22 lines
1.1 KiB
ArmAsm
22 lines
1.1 KiB
ArmAsm
%default {"preinstr":""}
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/*
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* Generic 64-bit unary operation. Provide an "instr" line that
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* specifies an instruction that performs "result = op r0/r1".
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* This could be an ARM instruction or a function call.
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*
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* For: neg-long, not-long, neg-double, long-to-double, double-to-long
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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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ubfx rINST, rINST, #8, #4 @ rINST<- A
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VREG_INDEX_TO_ADDR r3, r3 @ r3<- &fp[B]
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VREG_INDEX_TO_ADDR r9, rINST @ r9<- &fp[A]
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ldmia r3, {r0-r1} @ r0/r1<- vAA
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CLEAR_SHADOW_PAIR rINST, ip, lr @ Zero shadow regs
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FETCH_ADVANCE_INST 1 @ advance rPC, load rINST
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$preinstr @ optional op; may set condition codes
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$instr @ r0/r1<- op, r2-r3 changed
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GET_INST_OPCODE ip @ extract opcode from rINST
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stmia r9, {r0-r1} @ vAA<- r0/r1
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GOTO_OPCODE ip @ jump to next instruction
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/* 10-11 instructions */
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