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WebAssembly64.asm
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1370 lines (1173 loc) · 35.8 KB
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# Copyright (C) 2011-2023 Apple Inc. All rights reserved.
# Copyright (C) 2021 Igalia S.L. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
# THE POSSIBILITY OF SUCH DAMAGE.
# Opcodes that should eventually be shared with JS llint
wasmOp(mov, WasmMov, macro(ctx)
mloadq(ctx, m_src, t0)
returnq(ctx, t0)
end)
# Wasm specific bytecodes
macro emitCheckAndPreparePointer(ctx, pointer, offset, size)
leap size - 1[pointer, offset], t5
bpb t5, boundsCheckingSize, .continuation
throwException(OutOfBoundsMemoryAccess)
.continuation:
addp memoryBase, pointer
end
macro emitCheckAndPreparePointerAddingOffset(ctx, pointer, offset, size)
leap size - 1[pointer, offset], t5
bpb t5, boundsCheckingSize, .continuation
.throw:
throwException(OutOfBoundsMemoryAccess)
.continuation:
addp memoryBase, pointer
addp offset, pointer
end
macro emitCheckAndPreparePointerAddingOffsetWithAlignmentCheck(ctx, pointer, offset, size)
leap size - 1[pointer, offset], t5
bpb t5, boundsCheckingSize, .continuation
.throw:
throwException(OutOfBoundsMemoryAccess)
.continuation:
addp memoryBase, pointer
addp offset, pointer
btpnz pointer, (size - 1), .throw
end
macro wasmLoadOp(name, struct, size, fn)
wasmOp(name, struct, macro(ctx)
mloadi(ctx, m_pointer, t0)
wgetu(ctx, m_offset, t1)
emitCheckAndPreparePointer(ctx, t0, t1, size)
fn([t0, t1], t2)
returnq(ctx, t2)
end)
end
wasmLoadOp(load8_u, WasmLoad8U, 1, macro(mem, dst) loadb mem, dst end)
wasmLoadOp(load16_u, WasmLoad16U, 2, macro(mem, dst) loadh mem, dst end)
wasmLoadOp(load32_u, WasmLoad32U, 4, macro(mem, dst) loadi mem, dst end)
wasmLoadOp(load64_u, WasmLoad64U, 8, macro(mem, dst) loadq mem, dst end)
wasmLoadOp(i32_load8_s, WasmI32Load8S, 1, macro(mem, dst) loadbsi mem, dst end)
wasmLoadOp(i64_load8_s, WasmI64Load8S, 1, macro(mem, dst) loadbsq mem, dst end)
wasmLoadOp(i32_load16_s, WasmI32Load16S, 2, macro(mem, dst) loadhsi mem, dst end)
wasmLoadOp(i64_load16_s, WasmI64Load16S, 2, macro(mem, dst) loadhsq mem, dst end)
wasmLoadOp(i64_load32_s, WasmI64Load32S, 4, macro(mem, dst) loadis mem, dst end)
macro wasmStoreOp(name, struct, size, fn)
wasmOp(name, struct, macro(ctx)
mloadi(ctx, m_pointer, t0)
wgetu(ctx, m_offset, t1)
emitCheckAndPreparePointer(ctx, t0, t1, size)
mloadq(ctx, m_value, t2)
fn(t2, [t0, t1])
dispatch(ctx)
end)
end
wasmStoreOp(store8, WasmStore8, 1, macro(value, mem) storeb value, mem end)
wasmStoreOp(store16, WasmStore16, 2, macro(value, mem) storeh value, mem end)
wasmStoreOp(store32, WasmStore32, 4, macro(value, mem) storei value, mem end)
wasmStoreOp(store64, WasmStore64, 8, macro(value, mem) storeq value, mem end)
wasmOp(ref_is_null, WasmRefIsNull, macro(ctx)
mloadp(ctx, m_ref, t0)
cqeq t0, ValueNull, t0
returni(ctx, t0)
end)
wasmOp(ref_as_non_null, WasmRefAsNonNull, macro(ctx)
mloadp(ctx, m_ref, t0)
bqeq t0, ValueNull, .nullRef
returnq(ctx, t0)
.nullRef:
throwException(NullRefAsNonNull)
end)
wasmOp(get_global, WasmGetGlobal, macro(ctx)
loadp Wasm::Instance::m_globals[wasmInstance], t0
wgetu(ctx, m_globalIndex, t1)
lshiftp 1, t1
loadq [t0, t1, 8], t0
returnq(ctx, t0)
end)
wasmOp(set_global, WasmSetGlobal, macro(ctx)
loadp Wasm::Instance::m_globals[wasmInstance], t0
wgetu(ctx, m_globalIndex, t1)
lshiftp 1, t1
mloadq(ctx, m_value, t2)
storeq t2, [t0, t1, 8]
dispatch(ctx)
end)
wasmOp(get_global_portable_binding, WasmGetGlobalPortableBinding, macro(ctx)
loadp Wasm::Instance::m_globals[wasmInstance], t0
wgetu(ctx, m_globalIndex, t1)
lshiftp 1, t1
loadq [t0, t1, 8], t0
loadq [t0], t0
returnq(ctx, t0)
end)
wasmOp(set_global_portable_binding, WasmSetGlobalPortableBinding, macro(ctx)
loadp Wasm::Instance::m_globals[wasmInstance], t0
wgetu(ctx, m_globalIndex, t1)
lshiftp 1, t1
mloadq(ctx, m_value, t2)
loadq [t0, t1, 8], t0
storeq t2, [t0]
dispatch(ctx)
end)
# Opcodes that don't have the `b3op` entry in wasm.json. This should be kept in sync
# i32 binary ops
wasmOp(i32_div_s, WasmI32DivS, macro (ctx)
const dividend = t0
if X86_64_WIN
const divisor = t2
else
const divisor = t1
end
mloadi(ctx, m_lhs, dividend)
mloadi(ctx, m_rhs, divisor)
btiz divisor, .throwDivisionByZero
bineq divisor, -1, .safe
bieq dividend, constexpr INT32_MIN, .throwIntegerOverflow
.safe:
if X86_64 or X86_64_WIN
# FIXME: Add a way to static_assert that dividend is rax and r_rdx is rdx
# https://bugs.webkit.org/show_bug.cgi?id=203692
cdqi
# divide edx:eax by divisor (esi or r8), result in t0 (eax) remainder in edx
idivi divisor
elsif ARM64 or ARM64E or RISCV64
divis t1, t0
else
error
end
returni(ctx, t0)
.throwDivisionByZero:
throwException(DivisionByZero)
.throwIntegerOverflow:
throwException(IntegerOverflow)
end)
wasmOp(i32_div_u, WasmI32DivU, macro (ctx)
const dividend = t0
if X86_64_WIN
const divisor = t2
const r_rdx = t1
else
const divisor = t1
const r_rdx = t2
end
mloadi(ctx, m_lhs, dividend)
mloadi(ctx, m_rhs, divisor)
btiz divisor, .throwDivisionByZero
if X86_64 or X86_64_WIN
xori r_rdx, r_rdx
udivi divisor
elsif ARM64 or ARM64E or RISCV64
divi t1, t0
else
error
end
returni(ctx, t0)
.throwDivisionByZero:
throwException(DivisionByZero)
end)
wasmOp(i32_rem_s, WasmI32RemS, macro (ctx)
const dividend = t0
if X86_64_WIN
const divisor = t2
const r_rdx = t1
else
const divisor = t1
const r_rdx = t2
end
mloadi(ctx, m_lhs, dividend)
mloadi(ctx, m_rhs, divisor)
btiz divisor, .throwDivisionByZero
bineq divisor, -1, .safe
bineq dividend, constexpr INT32_MIN, .safe
move 0, r_rdx
jmp .return
.safe:
if X86_64 or X86_64_WIN
# FIXME: Add a way to static_assert that t0 is rax and r_rdx is rdx
# https://bugs.webkit.org/show_bug.cgi?id=203692
cdqi
idivi divisor
elsif ARM64 or ARM64E
divis t1, t0, t2
muli t1, t2
subi t0, t2, t2
elsif RISCV64
remis t0, t1, t2
else
error
end
.return:
returni(ctx, r_rdx)
.throwDivisionByZero:
throwException(DivisionByZero)
end)
wasmOp(i32_rem_u, WasmI32RemU, macro (ctx)
const dividend = t0
if X86_64_WIN
const divisor = t2
const r_rdx = t1
else
const divisor = t1
const r_rdx = t2
end
mloadi(ctx, m_lhs, dividend)
mloadi(ctx, m_rhs, divisor)
btiz divisor, .throwDivisionByZero
if X86_64 or X86_64_WIN
xori r_rdx, r_rdx
udivi divisor
elsif ARM64 or ARM64E
divi t1, t0, t2
muli t1, t2
subi t0, t2, t2
elsif RISCV64
remi t0, t1, t2
else
error
end
returni(ctx, r_rdx)
.throwDivisionByZero:
throwException(DivisionByZero)
end)
# i64 binary ops
wasmOp(i64_add, WasmI64Add, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadq(ctx, m_rhs, t1)
addq t0, t1
returnq(ctx, t1)
end)
wasmOp(i64_sub, WasmI64Sub, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadq(ctx, m_rhs, t1)
subq t1, t0
returnq(ctx, t0)
end)
wasmOp(i64_mul, WasmI64Mul, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadq(ctx, m_rhs, t1)
mulq t0, t1
returnq(ctx, t1)
end)
wasmOp(i64_div_s, WasmI64DivS, macro (ctx)
const dividend = t0
if X86_64_WIN
const divisor = t2
else
const divisor = t1
end
mloadq(ctx, m_lhs, dividend)
mloadq(ctx, m_rhs, divisor)
btqz divisor, .throwDivisionByZero
bqneq divisor, -1, .safe
bqeq dividend, constexpr INT64_MIN, .throwIntegerOverflow
.safe:
if X86_64 or X86_64_WIN
# FIXME: Add a way to static_assert that t0 is rax and divisor is not rdx
# https://bugs.webkit.org/show_bug.cgi?id=203692
cqoq
idivq divisor
elsif ARM64 or ARM64E or RISCV64
divqs t1, t0
else
error
end
returnq(ctx, t0)
.throwDivisionByZero:
throwException(DivisionByZero)
.throwIntegerOverflow:
throwException(IntegerOverflow)
end)
wasmOp(i64_div_u, WasmI64DivU, macro (ctx)
const dividend = t0
if X86_64_WIN
const divisor = t2
const r_rdx = t1
else
const divisor = t1
const r_rdx = t2
end
mloadq(ctx, m_lhs, dividend)
mloadq(ctx, m_rhs, divisor)
btqz divisor, .throwDivisionByZero
if X86_64 or X86_64_WIN
xorq r_rdx, r_rdx
udivq divisor
elsif ARM64 or ARM64E or RISCV64
divq t1, t0
else
error
end
returnq(ctx, t0)
.throwDivisionByZero:
throwException(DivisionByZero)
end)
wasmOp(i64_rem_s, WasmI64RemS, macro (ctx)
const dividend = t0
if X86_64_WIN
const divisor = t2
const r_rdx = t1
else
const divisor = t1
const r_rdx = t2
end
mloadq(ctx, m_lhs, dividend)
mloadq(ctx, m_rhs, divisor)
btqz divisor, .throwDivisionByZero
bqneq divisor, -1, .safe
bqneq dividend, constexpr INT64_MIN, .safe
move 0, r_rdx
jmp .return
.safe:
if X86_64 or X86_64_WIN
# FIXME: Add a way to static_assert that t0 is rax and r_rdx is rdx
# https://bugs.webkit.org/show_bug.cgi?id=203692
cqoq
idivq divisor
elsif ARM64 or ARM64E
divqs t1, t0, t2
mulq t1, t2
subq t0, t2, t2
elsif RISCV64
remqs t0, t1, t2
else
error
end
.return:
returnq(ctx, r_rdx)
.throwDivisionByZero:
throwException(DivisionByZero)
end)
wasmOp(i64_rem_u, WasmI64RemU, macro (ctx)
const dividend = t0
if X86_64_WIN
const divisor = t2
const r_rdx = t1
else
const divisor = t1
const r_rdx = t2
end
mloadq(ctx, m_lhs, dividend)
mloadq(ctx, m_rhs, divisor)
btqz divisor, .throwDivisionByZero
if X86_64 or X86_64_WIN
xorq r_rdx, r_rdx
udivq divisor
elsif ARM64 or ARM64E
divq t1, t0, t2
mulq t1, t2
subq t0, t2, t2
elsif RISCV64
remq t0, t1, t2
else
error
end
returnq(ctx, r_rdx)
.throwDivisionByZero:
throwException(DivisionByZero)
end)
wasmOp(i64_and, WasmI64And, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadq(ctx, m_rhs, t1)
andq t0, t1
returnq(ctx, t1)
end)
wasmOp(i64_or, WasmI64Or, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadq(ctx, m_rhs, t1)
orq t0, t1
returnq(ctx, t1)
end)
wasmOp(i64_xor, WasmI64Xor, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadq(ctx, m_rhs, t1)
xorq t0, t1
returnq(ctx, t1)
end)
wasmOp(i64_shl, WasmI64Shl, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadi(ctx, m_rhs, t1)
lshiftq t1, t0
returnq(ctx, t0)
end)
wasmOp(i64_shr_u, WasmI64ShrU, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadi(ctx, m_rhs, t1)
urshiftq t1, t0
returnq(ctx, t0)
end)
wasmOp(i64_shr_s, WasmI64ShrS, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadi(ctx, m_rhs, t1)
rshiftq t1, t0
returnq(ctx, t0)
end)
wasmOp(i64_rotr, WasmI64Rotr, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadi(ctx, m_rhs, t1)
rrotateq t1, t0
returnq(ctx, t0)
end)
wasmOp(i64_rotl, WasmI64Rotl, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadi(ctx, m_rhs, t1)
lrotateq t1, t0
returnq(ctx, t0)
end)
wasmOp(i64_eq, WasmI64Eq, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadq(ctx, m_rhs, t1)
cqeq t0, t1, t2
returni(ctx, t2)
end)
wasmOp(i64_ne, WasmI64Ne, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadq(ctx, m_rhs, t1)
cqneq t0, t1, t2
returni(ctx, t2)
end)
wasmOp(i64_lt_s, WasmI64LtS, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadq(ctx, m_rhs, t1)
cqlt t0, t1, t2
returni(ctx, t2)
end)
wasmOp(i64_le_s, WasmI64LeS, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadq(ctx, m_rhs, t1)
cqlteq t0, t1, t2
returni(ctx, t2)
end)
wasmOp(i64_lt_u, WasmI64LtU, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadq(ctx, m_rhs, t1)
cqb t0, t1, t2
returni(ctx, t2)
end)
wasmOp(i64_le_u, WasmI64LeU, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadq(ctx, m_rhs, t1)
cqbeq t0, t1, t2
returni(ctx, t2)
end)
wasmOp(i64_gt_s, WasmI64GtS, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadq(ctx, m_rhs, t1)
cqgt t0, t1, t2
returni(ctx, t2)
end)
wasmOp(i64_ge_s, WasmI64GeS, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadq(ctx, m_rhs, t1)
cqgteq t0, t1, t2
returni(ctx, t2)
end)
wasmOp(i64_gt_u, WasmI64GtU, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadq(ctx, m_rhs, t1)
cqa t0, t1, t2
returni(ctx, t2)
end)
wasmOp(i64_ge_u, WasmI64GeU, macro(ctx)
mloadq(ctx, m_lhs, t0)
mloadq(ctx, m_rhs, t1)
cqaeq t0, t1, t2
returni(ctx, t2)
end)
# i64 unary ops
wasmOp(i64_ctz, WasmI64Ctz, macro (ctx)
mloadq(ctx, m_operand, t0)
tzcntq t0, t0
returnq(ctx, t0)
end)
wasmOp(i64_clz, WasmI64Clz, macro(ctx)
mloadq(ctx, m_operand, t0)
lzcntq t0, t1
returnq(ctx, t1)
end)
wasmOp(i64_popcnt, WasmI64Popcnt, macro (ctx)
mloadq(ctx, m_operand, a1)
prepareStateForCCall()
move PC, a0
cCall2(_slow_path_wasm_popcountll)
restoreStateAfterCCall()
returnq(ctx, r1)
end)
wasmOp(i64_eqz, WasmI64Eqz, macro(ctx)
mloadq(ctx, m_operand, t0)
cqeq t0, 0, t0
returni(ctx, t0)
end)
# f64 binary ops
wasmOp(f64_copysign, WasmF64Copysign, macro(ctx)
mloadd(ctx, m_lhs, ft0)
mloadd(ctx, m_rhs, ft1)
fd2q ft1, t1
move 0x8000000000000000, t2
andq t2, t1
fd2q ft0, t0
move 0x7fffffffffffffff, t2
andq t2, t0
orq t1, t0
fq2d t0, ft0
returnd(ctx, ft0)
end)
# Type conversion ops
wasmOp(i64_extend_s_i32, WasmI64ExtendSI32, macro(ctx)
mloadi(ctx, m_operand, t0)
sxi2q t0, t1
returnq(ctx, t1)
end)
wasmOp(i64_extend_u_i32, WasmI64ExtendUI32, macro(ctx)
mloadi(ctx, m_operand, t0)
zxi2q t0, t1
returnq(ctx, t1)
end)
wasmOp(f64_reinterpret_i64, WasmF64ReinterpretI64, macro(ctx)
mloadq(ctx, m_operand, t0)
fq2d t0, ft0
returnd(ctx, ft0)
end)
wasmOp(i64_reinterpret_f64, WasmI64ReinterpretF64, macro(ctx)
mloadd(ctx, m_operand, ft0)
fd2q ft0, t0
returnq(ctx, t0)
end)
wasmOp(i32_trunc_s_f64, WasmI32TruncSF64, macro (ctx)
mloadd(ctx, m_operand, ft0)
move 0xc1e0000000200000, t0 # INT32_MIN - 1.0
fq2d t0, ft1
bdltequn ft0, ft1, .outOfBoundsTrunc
move 0x41e0000000000000, t0 # -INT32_MIN
fq2d t0, ft1
bdgtequn ft0, ft1, .outOfBoundsTrunc
truncated2is ft0, t0
returni(ctx, t0)
.outOfBoundsTrunc:
throwException(OutOfBoundsTrunc)
end)
wasmOp(i32_trunc_u_f64, WasmI32TruncUF64, macro (ctx)
mloadd(ctx, m_operand, ft0)
move 0xbff0000000000000, t0 # -1.0
fq2d t0, ft1
bdltequn ft0, ft1, .outOfBoundsTrunc
move 0x41f0000000000000, t0 # INT32_MIN * -2.0
fq2d t0, ft1
bdgtequn ft0, ft1, .outOfBoundsTrunc
truncated2i ft0, t0
returni(ctx, t0)
.outOfBoundsTrunc:
throwException(OutOfBoundsTrunc)
end)
wasmOp(i64_trunc_s_f32, WasmI64TruncSF32, macro (ctx)
mloadf(ctx, m_operand, ft0)
move 0xdf000000, t0 # INT64_MIN
fi2f t0, ft1
bfltun ft0, ft1, .outOfBoundsTrunc
move 0x5f000000, t0 # -INT64_MIN
fi2f t0, ft1
bfgtequn ft0, ft1, .outOfBoundsTrunc
truncatef2qs ft0, t0
returnq(ctx, t0)
.outOfBoundsTrunc:
throwException(OutOfBoundsTrunc)
end)
wasmOp(i64_trunc_u_f32, WasmI64TruncUF32, macro (ctx)
mloadf(ctx, m_operand, ft0)
move 0xbf800000, t0 # -1.0
fi2f t0, ft1
bfltequn ft0, ft1, .outOfBoundsTrunc
move 0x5f800000, t0 # INT64_MIN * -2.0
fi2f t0, ft1
bfgtequn ft0, ft1, .outOfBoundsTrunc
truncatef2q ft0, t0
returnq(ctx, t0)
.outOfBoundsTrunc:
throwException(OutOfBoundsTrunc)
end)
wasmOp(i64_trunc_s_f64, WasmI64TruncSF64, macro (ctx)
mloadd(ctx, m_operand, ft0)
move 0xc3e0000000000000, t0 # INT64_MIN
fq2d t0, ft1
bdltun ft0, ft1, .outOfBoundsTrunc
move 0x43e0000000000000, t0 # -INT64_MIN
fq2d t0, ft1
bdgtequn ft0, ft1, .outOfBoundsTrunc
truncated2qs ft0, t0
returnq(ctx, t0)
.outOfBoundsTrunc:
throwException(OutOfBoundsTrunc)
end)
wasmOp(i64_trunc_u_f64, WasmI64TruncUF64, macro (ctx)
mloadd(ctx, m_operand, ft0)
move 0xbff0000000000000, t0 # -1.0
fq2d t0, ft1
bdltequn ft0, ft1, .outOfBoundsTrunc
move 0x43f0000000000000, t0 # INT64_MIN * -2.0
fq2d t0, ft1
bdgtequn ft0, ft1, .outOfBoundsTrunc
truncated2q ft0, t0
returnq(ctx, t0)
.outOfBoundsTrunc:
throwException(OutOfBoundsTrunc)
end)
wasmOp(i32_trunc_sat_f64_s, WasmI32TruncSatF64S, macro (ctx)
mloadd(ctx, m_operand, ft0)
move 0xc1e0000000200000, t0 # INT32_MIN - 1.0
fq2d t0, ft1
bdltequn ft0, ft1, .outOfBoundsTruncSatMinOrNaN
move 0x41e0000000000000, t0 # -INT32_MIN
fq2d t0, ft1
bdgtequn ft0, ft1, .outOfBoundsTruncSatMax
truncated2is ft0, t0
returni(ctx, t0)
.outOfBoundsTruncSatMinOrNaN:
bdeq ft0, ft0, .outOfBoundsTruncSatMin
move 0, t0
returni(ctx, t0)
.outOfBoundsTruncSatMax:
move (constexpr INT32_MAX), t0
returni(ctx, t0)
.outOfBoundsTruncSatMin:
move (constexpr INT32_MIN), t0
returni(ctx, t0)
end)
wasmOp(i32_trunc_sat_f64_u, WasmI32TruncSatF64U, macro (ctx)
mloadd(ctx, m_operand, ft0)
move 0xbff0000000000000, t0 # -1.0
fq2d t0, ft1
bdltequn ft0, ft1, .outOfBoundsTruncSatMin
move 0x41f0000000000000, t0 # INT32_MIN * -2.0
fq2d t0, ft1
bdgtequn ft0, ft1, .outOfBoundsTruncSatMax
truncated2i ft0, t0
returni(ctx, t0)
.outOfBoundsTruncSatMin:
move 0, t0
returni(ctx, t0)
.outOfBoundsTruncSatMax:
move (constexpr UINT32_MAX), t0
returni(ctx, t0)
end)
wasmOp(i64_trunc_sat_f32_s, WasmI64TruncSatF32S, macro (ctx)
mloadf(ctx, m_operand, ft0)
move 0xdf000000, t0 # INT64_MIN
fi2f t0, ft1
bfltun ft0, ft1, .outOfBoundsTruncSatMinOrNaN
move 0x5f000000, t0 # -INT64_MIN
fi2f t0, ft1
bfgtequn ft0, ft1, .outOfBoundsTruncSatMax
truncatef2qs ft0, t0
returnq(ctx, t0)
.outOfBoundsTruncSatMinOrNaN:
bfeq ft0, ft0, .outOfBoundsTruncSatMin
move 0, t0
returnq(ctx, t0)
.outOfBoundsTruncSatMax:
move (constexpr INT64_MAX), t0
returnq(ctx, t0)
.outOfBoundsTruncSatMin:
move (constexpr INT64_MIN), t0
returnq(ctx, t0)
end)
wasmOp(i64_trunc_sat_f32_u, WasmI64TruncSatF32U, macro (ctx)
mloadf(ctx, m_operand, ft0)
move 0xbf800000, t0 # -1.0
fi2f t0, ft1
bfltequn ft0, ft1, .outOfBoundsTruncSatMin
move 0x5f800000, t0 # INT64_MIN * -2.0
fi2f t0, ft1
bfgtequn ft0, ft1, .outOfBoundsTruncSatMax
truncatef2q ft0, t0
returnq(ctx, t0)
.outOfBoundsTruncSatMin:
move 0, t0
returnq(ctx, t0)
.outOfBoundsTruncSatMax:
move (constexpr UINT64_MAX), t0
returnq(ctx, t0)
end)
wasmOp(i64_trunc_sat_f64_s, WasmI64TruncSatF64S, macro (ctx)
mloadd(ctx, m_operand, ft0)
move 0xc3e0000000000000, t0 # INT64_MIN
fq2d t0, ft1
bdltun ft0, ft1, .outOfBoundsTruncSatMinOrNaN
move 0x43e0000000000000, t0 # -INT64_MIN
fq2d t0, ft1
bdgtequn ft0, ft1, .outOfBoundsTruncSatMax
truncated2qs ft0, t0
returnq(ctx, t0)
.outOfBoundsTruncSatMinOrNaN:
bdeq ft0, ft0, .outOfBoundsTruncSatMin
move 0, t0
returnq(ctx, t0)
.outOfBoundsTruncSatMax:
move (constexpr INT64_MAX), t0
returnq(ctx, t0)
.outOfBoundsTruncSatMin:
move (constexpr INT64_MIN), t0
returnq(ctx, t0)
end)
wasmOp(i64_trunc_sat_f64_u, WasmI64TruncSatF64U, macro (ctx)
mloadd(ctx, m_operand, ft0)
move 0xbff0000000000000, t0 # -1.0
fq2d t0, ft1
bdltequn ft0, ft1, .outOfBoundsTruncSatMin
move 0x43f0000000000000, t0 # INT64_MIN * -2.0
fq2d t0, ft1
bdgtequn ft0, ft1, .outOfBoundsTruncSatMax
truncated2q ft0, t0
returnq(ctx, t0)
.outOfBoundsTruncSatMin:
move 0, t0
returnq(ctx, t0)
.outOfBoundsTruncSatMax:
move (constexpr UINT64_MAX), t0
returnq(ctx, t0)
end)
# Extend ops
wasmOp(i64_extend8_s, WasmI64Extend8S, macro(ctx)
mloadq(ctx, m_operand, t0)
sxb2q t0, t1
returnq(ctx, t1)
end)
wasmOp(i64_extend16_s, WasmI64Extend16S, macro(ctx)
mloadq(ctx, m_operand, t0)
sxh2q t0, t1
returnq(ctx, t1)
end)
wasmOp(i64_extend32_s, WasmI64Extend16S, macro(ctx)
mloadq(ctx, m_operand, t0)
sxi2q t0, t1
returnq(ctx, t1)
end)
# Atomics
macro wasmAtomicBinaryRMWOps(lowerCaseOpcode, upperCaseOpcode, fnb, fnh, fni, fnq)
wasmOp(i64_atomic_rmw8%lowerCaseOpcode%_u, WasmI64AtomicRmw8%upperCaseOpcode%U, macro(ctx)
mloadi(ctx, m_pointer, t3)
wgetu(ctx, m_offset, t1)
mloadq(ctx, m_value, t0)
emitCheckAndPreparePointerAddingOffset(ctx, t3, t1, 1)
fnb(t0, [t3], t2, t5, t1)
andq 0xff, t0 # FIXME: ZeroExtend8To64
assert(macro(ok) bqbeq t0, 0xff, .ok end)
returnq(ctx, t0)
end)
wasmOp(i64_atomic_rmw16%lowerCaseOpcode%_u, WasmI64AtomicRmw16%upperCaseOpcode%U, macro(ctx)
mloadi(ctx, m_pointer, t3)
wgetu(ctx, m_offset, t1)
mloadq(ctx, m_value, t0)
emitCheckAndPreparePointerAddingOffsetWithAlignmentCheck(ctx, t3, t1, 2)
fnh(t0, [t3], t2, t5, t1)
andq 0xffff, t0 # FIXME: ZeroExtend16To64
assert(macro(ok) bqbeq t0, 0xffff, .ok end)
returnq(ctx, t0)
end)
wasmOp(i64_atomic_rmw32%lowerCaseOpcode%_u, WasmI64AtomicRmw32%upperCaseOpcode%U, macro(ctx)
mloadi(ctx, m_pointer, t3)
wgetu(ctx, m_offset, t1)
mloadq(ctx, m_value, t0)
emitCheckAndPreparePointerAddingOffsetWithAlignmentCheck(ctx, t3, t1, 4)
fni(t0, [t3], t2, t5, t1)
assert(macro(ok) bqbeq t0, 0xffffffff, .ok end)
returnq(ctx, t0)
end)
wasmOp(i64_atomic_rmw%lowerCaseOpcode%, WasmI64AtomicRmw%upperCaseOpcode%, macro(ctx)
mloadi(ctx, m_pointer, t3)
wgetu(ctx, m_offset, t1)
mloadq(ctx, m_value, t0)
emitCheckAndPreparePointerAddingOffsetWithAlignmentCheck(ctx, t3, t1, 8)
fnq(t0, [t3], t2, t5, t1)
returnq(ctx, t0)
end)
end
macro wasmAtomicBinaryRMWOpsWithWeakCAS(lowerCaseOpcode, upperCaseOpcode, fni, fnq)
wasmAtomicBinaryRMWOps(lowerCaseOpcode, upperCaseOpcode,
macro(t0GPR, mem, t2GPR, t5GPR, t1GPR)
if X86_64 or X86_64_WIN
move t0GPR, t5GPR
loadb mem, t0GPR
.loop:
move t0GPR, t2GPR
fni(t5GPR, t2GPR)
batomicweakcasb t0GPR, t2GPR, mem, .loop
else
.loop: