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authorBjörn Gustavsson <[email protected]>2011-01-17 15:29:48 +0100
committerBjörn Gustavsson <[email protected]>2011-01-17 15:29:48 +0100
commitfaef041a446314bb228e0e8c88a09241df2798f1 (patch)
tree728f73a167f50a46b54617a6cc054807064236e9 /erts/emulator/beam/beam_debug.c
parent7bc25db7f9a70190a661b2a97734900893d33169 (diff)
parent3f1fce3929cc0cc68d7e5b1ce543bd3f20a31e2b (diff)
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Merge branch 'bjorn/beam-loader/OTP-9030' into dev
* bjorn/beam-loader/OTP-9030: (43 commits) c: Reduce memory footprint erl_posix_msg: Reduce memory footprint Introduce a few more variations of the move instructions Combine a move + jump sequence into the move_jump instruction Optimize and clean-up the exact equality/non-equality instructions Optimize addition of a small integer to a variable Introduce a special instruction for select_val with two values Introduce a few more specialized put_list instructions Eliminate the "put_list c n Dst" instructions Eliminate the specific move_sd instruction Eliminate use of GetArg1() in the badmatch and case_end instructions Eliminate use of GetArg2() in the i_element instruction Eliminate use of GetArg1() in the fast_element instruction Eliminate use of GetArg1() in the jump_on_val* instructions Eliminate use of GetArg1() in the select_val instruction beam_emu: Eliminate sloppy use of tmp_arg1 and tmp_arg2 beam_emu: Don't inline helper functions into process_main() beam_emu: Clean up calling of the error_handler module Simplify a select_val instruction that selects only one value Optimize creation of tuples ...
Diffstat (limited to 'erts/emulator/beam/beam_debug.c')
-rw-r--r--erts/emulator/beam/beam_debug.c119
1 files changed, 86 insertions, 33 deletions
diff --git a/erts/emulator/beam/beam_debug.c b/erts/emulator/beam/beam_debug.c
index b0bf14b94f..2855241b91 100644
--- a/erts/emulator/beam/beam_debug.c
+++ b/erts/emulator/beam/beam_debug.c
@@ -48,7 +48,6 @@
void dbg_bt(Process* p, Eterm* sp);
void dbg_where(BeamInstr* addr, Eterm x0, Eterm* reg);
-static void print_big(int to, void *to_arg, Eterm* addr);
static int print_op(int to, void *to_arg, int op, int size, BeamInstr* addr);
Eterm
erts_debug_same_2(Process* p, Eterm term1, Eterm term2)
@@ -157,6 +156,25 @@ void debug_dump_code(BeamInstr *I, int num)
}
#endif
+BIF_RETTYPE
+erts_debug_instructions_0(BIF_ALIST_0)
+{
+ int i = 0;
+ Uint needed = num_instructions * 2;
+ Eterm* hp;
+ Eterm res = NIL;
+
+ for (i = 0; i < num_instructions; i++) {
+ needed += 2*strlen(opc[i].name);
+ }
+ hp = HAlloc(BIF_P, needed);
+ for (i = num_instructions-1; i >= 0; i--) {
+ Eterm s = erts_bld_string_n(&hp, 0, opc[i].name, strlen(opc[i].name));
+ res = erts_bld_cons(&hp, 0, s, res);
+ }
+ return res;
+}
+
Eterm
erts_debug_disassemble_1(Process* p, Eterm addr)
{
@@ -312,6 +330,7 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr)
BeamInstr packed = 0; /* Accumulator for packed operations. */
BeamInstr args[8]; /* Arguments for this instruction. */
BeamInstr* ap; /* Pointer to arguments. */
+ BeamInstr* unpacked; /* Unpacked arguments */
start_prog = opc[op].pack;
@@ -360,6 +379,12 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr)
*ap++ = packed & BEAM_LOOSE_MASK;
packed >>= BEAM_LOOSE_SHIFT;
break;
+#ifdef ARCH_64
+ case 'w': /* Shift 32 steps */
+ *ap++ = packed & BEAM_WIDE_MASK;
+ packed >>= BEAM_WIDE_SHIFT;
+ break;
+#endif
case 'p':
*sp++ = *--ap;
break;
@@ -386,7 +411,7 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr)
break;
case 'x': /* x(N) */
if (reg_index(ap[0]) == 0) {
- erts_print(to, to_arg, "X[0]");
+ erts_print(to, to_arg, "x[0]");
} else {
erts_print(to, to_arg, "x(%d)", reg_index(ap[0]));
}
@@ -506,6 +531,7 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr)
ap++;
break;
case 'P': /* Byte offset into tuple (see beam_load.c) */
+ case 'Q': /* Like 'P', but packable */
erts_print(to, to_arg, "%d", (*ap / sizeof(Eterm)) - 1);
ap++;
break;
@@ -526,9 +552,12 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr)
* Print more information about certain instructions.
*/
+ unpacked = ap;
ap = addr + size;
switch (op) {
- case op_i_select_val_sfI:
+ case op_i_select_val_rfI:
+ case op_i_select_val_xfI:
+ case op_i_select_val_yfI:
{
int n = ap[-1];
@@ -540,7 +569,24 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr)
}
}
break;
- case op_i_jump_on_val_sfII:
+ case op_i_select_tuple_arity_rfI:
+ case op_i_select_tuple_arity_xfI:
+ case op_i_select_tuple_arity_yfI:
+ {
+ int n = ap[-1];
+
+ while (n > 0) {
+ Uint arity = arityval(ap[0]);
+ erts_print(to, to_arg, " {%d} f(" HEXF ")", arity, ap[1]);
+ ap += 2;
+ size += 2;
+ n--;
+ }
+ }
+ break;
+ case op_i_jump_on_val_rfII:
+ case op_i_jump_on_val_xfII:
+ case op_i_jump_on_val_yfII:
{
int n;
for (n = ap[-2]; n > 0; n--) {
@@ -550,39 +596,46 @@ print_op(int to, void *to_arg, int op, int size, BeamInstr* addr)
}
}
break;
- case op_i_select_big_sf:
- while (ap[0]) {
- Eterm *bigp = (Eterm *) ap;
- int arity = thing_arityval(*bigp);
- print_big(to, to_arg, bigp);
- size += TermWords(arity+1);
- ap += TermWords(arity+1);
- erts_print(to, to_arg, " f(" HEXF ") ", ap[0]);
- ap++;
- size++;
+ case op_i_jump_on_val_zero_rfI:
+ case op_i_jump_on_val_zero_xfI:
+ case op_i_jump_on_val_zero_yfI:
+ {
+ int n;
+ for (n = ap[-1]; n > 0; n--) {
+ erts_print(to, to_arg, "f(" HEXF ") ", ap[0]);
+ ap++;
+ size++;
+ }
+ }
+ break;
+ case op_i_put_tuple_rI:
+ case op_i_put_tuple_xI:
+ case op_i_put_tuple_yI:
+ {
+ int n = unpacked[-1];
+
+ while (n > 0) {
+ if (!is_header(ap[0])) {
+ erts_print(to, to_arg, " %T", (Eterm) ap[0]);
+ } else {
+ switch ((ap[0] >> 2) & 0x03) {
+ case R_REG_DEF:
+ erts_print(to, to_arg, " x(0)");
+ break;
+ case X_REG_DEF:
+ erts_print(to, to_arg, " x(%d)", ap[0] >> 4);
+ break;
+ case Y_REG_DEF:
+ erts_print(to, to_arg, " y(%d)", ap[0] >> 4);
+ break;
+ }
+ }
+ ap++, size++, n--;
+ }
}
- ap++;
- size++;
break;
}
erts_print(to, to_arg, "\n");
return size;
}
-
-static void
-print_big(int to, void *to_arg, Eterm* addr)
-{
- int i;
- int k;
-
- i = BIG_SIZE(addr);
- if (BIG_SIGN(addr))
- erts_print(to, to_arg, "-#integer(%d) = {", i);
- else
- erts_print(to, to_arg, "#integer(%d) = {", i);
- erts_print(to, to_arg, "0x%x", BIG_DIGIT(addr, 0));
- for (k = 1; k < i; k++)
- erts_print(to, to_arg, ",0x%x", BIG_DIGIT(addr, k));
- erts_print(to, to_arg, "}");
-}