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| author | Ian Lance Taylor <ian@airs.com> | 1997-08-26 16:25:03 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@airs.com> | 1997-08-26 16:25:03 +0000 |
| commit | 02bdbd8b5d07c4747b46e0f35698f431eca83abd (patch) | |
| tree | 3c44f42fa4dc55c2bc4a9f2e677b20321bf34684 | |
| parent | c2367582a07222fc86ed7b8cb3f0d0804e0bc279 (diff) | |
| download | gdb-02bdbd8b5d07c4747b46e0f35698f431eca83abd.zip gdb-02bdbd8b5d07c4747b46e0f35698f431eca83abd.tar.gz gdb-02bdbd8b5d07c4747b46e0f35698f431eca83abd.tar.bz2 | |
* 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.
| -rw-r--r-- | gas/ChangeLog | 8 | ||||
| -rw-r--r-- | gas/config/tc-i386.c | 20 |
2 files changed, 25 insertions, 3 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index b36bdde..7c0c9de 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -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 diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c index db88f6c..20a4f4e 100644 --- a/gas/config/tc-i386.c +++ b/gas/config/tc-i386.c @@ -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; } |