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* config/tc-i386.c (md_assemble): In JumpByte case, when looking 

for a WORD_PREFIX_OPCODE, change it to ADDR_PREFIX_OPCODE if this
	is jcxz.
This commit is contained in:
Ian Lance Taylor 1997-08-26 16:25:03 +00:00
parent c2367582a0
commit 02bdbd8b5d
2 changed files with 25 additions and 3 deletions
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8
gas/ChangeLog
View File

@ -1,11 +1,17 @@
Tue Aug 26 12:23:25 1997 Ian Lance Taylor <ian@cygnus.com>
* config/tc-i386.c (md_assemble): In JumpByte case, when looking
for a WORD_PREFIX_OPCODE, change it to ADDR_PREFIX_OPCODE if this
is jcxz.
start-sanitize-v850
Mon Aug 25 16:04:14 1997 Nick Clifton <nickc@cygnus.com>
* config/tc-v850.c (pre_defined_registers): Add 'hp' as alias for
r2.
(md_begin): Set up machine architecture and type.
end-sanitize-v850
end-sanitize-v850
Mon Aug 25 14:25:48 1997 Ian Lance Taylor <ian@cygnus.com>
* symbols.c (resolve_symbol_value): Store the value back into the

20
gas/config/tc-i386.c
View File

@ -433,7 +433,7 @@ const pseudo_typeS md_pseudo_table[] =
#ifndef I386COFF
{"bss", s_bss, 0},
#endif
#ifndef OBJ_AOUT
#if !defined(OBJ_AOUT) && !defined(USE_ALIGN_PTWO)
{"align", s_align_bytes, 0},
#else
{"align", s_align_ptwo, 0},
@ -1728,7 +1728,23 @@ md_assemble (line)
{
if (*q == WORD_PREFIX_OPCODE)
{
FRAG_APPEND_1_CHAR (WORD_PREFIX_OPCODE);
/* The jcxz/jecxz instructions are marked with Data16
and Data32, which means that they may get
WORD_PREFIX_OPCODE added to the list of prefixes.
However, the are correctly distinguished using
ADDR_PREFIX_OPCODE. Here we look for
WORD_PREFIX_OPCODE, and actually emit
ADDR_PREFIX_OPCODE. This is a hack, but, then, so
is the instruction itself.
I don't know if there is any valid case in which we
want to emit WORD_PREFIX_OPCODE, but I am keeping
the old behaviour for safety. */
if (IS_JUMP_ON_CX_ZERO (t->base_opcode))
FRAG_APPEND_1_CHAR (ADDR_PREFIX_OPCODE);
else
FRAG_APPEND_1_CHAR (WORD_PREFIX_OPCODE);
insn_size += 1;
break;
}