Mon Jun 8 12:20:30 1998 Alan Modra <alan@spri.levels.unisa.edu.au>

Mon Jun  8 12:20:30 1998  Alan Modra  <alan@spri.levels.unisa.edu.au>

	* config/tc-i386.c: REPNE renamed to REPNE_PREFIX_OPCODE, and
	likewise for REPE.

	* config/tc-i386.c (reloc): Add braces.

	* config/tc-i386.c (struct _i386_insn): Rename bi to sib to be
	consistent with Intel naming.
	* config/tc-i386.h (base_index_byte): Rename to sib_byte.  Don't
	use bitfields in sib_byte.
	(modrm_byte): Don't use bitfields here either.

	* config/tc-i386.c (current_templates): Add const.
	(parse_register): Add const to return, param, and char *s.
	(i386_operand): Add const to reg_entry *r.
	* config/tc-i386.h (templates): Add const to start, end.

	Inspired by code for 16 bit gas support from Martynas Kunigelis
	<martynas@nm3.ktu.lt>:
	* config/tc-i386.c (md_assemble): Add full support for 16 bit
	modrm, and Jump, JumpByte, JumpDword, JumpInterSegment insns.
	(uses_mem_addrmode): Remove.
	(md_estimate_size_before_relax): Add support here too.
	(md_relax_table): Rewrite interface to md_relax for 16 bit
	support.
	(BYTE, WORD, DWORD, UNKNOWN_SIZE): Remove.
	(opcode_suffix_to_type): Remove.
	(CODE16, SMALL, SMALL16, BIG, BIG16): Define.
	(SIZE_FROM_RELAX_STATE): Modify to suit above.
	(md_convert_frag): Likewise.
	(i386_operand): Add support for 16 bit base/index regs,
	immediates, and displacements.  Remove some unnecessary casts, and
	localise end_of_operand_string, displacement_string_start,
	displacement_string_end variables.  Add GCC_ASM_O_HACK.
	* config/tc-i386.h (NO_BASE_REGISTER_16): Define.

	* config/tc-i386.c (prefix_hash): Remove.
	(md_begin): Rewrite without obstacks.  Remove prefix hash table
	handling.  Rewrite lexical table handling.
	(i386_print_statistics): Don't print prefix statistics.
	(md_assemble): Rewrite instruction parser so that line is not
	converted to lower case.  Don't do a hash_find for prefixes,
	instead recognise them via opcode modifier.
	(expecting_operand, paren_not_balanced): Localise variables.
	* config/tc-i386.h (IsPrefix): Define.
	(prefix_entry): Remove.

	* config/tc-i386.h (PREFIX_SEPERATOR): Don't define.
	* config/tc-i386.c (PREFIX_SEPARATOR): Define here instead, using
	'\\' in case where comment_chars contains '/'.

	* config/tc-i386.c (MATCH): Ensure given operand and template
	match for JumpAbsolute.  Makes e.g. `ljmp table(%ebx)' invalid;
	you must write `ljmp *table(%ebx)'.

	From H.J. Lu <hjl@gnu.org>:
	* config/tc-i386.c (BFD_RELOC_16, BFD_RELOC_16_PCREL): Define
	as 0 ifndef BFD_ASSEMBLER.
	(md_assemble): Allow immediate operands without suffix or
	other reg operand to default in size to the current code size.