HP(ﾟ∀ﾟ) > KAIZO（´∀｀) > KAISEKI(^ｗ^） > ASM(・∀・)

SJISてきすとをEUCに変換する

//convertsjis2euc
la	t0,sjis
la	t1,euc
ori	t2,zr,0x8E	#8E,SS1
loop:
lbu	t4,0x0(t0)	#c1
lbu	t5,0x1(t0)	#c2
beq	t4,zr,NULLowata
xori	t6,t4,0x20	#sjis判定
addiu	t7,t6,0x5F
andi	t8,t7,0xFF
sltiu	at,t8,0x3C
beq	at,zr,1byte
sll	t7,t6,1	#c1処理
addiu	t4,t7,-0x121
sltiu	at,t5,0x9F	#c2,9F以上c1++
beql	at,zr,+2
addiu	t4,t4,1
andi	at,t4,1	#c1奇数
beql	at,zr,c2処理
addiu	t5,t5,-0x7E	#c2,-=0x7e
andi	at,t5,0x80
beql	at,zr,+2
addiu	t5,t5,1	#c2,-0x1F
addiu	t5,t5,-0x20	#c2,-=0x20
c2処理:
ori	t4,t4,0x80	#jis2euc
ori	t5,t5,0x80
sb	t4,0(t1)
sb	t5,1(t1)
addiu	t0,t0,2
beq	zr,zr,loop
addiu	t1,t1,2
1byte:
sltiu	at,t4,0xA1	#半角カナ
bne	at,zr,ascii
sb	t2,0(t1)
sb	t4,1(t1)
addiu	t0,t0,1
beq	zr,zr,loop
addiu	t1,t1,2
ascii:
sb	t4,0(t1)
addiu	t0,t0,1
beq	zr,zr,loop
addiu	t1,t1,1
NULLowata:
jr	ra
setpc	0x1100
sjis:
.string932	A｡ｱ亜唖娃阿哀愛挨姶逢葵茜穐悪握渥旭葦芦鯵梓圧斡扱宛姐虻飴絢綾鮎或粟袷安庵按暗案闇鞍杏以伊位依偉囲夷委威尉惟意慰易椅為畏異移維緯胃萎衣謂違遺医井亥域育郁磯一壱溢逸稲茨芋鰯允印咽員因姻引飲淫胤蔭院陰隠韻吋右宇烏羽迂雨卯鵜窺丑碓
setpc	0x1200
euc:
setpc	0x1300
.string51932	A｡ｱ亜唖娃阿哀愛挨姶逢葵茜穐悪握渥旭葦芦鯵梓圧斡扱宛姐虻飴絢綾鮎或粟袷安庵按暗案闇鞍杏以伊位依偉囲夷委威尉惟意慰易椅為畏異移維緯胃萎衣謂違遺医井亥域育郁磯一壱溢逸稲茨芋鰯允印咽員因姻引飲淫胤蔭院陰隠韻吋右宇烏羽迂雨卯鵜窺丑碓

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