23 lines
1.1 KiB
ArmAsm
23 lines
1.1 KiB
ArmAsm
/*
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* Generic 64-bit double-precision floating point binary operation.
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* Provide an "instr" line that specifies an instruction that performs
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* "d2 = d0 op d1".
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*
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* for: add-double, sub-double, mul-double, div-double
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*/
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/* doubleop vAA, vBB, vCC */
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FETCH r0, 1 @ r0<- CCBB
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mov r9, rINST, lsr #8 @ r9<- AA
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mov r3, r0, lsr #8 @ r3<- CC
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and r2, r0, #255 @ r2<- BB
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VREG_INDEX_TO_ADDR r3, r3 @ r3<- &vCC
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VREG_INDEX_TO_ADDR r2, r2 @ r2<- &vBB
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fldd d1, [r3] @ d1<- vCC
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fldd d0, [r2] @ d0<- vBB
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FETCH_ADVANCE_INST 2 @ advance rPC, load rINST
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$instr @ s2<- op
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CLEAR_SHADOW_PAIR r9, ip, lr @ Zero shadow regs
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GET_INST_OPCODE ip @ extract opcode from rINST
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VREG_INDEX_TO_ADDR r9, r9 @ r9<- &vAA
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fstd d2, [r9] @ vAA<- d2
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GOTO_OPCODE ip @ jump to next instruction
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