Syntax for the .save.x Directives

The directives, .save.f, .save.g, .save.gf, and .save.b, define 2-bit fields for each save operation in the imask descriptor. The assembler

interprets the instruction that immediately follows a save directive as a save instruction.

Example Code Sequence Using the .save.g Directive illustrates the use of the .save.g directive. Each .save.g directive describes the subsequent store instruction. The operand is a mask where only one bit is set. This bit specifies the preserved saved register. The assembler produces a gr_mem descriptor with a 0x5 mask. In addition, the assembler marks the 2-bit fields of the imask descriptor, corresponding to the slots of the two store instructions.

Example Code Sequence Using the .save.gf Directive illustrates the use of the .save.gf directive. The .save.gf directive describes the subsequent store instruction. The operands is a mask where only one bit is set. This bit specifies the preserved saved register. The assembler produces a frgr_mem descriptor with a 0x42 mask for the floating-point registers and a 0x2 mask for the general-purpose registers. In addition, the assembler marks the 2-bit fields of the imask descriptor, corresponding to the slots of the three store instructions.