* builtin-attrs.def (ATTR_ASM_FPRINTF): New.
* c-format.c (enum format_type): Add asm_fprintf_format_type.
(NOARGUMENTS, asm_fprintf_length_specs, asm_fprintf_flag_specs,
asm_fprintf_flag_pairs, asm_fprintf_char_table): New.
(format_types_orig): Renamed from format_types. Add new data.
(format_types): Declare as pointer.
(handle_format_attribute): Move later in file so we have all
necessary declarations. Add section to capture HOST_WIDE_INT.
* output.h (ATTRIBUTE_ASM_FPRINTF, __gcc_host_wide_int__): New.
(asm_fprintf): Mark with ATTRIBUTE_ASM_FPRINTF.