1 // Copyright 2018 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
4
5 //go:build mips || mipsle
6
7 #include "go_asm.h"
8 #include "textflag.h"
9
10 #define REGCTXT R22
11
12 // memequal(a, b unsafe.Pointer, size uintptr) bool
13 TEXT runtime·memequal(SB),NOSPLIT,$0-13
14 MOVW a+0(FP), R1
15 MOVW b+4(FP), R2
16 BEQ R1, R2, eq
17 MOVW size+8(FP), R3
18 ADDU R1, R3, R4
19 loop:
20 BNE R1, R4, test
21 MOVW $1, R1
22 MOVB R1, ret+12(FP)
23 RET
24 test:
25 MOVBU (R1), R6
26 ADDU $1, R1
27 MOVBU (R2), R7
28 ADDU $1, R2
29 BEQ R6, R7, loop
30
31 MOVB R0, ret+12(FP)
32 RET
33 eq:
34 MOVW $1, R1
35 MOVB R1, ret+12(FP)
36 RET
37
38 // memequal_varlen(a, b unsafe.Pointer) bool
39 TEXT runtime·memequal_varlen(SB),NOSPLIT,$0-9
40 MOVW a+0(FP), R1
41 MOVW b+4(FP), R2
42 BEQ R1, R2, eq
43 MOVW 4(REGCTXT), R3 // compiler stores size at offset 4 in the closure
44 ADDU R1, R3, R4
45 loop:
46 BNE R1, R4, test
47 MOVW $1, R1
48 MOVB R1, ret+8(FP)
49 RET
50 test:
51 MOVBU (R1), R6
52 ADDU $1, R1
53 MOVBU (R2), R7
54 ADDU $1, R2
55 BEQ R6, R7, loop
56
57 MOVB R0, ret+8(FP)
58 RET
59 eq:
60 MOVW $1, R1
61 MOVB R1, ret+8(FP)
62 RET
63
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