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Implement stack_addr, stack_load, stack_store for x86-64. (#370)

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This commit is contained in:
Dan Gohman
2018-06-26 06:15:21 -07:00
committed by GitHub
parent fbd637e142
commit 7d2b44289c
6 changed files with 179 additions and 1 deletions
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31
lib/codegen/meta/isa/x86/recipes.py
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@@ -17,6 +17,7 @@ from base.formats import Jump, Branch, BranchInt, BranchFloat
from base.formats import Ternary, FuncAddr, UnaryGlobalValue
from base.formats import RegMove, RegSpill, RegFill, CopySpecial
from base.formats import LoadComplex, StoreComplex
from base.formats import StackLoad
from .registers import GPR, ABCD, FPR, GPR_DEREF_SAFE, GPR_ZERO_DEREF_SAFE
from .registers import GPR8, FPR8, GPR8_DEREF_SAFE, GPR8_ZERO_DEREF_SAFE, FLAG
from .registers import StackGPR32, StackFPR32
@@ -751,6 +752,36 @@ got_gvaddr8 = TailRecipe(
sink.put4(0);
''')
#
# Stack addresses.
#
# TODO: Alternative forms for 8-bit immediates, when applicable.
#
spaddr4_id = TailRecipe(
'spaddr4_id', StackLoad, size=6, ins=(), outs=GPR,
emit='''
let sp = StackRef::sp(stack_slot, &func.stack_slots);
let base = stk_base(sp.base);
PUT_OP(bits, rex2(out_reg0, base), sink);
modrm_sib_disp8(out_reg0, sink);
sib_noindex(base, sink);
let imm : i32 = offset.into();
sink.put4(sp.offset.checked_add(imm).unwrap() as u32);
''')
spaddr8_id = TailRecipe(
'spaddr8_id', StackLoad, size=6, ins=(), outs=GPR,
emit='''
let sp = StackRef::sp(stack_slot, &func.stack_slots);
let base = stk_base(sp.base);
PUT_OP(bits, rex2(base, out_reg0), sink);
modrm_sib_disp32(out_reg0, sink);
sib_noindex(base, sink);
let imm : i32 = offset.into();
sink.put4(sp.offset.checked_add(imm).unwrap() as u32);
''')
#
# Store recipes.