20 lines
953 B
ArmAsm
20 lines
953 B
ArmAsm
%default {"preinstr":""}
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/*
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* Generic 32-bit unary operation. Provide an "instr" line that
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* specifies an instruction that performs "result = op r0".
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* This could be an ARM instruction or a function call.
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*
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* for: neg-int, not-int, neg-float, int-to-float, float-to-int,
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* int-to-byte, int-to-char, int-to-short
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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 r9, rINST, #8, #4 @ r9<- A
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GET_VREG r0, r3 @ r0<- vB
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$preinstr @ optional op; may set condition codes
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FETCH_ADVANCE_INST 1 @ advance rPC, load rINST
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$instr @ r0<- op, r0-r3 changed
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GET_INST_OPCODE ip @ extract opcode from rINST
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SET_VREG r0, r9 @ vAA<- r0
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GOTO_OPCODE ip @ jump to next instruction
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/* 8-9 instructions */
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