On 7/11/19 5:26 AM, Richard Henderson wrote:
> On 7/10/19 8:21 PM, Jan Bobek wrote:
>> Doesn't B8 (without REX.W) work for x86_64, too? It zeroes the upper
>> part of the destination, so it's effectively zero-extending, and it's
>> one byte shorter than C7 (no ModR/M byte needed).
>
> Sorry, I sho
On 7/10/19 8:21 PM, Jan Bobek wrote:
> Doesn't B8 (without REX.W) work for x86_64, too? It zeroes the upper
> part of the destination, so it's effectively zero-extending, and it's
> one byte shorter than C7 (no ModR/M byte needed).
Sorry, I shouldn't have been quite so terse. What I meant is
i
On 7/3/19 12:11 PM, Richard Henderson wrote:
> On 7/1/19 6:35 AM, Jan Bobek wrote:
>> +sub write_mov_rr($$)
>> +{
>> +my ($r1, $r2) = @_;
>> +
>> +my %insn = (opcode => X86OP_MOV,
>> +modrm => {mod => MOD_DIRECT,
>> + reg => ($r1 & 0x7),
>> +
On 7/1/19 6:35 AM, Jan Bobek wrote:
> +sub write_mov_rr($$)
> +{
> +my ($r1, $r2) = @_;
> +
> +my %insn = (opcode => X86OP_MOV,
> +modrm => {mod => MOD_DIRECT,
> + reg => ($r1 & 0x7),
> + rm => ($r2 & 0x7)});
> +
> +$insn
The risugen_x86.pm module contains most of the code specific to Intel
i386 and x86_64 architectures. This commit also adds --x86_64 option,
which enables emission of 64-bit (rather than 32-bit) assembly.
Signed-off-by: Jan Bobek
---
risugen| 6 +-
risugen_x86.pm | 498 +
