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equal_wasm.s
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// 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 "go_asm.h"
#include "textflag.h"
// memequal(p, q unsafe.Pointer, size uintptr) bool
TEXT runtime·memequal(SB), NOSPLIT, $0-25
Get SP
I64Load a+0(FP)
I64Load b+8(FP)
I64Load size+16(FP)
Call memeqbody<>(SB)
I64Store8 ret+24(FP)
RET
// memequal_varlen(a, b unsafe.Pointer) bool
TEXT runtime·memequal_varlen(SB), NOSPLIT, $0-17
Get SP
I64Load a+0(FP)
I64Load b+8(FP)
I64Load 8(CTXT) // compiler stores size at offset 8 in the closure
Call memeqbody<>(SB)
I64Store8 ret+16(FP)
RET
// params: a, b, len
// ret: 0/1
TEXT memeqbody<>(SB), NOSPLIT, $0-0
Get R0
Get R1
I64Eq
If
I64Const $1
Return
End
loop:
Loop
Get R2
I64Eqz
If
I64Const $1
Return
End
Get R0
I32WrapI64
I64Load8U $0
Get R1
I32WrapI64
I64Load8U $0
I64Ne
If
I64Const $0
Return
End
Get R0
I64Const $1
I64Add
Set R0
Get R1
I64Const $1
I64Add
Set R1
Get R2
I64Const $1
I64Sub
Set R2
Br loop
End
UNDEF