命令セット

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命令セット - (2007/03/06 (火) 00:46:37) のソース

**擬似命令
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3/06追加命令
|[111111](31-26)|andi rd rt Imm|rd = rt & Imm|
|[011001](31-26)|in   rd|外部からの入力|
|[011010](31-26)|outb rs|出力(Byte)|
|[011100](31-26)|outw rs|出力(4Byte)|
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|move rd rs|add rd rs r0|
|neg rd rs|sub rd r0 rs| 
以下3/03廃止
|li   rd Imm|llo rd Lo(Imm)|
||lhi rd Hi(Imm)|
|ll   label|llo rd Lo(Address[label])|
||lhi rd Hi(Address[label])|
**命令
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|ビット表現|アセンブリ|実行内容|
3/03追加(lhi,llo)
|[011110](31-26)|lhi rd Imm|Hi(rd) = Imm|
|[011111](31-26)|llo rd Imm|Lo(rd) = Imm|
3/03追加
|[101111]|fneg rd rs|rd = -.rs|

|000001(31-26) rs(25-21) rt(20-16) rd(15-11)|add  rd rs rt|rd = rs + rt|
|000010(31-26) rs(25-21) rt(20-16) Imm(15-0)|addi rt rs Imm|rt = rs + Imm|
|[001110]|sub  rd rs rt|rd = rs - rt|
|[001111]|subi rd rs Imm|rd = rs - Imm|
||mov|rd = rs(addi)|
|[010000](31-26) rs(25-21) rd(20-16) Imm(15-0) |slli rd rs Imm|rd = rs << Imm|
|[010001](31-26) rs(25-21) rd(20-21) Imm(15-0)|lw   rs Imm(rd)|rs = mem[rd + Imm](修正しました)|
|[010010](31-26) rs(25-21) rd(20-16) Imm(15-0)|sw   rs Imm(rd)|mem[rd + Imm] = rs|
|[100001](31-26) rs(25-21) rt(20-16) rd(15-11)|fadd rd rs rt|rd = rs + rt|
|[100010] [100011] [100100]|fsub fmul fdiv||
||fmov rd rs|rd = rs(結局movと同じ？)|
|001101(31-26)|jr|pc = ra|
|001100(31-26) target(19-0)|jall target|ra = [pc+1]; pc = target|(jalとjallを入れ替えた！？)
|[010011](31-26) (25-21)|jal rs|pc = rs|
|000111(31-26) rs(25-21) rt(20-16)|cmp  rs rt|cr = cond[rs - rt]|
|[010100](31-26) rs(25-21) Imm(15-0)|cmpi rs Imm|cr = cond[rs - Imm]|
|000100(31-26) target(19-0)|jl target|pc = target|
|[010101](31-26) rs(25-21)|j   rs|pc = rs|
|001000(31-26) target(19-0)|be   target|(if [cr = Equal]) pc = target|
|001011(31-26) target(19-0)|bne  target|...|
|001001(31-26) target(19-0)|bg target|...|
|001010(31-26) target(19-0)|bl target|...|
|[010110](31-26) target(19-0)|ble target |...|
|[010111](31-26) target(19-0)|bge target|...|
|[100101](31-26) rs(25-21) rt(20-16)|fcmp rs rt|cr = cond[rs - rt]|
|[100110](31-26) target(19-0)|fble target||
|[100111] [101000] [101001]|fbg fbe fbne||
||nop|ｲﾗﾈ|
|000101(31-26) rd(25-21)|led  rd|ﾋﾟｶｰｿ|
|000110(31-26)|STOP||

2/27追加
|jmp(31-26) rd(25-21)|jmp  rd|pc = [rd] レジスタを引数に取るジャンプ|
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**ライブラリ用命令
|[011000](31-26) rd(25-21)|dec  rd|rd--|
|[101010](31-26) rd(25-21) rs(20-16)|ftoi rd rs||
|[101011](31-26) rd(25-21) rs(20-16)|itof rd rs||
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**sparcだとプリミティブな命令
putchar
printf
fprintf
fputc
scanf
cos
sin
atan
floor
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