If I use register names I get:
Error: illegal operands `add $t0,$zero,$zero'
If I use register number ($8 instead of $t0 and $0 instead of $zero) it works.
(I'm using binutils 2.17).
From stackoverflow
-
The GNU assembler doesn't support symbolic register names directly. A common approach, if using gcc to drive the assembler, is to use the ".S" extension for the assembler source file (which tells gcc to pass the source through the C preprocessor before the assembler) and #include a header file containing definitions like:
#define zero $0 #define v0 $2 #define v1 $3
Then the assembler source can have statements like
add v0, zero, zero
Matthew Slattery : Minor quibble: `v0` and `v1` are `$2` and `$3` (`$1` is `at`)!Lance Richardson : You're right - that's what I get for trusting my memory, will correct. -
Note: the symbolic names are supported in binutils 2.18 onwards.
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