erts: Refactor out func_info into struct

This commit adds two new structs to be used to represent
erlang code in erts.

ErtsCodeInfo is used to describe the i_func_info header
that is part of all Export entries and the prelude of
each function. This replaces all the BeamInstr * that
were previously used to point to these locations.
After this change the code should never use BeamInstr *
with offsets to figure out different parts of the
func_info header.

ErtsCodeMFA is a struct that is used to descripe a
MFA in code. It is used within ErtsCodeInfo and also
in Process->current.

All function that previously took Eterm * or BeamInstr *
to identify a MFA now use the ErtsCodeMFA or ErtsCodeInfo
where appropriate.

The code has been tested to work when adding a new field to the
ErtsCodeInfo struct, but some updates are needed in ops.tab to
make it work.

31 files changed, 927 insertions, 800 deletions

diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c
index 153fa205ed..f584b486ed 100644
--- a/erts/emulator/beam/beam_bif_load.c
+++ b/erts/emulator/beam/beam_bif_load.c
@@ -792,19 +792,19 @@ BIF_RETTYPE finish_after_on_load_2(BIF_ALIST_2)
 	 */
 	for (i = 0; i < export_list_size(code_ix); i++) {
 	    Export *ep = export_list(i,code_ix);
-	    if (ep == NULL || ep->code[0] != BIF_ARG_1) {
+	    if (ep == NULL || ep->info.mfa.module != BIF_ARG_1) {
 		continue;
 	    }
-	    if (ep->code[4] != 0) {
-		ep->addressv[code_ix] = (void *) ep->code[4];
-		ep->code[4] = 0;
+	    if (ep->code[1] != 0) {
+		ep->addressv[code_ix] = (void *) ep->code[1];
+		ep->code[1] = 0;
 	    } else {
-		if (ep->addressv[code_ix] == ep->code+3 &&
-		    ep->code[3] == (BeamInstr) em_apply_bif) {
+		if (ep->addressv[code_ix] == ep->code &&
+		    ep->code[0] == (BeamInstr) em_apply_bif) {
 		    continue;
 		}
-		ep->addressv[code_ix] = ep->code+3;
-		ep->code[3] = (BeamInstr) em_call_error_handler;
+		ep->addressv[code_ix] = ep->code;
+		ep->code[0] = (BeamInstr) em_call_error_handler;
 	    }
 	}
 	modp->curr.code_hdr->on_load_function_ptr = NULL;
@@ -819,13 +819,13 @@ BIF_RETTYPE finish_after_on_load_2(BIF_ALIST_2)
 
 	for (i = 0; i < export_list_size(code_ix); i++) {
 	    Export *ep = export_list(i,code_ix);
-	    if (ep == NULL || ep->code[0] != BIF_ARG_1) {
+	    if (ep == NULL || ep->info.mfa.module != BIF_ARG_1) {
 		continue;
 	    }
-	    if (ep->code[3] == (BeamInstr) em_apply_bif) {
+	    if (ep->code[0] == (BeamInstr) em_apply_bif) {
 		continue;
 	    }
-	    ep->code[4] = 0;
+	    ep->code[1] = 0;
 	}
     }
     erts_smp_thr_progress_unblock();
@@ -849,9 +849,9 @@ set_default_trace_pattern(Eterm module)
 				   &trace_pattern_flags,
 				   &meta_tracer);
     if (trace_pattern_is_on) {
-	Eterm mfa[1];
-	mfa[0] = module;
-	(void) erts_set_trace_pattern(0, mfa, 1,
+        ErtsCodeMFA mfa;
+        mfa.module = module;
+	(void) erts_set_trace_pattern(0, &mfa, 1,
 				      match_spec,
 				      meta_match_spec,
 				      1, trace_pattern_flags,
@@ -1710,23 +1710,23 @@ delete_code(Module* modp)
 
     for (i = 0; i < export_list_size(code_ix); i++) {
 	Export *ep = export_list(i, code_ix);
-        if (ep != NULL && (ep->code[0] == module)) {
-	    if (ep->addressv[code_ix] == ep->code+3) {
-		if (ep->code[3] == (BeamInstr) em_apply_bif) {
+        if (ep != NULL && (ep->info.mfa.module == module)) {
+	    if (ep->addressv[code_ix] == ep->code) {
+		if (ep->code[0] == (BeamInstr) em_apply_bif) {
 		    continue;
 		}
-		else if (ep->code[3] ==
+		else if (ep->code[0] ==
 			 (BeamInstr) BeamOp(op_i_generic_breakpoint)) {
 		    ERTS_SMP_LC_ASSERT(erts_smp_thr_progress_is_blocking());
 		    ASSERT(modp->curr.num_traced_exports > 0);
-		    erts_clear_export_break(modp, ep->code+3);
+		    erts_clear_export_break(modp, &ep->info);
 		}
-		else ASSERT(ep->code[3] == (BeamInstr) em_call_error_handler
+		else ASSERT(ep->code[0] == (BeamInstr) em_call_error_handler
 			    || !erts_initialized);
 	    }
-	    ep->addressv[code_ix] = ep->code+3;
-	    ep->code[3] = (BeamInstr) em_call_error_handler;
-	    ep->code[4] = 0;
+	    ep->addressv[code_ix] = ep->code;
+	    ep->code[0] = (BeamInstr) em_call_error_handler;
+	    ep->code[1] = 0;
 	}
     }
 
diff --git a/erts/emulator/beam/beam_bp.c b/erts/emulator/beam/beam_bp.c
index 920c8b1ed0..2cdf66f441 100644
--- a/erts/emulator/beam/beam_bp.c
+++ b/erts/emulator/beam/beam_bp.c
@@ -92,27 +92,27 @@ get_mtime(Process *c_p)
 /*
 ** Helpers
 */
-static ErtsTracer do_call_trace(Process* c_p, BeamInstr* I, Eterm* reg,
+static ErtsTracer do_call_trace(Process* c_p, ErtsCodeInfo *info, Eterm* reg,
                                 int local, Binary* ms, ErtsTracer tracer);
 static void set_break(BpFunctions* f, Binary *match_spec, Uint break_flags,
 		      enum erts_break_op count_op, ErtsTracer tracer);
-static void set_function_break(BeamInstr *pc,
+static void set_function_break(ErtsCodeInfo *ci,
 			       Binary *match_spec,
 			       Uint break_flags,
 			       enum erts_break_op count_op,
 			       ErtsTracer tracer);
 
 static void clear_break(BpFunctions* f, Uint break_flags);
-static int clear_function_break(BeamInstr *pc, Uint break_flags);
+static int clear_function_break(ErtsCodeInfo *ci, Uint break_flags);
 
-static BpDataTime* get_time_break(BeamInstr *pc);
-static GenericBpData* check_break(BeamInstr *pc, Uint break_flags);
+static BpDataTime* get_time_break(ErtsCodeInfo *ci);
+static GenericBpData* check_break(ErtsCodeInfo *ci, Uint break_flags);
 
-static void bp_meta_unref(BpMetaTracer* bmt);
-static void bp_count_unref(BpCount* bcp);
-static void bp_time_unref(BpDataTime* bdt);
-static void consolidate_bp_data(Module* modp, BeamInstr* pc, int local);
-static void uninstall_breakpoint(BeamInstr* pc);
+static void bp_meta_unref(BpMetaTracer *bmt);
+static void bp_count_unref(BpCount *bcp);
+static void bp_time_unref(BpDataTime *bdt);
+static void consolidate_bp_data(Module *modp, ErtsCodeInfo *ci, int local);
+static void uninstall_breakpoint(ErtsCodeInfo *ci);
 
 /* bp_hash */
 #define BP_TIME_ADD(pi0, pi1)                       \
@@ -139,7 +139,7 @@ erts_bp_init(void) {
 
 
 void
-erts_bp_match_functions(BpFunctions* f, Eterm mfa[3], int specified)
+erts_bp_match_functions(BpFunctions* f, ErtsCodeMFA *mfa, int specified)
 {
     ErtsCodeIndex code_ix = erts_active_code_ix();
     Uint max_funcs = 0;
@@ -164,41 +164,44 @@ erts_bp_match_functions(BpFunctions* f, Eterm mfa[3], int specified)
     i = 0;
     for (current = 0; current < num_modules; current++) {
 	BeamCodeHeader* code_hdr = module[current]->curr.code_hdr;
-	BeamInstr* code;
+	ErtsCodeInfo* ci;
 	Uint num_functions = (Uint)(UWord) code_hdr->num_functions;
 	Uint fi;
 
 	if (specified > 0) {
-	    if (mfa[0] != make_atom(module[current]->module)) {
+	    if (mfa->module != make_atom(module[current]->module)) {
 		/* Wrong module name */
 		continue;
 	    }
 	}
 
 	for (fi = 0; fi < num_functions; fi++) {
-	    BeamInstr* pc;
-	    int wi;
 
-	    code = code_hdr->functions[fi];
-	    ASSERT(code[0] == (BeamInstr) BeamOp(op_i_func_info_IaaI));
-	    pc = code+5;
-	    if (erts_is_native_break(pc)) {
+	    ci = code_hdr->functions[fi];
+	    ASSERT(ci->op == (BeamInstr) BeamOp(op_i_func_info_IaaI));
+	    if (erts_is_native_break(ci)) {
 		continue;
 	    }
-	    if (is_nil(code[3])) { /* Ignore BIF stub */
+	    if (is_nil(ci->mfa.module)) { /* Ignore BIF stub */
 		continue;
 	    }
-	    for (wi = 0;
-		 wi < specified && (Eterm) code[2+wi] == mfa[wi];
-		 wi++) {
-		/* Empty loop body */
-	    }
-	    if (wi == specified) {
-		/* Store match */
-		f->matching[i].pc = pc;
-		f->matching[i].mod = module[current];
-		i++;
-	    }
+            switch (specified) {
+            case 3:
+                if (ci->mfa.arity != mfa->arity)
+                    continue;
+            case 2:
+                if (ci->mfa.function != mfa->function)
+                    continue;
+            case 1:
+                if (ci->mfa.module != mfa->module)
+                    continue;
+            case 0:
+                break;
+            }
+            /* Store match */
+            f->matching[i].ci = ci;
+            f->matching[i].mod = module[current];
+            i++;
 	}
     }
     f->matched = i;
@@ -206,7 +209,7 @@ erts_bp_match_functions(BpFunctions* f, Eterm mfa[3], int specified)
 }
 
 void
-erts_bp_match_export(BpFunctions* f, Eterm mfa[3], int specified)
+erts_bp_match_export(BpFunctions* f, ErtsCodeMFA *mfa, int specified)
 {
     ErtsCodeIndex code_ix = erts_active_code_ix();
     int i;
@@ -218,27 +221,36 @@ erts_bp_match_export(BpFunctions* f, Eterm mfa[3], int specified)
     for (i = 0; i < num_exps; i++) {
 	Export* ep = export_list(i, code_ix);
 	BeamInstr* pc;
-	int j;
 
-	for (j = 0; j < specified && mfa[j] == ep->code[j]; j++) {
-	    /* Empty loop body */
-	}
-	if (j < specified) {
-	    continue;
-	}
-	pc = ep->code+3;
+        switch (specified) {
+        case 3:
+            if (mfa->arity != ep->info.mfa.arity)
+                continue;
+        case 2:
+            if (mfa->function != ep->info.mfa.function)
+                continue;
+        case 1:
+            if (mfa->module != ep->info.mfa.module)
+                continue;
+        case 0:
+            break;
+        default:
+            ASSERT(0);
+        }
+
+	pc = ep->code;
 	if (ep->addressv[code_ix] == pc) {
 	    if ((*pc == (BeamInstr) em_apply_bif ||
 		 *pc == (BeamInstr) em_call_error_handler)) {
 		continue;
 	    }
 	    ASSERT(*pc == (BeamInstr) BeamOp(op_i_generic_breakpoint));
-	} else if (erts_is_native_break(ep->addressv[code_ix])) {
+	} else if (erts_is_native_break(erts_code_to_codeinfo(ep->addressv[code_ix]))) {
 	    continue;
 	}
 
-	f->matching[ne].pc = pc;
-	f->matching[ne].mod = erts_get_module(ep->code[0], code_ix);
+	f->matching[ne].ci = &ep->info;
+	f->matching[ne].mod = erts_get_module(ep->info.mfa.module, code_ix);
 	ne++;
 
     }
@@ -264,7 +276,7 @@ erts_consolidate_bp_data(BpFunctions* f, int local)
     ERTS_SMP_LC_ASSERT(erts_has_code_write_permission());
 
     for (i = 0; i < n; i++) {
-	consolidate_bp_data(fs[i].mod, fs[i].pc, local);
+	consolidate_bp_data(fs[i].mod, fs[i].ci, local);
     }
 }
 
@@ -276,14 +288,14 @@ erts_consolidate_bif_bp_data(void)
     ERTS_SMP_LC_ASSERT(erts_has_code_write_permission());
     for (i = 0; i < BIF_SIZE; i++) {
 	Export *ep = bif_export[i];
-	consolidate_bp_data(0, ep->code+3, 0);
+	consolidate_bp_data(0, &ep->info, 0);
     }
 }
 
 static void
-consolidate_bp_data(Module* modp, BeamInstr* pc, int local)
+consolidate_bp_data(Module* modp, ErtsCodeInfo *ci, int local)
 {
-    GenericBp* g = (GenericBp *) pc[-4];
+    GenericBp* g = (GenericBp *) ci->native;
     GenericBpData* src;
     GenericBpData* dst;
     Uint flags;
@@ -329,9 +341,10 @@ consolidate_bp_data(Module* modp, BeamInstr* pc, int local)
 	    }
 	    ASSERT(modp->curr.num_breakpoints >= 0);
 	    ASSERT(modp->curr.num_traced_exports >= 0);
-	    ASSERT(*pc != (BeamInstr) BeamOp(op_i_generic_breakpoint));
+	    ASSERT(*erts_codeinfo_to_code(ci) !=
+                   (BeamInstr) BeamOp(op_i_generic_breakpoint));
 	}
-	pc[-4] = 0;
+	ci->native = 0;
 	Free(g);
 	return;
     }
@@ -380,8 +393,9 @@ erts_install_breakpoints(BpFunctions* f)
     BeamInstr br = (BeamInstr) BeamOp(op_i_generic_breakpoint);
 
     for (i = 0; i < n; i++) {
-	BeamInstr* pc = f->matching[i].pc;
-	GenericBp* g = (GenericBp *) pc[-4];
+	ErtsCodeInfo* ci = f->matching[i].ci;
+        BeamInstr *pc = erts_codeinfo_to_code(ci);
+	GenericBp* g = (GenericBp *) ci->native;
 	if (*pc != br && g) {
 	    Module* modp = f->matching[i].mod;
 
@@ -413,16 +427,16 @@ erts_uninstall_breakpoints(BpFunctions* f)
     Uint n = f->matched;
 
     for (i = 0; i < n; i++) {
-	BeamInstr* pc = f->matching[i].pc;
-	uninstall_breakpoint(pc);
+	uninstall_breakpoint(f->matching[i].ci);
     }
 }
 
 static void
-uninstall_breakpoint(BeamInstr* pc)
+uninstall_breakpoint(ErtsCodeInfo *ci)
 {
+    BeamInstr *pc = erts_codeinfo_to_code(ci);
     if (*pc == (BeamInstr) BeamOp(op_i_generic_breakpoint)) {
-	GenericBp* g = (GenericBp *) pc[-4];
+	GenericBp* g = (GenericBp *) ci->native;
 	if (g->data[erts_active_bp_ix()].flags == 0) {
 	    /*
 	     * The following write is not protected by any lock. We
@@ -449,30 +463,30 @@ erts_set_mtrace_break(BpFunctions* f, Binary *match_spec, ErtsTracer tracer)
 }
 
 void
-erts_set_call_trace_bif(BeamInstr *pc, Binary *match_spec, int local)
+erts_set_call_trace_bif(ErtsCodeInfo *ci, Binary *match_spec, int local)
 {
     Uint flags = local ? ERTS_BPF_LOCAL_TRACE : ERTS_BPF_GLOBAL_TRACE;
 
-    set_function_break(pc, match_spec, flags, 0, erts_tracer_nil);
+    set_function_break(ci, match_spec, flags, 0, erts_tracer_nil);
 }
 
 void
-erts_set_mtrace_bif(BeamInstr *pc, Binary *match_spec, ErtsTracer tracer)
+erts_set_mtrace_bif(ErtsCodeInfo *ci, Binary *match_spec, ErtsTracer tracer)
 {
-    set_function_break(pc, match_spec, ERTS_BPF_META_TRACE, 0, tracer);
+    set_function_break(ci, match_spec, ERTS_BPF_META_TRACE, 0, tracer);
 }
 
 void
-erts_set_time_trace_bif(BeamInstr *pc, enum erts_break_op count_op)
+erts_set_time_trace_bif(ErtsCodeInfo *ci, enum erts_break_op count_op)
 {
-    set_function_break(pc, NULL,
+    set_function_break(ci, NULL,
 		       ERTS_BPF_TIME_TRACE|ERTS_BPF_TIME_TRACE_ACTIVE,
 		       count_op, erts_tracer_nil);
 }
 
 void
-erts_clear_time_trace_bif(BeamInstr *pc) {
-    clear_function_break(pc, ERTS_BPF_TIME_TRACE|ERTS_BPF_TIME_TRACE_ACTIVE);
+erts_clear_time_trace_bif(ErtsCodeInfo *ci) {
+    clear_function_break(ci, ERTS_BPF_TIME_TRACE|ERTS_BPF_TIME_TRACE_ACTIVE);
 }
 
 void
@@ -501,14 +515,14 @@ erts_clear_trace_break(BpFunctions* f)
 }
 
 void
-erts_clear_call_trace_bif(BeamInstr *pc, int local)
+erts_clear_call_trace_bif(ErtsCodeInfo *ci, int local)
 {
-    GenericBp* g = (GenericBp *) pc[-4];
+    GenericBp* g = (GenericBp *) ci->native;
 
     if (g) {
 	Uint flags = local ? ERTS_BPF_LOCAL_TRACE : ERTS_BPF_GLOBAL_TRACE;
 	if (g->data[erts_staging_bp_ix()].flags & flags) {
-	    clear_function_break(pc, flags);
+	    clear_function_break(ci, flags);
 	}
     }
 }
@@ -520,9 +534,9 @@ erts_clear_mtrace_break(BpFunctions* f)
 }
 
 void
-erts_clear_mtrace_bif(BeamInstr *pc)
+erts_clear_mtrace_bif(ErtsCodeInfo *ci)
 {
-    clear_function_break(pc, ERTS_BPF_META_TRACE);
+    clear_function_break(ci, ERTS_BPF_META_TRACE);
 }
 
 void
@@ -564,52 +578,48 @@ erts_clear_module_break(Module *modp) {
     }
     n = (Uint)(UWord) code_hdr->num_functions;
     for (i = 0; i < n; ++i) {
-	BeamInstr* pc;
-
-	pc = code_hdr->functions[i] + 5;
-	if (erts_is_native_break(pc)) {
+	ErtsCodeInfo *ci = code_hdr->functions[i];
+	if (erts_is_native_break(ci))
 	    continue;
-	}
-	clear_function_break(pc, ERTS_BPF_ALL);
+	clear_function_break(ci, ERTS_BPF_ALL);
     }
 
     erts_commit_staged_bp();
 
     for (i = 0; i < n; ++i) {
-	BeamInstr* pc;
-
-	pc = code_hdr->functions[i] + 5;
-	if (erts_is_native_break(pc)) {
+	ErtsCodeInfo *ci = code_hdr->functions[i];
+	if (erts_is_native_break(ci))
 	    continue;
-	}
-	uninstall_breakpoint(pc);
-	consolidate_bp_data(modp, pc, 1);
-	ASSERT(pc[-4] == 0);
+	uninstall_breakpoint(ci);
+	consolidate_bp_data(modp, ci, 1);
+	ASSERT(ci->native == 0);
     }
     return n;
 }
 
 void
-erts_clear_export_break(Module* modp, BeamInstr* pc)
+erts_clear_export_break(Module* modp, ErtsCodeInfo *ci)
 {
     ERTS_SMP_LC_ASSERT(erts_smp_thr_progress_is_blocking());
 
-    clear_function_break(pc, ERTS_BPF_ALL);
+    clear_function_break(ci, ERTS_BPF_ALL);
     erts_commit_staged_bp();
-    *pc = (BeamInstr) 0;
-    consolidate_bp_data(modp, pc, 0);
-    ASSERT(pc[-4] == 0);
+    *erts_codeinfo_to_code(ci) = (BeamInstr) 0;
+    consolidate_bp_data(modp, ci, 0);
+    ASSERT(ci->native == 0);
 }
 
 BeamInstr
-erts_generic_breakpoint(Process* c_p, BeamInstr* I, Eterm* reg)
+erts_generic_breakpoint(Process* c_p, ErtsCodeInfo *info, Eterm* reg)
 {
     GenericBp* g;
     GenericBpData* bp;
     Uint bp_flags;
     ErtsBpIndex ix = erts_active_bp_ix();
 
-    g = (GenericBp *) I[-4];
+    ASSERT(info->op == (BeamInstr) BeamOp(op_i_func_info_IaaI));
+
+    g = (GenericBp *) info->native;
     bp = &g->data[ix];
     bp_flags = bp->flags;
     ASSERT((bp_flags & ~ERTS_BPF_ALL) == 0);
@@ -628,9 +638,9 @@ erts_generic_breakpoint(Process* c_p, BeamInstr* I, Eterm* reg)
 
     if (bp_flags & ERTS_BPF_LOCAL_TRACE) {
 	ASSERT((bp_flags & ERTS_BPF_GLOBAL_TRACE) == 0);
-	(void) do_call_trace(c_p, I, reg, 1, bp->local_ms, erts_tracer_true);
+	(void) do_call_trace(c_p, info, reg, 1, bp->local_ms, erts_tracer_true);
     } else if (bp_flags & ERTS_BPF_GLOBAL_TRACE) {
-	(void) do_call_trace(c_p, I, reg, 0, bp->local_ms, erts_tracer_true);
+	(void) do_call_trace(c_p, info, reg, 0, bp->local_ms, erts_tracer_true);
     }
 
     if (bp_flags & ERTS_BPF_META_TRACE) {
@@ -638,7 +648,8 @@ erts_generic_breakpoint(Process* c_p, BeamInstr* I, Eterm* reg)
 
 	old_tracer = erts_smp_atomic_read_nob(&bp->meta_tracer->tracer);
 
-	new_tracer = do_call_trace(c_p, I, reg, 1, bp->meta_ms, old_tracer);
+	new_tracer = do_call_trace(c_p, info, reg, 1, bp->meta_ms, old_tracer);
+
 	if (!ERTS_TRACER_COMPARE(new_tracer, old_tracer)) {
             if (old_tracer == erts_smp_atomic_cmpxchg_acqb(
                     &bp->meta_tracer->tracer,
@@ -657,7 +668,7 @@ erts_generic_breakpoint(Process* c_p, BeamInstr* I, Eterm* reg)
 
     if (bp_flags & ERTS_BPF_TIME_TRACE_ACTIVE) {
 	Eterm w;
-	erts_trace_time_call(c_p, I, bp->time);
+	erts_trace_time_call(c_p, info, bp->time);
 	w = (BeamInstr) *c_p->cp;
 	if (! (w == (BeamInstr) BeamOp(op_i_return_time_trace) ||
 	       w == (BeamInstr) BeamOp(op_return_trace) ||
@@ -665,7 +676,7 @@ erts_generic_breakpoint(Process* c_p, BeamInstr* I, Eterm* reg)
 	    Eterm* E = c_p->stop;
 	    ASSERT(c_p->htop <= E && E <= c_p->hend);
 	    if (E - 2 < c_p->htop) {
-		(void) erts_garbage_collect(c_p, 2, reg, I[-1]);
+		(void) erts_garbage_collect(c_p, 2, reg, info->mfa.arity);
 		ERTS_VERIFY_UNUSED_TEMP_ALLOC(c_p);
 	    }
 	    E = c_p->stop;
@@ -673,7 +684,7 @@ erts_generic_breakpoint(Process* c_p, BeamInstr* I, Eterm* reg)
 	    ASSERT(c_p->htop <= E && E <= c_p->hend);
 
 	    E -= 2;
-	    E[0] = make_cp(I);
+	    E[0] = make_cp(erts_codeinfo_to_code(info));
 	    E[1] = make_cp(c_p->cp);     /* original return address */
 	    c_p->cp = beam_return_time_trace;
 	    c_p->stop = E;
@@ -701,9 +712,9 @@ erts_bif_trace(int bif_index, Process* p, Eterm* args, BeamInstr* I)
     Export* ep = bif_export[bif_index];
     Uint32 flags = 0, flags_meta = 0;
     ErtsTracer meta_tracer = erts_tracer_nil;
-    int applying = (I == &(ep->code[3])); /* Yup, the apply code for a bif
-					   * is actually in the
-					   * export entry */
+    int applying = (I == ep->code); /* Yup, the apply code for a bif
+                                      * is actually in the
+                                      * export entry */
     BeamInstr *cp = p->cp;
     GenericBp* g;
     GenericBpData* bp = NULL;
@@ -711,7 +722,7 @@ erts_bif_trace(int bif_index, Process* p, Eterm* args, BeamInstr* I)
 
     ERTS_SMP_CHK_HAVE_ONLY_MAIN_PROC_LOCK(p);
 
-    g = (GenericBp *) ep->fake_op_func_info_for_hipe[1];
+    g = (GenericBp *) ep->info.native;
     if (g) {
 	bp = &g->data[erts_active_bp_ix()];
 	bp_flags = bp->flags;
@@ -727,7 +738,7 @@ erts_bif_trace(int bif_index, Process* p, Eterm* args, BeamInstr* I)
     if (bp_flags & (ERTS_BPF_LOCAL_TRACE|ERTS_BPF_GLOBAL_TRACE) &&
 	IS_TRACED_FL(p, F_TRACE_CALLS)) {
 	int local = !!(bp_flags & ERTS_BPF_LOCAL_TRACE);
-	flags = erts_call_trace(p, ep->code, bp->local_ms, args,
+	flags = erts_call_trace(p, &ep->info, bp->local_ms, args,
 				local, &ERTS_TRACER(p));
     }
     if (bp_flags & ERTS_BPF_META_TRACE) {
@@ -735,7 +746,7 @@ erts_bif_trace(int bif_index, Process* p, Eterm* args, BeamInstr* I)
 
         meta_tracer = erts_smp_atomic_read_nob(&bp->meta_tracer->tracer);
         old_tracer = meta_tracer;
-	flags_meta = erts_call_trace(p, ep->code, bp->meta_ms, args,
+	flags_meta = erts_call_trace(p, &ep->info, bp->meta_ms, args,
 				     0, &meta_tracer);
 
 	if (!ERTS_TRACER_COMPARE(old_tracer, meta_tracer)) {
@@ -753,8 +764,7 @@ erts_bif_trace(int bif_index, Process* p, Eterm* args, BeamInstr* I)
     }
     if (bp_flags & ERTS_BPF_TIME_TRACE_ACTIVE &&
 	IS_TRACED_FL(p, F_TRACE_CALLS)) {
-	BeamInstr *pc = (BeamInstr *)ep->code+3;
-	erts_trace_time_call(p, pc, bp->time);
+	erts_trace_time_call(p, &ep->info, bp->time);
     }
 
     /* Restore original continuation pointer (if changed). */
@@ -817,11 +827,11 @@ erts_bif_trace(int bif_index, Process* p, Eterm* args, BeamInstr* I)
 	    class = exception_tag[GET_EXC_CLASS(reason)];
 
 	    if (flags_meta & MATCH_SET_EXCEPTION_TRACE) {
-		erts_trace_exception(p, ep->code, class, value,
+		erts_trace_exception(p, &ep->info.mfa, class, value,
 				     &meta_tracer);
 	    }
 	    if (flags & MATCH_SET_EXCEPTION_TRACE) {
-		erts_trace_exception(p, ep->code, class, value,
+		erts_trace_exception(p, &ep->info.mfa, class, value,
 				     &ERTS_TRACER(p));
 	    }
 	    if ((flags & MATCH_SET_RETURN_TO_TRACE) && p->catches > 0) {
@@ -852,11 +862,11 @@ erts_bif_trace(int bif_index, Process* p, Eterm* args, BeamInstr* I)
 	}
     } else {
 	if (flags_meta & MATCH_SET_RX_TRACE) {
-	    erts_trace_return(p, ep->code, result, &meta_tracer);
+	    erts_trace_return(p, &ep->info.mfa, result, &meta_tracer);
 	}
 	/* MATCH_SET_RETURN_TO_TRACE cannot occur if(meta) */
 	if (flags & MATCH_SET_RX_TRACE) {
-	    erts_trace_return(p, ep->code, result, &ERTS_TRACER(p));
+	    erts_trace_return(p, &ep->info.mfa, result, &ERTS_TRACER(p));
 	}
 	if (flags & MATCH_SET_RETURN_TO_TRACE &&
             IS_TRACED_FL(p, F_TRACE_RETURN_TO)) {
@@ -875,7 +885,7 @@ erts_bif_trace(int bif_index, Process* p, Eterm* args, BeamInstr* I)
 }
 
 static ErtsTracer
-do_call_trace(Process* c_p, BeamInstr* I, Eterm* reg,
+do_call_trace(Process* c_p, ErtsCodeInfo* info, Eterm* reg,
 	      int local, Binary* ms, ErtsTracer tracer)
 {
     Eterm* cpp;
@@ -916,7 +926,7 @@ do_call_trace(Process* c_p, BeamInstr* I, Eterm* reg,
 	ASSERT(is_CP(*cpp));
     }
     ERTS_SMP_UNREQ_PROC_MAIN_LOCK(c_p);
-    flags = erts_call_trace(c_p, I-3, ms, reg, local, &tracer);
+    flags = erts_call_trace(c_p, info, ms, reg, local, &tracer);
     ERTS_SMP_REQ_PROC_MAIN_LOCK(c_p);
     if (cpp) {
 	c_p->cp = cp_save;
@@ -932,7 +942,7 @@ do_call_trace(Process* c_p, BeamInstr* I, Eterm* reg,
     if (need) {
 	ASSERT(c_p->htop <= E && E <= c_p->hend);
 	if (E - need < c_p->htop) {
-	    (void) erts_garbage_collect(c_p, need, reg, I[-1]);
+	    (void) erts_garbage_collect(c_p, need, reg, info->mfa.arity);
 	    ERTS_VERIFY_UNUSED_TEMP_ALLOC(c_p);
 	    E = c_p->stop;
 	}
@@ -948,12 +958,12 @@ do_call_trace(Process* c_p, BeamInstr* I, Eterm* reg,
 	E -= 3;
         c_p->stop = E;
 	ASSERT(c_p->htop <= E && E <= c_p->hend);
-	ASSERT(is_CP((Eterm) (UWord) (I - 3)));
+	ASSERT(is_CP((Eterm) (UWord) (&info->mfa.module)));
 	ASSERT(IS_TRACER_VALID(tracer));
 	E[2] = make_cp(c_p->cp);
         E[1] = copy_object(tracer, c_p);
-	E[0] = make_cp(I - 3); /* We ARE at the beginning of an
-				  instruction,
+	E[0] = make_cp(&info->mfa.module);
+                               /* We ARE at the beginning of an instruction,
 				  the funcinfo is above i. */
 	c_p->cp = (flags & MATCH_SET_EXCEPTION_TRACE) ?
 	    beam_exception_trace : beam_return_trace;
@@ -966,7 +976,7 @@ do_call_trace(Process* c_p, BeamInstr* I, Eterm* reg,
 }
 
 void
-erts_trace_time_call(Process* c_p, BeamInstr* I, BpDataTime* bdt)
+erts_trace_time_call(Process* c_p, ErtsCodeInfo *info, BpDataTime* bdt)
 {
     ErtsMonotonicTime time;
     process_breakpoint_time_t *pbt = NULL;
@@ -995,14 +1005,14 @@ erts_trace_time_call(Process* c_p, BeamInstr* I, BpDataTime* bdt)
 	pbt = Alloc(sizeof(process_breakpoint_time_t));
 	(void) ERTS_PROC_SET_CALL_TIME(c_p, pbt);
     } else {
-	ASSERT(pbt->pc);
+	ASSERT(pbt->ci);
 	/* add time to previous code */
 	sitem.time = time - pbt->time;
 	sitem.pid = c_p->common.id;
 	sitem.count = 0;
 
 	/* previous breakpoint */
-	pbdt = get_time_break(pbt->pc);
+	pbdt = get_time_break(pbt->ci);
 
 	/* if null then the breakpoint was removed */
 	if (pbdt) {
@@ -1039,12 +1049,12 @@ erts_trace_time_call(Process* c_p, BeamInstr* I, BpDataTime* bdt)
 	BP_TIME_ADD(item, &sitem);
     }
 
-    pbt->pc = I;
+    pbt->ci = info;
     pbt->time = time;
 }
 
 void
-erts_trace_time_return(Process *p, BeamInstr *pc)
+erts_trace_time_return(Process *p, ErtsCodeInfo *ci)
 {
     ErtsMonotonicTime time;
     process_breakpoint_time_t *pbt = NULL;
@@ -1074,14 +1084,14 @@ erts_trace_time_return(Process *p, BeamInstr *pc)
 	/* might have been removed due to
 	 * trace_pattern(false)
 	 */
-	ASSERT(pbt->pc);
+	ASSERT(pbt->ci);
 
 	sitem.time = time - pbt->time;
 	sitem.pid   = p->common.id;
 	sitem.count = 0;
 
 	/* previous breakpoint */
-	pbdt = get_time_break(pbt->pc);
+	pbdt = get_time_break(pbt->ci);
 
 	/* beware, the trace_pattern might have been removed */
 	if (pbdt) {
@@ -1098,16 +1108,16 @@ erts_trace_time_return(Process *p, BeamInstr *pc)
 	    }
 	}
 
-	pbt->pc = pc;
+	pbt->ci = ci;
 	pbt->time = time;
     }
 }
 
 int 
-erts_is_trace_break(BeamInstr *pc, Binary **match_spec_ret, int local)
+erts_is_trace_break(ErtsCodeInfo *ci, Binary **match_spec_ret, int local)
 {
     Uint flags = local ? ERTS_BPF_LOCAL_TRACE : ERTS_BPF_GLOBAL_TRACE;
-    GenericBpData* bp = check_break(pc, flags);
+    GenericBpData* bp = check_break(ci, flags);
 
     if (bp) {
 	if (match_spec_ret) {
@@ -1119,10 +1129,10 @@ erts_is_trace_break(BeamInstr *pc, Binary **match_spec_ret, int local)
 }
 
 int
-erts_is_mtrace_break(BeamInstr *pc, Binary **match_spec_ret,
+erts_is_mtrace_break(ErtsCodeInfo *ci, Binary **match_spec_ret,
 		     ErtsTracer *tracer_ret)
 {
-    GenericBpData* bp = check_break(pc, ERTS_BPF_META_TRACE);
+    GenericBpData* bp = check_break(ci, ERTS_BPF_META_TRACE);
     
     if (bp) {
 	if (match_spec_ret) {
@@ -1137,20 +1147,20 @@ erts_is_mtrace_break(BeamInstr *pc, Binary **match_spec_ret,
 }
 
 int
-erts_is_native_break(BeamInstr *pc) {
+erts_is_native_break(ErtsCodeInfo *ci) {
 #ifdef HIPE
-    ASSERT(pc[-5] == (BeamInstr) BeamOp(op_i_func_info_IaaI));
-    return pc[0]  == (BeamInstr) BeamOp(op_hipe_trap_call)
-	|| pc[0]  == (BeamInstr) BeamOp(op_hipe_trap_call_closure);
+    ASSERT(ci->op == (BeamInstr) BeamOp(op_i_func_info_IaaI));
+    return erts_codeinfo_to_code(ci)[0] == (BeamInstr) BeamOp(op_hipe_trap_call)
+	|| erts_codeinfo_to_code(ci)[0] == (BeamInstr) BeamOp(op_hipe_trap_call_closure);
 #else
     return 0;
 #endif
 }
 
 int 
-erts_is_count_break(BeamInstr *pc, Uint *count_ret)
+erts_is_count_break(ErtsCodeInfo *ci, Uint *count_ret)
 {
-    GenericBpData* bp = check_break(pc, ERTS_BPF_COUNT);
+    GenericBpData* bp = check_break(ci, ERTS_BPF_COUNT);
     
     if (bp) {
 	if (count_ret) {
@@ -1161,13 +1171,13 @@ erts_is_count_break(BeamInstr *pc, Uint *count_ret)
     return 0;
 }
 
-int erts_is_time_break(Process *p, BeamInstr *pc, Eterm *retval) {
+int erts_is_time_break(Process *p, ErtsCodeInfo *ci, Eterm *retval) {
     Uint i, ix;
     bp_time_hash_t hash;
     Uint size;
     Eterm *hp, t;
     bp_data_time_item_t *item = NULL;
-    BpDataTime *bdt = get_time_break(pc);
+    BpDataTime *bdt = get_time_break(ci);
 
     if (bdt) {
 	if (retval) {
@@ -1221,26 +1231,25 @@ int erts_is_time_break(Process *p, BeamInstr *pc, Eterm *retval) {
 }
 
 
-BeamInstr *
-erts_find_local_func(Eterm mfa[3]) {
+ErtsCodeInfo *
+erts_find_local_func(ErtsCodeMFA *mfa) {
     Module *modp;
     BeamCodeHeader* code_hdr;
-    BeamInstr* code_ptr;
+    ErtsCodeInfo* ci;
     Uint i,n;
 
-    if ((modp = erts_get_module(mfa[0], erts_active_code_ix())) == NULL)
+    if ((modp = erts_get_module(mfa->module, erts_active_code_ix())) == NULL)
 	return NULL;
     if ((code_hdr = modp->curr.code_hdr) == NULL)
 	return NULL;
     n = (BeamInstr) code_hdr->num_functions;
     for (i = 0; i < n; ++i) {
-	code_ptr = code_hdr->functions[i];
-	ASSERT(((BeamInstr) BeamOp(op_i_func_info_IaaI)) == code_ptr[0]);
-	ASSERT(mfa[0] == ((Eterm) code_ptr[2]) ||
-	       is_nil((Eterm) code_ptr[2]));
-	if (mfa[1] == ((Eterm) code_ptr[3]) &&
-	    ((BeamInstr) mfa[2]) == code_ptr[4]) {
-	    return code_ptr + 5;
+	ci = code_hdr->functions[i];
+	ASSERT(((BeamInstr) BeamOp(op_i_func_info_IaaI)) == ci->op);
+	ASSERT(mfa->module == ci->mfa.module || is_nil(ci->mfa.module));
+	if (mfa->function == ci->mfa.function &&
+	    mfa->arity == ci->mfa.arity) {
+	    return ci;
 	}
     }
     return NULL;
@@ -1369,7 +1378,7 @@ void erts_schedule_time_break(Process *p, Uint schedule) {
 	     * the previous breakpoint.
 	     */
 
-	    pbdt = get_time_break(pbt->pc);
+	    pbdt = get_time_break(pbt->ci);
 	    if (pbdt) {
 		sitem.time = get_mtime(p) - pbt->time;
 		sitem.pid   = p->common.id;
@@ -1417,14 +1426,14 @@ set_break(BpFunctions* f, Binary *match_spec, Uint break_flags,
 
     n = f->matched;
     for (i = 0; i < n; i++) {
-	BeamInstr* pc = f->matching[i].pc;
-	set_function_break(pc, match_spec, break_flags,
+	set_function_break(f->matching[i].ci,
+                           match_spec, break_flags,
 			   count_op, tracer);
     }
 }
 
 static void
-set_function_break(BeamInstr *pc, Binary *match_spec, Uint break_flags,
+set_function_break(ErtsCodeInfo *ci, Binary *match_spec, Uint break_flags,
 		   enum erts_break_op count_op, ErtsTracer tracer)
 {
     GenericBp* g;
@@ -1433,7 +1442,7 @@ set_function_break(BeamInstr *pc, Binary *match_spec, Uint break_flags,
     ErtsBpIndex ix = erts_staging_bp_ix();
 
     ERTS_SMP_LC_ASSERT(erts_has_code_write_permission());
-    g = (GenericBp *) pc[-4];
+    g = (GenericBp *) ci->native;
     if (g == 0) {
 	int i;
 	if (count_op == ERTS_BREAK_RESTART || count_op == ERTS_BREAK_PAUSE) {
@@ -1441,11 +1450,11 @@ set_function_break(BeamInstr *pc, Binary *match_spec, Uint break_flags,
 	    return;
 	}
 	g = Alloc(sizeof(GenericBp));
-	g->orig_instr = *pc;
+	g->orig_instr = *erts_codeinfo_to_code(ci);
 	for (i = 0; i < ERTS_NUM_BP_IX; i++) {
 	    g->data[i].flags = 0;
 	}
-	pc[-4] = (BeamInstr) g;
+	ci->native = (BeamInstr) g;
     }
     bp = &g->data[ix];
 
@@ -1537,13 +1546,12 @@ clear_break(BpFunctions* f, Uint break_flags)
 
     n = f->matched;
     for (i = 0; i < n; i++) {
-	BeamInstr* pc = f->matching[i].pc;
-	clear_function_break(pc, break_flags);
+	clear_function_break(f->matching[i].ci, break_flags);
     }
 }
 
 static int
-clear_function_break(BeamInstr *pc, Uint break_flags)
+clear_function_break(ErtsCodeInfo *ci, Uint break_flags)
 {
     GenericBp* g;
     GenericBpData* bp;
@@ -1552,7 +1560,7 @@ clear_function_break(BeamInstr *pc, Uint break_flags)
 
     ERTS_SMP_LC_ASSERT(erts_has_code_write_permission());
 
-    if ((g = (GenericBp *) pc[-4]) == 0) {
+    if ((g = (GenericBp *) ci->native) == 0) {
 	return 1;
     }
 
@@ -1638,19 +1646,19 @@ bp_time_unref(BpDataTime* bdt)
 }
 
 static BpDataTime*
-get_time_break(BeamInstr *pc)
+get_time_break(ErtsCodeInfo *ci)
 {
-    GenericBpData* bp = check_break(pc, ERTS_BPF_TIME_TRACE);
+    GenericBpData* bp = check_break(ci, ERTS_BPF_TIME_TRACE);
     return bp ? bp->time : 0;
 }
 
 static GenericBpData*
-check_break(BeamInstr *pc, Uint break_flags)
+check_break(ErtsCodeInfo *ci, Uint break_flags)
 {
-    GenericBp* g = (GenericBp *) pc[-4];
+    GenericBp* g = (GenericBp *) ci->native;
 
-    ASSERT(pc[-5] == (BeamInstr) BeamOp(op_i_func_info_IaaI));
-    if (erts_is_native_break(pc)) {
+    ASSERT(ci->op == (BeamInstr) BeamOp(op_i_func_info_IaaI));
+    if (erts_is_native_break(ci)) {
 	return 0;
     }
     if (g) {
diff --git a/erts/emulator/beam/beam_bp.h b/erts/emulator/beam/beam_bp.h
index 541af77211..d32a6bcba5 100644
--- a/erts/emulator/beam/beam_bp.h
+++ b/erts/emulator/beam/beam_bp.h
@@ -46,7 +46,7 @@ typedef struct bp_data_time {     /* Call time */
 
 typedef struct {
     ErtsMonotonicTime time;
-    BeamInstr *pc;
+    ErtsCodeInfo *ci;
 } process_breakpoint_time_t; /* used within psd */
 
 typedef struct {
@@ -95,7 +95,7 @@ enum erts_break_op{
 typedef Uint32 ErtsBpIndex;
 
 typedef struct {
-    BeamInstr* pc;
+    ErtsCodeInfo *ci;
     Module* mod;
 } BpFunction;
 
@@ -116,8 +116,8 @@ void erts_commit_staged_bp(void);
 ERTS_GLB_INLINE ErtsBpIndex erts_active_bp_ix(void);
 ERTS_GLB_INLINE ErtsBpIndex erts_staging_bp_ix(void);
 
-void erts_bp_match_functions(BpFunctions* f, Eterm mfa[3], int specified);
-void erts_bp_match_export(BpFunctions* f, Eterm mfa[3], int specified);
+void erts_bp_match_functions(BpFunctions* f, ErtsCodeMFA *mfa, int specified);
+void erts_bp_match_export(BpFunctions* f, ErtsCodeMFA *mfa, int specified);
 void erts_bp_free_matched_functions(BpFunctions* f);
 
 void erts_install_breakpoints(BpFunctions* f);
@@ -128,15 +128,15 @@ void erts_consolidate_bif_bp_data(void);
 void erts_set_trace_break(BpFunctions *f, Binary *match_spec);
 void erts_clear_trace_break(BpFunctions *f);
 
-void erts_set_call_trace_bif(BeamInstr *pc, Binary *match_spec, int local);
-void erts_clear_call_trace_bif(BeamInstr *pc, int local);
+void erts_set_call_trace_bif(ErtsCodeInfo *ci, Binary *match_spec, int local);
+void erts_clear_call_trace_bif(ErtsCodeInfo *ci, int local);
 
 void erts_set_mtrace_break(BpFunctions *f, Binary *match_spec,
 			  ErtsTracer tracer);
 void erts_clear_mtrace_break(BpFunctions *f);
-void erts_set_mtrace_bif(BeamInstr *pc, Binary *match_spec,
+void erts_set_mtrace_bif(ErtsCodeInfo *ci, Binary *match_spec,
 			 ErtsTracer tracer);
-void erts_clear_mtrace_bif(BeamInstr *pc);
+void erts_clear_mtrace_bif(ErtsCodeInfo *ci);
 
 void erts_set_debug_break(BpFunctions *f);
 void erts_clear_debug_break(BpFunctions *f);
@@ -146,32 +146,32 @@ void erts_clear_count_break(BpFunctions *f);
 
 void erts_clear_all_breaks(BpFunctions* f);
 int erts_clear_module_break(Module *modp);
-void erts_clear_export_break(Module *modp, BeamInstr* pc);
+void erts_clear_export_break(Module *modp, ErtsCodeInfo* ci);
 
-BeamInstr erts_generic_breakpoint(Process* c_p, BeamInstr* I, Eterm* reg);
-BeamInstr erts_trace_break(Process *p, BeamInstr *pc, Eterm *args,
+BeamInstr erts_generic_breakpoint(Process* c_p, ErtsCodeInfo *ci, Eterm* reg);
+BeamInstr erts_trace_break(Process *p, ErtsCodeInfo *ci, Eterm *args,
                            Uint32 *ret_flags, ErtsTracer *tracer);
 
-int erts_is_trace_break(BeamInstr *pc, Binary **match_spec_ret, int local);
-int erts_is_mtrace_break(BeamInstr *pc, Binary **match_spec_ret,
+int erts_is_trace_break(ErtsCodeInfo *ci, Binary **match_spec_ret, int local);
+int erts_is_mtrace_break(ErtsCodeInfo *ci, Binary **match_spec_ret,
 			 ErtsTracer *tracer_ret);
-int erts_is_mtrace_bif(BeamInstr *pc, Binary **match_spec_ret,
+int erts_is_mtrace_bif(ErtsCodeInfo *ci, Binary **match_spec_ret,
 		       ErtsTracer *tracer_ret);
-int erts_is_native_break(BeamInstr *pc);
-int erts_is_count_break(BeamInstr *pc, Uint *count_ret);
-int erts_is_time_break(Process *p, BeamInstr *pc, Eterm *call_time);
+int erts_is_native_break(ErtsCodeInfo *ci);
+int erts_is_count_break(ErtsCodeInfo *ci, Uint *count_ret);
+int erts_is_time_break(Process *p, ErtsCodeInfo *ci, Eterm *call_time);
 
-void erts_trace_time_call(Process* c_p, BeamInstr* pc, BpDataTime* bdt);
-void erts_trace_time_return(Process* c_p, BeamInstr* pc);
+void erts_trace_time_call(Process* c_p, ErtsCodeInfo *ci, BpDataTime* bdt);
+void erts_trace_time_return(Process* c_p, ErtsCodeInfo *ci);
 void erts_schedule_time_break(Process *p, Uint out);
 void erts_set_time_break(BpFunctions *f, enum erts_break_op);
 void erts_clear_time_break(BpFunctions *f);
 
-int erts_is_time_trace_bif(Process *p, BeamInstr *pc, Eterm *call_time);
-void erts_set_time_trace_bif(BeamInstr *pc, enum erts_break_op);
-void erts_clear_time_trace_bif(BeamInstr *pc);
+int erts_is_time_trace_bif(Process *p, ErtsCodeInfo *ci, Eterm *call_time);
+void erts_set_time_trace_bif(ErtsCodeInfo *ci, enum erts_break_op);
+void erts_clear_time_trace_bif(ErtsCodeInfo *ci);
 
-BeamInstr *erts_find_local_func(Eterm mfa[3]);
+ErtsCodeInfo *erts_find_local_func(ErtsCodeMFA *mfa);
 
 #if ERTS_GLB_INLINE_INCL_FUNC_DEF
 
diff --git a/erts/emulator/beam/beam_debug.c b/erts/emulator/beam/beam_debug.c
index 8f47ed4d9d..8d4be4667b 100644
--- a/erts/emulator/beam/beam_debug.c
+++ b/erts/emulator/beam/beam_debug.c
@@ -116,7 +116,7 @@ erts_debug_breakpoint_2(BIF_ALIST_2)
     Eterm MFA = BIF_ARG_1;
     Eterm boolean = BIF_ARG_2;
     Eterm* tp;
-    Eterm mfa[3];
+    ErtsCodeMFA mfa;
     int i;
     int specified = 0;
     Eterm res;
@@ -132,23 +132,24 @@ erts_debug_breakpoint_2(BIF_ALIST_2)
     if (*tp != make_arityval(3)) {
 	goto error;
     }
-    mfa[0] = tp[1];
-    mfa[1] = tp[2];
-    mfa[2] = tp[3];
-    if (!is_atom(mfa[0]) || !is_atom(mfa[1]) ||
-	(!is_small(mfa[2]) && mfa[2] != am_Underscore)) {
+    if (!is_atom(tp[1]) || !is_atom(tp[2]) ||
+	(!is_small(tp[3]) && tp[3] != am_Underscore)) {
 	goto error;
     }
-    for (i = 0; i < 3 && mfa[i] != am_Underscore; i++, specified++) {
+    for (i = 0; i < 3 && tp[i+1] != am_Underscore; i++, specified++) {
 	/* Empty loop body */
     }
     for (i = specified; i < 3; i++) {
-	if (mfa[i] != am_Underscore) {
+	if (tp[i+1] != am_Underscore) {
 	    goto error;
 	}
     }
-    if (is_small(mfa[2])) {
-	mfa[2] = signed_val(mfa[2]);
+
+    mfa.module = tp[1];
+    mfa.function = tp[2];
+
+    if (is_small(tp[3])) {
+        mfa.arity = signed_val(tp[3]);
     }
 
     if (!erts_try_seize_code_write_permission(BIF_P)) {
@@ -158,7 +159,7 @@ erts_debug_breakpoint_2(BIF_ALIST_2)
     erts_smp_proc_unlock(p, ERTS_PROC_LOCK_MAIN);
     erts_smp_thr_progress_block();
 
-    erts_bp_match_functions(&f, mfa, specified);
+    erts_bp_match_functions(&f, &mfa, specified);
     if (boolean == am_true) {
 	erts_set_debug_break(&f);
 	erts_install_breakpoints(&f);
@@ -242,17 +243,17 @@ erts_debug_disassemble_1(BIF_ALIST_1)
     Eterm* tp;
     Eterm bin;
     Eterm mfa;
-    BeamInstr* funcinfo = NULL;	/* Initialized to eliminate warning. */
+    ErtsCodeInfo *ci = NULL;
     BeamCodeHeader* code_hdr;
-    BeamInstr* code_ptr = NULL;	/* Initialized to eliminate warning. */
+    BeamInstr *code_ptr;
     BeamInstr instr;
     BeamInstr uaddr;
     Uint hsz;
     int i;
 
     if (term_to_UWord(addr, &uaddr)) {
-	code_ptr = (BeamInstr *) uaddr;
-	if ((funcinfo = find_function_from_pc(code_ptr)) == NULL) {
+	BeamInstr *pc = (BeamInstr *) uaddr;
+	if ((ci = find_function_from_pc(pc)) == NULL) {
 	    BIF_RET(am_false);
 	}
     } else if (is_tuple(addr)) {
@@ -283,24 +284,22 @@ erts_debug_disassemble_1(BIF_ALIST_1)
 	 * such as erts_debug:apply/4.  Then search for it in the module.
 	 */
 	if ((ep = erts_find_function(mod, name, arity, code_ix)) != NULL) {
-	    /* XXX: add "&& ep->address != ep->code+3" condition?
+	    /* XXX: add "&& ep->address != ep->code" condition?
 	     * Consider a traced function.
-	     * Its ep will have ep->address == ep->code+3.
+	     * Its ep will have ep->address == ep->code.
 	     * erts_find_function() will return the non-NULL ep.
 	     * Below we'll try to derive a code_ptr from ep->address.
 	     * But this code_ptr will point to the start of the Export,
 	     * not the function's func_info instruction. BOOM !?
 	     */
-	    code_ptr = ((BeamInstr *) ep->addressv[code_ix]) - 5;
-	    funcinfo = code_ptr+2;
+	    ci = erts_code_to_codeinfo(ep->addressv[code_ix]);
 	} else if (modp == NULL || (code_hdr = modp->curr.code_hdr) == NULL) {
 	    BIF_RET(am_undef);
 	} else {
 	    n = code_hdr->num_functions;
 	    for (i = 0; i < n; i++) {
-		code_ptr = code_hdr->functions[i];
-		if (code_ptr[3] == name && code_ptr[4] == arity) {
-		    funcinfo = code_ptr+2;
+		ci = code_hdr->functions[i];
+		if (ci->mfa.function == name && ci->mfa.arity == arity) {
 		    break;
 		}
 	    }
@@ -312,6 +311,8 @@ erts_debug_disassemble_1(BIF_ALIST_1)
 	goto error;
     }
 
+
+    code_ptr = erts_codeinfo_to_code(ci);
     dsbufp = erts_create_tmp_dsbuf(0);
     erts_print(ERTS_PRINT_DSBUF, (void *) dsbufp, HEXF ": ", code_ptr);
     instr = (BeamInstr) code_ptr[0];
@@ -333,9 +334,10 @@ erts_debug_disassemble_1(BIF_ALIST_1)
     (void) erts_bld_uword(NULL, &hsz, (BeamInstr) code_ptr);
     hp = HAlloc(p, hsz);
     addr = erts_bld_uword(&hp, NULL, (BeamInstr) code_ptr);
-    ASSERT(is_atom(funcinfo[0]) || funcinfo[0] == NIL);
-    ASSERT(is_atom(funcinfo[1]) || funcinfo[1] == NIL);
-    mfa = TUPLE3(hp, (Eterm) funcinfo[0], (Eterm) funcinfo[1], make_small((Eterm) funcinfo[2]));
+    ASSERT(is_atom(ci->mfa.module) || is_nil(ci->mfa.module));
+    ASSERT(is_atom(ci->mfa.function) || is_nil(ci->mfa.function == NIL));
+    mfa = TUPLE3(hp, ci->mfa.module, ci->mfa.function,
+                 make_small(ci->mfa.arity));
     hp += 4;
     return TUPLE3(hp, addr, bin, mfa);
 }
@@ -347,11 +349,12 @@ dbg_bt(Process* p, Eterm* sp)
 
     while (sp < stack) {
 	if (is_CP(*sp)) {
-	    BeamInstr* addr = find_function_from_pc(cp_val(*sp));
-	    if (addr)
+	    ErtsCodeInfo* ci = find_function_from_pc(cp_val(*sp));
+	    if (ci)
 		erts_fprintf(stderr,
 			     HEXF ": %T:%T/%bpu\n",
-			     addr, (Eterm) addr[0], (Eterm) addr[1], addr[2]);
+			     &ci->mfa.module, ci->mfa.module,
+                             ci->mfa.function, ci->mfa.arity);
 	}
 	sp++;
     }
@@ -360,17 +363,17 @@ dbg_bt(Process* p, Eterm* sp)
 void
 dbg_where(BeamInstr* addr, Eterm x0, Eterm* reg)
 {
-    BeamInstr* f = find_function_from_pc(addr);
+    ErtsCodeInfo* ci = find_function_from_pc(addr);
 
-    if (f == NULL) {
+    if (ci == NULL) {
 	erts_fprintf(stderr, "???\n");
     } else {
 	int arity;
 	int i;
 
-	addr = f;
-	arity = addr[2];
-	erts_fprintf(stderr, HEXF ": %T:%T(", addr, (Eterm) addr[0], (Eterm) addr[1]);
+	arity = ci->mfa.arity;
+	erts_fprintf(stderr, HEXF ": %T:%T(", addr,
+                     ci->mfa.module, ci->mfa.function);
 	for (i = 0; i < arity; i++)
 	    erts_fprintf(stderr, i ? ", %T" : "%T", i ? reg[i] : x0);
 	erts_fprintf(stderr, ")\n");
@@ -546,22 +549,24 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr)
 	    break;
 	case 'f':		/* Destination label */
 	    {
-		BeamInstr* f = find_function_from_pc((BeamInstr *)*ap);
-		if (f+3 != (BeamInstr *) *ap) {
+		ErtsCodeInfo* ci = find_function_from_pc((BeamInstr *)*ap);
+		if (erts_codeinfo_to_code(ci) != (BeamInstr *) *ap) {
 		    erts_print(to, to_arg, "f(" HEXF ")", *ap);
 		} else {
-		    erts_print(to, to_arg, "%T:%T/%bpu", (Eterm) f[0], (Eterm) f[1], f[2]);
+		    erts_print(to, to_arg, "%T:%T/%bpu", ci->mfa.module,
+                               ci->mfa.function, ci->mfa.arity);
 		}
 		ap++;
 	    }
 	    break;
 	case 'p':		/* Pointer (to label) */
 	    {
-		BeamInstr* f = find_function_from_pc((BeamInstr *)*ap);
-		if (f+3 != (BeamInstr *) *ap) {
+		ErtsCodeInfo* ci = find_function_from_pc((BeamInstr *)*ap);
+		if (erts_codeinfo_to_code(ci) != (BeamInstr *) *ap) {
 		    erts_print(to, to_arg, "p(" HEXF ")", *ap);
 		} else {
-		    erts_print(to, to_arg, "%T:%T/%bpu", (Eterm) f[0], (Eterm) f[1], f[2]);
+		    erts_print(to, to_arg, "%T:%T/%bpu", ci->mfa.module,
+                               ci->mfa.function, ci->mfa.arity);
 		}
 		ap++;
 	    }
@@ -574,7 +579,9 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr)
 	    {
 		Export* ex = (Export *) *ap;
 		erts_print(to, to_arg,
-			   "%T:%T/%bpu", (Eterm) ex->code[0], (Eterm) ex->code[1], ex->code[2]);
+			   "%T:%T/%bpu", (Eterm) ex->info.mfa.module,
+                           (Eterm) ex->info.mfa.function,
+                           ex->info.mfa.arity);
 		ap++;
 	    }
 	    break;
diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c
index 0ba06058a5..4ff177f215 100644
--- a/erts/emulator/beam/beam_emu.c
+++ b/erts/emulator/beam/beam_emu.c
@@ -116,10 +116,10 @@ do {                                     \
 #define MAX(x, y) (((x) > (y)) ? (x) : (y))
 #endif
 
-#define GET_BIF_MODULE(p)  ((Eterm) (((Export *) p)->code[0]))
-#define GET_BIF_FUNCTION(p)  ((Eterm) (((Export *) p)->code[1]))
-#define GET_BIF_ARITY(p)  ((Eterm) (((Export *) p)->code[2]))
-#define GET_BIF_ADDRESS(p) ((BifFunction) (((Export *) p)->code[4]))
+#define GET_BIF_MODULE(p)  (p->info.mfa.module)
+#define GET_BIF_FUNCTION(p)  (p->info.mfa.function)
+#define GET_BIF_ARITY(p)  (p->info.mfa.arity)
+#define GET_BIF_ADDRESS(p) ((BifFunction) (p->code[1]))
 #define TermWords(t) (((t) / (sizeof(BeamInstr)/sizeof(Eterm))) + !!((t) % (sizeof(BeamInstr)/sizeof(Eterm))))
 
 
@@ -1045,7 +1045,7 @@ void** beam_ops;
 static BifFunction translate_gc_bif(void* gcf) NOINLINE;
 static BeamInstr* handle_error(Process* c_p, BeamInstr* pc,
 			       Eterm* reg, BifFunction bf) NOINLINE;
-static BeamInstr* call_error_handler(Process* p, BeamInstr* ip,
+static BeamInstr* call_error_handler(Process* p, ErtsCodeMFA* mfa,
 				     Eterm* reg, Eterm func) NOINLINE;
 static BeamInstr* fixed_apply(Process* p, Eterm* reg, Uint arity) NOINLINE;
 static BeamInstr* apply(Process* p, Eterm module, Eterm function,
@@ -1106,98 +1106,91 @@ init_emulator(void)
 
 #ifdef USE_VM_CALL_PROBES
 
-#define DTRACE_LOCAL_CALL(p, m, f, a)					\
+#define DTRACE_LOCAL_CALL(p, mfa)					\
     if (DTRACE_ENABLED(local_function_entry)) {				\
         DTRACE_CHARBUF(process_name, DTRACE_TERM_BUF_SIZE);		\
-        DTRACE_CHARBUF(mfa, DTRACE_TERM_BUF_SIZE);			\
+        DTRACE_CHARBUF(mfa_buf, DTRACE_TERM_BUF_SIZE);			\
         int depth = STACK_START(p) - STACK_TOP(p);			\
-        dtrace_fun_decode(p, m, f, a,					\
-                          process_name, mfa);				\
-        DTRACE3(local_function_entry, process_name, mfa, depth);	\
+        dtrace_fun_decode(p, mfa, process_name, mfa_buf);               \
+        DTRACE3(local_function_entry, process_name, mfa_buf, depth);	\
     }
 
-#define DTRACE_GLOBAL_CALL(p, m, f, a)					\
+#define DTRACE_GLOBAL_CALL(p, mfa)					\
     if (DTRACE_ENABLED(global_function_entry)) {			\
         DTRACE_CHARBUF(process_name, DTRACE_TERM_BUF_SIZE);		\
-        DTRACE_CHARBUF(mfa, DTRACE_TERM_BUF_SIZE);			\
+        DTRACE_CHARBUF(mfa_buf, DTRACE_TERM_BUF_SIZE);			\
         int depth = STACK_START(p) - STACK_TOP(p);			\
-        dtrace_fun_decode(p, m, f, a,					\
-                          process_name, mfa);				\
-        DTRACE3(global_function_entry, process_name, mfa, depth);	\
+        dtrace_fun_decode(p, mfa, process_name, mfa_buf);               \
+        DTRACE3(global_function_entry, process_name, mfa_buf, depth);	\
     }
 
-#define DTRACE_RETURN(p, m, f, a)                               \
+#define DTRACE_RETURN(p, mfa)                                    \
     if (DTRACE_ENABLED(function_return)) {                      \
         DTRACE_CHARBUF(process_name, DTRACE_TERM_BUF_SIZE);     \
-        DTRACE_CHARBUF(mfa, DTRACE_TERM_BUF_SIZE);              \
+        DTRACE_CHARBUF(mfa_buf, DTRACE_TERM_BUF_SIZE);          \
         int depth = STACK_START(p) - STACK_TOP(p);              \
-        dtrace_fun_decode(p, m, f, a,                           \
-                          process_name, mfa);                   \
-        DTRACE3(function_return, process_name, mfa, depth);     \
+        dtrace_fun_decode(p, mfa, process_name, mfa_buf);       \
+        DTRACE3(function_return, process_name, mfa_buf, depth); \
     }
 
-#define DTRACE_BIF_ENTRY(p, m, f, a)                            \
-    if (DTRACE_ENABLED(bif_entry)) {                            \
-        DTRACE_CHARBUF(process_name, DTRACE_TERM_BUF_SIZE);     \
-        DTRACE_CHARBUF(mfa, DTRACE_TERM_BUF_SIZE);              \
-        dtrace_fun_decode(p, m, f, a,                           \
-                          process_name, mfa);                   \
-        DTRACE2(bif_entry, process_name, mfa);                  \
+#define DTRACE_BIF_ENTRY(p, mfa)                                    \
+    if (DTRACE_ENABLED(bif_entry)) {                                \
+        DTRACE_CHARBUF(process_name, DTRACE_TERM_BUF_SIZE);         \
+        DTRACE_CHARBUF(mfa_buf, DTRACE_TERM_BUF_SIZE);              \
+        dtrace_fun_decode(p, mfa, process_name, mfa_buf);           \
+        DTRACE2(bif_entry, process_name, mfa_buf);                  \
     }
 
-#define DTRACE_BIF_RETURN(p, m, f, a)                           \
-    if (DTRACE_ENABLED(bif_return)) {                           \
-        DTRACE_CHARBUF(process_name, DTRACE_TERM_BUF_SIZE);     \
-        DTRACE_CHARBUF(mfa, DTRACE_TERM_BUF_SIZE);              \
-        dtrace_fun_decode(p, m, f, a,                           \
-                          process_name, mfa);                   \
-        DTRACE2(bif_return, process_name, mfa);                 \
+#define DTRACE_BIF_RETURN(p, mfa)                                   \
+    if (DTRACE_ENABLED(bif_return)) {                               \
+        DTRACE_CHARBUF(process_name, DTRACE_TERM_BUF_SIZE);         \
+        DTRACE_CHARBUF(mfa_buf, DTRACE_TERM_BUF_SIZE);              \
+        dtrace_fun_decode(p, mfa, process_name, mfa_buf);           \
+        DTRACE2(bif_return, process_name, mfa_buf);                 \
     }
 
-#define DTRACE_NIF_ENTRY(p, m, f, a)                            \
-    if (DTRACE_ENABLED(nif_entry)) {                            \
-        DTRACE_CHARBUF(process_name, DTRACE_TERM_BUF_SIZE);     \
-        DTRACE_CHARBUF(mfa, DTRACE_TERM_BUF_SIZE);              \
-        dtrace_fun_decode(p, m, f, a,                           \
-                          process_name, mfa);                   \
-        DTRACE2(nif_entry, process_name, mfa);                  \
+#define DTRACE_NIF_ENTRY(p, mfa)                                        \
+    if (DTRACE_ENABLED(nif_entry)) {                                    \
+        DTRACE_CHARBUF(process_name, DTRACE_TERM_BUF_SIZE);             \
+        DTRACE_CHARBUF(mfa_buf, DTRACE_TERM_BUF_SIZE);                  \
+        dtrace_fun_decode(p, mfa, process_name, mfa_buf);               \
+        DTRACE2(nif_entry, process_name, mfa_buf);                      \
     }
 
-#define DTRACE_NIF_RETURN(p, m, f, a)                           \
-    if (DTRACE_ENABLED(nif_return)) {                           \
-        DTRACE_CHARBUF(process_name, DTRACE_TERM_BUF_SIZE);     \
-        DTRACE_CHARBUF(mfa, DTRACE_TERM_BUF_SIZE);              \
-        dtrace_fun_decode(p, m, f, a,                           \
-                          process_name, mfa);                   \
-        DTRACE2(nif_return, process_name, mfa);                 \
+#define DTRACE_NIF_RETURN(p, mfa)                                       \
+    if (DTRACE_ENABLED(nif_return)) {                                   \
+        DTRACE_CHARBUF(process_name, DTRACE_TERM_BUF_SIZE);             \
+        DTRACE_CHARBUF(mfa_mfa, DTRACE_TERM_BUF_SIZE);                  \
+        dtrace_fun_decode(p, mfa, process_name, mfa_buf);               \
+        DTRACE2(nif_return, process_name, mfa_buf);                     \
     }
 
 #define DTRACE_GLOBAL_CALL_FROM_EXPORT(p,e)                                                    \
     do {                                                                                       \
         if (DTRACE_ENABLED(global_function_entry)) {                                           \
             BeamInstr* fp = (BeamInstr *) (((Export *) (e))->addressv[erts_active_code_ix()]); \
-            DTRACE_GLOBAL_CALL((p), (Eterm)fp[-3], (Eterm)fp[-2], fp[-1]);                     \
+            DTRACE_GLOBAL_CALL((p), erts_code_to_codemfa(fp));          \
         }                                                                                      \
     } while(0)
 
 #define DTRACE_RETURN_FROM_PC(p)                                                        \
     do {                                                                                \
-        BeamInstr* fp;                                                                  \
-        if (DTRACE_ENABLED(function_return) && (fp = find_function_from_pc((p)->cp))) { \
-            DTRACE_RETURN((p), (Eterm)fp[0], (Eterm)fp[1], (Uint)fp[2]);                \
+        ErtsCodeInfo* ci;                                                                  \
+        if (DTRACE_ENABLED(function_return) && (ci = find_function_from_pc((p)->cp))) { \
+            DTRACE_RETURN((p), &ci->mfa);                               \
         }                                                                               \
     } while(0)
 
 #else /* USE_VM_PROBES */
-#define DTRACE_LOCAL_CALL(p, m, f, a)        do {} while (0)
-#define DTRACE_GLOBAL_CALL(p, m, f, a)       do {} while (0)
+#define DTRACE_LOCAL_CALL(p, mfa)        do {} while (0)
+#define DTRACE_GLOBAL_CALL(p, mfa)       do {} while (0)
 #define DTRACE_GLOBAL_CALL_FROM_EXPORT(p, e) do {} while (0)
-#define DTRACE_RETURN(p, m, f, a)            do {} while (0)
+#define DTRACE_RETURN(p, mfa)            do {} while (0)
 #define DTRACE_RETURN_FROM_PC(p)             do {} while (0)
-#define DTRACE_BIF_ENTRY(p, m, f, a)         do {} while (0)
-#define DTRACE_BIF_RETURN(p, m, f, a)        do {} while (0)
-#define DTRACE_NIF_ENTRY(p, m, f, a)         do {} while (0)
-#define DTRACE_NIF_RETURN(p, m, f, a)        do {} while (0)
+#define DTRACE_BIF_ENTRY(p, mfa)         do {} while (0)
+#define DTRACE_BIF_RETURN(p, mfa)        do {} while (0)
+#define DTRACE_NIF_ENTRY(p, mfa)         do {} while (0)
+#define DTRACE_NIF_RETURN(p, mfa)        do {} while (0)
 #endif /* USE_VM_PROBES */
 
 #ifdef DEBUG
@@ -1324,8 +1317,8 @@ void process_main(Eterm * x_reg_array, FloatDef* f_reg_array)
     if (start_time != 0) {
         Sint64 diff = erts_timestamp_millis() - start_time;
 	if (diff > 0 && (Uint) diff >  erts_system_monitor_long_schedule) {
-	    BeamInstr *inptr = find_function_from_pc(start_time_i);
-	    BeamInstr *outptr = find_function_from_pc(c_p->i);
+	    ErtsCodeInfo *inptr = find_function_from_pc(start_time_i);
+	    ErtsCodeInfo *outptr = find_function_from_pc(c_p->i);
 	    monitor_long_schedule_proc(c_p,inptr,outptr,(Uint) diff);
 	}
     }
@@ -1583,7 +1576,7 @@ void process_main(Eterm * x_reg_array, FloatDef* f_reg_array)
  /* FALL THROUGH */
  OpCase(i_call_only_f): {
      SET_I((BeamInstr *) Arg(0));
-     DTRACE_LOCAL_CALL(c_p, (Eterm)I[-3], (Eterm)I[-2], I[-1]);
+     DTRACE_LOCAL_CALL(c_p, erts_code_to_codemfa(I));
      Dispatch();
  }
 
@@ -1595,7 +1588,7 @@ void process_main(Eterm * x_reg_array, FloatDef* f_reg_array)
      RESTORE_CP(E);
      E = ADD_BYTE_OFFSET(E, Arg(1));
      SET_I((BeamInstr *) Arg(0));
-     DTRACE_LOCAL_CALL(c_p, (Eterm)I[-3], (Eterm)I[-2], I[-1]);
+     DTRACE_LOCAL_CALL(c_p, erts_code_to_codemfa(I));
      Dispatch();
  }
 
@@ -1607,7 +1600,7 @@ void process_main(Eterm * x_reg_array, FloatDef* f_reg_array)
  OpCase(i_call_f): {
      SET_CP(c_p, I+2);
      SET_I((BeamInstr *) Arg(0));
-     DTRACE_LOCAL_CALL(c_p, (Eterm)I[-3], (Eterm)I[-2], I[-1]);
+     DTRACE_LOCAL_CALL(c_p, erts_code_to_codemfa(I));
      Dispatch();
  }
 
@@ -2834,25 +2827,27 @@ do {						\
 	Eterm result;
 	BeamInstr *next;
 	ErlHeapFragment *live_hf_end;
+        Export *export = (Export*)Arg(0);
 
 
         if (!((FCALLS - 1) > 0 || (FCALLS-1) > neg_o_reds)) {
             /* If we have run out of reductions, we do a context
                switch before calling the bif */
-            c_p->arity = ((Export *)Arg(0))->code[2];
-            c_p->current = ((Export *)Arg(0))->code;
+            c_p->arity = GET_BIF_ARITY(export);
+            c_p->current = &export->info.mfa;
             goto context_switch3;
         }
 
-        ERTS_MSACC_SET_BIF_STATE_CACHED_X(GET_BIF_MODULE(Arg(0)), GET_BIF_ADDRESS(Arg(0)));
+        ERTS_MSACC_SET_BIF_STATE_CACHED_X(
+            GET_BIF_MODULE(export), GET_BIF_ADDRESS(export));
 
-	bf = GET_BIF_ADDRESS(Arg(0));
+	bf = GET_BIF_ADDRESS(export);
 
 	PRE_BIF_SWAPOUT(c_p);
 	ERTS_DBG_CHK_REDS(c_p, FCALLS);
 	c_p->fcalls = FCALLS - 1;
 	if (FCALLS <= 0) {
-	   save_calls(c_p, (Export *) Arg(0));
+	   save_calls(c_p, export);
 	}
 	PreFetch(1, next);
 	ASSERT(!ERTS_PROC_IS_EXITING(c_p));
@@ -2866,7 +2861,7 @@ do {						\
 	ERTS_HOLE_CHECK(c_p);
 	ERTS_SMP_REQ_PROC_MAIN_LOCK(c_p);
 	if (ERTS_IS_GC_DESIRED(c_p)) {
-	    Uint arity = ((Export *)Arg(0))->code[2];
+	    Uint arity = GET_BIF_ARITY(export);
 	    result = erts_gc_after_bif_call_lhf(c_p, live_hf_end, result, reg, arity);
 	    E = c_p->stop;
 	}
@@ -3359,14 +3354,15 @@ do {						\
      * called from I[-3], I[-2], and I[-1] respectively.
      */
  context_switch_fun:
-    c_p->arity = I[-1] + 1;
+    /* Add one for the environment of the fun */
+    c_p->arity = erts_code_to_codemfa(I)->arity + 1;
     goto context_switch2;
 
  context_switch:
-    c_p->arity = I[-1];
+    c_p->arity = erts_code_to_codemfa(I)->arity;
 
- context_switch2:		/* Entry for fun calls. */
-    c_p->current = I-3;		/* Pointer to Mod, Func, Arity */
+ context_switch2: 		/* Entry for fun calls. */
+    c_p->current = erts_code_to_codemfa(I);
 
  context_switch3:
 
@@ -3507,7 +3503,8 @@ do {						\
      * code[4]: Not used
      */
     HEAVY_SWAPOUT;
-    I = call_error_handler(c_p, I-3, reg, am_undefined_function);
+    I = call_error_handler(c_p, erts_code_to_codemfa(I),
+                           reg, am_undefined_function);
     HEAVY_SWAPIN;
     if (I) {
 	Goto(*I);
@@ -3544,9 +3541,12 @@ do {						\
 	     * I[1]: Function pointer to NIF function
 	     * I[2]: Pointer to erl_module_nif
 	     * I[3]: Function pointer to dirty NIF
+             *
+             * This layout is determined by the NifExport struct
 	     */
 	    BifFunction vbf;
 	    ErlHeapFragment *live_hf_end;
+            ErtsCodeMFA *codemfa;
 
             if (!((FCALLS - 1) > 0 || (FCALLS - 1) > neg_o_reds)) {
                 /* If we have run out of reductions, we do a context
@@ -3556,12 +3556,16 @@ do {						\
 
 	    ERTS_MSACC_SET_STATE_CACHED_M_X(ERTS_MSACC_STATE_NIF);
 
-	    DTRACE_NIF_ENTRY(c_p, (Eterm)I[-3], (Eterm)I[-2], (Uint)I[-1]);
-	    c_p->current = I-3; /* current and vbf set to please handle_error */ 
+	    codemfa = erts_code_to_codemfa(I);
+
+            c_p->current = codemfa; /* current and vbf set to please handle_error */
+
+	    DTRACE_NIF_ENTRY(c_p, codemfa);
+
 	    SWAPOUT;
 	    c_p->fcalls = FCALLS - 1;
 	    PROCESS_MAIN_CHK_LOCKS(c_p);
-	    bif_nif_arity = I[-1];
+	    bif_nif_arity = codemfa->arity;
 	    ERTS_SMP_UNREQ_PROC_MAIN_LOCK(c_p);
 
 	    ASSERT(!ERTS_PROC_IS_EXITING(c_p));
@@ -3588,19 +3592,19 @@ do {						\
 		ASSERT(!ERTS_PROC_IS_EXITING(c_p));
 	    }
 
-	    DTRACE_NIF_RETURN(c_p, (Eterm)I[-3], (Eterm)I[-2], (Uint)I[-1]);
+	    DTRACE_NIF_RETURN(c_p, codemfa);
 	    goto apply_bif_or_nif_epilogue;
 	 
 	OpCase(apply_bif):
 	    /*
-	     * At this point, I points to the code[3] in the export entry for
+	     * At this point, I points to the code[0] in the export entry for
 	     * the BIF:
 	     *
-	     * code[0]: Module
-	     * code[1]: Function
-	     * code[2]: Arity
-	     * code[3]: &&apply_bif
-	     * code[4]: Function pointer to BIF function
+	     * code[-3]: Module
+	     * code[-2]: Function
+	     * code[-1]: Arity
+	     * code[0]: &&apply_bif
+	     * code[1]: Function pointer to BIF function
 	     */
 
             if (!((FCALLS - 1) > 0 || (FCALLS - 1) > neg_o_reds)) {
@@ -3609,21 +3613,25 @@ do {						\
                 goto context_switch;
             }
 
-            ERTS_MSACC_SET_BIF_STATE_CACHED_X((Eterm)I[-3], (BifFunction)Arg(0));
+	    codemfa = erts_code_to_codemfa(I);
+
+            ERTS_MSACC_SET_BIF_STATE_CACHED_X(codemfa->module, (BifFunction)Arg(0));
+
 
-	    c_p->current = I-3;	/* In case we apply process_info/1,2 or load_nif/1 */
+            /* In case we apply process_info/1,2 or load_nif/1 */
+	    c_p->current = codemfa;
 	    c_p->i = I;		/* In case we apply check_process_code/2. */
 	    c_p->arity = 0;		/* To allow garbage collection on ourselves
 					 * (check_process_code/2).
 					 */
-	    DTRACE_BIF_ENTRY(c_p, (Eterm)I[-3], (Eterm)I[-2], (Uint)I[-1]);
+	    DTRACE_BIF_ENTRY(c_p, codemfa);
 
 	    SWAPOUT;
 	    ERTS_DBG_CHK_REDS(c_p, FCALLS - 1);
 	    c_p->fcalls = FCALLS - 1;
 	    vbf = (BifFunction) Arg(0);
 	    PROCESS_MAIN_CHK_LOCKS(c_p);
-	    bif_nif_arity = I[-1];
+	    bif_nif_arity = codemfa->arity;
             ASSERT(bif_nif_arity <= 4);
 	    ERTS_SMP_UNREQ_PROC_MAIN_LOCK(c_p);
 	    ERTS_VERIFY_UNUSED_TEMP_ALLOC(c_p);
@@ -3645,7 +3653,7 @@ do {						\
             if (ERTS_MSACC_IS_ENABLED_CACHED_X())
                 ERTS_MSACC_UPDATE_CACHE_X();
 	    ERTS_MSACC_SET_STATE_CACHED_M_X(ERTS_MSACC_STATE_EMULATOR);
-	    DTRACE_BIF_RETURN(c_p, (Eterm)I[-3], (Eterm)I[-2], (Uint)I[-1]);
+	    DTRACE_BIF_RETURN(c_p, codemfa);
 
 	apply_bif_or_nif_epilogue:
 	    ERTS_SMP_REQ_PROC_MAIN_LOCK(c_p);
@@ -3712,8 +3720,9 @@ do {						\
     goto find_func_info;
 
  OpCase(i_func_info_IaaI): {
+     ErtsCodeInfo *ci = (ErtsCodeInfo*)I;
      c_p->freason = EXC_FUNCTION_CLAUSE;
-     c_p->current = I + 2;
+     c_p->current = &ci->mfa;
      goto handle_error;
  }
 
@@ -4704,11 +4713,11 @@ do {						\
      */
 
  OpCase(return_trace): {
-     BeamInstr* code = (BeamInstr *) (UWord) E[0];
+     ErtsCodeMFA* mfa = (ErtsCodeMFA *)(E[0]);
      
      SWAPOUT;		/* Needed for shared heap */
      ERTS_SMP_UNREQ_PROC_MAIN_LOCK(c_p);
-     erts_trace_return(c_p, code, r(0), ERTS_TRACER_FROM_ETERM(E+1)/* tracer */);
+     erts_trace_return(c_p, mfa, r(0), ERTS_TRACER_FROM_ETERM(E+1)/* tracer */);
      ERTS_SMP_REQ_PROC_MAIN_LOCK(c_p);
      SWAPIN;
      c_p->cp = NULL;
@@ -4719,9 +4728,8 @@ do {						\
 
  OpCase(i_generic_breakpoint): {
      BeamInstr real_I;
-     ASSERT(I[-5] == (BeamInstr) BeamOp(op_i_func_info_IaaI));
      HEAVY_SWAPOUT;
-     real_I = erts_generic_breakpoint(c_p, I, reg);
+     real_I = erts_generic_breakpoint(c_p, erts_code_to_codeinfo(I), reg);
      HEAVY_SWAPIN;
      ASSERT(VALID_INSTR(real_I));
      Goto(real_I);
@@ -4730,7 +4738,7 @@ do {						\
  OpCase(i_return_time_trace): {
      BeamInstr *pc = (BeamInstr *) (UWord) E[0];
      SWAPOUT;
-     erts_trace_time_return(c_p, pc);
+     erts_trace_time_return(c_p, erts_code_to_codeinfo(pc));
      SWAPIN;
      c_p->cp = NULL;
      SET_I((BeamInstr *) cp_val(E[1]));
@@ -4915,16 +4923,18 @@ do {						\
 	  * I[ 0]: &&lb_hipe_trap_call
 	  * ... remainder of original BEAM code
 	  */
-	 ASSERT(I[-5] == (Uint) OpCode(i_func_info_IaaI));
-	 c_p->hipe.u.ncallee = (void(*)(void)) I[-4];
+         ErtsCodeInfo *ci = erts_code_to_codeinfo(I);
+	 ASSERT(ci->op == (Uint) OpCode(i_func_info_IaaI));
+	 c_p->hipe.u.ncallee = (void(*)(void)) ci->native;
 	 ++hipe_trap_count;
-	 HIPE_MODE_SWITCH(HIPE_MODE_SWITCH_CMD_CALL | (I[-1] << 8));
+	 HIPE_MODE_SWITCH(HIPE_MODE_SWITCH_CMD_CALL | (ci->mfa.arity << 8));
      }
      OpCase(hipe_trap_call_closure): {
-       ASSERT(I[-5] == (Uint) OpCode(i_func_info_IaaI));
-       c_p->hipe.u.ncallee = (void(*)(void)) I[-4];
+       ErtsCodeInfo *ci = erts_code_to_codeinfo(I);
+       ASSERT(ci->op == (Uint) OpCode(i_func_info_IaaI));
+       c_p->hipe.u.ncallee = (void(*)(void)) ci->native;
        ++hipe_trap_count;
-       HIPE_MODE_SWITCH(HIPE_MODE_SWITCH_CMD_CALL_CLOSURE | (I[-1] << 8));
+       HIPE_MODE_SWITCH(HIPE_MODE_SWITCH_CMD_CALL_CLOSURE | (ci->mfa.arity << 8));
      }
      OpCase(hipe_trap_return): {
 	 HIPE_MODE_SWITCH(HIPE_MODE_SWITCH_CMD_RETURN);
@@ -4993,8 +5003,9 @@ do {						\
       * I[ 0]: &&lb_hipe_call_count
       * ... remainder of original BEAM code
       */
-     struct hipe_call_count *hcc = (struct hipe_call_count*)I[-4];
-     ASSERT(I[-5] == (Uint) OpCode(i_func_info_IaaI));
+     ErtsCodeInfo *ci = erts_code_to_codeinfo(I);
+     struct hipe_call_count *hcc = (struct hipe_call_count*)ci->native;
+     ASSERT(ci->op == (Uint) OpCode(i_func_info_IaaI));
      ASSERT(hcc != NULL);
      ASSERT(VALID_INSTR(hcc->opcode));
      ++(hcc->count);
@@ -5063,7 +5074,7 @@ do {						\
 
  OpCase(i_debug_breakpoint): {
      HEAVY_SWAPOUT;
-     I = call_error_handler(c_p, I-3, reg, am_breakpoint);
+     I = call_error_handler(c_p, erts_code_to_codemfa(I), reg, am_breakpoint);
      HEAVY_SWAPIN;
      if (I) {
 	 Goto(*I);
@@ -5136,10 +5147,10 @@ do {						\
 			      bif_table[i].name,
 			      bif_table[i].arity);
 	 bif_export[i] = ep;
-	 ep->code[3] = (BeamInstr) OpCode(apply_bif);
-	 ep->code[4] = (BeamInstr) bif_table[i].f;
+	 ep->code[0] = (BeamInstr) OpCode(apply_bif);
+	 ep->code[1] = (BeamInstr) bif_table[i].f;
 	 /* XXX: set func info for bifs */
-	 ep->fake_op_func_info_for_hipe[0] = (BeamInstr) BeamOp(op_i_func_info_IaaI);
+	 ep->info.op = (BeamInstr) BeamOp(op_i_func_info_IaaI);
      }
 
      return;
@@ -5219,8 +5230,8 @@ void erts_dirty_process_main(ErtsSchedulerData *esdp)
     goto do_dirty_schedule;
 
  context_switch:
-    c_p->arity = I[-1];
-    c_p->current = I-3;		/* Pointer to Mod, Func, Arity */
+    c_p->current = erts_code_to_codemfa(I);	/* Pointer to Mod, Func, Arity */
+    c_p->arity = c_p->current->arity;
 
     {
 	int reds_used;
@@ -5378,16 +5389,22 @@ void erts_dirty_process_main(ErtsSchedulerData *esdp)
 	     * I[1]: Function pointer to NIF function
 	     * I[2]: Pointer to erl_module_nif
 	     * I[3]: Function pointer to dirty NIF
+             *
+             * This layout is determined by the NifExport struct
 	     */
 	    BifFunction vbf;
+            ErtsCodeMFA *codemfa;
 
 	    ERTS_MSACC_SET_STATE_CACHED_M_X(ERTS_MSACC_STATE_NIF);
 
-	    DTRACE_NIF_ENTRY(c_p, (Eterm)I[-3], (Eterm)I[-2], (Uint)I[-1]);
-	    c_p->current = I-3; /* current and vbf set to please handle_error */
+            codemfa = erts_code_to_codemfa(I);
+
+	    DTRACE_NIF_ENTRY(c_p, codemfa);
+            /* current and vbf set to please handle_error */
+	    c_p->current = codemfa;
 	    SWAPOUT;
 	    PROCESS_MAIN_CHK_LOCKS(c_p);
-	    arity = I[-1];
+	    arity = codemfa->arity;
 	    ERTS_SMP_UNREQ_PROC_MAIN_LOCK(c_p);
 
 	    ASSERT(!ERTS_PROC_IS_EXITING(c_p));
@@ -5422,7 +5439,7 @@ void erts_dirty_process_main(ErtsSchedulerData *esdp)
 		ASSERT(!ERTS_PROC_IS_EXITING(c_p));
 	    }
 
-	    DTRACE_NIF_RETURN(c_p, (Eterm)I[-3], (Eterm)I[-2], (Uint)I[-1]);
+	    DTRACE_NIF_RETURN(c_p, codemfa);
 	    ERTS_HOLE_CHECK(c_p);
 	    SWAPIN;
 	    I = c_p->i;
@@ -5602,7 +5619,8 @@ next_catch(Process* c_p, Eterm *reg) {
 	/* Can not follow cp here - code may be unloaded */
 	BeamInstr *cpp = c_p->cp;
 	if (cpp == beam_exception_trace) {
-	    erts_trace_exception(c_p, cp_val(ptr[0]),
+            ErtsCodeMFA *mfa = (ErtsCodeMFA*)cp_val(ptr[0]);
+	    erts_trace_exception(c_p, mfa,
 				 reg[1], reg[2],
                                  ERTS_TRACER_FROM_ETERM(ptr+1));
 	    /* Skip return_trace parameters */
@@ -5630,7 +5648,8 @@ next_catch(Process* c_p, Eterm *reg) {
 		    if (is_catch(*ptr) && active_catches) goto found_catch;
 		}
 		if (cp_val(*prev) == beam_exception_trace) {
-		    erts_trace_exception(c_p, cp_val(ptr[0]),
+                    ErtsCodeMFA *mfa = (ErtsCodeMFA*)cp_val(ptr[0]);
+		    erts_trace_exception(c_p, mfa,
 					 reg[1], reg[2],
                                          ERTS_TRACER_FROM_ETERM(ptr+1));
 		}
@@ -5836,7 +5855,7 @@ save_stacktrace(Process* c_p, BeamInstr* pc, Eterm* reg, BifFunction bf,
 	for (i = 0; i < BIF_SIZE; i++) {
 	    if (bf == bif_table[i].f || bf == bif_table[i].traced) {
 		Export *ep = bif_export[i];
-		s->current = ep->code;
+		s->current = &ep->info.mfa;
 	        a = bif_table[i].arity;
 		break;
 	    }
@@ -5850,7 +5869,7 @@ save_stacktrace(Process* c_p, BeamInstr* pc, Eterm* reg, BifFunction bf,
 	     */
 	    ASSERT(c_p->current);
 	    s->current = c_p->current;
-	    a = s->current[2];
+	    a = s->current->arity;
 	}
 	/* Save first stack entry */
 	ASSERT(pc);
@@ -5875,7 +5894,7 @@ save_stacktrace(Process* c_p, BeamInstr* pc, Eterm* reg, BifFunction bf,
 	     (GET_EXC_INDEX(EXC_FUNCTION_CLAUSE)) ) {
 	    int a;
 	    ASSERT(s->current);
-	    a = s->current[2];
+	    a = s->current->arity;
 	    args = make_arglist(c_p, reg, a); /* Overwrite CAR(c_p->ftrace) */
 	    /* Save first stack entry */
 	    ASSERT(c_p->cp);
@@ -6046,7 +6065,7 @@ build_stacktrace(Process* c_p, Eterm exc) {
 	erts_lookup_function_info(&fi, s->pc, 1);
     } else if (GET_EXC_INDEX(s->freason) ==
 	       GET_EXC_INDEX(EXC_FUNCTION_CLAUSE)) {
-	erts_lookup_function_info(&fi, s->current, 1);
+	erts_lookup_function_info(&fi, erts_codemfa_to_code(s->current), 1);
     } else {
 	erts_set_current_function(&fi, s->current);
     }
@@ -6055,8 +6074,8 @@ build_stacktrace(Process* c_p, Eterm exc) {
      * If fi.current is still NULL, default to the initial function
      * (e.g. spawn_link(erlang, abs, [1])).
      */
-    if (fi.current == NULL) {
-	erts_set_current_function(&fi, c_p->u.initial);
+    if (fi.ci == NULL) {
+	erts_set_current_function(&fi, &c_p->u.initial);
 	args = am_true; /* Just in case */
     } else {
 	args = get_args_from_exc(exc);
@@ -6072,7 +6091,7 @@ build_stacktrace(Process* c_p, Eterm exc) {
     heap_size = fi.needed + 2;
     for (i = 0; i < depth; i++) {
 	erts_lookup_function_info(stkp, s->trace[i], 1);
-	if (stkp->current) {
+	if (stkp->ci) {
 	    heap_size += stkp->needed + 2;
 	    stkp++;
 	}
@@ -6096,7 +6115,7 @@ build_stacktrace(Process* c_p, Eterm exc) {
 }
 
 static BeamInstr*
-call_error_handler(Process* p, BeamInstr* fi, Eterm* reg, Eterm func)
+call_error_handler(Process* p, ErtsCodeMFA* mfa, Eterm* reg, Eterm func)
 {
     Eterm* hp;
     Export* ep;
@@ -6111,7 +6130,7 @@ call_error_handler(Process* p, BeamInstr* fi, Eterm* reg, Eterm func)
     ep = erts_find_function(erts_proc_get_error_handler(p), func, 3,
 			    erts_active_code_ix());
     if (ep == NULL) {		/* No error handler */
-	p->current = fi;
+	p->current = mfa;
 	p->freason = EXC_UNDEF;
 	return 0;
     }
@@ -6120,7 +6139,7 @@ call_error_handler(Process* p, BeamInstr* fi, Eterm* reg, Eterm func)
      * Create a list with all arguments in the x registers.
      */
 
-    arity = fi[2];
+    arity = mfa->arity;
     sz = 2 * arity;
     if (HeapWordsLeft(p) < sz) {
 	erts_garbage_collect(p, sz, reg, arity);
@@ -6136,8 +6155,8 @@ call_error_handler(Process* p, BeamInstr* fi, Eterm* reg, Eterm func)
     /*
      * Set up registers for call to error_handler:<func>/3.
      */
-    reg[0] = fi[0];
-    reg[1] = fi[1];
+    reg[0] = mfa->module;
+    reg[1] = mfa->function;
     reg[2] = args;
     return ep->addressv[erts_active_code_ix()];
 }
@@ -6433,7 +6452,7 @@ erts_hibernate(Process* c_p, Eterm module, Eterm function, Eterm args, Eterm* re
 	ASSERT(!ERTS_PROC_IS_EXITING(c_p));
     }
     erts_smp_proc_unlock(c_p, ERTS_PROC_LOCK_MSGQ|ERTS_PROC_LOCK_STATUS);
-    c_p->current = bif_export[BIF_hibernate_3]->code;
+    c_p->current = &bif_export[BIF_hibernate_3]->info.mfa;
     c_p->flags |= F_HIBERNATE_SCHED; /* Needed also when woken! */
     return 1;
 }
@@ -6456,21 +6475,15 @@ call_fun(Process* p,		/* Current process. */
 
     if (is_fun_header(hdr)) {
 	ErlFunThing* funp = (ErlFunThing *) fun_val(fun);
-	ErlFunEntry* fe;
-	BeamInstr* code_ptr;
+	ErlFunEntry* fe = funp->fe;
+	BeamInstr* code_ptr = fe->address;
 	Eterm* var_ptr;
-	int actual_arity;
-	unsigned num_free;
-
-	fe = funp->fe;
-	num_free = funp->num_free;
-	code_ptr = fe->address;
-	actual_arity = (int) code_ptr[-1];
+	unsigned num_free = funp->num_free;
+        ErtsCodeMFA *mfa = erts_code_to_codemfa(code_ptr);
+	int actual_arity = mfa->arity;
 
 	if (actual_arity == arity+num_free) {
-	    DTRACE_LOCAL_CALL(p, (Eterm)code_ptr[-3],
-			(Eterm)code_ptr[-2],
-			code_ptr[-1]);
+	    DTRACE_LOCAL_CALL(p, mfa);
 	    if (num_free == 0) {
 		return code_ptr;
 	    } else {
@@ -6575,10 +6588,10 @@ call_fun(Process* p,		/* Current process. */
 	int actual_arity;
 
 	ep = *((Export **) (export_val(fun) + 1));
-	actual_arity = (int) ep->code[2];
+	actual_arity = ep->info.mfa.arity;
 
 	if (arity == actual_arity) {
-	    DTRACE_GLOBAL_CALL(p, ep->code[0], ep->code[1], (Uint)ep->code[2]);
+	    DTRACE_GLOBAL_CALL(p, &ep->info.mfa);
 	    return ep->addressv[erts_active_code_ix()];
 	} else {
 	    /*
@@ -7199,15 +7212,15 @@ erts_is_builtin(Eterm Mod, Eterm Name, int arity)
 	return 1;
     }
 
-    e.code[0] = Mod;
-    e.code[1] = Name;
-    e.code[2] = arity;
+    e.info.mfa.module = Mod;
+    e.info.mfa.function = Name;
+    e.info.mfa.arity = arity;
 
     if ((ep = export_get(&e)) == NULL) {
 	return 0;
     }
-    return ep->addressv[erts_active_code_ix()] == ep->code+3
-	&& (ep->code[3] == (BeamInstr) em_apply_bif);
+    return ep->addressv[erts_active_code_ix()] == ep->code
+	&& (ep->code[0] == (BeamInstr) em_apply_bif);
 }
 
 
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index d69b18e22f..c822cd8606 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -806,21 +806,21 @@ erts_finish_loading(Binary* magic, Process* c_p,
 
 	for (i = 0; i < export_list_size(code_ix); i++) {
 	    Export *ep = export_list(i, code_ix);
-	    if (ep == NULL || ep->code[0] != module) {
+	    if (ep == NULL || ep->info.mfa.module != module) {
 		continue;
 	    }
-	    if (ep->addressv[code_ix] == ep->code+3) {
-		if (ep->code[3] == (BeamInstr) em_apply_bif) {
+	    if (ep->addressv[code_ix] == ep->code) {
+		if (ep->code[0] == (BeamInstr) em_apply_bif) {
 		    continue;
-		} else if (ep->code[3] ==
+		} else if (ep->code[0] ==
 			   (BeamInstr) BeamOp(op_i_generic_breakpoint)) {
 		    ERTS_SMP_LC_ASSERT(erts_smp_thr_progress_is_blocking());
 		    ASSERT(mod_tab_p->curr.num_traced_exports > 0);
-		    erts_clear_export_break(mod_tab_p, ep->code+3);
-		    ep->addressv[code_ix] = (BeamInstr *) ep->code[4];
-		    ep->code[4] = 0;
+		    erts_clear_export_break(mod_tab_p, &ep->info);
+		    ep->addressv[code_ix] = (BeamInstr *) ep->code[1];
+		    ep->code[1] = 0;
 		}
-		ASSERT(ep->code[4] == 0);
+		ASSERT(ep->code[1] == 0);
 	    }
 	}
 	ASSERT(mod_tab_p->curr.num_breakpoints == 0);
@@ -1420,8 +1420,8 @@ load_import_table(LoaderState* stp)
 	 * the BIF function.
 	 */
 	if ((e = erts_active_export_entry(mod, func, arity)) != NULL) {
-	    if (e->code[3] == (BeamInstr) em_apply_bif) {
-		stp->import[i].bf = (BifFunction) e->code[4];
+	    if (e->code[0] == (BeamInstr) em_apply_bif) {
+		stp->import[i].bf = (BifFunction) e->code[1];
 		if (func == am_load_nif && mod == am_erlang && arity == 2) {
 		    stp->may_load_nif = 1;
 		}
@@ -1514,7 +1514,7 @@ is_bif(Eterm mod, Eterm func, unsigned arity)
     if (e == NULL) {
 	return 0;
     }
-    if (e->code[3] != (BeamInstr) em_apply_bif) {
+    if (e->code[0] != (BeamInstr) em_apply_bif) {
 	return 0;
     }
     if (mod == am_erlang && func == am_apply && arity == 3) {
@@ -1893,7 +1893,7 @@ load_code(LoaderState* stp)
      * by both the nif functionality and line instructions.
      */
     enum {
-	FUNC_INFO_SZ = 5
+	FUNC_INFO_SZ = sizeof(ErtsCodeInfo) / sizeof(Eterm)
     };
 
     code = stp->codev;
@@ -2565,8 +2565,11 @@ load_code(LoaderState* stp)
 		stp->function = code[ci-2];
 		stp->arity = code[ci-1];
 
+                /* When this assert is triggered, it is normally a sign that
+                   the size of the ops.tab i_func_info instruction is not
+                   the same as FUNC_INFO_SZ */
 		ASSERT(stp->labels[last_label].value == ci - FUNC_INFO_SZ);
-		stp->hdr->functions[function_number] = (BeamInstr*) stp->labels[last_label].patches;
+		stp->hdr->functions[function_number] = (ErtsCodeInfo*) stp->labels[last_label].patches;
 		offset = function_number;
 		stp->labels[last_label].patches = offset;
 		function_number++;
@@ -4513,7 +4516,7 @@ freeze_code(LoaderState* stp)
      * function table in the beginning of the file.
      */
 
-    code_hdr->functions[stp->num_functions] = (codev + stp->ci - 1);
+    code_hdr->functions[stp->num_functions] = (ErtsCodeInfo*)(codev + stp->ci - 1);
     CHKBLK(ERTS_ALC_T_CODE,code_hdr);
 
     /*
@@ -4781,7 +4784,7 @@ final_touch(LoaderState* stp, struct erl_module_instance* inst_p)
 	     * callable yet. Keep any function in the current
 	     * code callable.
 	     */
-	    ep->code[4] = (BeamInstr) address;
+	    ep->code[1] = (BeamInstr) address;
 	}
     }
 
@@ -4959,7 +4962,7 @@ transform_engine(LoaderState* st)
 		if (i >= st->num_imports || st->import[i].bf == NULL)
 		    goto restart;
 		if (bif_number != -1 &&
-		    bif_export[bif_number]->code[4] != (BeamInstr) st->import[i].bf) {
+		    bif_export[bif_number]->code[1] != (BeamInstr) st->import[i].bf) {
 		    goto restart;
 		}
 	    }
@@ -5584,18 +5587,16 @@ functions_in_module(Process* p, /* Process whose heap to use. */
     hp = HAlloc(p, need);
     hp_end = hp + need;
     for (i = num_functions-1; i >= 0 ; i--) {
-	BeamInstr* func_info = code_hdr->functions[i];
-	Eterm name = (Eterm) func_info[3];
-	int arity = (int) func_info[4];
+	ErtsCodeInfo* ci = code_hdr->functions[i];
 	Eterm tuple;
 
 	/*
 	 * If the function name is [], this entry is a stub for
 	 * a BIF that should be ignored.
 	 */
-	ASSERT(is_atom(name) || is_nil(name));
-	if (is_atom(name)) {
-	    tuple = TUPLE2(hp, name, make_small(arity));
+	ASSERT(is_atom(ci->mfa.function) || is_nil(ci->mfa.function));
+	if (is_atom(ci->mfa.function)) {
+	    tuple = TUPLE2(hp, ci->mfa.function, make_small(ci->mfa.arity));
 	    hp += 3;
 	    result = CONS(hp, tuple, result);
 	    hp += 2;
@@ -5683,17 +5684,17 @@ native_addresses(Process* p, BeamCodeHeader* code_hdr)
     hp = HAlloc(p, need);
     hp_end = hp + need;
     for (i = num_functions-1; i >= 0 ; i--) {
-	BeamInstr* func_info = code_hdr->functions[i];
-	Eterm name = (Eterm) func_info[3];
-	int arity = (int) func_info[4];
+	ErtsCodeInfo *ci = code_hdr->functions[i];
 	Eterm tuple;
 
-	ASSERT(is_atom(name) || is_nil(name)); /* [] if BIF stub */
-	if (func_info[1] != 0) {
-	    Eterm addr;
-	    ASSERT(is_atom(name));
-	    addr = erts_bld_uint(&hp, NULL, func_info[1]);
-	    tuple = erts_bld_tuple(&hp, NULL, 3, name, make_small(arity), addr);
+	ASSERT(is_atom(ci->mfa.function)
+               || is_nil(ci->mfa.function)); /* [] if BIF stub */
+	if (ci->native != 0) {
+            Eterm addr;
+	    ASSERT(is_atom(ci->mfa.function));
+	    addr = erts_bld_uint(&hp, NULL, ci->native);
+	    tuple = erts_bld_tuple(&hp, NULL, 3, ci->mfa.function,
+                                   make_small(ci->mfa.arity), addr);
 	    result = erts_bld_cons(&hp, NULL, tuple, result);
 	}
     }
@@ -5719,11 +5720,11 @@ exported_from_module(Process* p, /* Process whose heap to use. */
     for (i = 0; i < export_list_size(code_ix); i++) {
 	Export* ep = export_list(i,code_ix);
 	
-	if (ep->code[0] == mod) {
+	if (ep->info.mfa.module == mod) {
 	    Eterm tuple;
 	    
-	    if (ep->addressv[code_ix] == ep->code+3 &&
-		ep->code[3] == (BeamInstr) em_call_error_handler) {
+	    if (ep->addressv[code_ix] == ep->code &&
+		ep->code[0] == (BeamInstr) em_call_error_handler) {
 		/* There is a call to the function, but it does not exist. */ 
 		continue;
 	    }
@@ -5733,7 +5734,8 @@ exported_from_module(Process* p, /* Process whose heap to use. */
 		hp = HAlloc(p, need);
 		hend = hp + need;
 	    }
-	    tuple = TUPLE2(hp, ep->code[1], make_small(ep->code[2]));
+	    tuple = TUPLE2(hp, ep->info.mfa.function,
+                           make_small(ep->info.mfa.arity));
 	    hp += 3;
 	    result = CONS(hp, tuple, result);
 	    hp += 2;
@@ -5807,7 +5809,6 @@ md5_of_module(Process* p, /* Process whose heap to use. */
 Eterm*
 erts_build_mfa_item(FunctionInfo* fi, Eterm* hp, Eterm args, Eterm* mfa_p)
 {
-    BeamInstr* current = fi->current;
     Eterm loc = NIL;
 
     if (fi->loc != LINE_INVALID_LOCATION) {
@@ -5817,7 +5818,7 @@ erts_build_mfa_item(FunctionInfo* fi, Eterm* hp, Eterm args, Eterm* mfa_p)
 	Eterm file_term = NIL;
 
 	if (file == 0) {
-	    Atom* ap = atom_tab(atom_val(fi->current[0]));
+	    Atom* ap = atom_tab(atom_val(fi->ci->mfa.module));
 	    file_term = buf_to_intlist(&hp, ".erl", 4, NIL);
 	    file_term = buf_to_intlist(&hp, (char*)ap->name, ap->len, file_term);
 	} else {
@@ -5836,10 +5837,12 @@ erts_build_mfa_item(FunctionInfo* fi, Eterm* hp, Eterm args, Eterm* mfa_p)
     }
 
     if (is_list(args) || is_nil(args)) {
-	*mfa_p = TUPLE4(hp, current[0], current[1], args, loc);
+	*mfa_p = TUPLE4(hp, fi->ci->mfa.module, fi->ci->mfa.function,
+                        args, loc);
     } else {
-	Eterm arity = make_small(current[2]);
-	*mfa_p = TUPLE4(hp, current[0], current[1], arity, loc);
+	Eterm arity = make_small(fi->ci->mfa.arity);
+	*mfa_p = TUPLE4(hp, fi->ci->mfa.module, fi->ci->mfa.function,
+                        arity, loc);
     }
     return hp + 5;
 }
@@ -5850,9 +5853,9 @@ erts_build_mfa_item(FunctionInfo* fi, Eterm* hp, Eterm args, Eterm* mfa_p)
  * the function.
  */
 void
-erts_set_current_function(FunctionInfo* fi, BeamInstr* current)
+erts_set_current_function(FunctionInfo* fi, ErtsCodeMFA* mfa)
 {
-    fi->current = current;
+    fi->ci = erts_code_to_codeinfo(erts_codemfa_to_code(mfa));
     fi->needed = 5;
     fi->loc = LINE_INVALID_LOCATION;
 }
@@ -5861,13 +5864,13 @@ erts_set_current_function(FunctionInfo* fi, BeamInstr* current)
 /*
  * Returns a pointer to {module, function, arity}, or NULL if not found.
  */
-BeamInstr*
+ErtsCodeInfo*
 find_function_from_pc(BeamInstr* pc)
 {
     FunctionInfo fi;
 
     erts_lookup_function_info(&fi, pc, 0);
-    return fi.current;
+    return fi.ci;
 }
 
 /*
@@ -5984,24 +5987,25 @@ code_module_md5_1(BIF_ALIST_1)
     return res;
 }
 
-#define WORDS_PER_FUNCTION 6
+#define WORDS_PER_FUNCTION (sizeof(ErtsCodeInfo) / sizeof(UWord) + 1)
 
 static BeamInstr*
-make_stub(BeamInstr* fp, Eterm mod, Eterm func, Uint arity, Uint native, BeamInstr OpCode)
+make_stub(ErtsCodeInfo* info, Eterm mod, Eterm func, Uint arity, Uint native, BeamInstr OpCode)
 {
-    fp[0] = (BeamInstr) BeamOp(op_i_func_info_IaaI);
-    fp[1] = native;
-    fp[2] = mod;
-    fp[3] = func;
-    fp[4] = arity;
+    ASSERT(WORDS_PER_FUNCTION == 6);
+    info->op = (BeamInstr) BeamOp(op_i_func_info_IaaI);
+    info->native = native;
+    info->mfa.module = mod;
+    info->mfa.function = func;
+    info->mfa.arity = arity;
 #ifdef HIPE
     if (native) {
-	fp[5] = BeamOpCode(op_move_return_n);
-	hipe_mfa_save_orig_beam_op(mod, func, arity, fp+5);
+        erts_codeinfo_to_code(info)[0] = BeamOpCode(op_move_return_n);
+	hipe_mfa_save_orig_beam_op(mod, func, arity, erts_codeinfo_to_code(info));
     }
 #endif
-    fp[5] = OpCode;
-    return fp + WORDS_PER_FUNCTION;
+    erts_codeinfo_to_code(info)[0] = OpCode;
+    return erts_codeinfo_to_code(info)+1;
 }
 
 static byte*
@@ -6060,22 +6064,19 @@ stub_read_export_table(LoaderState* stp)
 }
 
 static void
-stub_final_touch(LoaderState* stp, BeamInstr* fp)
+stub_final_touch(LoaderState* stp, ErtsCodeInfo* ci)
 {
     unsigned int i;
     unsigned int n = stp->num_exps;
-    Eterm mod = fp[2];
-    Eterm function = fp[3];
-    int arity = fp[4];
 #ifdef HIPE
     Lambda* lp;
 #endif
 
-    if (is_bif(mod, function, arity)) {
-	fp[1] = 0;
-	fp[2] = 0;
-	fp[3] = 0;
-	fp[4] = 0;
+    if (is_bif(ci->mfa.module, ci->mfa.function, ci->mfa.arity)) {
+	ci->native = 0;
+	ci->mfa.module = 0;
+	ci->mfa.function = 0;
+	ci->mfa.arity = 0;
 	return;
     }
 
@@ -6084,9 +6085,12 @@ stub_final_touch(LoaderState* stp, BeamInstr* fp)
      */
 
     for (i = 0; i < n; i++) {
-	if (stp->export[i].function == function && stp->export[i].arity == arity) {
-	    Export* ep = erts_export_put(mod, function, arity);
-	    ep->addressv[erts_staging_code_ix()] = fp+5;
+	if (stp->export[i].function == ci->mfa.function &&
+            stp->export[i].arity == ci->mfa.arity) {
+	    Export* ep = erts_export_put(ci->mfa.module,
+                                         ci->mfa.function,
+                                         ci->mfa.arity);
+	    ep->addressv[erts_staging_code_ix()] = erts_codeinfo_to_code(ci);
 	    return;
 	}
     }
@@ -6100,9 +6104,9 @@ stub_final_touch(LoaderState* stp, BeamInstr* fp)
     n = stp->num_lambdas;
     for (i = 0, lp = stp->lambdas; i < n; i++, lp++) {
         ErlFunEntry* fe = stp->lambdas[i].fe;
-	if (lp->function == function && lp->arity == arity) {
-	    fp[5] = (Eterm) BeamOpCode(op_hipe_trap_call_closure);
-            fe->address = &(fp[5]);
+	if (lp->function == ci->mfa.function && lp->arity == ci->mfa.arity) {
+	    *erts_codeinfo_to_code(ci) = (Eterm) BeamOpCode(op_hipe_trap_call_closure);
+            fe->address = erts_codeinfo_to_code(ci);
 	}
     }
 #endif
@@ -6426,20 +6430,21 @@ erts_make_stub_module(Process* p, Eterm Mod, Eterm Beam, Eterm Info)
 	 * Set the pointer and make the stub. Put a return instruction
 	 * as the body until we know what kind of trap we should put there.
 	 */
-	code_hdr->functions[i] = fp;
+	code_hdr->functions[i] = (ErtsCodeInfo*)fp;
 #ifdef HIPE
 	op = (Eterm) BeamOpCode(op_hipe_trap_call); /* Might be changed later. */
 #else
 	op = (Eterm) BeamOpCode(op_move_return_n);
 #endif
-	fp = make_stub(fp, Mod, func, arity, (Uint)native_address, op);
+	fp = make_stub((ErtsCodeInfo*)fp, Mod, func, arity,
+                       (Uint)native_address, op);
     }
 
     /*
      * Insert the last pointer and the int_code_end instruction.
      */
 
-    code_hdr->functions[i] = fp;
+    code_hdr->functions[i] = (ErtsCodeInfo*)fp;
     *fp++ = (BeamInstr) BeamOp(op_int_code_end);
 
     /*
@@ -6487,7 +6492,7 @@ erts_make_stub_module(Process* p, Eterm Mod, Eterm Beam, Eterm Info)
 
     fp = code_base;
     for (i = 0; i < n; i++) {
-	stub_final_touch(stp, fp);
+	stub_final_touch(stp, (ErtsCodeInfo*)fp);
 	fp += WORDS_PER_FUNCTION;
     }
 
diff --git a/erts/emulator/beam/beam_load.h b/erts/emulator/beam/beam_load.h
index 6be4031822..f67dfd7a81 100644
--- a/erts/emulator/beam/beam_load.h
+++ b/erts/emulator/beam/beam_load.h
@@ -37,14 +37,6 @@ typedef struct gen_op_entry {
 
 extern const GenOpEntry gen_opc[];
 
-#ifdef NO_JUMP_TABLE 
-#define BeamOp(Op) (Op)
-#else
-extern void** beam_ops;
-#define BeamOp(Op) beam_ops[(Op)]
-#endif
-
-
 extern BeamInstr beam_debug_apply[];
 extern BeamInstr* em_call_error_handler;
 extern BeamInstr* em_apply_bif;
@@ -115,7 +107,7 @@ typedef struct beam_code_header {
      * The actual loaded code (for the first function) start just beyond
      * this table.
      */
-    BeamInstr* functions[1];
+    ErtsCodeInfo* functions[1];
 
 }BeamCodeHeader;
 
diff --git a/erts/emulator/beam/beam_ranges.c b/erts/emulator/beam/beam_ranges.c
index 55342a38c6..887f80e7e3 100644
--- a/erts/emulator/beam/beam_ranges.c
+++ b/erts/emulator/beam/beam_ranges.c
@@ -221,13 +221,13 @@ erts_ranges_sz(void)
 void
 erts_lookup_function_info(FunctionInfo* fi, BeamInstr* pc, int full_info)
 {
-    BeamInstr** low;
-    BeamInstr** high;
-    BeamInstr** mid;
+    ErtsCodeInfo** low;
+    ErtsCodeInfo** high;
+    ErtsCodeInfo** mid;
     Range* rp;
     BeamCodeHeader* hdr;
 
-    fi->current = NULL;
+    fi->ci = NULL;
     fi->needed = 5;
     fi->loc = LINE_INVALID_LOCATION;
     rp = find_range(pc);
@@ -240,12 +240,12 @@ erts_lookup_function_info(FunctionInfo* fi, BeamInstr* pc, int full_info)
     high = low + hdr->num_functions;
     while (low < high) {
 	mid = low + (high-low) / 2;
-	if (pc < mid[0]) {
+	if (pc < (BeamInstr*)(mid[0])) {
 	    high = mid;
-	} else if (pc < mid[1]) {
-	    fi->current = mid[0]+2;
+	} else if (pc < (BeamInstr*)(mid[1])) {
+	    fi->ci = mid[0];
 	    if (full_info) {
-		BeamInstr** fp = hdr->functions;
+		ErtsCodeInfo** fp = hdr->functions;
 		int idx = mid - fp;
 		lookup_loc(fi, pc, hdr, idx);
 	    }
@@ -316,7 +316,7 @@ lookup_loc(FunctionInfo* fi, const BeamInstr* pc,
 	    file = LOC_FILE(fi->loc);
 	    if (file == 0) {
 		/* Special case: Module name with ".erl" appended */
-		Atom* mod_atom = atom_tab(atom_val(fi->current[0]));
+		Atom* mod_atom = atom_tab(atom_val(fi->ci->mfa.module));
 		fi->needed += 2*(mod_atom->len+4);
 	    } else {
 		Atom* ap = atom_tab(atom_val((fi->fname_ptr)[file-1]));
diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c
index 84eab5f651..324f7d4268 100644
--- a/erts/emulator/beam/bif.c
+++ b/erts/emulator/beam/bif.c
@@ -4963,13 +4963,13 @@ void erts_init_trap_export(Export* ep, Eterm m, Eterm f, Uint a,
     int i;
     sys_memset((void *) ep, 0, sizeof(Export));
     for (i=0; i<ERTS_NUM_CODE_IX; i++) {
-	ep->addressv[i] = &ep->code[3];
+	ep->addressv[i] = ep->code;
     }
-    ep->code[0] = m;
-    ep->code[1] = f;
-    ep->code[2] = a;
-    ep->code[3] = (BeamInstr) em_apply_bif;
-    ep->code[4] = (BeamInstr) bif;
+    ep->info.mfa.module = m;
+    ep->info.mfa.function = f;
+    ep->info.mfa.arity = a;
+    ep->code[0] = (BeamInstr) em_apply_bif;
+    ep->code[1] = (BeamInstr) bif;
 }
 
 void erts_init_bif(void)
diff --git a/erts/emulator/beam/bif.h b/erts/emulator/beam/bif.h
index 2203182a0d..0c85e19ef0 100644
--- a/erts/emulator/beam/bif.h
+++ b/erts/emulator/beam/bif.h
@@ -159,7 +159,7 @@ do {									\
 #define ERTS_BIF_ERROR_TRAPPED0(Proc, Reason, Bif)		\
 do {								\
     (Proc)->freason = (Reason);					\
-    (Proc)->current = (Bif)->code;				\
+    (Proc)->current = &(Bif)->info.mfa;                         \
     return THE_NON_VALUE; 					\
 } while (0)
 
@@ -167,7 +167,7 @@ do {								\
 do {								\
     Eterm* reg = erts_proc_sched_data((Proc))->x_reg_array;	\
     (Proc)->freason = (Reason);					\
-    (Proc)->current = (Bif)->code;				\
+    (Proc)->current = &(Bif)->info.mfa;                         \
     reg[0] = (Eterm) (A0);					\
     return THE_NON_VALUE; 					\
 } while (0)
@@ -176,7 +176,7 @@ do {								\
 do {								\
     Eterm* reg = erts_proc_sched_data((Proc))->x_reg_array;	\
     (Proc)->freason = (Reason);					\
-    (Proc)->current = (Bif)->code;				\
+    (Proc)->current = &(Bif)->info.mfa;                         \
     reg[0] = (Eterm) (A0);					\
     reg[1] = (Eterm) (A1);					\
     return THE_NON_VALUE; 					\
@@ -186,7 +186,7 @@ do {								\
 do {								\
     Eterm* reg = erts_proc_sched_data((Proc))->x_reg_array;	\
     (Proc)->freason = (Reason);					\
-    (Proc)->current = (Bif)->code;				\
+    (Proc)->current = &(Bif)->info.mfa;                         \
     reg[0] = (Eterm) (A0);					\
     reg[1] = (Eterm) (A1);					\
     reg[2] = (Eterm) (A2);					\
@@ -202,7 +202,7 @@ do {						\
 #define ERTS_BIF_PREP_ERROR_TRAPPED0(Ret, Proc, Reason, Bif)	\
 do {								\
     (Proc)->freason = (Reason);					\
-    (Proc)->current = (Bif)->code;				\
+    (Proc)->current = &(Bif)->info.mfa;                         \
     (Ret) = THE_NON_VALUE;					\
 } while (0)
 
@@ -210,7 +210,7 @@ do {								\
 do {								\
     Eterm* reg = erts_proc_sched_data((Proc))->x_reg_array;	\
     (Proc)->freason = (Reason);					\
-    (Proc)->current = (Bif)->code;				\
+    (Proc)->current = &(Bif)->info.mfa;                         \
     reg[0] = (Eterm) (A0);					\
     (Ret) = THE_NON_VALUE;					\
 } while (0)
@@ -219,7 +219,7 @@ do {								\
 do {								\
     Eterm* reg = erts_proc_sched_data((Proc))->x_reg_array;	\
     (Proc)->freason = (Reason);					\
-    (Proc)->current = (Bif)->code;				\
+    (Proc)->current = &(Bif)->info.mfa;                         \
     reg[0] = (Eterm) (A0);					\
     reg[1] = (Eterm) (A1);					\
     (Ret) = THE_NON_VALUE;					\
@@ -229,7 +229,7 @@ do {								\
 do {								\
     Eterm* reg = erts_proc_sched_data((Proc))->x_reg_array;	\
     (Proc)->freason = (Reason);					\
-    (Proc)->current = (Bif)->code;				\
+    (Proc)->current = &(Bif)->info.mfa;                         \
     reg[0] = (Eterm) (A0);					\
     reg[1] = (Eterm) (A1);					\
     reg[2] = (Eterm) (A2);					\
diff --git a/erts/emulator/beam/break.c b/erts/emulator/beam/break.c
index 3c19e82b66..4ee00b53be 100644
--- a/erts/emulator/beam/break.c
+++ b/erts/emulator/beam/break.c
@@ -231,9 +231,9 @@ print_process_info(int to, void *to_arg, Process *p)
      * Display the initial function name
      */
     erts_print(to, to_arg, "Spawned as: %T:%T/%bpu\n",
-	       p->u.initial[INITIAL_MOD],
-	       p->u.initial[INITIAL_FUN],
-	       p->u.initial[INITIAL_ARI]);
+	       p->u.initial.module,
+	       p->u.initial.function,
+	       p->u.initial.arity);
     
     if (p->current != NULL) {
 	if (running) {
@@ -242,9 +242,9 @@ print_process_info(int to, void *to_arg, Process *p)
 	    erts_print(to, to_arg, "Current call: ");
 	}
 	erts_print(to, to_arg, "%T:%T/%bpu\n",
-		   p->current[0],
-		   p->current[1],
-		   p->current[2]);
+		   p->current->module,
+		   p->current->function,
+		   p->current->arity);
     }
 
     erts_print(to, to_arg, "Spawned by: %T\n", p->parent);
@@ -291,9 +291,9 @@ print_process_info(int to, void *to_arg, Process *p)
 		   erts_print(to, to_arg, "timeout");
 	     else
 		 erts_print(to, to_arg, "%T:%T/%bpu\n",
-			    scb->ct[j]->code[0],
-			    scb->ct[j]->code[1],
-			    scb->ct[j]->code[2]);
+			    scb->ct[j]->info.mfa.module,
+			    scb->ct[j]->info.mfa.function,
+			    scb->ct[j]->info.mfa.arity);
        }
        erts_print(to, to_arg, "\n");
     }
diff --git a/erts/emulator/beam/code_ix.h b/erts/emulator/beam/code_ix.h
index 584a605771..1b451bf921 100644
--- a/erts/emulator/beam/code_ix.h
+++ b/erts/emulator/beam/code_ix.h
@@ -56,12 +56,49 @@
 #  endif
 #  include "sys.h"
 #endif
+
+#include "beam_opcodes.h"
+
 struct process;
 
 
 #define ERTS_NUM_CODE_IX 3
 typedef unsigned ErtsCodeIndex;
 
+typedef struct ErtsCodeMFA_ {
+    Eterm module;
+    Eterm function;
+    Uint  arity;
+} ErtsCodeMFA;
+
+/*
+ * The ErtsCodeInfo structure is used both in the Export entry
+ * and in the code as the function header.
+ */
+
+/* If you change the size of this, you also have to update the code
+   in ops.tab to reflect the new func_info size */
+typedef struct ErtsCodeInfo_ {
+    BeamInstr op;           /* OpCode(i_func_info) */
+    BeamInstr native;       /* Used by hipe and trace to store extra data */
+    ErtsCodeMFA mfa;
+} ErtsCodeInfo;
+
+/* Get the code associated with a ErtsCodeInfo ptr. */
+ERTS_GLB_INLINE
+BeamInstr *erts_codeinfo_to_code(ErtsCodeInfo *ci);
+
+/* Get the ErtsCodeInfo for from a code ptr. */
+ERTS_GLB_INLINE
+ErtsCodeInfo *erts_code_to_codeinfo(BeamInstr *I);
+
+/* Get the code associated with a ErtsCodeMFA ptr. */
+ERTS_GLB_INLINE
+BeamInstr *erts_codemfa_to_code(ErtsCodeMFA *mfa);
+
+/* Get the ErtsCodeMFA from a code ptr. */
+ERTS_GLB_INLINE
+ErtsCodeMFA *erts_code_to_codemfa(BeamInstr *I);
 
 /* Called once at emulator initialization.
  */
@@ -121,10 +158,47 @@ void erts_abort_staging_code_ix(void);
 int erts_has_code_write_permission(void);
 #endif
 
-
+/* module/function/arity can be NIL/NIL/-1 when the MFA is pointing to some
+   invalid code, for instance unloaded_fun. */
+#define ASSERT_MFA(MFA)                                                 \
+    ASSERT((is_atom((MFA)->module) || is_nil((MFA)->module)) &&         \
+           (is_atom((MFA)->function) || is_nil((MFA)->function)) &&     \
+           (((MFA)->arity >= 0 && (MFA)->arity < 1024) || (MFA)->arity == -1))
 
 #if ERTS_GLB_INLINE_INCL_FUNC_DEF
 
+ERTS_GLB_INLINE
+BeamInstr *erts_codeinfo_to_code(ErtsCodeInfo *ci)
+{
+    ASSERT(ci->op == (BeamInstr) BeamOp(op_i_func_info_IaaI) || !ci->op);
+    ASSERT_MFA(&ci->mfa);
+    return (BeamInstr*)(ci + 1);
+}
+
+ERTS_GLB_INLINE
+ErtsCodeInfo *erts_code_to_codeinfo(BeamInstr *I)
+{
+    ErtsCodeInfo *ci = ((ErtsCodeInfo *)(((char *)(I)) - sizeof(ErtsCodeInfo)));
+    ASSERT(ci->op == (BeamInstr) BeamOp(op_i_func_info_IaaI) || !ci->op);
+    ASSERT_MFA(&ci->mfa);
+    return ci;
+}
+
+ERTS_GLB_INLINE
+BeamInstr *erts_codemfa_to_code(ErtsCodeMFA *mfa)
+{
+    ASSERT_MFA(mfa);
+    return (BeamInstr*)(mfa + 1);
+}
+
+ERTS_GLB_INLINE
+ErtsCodeMFA *erts_code_to_codemfa(BeamInstr *I)
+{
+    ErtsCodeMFA *mfa = ((ErtsCodeMFA *)(((char *)(I)) - sizeof(ErtsCodeMFA)));
+    ASSERT_MFA(mfa);
+    return mfa;
+}
+
 extern erts_smp_atomic32_t the_active_code_index;
 extern erts_smp_atomic32_t the_staging_code_index;
 
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index 75389107bb..a985ce4918 100644
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -1114,9 +1114,9 @@ process_info_aux(Process *BIF_P,
     case am_initial_call:
 	hp = HAlloc(BIF_P, 3+4);
 	res = TUPLE3(hp,
-		     rp->u.initial[INITIAL_MOD],
-		     rp->u.initial[INITIAL_FUN],
-		     make_small(rp->u.initial[INITIAL_ARI]));
+		     rp->u.initial.module,
+		     rp->u.initial.function,
+		     make_small(rp->u.initial.arity));
 	hp += 4;
 	break;
 
@@ -1563,9 +1563,9 @@ process_info_aux(Process *BIF_P,
 		    term = am_timeout;
 		else {
 		    term = TUPLE3(hp,
-				  scb->ct[j]->code[0],
-				  scb->ct[j]->code[1],
-				  make_small(scb->ct[j]->code[2]));
+				  scb->ct[j]->info.mfa.module,
+				  scb->ct[j]->info.mfa.function,
+				  make_small(scb->ct[j]->info.mfa.arity));
 		    hp += 4;
 		}
 		list = CONS(hp, term, list);
@@ -1614,10 +1614,12 @@ current_function(Process* BIF_P, Process* rp, Eterm** hpp, int full_info)
 
     if (rp->current == NULL) {
 	erts_lookup_function_info(&fi, rp->i, full_info);
-	rp->current = fi.current;
+	rp->current = &fi.ci->mfa;
+        ASSERT_MFA(rp->current);
     } else if (full_info) {
+        ASSERT_MFA(rp->current);
 	erts_lookup_function_info(&fi, rp->i, full_info);
-	if (fi.current == NULL) {
+	if (fi.ci == NULL) {
 	    /* Use the current function without location info */
 	    erts_set_current_function(&fi, rp->current);
 	}
@@ -1633,9 +1635,9 @@ current_function(Process* BIF_P, Process* rp, Eterm** hpp, int full_info)
 	 * instead if it can be looked up.
 	 */
 	erts_lookup_function_info(&fi2, rp->cp, full_info);
-	if (fi2.current) {
+	if (fi2.ci) {
 	    fi = fi2;
-	    rp->current = fi2.current;
+	    rp->current = &fi2.ci->mfa;
 	}
     }
 
@@ -1650,8 +1652,9 @@ current_function(Process* BIF_P, Process* rp, Eterm** hpp, int full_info)
 	hp = erts_build_mfa_item(&fi, hp, am_true, &res);
     } else {
 	hp = HAlloc(BIF_P, 3+4);
-	res = TUPLE3(hp, rp->current[0],
-		     rp->current[1], make_small(rp->current[2]));
+	res = TUPLE3(hp, rp->current->module,
+		     rp->current->function,
+                     make_small(rp->current->arity));
 	hp += 4;
     }
     *hpp = hp;
@@ -1692,7 +1695,7 @@ current_stacktrace(Process* p, Process* rp, Eterm** hpp)
     heap_size = 3;
     for (i = 0; i < depth; i++) {
 	erts_lookup_function_info(stkp, s->trace[i], 1);
-	if (stkp->current) {
+	if (stkp->ci) {
 	    heap_size += stkp->needed + 2;
 	    stkp++;
 	}
@@ -3227,7 +3230,7 @@ fun_info_2(BIF_ALIST_2)
 	    break;
 	case am_module:
 	    hp = HAlloc(p, 3);
-	    val = exp->code[0];
+	    val = exp->info.mfa.module;
 	    break;
 	case am_new_index:
 	    hp = HAlloc(p, 3);
@@ -3255,11 +3258,11 @@ fun_info_2(BIF_ALIST_2)
 	    break;
 	case am_arity:
 	    hp = HAlloc(p, 3);
-	    val = make_small(exp->code[2]);
+	    val = make_small(exp->info.mfa.arity);
 	    break;
 	case am_name:
 	    hp = HAlloc(p, 3);
-	    val = exp->code[1];
+	    val = exp->info.mfa.function;
 	    break;
 	default:
 	    goto error;
@@ -3285,7 +3288,9 @@ fun_info_mfa_1(BIF_ALIST_1)
     } else if (is_export(fun)) {
 	Export* exp = (Export *) ((UWord) (export_val(fun))[1]);
 	hp = HAlloc(p, 4);
-	BIF_RET(TUPLE3(hp,exp->code[0],exp->code[1],make_small(exp->code[2])));
+	BIF_RET(TUPLE3(hp,exp->info.mfa.module,
+                       exp->info.mfa.function,
+                       make_small(exp->info.mfa.arity)));
     }
     BIF_ERROR(p, BADARG);
 }
diff --git a/erts/emulator/beam/erl_bif_op.c b/erts/emulator/beam/erl_bif_op.c
index aecb8bf0c1..a594ec1493 100644
--- a/erts/emulator/beam/erl_bif_op.c
+++ b/erts/emulator/beam/erl_bif_op.c
@@ -260,7 +260,7 @@ Eterm erl_is_function(Process* p, Eterm arg1, Eterm arg2)
     } else if (is_export(arg1)) {
 	Export* exp = (Export *) (export_val(arg1)[1]);
 
-	if (exp->code[2] == (Uint) arity) {
+	if (exp->info.mfa.arity == (Uint) arity) {
 	    BIF_RET(am_true);
 	}
     }
diff --git a/erts/emulator/beam/erl_bif_trace.c b/erts/emulator/beam/erl_bif_trace.c
index 66e5146da0..e3355208e5 100644
--- a/erts/emulator/beam/erl_bif_trace.c
+++ b/erts/emulator/beam/erl_bif_trace.c
@@ -125,7 +125,6 @@ erts_internal_trace_pattern_3(BIF_ALIST_3)
 static Eterm
 trace_pattern(Process* p, Eterm MFA, Eterm Pattern, Eterm flaglist)
 {
-    DeclareTmpHeap(mfa,3,p); /* Not really heap here, but might be when setting pattern */
     int i;
     int matches = -1;
     int specified = 0;
@@ -308,30 +307,30 @@ trace_pattern(Process* p, Eterm MFA, Eterm Pattern, Eterm flaglist)
 	}
 	matches = 0;
     } else if (is_tuple(MFA)) {
+        ErtsCodeMFA mfa;
 	Eterm *tp = tuple_val(MFA);
 	if (tp[0] != make_arityval(3)) {
 	    goto error;
 	}
-	mfa[0] = tp[1];
-	mfa[1] = tp[2];
-	mfa[2] = tp[3];
-	if (!is_atom(mfa[0]) || !is_atom(mfa[1]) ||
-	    (!is_small(mfa[2]) && mfa[2] != am_Underscore)) {
+	if (!is_atom(tp[1]) || !is_atom(tp[2]) ||
+	    (!is_small(tp[3]) && tp[3] != am_Underscore)) {
 	    goto error;
 	}
-	for (i = 0; i < 3 && mfa[i] != am_Underscore; i++, specified++) {
+	for (i = 0; i < 3 && tp[i+1] != am_Underscore; i++, specified++) {
 	    /* Empty loop body */
 	}
 	for (i = specified; i < 3; i++) {
-	    if (mfa[i] != am_Underscore) {
+	    if (tp[i+1] != am_Underscore) {
 		goto error;
 	    }
 	}
-	if (is_small(mfa[2])) {
-	    mfa[2] = signed_val(mfa[2]);
+	mfa.module   = tp[1];
+	mfa.function = tp[2];
+	if (specified == 3) {
+            mfa.arity = signed_val(tp[3]);
 	}
 
-	matches = erts_set_trace_pattern(p, mfa, specified,
+	matches = erts_set_trace_pattern(p, &mfa, specified,
 					 match_prog_set, match_prog_set,
 					 on, flags, meta_tracer, 0);
     } else if (is_atom(MFA)) {
@@ -343,7 +342,6 @@ trace_pattern(Process* p, Eterm MFA, Eterm Pattern, Eterm flaglist)
 
  error:
     MatchSetUnref(match_prog_set);
-    UnUseTmpHeap(3,p);
 
     ERTS_TRACER_CLEAR(&meta_tracer);
 
@@ -975,13 +973,14 @@ static int function_is_traced(Process *p,
     Export e;
     Export* ep;
     BeamInstr* pc;
+    ErtsCodeInfo *ci;
 
     /* First look for an export entry */
-    e.code[0] = mfa[0];
-    e.code[1] = mfa[1];
-    e.code[2] = mfa[2];
+    e.info.mfa.module = mfa[0];
+    e.info.mfa.function = mfa[1];
+    e.info.mfa.arity = mfa[2];
     if ((ep = export_get(&e)) != NULL) {
-	pc = ep->code+3;
+	pc = ep->code;
 	if (ep->addressv[erts_active_code_ix()] == pc &&
 	    *pc != (BeamInstr) em_call_error_handler) {
 
@@ -990,17 +989,17 @@ static int function_is_traced(Process *p,
 	    ASSERT(*pc == (BeamInstr) em_apply_bif ||
 		   *pc == (BeamInstr) BeamOp(op_i_generic_breakpoint));
 
-	    if (erts_is_trace_break(pc, ms, 0)) {
+	    if (erts_is_trace_break(&ep->info, ms, 0)) {
 		return FUNC_TRACE_GLOBAL_TRACE;
 	    }
 
-	    if (erts_is_trace_break(pc, ms, 1)) {
+	    if (erts_is_trace_break(&ep->info, ms, 1)) {
 		r |= FUNC_TRACE_LOCAL_TRACE;
 	    }
-	    if (erts_is_mtrace_break(pc, ms_meta, tracer_pid_meta)) {
+	    if (erts_is_mtrace_break(&ep->info, ms_meta, tracer_pid_meta)) {
 		r |= FUNC_TRACE_META_TRACE;
 	    }
-	    if (erts_is_time_break(p, pc, call_time)) {
+	    if (erts_is_time_break(p, &ep->info, call_time)) {
 		r |= FUNC_TRACE_TIME_TRACE;
 	    }
 	    return r ? r : FUNC_TRACE_UNTRACED;
@@ -1008,15 +1007,15 @@ static int function_is_traced(Process *p,
     }
     
     /* OK, now look for breakpoint tracing */
-    if ((pc = erts_find_local_func(mfa)) != NULL) {
+    if ((ci = erts_find_local_func(&e.info.mfa)) != NULL) {
 	int r = 
-	    (erts_is_trace_break(pc, ms, 1)
+	    (erts_is_trace_break(ci, ms, 1)
 	     ? FUNC_TRACE_LOCAL_TRACE : 0) 
-	    | (erts_is_mtrace_break(pc, ms_meta, tracer_pid_meta)
+	    | (erts_is_mtrace_break(ci, ms_meta, tracer_pid_meta)
 	       ? FUNC_TRACE_META_TRACE : 0)
-	    | (erts_is_count_break(pc, count)
+	    | (erts_is_count_break(ci, count)
 	       ? FUNC_TRACE_COUNT_TRACE : 0)
-	    | (erts_is_time_break(p, pc, call_time)
+	    | (erts_is_time_break(p, ci, call_time)
 	       ? FUNC_TRACE_TIME_TRACE : 0);
 	
 	return r ? r : FUNC_TRACE_UNTRACED;
@@ -1350,7 +1349,7 @@ trace_info_event(Process* p, Eterm event, Eterm key)
 #undef FUNC_TRACE_LOCAL_TRACE
 
 int
-erts_set_trace_pattern(Process*p, Eterm* mfa, int specified,
+erts_set_trace_pattern(Process*p, ErtsCodeMFA *mfa, int specified,
 		       Binary* match_prog_set, Binary *meta_match_prog_set,
 		       int on, struct trace_pattern_flags flags,
 		       ErtsTracer meta_tracer, int is_blocking)
@@ -1370,22 +1369,23 @@ erts_set_trace_pattern(Process*p, Eterm* mfa, int specified,
     n = finish_bp.e.matched;
 
     for (i = 0; i < n; i++) {
-	BeamInstr* pc = fp[i].pc;
-	Export* ep = ErtsContainerStruct(pc, Export, code[3]);
+        ErtsCodeInfo *ci = fp[i].ci;
+	BeamInstr* pc = erts_codeinfo_to_code(ci);
+	Export* ep = ErtsContainerStruct(ci, Export, info);
 
 	if (on && !flags.breakpoint) {
 	    /* Turn on global call tracing */
 	    if (ep->addressv[code_ix] != pc) {
 		fp[i].mod->curr.num_traced_exports++;
 #ifdef DEBUG
-		pc[-5] = (BeamInstr) BeamOp(op_i_func_info_IaaI);
+		ep->info.op = (BeamInstr) BeamOp(op_i_func_info_IaaI);
 #endif
-		pc[0] = (BeamInstr) BeamOp(op_jump_f);
-		pc[1] = (BeamInstr) ep->addressv[code_ix];
+                ep->code[0] = (BeamInstr) BeamOp(op_jump_f);
+		ep->code[1] = (BeamInstr) ep->addressv[code_ix];
 	    }
-	    erts_set_call_trace_bif(pc, match_prog_set, 0);
+	    erts_set_call_trace_bif(ci, match_prog_set, 0);
 	    if (ep->addressv[code_ix] != pc) {
-		pc[0] = (BeamInstr) BeamOp(op_i_generic_breakpoint);
+		ep->code[0] = (BeamInstr) BeamOp(op_i_generic_breakpoint);
 	    }
 	} else if (!on && flags.breakpoint) {
 	    /* Turn off breakpoint tracing -- nothing to do here. */
@@ -1394,9 +1394,9 @@ erts_set_trace_pattern(Process*p, Eterm* mfa, int specified,
 	     * Turn off global tracing, either explicitly or implicitly
 	     * before turning on breakpoint tracing.
 	     */
-	    erts_clear_call_trace_bif(pc, 0);
-	    if (pc[0] == (BeamInstr) BeamOp(op_i_generic_breakpoint)) {
-		pc[0] = (BeamInstr) BeamOp(op_jump_f);
+	    erts_clear_call_trace_bif(ci, 0);
+	    if (ep->code[0] == (BeamInstr) BeamOp(op_i_generic_breakpoint)) {
+		ep->code[0] = (BeamInstr) BeamOp(op_jump_f);
 	    }
 	}
     }
@@ -1406,68 +1406,76 @@ erts_set_trace_pattern(Process*p, Eterm* mfa, int specified,
     */
     for (i = 0; i < BIF_SIZE; ++i) {
 	Export *ep = bif_export[i];
-	int j;
-	
+
 	if (!ExportIsBuiltIn(ep)) {
 	    continue;
 	}
-	
+
 	if (bif_table[i].f == bif_table[i].traced) {
 	    /* Trace wrapper same as regular function - untraceable */
 	    continue;
 	}
-	
-	for (j = 0; j < specified && mfa[j] == ep->code[j]; j++) {
-	    /* Empty loop body */
-	}
-	if (j == specified) {
-	    BeamInstr* pc = (BeamInstr *)bif_export[i]->code + 3;
 
-	    if (! flags.breakpoint) { /* Export entry call trace */
-		if (on) {
-		    erts_clear_call_trace_bif(pc, 1);
-		    erts_clear_mtrace_bif(pc);
-		    erts_set_call_trace_bif(pc, match_prog_set, 0);
-		} else { /* off */
-		    erts_clear_call_trace_bif(pc, 0);
-		}
-		matches++;
-	    } else { /* Breakpoint call trace */
-		int m = 0;
-		
-		if (on) {
-		    if (flags.local) {
-			erts_clear_call_trace_bif(pc, 0);
-			erts_set_call_trace_bif(pc, match_prog_set, 1);
-			m = 1;
-		    }
-		    if (flags.meta) {
-			erts_set_mtrace_bif(pc, meta_match_prog_set,
-					    meta_tracer);
-			m = 1;
-		    }
-		    if (flags.call_time) {
-			erts_set_time_trace_bif(pc, on);
-			/* I don't want to remove any other tracers */
-			m = 1;
-		    }
-		} else { /* off */
-		    if (flags.local) {
-			erts_clear_call_trace_bif(pc, 1);
-			m = 1;
-		    }
-		    if (flags.meta) {
-			erts_clear_mtrace_bif(pc);
-			m = 1;
-		    }
-		    if (flags.call_time) {
-			erts_clear_time_trace_bif(pc);
-			m = 1;
-		    }
-		}
-		matches += m;
-	    }
-	}
+        switch (specified) {
+        case 3:
+            if (mfa->arity != ep->info.mfa.arity)
+                continue;
+        case 2:
+            if (mfa->function != ep->info.mfa.function)
+                continue;
+        case 1:
+            if (mfa->module != ep->info.mfa.module)
+                continue;
+        case 0:
+            break;
+        default:
+            ASSERT(0);
+        }
+
+        if (! flags.breakpoint) { /* Export entry call trace */
+            if (on) {
+                erts_clear_call_trace_bif(&ep->info, 1);
+                erts_clear_mtrace_bif(&ep->info);
+                erts_set_call_trace_bif(&ep->info, match_prog_set, 0);
+            } else { /* off */
+                erts_clear_call_trace_bif(&ep->info, 0);
+            }
+            matches++;
+        } else { /* Breakpoint call trace */
+            int m = 0;
+
+            if (on) {
+                if (flags.local) {
+                    erts_clear_call_trace_bif(&ep->info, 0);
+                    erts_set_call_trace_bif(&ep->info, match_prog_set, 1);
+                    m = 1;
+                }
+                if (flags.meta) {
+                    erts_set_mtrace_bif(&ep->info, meta_match_prog_set,
+                                        meta_tracer);
+                    m = 1;
+                }
+                if (flags.call_time) {
+                    erts_set_time_trace_bif(&ep->info, on);
+                    /* I don't want to remove any other tracers */
+                    m = 1;
+                }
+            } else { /* off */
+                if (flags.local) {
+                    erts_clear_call_trace_bif(&ep->info, 1);
+                    m = 1;
+                }
+                if (flags.meta) {
+                    erts_clear_mtrace_bif(&ep->info);
+                    m = 1;
+                }
+                if (flags.call_time) {
+                    erts_clear_time_trace_bif(&ep->info);
+                    m = 1;
+                }
+            }
+            matches += m;
+        }
     }
 
     /*
@@ -1669,10 +1677,9 @@ install_exp_breakpoints(BpFunctions* f)
     Uint i;
 
     for (i = 0; i < ne; i++) {
-	BeamInstr* pc = fp[i].pc;
-	Export* ep = ErtsContainerStruct(pc, Export, code[3]);
+	Export* ep = ErtsContainerStruct(fp[i].ci, Export, info);
 
-	ep->addressv[code_ix] = pc;
+	ep->addressv[code_ix] = ep->code;
     }
 }
 
@@ -1685,14 +1692,13 @@ uninstall_exp_breakpoints(BpFunctions* f)
     Uint i;
 
     for (i = 0; i < ne; i++) {
-	BeamInstr* pc = fp[i].pc;
-	Export* ep = ErtsContainerStruct(pc, Export, code[3]);
+	Export* ep = ErtsContainerStruct(fp[i].ci, Export, info);
 
-	if (ep->addressv[code_ix] != pc) {
+	if (ep->addressv[code_ix] != ep->code) {
 	    continue;
 	}
-	ASSERT(*pc == (BeamInstr) BeamOp(op_jump_f));
-	ep->addressv[code_ix] = (BeamInstr *) ep->code[4];
+	ASSERT(ep->code[0] == (BeamInstr) BeamOp(op_jump_f));
+	ep->addressv[code_ix] = (BeamInstr *) ep->code[1];
     }
 }
 
@@ -1705,15 +1711,14 @@ clean_export_entries(BpFunctions* f)
     Uint i;
 
     for (i = 0; i < ne; i++) {
-	BeamInstr* pc = fp[i].pc;
-	Export* ep = ErtsContainerStruct(pc, Export, code[3]);
+	Export* ep = ErtsContainerStruct(fp[i].ci, Export, info);
 
-	if (ep->addressv[code_ix] == pc) {
+	if (ep->addressv[code_ix] == ep->code) {
 	    continue;
 	}
-	if (*pc == (BeamInstr) BeamOp(op_jump_f)) {
-	    ep->code[3] = (BeamInstr) 0;
-	    ep->code[4] = (BeamInstr) 0;
+	if (ep->code[0] == (BeamInstr) BeamOp(op_jump_f)) {
+	    ep->code[0] = (BeamInstr) 0;
+	    ep->code[1] = (BeamInstr) 0;
 	}
     }
 }
@@ -1725,11 +1730,11 @@ setup_bif_trace(void)
 
     for (i = 0; i < BIF_SIZE; ++i) {
 	Export *ep = bif_export[i];
-	GenericBp* g = (GenericBp *) ep->fake_op_func_info_for_hipe[1];
+	GenericBp* g = (GenericBp *) ep->info.native;
 	if (g) {
 	    if (ExportIsBuiltIn(ep)) {
-		ASSERT(ep->code[4]);
-		ep->code[4] = (BeamInstr) bif_table[i].traced;
+		ASSERT(ep->code[1]);
+		ep->code[1] = (BeamInstr) bif_table[i].traced;
 	    }
 	}
     }
@@ -1743,12 +1748,11 @@ reset_bif_trace(void)
 
     for (i = 0; i < BIF_SIZE; ++i) {
 	Export *ep = bif_export[i];
-	BeamInstr* pc = ep->code+3;
-	GenericBp* g = (GenericBp *) pc[-4];
+	GenericBp* g = (GenericBp *) ep->info.native;
 	if (g && g->data[active].flags == 0) {
 	    if (ExportIsBuiltIn(ep)) {
-		ASSERT(ep->code[4]);
-		ep->code[4] = (BeamInstr) bif_table[i].f;
+		ASSERT(ep->code[1]);
+		ep->code[1] = (BeamInstr) bif_table[i].f;
 	    }
 	}
     }
diff --git a/erts/emulator/beam/erl_db_util.c b/erts/emulator/beam/erl_db_util.c
index 6732b708a8..988467ce44 100644
--- a/erts/emulator/beam/erl_db_util.c
+++ b/erts/emulator/beam/erl_db_util.c
@@ -1769,7 +1769,7 @@ Eterm db_prog_match(Process *c_p,
     Eterm t;
     Eterm *esp;
     MatchVariable* variables;
-    BeamInstr *cp;
+    ErtsCodeInfo *cp;
     const UWord *pc = prog->text;
     Eterm *ehp;
     Eterm ret;
@@ -2408,9 +2408,9 @@ restart:
 		ehp = HAllocX(build_proc, 4, HEAP_XTRA);
  		*esp++ = make_tuple(ehp);
 		ehp[0] = make_arityval(3);
-		ehp[1] = cp[0];
-		ehp[2] = cp[1];
-		ehp[3] = make_small((Uint) cp[2]);
+		ehp[1] = cp->mfa.module;
+		ehp[2] = cp->mfa.function;
+		ehp[3] = make_small((Uint) cp->mfa.arity);
 	    }
 	    break;
         case matchSilent:
diff --git a/erts/emulator/beam/erl_fun.c b/erts/emulator/beam/erl_fun.c
index c639ba623f..9deec946d5 100644
--- a/erts/emulator/beam/erl_fun.c
+++ b/erts/emulator/beam/erl_fun.c
@@ -49,8 +49,8 @@ static void fun_free(ErlFunEntry* obj);
  * to unloaded_fun[]. The -1 in unloaded_fun[0] will be interpreted
  * as an illegal arity when attempting to call a fun.
  */
-static BeamInstr unloaded_fun_code[3] = {NIL, -1, 0};
-static BeamInstr* unloaded_fun = unloaded_fun_code + 2;
+static BeamInstr unloaded_fun_code[4] = {NIL, NIL, -1, 0};
+static BeamInstr* unloaded_fun = unloaded_fun_code + 3;
 
 void
 erts_init_fun_table(void)
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index 7442e99cb3..f0535451fc 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -2285,7 +2285,7 @@ typedef struct {
     Export exp;
     struct erl_module_nif* m;
     NativeFunPtr fp;
-    BeamInstr *saved_current;
+    ErtsCodeMFA *saved_current;
     int exception_thrown;
     int saved_argc;
     int rootset_extra;
@@ -2328,9 +2328,9 @@ allocate_nif_sched_data(Process* proc, int argc)
     ep->rootset_extra = argc;
     ep->rootset[0] = NIL;
     for (i=0; i<ERTS_NUM_CODE_IX; i++) {
-	ep->exp.addressv[i] = &ep->exp.code[3];
+	ep->exp.addressv[i] = &ep->exp.code[0];
     }
-    ep->exp.code[3] = (BeamInstr) em_call_nif;
+    ep->exp.code[0] = (BeamInstr) em_call_nif;
     (void) ERTS_PROC_SET_NIF_TRAP_EXPORT(proc, ep);
     return ep;
 }
@@ -2401,10 +2401,10 @@ init_nif_sched_data(ErlNifEnv* env, NativeFunPtr direct_fp, NativeFunPtr indirec
 	ep->saved_argc = argc;
     }
     proc->i = (BeamInstr*) ep->exp.addressv[0];
-    ep->exp.code[0] = (BeamInstr) proc->current[0];
-    ep->exp.code[1] = (BeamInstr) proc->current[1];
-    ep->exp.code[2] = argc;
-    ep->exp.code[4] = (BeamInstr) direct_fp;
+    ep->exp.info.mfa.module = proc->current->module;
+    ep->exp.info.mfa.function = proc->current->function;
+    ep->exp.info.mfa.arity = argc;
+    ep->exp.code[1] = (BeamInstr) direct_fp;
     ep->m = env->mod_nif;
     ep->fp = indirect_fp;
     proc->freason = TRAP;
@@ -2426,7 +2426,7 @@ restore_nif_mfa(Process* proc, NifExport* ep, int exception)
     ERTS_SMP_LC_ASSERT(erts_proc_lc_my_proc_locks(proc)
 		       & ERTS_PROC_LOCK_MAIN);
 
-    ASSERT(ep->saved_current != &ep->exp.code[0]);
+    ASSERT(ep->saved_current != &ep->exp.info.mfa);
     proc->current = ep->saved_current;
     ep->saved_current = NULL;
     if (exception) {
@@ -2500,7 +2500,8 @@ execute_dirty_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
 
     execution_state(env, &proc, NULL);
 
-    fp = (NativeFunPtr) proc->current[6];
+    ep = ErtsContainerStruct(proc->current, NifExport, exp.info.mfa);
+    fp = ep->fp;
 
     ASSERT(ERTS_SCHEDULER_IS_DIRTY(erts_proc_sched_data(proc)));
 
@@ -2569,7 +2570,8 @@ schedule_dirty_nif(ErlNifEnv* env, int flags, int argc, const ERL_NIF_TERM argv[
 	erts_smp_proc_lock(proc, ERTS_PROC_LOCK_MAIN);
     }
 
-    fp = (NativeFunPtr) proc->current[6];
+    ep = ErtsContainerStruct(proc->current, NifExport, exp.info.mfa);
+    fp = ep->fp;
 
     ASSERT(fp);
 
@@ -2629,7 +2631,8 @@ execute_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
     ERL_NIF_TERM result;
 
     execution_state(env, &proc, NULL);
-    fp = (NativeFunPtr) proc->current[6];
+    ep = ErtsContainerStruct(proc->current, NifExport, exp.info.mfa);
+    fp = ep->fp;
 
     ASSERT(!env->exception_thrown);
     ep = (NifExport*) ERTS_PROC_GET_NIF_TRAP_EXPORT(proc);
@@ -2697,7 +2700,7 @@ enif_schedule_nif(ErlNifEnv* env, const char* fun_name, int flags,
 
     ep = (NifExport*) ERTS_PROC_GET_NIF_TRAP_EXPORT(proc);
     ASSERT(ep);
-    ep->exp.code[1] = (BeamInstr) fun_name_atom;
+    ep->exp.info.mfa.function = (BeamInstr) fun_name_atom;
 
 done:
     if (scheduler < 0)
@@ -3011,17 +3014,16 @@ int enif_map_iterator_get_pair(ErlNifEnv *env,
  ***************************************************************************/
 
 
-static BeamInstr** get_func_pp(BeamCodeHeader* mod_code, Eterm f_atom, unsigned arity)
+static ErtsCodeInfo** get_func_pp(BeamCodeHeader* mod_code, Eterm f_atom, unsigned arity)
 {
     int n = (int) mod_code->num_functions;
     int j;
     for (j = 0; j < n; ++j) {
-	BeamInstr* code_ptr = (BeamInstr*) mod_code->functions[j];
-	ASSERT(code_ptr[0] == (BeamInstr) BeamOp(op_i_func_info_IaaI));
-	if (f_atom == ((Eterm) code_ptr[3])
-	    && arity == ((unsigned) code_ptr[4])) {
-
-	    return (BeamInstr**) &mod_code->functions[j];
+	ErtsCodeInfo* ci = mod_code->functions[j];
+	ASSERT(ci->op == (BeamInstr) BeamOp(op_i_func_info_IaaI));
+	if (f_atom == ci->mfa.function
+	    && arity == ci->mfa.arity) {
+	    return mod_code->functions+j;
 	}
     }
     return NULL;
@@ -3156,7 +3158,7 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
     Eterm mod_atom;
     const Atom* mod_atomp;
     Eterm f_atom;
-    BeamInstr* caller;
+    ErtsCodeInfo* caller;
     ErtsSysDdllError errdesc = ERTS_SYS_DDLL_ERROR_INIT;
     Eterm ret = am_ok;
     int veto;
@@ -3189,12 +3191,12 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
 
     /* Find calling module */
     ASSERT(BIF_P->current != NULL);
-    ASSERT(BIF_P->current[0] == am_erlang
-	   && BIF_P->current[1] == am_load_nif 
-	   && BIF_P->current[2] == 2);
+    ASSERT(BIF_P->current->module == am_erlang
+	   && BIF_P->current->function == am_load_nif 
+	   && BIF_P->current->arity == 2);
     caller = find_function_from_pc(BIF_P->cp);
     ASSERT(caller != NULL);
-    mod_atom = caller[0];
+    mod_atom = caller->mfa.module;
     ASSERT(is_atom(mod_atom));
     module_p = erts_get_module(mod_atom, erts_active_code_ix());
     ASSERT(module_p != NULL);
@@ -3271,9 +3273,9 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
 	int incr = 0;
 	ErlNifFunc* f = entry->funcs;
 	for (i=0; i < entry->num_of_funcs && ret==am_ok; i++) {
-	    BeamInstr** code_pp;
+	    ErtsCodeInfo** ci_pp;
 	    if (!erts_atom_get(f->name, sys_strlen(f->name), &f_atom, ERTS_ATOM_ENC_LATIN1)
-		|| (code_pp = get_func_pp(this_mi->code_hdr, f_atom, f->arity))==NULL) {
+		|| (ci_pp = get_func_pp(this_mi->code_hdr, f_atom, f->arity))==NULL) {
 		ret = load_nif_error(BIF_P,bad_lib,"Function not found %T:%s/%u",
 				     mod_atom, f->name, f->arity);
 	    }
@@ -3295,9 +3297,9 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
 #endif
 	    }
 #ifdef ERTS_DIRTY_SCHEDULERS
-	    else if (code_pp[1] - code_pp[0] < (5+4))
+	    else if (erts_codeinfo_to_code(ci_pp[1]) - erts_codeinfo_to_code(ci_pp[0]) < (4))
 #else
-	    else if (code_pp[1] - code_pp[0] < (5+3))
+	    else if (erts_codeinfo_to_code(ci_pp[1]) - erts_codeinfo_to_code(ci_pp[0]) < (3))
 #endif
 	    {
 		ret = load_nif_error(BIF_P,bad_lib,"No explicit call to load_nif"
@@ -3365,31 +3367,33 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
 	this_mi->nif = lib;
 	for (i=0; i < entry->num_of_funcs; i++)
 	{
-	    BeamInstr* code_ptr;
+	    ErtsCodeInfo* ci;
+            BeamInstr *code_ptr;
 	    erts_atom_get(f->name, sys_strlen(f->name), &f_atom, ERTS_ATOM_ENC_LATIN1);
-	    code_ptr = *get_func_pp(this_mi->code_hdr, f_atom, f->arity);
+	    ci = *get_func_pp(this_mi->code_hdr, f_atom, f->arity);
+            code_ptr = erts_codeinfo_to_code(ci);
 
-	    if (code_ptr[1] == 0) {
-		code_ptr[5+0] = (BeamInstr) BeamOp(op_call_nif);
+	    if (ci->native == 0) {
+		code_ptr[0] = (BeamInstr) BeamOp(op_call_nif);
 	    }
 	    else { /* Function traced, patch the original instruction word */
-		GenericBp* g = (GenericBp *) code_ptr[1];
-		ASSERT(code_ptr[5+0] ==
+		GenericBp* g = (GenericBp *) ci->native;
+		ASSERT(code_ptr[0] ==
 		       (BeamInstr) BeamOp(op_i_generic_breakpoint));
 		g->orig_instr = (BeamInstr) BeamOp(op_call_nif);
 	    }
 #ifdef ERTS_DIRTY_SCHEDULERS
 	    if ((entry->major > 2 || (entry->major == 2 && entry->minor >= 7))
 		&& (entry->options & ERL_NIF_DIRTY_NIF_OPTION) && f->flags) {
-		code_ptr[5+3] = (BeamInstr) f->fptr;
-		code_ptr[5+1] = (f->flags == ERL_NIF_DIRTY_JOB_IO_BOUND) ?
+		code_ptr[3] = (BeamInstr) f->fptr;
+		code_ptr[1] = (f->flags == ERL_NIF_DIRTY_JOB_IO_BOUND) ?
 		    (BeamInstr) schedule_dirty_io_nif :
 		    (BeamInstr) schedule_dirty_cpu_nif;
 	    }
 	    else
 #endif
-		code_ptr[5+1] = (BeamInstr) f->fptr;
-	    code_ptr[5+2] = (BeamInstr) lib;
+		code_ptr[1] = (BeamInstr) f->fptr;
+	    code_ptr[2] = (BeamInstr) lib;
 	    f = next_func(entry, &incr, f);
 	}
     }
diff --git a/erts/emulator/beam/erl_printf_term.c b/erts/emulator/beam/erl_printf_term.c
index 1a579704a8..b43a1b0190 100644
--- a/erts/emulator/beam/erl_printf_term.c
+++ b/erts/emulator/beam/erl_printf_term.c
@@ -526,8 +526,8 @@ print_term(fmtfn_t fn, void* arg, Eterm obj, long *dcount) {
 	case EXPORT_DEF:
 	    {
 		Export* ep = *((Export **) (export_val(wobj) + 1));
-		Atom* module = atom_tab(atom_val(ep->code[0]));
-		Atom* name = atom_tab(atom_val(ep->code[1]));
+		Atom* module = atom_tab(atom_val(ep->info.mfa.module));
+		Atom* name = atom_tab(atom_val(ep->info.mfa.function));
 
 		PRINT_STRING(res, fn, arg, "#Fun<");
 		PRINT_BUF(res, fn, arg, module->name, module->len);
@@ -535,7 +535,7 @@ print_term(fmtfn_t fn, void* arg, Eterm obj, long *dcount) {
 		PRINT_BUF(res, fn, arg, name->name, name->len);
 		PRINT_CHAR(res, fn, arg, '.');
 		PRINT_SWORD(res, fn, arg, 'd', 0, 1,
-			    (ErlPfSWord) ep->code[2]);
+			    (ErlPfSWord) ep->info.mfa.arity);
 		PRINT_CHAR(res, fn, arg, '>');
 	    }
 	    break;
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c
index 269518d8d6..f7f391e322 100644
--- a/erts/emulator/beam/erl_process.c
+++ b/erts/emulator/beam/erl_process.c
@@ -11464,9 +11464,9 @@ erl_create_process(Process* parent, /* Parent of process (default group leader).
     p->schedule_count = 0;
     ASSERT(p->min_heap_size == erts_next_heap_size(p->min_heap_size, 0));
 
-    p->u.initial[INITIAL_MOD] = mod;
-    p->u.initial[INITIAL_FUN] = func;
-    p->u.initial[INITIAL_ARI] = (Uint) arity;
+    p->u.initial.module = mod;
+    p->u.initial.function = func;
+    p->u.initial.arity = (Uint) arity;
 
     /*
      * Must initialize binary lists here before copying binaries to process.
@@ -11508,7 +11508,7 @@ erl_create_process(Process* parent, /* Parent of process (default group leader).
 
     /* No need to initialize p->fcalls. */
 
-    p->current = p->u.initial+INITIAL_MOD;
+    p->current = &p->u.initial;
 
     p->i = (BeamInstr *) beam_apply;
     p->cp = (BeamInstr *) beam_apply+1;
@@ -11769,9 +11769,9 @@ void erts_init_empty_process(Process *p)
     p->seq_trace_clock = 0;
     p->seq_trace_lastcnt = 0;
     p->seq_trace_token = NIL;
-    p->u.initial[0] = 0;
-    p->u.initial[1] = 0;
-    p->u.initial[2] = 0;
+    p->u.initial.module = 0;
+    p->u.initial.function = 0;
+    p->u.initial.arity = 0;
     p->catches = 0;
     p->cp = NULL;
     p->i = NULL;
@@ -13220,8 +13220,8 @@ erts_program_counter_info(int to, void *to_arg, Process *p)
 static void
 print_function_from_pc(int to, void *to_arg, BeamInstr* x)
 {
-    BeamInstr* addr = find_function_from_pc(x);
-    if (addr == NULL) {
+    ErtsCodeInfo *ci = find_function_from_pc(x);
+    if (ci == NULL) {
         if (x == beam_exit) {
             erts_print(to, to_arg, "<terminate process>");
         } else if (x == beam_continue_exit) {
@@ -13235,7 +13235,8 @@ print_function_from_pc(int to, void *to_arg, BeamInstr* x)
         }
     } else {
 	erts_print(to, to_arg, "%T:%T/%d + %d",
-		   addr[0], addr[1], addr[2], ((x-addr)-2) * sizeof(Eterm));
+		   ci->mfa.module, ci->mfa.function, ci->mfa.arity,
+                   (x-(BeamInstr*)ci) * sizeof(Eterm));
     }
 }
 
diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h
index 3347a7a60e..b266d32e76 100644
--- a/erts/emulator/beam/erl_process.h
+++ b/erts/emulator/beam/erl_process.h
@@ -93,10 +93,6 @@ struct ErtsNodesMonitor_;
 #define ERTS_HEAP_FREE(Type, Ptr, Size)					\
      erts_free((Type), (Ptr))
 
-#define INITIAL_MOD 0
-#define INITIAL_FUN 1
-#define INITIAL_ARI 2
-
 #include "export.h"
 
 struct saved_calls {
@@ -1022,15 +1018,16 @@ struct process {
 #endif
     union {
 	void *terminate;
-	BeamInstr initial[3];	/* Initial module(0), function(1), arity(2), often used instead
-				   of pointer to funcinfo instruction, hence the BeamInstr datatype */
+	ErtsCodeMFA initial;	/* Initial module(0), function(1), arity(2),
+                                   often used instead of pointer to funcinfo
+                                   instruction. */
     } u;
-    BeamInstr* current;		/* Current Erlang function, part of the funcinfo:
+    ErtsCodeMFA* current;	/* Current Erlang function, part of the funcinfo:
 				 * module(0), function(1), arity(2)
 				 * (module and functions are tagged atoms;
-				 * arity an untagged integer). BeamInstr * because it references code
+				 * arity an untagged integer).
 				 */
-    
+
     /*
      * Information mainly for post-mortem use (erl crash dump).
      */
diff --git a/erts/emulator/beam/erl_process_dump.c b/erts/emulator/beam/erl_process_dump.c
index a70dfb8e73..645bedd8f1 100644
--- a/erts/emulator/beam/erl_process_dump.c
+++ b/erts/emulator/beam/erl_process_dump.c
@@ -334,8 +334,8 @@ stack_element_dump(int to, void *to_arg, Eterm* sp, int yreg)
 static void
 print_function_from_pc(int to, void *to_arg, BeamInstr* x)
 {
-    BeamInstr* addr = find_function_from_pc(x);
-    if (addr == NULL) {
+    ErtsCodeInfo* ci = find_function_from_pc(x);
+    if (ci == NULL) {
         if (x == beam_exit) {
             erts_print(to, to_arg, "<terminate process>");
         } else if (x == beam_continue_exit) {
@@ -347,7 +347,8 @@ print_function_from_pc(int to, void *to_arg, BeamInstr* x)
         }
     } else {
 	erts_print(to, to_arg, "%T:%T/%bpu + %bpu",
-		   addr[0], addr[1], addr[2], ((x-addr)-2) * sizeof(Eterm));
+		   ci->mfa.module, ci->mfa.function, ci->mfa.arity,
+                   (x-(BeamInstr*)ci) * sizeof(Eterm));
     }
 }
 
diff --git a/erts/emulator/beam/erl_trace.c b/erts/emulator/beam/erl_trace.c
index 8c84303997..566529d2d4 100644
--- a/erts/emulator/beam/erl_trace.c
+++ b/erts/emulator/beam/erl_trace.c
@@ -773,7 +773,7 @@ trace_sched_aux(Process *p, ErtsProcLocks locks, Eterm what)
 	curr_func = 0;
     else {
 	if (!p->current)
-	    p->current = find_function_from_pc(p->i);
+	    p->current = &find_function_from_pc(p->i)->mfa;
 	curr_func = p->current != NULL;
     }
 
@@ -781,7 +781,8 @@ trace_sched_aux(Process *p, ErtsProcLocks locks, Eterm what)
 	tmp = make_small(0);
     } else {
         hp = HAlloc(p, 4);
-	tmp = TUPLE3(hp,p->current[0],p->current[1],make_small(p->current[2]));
+	tmp = TUPLE3(hp,p->current->module,p->current->function,
+                     make_small(p->current->arity));
 	hp += 4;
     }
 
@@ -1027,14 +1028,14 @@ erts_trace_return_to(Process *p, BeamInstr *pc)
 {
     Eterm mfa;
 
-    BeamInstr *code_ptr = find_function_from_pc(pc);
+    ErtsCodeInfo *ci = find_function_from_pc(pc);
 
-
-    if (!code_ptr) {
+    if (!ci) {
 	mfa = am_undefined;
     } else {
         Eterm *hp = HAlloc(p, 4);
-	mfa = TUPLE3(hp, code_ptr[0], code_ptr[1], make_small(code_ptr[2]));
+	mfa = TUPLE3(hp, ci->mfa.module, ci->mfa.function,
+                     make_small(ci->mfa.arity));
     }
 
     send_to_tracer_nif(p, &p->common, p->common.id, NULL, TRACE_FUN_T_CALL,
@@ -1046,11 +1047,11 @@ erts_trace_return_to(Process *p, BeamInstr *pc)
  * or   {trace, Pid, return_from, {Mod, Name, Arity}, Retval}
  */
 void
-erts_trace_return(Process* p, BeamInstr* fi, Eterm retval, ErtsTracer *tracer)
+erts_trace_return(Process* p, ErtsCodeMFA *mfa,
+                  Eterm retval, ErtsTracer *tracer)
 {
     Eterm* hp;
-    Eterm mfa, mod, name;
-    int arity;
+    Eterm mfa_tuple;
     Uint meta_flags, *tracee_flags;
 
     ASSERT(tracer);
@@ -1084,15 +1085,13 @@ erts_trace_return(Process* p, BeamInstr* fi, Eterm retval, ErtsTracer *tracer)
 	tracee_flags = &meta_flags;
     }
 
-    mod = fi[0];
-    name = fi[1];
-    arity = fi[2];
-
     hp = HAlloc(p, 4);
-    mfa = TUPLE3(hp, mod, name, make_small(arity));
+    mfa_tuple = TUPLE3(hp, mfa->module, mfa->function,
+                       make_small(mfa->arity));
     hp += 4;
     send_to_tracer_nif_raw(p, NULL, *tracer, *tracee_flags, p->common.id,
-                           NULL, TRACE_FUN_T_CALL, am_return_from, mfa, retval, am_true);
+                           NULL, TRACE_FUN_T_CALL, am_return_from, mfa_tuple,
+                           retval, am_true);
 }
 
 /* Send {trace_ts, Pid, exception_from, {Mod, Name, Arity}, {Class,Value}, 
@@ -1103,7 +1102,7 @@ erts_trace_return(Process* p, BeamInstr* fi, Eterm retval, ErtsTracer *tracer)
  * Where Class is atomic but Value is any term.
  */
 void
-erts_trace_exception(Process* p, BeamInstr mfa[3], Eterm class, Eterm value,
+erts_trace_exception(Process* p, ErtsCodeMFA *mfa, Eterm class, Eterm value,
 		     ErtsTracer *tracer)
 {
     Eterm* hp;
@@ -1142,7 +1141,7 @@ erts_trace_exception(Process* p, BeamInstr mfa[3], Eterm class, Eterm value,
     }
 
     hp = HAlloc(p, 7);;
-    mfa_tuple = TUPLE3(hp, (Eterm) mfa[0], (Eterm) mfa[1], make_small((Eterm)mfa[2]));
+    mfa_tuple = TUPLE3(hp, mfa->module, mfa->function, make_small(mfa->arity));
     hp += 4;
     cv = TUPLE2(hp, class, value);
     hp += 3;
@@ -1165,7 +1164,7 @@ erts_trace_exception(Process* p, BeamInstr mfa[3], Eterm class, Eterm value,
  * if it is a pid or port we do a meta trace.
  */
 Uint32
-erts_call_trace(Process* p, BeamInstr mfa[3], Binary *match_spec,
+erts_call_trace(Process* p, ErtsCodeInfo *info, Binary *match_spec,
 		Eterm* args, int local, ErtsTracer *tracer)
 {
     Eterm* hp;
@@ -1244,7 +1243,7 @@ erts_call_trace(Process* p, BeamInstr mfa[3], Binary *match_spec,
      * such as size_object() and copy_struct(), we must make sure that we
      * temporarily convert any match contexts to sub binaries.
      */
-    arity = (Eterm) mfa[2];
+    arity = info->mfa.arity;
     for (i = 0; i < arity; i++) {
 	Eterm arg = args[i];
 	if (is_boxed(arg) && header_is_bin_matchstate(*boxed_val(arg))) {
@@ -1339,7 +1338,7 @@ erts_call_trace(Process* p, BeamInstr mfa[3], Binary *match_spec,
             hp += 2;
         }
     }
-    mfa_tuple = TUPLE3(hp, (Eterm) mfa[0], (Eterm) mfa[1], mfa_tuple);
+    mfa_tuple = TUPLE3(hp, info->mfa.module, info->mfa.function, mfa_tuple);
     hp += 4;
 
     /*
@@ -1459,7 +1458,8 @@ trace_gc(Process *p, Eterm what, Uint size, Eterm msg)
 }
 
 void 
-monitor_long_schedule_proc(Process *p, BeamInstr *in_fp, BeamInstr *out_fp, Uint time)
+monitor_long_schedule_proc(Process *p, ErtsCodeInfo *in_fp,
+                           ErtsCodeInfo *out_fp, Uint time)
 {
     ErlHeapFragment *bp;
     ErlOffHeap *off_heap;
@@ -1490,11 +1490,13 @@ monitor_long_schedule_proc(Process *p, BeamInstr *in_fp, BeamInstr *out_fp, Uint
     hp = ERTS_ALLOC_SYSMSG_HEAP(hsz, &bp, &off_heap, monitor_p);
     tmo = erts_bld_uint(&hp, NULL, time);
     if (in_fp != NULL) {
-	in_mfa = TUPLE3(hp,(Eterm) in_fp[0], (Eterm) in_fp[1], make_small(in_fp[2]));
+	in_mfa = TUPLE3(hp, in_fp->mfa.module, in_fp->mfa.function,
+                        make_small(in_fp->mfa.arity));
 	hp +=4;
     } 
     if (out_fp != NULL) {
-	out_mfa = TUPLE3(hp,(Eterm) out_fp[0], (Eterm) out_fp[1], make_small(out_fp[2]));
+	out_mfa = TUPLE3(hp, out_fp->mfa.module, out_fp->mfa.function,
+                         make_small(out_fp->mfa.arity));
 	hp +=4;
     } 
     tmo_tpl = TUPLE2(hp,am_timeout, tmo);
@@ -2129,7 +2131,7 @@ profile_runnable_proc(Process *p, Eterm status){
     Eterm *hp, msg;
     Eterm where = am_undefined;
     ErlHeapFragment *bp = NULL;
-    BeamInstr *current = NULL;
+    ErtsCodeInfo *ci = NULL;
 
 #ifndef ERTS_SMP
 #define LOCAL_HEAP_SIZE (4 + 6 + ERTS_TRACE_PATCH_TS_MAX_SIZE)
@@ -2151,14 +2153,14 @@ profile_runnable_proc(Process *p, Eterm status){
 
     if (!ERTS_PROC_IS_EXITING(p)) {
         if (p->current) {
-            current = p->current;
+            ci = erts_code_to_codeinfo(erts_codemfa_to_code(p->current));
         } else {
-            current = find_function_from_pc(p->i);
+            ci = find_function_from_pc(p->i);
         }
     }
 
 #ifdef ERTS_SMP
-    if (!current) {
+    if (!ci) {
 	hsz -= 4;
     }
 
@@ -2166,8 +2168,10 @@ profile_runnable_proc(Process *p, Eterm status){
     hp = bp->mem;
 #endif
 
-    if (current) {
-	where = TUPLE3(hp, current[0], current[1], make_small(current[2])); hp += 4;
+    if (ci) {
+	where = TUPLE3(hp, ci->mfa.module, ci->mfa.function,
+                       make_small(ci->mfa.arity));
+        hp += 4;
     } else {
 	where = make_small(0);
     }
diff --git a/erts/emulator/beam/erl_trace.h b/erts/emulator/beam/erl_trace.h
index 0095d4386b..74df3e50e1 100644
--- a/erts/emulator/beam/erl_trace.h
+++ b/erts/emulator/beam/erl_trace.h
@@ -101,11 +101,11 @@ void erts_send_sys_msg_proc(Eterm, Eterm, Eterm, ErlHeapFragment *);
 
 void trace_send(Process*, Eterm, Eterm);
 void trace_receive(Process*, Eterm, Eterm, ErtsTracingEvent*);
-Uint32 erts_call_trace(Process *p, BeamInstr mfa[], struct binary *match_spec,
+Uint32 erts_call_trace(Process *p, ErtsCodeInfo *info, struct binary *match_spec,
                        Eterm* args, int local, ErtsTracer *tracer);
-void erts_trace_return(Process* p, BeamInstr* fi, Eterm retval,
+void erts_trace_return(Process* p, ErtsCodeMFA *mfa, Eterm retval,
                        ErtsTracer *tracer);
-void erts_trace_exception(Process* p, BeamInstr mfa[], Eterm class, Eterm value,
+void erts_trace_exception(Process* p, ErtsCodeMFA *mfa, Eterm class, Eterm value,
                           ErtsTracer *tracer);
 void erts_trace_return_to(Process *p, BeamInstr *pc);
 void trace_sched(Process*, ErtsProcLocks, Eterm);
@@ -134,7 +134,8 @@ void erts_system_profile_setup_active_schedulers(void);
 
 /* system_monitor */
 void monitor_long_gc(Process *p, Uint time);
-void monitor_long_schedule_proc(Process *p, BeamInstr *in_i, BeamInstr *out_i, Uint time);
+void monitor_long_schedule_proc(Process *p, ErtsCodeInfo *in_i,
+                                ErtsCodeInfo *out_i, Uint time);
 void monitor_long_schedule_port(Port *pp, ErtsPortTaskType type, Uint time);
 void monitor_large_heap(Process *p);
 void monitor_generic(Process *p, Eterm type, Eterm spec);
@@ -176,7 +177,7 @@ struct trace_pattern_flags {
 };
 extern const struct trace_pattern_flags erts_trace_pattern_flags_off;
 extern int erts_call_time_breakpoint_tracing;
-int erts_set_trace_pattern(Process*p, Eterm* mfa, int specified,
+int erts_set_trace_pattern(Process*p, ErtsCodeMFA *mfa, int specified,
 			   struct binary* match_prog_set,
 			   struct binary *meta_match_prog_set,
 			   int on, struct trace_pattern_flags,
diff --git a/erts/emulator/beam/erl_vm.h b/erts/emulator/beam/erl_vm.h
index 60c2349f36..93cfe08105 100644
--- a/erts/emulator/beam/erl_vm.h
+++ b/erts/emulator/beam/erl_vm.h
@@ -186,4 +186,11 @@ extern int erts_pd_initial_size;/* Initial Process dictionary table size */
 
 #include "erl_term.h"
 
+#ifdef NO_JUMP_TABLE 
+#define BeamOp(Op) (Op)
+#else
+extern void** beam_ops;
+#define BeamOp(Op) beam_ops[(Op)]
+#endif
+
 #endif	/* __ERL_VM_H__ */
diff --git a/erts/emulator/beam/error.h b/erts/emulator/beam/error.h
index 6c33b12dd0..e431c3051b 100644
--- a/erts/emulator/beam/error.h
+++ b/erts/emulator/beam/error.h
@@ -21,6 +21,8 @@
 #ifndef __ERROR_H__
 #define __ERROR_H__
 
+#include "code_ix.h"
+
 /*
  * There are three primary exception classes:
  *
@@ -197,7 +199,7 @@ struct StackTrace {
     Eterm header;	/* bignum header - must be first in struct */
     Eterm freason; /* original exception reason is saved in the struct */
     BeamInstr* pc;
-    BeamInstr* current;
+    ErtsCodeMFA* current;
     int depth;	/* number of saved pointers in trace[] */
     BeamInstr *trace[1];  /* varying size - must be last in struct */
 };
diff --git a/erts/emulator/beam/export.c b/erts/emulator/beam/export.c
index 2a19211987..0a36175398 100644
--- a/erts/emulator/beam/export.c
+++ b/erts/emulator/beam/export.c
@@ -103,7 +103,8 @@ static HashValue
 export_hash(struct export_entry* ee)
 {
     Export* x = ee->ep;
-    return EXPORT_HASH(x->code[0], x->code[1], x->code[2]);
+    return EXPORT_HASH(x->info.mfa.module, x->info.mfa.function,
+                       x->info.mfa.arity);
 }
 
 static int
@@ -111,9 +112,9 @@ export_cmp(struct export_entry* tmpl_e, struct export_entry* obj_e)
 {
     Export* tmpl = tmpl_e->ep;
     Export* obj = obj_e->ep;
-    return !(tmpl->code[0] == obj->code[0] &&
-	     tmpl->code[1] == obj->code[1] &&
-	     tmpl->code[2] == obj->code[2]);
+    return !(tmpl->info.mfa.module == obj->info.mfa.module &&
+	     tmpl->info.mfa.function == obj->info.mfa.function &&
+	     tmpl->info.mfa.arity == obj->info.mfa.arity);
 }
 
 
@@ -130,16 +131,16 @@ export_alloc(struct export_entry* tmpl_e)
 	blob = (struct export_blob*) erts_alloc(ERTS_ALC_T_EXPORT, sizeof(*blob));
 	erts_smp_atomic_add_nob(&total_entries_bytes, sizeof(*blob));
 	obj = &blob->exp;
-	obj->fake_op_func_info_for_hipe[0] = 0;
-	obj->fake_op_func_info_for_hipe[1] = 0;
-	obj->code[0] = tmpl->code[0];
-	obj->code[1] = tmpl->code[1];
-	obj->code[2] = tmpl->code[2];
-	obj->code[3] = (BeamInstr) em_call_error_handler;
-	obj->code[4] = 0;
+	obj->info.op =  0;
+	obj->info.native = 0;
+	obj->info.mfa.module = tmpl->info.mfa.module;
+	obj->info.mfa.function = tmpl->info.mfa.function;
+	obj->info.mfa.arity = tmpl->info.mfa.arity;
+	obj->code[0] = (BeamInstr) em_call_error_handler;
+	obj->code[1] = 0;
 
 	for (ix=0; ix<ERTS_NUM_CODE_IX; ix++) {
-	    obj->addressv[ix] = obj->code+3;
+	    obj->addressv[ix] = obj->code;
 
 	    blob->entryv[ix].slot.index = -1;
 	    blob->entryv[ix].ep = &blob->exp;
@@ -224,7 +225,9 @@ erts_find_export_entry(Eterm m, Eterm f, unsigned int a, ErtsCodeIndex code_ix)
 	
     while (b != (HashBucket*) 0) {
 	Export* ep = ((struct export_entry*) b)->ep;
-	if (ep->code[0] == m && ep->code[1] == f && ep->code[2] == a) {
+	if (ep->info.mfa.module == m &&
+            ep->info.mfa.function == f &&
+            ep->info.mfa.arity == a) {
 	    return ep;
 	}
 	b = b->next;
@@ -237,9 +240,9 @@ static struct export_entry* init_template(struct export_templ* templ,
 {
     templ->entry.ep = &templ->exp;
     templ->entry.slot.index = -1;
-    templ->exp.code[0] = m;
-    templ->exp.code[1] = f;
-    templ->exp.code[2] = a;
+    templ->exp.info.mfa.module = m;
+    templ->exp.info.mfa.function = f;
+    templ->exp.info.mfa.arity = a;
     return &templ->entry;
 }
 
@@ -263,8 +266,8 @@ erts_find_function(Eterm m, Eterm f, unsigned int a, ErtsCodeIndex code_ix)
 
     ee = hash_get(&export_tables[code_ix].htable, init_template(&templ, m, f, a));
     if (ee == NULL ||
-	(ee->ep->addressv[code_ix] == ee->ep->code+3 &&
-	 ee->ep->code[3] != (BeamInstr) BeamOp(op_i_generic_breakpoint))) {
+	(ee->ep->addressv[code_ix] == ee->ep->code &&
+	 ee->ep->code[0] != (BeamInstr) BeamOp(op_i_generic_breakpoint))) {
 	return NULL;
     }
     return ee->ep;
diff --git a/erts/emulator/beam/export.h b/erts/emulator/beam/export.h
index 1e7bb8514b..a807efef94 100644
--- a/erts/emulator/beam/export.h
+++ b/erts/emulator/beam/export.h
@@ -33,22 +33,20 @@ typedef struct export
 {
     void* addressv[ERTS_NUM_CODE_IX];  /* Pointer to code for function. */
 
-    BeamInstr fake_op_func_info_for_hipe[2]; /* MUST be just before code[] */
+    ErtsCodeInfo info; /* MUST be just before code[] */
+
     /*
-     * code[0]: Tagged atom for module.
-     * code[1]: Tagged atom for function.
-     * code[2]: Arity (untagged integer).
-     * code[3]: This entry is 0 unless the 'address' field points to it.
+     * code[0]: This entry is 0 unless the 'address' field points to it.
      *          Threaded code instruction to load function
      *		(em_call_error_handler), execute BIF (em_apply_bif),
      *		or a breakpoint instruction (op_i_generic_breakpoint).
-     * code[4]: Function pointer to BIF function (for BIFs only),
+     * code[1]: Function pointer to BIF function (for BIFs only),
      *		or pointer to threaded code if the module has an
      *		on_load function that has not been run yet, or pointer
-     *          to code for function code[3] is a breakpont instruction.
+     *          to code if function code[0] is a breakpoint instruction.
      *		Otherwise: 0.
      */
-    BeamInstr code[5];
+    BeamInstr code[2];
 } Export;
 
 
@@ -74,8 +72,8 @@ extern erts_smp_mtx_t export_staging_lock;
 
 #include "beam_load.h" /* For em_* extern declarations */ 
 #define ExportIsBuiltIn(EntryPtr) 			\
-(((EntryPtr)->addressv[erts_active_code_ix()] == (EntryPtr)->code + 3) && \
- ((EntryPtr)->code[3] == (BeamInstr) em_apply_bif))
+(((EntryPtr)->addressv[erts_active_code_ix()] == (EntryPtr)->code) && \
+ ((EntryPtr)->code[0] == (BeamInstr) em_apply_bif))
 
 #if ERTS_GLB_INLINE_INCL_FUNC_DEF
 
diff --git a/erts/emulator/beam/external.c b/erts/emulator/beam/external.c
index beed847578..c297bb26b3 100644
--- a/erts/emulator/beam/external.c
+++ b/erts/emulator/beam/external.c
@@ -2826,9 +2826,10 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
 		Export* exp = *((Export **) (export_val(obj) + 1));
 		if ((dflags & DFLAG_EXPORT_PTR_TAG) != 0) {
 		    *ep++ = EXPORT_EXT;
-		    ep = enc_atom(acmp, exp->code[0], ep, dflags);
-		    ep = enc_atom(acmp, exp->code[1], ep, dflags);
-		    ep = enc_term(acmp, make_small(exp->code[2]), ep, dflags, off_heap);
+		    ep = enc_atom(acmp, exp->info.mfa.module, ep, dflags);
+		    ep = enc_atom(acmp, exp->info.mfa.function, ep, dflags);
+		    ep = enc_term(acmp, make_small(exp->info.mfa.arity),
+                                  ep, dflags, off_heap);
 		} else {
 		    /* Tag, arity */
 		    *ep++ = SMALL_TUPLE_EXT;
@@ -2836,10 +2837,10 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
 		    ep += 1;
 
 		    /* Module name */
-		    ep = enc_atom(acmp, exp->code[0], ep, dflags);
+		    ep = enc_atom(acmp, exp->info.mfa.module, ep, dflags);
 
 		    /* Function name */
-		    ep = enc_atom(acmp, exp->code[1], ep, dflags);
+		    ep = enc_atom(acmp, exp->info.mfa.function, ep, dflags);
 		}
 		break;
 	    }
@@ -4262,9 +4263,9 @@ encode_size_struct_int(TTBSizeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj,
 	    {
 		Export* ep = *((Export **) (export_val(obj) + 1));
 		result += 1;
-		result += encode_size_struct2(acmp, ep->code[0], dflags);
-		result += encode_size_struct2(acmp, ep->code[1], dflags);
-		result += encode_size_struct2(acmp, make_small(ep->code[2]), dflags);
+		result += encode_size_struct2(acmp, ep->info.mfa.module, dflags);
+		result += encode_size_struct2(acmp, ep->info.mfa.function, dflags);
+		result += encode_size_struct2(acmp, make_small(ep->info.mfa.arity), dflags);
 	    }
 	    break;
 
diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h
index 93996e8b41..c9e41bcac7 100644
--- a/erts/emulator/beam/global.h
+++ b/erts/emulator/beam/global.h
@@ -1024,7 +1024,7 @@ extern Process *erts_code_purger;
 
 /* beam_load.c */
 typedef struct {
-    BeamInstr* current;		/* Pointer to: Mod, Name, Arity */
+    ErtsCodeInfo* ci;		/* Pointer to: Mod, Name, Arity */
     Uint needed;		/* Heap space needed for entire tuple */
     Uint32 loc;			/* Location in source code */
     Eterm* fname_ptr;		/* Pointer to fname table */
@@ -1041,10 +1041,10 @@ Eterm erts_finish_loading(Binary* loader_state, Process* c_p,
 Eterm erts_preload_module(Process *c_p, ErtsProcLocks c_p_locks,
 			  Eterm group_leader, Eterm* mod, byte* code, Uint size);
 void init_load(void);
-BeamInstr* find_function_from_pc(BeamInstr* pc);
+ErtsCodeInfo* find_function_from_pc(BeamInstr* pc);
 Eterm* erts_build_mfa_item(FunctionInfo* fi, Eterm* hp,
 			   Eterm args, Eterm* mfa_p);
-void erts_set_current_function(FunctionInfo* fi, BeamInstr* current);
+void erts_set_current_function(FunctionInfo* fi, ErtsCodeMFA* mfa);
 Eterm erts_module_info_0(Process* p, Eterm module);
 Eterm erts_module_info_1(Process* p, Eterm module, Eterm what);
 Eterm erts_make_stub_module(Process* p, Eterm Mod, Eterm Beam, Eterm Info);
@@ -1577,8 +1577,7 @@ int erts_beam_jump_table(void);
 ERTS_GLB_INLINE void dtrace_pid_str(Eterm pid, char *process_buf);
 ERTS_GLB_INLINE void dtrace_proc_str(Process *process, char *process_buf);
 ERTS_GLB_INLINE void dtrace_port_str(Port *port, char *port_buf);
-ERTS_GLB_INLINE void dtrace_fun_decode(Process *process,
-				       Eterm module, Eterm function, int arity,
+ERTS_GLB_INLINE void dtrace_fun_decode(Process *process, ErtsCodeMFA *mfa,
 				       char *process_buf, char *mfa_buf);
 
 #if ERTS_GLB_INLINE_INCL_FUNC_DEF
@@ -1612,8 +1611,7 @@ dtrace_port_str(Port *port, char *port_buf)
 }
 
 ERTS_GLB_INLINE void
-dtrace_fun_decode(Process *process,
-                  Eterm module, Eterm function, int arity,
+dtrace_fun_decode(Process *process, ErtsCodeMFA *mfa,
                   char *process_buf, char *mfa_buf)
 {
     if (process_buf) {
@@ -1621,7 +1619,7 @@ dtrace_fun_decode(Process *process,
     }
 
     erts_snprintf(mfa_buf, DTRACE_TERM_BUF_SIZE, "%T:%T/%d",
-                  module, function, arity);
+                  mfa->module, mfa->function, mfa->arity);
 }
 
 #endif /* #if ERTS_GLB_INLINE_INCL_FUNC_DEF */
diff --git a/erts/emulator/beam/utils.c b/erts/emulator/beam/utils.c
index 6786657faf..cd7131f5df 100644
--- a/erts/emulator/beam/utils.c
+++ b/erts/emulator/beam/utils.c
@@ -893,11 +893,11 @@ tail_recur:
 	{
 	    Export* ep = *((Export **) (export_val(term) + 1));
 
-	    hash = hash * FUNNY_NUMBER11 + ep->code[2];
+	    hash = hash * FUNNY_NUMBER11 + ep->info.mfa.arity;
 	    hash = hash*FUNNY_NUMBER1 +
-		(atom_tab(atom_val(ep->code[0]))->slot.bucket.hvalue);
+		(atom_tab(atom_val(ep->info.mfa.module))->slot.bucket.hvalue);
 	    hash = hash*FUNNY_NUMBER1 +
-		(atom_tab(atom_val(ep->code[1]))->slot.bucket.hvalue);
+		(atom_tab(atom_val(ep->info.mfa.function))->slot.bucket.hvalue);
 	    break;
 	}
 
@@ -1330,11 +1330,11 @@ make_hash2(Eterm term)
 	    {
 		Export* ep = *((Export **) (export_val(term) + 1));
 		UINT32_HASH_2
-		    (ep->code[2],
-		     atom_tab(atom_val(ep->code[0]))->slot.bucket.hvalue,
+		    (ep->info.mfa.arity,
+		     atom_tab(atom_val(ep->info.mfa.module))->slot.bucket.hvalue,
 		     HCONST);
 		UINT32_HASH
-		    (atom_tab(atom_val(ep->code[1]))->slot.bucket.hvalue,
+		    (atom_tab(atom_val(ep->info.mfa.function))->slot.bucket.hvalue,
 		     HCONST_14);
 		goto hash2_common;
 	    }
@@ -2025,11 +2025,11 @@ tail_recur:
 	{
 	    Export* ep = *((Export **) (export_val(term) + 1));
 
-	    hash = hash * FUNNY_NUMBER11 + ep->code[2];
+	    hash = hash * FUNNY_NUMBER11 + ep->info.mfa.arity;
 	    hash = hash*FUNNY_NUMBER1 +
-		(atom_tab(atom_val(ep->code[0]))->slot.bucket.hvalue);
+		(atom_tab(atom_val(ep->info.mfa.module))->slot.bucket.hvalue);
 	    hash = hash*FUNNY_NUMBER1 +
-		(atom_tab(atom_val(ep->code[1]))->slot.bucket.hvalue);
+		(atom_tab(atom_val(ep->info.mfa.function))->slot.bucket.hvalue);
 	    break;
 	}
 
@@ -3306,13 +3306,15 @@ tailrecur_ne:
 		    Export* a_exp = *((Export **) (export_val(a) + 1));
 		    Export* b_exp = *((Export **) (export_val(b) + 1));
 
-		    if ((j = erts_cmp_atoms(a_exp->code[0], b_exp->code[0])) != 0) {
+		    if ((j = erts_cmp_atoms(a_exp->info.mfa.module,
+                                            b_exp->info.mfa.module)) != 0) {
 			RETURN_NEQ(j);
 		    }
-		    if ((j = erts_cmp_atoms(a_exp->code[1], b_exp->code[1])) != 0) {
+		    if ((j = erts_cmp_atoms(a_exp->info.mfa.function,
+                                            b_exp->info.mfa.function)) != 0) {
 			RETURN_NEQ(j);
 		    }
-		    ON_CMP_GOTO((Sint) a_exp->code[2] - (Sint) b_exp->code[2]);
+		    ON_CMP_GOTO((Sint) a_exp->info.mfa.arity - (Sint) b_exp->info.mfa.arity);
 		}
 		break;
 	    case (_TAG_HEADER_FUN >> _TAG_PRIMARY_SIZE):