TValue * LJ_FASTCALL lj_meta_equal_cd(lua_State *L, BCIns ins)
{
ASMFunction cont = (bc_op(ins) & 1) ? lj_cont_condf : lj_cont_condt;
int op = (int)bc_op(ins) & ~1;
TValue tv;
cTValue *mo, *o2, *o1 = &L->base[bc_a(ins)];
cTValue *o1mm = o1;
if (op == BC_ISEQV) {
o2 = &L->base[bc_d(ins)];
if (!tviscdata(o1mm)) o1mm = o2;
} else if (op == BC_ISEQS) {
setstrV(L, &tv, gco2str(proto_kgc(curr_proto(L), ~(ptrdiff_t)bc_d(ins))));
o2 = &tv;
} else if (op == BC_ISEQN) {
o2 = &mref(curr_proto(L)->k, cTValue)[bc_d(ins)];
} else {
lua_assert(op == BC_ISEQP);
setpriV(&tv, ~bc_d(ins));
o2 = &tv;
}
mo = lj_meta_lookup(L, o1mm, MM_eq);
if (LJ_LIKELY(!tvisnil(mo)))
return mmcall(L, cont, mo, o1, o2);
else
return (TValue *)(intptr_t)(bc_op(ins) & 1);
}
/* Recursively set the JIT mode for all children of a prototype. */
static void setptmode_all(global_State *g, GCproto *pt, int mode)
{
ptrdiff_t i;
for (i = -(ptrdiff_t)pt->sizekgc; i < 0; i++) {
GCobj *o = proto_kgc(pt, i);
if (o->gch.gct == ~LJ_TPROTO) {
setptmode(g, gco2pt(o), mode);
setptmode_all(g, gco2pt(o), mode);
}
}
}
static void add_activelines(lua_State *L, GCproto *proto) {
/*
** LuaJIT packs active lines depending on function length.
** See implementation of lj_debug_getinfo in lj_debug.c.
*/
ptrdiff_t idx;
const void *lineinfo = proto_lineinfo(proto);
if (lineinfo) {
BCLine first = proto->firstline;
int sz = proto->numline < 256 ? 1 : proto->numline < 65536 ? 2 : 4;
MSize i, szl = proto->sizebc - 1;
for (i = 0; i < szl; i++) {
BCLine line = first +
(sz == 1 ? (BCLine) ((const uint8_t *) lineinfo)[i] :
sz == 2 ? (BCLine) ((const uint16_t *) lineinfo)[i] :
(BCLine) ((const uint32_t *) lineinfo)[i]);
lua_pushinteger(L, line);
lua_pushboolean(L, 1);
lua_settable(L, -3);
}
}
/*
** LuaJIT stores nested prototypes as garbage-collectible constants,
** iterate over them. See implementation of jit_util_funck in lib_jit.c.
*/
for (idx = -1; ~idx < (ptrdiff_t) proto->sizekgc; idx--) {
GCobj *gc = proto_kgc(proto, idx);
if (~gc->gch.gct == LJ_TPROTO) {
add_activelines(L, (GCproto *) gc);
}
}
}