mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
110 lines
3.2 KiB
Plaintext
110 lines
3.2 KiB
Plaintext
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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// NOTE: This file is used to generate `ewasmPolyfills/Memory.h`.
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function save_temp_mem_32() -> t1, t2, t3, t4 {
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t1 := i64.load(0:i32)
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t2 := i64.load(8:i32)
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t3 := i64.load(16:i32)
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t4 := i64.load(24:i32)
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}
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function restore_temp_mem_32(t1, t2, t3, t4) {
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i64.store(0:i32, t1)
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i64.store(8:i32, t2)
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i64.store(16:i32, t3)
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i64.store(24:i32, t4)
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}
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function save_temp_mem_64() -> t1, t2, t3, t4, t5, t6, t7, t8 {
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t1 := i64.load(0:i32)
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t2 := i64.load(8:i32)
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t3 := i64.load(16:i32)
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t4 := i64.load(24:i32)
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t5 := i64.load(32:i32)
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t6 := i64.load(40:i32)
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t7 := i64.load(48:i32)
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t8 := i64.load(54:i32)
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}
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function restore_temp_mem_64(t1, t2, t3, t4, t5, t6, t7, t8) {
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i64.store(0:i32, t1)
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i64.store(8:i32, t2)
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i64.store(16:i32, t3)
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i64.store(24:i32, t4)
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i64.store(32:i32, t5)
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i64.store(40:i32, t6)
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i64.store(48:i32, t7)
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i64.store(54:i32, t8)
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}
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function pop(x1, x2, x3, x4) {
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}
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function memoryguard(x:i64) -> y1, y2, y3, y4 {
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y4 := x
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}
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// Fill `length` bytes starting from `ptr` with `value`.
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function memset(ptr:i32, value:i32, length:i32) {
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for { let i:i32 := 0:i32 } i32.lt_u(i, length) { i := i32.add(i, 1:i32) }
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{
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i32.store8(i32.add(ptr, i), value)
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}
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}
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// Writes 256-bits from `pos`, but only set the bottom 160-bits.
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function mstore_address(pos:i32, a1, a2, a3, a4) {
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a1, a2, a3 := u256_to_address(a1, a2, a3, a4)
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i64.store(pos, 0:i64)
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i32.store(i32.add(pos, 8:i32), 0:i32)
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i32.store(i32.add(pos, 12:i32), bswap32(i32.wrap_i64(a1)))
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i64.store(i32.add(pos, 16:i32), bswap64(a2))
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i64.store(i32.add(pos, 24:i32), bswap64(a3))
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}
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// Reads 256-bits from `pos`, but only returns the bottom 160-bits.
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function mload_address(pos:i32) -> z1, z2, z3, z4 {
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z2 := i64.extend_i32_u(bswap32(i32.load(i32.add(pos, 12:i32))))
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z3 := bswap64(i64.load(i32.add(pos, 16:i32)))
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z4 := bswap64(i64.load(i32.add(pos, 24:i32)))
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}
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// Writes 256-bits from `pos`.
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function mstore_internal(pos:i32, y1, y2, y3, y4) {
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i64.store(pos, bswap64(y1))
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i64.store(i32.add(pos, 8:i32), bswap64(y2))
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i64.store(i32.add(pos, 16:i32), bswap64(y3))
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i64.store(i32.add(pos, 24:i32), bswap64(y4))
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}
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// Reads 256-bits from `pos`.
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function mload_internal(pos:i32) -> z1, z2, z3, z4 {
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z1 := bswap64(i64.load(pos))
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z2 := bswap64(i64.load(i32.add(pos, 8:i32)))
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z3 := bswap64(i64.load(i32.add(pos, 16:i32)))
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z4 := bswap64(i64.load(i32.add(pos, 24:i32)))
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}
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// Stores one byte at position `x` of value `y`.
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function mstore8(x1, x2, x3, x4, y1, y2, y3, y4) {
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let v := u256_to_byte(y1, y2, y3, y4)
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i64.store8(to_internal_i32ptr(x1, x2, x3, x4), v)
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}
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