mirror of
https://github.com/fumiama/go-base16384.git
synced 2026-06-05 00:32:52 +08:00
finish arm64 encode
This commit is contained in:
源文雨
@@ -118,7 +118,7 @@ encsav:
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ADDQ CX, DX
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SHLQ $3, SI
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MOVQ DX, ·sum+64(FP)
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MOVQ SI, ·sum+72(FP)
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MOVQ SI, ·n+72(FP)
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encend:
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RET
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45
base14_arm64.go
Normal file
45
base14_arm64.go
Normal file
@@ -0,0 +1,45 @@
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//go:build arm64
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// +build arm64
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package base14
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import (
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"encoding/binary"
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"unsafe"
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)
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//go:noescape
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//go:nosplit
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func _encode(offset, outlen int, b, encd []byte) (sum uint64, valn uintptr)
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//go:noescape
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//go:nosplit
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func _decode(offset, outlen int, b, decd []byte)
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func encode(offset, outlen int, b, encd []byte) {
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if len(b) == 7 {
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b = append(b, 0)
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}
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sum, valn := _encode(offset, outlen, b, encd)
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if offset == 0 {
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return
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}
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n := valn - (uintptr)(*(*unsafe.Pointer)(unsafe.Pointer(&encd)))
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println(sum, n)
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var tmp [4]byte
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binary.LittleEndian.PutUint32(tmp[:], uint32(sum))
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copy(encd[n:], tmp[:])
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encd[outlen-2] = '='
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encd[outlen-1] = byte(offset)
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}
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func decode(offset, outlen int, b, decd []byte) {
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/*
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if offset != 0 && cap(b) == len(b) {
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b = append(b, make([]byte, 8)...)
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}
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_decode(offset, outlen, b, decd)
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*/
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decodeGeneric(offset, outlen, b, decd)
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}
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123
base14_arm64.s
Normal file
123
base14_arm64.s
Normal file
@@ -0,0 +1,123 @@
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//go:build arm64
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// +build arm64
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#include "textflag.h"
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// func _encode(offset, outlen int, b, encd []byte) (sum uint64, &vals[n] uintptr)
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TEXT ·_encode(SB), NOSPLIT, $0-81
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MOVD ·offset+0(FP), R0
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MOVD ·data+16(FP), R9
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MOVD ·dlen+24(FP), R3
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MOVD ·encd+40(FP), R5
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SUBW $6, R3, R3
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CMPW $0, R3
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BLE enctil
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MOVW $0x4e00, R11
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SUB $8, R5, R14
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SUB $4, R5, R13
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MOVD $2, R8
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MOVW $0, R10 // int32_t i = 0
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MOVK $(0x4e00<<16), R11
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enclop:
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MOVW (R9), R4
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ADDW $7, R10, R10
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MOVW R8, R12
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CMPW R3, R10
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REVW R4, R4
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ADD $7, R9, R9
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LSRW $2, R4, R6
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UBFX $4, R4, $14, R15
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ANDW $0x3fff0000, R6, R6
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UBFIZW $26, R4, $4, R7
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ORRW R15, R6, R6
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ADDW R11, R6, R6
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REVW R6, R6
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MOVW R6, (R14)(R8<<2)
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MOVW -3(R9), R4
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REVW R4, R4
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LSRW $6, R4, R4
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ANDW $0x3fffffc, R4, R4
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ORRW R7, R4, R4
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ANDW $0x3fff0000, R4, R6
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UBFX $2, R4, $14, R4
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ORRW R6, R4, R4
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ADDW R11, R4, R4
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REVW R4, R4
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MOVW R4, (R13)(R8<<2)
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ADDW $2, R8, R8
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BLT enclop
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encrem:
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ANDSW $0xff, R0, R0
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BEQ encret
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MOVBU (R2)(R10.SXTW), R3
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UXTW R12, R8
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CMPW $1, R0
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SXTW R10, R10
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ADD R8<<2, R5, R7
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UBFIZW $14, R3, $2, R4
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ORRW R3>>2, R4, R3
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BEQ encsum
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ADD R10, R2, R9
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CMPW $2, R0
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MOVBU 1(R9), R6
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LSLW $6, R6, R4
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UBFIZW $20, R6, $2, R6
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ANDW $0x3f00, R4, R4
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ORRW R3, R4, R3
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ORRW R3, R6, R3
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BEQ encsum
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MOVBU 2(R9), R4
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CMPW $3, R0
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LSLW $12, R4, R6
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ANDW $0xf0000, R6, R6
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ORRW R4<<28, R6, R4
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ORRW R4, R3, R3
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BEQ encsum
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ADD $3, R10, R10
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ADDW $1, R12, R12
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CMPW $4, R0
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ADD R12<<2, R5, R7
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MOVBU (R2)(R10), R4
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LSLW $20, R4, R4
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ANDW $0xf000000, R4, R4
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ORRW R3, R4, R3
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ADDW $0x4e0000, R3, R3
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ADDW $78, R3, R3
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MOVW R3, (R5)(R8<<2)
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MOVBU (R2)(R10), R3
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UBFIZW $2, R3, $4, R3
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BEQ encsum
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MOVBU 4(R9), R4
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CMPW $5, R0
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UBFIZW $10, R4, $6, R2
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ORRW R3, R2, R3
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ORRW R4>>6, R3, R3
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BEQ encsum
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MOVBU 5(R9), R4
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LSLW $2, R4, R2
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UBFIZW $16, R4, $6, R4
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ANDW $0x300, R2, R2
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ORRW R4, R2, R2
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ORRW R2, R3, R3
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encsum:
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ADDW $0x4e0000, R3, R3
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ADDW $0x4e, R3, R3
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MOVD R3, ·sum+64(FP)
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MOVD R7, ·n+72(FP)
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encret:
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RET
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enctil:
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MOVW $0, R10
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MOVW $0, R12
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JMP encrem
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// func _decode(offset, outlen int, b, decd []byte)
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TEXT ·_decode(SB), NOSPLIT, $0-64
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@@ -1,5 +1,5 @@
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//go:build !amd64
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// +build !amd64
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//go:build !amd64 && !arm64
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// +build !amd64,!arm64
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package base14
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106
c/base1432.c
Normal file
106
c/base1432.c
Normal file
@@ -0,0 +1,106 @@
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#ifdef __cosmopolitan // always le
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# define be16toh(x) bswap_16(x)
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# define be32toh(x) bswap_32(x)
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# define htobe16(x) bswap_16(x)
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# define htobe32(x) bswap_32(x)
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#else
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#ifdef __linux__
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# include <endian.h>
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#endif
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#ifdef __FreeBSD__
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# include <sys/endian.h>
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#endif
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#ifdef __NetBSD__
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# include <sys/endian.h>
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#endif
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#ifdef __OpenBSD__
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# include <sys/types.h>
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# define be16toh(x) betoh16(x)
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# define be32toh(x) betoh32(x)
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#endif
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#ifdef __MAC_10_0
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# define be16toh(x) ntohs(x)
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# define be32toh(x) ntohl(x)
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# define htobe16(x) ntohs(x)
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# define htobe32(x) htonl(x)
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#endif
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#ifdef _WIN32
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#ifdef WORDS_BIGENDIAN
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# define be16toh(x) (x)
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# define be32toh(x) (x)
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# define htobe16(x) (x)
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# define htobe32(x) (x)
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#else
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# define be16toh(x) _byteswap_ushort(x)
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# define be32toh(x) _byteswap_ulong(x)
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# define htobe16(x) _byteswap_ushort(x)
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# define htobe32(x) _byteswap_ulong(x)
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#endif
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#endif
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#endif
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int base16384_encode(int offset, int outlen, const char* data, int dlen, int dcap, char* buf, int blen, int bcap) {
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uint32_t* vals = (uint32_t*)buf;
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uint32_t n = 0;
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int32_t i = 0;
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for(; i <= dlen - 7; i += 7) {
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register uint32_t sum = 0;
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register uint32_t shift = htobe32(*(uint32_t*)(data+i));
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sum |= (shift>>2) & 0x3fff0000;
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sum |= (shift>>4) & 0x00003fff;
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sum += 0x4e004e00;
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vals[n++] = be32toh(sum);
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shift <<= 26;
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shift &= 0x3c000000;
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sum = 0;
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shift |= (htobe32(*(uint32_t*)(data+i+4))>>6)&0x03fffffc;
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sum |= shift & 0x3fff0000;
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shift >>= 2;
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sum |= shift & 0x00003fff;
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sum += 0x4e004e00;
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vals[n++] = be32toh(sum);
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}
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uint8_t o = offset;
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if(o--) {
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register uint32_t sum = 0x0000003f & (data[i] >> 2);
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sum |= ((uint32_t)data[i] << 14) & 0x0000c000;
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if(o--) {
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sum |= ((uint32_t)data[i + 1] << 6) & 0x00003f00;
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sum |= ((uint32_t)data[i + 1] << 20) & 0x00300000;
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if(o--) {
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sum |= ((uint32_t)data[i + 2] << 12) & 0x000f0000;
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sum |= ((uint32_t)data[i + 2] << 28) & 0xf0000000;
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if(o--) {
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sum |= ((uint32_t)data[i + 3] << 20) & 0x0f000000;
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sum += 0x004e004e;
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#ifdef WORDS_BIGENDIAN
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vals[n++] = __builtin_bswap32(sum);
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#else
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vals[n++] = sum;
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#endif
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sum = (((uint32_t)data[i + 3] << 2)) & 0x0000003c;
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if(o--) {
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sum |= (((uint32_t)data[i + 4] >> 6)) & 0x00000003;
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sum |= ((uint32_t)data[i + 4] << 10) & 0x0000fc00;
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if(o--) {
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sum |= ((uint32_t)data[i + 5] << 2) & 0x00000300;
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sum |= ((uint32_t)data[i + 5] << 16) & 0x003f0000;
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}
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}
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}
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}
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}
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sum += 0x004e004e;
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#ifdef WORDS_BIGENDIAN
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vals[n] = __builtin_bswap32(sum);
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#else
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vals[n] = sum;
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#endif
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buf[outlen - 2] = '=';
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buf[outlen - 1] = offset;
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}
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return outlen;
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}
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