17 lines
778 B
ArmAsm
17 lines
778 B
ArmAsm
/*
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* Generic 32-bit unary floating-point operation. Provide an "instr"
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* line that specifies an instruction that performs "s1 = op s0".
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*
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* for: int-to-float, float-to-int
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*/
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/* unop vA, vB */
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mov r3, rINST, lsr #12 @ r3<- B
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VREG_INDEX_TO_ADDR r3, r3 @ r3<- &vB
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flds s0, [r3] @ s0<- vB
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ubfx r9, rINST, #8, #4 @ r9<- A
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FETCH_ADVANCE_INST 1 @ advance rPC, load rINST
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$instr @ s1<- op
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GET_INST_OPCODE ip @ extract opcode from rINST
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VREG_INDEX_TO_ADDR r9, r9 @ r9<- &vA
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fsts s1, [r9] @ vA<- s1
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GOTO_OPCODE ip @ jump to next instruction
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