void*
mono_gc_make_descr_from_bitmap (gsize *bitmap, int numbits)
{
/* It seems there are issues when the bitmap doesn't fit: play it safe */
if (numbits >= 30)
return GC_NO_DESCRIPTOR;
else
return (gpointer)GC_make_descriptor ((GC_bitmap)bitmap, numbits);
}
void BuildPrefixGCDescriptor(unsigned prefix_len)
{
if (prefix_len) {
GC_word bits[1] = { 0 };
unsigned i;
const UInt wordsInBagHeader = sizeof(BagHeader) / sizeof(Bag);
for (i = 0; i < prefix_len; i++)
GC_set_bit(bits, (i + wordsInBagHeader));
GCDesc[prefix_len] =
GC_make_descriptor(bits, prefix_len + wordsInBagHeader);
GC_set_bit(bits, 0);
GCMDesc[prefix_len] =
GC_make_descriptor(bits, prefix_len + wordsInBagHeader);
}
else {
GCDesc[prefix_len] = GC_DS_LENGTH;
GCMDesc[prefix_len] = GC_DS_LENGTH | sizeof(void *);
}
GCKind[prefix_len] =
GC_new_kind(GC_new_free_list(), GCDesc[prefix_len], 0, 1);
GCMKind[prefix_len] =
GC_new_kind(GC_new_free_list(), GCMDesc[prefix_len], 0, 0);
}
ILNativeInt ILGCCreateTypeDescriptor(ILNativeUInt bitmap[], ILNativeUInt len)
{
return (ILNativeInt)GC_make_descriptor((GC_bitmap)bitmap, (size_t)len);
}
