virtual void compile(X86Compiler& c)
{
c.newFunc(kX86FuncConvDefault, FuncBuilder3<Void, uint32_t*, const uint32_t*, size_t>());
c.getFunc()->setHint(kFuncHintNaked, true); // Omit unnecessary prolog/epilog.
Label L_Loop = c.newLabel(); // Create base labels we use
Label L_Exit = c.newLabel(); // in our function.
GpVar dst(c.getGpArg(0)); // Get reference to function
GpVar src(c.getGpArg(1)); // arguments.
GpVar cnt(c.getGpArg(2));
c.alloc(dst); // Allocate all registers now,
c.alloc(src); // because we want to keep them
c.alloc(cnt); // in physical registers only.
c.test(cnt, cnt); // Exit if length is zero.
c.jz(L_Exit);
c.bind(L_Loop); // Bind the loop label here.
GpVar tmp(c.newGpVar(kX86VarTypeGpd)); // Copy a single dword (4 bytes).
c.mov(tmp, dword_ptr(src));
c.mov(dword_ptr(dst), tmp);
c.add(src, 4); // Increment dst/src pointers.
c.add(dst, 4);
c.dec(cnt); // Loop until cnt isn't zero.
c.jnz(L_Loop);
c.bind(L_Exit); // Bind the exit label here.
c.endFunc(); // End of function.
}
virtual void compile(X86Compiler& c)
{
switch (_argsCount)
{
case 0: c.newFunc(kX86FuncConvDefault, FuncBuilder0<int>()); break;
case 1: c.newFunc(kX86FuncConvDefault, FuncBuilder1<int, int>()); break;
case 2: c.newFunc(kX86FuncConvDefault, FuncBuilder2<int, int, int>()); break;
case 3: c.newFunc(kX86FuncConvDefault, FuncBuilder3<int, int, int, int>()); break;
}
if (_naked ) c.getFunc()->setHint(kFuncHintNaked, true);
if (_pushPop) c.getFunc()->setHint(kX86FuncHintPushPop, true);
GpVar gvar(c.newGpVar());
XmmVar xvar(c.newXmmVar(kX86VarTypeXmm));
// Alloc, use and spill preserved registers.
if (_varsCount)
{
uint var = 0;
uint index = 0;
uint mask = 1;
uint preserved = c.getFunc()->getDecl()->getGpPreservedMask();
do {
if ((preserved & mask) != 0 && (index != kX86RegIndexEsp && index != kX86RegIndexEbp))
{
GpVar somevar(c.newGpVar(kX86VarTypeGpd));
c.alloc(somevar, index);
c.mov(somevar, imm(0));
c.spill(somevar);
var++;
}
index++;
mask <<= 1;
} while (var < _varsCount && index < kX86RegNumGp);
}
c.alloc(gvar, zax);
c.lea(gvar, xvar.m());
c.and_(gvar, imm(15));
c.ret(gvar);
c.endFunc();
}
