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Diffstat (limited to 'erts/emulator/beam/beam_debug.c')
-rw-r--r--erts/emulator/beam/beam_debug.c139
1 files changed, 86 insertions, 53 deletions
diff --git a/erts/emulator/beam/beam_debug.c b/erts/emulator/beam/beam_debug.c
index a4ad3e7886..68559e3992 100644
--- a/erts/emulator/beam/beam_debug.c
+++ b/erts/emulator/beam/beam_debug.c
@@ -51,6 +51,7 @@ void dbg_bt(Process* p, Eterm* sp);
void dbg_where(BeamInstr* addr, Eterm x0, Eterm* reg);
static int print_op(int to, void *to_arg, int op, int size, BeamInstr* addr);
+static void print_bif_name(int to, void* to_arg, BifFunction bif);
BIF_RETTYPE
erts_debug_same_2(BIF_ALIST_2)
@@ -115,7 +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;
@@ -131,23 +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)) {
@@ -157,7 +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);
@@ -241,9 +243,9 @@ erts_debug_disassemble_1(BIF_ALIST_1)
Eterm* tp;
Eterm bin;
Eterm mfa;
- BeamInstr* funcinfo = NULL; /* Initialized to eliminate warning. */
+ ErtsCodeMFA *cmfa = NULL;
BeamCodeHeader* code_hdr;
- BeamInstr* code_ptr = NULL; /* Initialized to eliminate warning. */
+ BeamInstr *code_ptr;
BeamInstr instr;
BeamInstr uaddr;
Uint hsz;
@@ -251,7 +253,7 @@ erts_debug_disassemble_1(BIF_ALIST_1)
if (term_to_UWord(addr, &uaddr)) {
code_ptr = (BeamInstr *) uaddr;
- if ((funcinfo = find_function_from_pc(code_ptr)) == NULL) {
+ if ((cmfa = find_function_from_pc(code_ptr)) == NULL) {
BIF_RET(am_false);
}
} else if (is_tuple(addr)) {
@@ -282,24 +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;
+ cmfa = erts_code_to_codemfa(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;
+ cmfa = &code_hdr->functions[i]->mfa;
+ if (cmfa->function == name && cmfa->arity == arity) {
break;
}
}
@@ -307,6 +307,7 @@ erts_debug_disassemble_1(BIF_ALIST_1)
BIF_RET(am_undef);
}
}
+ code_ptr = erts_codemfa_to_code(cmfa);
} else {
goto error;
}
@@ -332,9 +333,10 @@ 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(cmfa->module) || is_nil(cmfa->module));
+ ASSERT(is_atom(cmfa->function) || is_nil(cmfa->function));
+ mfa = TUPLE3(hp, cmfa->module, cmfa->function,
+ make_small(cmfa->arity));
hp += 4;
return TUPLE3(hp, addr, bin, mfa);
}
@@ -346,11 +348,12 @@ dbg_bt(Process* p, Eterm* sp)
while (sp < stack) {
if (is_CP(*sp)) {
- BeamInstr* addr = find_function_from_pc(cp_val(*sp));
- if (addr)
+ ErtsCodeMFA* cmfa = find_function_from_pc(cp_val(*sp));
+ if (cmfa)
erts_fprintf(stderr,
HEXF ": %T:%T/%bpu\n",
- addr, (Eterm) addr[0], (Eterm) addr[1], addr[2]);
+ &cmfa->module, cmfa->module,
+ cmfa->function, cmfa->arity);
}
sp++;
}
@@ -359,17 +362,17 @@ dbg_bt(Process* p, Eterm* sp)
void
dbg_where(BeamInstr* addr, Eterm x0, Eterm* reg)
{
- BeamInstr* f = find_function_from_pc(addr);
+ ErtsCodeMFA* cmfa = find_function_from_pc(addr);
- if (f == NULL) {
+ if (cmfa == 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 = cmfa->arity;
+ erts_fprintf(stderr, HEXF ": %T:%T(", addr,
+ cmfa->module, cmfa->function);
for (i = 0; i < arity; i++)
erts_fprintf(stderr, i ? ", %T" : "%T", i ? reg[i] : x0);
erts_fprintf(stderr, ")\n");
@@ -520,27 +523,49 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr)
break;
case 'I': /* Untagged integer. */
case 't':
- erts_print(to, to_arg, "%d", *ap);
+ switch (op) {
+ case op_i_gc_bif1_jIsId:
+ case op_i_gc_bif2_jIIssd:
+ case op_i_gc_bif3_jIIssd:
+ {
+ const ErtsGcBif* p;
+ BifFunction gcf = (BifFunction) *ap;
+ for (p = erts_gc_bifs; p->bif != 0; p++) {
+ if (p->gc_bif == gcf) {
+ print_bif_name(to, to_arg, p->bif);
+ break;
+ }
+ }
+ if (p->bif == 0) {
+ erts_print(to, to_arg, "%d", (Uint)gcf);
+ }
+ break;
+ }
+ default:
+ erts_print(to, to_arg, "%d", *ap);
+ }
ap++;
break;
case 'f': /* Destination label */
{
- BeamInstr* f = find_function_from_pc((BeamInstr *)*ap);
- if (f+3 != (BeamInstr *) *ap) {
+ ErtsCodeMFA* cmfa = find_function_from_pc((BeamInstr *)*ap);
+ if (!cmfa || erts_codemfa_to_code(cmfa) != (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", cmfa->module,
+ cmfa->function, cmfa->arity);
}
ap++;
}
break;
case 'p': /* Pointer (to label) */
{
- BeamInstr* f = find_function_from_pc((BeamInstr *)*ap);
- if (f+3 != (BeamInstr *) *ap) {
+ ErtsCodeMFA* cmfa = find_function_from_pc((BeamInstr *)*ap);
+ if (!cmfa || erts_codemfa_to_code(cmfa) != (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", cmfa->module,
+ cmfa->function, cmfa->arity);
}
ap++;
}
@@ -553,26 +578,16 @@ 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;
case 'F': /* Function definition */
break;
case 'b':
- for (i = 0; i < BIF_SIZE; i++) {
- BifFunction bif = (BifFunction) *ap;
- if (bif == bif_table[i].f) {
- break;
- }
- }
- if (i == BIF_SIZE) {
- erts_print(to, to_arg, "b(%d)", (Uint) *ap);
- } else {
- Eterm name = bif_table[i].name;
- unsigned arity = bif_table[i].arity;
- erts_print(to, to_arg, "%T/%u", name, arity);
- }
+ print_bif_name(to, to_arg, (BifFunction) *ap);
ap++;
break;
case 'P': /* Byte offset into tuple (see beam_load.c) */
@@ -731,3 +746,21 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr)
return size;
}
+
+static void print_bif_name(int to, void* to_arg, BifFunction bif)
+{
+ int i;
+
+ for (i = 0; i < BIF_SIZE; i++) {
+ if (bif == bif_table[i].f) {
+ break;
+ }
+ }
+ if (i == BIF_SIZE) {
+ erts_print(to, to_arg, "b(%d)", (Uint) bif);
+ } else {
+ Eterm name = bif_table[i].name;
+ unsigned arity = bif_table[i].arity;
+ erts_print(to, to_arg, "%T/%u", name, arity);
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 17:09:04 +0000