| // Copyright 2022 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 REGCTXT R29 | |
| // memequal(a, b unsafe.Pointer, size uintptr) bool | |
| TEXT runtime·memequal(SB),NOSPLIT|NOFRAME,$0-25 | |
| MOVV a+0(FP), R4 | |
| MOVV b+8(FP), R5 | |
| BEQ R4, R5, eq | |
| MOVV size+16(FP), R6 | |
| ADDV R4, R6, R7 | |
| PCALIGN $16 | |
| loop: | |
| BNE R4, R7, test | |
| MOVV $1, R4 | |
| MOVB R4, ret+24(FP) | |
| RET | |
| test: | |
| MOVBU (R4), R9 | |
| ADDV $1, R4 | |
| MOVBU (R5), R10 | |
| ADDV $1, R5 | |
| BEQ R9, R10, loop | |
| MOVB R0, ret+24(FP) | |
| RET | |
| eq: | |
| MOVV $1, R4 | |
| MOVB R4, ret+24(FP) | |
| RET | |
| // memequal_varlen(a, b unsafe.Pointer) bool | |
| TEXT runtime·memequal_varlen(SB),NOSPLIT,$40-17 | |
| MOVV a+0(FP), R4 | |
| MOVV b+8(FP), R5 | |
| BEQ R4, R5, eq | |
| MOVV 8(REGCTXT), R6 // compiler stores size at offset 8 in the closure | |
| MOVV R4, 8(R3) | |
| MOVV R5, 16(R3) | |
| MOVV R6, 24(R3) | |
| JAL runtime·memequal(SB) | |
| MOVBU 32(R3), R4 | |
| MOVB R4, ret+16(FP) | |
| RET | |
| eq: | |
| MOVV $1, R4 | |
| MOVB R4, ret+16(FP) | |
| RET |