdir)/config.in config.status
CONFIG_HEADERS=config.h:config.in \
ac_config_files="$ac_config_files gcore"
-ac_config_files="$ac_config_files Makefile gdb-gdb.gdb doc/Makefile data-directory/Makefile"
+ac_config_files="$ac_config_files Makefile gdb-gdb.gdb gdb-gdb.py doc/Makefile data-directory/Makefile"
cat >confcache <<\_ACEOF
"gcore") CONFIG_FILES="$CONFIG_FILES gcore" ;;
"Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
"gdb-gdb.gdb") CONFIG_FILES="$CONFIG_FILES gdb-gdb.gdb" ;;
+ "gdb-gdb.py") CONFIG_FILES="$CONFIG_FILES gdb-gdb.py" ;;
"doc/Makefile") CONFIG_FILES="$CONFIG_FILES doc/Makefile" ;;
"data-directory/Makefile") CONFIG_FILES="$CONFIG_FILES data-directory/Makefile" ;;
case x$CONFIG_HEADERS in
xconfig.h:config.in)
echo > stamp-h ;;
+esac
+ ;;
+ "gdb-gdb.py":F)
+case x$CONFIG_HEADERS in
+xconfig.h:config.in)
+echo > stamp-h ;;
esac
;;
"doc/Makefile":F)
GDB_AC_TRANSFORM([gdb], [GDB_TRANSFORM_NAME])
GDB_AC_TRANSFORM([gcore], [GCORE_TRANSFORM_NAME])
AC_CONFIG_FILES([gcore], [chmod +x gcore])
-AC_CONFIG_FILES([Makefile gdb-gdb.gdb doc/Makefile data-directory/Makefile],
+AC_CONFIG_FILES([Makefile gdb-gdb.gdb gdb-gdb.py doc/Makefile data-directory/Makefile],
[
case x$CONFIG_HEADERS in
xconfig.h:config.in)
+++ /dev/null
-# Copyright (C) 2009-2018 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 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# 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, see <http://www.gnu.org/licenses/>.
-
-import gdb
-import os.path
-
-class TypeFlag:
- """A class that allows us to store a flag name, its short name,
- and its value.
-
- In the GDB sources, struct type has a component called instance_flags
- in which the value is the addition of various flags. These flags are
- defined by the enumerates type_instance_flag_value. This class helps us
- recreate a list with all these flags that is easy to manipulate and sort.
- Because all flag names start with TYPE_INSTANCE_FLAG_, a short_name
- attribute is provided that strips this prefix.
-
- ATTRIBUTES
- name: The enumeration name (eg: "TYPE_INSTANCE_FLAG_CONST").
- value: The associated value.
- short_name: The enumeration name, with the suffix stripped.
- """
- def __init__(self, name, value):
- self.name = name
- self.value = value
- self.short_name = name.replace("TYPE_INSTANCE_FLAG_", '')
- def __cmp__(self, other):
- """Sort by value order."""
- return self.value.__cmp__(other.value)
-
-# A list of all existing TYPE_INSTANCE_FLAGS_* enumerations,
-# stored as TypeFlags objects. Lazy-initialized.
-TYPE_FLAGS = None
-
-class TypeFlagsPrinter:
- """A class that prints a decoded form of an instance_flags value.
-
- This class uses a global named TYPE_FLAGS, which is a list of
- all defined TypeFlag values. Using a global allows us to compute
- this list only once.
-
- This class relies on a couple of enumeration types being defined.
- If not, then printing of the instance_flag is going to be degraded,
- but it's not a fatal error.
- """
- def __init__(self, val):
- self.val = val
- def __str__(self):
- global TYPE_FLAGS
- if TYPE_FLAGS is None:
- self.init_TYPE_FLAGS()
- if not self.val:
- return "0"
- if TYPE_FLAGS:
- flag_list = [flag.short_name for flag in TYPE_FLAGS
- if self.val & flag.value]
- else:
- flag_list = ["???"]
- return "0x%x [%s]" % (self.val, "|".join(flag_list))
- def init_TYPE_FLAGS(self):
- """Initialize the TYPE_FLAGS global as a list of TypeFlag objects.
- This operation requires the search of a couple of enumeration types.
- If not found, a warning is printed on stdout, and TYPE_FLAGS is
- set to the empty list.
-
- The resulting list is sorted by increasing value, to facilitate
- printing of the list of flags used in an instance_flags value.
- """
- global TYPE_FLAGS
- TYPE_FLAGS = []
- try:
- iflags = gdb.lookup_type("enum type_instance_flag_value")
- except:
- print("Warning: Cannot find enum type_instance_flag_value type.")
- print(" `struct type' pretty-printer will be degraded")
- return
- TYPE_FLAGS = [TypeFlag(field.name, field.enumval)
- for field in iflags.fields()]
- TYPE_FLAGS.sort()
-
-class StructTypePrettyPrinter:
- """Pretty-print an object of type struct type"""
- def __init__(self, val):
- self.val = val
- def to_string(self):
- fields = []
- fields.append("pointer_type = %s" % self.val['pointer_type'])
- fields.append("reference_type = %s" % self.val['reference_type'])
- fields.append("chain = %s" % self.val['reference_type'])
- fields.append("instance_flags = %s"
- % TypeFlagsPrinter(self.val['instance_flags']))
- fields.append("length = %d" % self.val['length'])
- fields.append("main_type = %s" % self.val['main_type'])
- return "\n{" + ",\n ".join(fields) + "}"
-
-class StructMainTypePrettyPrinter:
- """Pretty-print an objet of type main_type"""
- def __init__(self, val):
- self.val = val
- def flags_to_string(self):
- """struct main_type contains a series of components that
- are one-bit ints whose name start with "flag_". For instance:
- flag_unsigned, flag_stub, etc. In essence, these components are
- really boolean flags, and this method prints a short synthetic
- version of the value of all these flags. For instance, if
- flag_unsigned and flag_static are the only components set to 1,
- this function will return "unsigned|static".
- """
- fields = [field.name.replace("flag_", "")
- for field in self.val.type.fields()
- if field.name.startswith("flag_")
- and self.val[field.name]]
- return "|".join(fields)
- def owner_to_string(self):
- """Return an image of component "owner".
- """
- if self.val['flag_objfile_owned'] != 0:
- return "%s (objfile)" % self.val['owner']['objfile']
- else:
- return "%s (gdbarch)" % self.val['owner']['gdbarch']
- def struct_field_location_img(self, field_val):
- """Return an image of the loc component inside the given field
- gdb.Value.
- """
- loc_val = field_val['loc']
- loc_kind = str(field_val['loc_kind'])
- if loc_kind == "FIELD_LOC_KIND_BITPOS":
- return 'bitpos = %d' % loc_val['bitpos']
- elif loc_kind == "FIELD_LOC_KIND_ENUMVAL":
- return 'enumval = %d' % loc_val['enumval']
- elif loc_kind == "FIELD_LOC_KIND_PHYSADDR":
- return 'physaddr = 0x%x' % loc_val['physaddr']
- elif loc_kind == "FIELD_LOC_KIND_PHYSNAME":
- return 'physname = %s' % loc_val['physname']
- elif loc_kind == "FIELD_LOC_KIND_DWARF_BLOCK":
- return 'dwarf_block = %s' % loc_val['dwarf_block']
- else:
- return 'loc = ??? (unsupported loc_kind value)'
- def struct_field_img(self, fieldno):
- """Return an image of the main_type field number FIELDNO.
- """
- f = self.val['flds_bnds']['fields'][fieldno]
- label = "flds_bnds.fields[%d]:" % fieldno
- if f['artificial']:
- label += " (artificial)"
- fields = []
- fields.append("name = %s" % f['name'])
- fields.append("type = %s" % f['type'])
- fields.append("loc_kind = %s" % f['loc_kind'])
- fields.append("bitsize = %d" % f['bitsize'])
- fields.append(self.struct_field_location_img(f))
- return label + "\n" + " {" + ",\n ".join(fields) + "}"
- def bounds_img(self):
- """Return an image of the main_type bounds.
- """
- b = self.val['flds_bnds']['bounds'].dereference()
- low = str(b['low'])
- if b['low_undefined'] != 0:
- low += " (undefined)"
- high = str(b['high'])
- if b['high_undefined'] != 0:
- high += " (undefined)"
- return "flds_bnds.bounds = {%s, %s}" % (low, high)
- def type_specific_img(self):
- """Return a string image of the main_type type_specific union.
- Only the relevant component of that union is printed (based on
- the value of the type_specific_kind field.
- """
- type_specific_kind = str(self.val['type_specific_field'])
- type_specific = self.val['type_specific']
- if type_specific_kind == "TYPE_SPECIFIC_NONE":
- img = 'type_specific_field = %s' % type_specific_kind
- elif type_specific_kind == "TYPE_SPECIFIC_CPLUS_STUFF":
- img = "cplus_stuff = %s" % type_specific['cplus_stuff']
- elif type_specific_kind == "TYPE_SPECIFIC_GNAT_STUFF":
- img = ("gnat_stuff = {descriptive_type = %s}"
- % type_specific['gnat_stuff']['descriptive_type'])
- elif type_specific_kind == "TYPE_SPECIFIC_FLOATFORMAT":
- img = "floatformat[0..1] = %s" % type_specific['floatformat']
- elif type_specific_kind == "TYPE_SPECIFIC_FUNC":
- img = ("calling_convention = %d"
- % type_specific['func_stuff']['calling_convention'])
- # tail_call_list is not printed.
- elif type_specific_kind == "TYPE_SPECIFIC_SELF_TYPE":
- img = "self_type = %s" % type_specific['self_type']
- else:
- img = ("type_specific = ??? (unknown type_secific_kind: %s)"
- % type_specific_kind)
- return img
-
- def to_string(self):
- """Return a pretty-printed image of our main_type.
- """
- fields = []
- fields.append("name = %s" % self.val['name'])
- fields.append("tag_name = %s" % self.val['tag_name'])
- fields.append("code = %s" % self.val['code'])
- fields.append("flags = [%s]" % self.flags_to_string())
- fields.append("owner = %s" % self.owner_to_string())
- fields.append("target_type = %s" % self.val['target_type'])
- if self.val['nfields'] > 0:
- for fieldno in range(self.val['nfields']):
- fields.append(self.struct_field_img(fieldno))
- if self.val['code'] == gdb.TYPE_CODE_RANGE:
- fields.append(self.bounds_img())
- fields.append(self.type_specific_img())
-
- return "\n{" + ",\n ".join(fields) + "}"
-
-def type_lookup_function(val):
- """A routine that returns the correct pretty printer for VAL
- if appropriate. Returns None otherwise.
- """
- if val.type.tag == "type":
- return StructTypePrettyPrinter(val)
- elif val.type.tag == "main_type":
- return StructMainTypePrettyPrinter(val)
- return None
-
-def register_pretty_printer(objfile):
- """A routine to register a pretty-printer against the given OBJFILE.
- """
- objfile.pretty_printers.append(type_lookup_function)
-
-if __name__ == "__main__":
- if gdb.current_objfile() is not None:
- # This is the case where this script is being "auto-loaded"
- # for a given objfile. Register the pretty-printer for that
- # objfile.
- register_pretty_printer(gdb.current_objfile())
- else:
- # We need to locate the objfile corresponding to the GDB
- # executable, and register the pretty-printer for that objfile.
- # FIXME: The condition used to match the objfile is too simplistic
- # and will not work on Windows.
- for objfile in gdb.objfiles():
- if os.path.basename(objfile.filename) == "gdb":
- objfile.pretty_printers.append(type_lookup_function)
--- /dev/null
+# Copyright (C) 2009-2018 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 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# 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, see <http://www.gnu.org/licenses/>.
+
+import gdb
+import os.path
+
+class TypeFlag:
+ """A class that allows us to store a flag name, its short name,
+ and its value.
+
+ In the GDB sources, struct type has a component called instance_flags
+ in which the value is the addition of various flags. These flags are
+ defined by the enumerates type_instance_flag_value. This class helps us
+ recreate a list with all these flags that is easy to manipulate and sort.
+ Because all flag names start with TYPE_INSTANCE_FLAG_, a short_name
+ attribute is provided that strips this prefix.
+
+ ATTRIBUTES
+ name: The enumeration name (eg: "TYPE_INSTANCE_FLAG_CONST").
+ value: The associated value.
+ short_name: The enumeration name, with the suffix stripped.
+ """
+ def __init__(self, name, value):
+ self.name = name
+ self.value = value
+ self.short_name = name.replace("TYPE_INSTANCE_FLAG_", '')
+ def __cmp__(self, other):
+ """Sort by value order."""
+ return self.value.__cmp__(other.value)
+
+# A list of all existing TYPE_INSTANCE_FLAGS_* enumerations,
+# stored as TypeFlags objects. Lazy-initialized.
+TYPE_FLAGS = None
+
+class TypeFlagsPrinter:
+ """A class that prints a decoded form of an instance_flags value.
+
+ This class uses a global named TYPE_FLAGS, which is a list of
+ all defined TypeFlag values. Using a global allows us to compute
+ this list only once.
+
+ This class relies on a couple of enumeration types being defined.
+ If not, then printing of the instance_flag is going to be degraded,
+ but it's not a fatal error.
+ """
+ def __init__(self, val):
+ self.val = val
+ def __str__(self):
+ global TYPE_FLAGS
+ if TYPE_FLAGS is None:
+ self.init_TYPE_FLAGS()
+ if not self.val:
+ return "0"
+ if TYPE_FLAGS:
+ flag_list = [flag.short_name for flag in TYPE_FLAGS
+ if self.val & flag.value]
+ else:
+ flag_list = ["???"]
+ return "0x%x [%s]" % (self.val, "|".join(flag_list))
+ def init_TYPE_FLAGS(self):
+ """Initialize the TYPE_FLAGS global as a list of TypeFlag objects.
+ This operation requires the search of a couple of enumeration types.
+ If not found, a warning is printed on stdout, and TYPE_FLAGS is
+ set to the empty list.
+
+ The resulting list is sorted by increasing value, to facilitate
+ printing of the list of flags used in an instance_flags value.
+ """
+ global TYPE_FLAGS
+ TYPE_FLAGS = []
+ try:
+ iflags = gdb.lookup_type("enum type_instance_flag_value")
+ except:
+ print("Warning: Cannot find enum type_instance_flag_value type.")
+ print(" `struct type' pretty-printer will be degraded")
+ return
+ TYPE_FLAGS = [TypeFlag(field.name, field.enumval)
+ for field in iflags.fields()]
+ TYPE_FLAGS.sort()
+
+class StructTypePrettyPrinter:
+ """Pretty-print an object of type struct type"""
+ def __init__(self, val):
+ self.val = val
+ def to_string(self):
+ fields = []
+ fields.append("pointer_type = %s" % self.val['pointer_type'])
+ fields.append("reference_type = %s" % self.val['reference_type'])
+ fields.append("chain = %s" % self.val['reference_type'])
+ fields.append("instance_flags = %s"
+ % TypeFlagsPrinter(self.val['instance_flags']))
+ fields.append("length = %d" % self.val['length'])
+ fields.append("main_type = %s" % self.val['main_type'])
+ return "\n{" + ",\n ".join(fields) + "}"
+
+class StructMainTypePrettyPrinter:
+ """Pretty-print an objet of type main_type"""
+ def __init__(self, val):
+ self.val = val
+ def flags_to_string(self):
+ """struct main_type contains a series of components that
+ are one-bit ints whose name start with "flag_". For instance:
+ flag_unsigned, flag_stub, etc. In essence, these components are
+ really boolean flags, and this method prints a short synthetic
+ version of the value of all these flags. For instance, if
+ flag_unsigned and flag_static are the only components set to 1,
+ this function will return "unsigned|static".
+ """
+ fields = [field.name.replace("flag_", "")
+ for field in self.val.type.fields()
+ if field.name.startswith("flag_")
+ and self.val[field.name]]
+ return "|".join(fields)
+ def owner_to_string(self):
+ """Return an image of component "owner".
+ """
+ if self.val['flag_objfile_owned'] != 0:
+ return "%s (objfile)" % self.val['owner']['objfile']
+ else:
+ return "%s (gdbarch)" % self.val['owner']['gdbarch']
+ def struct_field_location_img(self, field_val):
+ """Return an image of the loc component inside the given field
+ gdb.Value.
+ """
+ loc_val = field_val['loc']
+ loc_kind = str(field_val['loc_kind'])
+ if loc_kind == "FIELD_LOC_KIND_BITPOS":
+ return 'bitpos = %d' % loc_val['bitpos']
+ elif loc_kind == "FIELD_LOC_KIND_ENUMVAL":
+ return 'enumval = %d' % loc_val['enumval']
+ elif loc_kind == "FIELD_LOC_KIND_PHYSADDR":
+ return 'physaddr = 0x%x' % loc_val['physaddr']
+ elif loc_kind == "FIELD_LOC_KIND_PHYSNAME":
+ return 'physname = %s' % loc_val['physname']
+ elif loc_kind == "FIELD_LOC_KIND_DWARF_BLOCK":
+ return 'dwarf_block = %s' % loc_val['dwarf_block']
+ else:
+ return 'loc = ??? (unsupported loc_kind value)'
+ def struct_field_img(self, fieldno):
+ """Return an image of the main_type field number FIELDNO.
+ """
+ f = self.val['flds_bnds']['fields'][fieldno]
+ label = "flds_bnds.fields[%d]:" % fieldno
+ if f['artificial']:
+ label += " (artificial)"
+ fields = []
+ fields.append("name = %s" % f['name'])
+ fields.append("type = %s" % f['type'])
+ fields.append("loc_kind = %s" % f['loc_kind'])
+ fields.append("bitsize = %d" % f['bitsize'])
+ fields.append(self.struct_field_location_img(f))
+ return label + "\n" + " {" + ",\n ".join(fields) + "}"
+ def bounds_img(self):
+ """Return an image of the main_type bounds.
+ """
+ b = self.val['flds_bnds']['bounds'].dereference()
+ low = str(b['low'])
+ if b['low_undefined'] != 0:
+ low += " (undefined)"
+ high = str(b['high'])
+ if b['high_undefined'] != 0:
+ high += " (undefined)"
+ return "flds_bnds.bounds = {%s, %s}" % (low, high)
+ def type_specific_img(self):
+ """Return a string image of the main_type type_specific union.
+ Only the relevant component of that union is printed (based on
+ the value of the type_specific_kind field.
+ """
+ type_specific_kind = str(self.val['type_specific_field'])
+ type_specific = self.val['type_specific']
+ if type_specific_kind == "TYPE_SPECIFIC_NONE":
+ img = 'type_specific_field = %s' % type_specific_kind
+ elif type_specific_kind == "TYPE_SPECIFIC_CPLUS_STUFF":
+ img = "cplus_stuff = %s" % type_specific['cplus_stuff']
+ elif type_specific_kind == "TYPE_SPECIFIC_GNAT_STUFF":
+ img = ("gnat_stuff = {descriptive_type = %s}"
+ % type_specific['gnat_stuff']['descriptive_type'])
+ elif type_specific_kind == "TYPE_SPECIFIC_FLOATFORMAT":
+ img = "floatformat[0..1] = %s" % type_specific['floatformat']
+ elif type_specific_kind == "TYPE_SPECIFIC_FUNC":
+ img = ("calling_convention = %d"
+ % type_specific['func_stuff']['calling_convention'])
+ # tail_call_list is not printed.
+ elif type_specific_kind == "TYPE_SPECIFIC_SELF_TYPE":
+ img = "self_type = %s" % type_specific['self_type']
+ else:
+ img = ("type_specific = ??? (unknown type_secific_kind: %s)"
+ % type_specific_kind)
+ return img
+
+ def to_string(self):
+ """Return a pretty-printed image of our main_type.
+ """
+ fields = []
+ fields.append("name = %s" % self.val['name'])
+ fields.append("tag_name = %s" % self.val['tag_name'])
+ fields.append("code = %s" % self.val['code'])
+ fields.append("flags = [%s]" % self.flags_to_string())
+ fields.append("owner = %s" % self.owner_to_string())
+ fields.append("target_type = %s" % self.val['target_type'])
+ if self.val['nfields'] > 0:
+ for fieldno in range(self.val['nfields']):
+ fields.append(self.struct_field_img(fieldno))
+ if self.val['code'] == gdb.TYPE_CODE_RANGE:
+ fields.append(self.bounds_img())
+ fields.append(self.type_specific_img())
+
+ return "\n{" + ",\n ".join(fields) + "}"
+
+def type_lookup_function(val):
+ """A routine that returns the correct pretty printer for VAL
+ if appropriate. Returns None otherwise.
+ """
+ if val.type.tag == "type":
+ return StructTypePrettyPrinter(val)
+ elif val.type.tag == "main_type":
+ return StructMainTypePrettyPrinter(val)
+ return None
+
+def register_pretty_printer(objfile):
+ """A routine to register a pretty-printer against the given OBJFILE.
+ """
+ objfile.pretty_printers.append(type_lookup_function)
+
+if __name__ == "__main__":
+ if gdb.current_objfile() is not None:
+ # This is the case where this script is being "auto-loaded"
+ # for a given objfile. Register the pretty-printer for that
+ # objfile.
+ register_pretty_printer(gdb.current_objfile())
+ else:
+ # We need to locate the objfile corresponding to the GDB
+ # executable, and register the pretty-printer for that objfile.
+ # FIXME: The condition used to match the objfile is too simplistic
+ # and will not work on Windows.
+ for objfile in gdb.objfiles():
+ if os.path.basename(objfile.filename) == "gdb":
+ objfile.pretty_printers.append(type_lookup_function)
projects / binutils-gdb.git / commitdiff