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More av insns: vmaddfp, vnmsubfp

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Rough 'n ready IR used - results will be rounded along the way, not just at the end of the calculations, giving some error.




git-svn-id: svn://svn.valgrind.org/vex/trunk@1457
This commit is contained in:
Cerion Armour-Brown
2005-11-14 02:37:44 +00:00
parent 34080ba454
commit 7925e4424f
1 changed files with 13 additions and 5 deletions
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18
VEX/priv/guest-ppc32/toIR.c
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@@ -6806,13 +6806,21 @@ static Bool dis_av_fp_arith ( UInt theInstr )
switch (opc2) {
case 0x2E: // vmaddfp (Multiply Add FP, AV p177)
DIP("vmaddfp v%d,v%d,v%d,v%d\n", vD_addr, vA_addr, vC_addr, vB_addr);
DIP(" => not implemented\n");
return False;
putVReg( vD_addr, binop(Iop_Add32Fx4, mkexpr(vB),
binop(Iop_Mul32Fx4, mkexpr(vA), mkexpr(vC))) );
return True;
case 0x2F: // vnmsubfp (Negative Multiply-Subtract FP, AV p215)
case 0x2F: { // vnmsubfp (Negative Multiply-Subtract FP, AV p215)
IRTemp zeros = newTemp(Ity_V128);
DIP("vnmsubfp v%d,v%d,v%d,v%d\n", vD_addr, vA_addr, vC_addr, vB_addr);
DIP(" => not implemented\n");
return False;
assign( zeros, unop(Iop_Dup32x4, mkU32(0)) );
putVReg( vD_addr,
binop(Iop_Sub32Fx4, mkexpr(zeros),
binop(Iop_Sub32Fx4,
binop(Iop_Mul32Fx4, mkexpr(vA), mkexpr(vC)),
mkexpr(vB))) );
return True;
}
default:
break; // Fall through...