[英]Translate the following MIPS instructions into 32 bit instructions
I'm trying to translate the following MIPS instructions into 32 bit machine code (using Big-endian): 我正在尝试将以下MIPS指令转换为32位机器代码(使用Big-endian):
swc1 $f1 8($t0)
What I did was: 我所做的是:
111001 00001 01000 00001000
I'm only sure about the translation of swc1, but not the others. 我只知道swc1的翻译,而其他人则不确定。 I've googled a lot but couldn't find the number of $f1.
我在Google上搜索了很多,但找不到$ f1的数量。 I also read this thread: Link to a similar question However I'm still not sure if I should use 00001 for $f1.
我也阅读了该线程: 链接到类似的问题但是,我仍然不确定是否应该为$ f1使用00001。 As for the machine code of offset 8 and $t0, am I doing it right?
至于偏移量8和$ t0的机器代码,我做对了吗?
Since instructions are 32 bit, the machine code format has space for a 16 bit immediate, as follows: 由于指令是32位的,因此机器码格式具有立即16位的空间,如下所示:
111001 Rs[5] Ft[5] Offs[16]
(The numbers in brackets indicate bit counts.) (括号中的数字表示位数)。
Note that $t0
is register #8, and $f1
is indeed register #1. 注意
$t0
是寄存器#8,而$f1
实际上是寄存器#1。 As such your instruction is: 因此,您的指示是:
111001 01000 00001 0000000000001000
= 1110 0101 0000 0001 0000 0000 0000 1000 = E5 01 00 08
You can of course verify it using a trusted assembler: 您当然可以使用受信任的汇编程序来验证它:
1 0000 E5010008 swc1 $f1, 8($t0)
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