static void genMulLong(CompilationUnit *cUnit, RegLocation rlDest,
RegLocation rlSrc1, RegLocation rlSrc2)
{
RegLocation rlResult;
loadValueDirectWideFixed(cUnit, rlSrc1, r0, r1);
loadValueDirectWideFixed(cUnit, rlSrc2, r2, r3);
genDispatchToHandler(cUnit, TEMPLATE_MUL_LONG);
rlResult = dvmCompilerGetReturnWide(cUnit);
storeValueWide(cUnit, rlDest, rlResult);
}
/*
* To avoid possible conflicts, we use a lot of temps here. Note that
* our usage of Thumb2 instruction forms avoids the problems with register
* reuse for multiply instructions prior to arm6.
*/
static void genMulLong(CompilationUnit *cUnit, RegLocation rlDest,
RegLocation rlSrc1, RegLocation rlSrc2)
{
RegLocation rlResult;
int resLo = dvmCompilerAllocTemp(cUnit);
int resHi = dvmCompilerAllocTemp(cUnit);
int tmp1 = dvmCompilerAllocTemp(cUnit);
rlSrc1 = loadValueWide(cUnit, rlSrc1, kCoreReg);
rlSrc2 = loadValueWide(cUnit, rlSrc2, kCoreReg);
newLIR3(cUnit, kThumb2MulRRR, tmp1, rlSrc2.lowReg, rlSrc1.highReg);
newLIR4(cUnit, kThumb2Umull, resLo, resHi, rlSrc2.lowReg, rlSrc1.lowReg);
newLIR4(cUnit, kThumb2Mla, tmp1, rlSrc1.lowReg, rlSrc2.highReg, tmp1);
newLIR4(cUnit, kThumb2AddRRR, resHi, tmp1, resHi, 0);
dvmCompilerFreeTemp(cUnit, tmp1);
rlResult = dvmCompilerGetReturnWide(cUnit); // Just as a template, will patch
rlResult.lowReg = resLo;
rlResult.highReg = resHi;
storeValueWide(cUnit, rlDest, rlResult);
}
