|  | // Copyright 2018 The Go Authors. All rights reserved. | 
|  | // Use of this source code is governed by a BSD-style | 
|  | // license that can be found in the LICENSE file. | 
|  |  | 
|  | #include "textflag.h" | 
|  |  | 
|  | TEXT runtime·wasmMove(SB), NOSPLIT, $0-0 | 
|  | loop: | 
|  | Loop | 
|  | // *dst = *src | 
|  | Get R0 | 
|  | Get R1 | 
|  | I64Load $0 | 
|  | I64Store $0 | 
|  |  | 
|  | // n-- | 
|  | Get R2 | 
|  | I32Const $1 | 
|  | I32Sub | 
|  | Tee R2 | 
|  |  | 
|  | // n == 0 | 
|  | I32Eqz | 
|  | If | 
|  | Return | 
|  | End | 
|  |  | 
|  | // dst += 8 | 
|  | Get R0 | 
|  | I32Const $8 | 
|  | I32Add | 
|  | Set R0 | 
|  |  | 
|  | // src += 8 | 
|  | Get R1 | 
|  | I32Const $8 | 
|  | I32Add | 
|  | Set R1 | 
|  |  | 
|  | Br loop | 
|  | End | 
|  | UNDEF | 
|  |  | 
|  | TEXT runtime·wasmZero(SB), NOSPLIT, $0-0 | 
|  | loop: | 
|  | Loop | 
|  | // *dst = 0 | 
|  | Get R0 | 
|  | I64Const $0 | 
|  | I64Store $0 | 
|  |  | 
|  | // n-- | 
|  | Get R1 | 
|  | I32Const $1 | 
|  | I32Sub | 
|  | Tee R1 | 
|  |  | 
|  | // n == 0 | 
|  | I32Eqz | 
|  | If | 
|  | Return | 
|  | End | 
|  |  | 
|  | // dst += 8 | 
|  | Get R0 | 
|  | I32Const $8 | 
|  | I32Add | 
|  | Set R0 | 
|  |  | 
|  | Br loop | 
|  | End | 
|  | UNDEF | 
|  |  | 
|  | TEXT runtime·wasmDiv(SB), NOSPLIT, $0-0 | 
|  | Get R0 | 
|  | I64Const $-0x8000000000000000 | 
|  | I64Eq | 
|  | If | 
|  | Get R1 | 
|  | I64Const $-1 | 
|  | I64Eq | 
|  | If | 
|  | I64Const $-0x8000000000000000 | 
|  | Return | 
|  | End | 
|  | End | 
|  | Get R0 | 
|  | Get R1 | 
|  | I64DivS | 
|  | Return | 
|  |  | 
|  | TEXT runtime·wasmTruncS(SB), NOSPLIT, $0-0 | 
|  | Get R0 | 
|  | Get R0 | 
|  | F64Ne // NaN | 
|  | If | 
|  | I64Const $0x8000000000000000 | 
|  | Return | 
|  | End | 
|  |  | 
|  | Get R0 | 
|  | F64Const $0x7ffffffffffffc00p0 // Maximum truncated representation of 0x7fffffffffffffff | 
|  | F64Gt | 
|  | If | 
|  | I64Const $0x8000000000000000 | 
|  | Return | 
|  | End | 
|  |  | 
|  | Get R0 | 
|  | F64Const $-0x7ffffffffffffc00p0 // Minimum truncated representation of -0x8000000000000000 | 
|  | F64Lt | 
|  | If | 
|  | I64Const $0x8000000000000000 | 
|  | Return | 
|  | End | 
|  |  | 
|  | Get R0 | 
|  | I64TruncF64S | 
|  | Return | 
|  |  | 
|  | TEXT runtime·wasmTruncU(SB), NOSPLIT, $0-0 | 
|  | Get R0 | 
|  | Get R0 | 
|  | F64Ne // NaN | 
|  | If | 
|  | I64Const $0x8000000000000000 | 
|  | Return | 
|  | End | 
|  |  | 
|  | Get R0 | 
|  | F64Const $0xfffffffffffff800p0 // Maximum truncated representation of 0xffffffffffffffff | 
|  | F64Gt | 
|  | If | 
|  | I64Const $0x8000000000000000 | 
|  | Return | 
|  | End | 
|  |  | 
|  | Get R0 | 
|  | F64Const $0. | 
|  | F64Lt | 
|  | If | 
|  | I64Const $0x8000000000000000 | 
|  | Return | 
|  | End | 
|  |  | 
|  | Get R0 | 
|  | I64TruncF64U | 
|  | Return | 
|  |  | 
|  | TEXT runtime·exitThread(SB), NOSPLIT, $0-0 | 
|  | UNDEF | 
|  |  | 
|  | TEXT runtime·osyield(SB), NOSPLIT, $0-0 | 
|  | UNDEF | 
|  |  | 
|  | TEXT runtime·usleep(SB), NOSPLIT, $0-0 | 
|  | RET // TODO(neelance): implement usleep | 
|  |  | 
|  | TEXT runtime·currentMemory(SB), NOSPLIT, $0 | 
|  | Get SP | 
|  | CurrentMemory | 
|  | I32Store ret+0(FP) | 
|  | RET | 
|  |  | 
|  | TEXT runtime·growMemory(SB), NOSPLIT, $0 | 
|  | Get SP | 
|  | I32Load pages+0(FP) | 
|  | GrowMemory | 
|  | I32Store ret+8(FP) | 
|  | RET | 
|  |  | 
|  | TEXT ·resetMemoryDataView(SB), NOSPLIT, $0 | 
|  | CallImport | 
|  | RET | 
|  |  | 
|  | TEXT ·wasmExit(SB), NOSPLIT, $0 | 
|  | CallImport | 
|  | RET | 
|  |  | 
|  | TEXT ·wasmWrite(SB), NOSPLIT, $0 | 
|  | CallImport | 
|  | RET | 
|  |  | 
|  | TEXT ·nanotime1(SB), NOSPLIT, $0 | 
|  | CallImport | 
|  | RET | 
|  |  | 
|  | TEXT ·walltime1(SB), NOSPLIT, $0 | 
|  | CallImport | 
|  | RET | 
|  |  | 
|  | TEXT ·scheduleTimeoutEvent(SB), NOSPLIT, $0 | 
|  | CallImport | 
|  | RET | 
|  |  | 
|  | TEXT ·clearTimeoutEvent(SB), NOSPLIT, $0 | 
|  | CallImport | 
|  | RET | 
|  |  | 
|  | TEXT ·getRandomData(SB), NOSPLIT, $0 | 
|  | CallImport | 
|  | RET |