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internal/bytealg: support basic byte operation on loong64
Contributors to the loong64 port are: Weining Lu <luweining@loongson.cn> Lei Wang <wanglei@loongson.cn> Lingqin Gong <gonglingqin@loongson.cn> Xiaolin Zhao <zhaoxiaolin@loongson.cn> Meidan Li <limeidan@loongson.cn> Xiaojuan Zhai <zhaixiaojuan@loongson.cn> Qiyuan Pu <puqiyuan@loongson.cn> Guoqi Chen <chenguoqi@loongson.cn> This port has been updated to Go 1.15.6: https://github.com/loongson/go Updates #46229 Change-Id: I4ac6d38dc632abfa0b698325ca0ae349c0d7ecd3 Reviewed-on: https://go-review.googlesource.com/c/go/+/342316 Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: David Chase <drchase@google.com> Run-TryBot: David Chase <drchase@google.com> TryBot-Result: Gopher Robot <gobot@golang.org>
This commit is contained in:
Xiaodong Liu
Ian Lance Taylor
parent
a6f3f8d973
commit
d28bf6c9a2
@ -2,7 +2,7 @@
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build !386 && !amd64 && !s390x && !arm && !arm64 && !ppc64 && !ppc64le && !mips && !mipsle && !wasm && !mips64 && !mips64le && !riscv64
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//go:build !386 && !amd64 && !s390x && !arm && !arm64 && !loong64 && !ppc64 && !ppc64le && !mips && !mipsle && !wasm && !mips64 && !mips64le && !riscv64
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package bytealg
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86
src/internal/bytealg/compare_loong64.s
Normal file
86
src/internal/bytealg/compare_loong64.s
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@ -0,0 +1,86 @@
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// Copyright 2022 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include "go_asm.h"
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#include "textflag.h"
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TEXT ·Compare(SB),NOSPLIT,$0-56
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MOVV a_base+0(FP), R6
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MOVV b_base+24(FP), R7
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MOVV a_len+8(FP), R4
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MOVV b_len+32(FP), R5
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MOVV $ret+48(FP), R13
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JMP cmpbody<>(SB)
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TEXT runtime·cmpstring(SB),NOSPLIT,$0-40
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MOVV a_base+0(FP), R6
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MOVV b_base+16(FP), R7
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MOVV a_len+8(FP), R4
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MOVV b_len+24(FP), R5
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MOVV $ret+32(FP), R13
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JMP cmpbody<>(SB)
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// On entry:
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// R4 length of a
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// R5 length of b
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// R6 points to the start of a
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// R7 points to the start of b
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// R13 points to the return value (-1/0/1)
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TEXT cmpbody<>(SB),NOSPLIT|NOFRAME,$0
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BEQ R6, R7, samebytes // same start of a and b
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SGTU R4, R5, R9
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BNE R0, R9, r2_lt_r1
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MOVV R4, R14
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JMP entry
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r2_lt_r1:
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MOVV R5, R14 // R14 is min(R4, R5)
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entry:
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ADDV R6, R14, R12 // R6 start of a, R14 end of a
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BEQ R6, R12, samebytes // length is 0
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SRLV $4, R14 // R14 is number of chunks
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BEQ R0, R14, byte_loop
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// make sure both a and b are aligned.
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OR R6, R7, R15
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AND $7, R15
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BNE R0, R15, byte_loop
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chunk16_loop:
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BEQ R0, R14, byte_loop
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MOVV (R6), R8
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MOVV (R7), R9
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BNE R8, R9, byte_loop
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MOVV 8(R6), R16
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MOVV 8(R7), R17
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ADDV $16, R6
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ADDV $16, R7
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SUBVU $1, R14
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BEQ R16, R17, chunk16_loop
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SUBV $8, R6
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SUBV $8, R7
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byte_loop:
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BEQ R6, R12, samebytes
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MOVBU (R6), R8
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ADDVU $1, R6
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MOVBU (R7), R9
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ADDVU $1, R7
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BEQ R8, R9, byte_loop
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byte_cmp:
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SGTU R8, R9, R12 // R12 = 1 if (R8 > R9)
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BNE R0, R12, ret
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MOVV $-1, R12
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JMP ret
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samebytes:
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SGTU R4, R5, R8
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SGTU R5, R4, R9
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SUBV R9, R8, R12
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ret:
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MOVV R12, (R13)
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RET
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@ -2,7 +2,7 @@
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build 386 || amd64 || s390x || arm || arm64 || ppc64 || ppc64le || mips || mipsle || wasm || mips64 || mips64le || riscv64
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//go:build 386 || amd64 || s390x || arm || arm64 || loong64 || ppc64 || ppc64le || mips || mipsle || wasm || mips64 || mips64le || riscv64
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package bytealg
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52
src/internal/bytealg/equal_loong64.s
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52
src/internal/bytealg/equal_loong64.s
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@ -0,0 +1,52 @@
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// Copyright 2022 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include "go_asm.h"
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#include "textflag.h"
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#define REGCTXT R29
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// memequal(a, b unsafe.Pointer, size uintptr) bool
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TEXT runtime·memequal(SB),NOSPLIT|NOFRAME,$0-25
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MOVV a+0(FP), R4
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MOVV b+8(FP), R5
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BEQ R4, R5, eq
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MOVV size+16(FP), R6
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ADDV R4, R6, R7
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loop:
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BNE R4, R7, test
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MOVV $1, R4
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MOVB R4, ret+24(FP)
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RET
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test:
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MOVBU (R4), R9
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ADDV $1, R4
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MOVBU (R5), R10
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ADDV $1, R5
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BEQ R9, R10, loop
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MOVB R0, ret+24(FP)
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RET
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eq:
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MOVV $1, R4
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MOVB R4, ret+24(FP)
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RET
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// memequal_varlen(a, b unsafe.Pointer) bool
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TEXT runtime·memequal_varlen(SB),NOSPLIT,$40-17
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MOVV a+0(FP), R4
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MOVV b+8(FP), R5
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BEQ R4, R5, eq
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MOVV 8(REGCTXT), R6 // compiler stores size at offset 8 in the closure
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MOVV R4, 8(R3)
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MOVV R5, 16(R3)
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MOVV R6, 24(R3)
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JAL runtime·memequal(SB)
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MOVBU 32(R3), R4
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MOVB R4, ret+16(FP)
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RET
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eq:
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MOVV $1, R4
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MOVB R4, ret+16(FP)
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RET
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@ -2,7 +2,7 @@
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build !386 && !amd64 && !s390x && !arm && !arm64 && !ppc64 && !ppc64le && !mips && !mipsle && !mips64 && !mips64le && !riscv64 && !wasm
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//go:build !386 && !amd64 && !s390x && !arm && !arm64 && !loong64 && !ppc64 && !ppc64le && !mips && !mipsle && !mips64 && !mips64le && !riscv64 && !wasm
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package bytealg
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52
src/internal/bytealg/indexbyte_loong64.s
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52
src/internal/bytealg/indexbyte_loong64.s
Normal file
@ -0,0 +1,52 @@
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// Copyright 2022 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include "go_asm.h"
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#include "textflag.h"
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TEXT ·IndexByte(SB),NOSPLIT,$0-40
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MOVV b_base+0(FP), R4
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MOVV b_len+8(FP), R5
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MOVBU c+24(FP), R6 // byte to find
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MOVV R4, R7 // store base for later
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ADDV R4, R5 // end
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ADDV $-1, R4
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loop:
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ADDV $1, R4
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BEQ R4, R5, notfound
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MOVBU (R4), R8
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BNE R6, R8, loop
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SUBV R7, R4 // remove base
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MOVV R4, ret+32(FP)
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RET
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notfound:
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MOVV $-1, R4
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MOVV R4, ret+32(FP)
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RET
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TEXT ·IndexByteString(SB),NOSPLIT,$0-32
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MOVV s_base+0(FP), R4
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MOVV s_len+8(FP), R5
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MOVBU c+16(FP), R6 // byte to find
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MOVV R4, R7 // store base for later
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ADDV R4, R5 // end
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ADDV $-1, R4
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loop:
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ADDV $1, R4
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BEQ R4, R5, notfound
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MOVBU (R4), R8
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BNE R6, R8, loop
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SUBV R7, R4 // remove base
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MOVV R4, ret+24(FP)
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RET
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notfound:
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MOVV $-1, R4
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MOVV R4, ret+24(FP)
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RET
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@ -2,7 +2,7 @@
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build 386 || amd64 || s390x || arm || arm64 || ppc64 || ppc64le || mips || mipsle || mips64 || mips64le || riscv64 || wasm
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//go:build 386 || amd64 || s390x || arm || arm64 || loong64 || ppc64 || ppc64le || mips || mipsle || mips64 || mips64le || riscv64 || wasm
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package bytealg
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