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-rw-r--r--erts/emulator/beam/beam_debug.c111
-rw-r--r--erts/emulator/beam/beam_emu.c2
-rw-r--r--erts/emulator/beam/beam_load.c374
-rw-r--r--erts/emulator/beam/bif_instrs.tab14
-rw-r--r--erts/emulator/beam/erl_bif_trace.c8
-rw-r--r--erts/emulator/beam/erl_vm.h1
-rw-r--r--erts/emulator/beam/instrs.tab42
-rw-r--r--erts/emulator/beam/macros.tab19
-rw-r--r--erts/emulator/beam/msg_instrs.tab10
-rw-r--r--erts/emulator/beam/ops.tab5
-rw-r--r--erts/emulator/beam/select_instrs.tab76
-rw-r--r--erts/emulator/beam/trace_instrs.tab15
12 files changed, 472 insertions, 205 deletions
diff --git a/erts/emulator/beam/beam_debug.c b/erts/emulator/beam/beam_debug.c
index 21e295c63a..afde45ba71 100644
--- a/erts/emulator/beam/beam_debug.c
+++ b/erts/emulator/beam/beam_debug.c
@@ -53,6 +53,8 @@ void dbg_where(BeamInstr* addr, Eterm x0, Eterm* reg);
static int print_op(fmtfn_t to, void *to_arg, int op, int size, BeamInstr* addr);
static void print_bif_name(fmtfn_t to, void* to_arg, BifFunction bif);
+static BeamInstr* f_to_addr(BeamInstr* base, int op, BeamInstr* ap);
+static BeamInstr* f_to_addr_packed(BeamInstr* base, int op, Sint32* ap);
BIF_RETTYPE
erts_debug_same_2(BIF_ALIST_2)
@@ -424,7 +426,9 @@ print_op(fmtfn_t to, void *to_arg, int op, int size, BeamInstr* addr)
while (start_prog < prog) {
prog--;
switch (*prog) {
+ case 'f':
case 'g':
+ case 'q':
*ap++ = *--sp;
break;
case 'i': /* Initialize packing accumulator. */
@@ -558,9 +562,10 @@ print_op(fmtfn_t to, void *to_arg, int op, int size, BeamInstr* addr)
break;
case 'f': /* Destination label */
{
- 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);
+ BeamInstr* target = f_to_addr(addr, op, ap);
+ ErtsCodeMFA* cmfa = find_function_from_pc(target);
+ if (!cmfa || erts_codemfa_to_code(cmfa) != target) {
+ erts_print(to, to_arg, "f(" HEXF ")", target);
} else {
erts_print(to, to_arg, "%T:%T/%bpu", cmfa->module,
cmfa->function, cmfa->arity);
@@ -570,18 +575,18 @@ print_op(fmtfn_t to, void *to_arg, int op, int size, BeamInstr* addr)
break;
case 'p': /* Pointer (to label) */
{
- 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", cmfa->module,
- cmfa->function, cmfa->arity);
- }
+ BeamInstr* target = f_to_addr(addr, op, ap);
+ erts_print(to, to_arg, "p(" HEXF ")", target);
ap++;
}
break;
case 'j': /* Pointer (to label) */
- erts_print(to, to_arg, "j(" HEXF ")", *ap);
+ if (*ap == 0) {
+ erts_print(to, to_arg, "j(0)");
+ } else {
+ BeamInstr* target = f_to_addr(addr, op, ap);
+ erts_print(to, to_arg, "j(" HEXF ")", target);
+ }
ap++;
break;
case 'e': /* Export entry */
@@ -627,9 +632,12 @@ print_op(fmtfn_t to, void *to_arg, int op, int size, BeamInstr* addr)
switch (op) {
case op_i_select_val_lins_xfI:
case op_i_select_val_lins_yfI:
+ case op_i_select_val_bins_xfI:
+ case op_i_select_val_bins_yfI:
{
int n = ap[-1];
int ix = n;
+ Sint32* jump_tab = (Sint32 *)(ap + n);
while (ix--) {
erts_print(to, to_arg, "%T ", (Eterm) ap[0]);
@@ -638,23 +646,11 @@ print_op(fmtfn_t to, void *to_arg, int op, int size, BeamInstr* addr)
}
ix = n;
while (ix--) {
- erts_print(to, to_arg, "f(" HEXF ") ", (Eterm) ap[0]);
- ap++;
- size++;
- }
- }
- break;
- case op_i_select_val_bins_xfI:
- case op_i_select_val_bins_yfI:
- {
- int n = ap[-1];
-
- while (n > 0) {
- erts_print(to, to_arg, "%T f(" HEXF ") ", (Eterm) ap[0], ap[1]);
- ap += 2;
- size += 2;
- n--;
+ BeamInstr* target = f_to_addr_packed(addr, op, jump_tab);
+ erts_print(to, to_arg, "f(" HEXF ") ", target);
+ jump_tab++;
}
+ size += (n+1) / 2;
}
break;
case op_i_select_tuple_arity_xfI:
@@ -662,6 +658,7 @@ print_op(fmtfn_t to, void *to_arg, int op, int size, BeamInstr* addr)
{
int n = ap[-1];
int ix = n - 1; /* without sentinel */
+ Sint32* jump_tab = (Sint32 *)(ap + n);
while (ix--) {
Uint arity = arityval(ap[0]);
@@ -675,31 +672,54 @@ print_op(fmtfn_t to, void *to_arg, int op, int size, BeamInstr* addr)
size++;
ix = n;
while (ix--) {
- erts_print(to, to_arg, "f(" HEXF ") ", ap[0]);
- ap++;
- size++;
+ BeamInstr* target = f_to_addr_packed(addr, op, jump_tab);
+ erts_print(to, to_arg, "f(" HEXF ") ", target);
+ jump_tab++;
+ }
+ size += (n+1) / 2;
+ }
+ break;
+ case op_i_select_val2_xfcc:
+ case op_i_select_val2_yfcc:
+ case op_i_select_tuple_arity2_xfAA:
+ case op_i_select_tuple_arity2_yfAA:
+ {
+ Sint32* jump_tab = (Sint32 *) ap;
+ BeamInstr* target;
+ int i;
+
+ for (i = 0; i < 2; i++) {
+ target = f_to_addr_packed(addr, op, jump_tab++);
+ erts_print(to, to_arg, "f(" HEXF ") ", target);
}
+ size += 1;
}
break;
case op_i_jump_on_val_xfIW:
case op_i_jump_on_val_yfIW:
{
- int n;
- for (n = ap[-2]; n > 0; n--) {
- erts_print(to, to_arg, "f(" HEXF ") ", ap[0]);
- ap++;
- size++;
+ int n = ap[-2];
+ Sint32* jump_tab = (Sint32 *) ap;
+
+ size += (n+1) / 2;
+ while (n-- > 0) {
+ BeamInstr* target = f_to_addr_packed(addr, op, jump_tab);
+ erts_print(to, to_arg, "f(" HEXF ") ", target);
+ jump_tab++;
}
}
break;
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++;
+ int n = ap[-1];
+ Sint32* jump_tab = (Sint32 *) ap;
+
+ size += (n+1) / 2;
+ while (n-- > 0) {
+ BeamInstr* target = f_to_addr_packed(addr, op, jump_tab);
+ erts_print(to, to_arg, "f(" HEXF ") ", target);
+ jump_tab++;
}
}
break;
@@ -796,6 +816,17 @@ static void print_bif_name(fmtfn_t to, void* to_arg, BifFunction bif)
}
}
+static BeamInstr* f_to_addr(BeamInstr* base, int op, BeamInstr* ap)
+{
+ return base - 1 + opc[op].adjust + (Sint32) *ap;
+}
+
+static BeamInstr* f_to_addr_packed(BeamInstr* base, int op, Sint32* ap)
+{
+ return base - 1 + opc[op].adjust + *ap;
+}
+
+
/*
* Dirty BIF testing.
*
diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c
index 55990362ff..1baf3ff7ab 100644
--- a/erts/emulator/beam/beam_emu.c
+++ b/erts/emulator/beam/beam_emu.c
@@ -235,6 +235,8 @@ void** beam_ops;
ERTS_UNREQ_PROC_MAIN_LOCK((P))
#define db(N) (N)
+#define fb(N) ((Sint)(Sint32)(N))
+#define jb(N) ((Sint)(Sint32)(N))
#define tb(N) (N)
#define xb(N) (*(Eterm *) (((unsigned char *)reg) + (N)))
#define yb(N) (*(Eterm *) (((unsigned char *)E) + (N)))
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index 7d3a19ff86..3f9dc2c1aa 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -81,15 +81,28 @@ ErlDrvBinary* erts_gzinflate_buffer(char*, int);
#define TE_FAIL (-1)
#define TE_SHORT_WINDOW (-2)
+/*
+ * Type for a reference to a label that must be patched.
+ */
+
typedef struct {
- Uint value; /* Value of label (NULL if not known yet). */
- Sint patches; /* Index (into code buffer) to first
- * location which must be patched with
- * the value of this label.
- */
+ Uint pos; /* Position of label reference to patch. */
+ Uint offset; /* Offset from patch location. */
+ int packed; /* 0 (not packed), 1 (lsw), 2 (msw) */
+} LabelPatch;
+
+/*
+ * Type for a label.
+ */
+
+typedef struct {
+ Uint value; /* Value of label (0 if not known yet). */
Uint looprec_targeted; /* Non-zero if this label is the target of a loop_rec
* instruction.
*/
+ LabelPatch* patches; /* Array of label patches. */
+ Uint num_patches; /* Number of patches in array. */
+ Uint num_allocated; /* Number of allocated patches. */
} Label;
/*
@@ -226,7 +239,7 @@ typedef struct {
typedef struct literal_patch LiteralPatch;
struct literal_patch {
- int pos; /* Position in code */
+ Uint pos; /* Position in code */
LiteralPatch* next;
};
@@ -507,6 +520,7 @@ static int read_lambda_table(LoaderState* stp);
static int read_literal_table(LoaderState* stp);
static int read_line_table(LoaderState* stp);
static int read_code_header(LoaderState* stp);
+static void init_label(Label* lp);
static int load_code(LoaderState* stp);
static GenOp* gen_element(LoaderState* stp, GenOpArg Fail, GenOpArg Index,
GenOpArg Tuple, GenOpArg Dst);
@@ -1051,6 +1065,10 @@ loader_state_dtor(Binary* magic)
stp->codev = 0;
}
if (stp->labels != 0) {
+ Uint num;
+ for (num = 0; num < stp->num_labels; num++) {
+ erts_free(ERTS_ALC_T_PREPARED_CODE, (void *) stp->labels[num].patches);
+ }
erts_free(ERTS_ALC_T_PREPARED_CODE, (void *) stp->labels);
stp->labels = 0;
}
@@ -1534,7 +1552,7 @@ read_export_table(LoaderState* stp)
* any other functions that walk through all local functions.
*/
- if (stp->labels[n].patches >= 0) {
+ if (stp->labels[n].num_patches > 0) {
LoadError3(stp, "there are local calls to the stub for "
"the BIF %T:%T/%d",
stp->module, func, arity);
@@ -1880,9 +1898,7 @@ read_code_header(LoaderState* stp)
stp->labels = (Label *) erts_alloc(ERTS_ALC_T_PREPARED_CODE,
stp->num_labels * sizeof(Label));
for (i = 0; i < stp->num_labels; i++) {
- stp->labels[i].value = 0;
- stp->labels[i].patches = -1;
- stp->labels[i].looprec_targeted = 0;
+ init_label(&stp->labels[i]);
}
stp->catches = 0;
@@ -1911,12 +1927,43 @@ read_code_header(LoaderState* stp)
#define TermWords(t) (((t) / (sizeof(BeamInstr)/sizeof(Eterm))) + !!((t) % (sizeof(BeamInstr)/sizeof(Eterm))))
+static void init_label(Label* lp)
+{
+ lp->value = 0;
+ lp->looprec_targeted = 0;
+ lp->num_patches = 0;
+ lp->num_allocated = 4;
+ lp->patches = erts_alloc(ERTS_ALC_T_PREPARED_CODE,
+ lp->num_allocated * sizeof(LabelPatch));
+}
+
+static void
+register_label_patch(LoaderState* stp, Uint label, Uint ci, Uint offset)
+{
+ Label* lp;
+
+ ASSERT(label < stp->num_labels);
+ lp = &stp->labels[label];
+ if (lp->num_allocated <= lp->num_patches) {
+ lp->num_allocated *= 2;
+ lp->patches = erts_realloc(ERTS_ALC_T_PREPARED_CODE,
+ (void *) lp->patches,
+ lp->num_allocated * sizeof(LabelPatch));
+ }
+ lp->patches[lp->num_patches].pos = ci;
+ lp->patches[lp->num_patches].offset = offset;
+ lp->patches[lp->num_patches].packed = 0;
+ lp->num_patches++;
+ stp->codev[ci] = label;
+}
+
static int
load_code(LoaderState* stp)
{
int i;
- int ci;
- int last_func_start = 0; /* Needed by nif loading and line instructions */
+ Uint ci;
+ Uint last_instr_start; /* Needed for relative jumps */
+ Uint last_func_start = 0; /* Needed by nif loading and line instructions */
char* sign;
int arg; /* Number of current argument. */
int num_specific; /* Number of specific ops for current. */
@@ -1929,6 +1976,9 @@ load_code(LoaderState* stp)
GenOp** last_op_next = NULL;
int arity;
int retval = 1;
+#if defined(BEAM_WIDE_SHIFT)
+ int num_trailing_f; /* Number of extra 'f' arguments in a list */
+#endif
/*
* The size of the loaded func_info instruction is needed
@@ -2272,6 +2322,7 @@ load_code(LoaderState* stp)
stp->specific_op = specific;
CodeNeed(opc[stp->specific_op].sz+16); /* Extra margin for packing */
+ last_instr_start = ci + opc[stp->specific_op].adjust;
code[ci++] = BeamOpCode(stp->specific_op);
}
@@ -2401,16 +2452,14 @@ load_code(LoaderState* stp)
break;
case 'f': /* Destination label */
VerifyTag(stp, tag_to_letter[tag], *sign);
- code[ci] = stp->labels[tmp_op->a[arg].val].patches;
- stp->labels[tmp_op->a[arg].val].patches = ci;
+ register_label_patch(stp, tmp_op->a[arg].val, ci, -last_instr_start);
ci++;
break;
case 'j': /* 'f' or 'p' */
if (tag == TAG_p) {
code[ci] = 0;
} else if (tag == TAG_f) {
- code[ci] = stp->labels[tmp_op->a[arg].val].patches;
- stp->labels[tmp_op->a[arg].val].patches = ci;
+ register_label_patch(stp, tmp_op->a[arg].val, ci, -last_instr_start);
} else {
LoadError3(stp, "bad tag %d; expected %d or %d",
tag, TAG_f, TAG_p);
@@ -2430,7 +2479,6 @@ load_code(LoaderState* stp)
LoadError1(stp, "label %d defined more than once", last_label);
}
stp->labels[last_label].value = ci;
- ASSERT(stp->labels[last_label].patches < ci);
break;
case 'e': /* Export entry */
VerifyTag(stp, tag, TAG_u);
@@ -2479,23 +2527,58 @@ load_code(LoaderState* stp)
char* prog; /* Program for packing engine. */
struct pack_stack {
BeamInstr instr;
- LiteralPatch* patch;
+ Uint* patch_pos;
} stack[8]; /* Stack. */
struct pack_stack* sp = stack; /* Points to next free position. */
BeamInstr packed = 0; /* Accumulator for packed operations. */
+ LabelPatch* packed_label = 0;
for (prog = opc[stp->specific_op].pack; *prog; prog++) {
switch (*prog) {
- case 'g': /* Get instruction; push on stack. */
+ case 'g': /* Get operand and push on stack. */
+ ci--;
+ sp->instr = code[ci];
+ sp->patch_pos = 0;
+ sp++;
+ break;
+ case 'f': /* Get possible 'f' operand and push on stack. */
+ {
+ Uint w = code[--ci];
+ sp->instr = w;
+ sp->patch_pos = 0;
+
+ if (w != 0) {
+ LabelPatch* lbl_p;
+ int num_patches;
+ int patch;
+
+ ASSERT(w < stp->num_labels);
+ lbl_p = stp->labels[w].patches;
+ num_patches = stp->labels[w].num_patches;
+ for (patch = num_patches - 1; patch >= 0; patch--) {
+ if (lbl_p[patch].pos == ci) {
+ sp->patch_pos = &lbl_p[patch].pos;
+ break;
+ }
+ }
+ ASSERT(sp->patch_pos);
+ }
+ sp++;
+ }
+ break;
+ case 'q': /* Get possible 'q' operand and push on stack. */
{
LiteralPatch* lp;
ci--;
sp->instr = code[ci];
- sp->patch = 0;
- for (lp = stp->literal_patches; lp && lp->pos > ci-MAX_OPARGS; lp = lp->next) {
+ sp->patch_pos = 0;
+
+ for (lp = stp->literal_patches;
+ lp && lp->pos > ci-MAX_OPARGS;
+ lp = lp->next) {
if (lp->pos == ci) {
- sp->patch = lp;
+ sp->patch_pos = &lp->pos;
break;
}
}
@@ -2507,28 +2590,68 @@ load_code(LoaderState* stp)
break;
case '0': /* Tight shift */
packed = (packed << BEAM_TIGHT_SHIFT) | code[--ci];
+ if (packed_label) {
+ packed_label->packed++;
+ }
break;
case '6': /* Shift 16 steps */
packed = (packed << BEAM_LOOSE_SHIFT) | code[--ci];
+ if (packed_label) {
+ packed_label->packed++;
+ }
break;
#ifdef ARCH_64
case 'w': /* Shift 32 steps */
- packed = (packed << BEAM_WIDE_SHIFT) | code[--ci];
- break;
+ {
+ Uint w = code[--ci];
+
+ if (packed_label) {
+ packed_label->packed++;
+ }
+
+ /*
+ * 'w' can handle both labels ('f' and 'j'), as well
+ * as 'I'. Test whether this is a label.
+ */
+
+ if (w < stp->num_labels) {
+ /*
+ * Probably a label. Look for patch pointing to this
+ * position.
+ */
+ LabelPatch* lp = stp->labels[w].patches;
+ int num_patches = stp->labels[w].num_patches;
+ int patch;
+ for (patch = num_patches - 1; patch >= 0; patch--) {
+ if (lp[patch].pos == ci) {
+ lp[patch].packed = 1;
+ packed_label = &lp[patch];
+ break;
+ }
+ }
+ }
+ packed = (packed << BEAM_WIDE_SHIFT) |
+ (code[ci] & BEAM_WIDE_MASK);
+ }
+ break;
#endif
case 'p': /* Put instruction (from stack). */
--sp;
code[ci] = sp->instr;
- if (sp->patch) {
- sp->patch->pos = ci;
+ if (sp->patch_pos) {
+ *sp->patch_pos = ci;
}
ci++;
break;
case 'P': /* Put packed operands. */
sp->instr = packed;
- sp->patch = 0;
+ sp->patch_pos = 0;
sp++;
packed = 0;
+ if (packed_label) {
+ packed_label->pos = ci;
+ packed_label = 0;
+ }
break;
default:
ASSERT(0);
@@ -2541,7 +2664,17 @@ load_code(LoaderState* stp)
* Load any list arguments using the primitive tags.
*/
+#if defined(BEAM_WIDE_SHIFT)
+ num_trailing_f = 0;
+#endif
for ( ; arg < tmp_op->arity; arg++) {
+#if defined(BEAM_WIDE_SHIFT)
+ if (tmp_op->a[arg].type == TAG_f) {
+ num_trailing_f++;
+ } else {
+ num_trailing_f = 0;
+ }
+#endif
switch (tmp_op->a[arg].type) {
case TAG_i:
CodeNeed(1);
@@ -2555,8 +2688,7 @@ load_code(LoaderState* stp)
break;
case TAG_f:
CodeNeed(1);
- code[ci] = stp->labels[tmp_op->a[arg].val].patches;
- stp->labels[tmp_op->a[arg].val].patches = ci;
+ register_label_patch(stp, tmp_op->a[arg].val, ci, -last_instr_start);
ci++;
break;
case TAG_x:
@@ -2582,6 +2714,61 @@ load_code(LoaderState* stp)
}
}
+ /*
+ * If all the extra arguments were 'f' operands,
+ * and the wordsize is 64 bits, pack two 'f' operands
+ * into each word.
+ */
+
+#if defined(BEAM_WIDE_SHIFT)
+ if (num_trailing_f >= 1) {
+ Uint src_index = ci - num_trailing_f;
+ Uint src_limit = ci;
+ Uint dst_limit = src_index + (num_trailing_f+1)/2;
+
+ ci = src_index;
+ while (ci < dst_limit) {
+ Uint w[2];
+ BeamInstr packed = 0;
+ int wi;
+
+ w[0] = code[src_index];
+ if (src_index+1 < src_limit) {
+ w[1] = code[src_index+1];
+ } else {
+ w[1] = 0;
+ }
+ for (wi = 0; wi < 2; wi++) {
+ Uint lbl = w[wi];
+ LabelPatch* lp = stp->labels[lbl].patches;
+ int num_patches = stp->labels[lbl].num_patches;
+
+#if defined(WORDS_BIGENDIAN)
+ packed <<= BEAM_WIDE_SHIFT;
+ packed |= lbl & BEAM_WIDE_MASK;
+#else
+ packed >>= BEAM_WIDE_SHIFT;
+ packed |= lbl << BEAM_WIDE_SHIFT;
+#endif
+ while (num_patches-- > 0) {
+ if (lp->pos == src_index + wi) {
+ lp->pos = ci;
+#if defined(WORDS_BIGENDIAN)
+ lp->packed = 2 - wi;
+#else
+ lp->packed = wi + 1;
+#endif
+ break;
+ }
+ lp++;
+ }
+ }
+ code[ci++] = packed;
+ src_index += 2;
+ }
+ }
+#endif
+
/*
* Handle a few special cases.
*/
@@ -2628,17 +2815,16 @@ load_code(LoaderState* stp)
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] = (ErtsCodeInfo*) stp->labels[last_label].patches;
offset = function_number;
- stp->labels[last_label].patches = offset;
+ register_label_patch(stp, last_label, offset, 0);
function_number++;
if (stp->arity > MAX_ARG) {
LoadError1(stp, "too many arguments: %d", stp->arity);
}
#ifdef DEBUG
- ASSERT(stp->labels[0].patches < 0); /* Should not be referenced. */
+ ASSERT(stp->labels[0].num_patches == 0); /* Should not be referenced. */
for (i = 1; i < stp->num_labels; i++) {
- ASSERT(stp->labels[i].patches < ci);
+ ASSERT(stp->labels[i].num_patches <= stp->labels[i].num_allocated);
}
#endif
}
@@ -3563,7 +3749,7 @@ gen_select_tuple_arity(LoaderState* stp, GenOpArg S, GenOpArg Fail,
if (size == 2) {
NEW_GENOP(stp, op);
op->next = NULL;
- op->op = genop_i_select_tuple_arity2_6;
+ op->op = genop_i_select_tuple_arity2_4;
GENOP_ARITY(op, arity - 1);
op->a[0] = S;
op->a[1] = Fail;
@@ -3853,14 +4039,13 @@ gen_select_val(LoaderState* stp, GenOpArg S, GenOpArg Fail,
int i, j, align = 0;
if (size == 2) {
-
/*
* Use a special-cased instruction if there are only two values.
*/
NEW_GENOP(stp, op);
op->next = NULL;
- op->op = genop_i_select_val2_6;
+ op->op = genop_i_select_val2_4;
GENOP_ARITY(op, arity - 1);
op->a[0] = S;
op->a[1] = Fail;
@@ -3870,47 +4055,19 @@ gen_select_val(LoaderState* stp, GenOpArg S, GenOpArg Fail,
op->a[5] = Rest[3];
return op;
-
- } else if (size > 10) {
-
- /* binary search instruction */
-
- NEW_GENOP(stp, op);
- op->next = NULL;
- op->op = genop_i_select_val_bins_3;
- GENOP_ARITY(op, arity);
- op->a[0] = S;
- op->a[1] = Fail;
- op->a[2].type = TAG_u;
- op->a[2].val = size;
- for (i = 3; i < arity; i++) {
- op->a[i] = Rest[i-3];
- }
-
- /*
- * Sort the values to make them useful for a binary search.
- */
-
- qsort(op->a+3, size, 2*sizeof(GenOpArg),
- (int (*)(const void *, const void *)) genopargcompare);
-#ifdef DEBUG
- for (i = 3; i < arity-2; i += 2) {
- ASSERT(op->a[i].val < op->a[i+2].val);
- }
-#endif
- return op;
}
- /* linear search instruction */
-
- align = 1;
+ if (size <= 10) {
+ /* Use linear search. Reserve place for a sentinel. */
+ align = 1;
+ }
arity += 2*align;
size += align;
NEW_GENOP(stp, op);
op->next = NULL;
- op->op = genop_i_select_val_lins_3;
+ op->op = (align == 0) ? genop_i_select_val_bins_3 : genop_i_select_val_lins_3;
GENOP_ARITY(op, arity);
op->a[0] = S;
op->a[1] = Fail;
@@ -3924,7 +4081,7 @@ gen_select_val(LoaderState* stp, GenOpArg S, GenOpArg Fail,
}
/*
- * Sort the values to make them useful for a sentinel search
+ * Sort the values to make them useful for a binary or sentinel search.
*/
qsort(tmp, size - align, 2*sizeof(GenOpArg),
@@ -3939,11 +4096,12 @@ gen_select_val(LoaderState* stp, GenOpArg S, GenOpArg Fail,
erts_free(ERTS_ALC_T_LOADER_TMP, (void *) tmp);
- /* add sentinel */
-
- op->a[j].type = TAG_u;
- op->a[j].val = ~((BeamInstr)0);
- op->a[j+size] = Fail;
+ if (align) {
+ /* Add sentinel for linear search. */
+ op->a[j].type = TAG_u;
+ op->a[j].val = ~((BeamInstr)0);
+ op->a[j+size] = Fail;
+ }
#ifdef DEBUG
for (i = 0; i < size - 1; i++) {
@@ -4827,21 +4985,57 @@ freeze_code(LoaderState* stp)
*/
for (i = 0; i < stp->num_labels; i++) {
- Sint this_patch;
- Sint next_patch;
+ Uint patch;
Uint value = stp->labels[i].value;
-
- if (value == 0 && stp->labels[i].patches >= 0) {
+
+ if (value == 0 && stp->labels[i].num_patches != 0) {
LoadError1(stp, "label %d not resolved", i);
}
ASSERT(value < stp->ci);
- this_patch = stp->labels[i].patches;
- while (this_patch >= 0) {
- ASSERT(this_patch < stp->ci);
- next_patch = codev[this_patch];
- ASSERT(next_patch < stp->ci);
- codev[this_patch] = (BeamInstr) (codev + value);
- this_patch = next_patch;
+ for (patch = 0; patch < stp->labels[i].num_patches; patch++) {
+ LabelPatch* lp = &stp->labels[i].patches[patch];
+ Uint pos = lp->pos;
+ ASSERT(pos < stp->ci);
+ if (pos < stp->num_functions) {
+ /*
+ * This is the array of pointers to the beginning of
+ * each function. The pointers must remain absolute.
+ */
+ codev[pos] = (BeamInstr) (codev + value);
+ } else {
+#ifdef DEBUG
+ Uint w;
+#endif
+ Sint32 rel = lp->offset + value;
+ switch (lp->packed) {
+ case 0: /* Not packed */
+ ASSERT(codev[pos] == i);
+ codev[pos] = rel;
+ break;
+#ifdef BEAM_WIDE_MASK
+ case 1: /* Least significant word. */
+#ifdef DEBUG
+ w = codev[pos] & BEAM_WIDE_MASK;
+ /* Correct label in least significant word? */
+ ASSERT(w == i);
+#endif
+ codev[pos] = (codev[pos] & ~BEAM_WIDE_MASK) |
+ (rel & BEAM_WIDE_MASK);
+ break;
+ case 2: /* Most significant word */
+#ifdef DEBUG
+ w = (codev[pos] >> BEAM_WIDE_SHIFT) & BEAM_WIDE_MASK;
+ /* Correct label in most significant word? */
+ ASSERT(w == i);
+#endif
+ codev[pos] = ((Uint)rel << BEAM_WIDE_SHIFT) |
+ (codev[pos] & BEAM_WIDE_MASK);
+ break;
+#endif
+ default:
+ ASSERT(0);
+ }
+ }
}
}
CHKBLK(ERTS_ALC_T_CODE,code_hdr);
@@ -4884,8 +5078,11 @@ final_touch(LoaderState* stp, struct erl_module_instance* inst_p)
catches = BEAM_CATCHES_NIL;
while (index != 0) {
BeamInstr next = codev[index];
+ BeamInstr* abs_addr;
codev[index] = BeamOpCode(op_catch_yf);
- catches = beam_catches_cons((BeamInstr *)codev[index+2], catches);
+ /* We must make the address of the label absolute again. */
+ abs_addr = (BeamInstr *)codev + index + codev[index+2];
+ catches = beam_catches_cons(abs_addr, catches);
codev[index+2] = make_catch(catches);
index = next;
}
@@ -5573,8 +5770,7 @@ new_label(LoaderState* stp)
stp->labels = (Label *) erts_realloc(ERTS_ALC_T_PREPARED_CODE,
(void *) stp->labels,
stp->num_labels * sizeof(Label));
- stp->labels[num].value = 0;
- stp->labels[num].patches = -1;
+ init_label(&stp->labels[num]);
return num;
}
diff --git a/erts/emulator/beam/bif_instrs.tab b/erts/emulator/beam/bif_instrs.tab
index 3c95113907..0932b8b985 100644
--- a/erts/emulator/beam/bif_instrs.tab
+++ b/erts/emulator/beam/bif_instrs.tab
@@ -151,7 +151,7 @@ i_gc_bif1(Fail, Bif, Src, Live, Dst) {
$NEXT0();
}
if (ERTS_LIKELY($Fail != 0)) { /* Handle error in guard. */
- $NEXT($Fail);
+ $JUMP($Fail);
}
/* Handle error in body. */
@@ -202,7 +202,7 @@ i_gc_bif2(Fail, Bif, Live, Src1, Src2, Dst) {
}
if (ERTS_LIKELY($Fail != 0)) { /* Handle error in guard. */
- $NEXT($Fail);
+ $JUMP($Fail);
}
/* Handle error in body. */
@@ -257,7 +257,7 @@ i_gc_bif3(Fail, Bif, Live, Src2, Src3, Dst) {
/* Handle error in guard. */
if (ERTS_LIKELY($Fail != 0)) {
- $NEXT($Fail);
+ $JUMP($Fail);
}
/* Handle error in body. */
@@ -473,10 +473,10 @@ nif_bif.apply_bif() {
/* 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).
- */
+ $SET_CP_I_ABS(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, codemfa);
SWAPOUT;
diff --git a/erts/emulator/beam/erl_bif_trace.c b/erts/emulator/beam/erl_bif_trace.c
index b02f966558..2859cdb0f1 100644
--- a/erts/emulator/beam/erl_bif_trace.c
+++ b/erts/emulator/beam/erl_bif_trace.c
@@ -1367,7 +1367,7 @@ erts_set_trace_pattern(Process*p, ErtsCodeMFA *mfa, int specified,
#ifdef DEBUG
ep->info.op = (BeamInstr) BeamOp(op_i_func_info_IaaI);
#endif
- ep->beam[0] = (BeamInstr) BeamOp(op_jump_f);
+ ep->beam[0] = (BeamInstr) BeamOp(op_trace_jump_W);
ep->beam[1] = (BeamInstr) ep->addressv[code_ix];
}
erts_set_call_trace_bif(ci, match_prog_set, 0);
@@ -1383,7 +1383,7 @@ erts_set_trace_pattern(Process*p, ErtsCodeMFA *mfa, int specified,
*/
erts_clear_call_trace_bif(ci, 0);
if (ep->beam[0] == (BeamInstr) BeamOp(op_i_generic_breakpoint)) {
- ep->beam[0] = (BeamInstr) BeamOp(op_jump_f);
+ ep->beam[0] = (BeamInstr) BeamOp(op_trace_jump_W);
}
}
}
@@ -1675,7 +1675,7 @@ uninstall_exp_breakpoints(BpFunctions* f)
if (ep->addressv[code_ix] != ep->beam) {
continue;
}
- ASSERT(ep->beam[0] == (BeamInstr) BeamOp(op_jump_f));
+ ASSERT(ep->beam[0] == (BeamInstr) BeamOp(op_trace_jump_W));
ep->addressv[code_ix] = (BeamInstr *) ep->beam[1];
}
}
@@ -1694,7 +1694,7 @@ clean_export_entries(BpFunctions* f)
if (ep->addressv[code_ix] == ep->beam) {
continue;
}
- if (ep->beam[0] == (BeamInstr) BeamOp(op_jump_f)) {
+ if (ep->beam[0] == (BeamInstr) BeamOp(op_trace_jump_W)) {
ep->beam[0] = (BeamInstr) 0;
ep->beam[1] = (BeamInstr) 0;
}
diff --git a/erts/emulator/beam/erl_vm.h b/erts/emulator/beam/erl_vm.h
index f2d0af64df..076767c7cd 100644
--- a/erts/emulator/beam/erl_vm.h
+++ b/erts/emulator/beam/erl_vm.h
@@ -159,6 +159,7 @@ typedef struct op_entry {
Uint32 mask[3]; /* Signature mask. */
unsigned involves_r; /* Needs special attention when matching. */
int sz; /* Number of loaded words. */
+ int adjust; /* Adjustment for start of instruction. */
char* pack; /* Instructions for packing engine. */
char* sign; /* Signature string. */
} OpEntry;
diff --git a/erts/emulator/beam/instrs.tab b/erts/emulator/beam/instrs.tab
index b79b960fd7..7ea9dee299 100644
--- a/erts/emulator/beam/instrs.tab
+++ b/erts/emulator/beam/instrs.tab
@@ -78,7 +78,14 @@ move_deallocate_return(Src, Deallocate) {
// Call instructions
-DISPATCH(CallDest) {
+DISPATCH_REL(CallDest) {
+ //| -no_next
+ $SET_I_REL($CallDest);
+ DTRACE_LOCAL_CALL(c_p, erts_code_to_codemfa(I));
+ Dispatch();
+}
+
+DISPATCH_ABS(CallDest) {
//| -no_next
SET_I((BeamInstr *) $CallDest);
DTRACE_LOCAL_CALL(c_p, erts_code_to_codemfa(I));
@@ -87,18 +94,18 @@ DISPATCH(CallDest) {
i_call(CallDest) {
SET_CP(c_p, $NEXT_INSTRUCTION);
- $DISPATCH($CallDest);
+ $DISPATCH_REL($CallDest);
}
move_call(Src, CallDest) {
x(0) = $Src;
SET_CP(c_p, $NEXT_INSTRUCTION);
- $DISPATCH($CallDest);
+ $DISPATCH_REL($CallDest);
}
i_call_last(CallDest, Deallocate) {
$deallocate($Deallocate);
- $DISPATCH($CallDest);
+ $DISPATCH_REL($CallDest);
}
move_call_last(Src, CallDest, Deallocate) {
@@ -107,7 +114,7 @@ move_call_last(Src, CallDest, Deallocate) {
}
i_call_only(CallDest) {
- $DISPATCH($CallDest);
+ $DISPATCH_REL($CallDest);
}
move_call_only(Src, CallDest) {
@@ -168,7 +175,8 @@ i_apply() {
BeamInstr *next;
$APPLY(NULL, 0, next);
if (ERTS_LIKELY(next != NULL)) {
- $i_call(next);
+ SET_CP(c_p, $NEXT_INSTRUCTION);
+ $DISPATCH_ABS(next);
}
$HANDLE_APPLY_ERROR();
}
@@ -177,7 +185,8 @@ i_apply_last(Deallocate) {
BeamInstr *next;
$APPLY(I, $Deallocate, next);
if (ERTS_LIKELY(next != NULL)) {
- $i_call_last(next, $Deallocate);
+ $deallocate($Deallocate);
+ $DISPATCH_ABS(next);
}
$HANDLE_APPLY_ERROR();
}
@@ -186,7 +195,7 @@ i_apply_only() {
BeamInstr *next;
$APPLY(I, 0, next);
if (ERTS_LIKELY(next != NULL)) {
- $i_call_only(next);
+ $DISPATCH_ABS(next);
}
$HANDLE_APPLY_ERROR();
}
@@ -202,7 +211,8 @@ apply(Arity) {
BeamInstr *next;
$FIXED_APPLY($Arity, NULL, 0, next);
if (ERTS_LIKELY(next != NULL)) {
- $i_call(next);
+ SET_CP(c_p, $NEXT_INSTRUCTION);
+ $DISPATCH_ABS(next);
}
$HANDLE_APPLY_ERROR();
}
@@ -211,7 +221,8 @@ apply_last(Arity, Deallocate) {
BeamInstr *next;
$FIXED_APPLY($Arity, I, $Deallocate, next);
if (ERTS_LIKELY(next != NULL)) {
- $i_call_last(next, $Deallocate);
+ $deallocate($Deallocate);
+ $DISPATCH_ABS(next);
}
$HANDLE_APPLY_ERROR();
}
@@ -560,6 +571,7 @@ i_put_tuple.fill(Arity) {
}
} while (--arity != 0);
HTOP = hp;
+ ASSERT(VALID_INSTR(* (Eterm *)I));
Goto(*I);
}
@@ -731,9 +743,10 @@ is_reference(Fail, Src) {
}
is_tagged_tuple(Fail, Src, Arityval, Tag) {
- if (!(BEAM_IS_TUPLE($Src) &&
- (tuple_val($Src))[0] == $Arityval &&
- (tuple_val($Src))[1] == $Tag)) {
+ Eterm term = $Src;
+ if (!(BEAM_IS_TUPLE(term) &&
+ (tuple_val(term))[0] == $Arityval &&
+ (tuple_val(term))[1] == $Tag)) {
$FAIL($Fail);
}
}
@@ -745,7 +758,8 @@ is_tuple(Fail, Src) {
}
is_tuple_of_arity(Fail, Src, Arityval) {
- if (!(BEAM_IS_TUPLE($Src) && *tuple_val($Src) == $Arityval)) {
+ Eterm term = $Src;
+ if (!(BEAM_IS_TUPLE(term) && *tuple_val(term) == $Arityval)) {
$FAIL($Fail);
}
}
diff --git a/erts/emulator/beam/macros.tab b/erts/emulator/beam/macros.tab
index 35bbc92fea..6f9b78af6f 100644
--- a/erts/emulator/beam/macros.tab
+++ b/erts/emulator/beam/macros.tab
@@ -28,15 +28,30 @@ REFRESH_GEN_DEST() {
dst_ptr = REG_TARGET_PTR(dst);
}
+SET_I_REL(Offset) {
+ ASSERT(VALID_INSTR(*(I + ($Offset))));
+ I += $Offset;
+}
+
+SET_CP_I_ABS(Target) {
+ c_p->i = $Target;
+ ASSERT(VALID_INSTR(*c_p->i));
+}
+
+SET_REL_I(Dst, Offset) {
+ $Dst = I + ($Offset);
+ ASSERT(VALID_INSTR(*$Dst));
+}
+
FAIL(Fail) {
//| -no_prefetch
- SET_I((BeamInstr *) $Fail);
+ $SET_I_REL($Fail);
Goto(*I);
}
JUMP(Fail) {
//| -no_next
- SET_I((BeamInstr *) $Fail);
+ $SET_I_REL($Fail);
Goto(*I);
}
diff --git a/erts/emulator/beam/msg_instrs.tab b/erts/emulator/beam/msg_instrs.tab
index 093d48c64c..8055a8616f 100644
--- a/erts/emulator/beam/msg_instrs.tab
+++ b/erts/emulator/beam/msg_instrs.tab
@@ -49,7 +49,7 @@ recv_mark(Dest) {
* the label for the loop_rec/2 instruction for the
* the receive statement.
*/
- c_p->msg.mark = (BeamInstr *) $Dest;
+ $SET_REL_I(c_p->msg.mark, $Dest);
c_p->msg.saved_last = c_p->msg.last;
}
@@ -116,7 +116,7 @@ i_loop_rec(Dest) {
erts_proc_unlock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
} else {
c_p->flags &= ~F_DELAY_GC;
- SET_I((BeamInstr *) $Dest);
+ $SET_I_REL($Dest);
Goto(*I); /* Jump to a wait or wait_timeout instruction */
}
}
@@ -253,7 +253,7 @@ loop_rec_end(Dest) {
ASSERT(c_p->flags & F_DELAY_GC);
- SET_I((BeamInstr *) $Dest);
+ $SET_I_REL($Dest);
SAVE_MESSAGE(c_p);
if (FCALLS > 0 || FCALLS > neg_o_reds) {
FCALLS--;
@@ -261,7 +261,7 @@ loop_rec_end(Dest) {
}
c_p->flags &= ~F_DELAY_GC;
- c_p->i = I;
+ $SET_CP_I_ABS(I);
SWAPOUT;
c_p->arity = 0;
c_p->current = NULL;
@@ -374,7 +374,7 @@ wait.src(Src) {
//
wait.execute(JumpTarget) {
- c_p->i = (BeamInstr *) $JumpTarget; /* L1 */
+ $SET_REL_I(c_p->i, $JumpTarget); /* L1 */
SWAPOUT;
c_p->arity = 0;
diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab
index 3c9f5a4073..87ff92d354 100644
--- a/erts/emulator/beam/ops.tab
+++ b/erts/emulator/beam/ops.tab
@@ -69,6 +69,7 @@ i_debug_breakpoint
i_return_time_trace
i_return_to_trace
i_yield
+trace_jump W
%hot
return
@@ -161,11 +162,11 @@ i_select_val_bins xy f I
i_select_val_lins xy f I
-i_select_val2 xy f c c f f
+i_select_val2 xy f c c
i_select_tuple_arity xy f I
-i_select_tuple_arity2 xy f A A f f
+i_select_tuple_arity2 xy f A A
i_jump_on_val_zero xy f I
diff --git a/erts/emulator/beam/select_instrs.tab b/erts/emulator/beam/select_instrs.tab
index e85ed2c304..2951949d38 100644
--- a/erts/emulator/beam/select_instrs.tab
+++ b/erts/emulator/beam/select_instrs.tab
@@ -30,16 +30,15 @@ select_val_bins.fetch(Src) {
}
select_val_bins.select(Fail, NumElements) {
- struct Pairs {
+ struct Singleton {
BeamInstr val;
- BeamInstr* addr;
};
- struct Pairs* low;
- struct Pairs* high;
- struct Pairs* mid;
+ struct Singleton* low;
+ struct Singleton* high;
+ struct Singleton* mid;
int bdiff; /* int not long because the arrays aren't that large */
- low = (struct Pairs *) (&$NumElements + 1);
+ low = (struct Singleton *) ($NEXT_INSTRUCTION);
high = low + $NumElements;
/* The pointer subtraction (high-low) below must produce
@@ -60,80 +59,73 @@ select_val_bins.select(Fail, NumElements) {
*
*/
while ((bdiff = (int)((char*)high - (char*)low)) > 0) {
- unsigned int boffset = ((unsigned int)bdiff >> 1) & ~(sizeof(struct Pairs)-1);
+ unsigned int boffset = ((unsigned int)bdiff >> 1) & ~(sizeof(struct Singleton)-1);
- mid = (struct Pairs*)((char*)low + boffset);
+ mid = (struct Singleton*)((char*)low + boffset);
if (select_val < mid->val) {
high = mid;
} else if (select_val > mid->val) {
low = mid + 1;
} else {
- $NEXT(mid->addr);
+ Sint32* jump_tab = (Sint32 *) ($NEXT_INSTRUCTION + $NumElements);
+ Sint32 offset = jump_tab[mid - (struct Singleton *)($NEXT_INSTRUCTION)];
+ $JUMP(offset);
}
}
- $NEXT($Fail);
+ $JUMP($Fail);
}
-i_select_tuple_arity2 := select_val2.src.ta_fail.execute;
-i_select_val2 := select_val2.src.fail.execute;
+i_select_tuple_arity2 := select_val2.src.get_arity.execute;
+i_select_val2 := select_val2.src.execute;
select_val2.head() {
Eterm select_val2;
- BeamInstr* select_fail;
}
select_val2.src(Src) {
select_val2 = $Src;
}
-select_val2.ta_fail(Fail) {
- select_fail = &$Fail;
- if (is_not_tuple(select_val2)) {
- $FAIL(*select_fail);
+select_val2.get_arity() {
+ if (ERTS_LIKELY(is_tuple(select_val2))) {
+ select_val2 = *tuple_val(select_val2);
+ } else {
+ select_val2 = NIL;
}
- select_val2 = *tuple_val(select_val2);
}
-select_val2.fail(Fail) {
- select_fail = &$Fail;
-}
+select_val2.execute(Fail, T1, T2) {
+ Sint32* jump_tab = (Sint32 *) ($NEXT_INSTRUCTION);
-select_val2.execute(T1, T2, D1, D2) {
if (select_val2 == $T1) {
- $JUMP($D1);
+ $JUMP(jump_tab[0]);
} else if (select_val2 == $T2) {
- $JUMP($D2);
+ $JUMP(jump_tab[1]);
} else {
- $FAIL(*select_fail);
+ $FAIL($Fail);
}
}
-i_select_tuple_arity := select_val_lin.fetch.ta_fail.execute;
-i_select_val_lins := select_val_lin.fetch.fail.execute;
+i_select_tuple_arity := select_val_lin.fetch.get_arity.execute;
+i_select_val_lins := select_val_lin.fetch.execute;
select_val_lin.head() {
Eterm select_val;
- BeamInstr* select_fail;
}
select_val_lin.fetch(Src) {
select_val = $Src;
}
-select_val_lin.ta_fail(Fail) {
- select_fail = &$Fail;
- if (is_tuple(select_val)) {
+select_val_lin.get_arity() {
+ if (ERTS_LIKELY(is_tuple(select_val))) {
select_val = *tuple_val(select_val);
} else {
- $JUMP(*select_fail);
+ select_val = NIL;
}
}
-select_val_lin.fail(Fail) {
- select_fail = &$Fail;
-}
-
-select_val_lin.execute(N) {
+select_val_lin.execute(Fail, N) {
BeamInstr* vs = $NEXT_INSTRUCTION;
int ix = 0;
@@ -150,10 +142,11 @@ select_val_lin.execute(N) {
}
if (vs[ix] == select_val) {
- I = $NEXT_INSTRUCTION + $N + ix;
- $JUMP(*I);
+ Sint32* jump_tab = (Sint32 *) ($NEXT_INSTRUCTION + $N);
+ Eterm offset = jump_tab[ix];
+ $JUMP(offset);
} else {
- $JUMP(*select_fail);
+ $JUMP($Fail);
}
}
@@ -161,7 +154,8 @@ JUMP_ON_VAL(Fail, Index, N, Base) {
if (is_small($Index)) {
$Index = (Uint) (signed_val($Index) - $Base);
if ($Index < $N) {
- $JUMP((($NEXT_INSTRUCTION)[$Index]));
+ Sint32* jump_tab = (Sint32 *) ($NEXT_INSTRUCTION);
+ $JUMP(jump_tab[$Index]);
}
}
$FAIL($Fail);
diff --git a/erts/emulator/beam/trace_instrs.tab b/erts/emulator/beam/trace_instrs.tab
index c71f2ef003..b10442c5e7 100644
--- a/erts/emulator/beam/trace_instrs.tab
+++ b/erts/emulator/beam/trace_instrs.tab
@@ -94,7 +94,7 @@ i_yield() {
c_p->arg_reg[0] = am_true;
c_p->arity = 1; /* One living register (the 'true' return value) */
SWAPOUT;
- c_p->i = $NEXT_INSTRUCTION;
+ $SET_CP_I_ABS($NEXT_INSTRUCTION);
c_p->current = NULL;
goto do_schedule;
//| -no_next
@@ -153,3 +153,16 @@ i_debug_breakpoint() {
goto handle_error;
//| -no_next
}
+
+
+
+//
+// Special jump instruction used for tracing. Takes an absolute
+// failure address.
+//
+
+trace_jump(Fail) {
+ //| -no_next
+ SET_I((BeamInstr *) $Fail);
+ Goto(*I);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 23:53:38 +0000