diff options
| author | Jan Beulich <jbeulich@novell.com> | 2017-11-30 11:48:13 +0100 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2017-11-30 11:48:13 +0100 |
| commit | 7ac20022477c163983de77e5b16c016d518ca7bc (patch) | |
| tree | a8aaf1aa967b6f7892353eb67cf2029e46622d92 /opcodes/ChangeLog | |
| parent | b5014f7af26ff0fbc1128b5fabdaf3bd5918dd94 (diff) | |
x86: derive DispN from BaseIndex
BaseIndex implies - with the exception of string instructions the
optional presence of a displacement. This is almost completely uniform
for all instructions (the sole exception being MPX ones, which don't
allow 16-bit addressing and hence Disp16), so there's no point in
explicitly stating this in the main opcode table. Drop those explict
specifications in favor of adding logic to i386-gen, shrinking the
table size quite a bit and hence making it more readable.
The opcodes/i386-tbl.h changes are due to a few cases where pointless
Disp* still hadn't been removed from their insns.
Diffstat (limited to 'opcodes/ChangeLog')
| -rw-r--r-- | opcodes/ChangeLog | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog index 718c485e48..7c4c2b2c32 100644 --- a/opcodes/ChangeLog +++ b/opcodes/ChangeLog @@ -1,5 +1,22 @@ 2017-11-29 Jan Beulich <jbeulich@suse.com> + * i386-gen.c (active_cpu_flags, active_isstring, enum stage): + New. + (output_cpu_flags): Update active_cpu_flags. + (process_i386_opcode_modifier): Update active_isstring. + (output_operand_type): Rename "macro" parameter to "stage", + changing its type. + (process_i386_operand_type): Likewise. Track presence of + BaseIndex and emit DispN accordingly. + (output_i386_opcode, process_i386_registers, + process_i386_initializers): Adjust calls to + process_i386_operand_type() for its changed parameter type. + * i386-opc.tbl: Drop Disp8, Disp16, Disp32, and Disp32S from + all insns operands having BaseIndex set. + * i386-tbl.h: Re-generate. + +2017-11-29 Jan Beulich <jbeulich@suse.com> + * i386-gen.c (operand_type_init): Remove OPERAND_TYPE_VEC_DISP8 entry. (operand_types): Remove Vec_Disp8 entry. |