Assembler Directives

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Assembler directives provide information to the assembler (SPIM supports a subset of the MIPS assembler directives). The first character is always a dot.

.ascii str

store ASCII value of str in memory without a null terminator.

.asciiz str

store ASCII value or str in memory with a null terminator.

.byte b_1_, b_2_, ..., b_n_

store the n values in successive bytes of memory.

.half h_1_, h_2_, ..., h_n_

store the n 16-bit quantities in successive half words. Must be aligned on halfword boundaries.

.word w_1_, w_2_, ..., w_n_

store the n 32-bit quantities in successive words. Must be aligned on word boundaries.

.space n

allocates n bytes of memory. (SPIM: Must be in the data segment).

.text

flags the beginning of the text or executable section.

.data

flags the beginning of the data segment.

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