21 lines
1 KiB
ArmAsm
21 lines
1 KiB
ArmAsm
%default {"preinstr":""}
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/*
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* Generic 32bit-to-64bit unary operation. Provide an "instr" line
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* that specifies an instruction that performs "result = op r0", where
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* "result" is a 64-bit quantity in r0/r1.
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*
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* For: int-to-long, int-to-double, float-to-long, float-to-double
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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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GET_VREG r0, r3 @ r0<- vB
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VREG_INDEX_TO_ADDR r9, rINST @ r9<- &fp[A]
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$preinstr @ optional op; may set condition codes
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CLEAR_SHADOW_PAIR rINST, ip, lr @ Zero shadow regs
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FETCH_ADVANCE_INST 1 @ advance rPC, load rINST
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$instr @ r0<- op, r0-r3 changed
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GET_INST_OPCODE ip @ extract opcode from rINST
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stmia r9, {r0-r1} @ vA/vA+1<- r0/r1
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GOTO_OPCODE ip @ jump to next instruction
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/* 9-10 instructions */
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