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Begin an Intel-specific instruction group.

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Add instructions representing Intel's division instructions which use a
numerator that is twice as wide as the denominator and produce both the
quotient and remainder.

Add encodings for the x86_[su]divmodx instructions.
This commit is contained in:
Jakob Stoklund Olesen
2017-07-18 10:09:02 -07:00
parent cf876e492a
commit c4db4c124b
8 changed files with 132 additions and 6 deletions
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9
lib/cretonne/meta/isa/intel/encodings.py
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@@ -8,6 +8,7 @@ from base.formats import UnaryImm
from .defs import I32, I64
from . import recipes as r
from . import settings as cfg
from . import instructions as x86
for inst, opc in [
(base.iadd, 0x01),
@@ -28,6 +29,14 @@ I64.enc(base.imul.i64, *r.rrx.rex(0x0f, 0xaf, w=1))
I64.enc(base.imul.i32, *r.rrx.rex(0x0f, 0xaf))
I64.enc(base.imul.i32, *r.rrx(0x0f, 0xaf))
for inst, rrr in [
(x86.sdivmodx, 7),
(x86.udivmodx, 6)]:
I32.enc(inst.i32, *r.div(0xf7, rrr=rrr))
I64.enc(inst.i64, *r.div.rex(0xf7, rrr=rrr, w=1))
I64.enc(inst.i32, *r.div.rex(0xf7, rrr=rrr))
I64.enc(inst.i32, *r.div(0xf7, rrr=rrr))
I32.enc(base.copy.i32, *r.umr(0x89))
I64.enc(base.copy.i64, *r.umr.rex(0x89, w=1))
I64.enc(base.copy.i32, *r.umr.rex(0x89))