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Diffstat (limited to 'src/runtime/sys_wasm.s')
| -rw-r--r-- | src/runtime/sys_wasm.s | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/runtime/sys_wasm.s b/src/runtime/sys_wasm.s new file mode 100644 index 0000000..164dd16 --- /dev/null +++ b/src/runtime/sys_wasm.s @@ -0,0 +1,202 @@ +// 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 ·walltime(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 |