gistfile1.txt

            OP(sp_get_i64):
                GET_REG(cur_op, 0).i64 = *((MVMint64 *)((char *)GET_REG(cur_op, 2).o + GET_UI16(cur_op, 4)));
                cur_op += 6;
                goto NEXT;
            OP(sp_get_n):
                GET_REG(cur_op, 0).n64 = *((MVMnum64 *)((char *)GET_REG(cur_op, 2).o + GET_UI16(cur_op, 4)));
                cur_op += 6;
                goto NEXT;
            OP(sp_bind_i64): {
                MVMObject *o     = GET_REG(cur_op, 0).o;
                *((MVMint64 *)((char *)o + GET_UI16(cur_op, 2))) = GET_REG(cur_op, 4).i64;
                cur_op += 6;
                goto NEXT;
            }
            OP(sp_bind_n): {
                MVMObject *o     = GET_REG(cur_op, 0).o;
                *((MVMnum64 *)((char *)o + GET_UI16(cur_op, 2))) = GET_REG(cur_op, 4).n64;
                cur_op += 6;
                goto NEXT;
            }
/* ... */
            OP(sp_deref_get_i64): {
                MVMObject *o     = GET_REG(cur_op, 2).o;
                MVMint64 **target = ((MVMint64 **)((char *)o + GET_UI16(cur_op, 4)));
                GET_REG(cur_op, 0).i64 = **target;
                cur_op += 6;
                goto NEXT;
            }
            OP(sp_deref_get_n): {
                MVMObject *o     = GET_REG(cur_op, 2).o;
                MVMnum64 **target = ((MVMnum64 **)((char *)o + GET_UI16(cur_op, 4)));
                GET_REG(cur_op, 0).n64 = **target;
                cur_op += 6;
                goto NEXT;
            }
            OP(sp_deref_bind_i64): {
                MVMObject *o      = GET_REG(cur_op, 0).o;
                MVMint64 **target = ((MVMint64 **)((char *)o + GET_UI16(cur_op, 4)));
                target            = GET_REG(cur_op, 2).i64;
                cur_op += 6;
                goto NEXT;
            }
            OP(sp_deref_bind_n): {
                MVMObject *o      = GET_REG(cur_op, 0).o;
                MVMnum64 **target = ((MVMnum64 *)((char *)o + GET_UI16(cur_op, 4)));
                target            = GET_REG(cur_op, 2).n64;
                cur_op += 6;
                goto NEXT;
            }

gistfile2.txt

/* An example for sp_deref_bind_i64 is like this:

    MVMNativeRef *target_obj;
    sp_deref_bind_n(target_obj, 100, offsetof(MVMNativeRef, body.u.reg_or_lex));
*/

struct MVMNativeRefBody {
    union {
        struct {
            MVMFrame *frame;
            MVMRegister *var;
            MVMuint16 type;
        } reg_or_lex;
        struct {
            MVMObject *obj;
            MVMObject *class_handle;
            MVMString *name;
        } attribute;
        struct {
            MVMObject *obj;
            MVMint64 idx;
        } positional;
    } u;
};
struct MVMNativeRef {
    MVMObject common;
    MVMNativeRefBody body;
};