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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 13:16:40 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 13:16:40 +0000 |
| commit | 47ab3d4a42e9ab51c465c4322d2ec233f6324e6b (patch) | |
| tree | a61a0ffd83f4a3def4b36e5c8e99630c559aa723 /src/internal/bytealg/equal_riscv64.s | |
| parent | Initial commit. (diff) | |
| download | golang-1.18-47ab3d4a42e9ab51c465c4322d2ec233f6324e6b.tar.xz golang-1.18-47ab3d4a42e9ab51c465c4322d2ec233f6324e6b.zip | |
Adding upstream version 1.18.10.upstream/1.18.10upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/internal/bytealg/equal_riscv64.s')
| -rw-r--r-- | src/internal/bytealg/equal_riscv64.s | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/internal/bytealg/equal_riscv64.s b/src/internal/bytealg/equal_riscv64.s new file mode 100644 index 0000000..22cb4fa --- /dev/null +++ b/src/internal/bytealg/equal_riscv64.s @@ -0,0 +1,49 @@ +// Copyright 2019 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" + +#define CTXT S4 + +// func memequal(a, b unsafe.Pointer, size uintptr) bool +TEXT runtime·memequal(SB),NOSPLIT|NOFRAME,$0-25 + MOV a+0(FP), A1 + MOV b+8(FP), A2 + BEQ A1, A2, eq + MOV size+16(FP), A3 + ADD A1, A3, A4 +loop: + BEQ A1, A4, eq + + MOVBU (A1), A6 + ADD $1, A1 + MOVBU (A2), A7 + ADD $1, A2 + BEQ A6, A7, loop + + MOVB ZERO, ret+24(FP) + RET +eq: + MOV $1, A1 + MOVB A1, ret+24(FP) + RET + +// func memequal_varlen(a, b unsafe.Pointer) bool +TEXT runtime·memequal_varlen(SB),NOSPLIT,$40-17 + MOV a+0(FP), A1 + MOV b+8(FP), A2 + BEQ A1, A2, eq + MOV 8(CTXT), A3 // compiler stores size at offset 8 in the closure + MOV A1, 8(X2) + MOV A2, 16(X2) + MOV A3, 24(X2) + CALL runtime·memequal(SB) + MOVBU 32(X2), A1 + MOVB A1, ret+16(FP) + RET +eq: + MOV $1, A1 + MOVB A1, ret+16(FP) + RET |