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Use address size prefix for loopw as for jcxz.

This commit is contained in:
Ian Lance Taylor 1997-08-26 16:33:34 +00:00
parent 051a96ff10
commit 625ea5db80
2 changed files with 8 additions and 2 deletions
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2
gas/ChangeLog
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@ -2,7 +2,7 @@ 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.
is jcxz or a loop instruction.
start-sanitize-v850
Mon Aug 25 16:04:14 1997 Nick Clifton <nickc@cygnus.com>

8
gas/config/tc-i386.c
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@ -1737,11 +1737,17 @@ md_assemble (line)
ADDR_PREFIX_OPCODE. This is a hack, but, then, so
is the instruction itself.
If an explicit suffix is used for the loop
instruction, that actually controls whether we use
cx vs. ecx. This is also controlled by
ADDR_PREFIX_OPCODE.
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))
if (IS_JUMP_ON_CX_ZERO (t->base_opcode)
|| IS_LOOP_ECX_TIMES (t->base_opcode))
FRAG_APPEND_1_CHAR (ADDR_PREFIX_OPCODE);
else
FRAG_APPEND_1_CHAR (WORD_PREFIX_OPCODE);