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Add heap_load, heap_store, and heap_addr instructions.

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These are used when lowering WebAssembly sandbox code.
This commit is contained in:
Jakob Stoklund Olesen
2017-04-10 15:03:10 -07:00
parent e78e4ea4ec
commit b474485c0d
9 changed files with 110 additions and 46 deletions
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8
lib/cretonne/meta/base/formats.py
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@@ -8,7 +8,8 @@ in this module.
from __future__ import absolute_import
from cdsl.formats import InstructionFormat
from cdsl.operands import VALUE, VARIABLE_ARGS
from .immediates import imm64, uimm8, ieee32, ieee64, offset32, intcc, floatcc
from .immediates import imm64, uimm8, ieee32, ieee64, offset32, uoffset32
from .immediates import intcc, floatcc
from .entities import ebb, sig_ref, func_ref, jump_table, stack_slot
Nullary = InstructionFormat()
@@ -55,5 +56,10 @@ IndirectCall = InstructionFormat(
StackLoad = InstructionFormat(stack_slot, offset32)
StackStore = InstructionFormat(VALUE, stack_slot, offset32)
# Accessing a WebAssembly heap.
# TODO: Add a reference to a `heap` declared in the preamble.
HeapLoad = InstructionFormat(VALUE, uoffset32)
HeapStore = InstructionFormat(VALUE, VALUE, uoffset32)
# Finally extract the names of global variables in this module.
InstructionFormat.extract_names(globals())