+void SparcAsmParser::expandSET(MCInst &Inst, SMLoc IDLoc,
+ SmallVectorImpl<MCInst> &Instructions) {
+ MCOperand MCRegOp = Inst.getOperand(0);
+ MCOperand MCValOp = Inst.getOperand(1);
+ assert(MCRegOp.isReg());
+ assert(MCValOp.isImm() || MCValOp.isExpr());
+
+ // the imm operand can be either an expression or an immediate.
+ bool IsImm = Inst.getOperand(1).isImm();
+ int64_t RawImmValue = IsImm ? MCValOp.getImm() : 0;
+
+ // Allow either a signed or unsigned 32-bit immediate.
+ if (RawImmValue < -2147483648LL || RawImmValue > 4294967295LL) {
+ Error(IDLoc, "set: argument must be between -2147483648 and 4294967295");
+ return;
+ }
+
+ // If the value was expressed as a large unsigned number, that's ok.
+ // We want to see if it "looks like" a small signed number.
+ int32_t ImmValue = RawImmValue;
+ // For 'set' you can't use 'or' with a negative operand on V9 because
+ // that would splat the sign bit across the upper half of the destination
+ // register, whereas 'set' is defined to zero the high 32 bits.
+ bool IsEffectivelyImm13 =
+ IsImm && ((is64Bit() ? 0 : -4096) <= ImmValue && ImmValue < 4096);
+ const MCExpr *ValExpr;
+ if (IsImm)
+ ValExpr = MCConstantExpr::create(ImmValue, getContext());
+ else
+ ValExpr = MCValOp.getExpr();
+
+ MCOperand PrevReg = MCOperand::createReg(Sparc::G0);
+
+ // If not just a signed imm13 value, then either we use a 'sethi' with a
+ // following 'or', or a 'sethi' by itself if there are no more 1 bits.
+ // In either case, start with the 'sethi'.
+ if (!IsEffectivelyImm13) {
+ MCInst TmpInst;
+ const MCExpr *Expr = adjustPICRelocation(SparcMCExpr::VK_Sparc_HI, ValExpr);
+ TmpInst.setLoc(IDLoc);
+ TmpInst.setOpcode(SP::SETHIi);
+ TmpInst.addOperand(MCRegOp);
+ TmpInst.addOperand(MCOperand::createExpr(Expr));
+ Instructions.push_back(TmpInst);
+ PrevReg = MCRegOp;
+ }
+
+ // The low bits require touching in 3 cases:
+ // * A non-immediate value will always require both instructions.
+ // * An effectively imm13 value needs only an 'or' instruction.
+ // * Otherwise, an immediate that is not effectively imm13 requires the
+ // 'or' only if bits remain after clearing the 22 bits that 'sethi' set.
+ // If the low bits are known zeros, there's nothing to do.
+ // In the second case, and only in that case, must we NOT clear
+ // bits of the immediate value via the %lo() assembler function.
+ // Note also, the 'or' instruction doesn't mind a large value in the case
+ // where the operand to 'set' was 0xFFFFFzzz - it does exactly what you mean.
+ if (!IsImm || IsEffectivelyImm13 || (ImmValue & 0x3ff)) {
+ MCInst TmpInst;
+ const MCExpr *Expr;
+ if (IsEffectivelyImm13)
+ Expr = ValExpr;
+ else
+ Expr = adjustPICRelocation(SparcMCExpr::VK_Sparc_LO, ValExpr);
+ TmpInst.setLoc(IDLoc);
+ TmpInst.setOpcode(SP::ORri);
+ TmpInst.addOperand(MCRegOp);
+ TmpInst.addOperand(PrevReg);
+ TmpInst.addOperand(MCOperand::createExpr(Expr));
+ Instructions.push_back(TmpInst);
+ }
+}
+
+bool SparcAsmParser::MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
+ OperandVector &Operands,
+ MCStreamer &Out,
+ uint64_t &ErrorInfo,
+ bool MatchingInlineAsm) {