2 * lttng-filter-specialize.c
4 * LTTng UST filter code specializer.
6 * Copyright (C) 2010-2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 #include "lttng-filter.h"
32 #include <lttng/align.h>
33 #include "ust-events-internal.h"
35 static int lttng_fls(int val
)
38 unsigned int x
= (unsigned int) val
;
42 if (!(x
& 0xFFFF0000U
)) {
46 if (!(x
& 0xFF000000U
)) {
50 if (!(x
& 0xF0000000U
)) {
54 if (!(x
& 0xC0000000U
)) {
58 if (!(x
& 0x80000000U
)) {
64 static int get_count_order(unsigned int count
)
68 order
= lttng_fls(count
) - 1;
69 if (count
& (count
- 1))
74 static ssize_t
bytecode_reserve_data(struct bytecode_runtime
*runtime
,
75 size_t align
, size_t len
)
78 size_t padding
= lttng_ust_offset_align(runtime
->data_len
, align
);
79 size_t new_len
= runtime
->data_len
+ padding
+ len
;
80 size_t new_alloc_len
= new_len
;
81 size_t old_alloc_len
= runtime
->data_alloc_len
;
83 if (new_len
> FILTER_MAX_DATA_LEN
)
86 if (new_alloc_len
> old_alloc_len
) {
90 max_t(size_t, 1U << get_count_order(new_alloc_len
), old_alloc_len
<< 1);
91 newptr
= realloc(runtime
->data
, new_alloc_len
);
94 runtime
->data
= newptr
;
95 /* We zero directly the memory from start of allocation. */
96 memset(&runtime
->data
[old_alloc_len
], 0, new_alloc_len
- old_alloc_len
);
97 runtime
->data_alloc_len
= new_alloc_len
;
99 runtime
->data_len
+= padding
;
100 ret
= runtime
->data_len
;
101 runtime
->data_len
+= len
;
105 static ssize_t
bytecode_push_data(struct bytecode_runtime
*runtime
,
106 const void *p
, size_t align
, size_t len
)
110 offset
= bytecode_reserve_data(runtime
, align
, len
);
113 memcpy(&runtime
->data
[offset
], p
, len
);
117 static int specialize_load_field(struct vstack_entry
*stack_top
,
118 struct load_op
*insn
)
122 switch (stack_top
->load
.type
) {
125 case LOAD_ROOT_CONTEXT
:
126 case LOAD_ROOT_APP_CONTEXT
:
127 case LOAD_ROOT_PAYLOAD
:
129 dbg_printf("Filter warning: cannot load root, missing field name.\n");
133 switch (stack_top
->load
.object_type
) {
135 dbg_printf("op load field s8\n");
136 stack_top
->type
= REG_S64
;
137 if (!stack_top
->load
.rev_bo
)
138 insn
->op
= FILTER_OP_LOAD_FIELD_S8
;
140 case OBJECT_TYPE_S16
:
141 dbg_printf("op load field s16\n");
142 stack_top
->type
= REG_S64
;
143 if (!stack_top
->load
.rev_bo
)
144 insn
->op
= FILTER_OP_LOAD_FIELD_S16
;
146 case OBJECT_TYPE_S32
:
147 dbg_printf("op load field s32\n");
148 stack_top
->type
= REG_S64
;
149 if (!stack_top
->load
.rev_bo
)
150 insn
->op
= FILTER_OP_LOAD_FIELD_S32
;
152 case OBJECT_TYPE_S64
:
153 dbg_printf("op load field s64\n");
154 stack_top
->type
= REG_S64
;
155 if (!stack_top
->load
.rev_bo
)
156 insn
->op
= FILTER_OP_LOAD_FIELD_S64
;
159 dbg_printf("op load field u8\n");
160 stack_top
->type
= REG_U64
;
161 insn
->op
= FILTER_OP_LOAD_FIELD_U8
;
163 case OBJECT_TYPE_U16
:
164 dbg_printf("op load field u16\n");
165 stack_top
->type
= REG_U64
;
166 if (!stack_top
->load
.rev_bo
)
167 insn
->op
= FILTER_OP_LOAD_FIELD_U16
;
169 case OBJECT_TYPE_U32
:
170 dbg_printf("op load field u32\n");
171 stack_top
->type
= REG_U64
;
172 if (!stack_top
->load
.rev_bo
)
173 insn
->op
= FILTER_OP_LOAD_FIELD_U32
;
175 case OBJECT_TYPE_U64
:
176 dbg_printf("op load field u64\n");
177 stack_top
->type
= REG_U64
;
178 if (!stack_top
->load
.rev_bo
)
179 insn
->op
= FILTER_OP_LOAD_FIELD_U64
;
181 case OBJECT_TYPE_DOUBLE
:
182 stack_top
->type
= REG_DOUBLE
;
183 insn
->op
= FILTER_OP_LOAD_FIELD_DOUBLE
;
185 case OBJECT_TYPE_STRING
:
186 dbg_printf("op load field string\n");
187 stack_top
->type
= REG_STRING
;
188 insn
->op
= FILTER_OP_LOAD_FIELD_STRING
;
190 case OBJECT_TYPE_STRING_SEQUENCE
:
191 dbg_printf("op load field string sequence\n");
192 stack_top
->type
= REG_STRING
;
193 insn
->op
= FILTER_OP_LOAD_FIELD_SEQUENCE
;
195 case OBJECT_TYPE_DYNAMIC
:
196 dbg_printf("op load field dynamic\n");
197 stack_top
->type
= REG_UNKNOWN
;
198 /* Don't specialize load op. */
200 case OBJECT_TYPE_SEQUENCE
:
201 case OBJECT_TYPE_ARRAY
:
202 case OBJECT_TYPE_STRUCT
:
203 case OBJECT_TYPE_VARIANT
:
204 ERR("Sequences, arrays, struct and variant cannot be loaded (nested types).");
214 static int specialize_get_index_object_type(enum object_type
*otype
,
215 int signedness
, uint32_t elem_len
)
220 *otype
= OBJECT_TYPE_S8
;
222 *otype
= OBJECT_TYPE_U8
;
226 *otype
= OBJECT_TYPE_S16
;
228 *otype
= OBJECT_TYPE_U16
;
232 *otype
= OBJECT_TYPE_S32
;
234 *otype
= OBJECT_TYPE_U32
;
238 *otype
= OBJECT_TYPE_S64
;
240 *otype
= OBJECT_TYPE_U64
;
248 static int specialize_get_index(struct bytecode_runtime
*runtime
,
249 struct load_op
*insn
, uint64_t index
,
250 struct vstack_entry
*stack_top
,
254 struct filter_get_index_data gid
;
257 memset(&gid
, 0, sizeof(gid
));
258 switch (stack_top
->load
.type
) {
260 switch (stack_top
->load
.object_type
) {
261 case OBJECT_TYPE_ARRAY
:
263 const struct lttng_integer_type
*integer_type
;
264 const struct lttng_event_field
*field
;
265 uint32_t elem_len
, num_elems
;
268 field
= stack_top
->load
.field
;
269 switch (field
->type
.atype
) {
271 integer_type
= &field
->type
.u
.legacy
.array
.elem_type
.u
.basic
.integer
;
272 num_elems
= field
->type
.u
.legacy
.array
.length
;
274 case atype_array_nestable
:
275 if (field
->type
.u
.array_nestable
.elem_type
->atype
!= atype_integer
) {
279 integer_type
= &field
->type
.u
.array_nestable
.elem_type
->u
.integer
;
280 num_elems
= field
->type
.u
.array_nestable
.length
;
286 elem_len
= integer_type
->size
;
287 signedness
= integer_type
->signedness
;
288 if (index
>= num_elems
) {
292 ret
= specialize_get_index_object_type(&stack_top
->load
.object_type
,
293 signedness
, elem_len
);
296 gid
.offset
= index
* (elem_len
/ CHAR_BIT
);
297 gid
.array_len
= num_elems
* (elem_len
/ CHAR_BIT
);
298 gid
.elem
.type
= stack_top
->load
.object_type
;
299 gid
.elem
.len
= elem_len
;
300 if (integer_type
->reverse_byte_order
)
301 gid
.elem
.rev_bo
= true;
302 stack_top
->load
.rev_bo
= gid
.elem
.rev_bo
;
305 case OBJECT_TYPE_SEQUENCE
:
307 const struct lttng_integer_type
*integer_type
;
308 const struct lttng_event_field
*field
;
312 field
= stack_top
->load
.field
;
313 switch (field
->type
.atype
) {
315 integer_type
= &field
->type
.u
.legacy
.sequence
.elem_type
.u
.basic
.integer
;
317 case atype_sequence_nestable
:
318 if (field
->type
.u
.sequence_nestable
.elem_type
->atype
!= atype_integer
) {
322 integer_type
= &field
->type
.u
.sequence_nestable
.elem_type
->u
.integer
;
328 elem_len
= integer_type
->size
;
329 signedness
= integer_type
->signedness
;
330 ret
= specialize_get_index_object_type(&stack_top
->load
.object_type
,
331 signedness
, elem_len
);
334 gid
.offset
= index
* (elem_len
/ CHAR_BIT
);
335 gid
.elem
.type
= stack_top
->load
.object_type
;
336 gid
.elem
.len
= elem_len
;
337 if (integer_type
->reverse_byte_order
)
338 gid
.elem
.rev_bo
= true;
339 stack_top
->load
.rev_bo
= gid
.elem
.rev_bo
;
342 case OBJECT_TYPE_STRUCT
:
343 /* Only generated by the specialize phase. */
344 case OBJECT_TYPE_VARIANT
: /* Fall-through */
346 ERR("Unexpected get index type %d",
347 (int) stack_top
->load
.object_type
);
352 case LOAD_ROOT_CONTEXT
:
353 case LOAD_ROOT_APP_CONTEXT
:
354 case LOAD_ROOT_PAYLOAD
:
355 ERR("Index lookup for root field not implemented yet.");
359 data_offset
= bytecode_push_data(runtime
, &gid
,
360 __alignof__(gid
), sizeof(gid
));
361 if (data_offset
< 0) {
367 ((struct get_index_u16
*) insn
->data
)->index
= data_offset
;
370 ((struct get_index_u64
*) insn
->data
)->index
= data_offset
;
383 static int specialize_context_lookup_name(struct lttng_ctx
*ctx
,
384 struct bytecode_runtime
*bytecode
,
385 struct load_op
*insn
)
390 offset
= ((struct get_symbol
*) insn
->data
)->offset
;
391 name
= bytecode
->p
.bc
->bc
.data
+ bytecode
->p
.bc
->bc
.reloc_offset
+ offset
;
392 return lttng_get_context_index(ctx
, name
);
395 static int specialize_load_object(const struct lttng_event_field
*field
,
396 struct vstack_load
*load
, bool is_context
)
398 load
->type
= LOAD_OBJECT
;
400 switch (field
->type
.atype
) {
402 if (field
->type
.u
.integer
.signedness
)
403 load
->object_type
= OBJECT_TYPE_S64
;
405 load
->object_type
= OBJECT_TYPE_U64
;
406 load
->rev_bo
= false;
409 case atype_enum_nestable
:
411 const struct lttng_integer_type
*itype
;
413 if (field
->type
.atype
== atype_enum
) {
414 itype
= &field
->type
.u
.legacy
.basic
.enumeration
.container_type
;
416 itype
= &field
->type
.u
.enum_nestable
.container_type
->u
.integer
;
418 if (itype
->signedness
)
419 load
->object_type
= OBJECT_TYPE_S64
;
421 load
->object_type
= OBJECT_TYPE_U64
;
422 load
->rev_bo
= false;
426 if (field
->type
.u
.legacy
.array
.elem_type
.atype
!= atype_integer
) {
427 ERR("Array nesting only supports integer types.");
431 load
->object_type
= OBJECT_TYPE_STRING
;
433 if (field
->type
.u
.legacy
.array
.elem_type
.u
.basic
.integer
.encoding
== lttng_encode_none
) {
434 load
->object_type
= OBJECT_TYPE_ARRAY
;
437 load
->object_type
= OBJECT_TYPE_STRING_SEQUENCE
;
441 case atype_array_nestable
:
442 if (field
->type
.u
.array_nestable
.elem_type
->atype
!= atype_integer
) {
443 ERR("Array nesting only supports integer types.");
447 load
->object_type
= OBJECT_TYPE_STRING
;
449 if (field
->type
.u
.array_nestable
.elem_type
->u
.integer
.encoding
== lttng_encode_none
) {
450 load
->object_type
= OBJECT_TYPE_ARRAY
;
453 load
->object_type
= OBJECT_TYPE_STRING_SEQUENCE
;
458 if (field
->type
.u
.legacy
.sequence
.elem_type
.atype
!= atype_integer
) {
459 ERR("Sequence nesting only supports integer types.");
463 load
->object_type
= OBJECT_TYPE_STRING
;
465 if (field
->type
.u
.legacy
.sequence
.elem_type
.u
.basic
.integer
.encoding
== lttng_encode_none
) {
466 load
->object_type
= OBJECT_TYPE_SEQUENCE
;
469 load
->object_type
= OBJECT_TYPE_STRING_SEQUENCE
;
473 case atype_sequence_nestable
:
474 if (field
->type
.u
.sequence_nestable
.elem_type
->atype
!= atype_integer
) {
475 ERR("Sequence nesting only supports integer types.");
479 load
->object_type
= OBJECT_TYPE_STRING
;
481 if (field
->type
.u
.sequence_nestable
.elem_type
->u
.integer
.encoding
== lttng_encode_none
) {
482 load
->object_type
= OBJECT_TYPE_SEQUENCE
;
485 load
->object_type
= OBJECT_TYPE_STRING_SEQUENCE
;
491 load
->object_type
= OBJECT_TYPE_STRING
;
494 load
->object_type
= OBJECT_TYPE_DOUBLE
;
497 load
->object_type
= OBJECT_TYPE_DYNAMIC
;
500 ERR("Structure type cannot be loaded.");
503 ERR("Unknown type: %d", (int) field
->type
.atype
);
509 static int specialize_context_lookup(struct lttng_ctx
*ctx
,
510 struct bytecode_runtime
*runtime
,
511 struct load_op
*insn
,
512 struct vstack_load
*load
)
515 struct lttng_ctx_field
*ctx_field
;
516 struct lttng_event_field
*field
;
517 struct filter_get_index_data gid
;
520 idx
= specialize_context_lookup_name(ctx
, runtime
, insn
);
524 ctx_field
= &ctx
->fields
[idx
];
525 field
= &ctx_field
->event_field
;
526 ret
= specialize_load_object(field
, load
, true);
529 /* Specialize each get_symbol into a get_index. */
530 insn
->op
= FILTER_OP_GET_INDEX_U16
;
531 memset(&gid
, 0, sizeof(gid
));
533 gid
.elem
.type
= load
->object_type
;
534 data_offset
= bytecode_push_data(runtime
, &gid
,
535 __alignof__(gid
), sizeof(gid
));
536 if (data_offset
< 0) {
539 ((struct get_index_u16
*) insn
->data
)->index
= data_offset
;
543 static int specialize_app_context_lookup(struct lttng_ctx
**pctx
,
544 struct bytecode_runtime
*runtime
,
545 struct load_op
*insn
,
546 struct vstack_load
*load
)
549 const char *orig_name
;
552 struct lttng_ctx_field
*ctx_field
;
553 struct lttng_event_field
*field
;
554 struct filter_get_index_data gid
;
557 offset
= ((struct get_symbol
*) insn
->data
)->offset
;
558 orig_name
= runtime
->p
.bc
->bc
.data
+ runtime
->p
.bc
->bc
.reloc_offset
+ offset
;
559 name
= zmalloc(strlen(orig_name
) + strlen("$app.") + 1);
564 strcpy(name
, "$app.");
565 strcat(name
, orig_name
);
566 idx
= lttng_get_context_index(*pctx
, name
);
568 assert(lttng_context_is_app(name
));
569 ret
= lttng_ust_add_app_context_to_ctx_rcu(name
,
573 idx
= lttng_get_context_index(*pctx
, name
);
577 ctx_field
= &(*pctx
)->fields
[idx
];
578 field
= &ctx_field
->event_field
;
579 ret
= specialize_load_object(field
, load
, true);
582 /* Specialize each get_symbol into a get_index. */
583 insn
->op
= FILTER_OP_GET_INDEX_U16
;
584 memset(&gid
, 0, sizeof(gid
));
586 gid
.elem
.type
= load
->object_type
;
587 data_offset
= bytecode_push_data(runtime
, &gid
,
588 __alignof__(gid
), sizeof(gid
));
589 if (data_offset
< 0) {
593 ((struct get_index_u16
*) insn
->data
)->index
= data_offset
;
600 static int specialize_payload_lookup(const struct lttng_event_desc
*event_desc
,
601 struct bytecode_runtime
*runtime
,
602 struct load_op
*insn
,
603 struct vstack_load
*load
)
607 unsigned int i
, nr_fields
;
609 uint32_t field_offset
= 0;
610 const struct lttng_event_field
*field
;
612 struct filter_get_index_data gid
;
615 nr_fields
= event_desc
->nr_fields
;
616 offset
= ((struct get_symbol
*) insn
->data
)->offset
;
617 name
= runtime
->p
.bc
->bc
.data
+ runtime
->p
.bc
->bc
.reloc_offset
+ offset
;
618 for (i
= 0; i
< nr_fields
; i
++) {
619 field
= &event_desc
->fields
[i
];
620 if (field
->u
.ext
.nofilter
) {
623 if (!strcmp(field
->name
, name
)) {
627 /* compute field offset on stack */
628 switch (field
->type
.atype
) {
631 case atype_enum_nestable
:
632 field_offset
+= sizeof(int64_t);
635 case atype_array_nestable
:
637 case atype_sequence_nestable
:
638 field_offset
+= sizeof(unsigned long);
639 field_offset
+= sizeof(void *);
642 field_offset
+= sizeof(void *);
645 field_offset
+= sizeof(double);
657 ret
= specialize_load_object(field
, load
, false);
661 /* Specialize each get_symbol into a get_index. */
662 insn
->op
= FILTER_OP_GET_INDEX_U16
;
663 memset(&gid
, 0, sizeof(gid
));
664 gid
.offset
= field_offset
;
665 gid
.elem
.type
= load
->object_type
;
666 data_offset
= bytecode_push_data(runtime
, &gid
,
667 __alignof__(gid
), sizeof(gid
));
668 if (data_offset
< 0) {
672 ((struct get_index_u16
*) insn
->data
)->index
= data_offset
;
678 int lttng_filter_specialize_bytecode(const struct lttng_event_desc
*event_desc
,
679 struct bytecode_runtime
*bytecode
)
681 void *pc
, *next_pc
, *start_pc
;
683 struct vstack _stack
;
684 struct vstack
*stack
= &_stack
;
685 struct lttng_ctx
**pctx
= bytecode
->p
.pctx
;
689 start_pc
= &bytecode
->code
[0];
690 for (pc
= next_pc
= start_pc
; pc
- start_pc
< bytecode
->len
;
692 switch (*(filter_opcode_t
*) pc
) {
693 case FILTER_OP_UNKNOWN
:
695 ERR("unknown bytecode op %u\n",
696 (unsigned int) *(filter_opcode_t
*) pc
);
700 case FILTER_OP_RETURN
:
701 if (vstack_ax(stack
)->type
== REG_S64
||
702 vstack_ax(stack
)->type
== REG_U64
)
703 *(filter_opcode_t
*) pc
= FILTER_OP_RETURN_S64
;
707 case FILTER_OP_RETURN_S64
:
708 if (vstack_ax(stack
)->type
!= REG_S64
&&
709 vstack_ax(stack
)->type
!= REG_U64
) {
710 ERR("Unexpected register type\n");
722 case FILTER_OP_MINUS
:
723 ERR("unsupported bytecode op %u\n",
724 (unsigned int) *(filter_opcode_t
*) pc
);
730 struct binary_op
*insn
= (struct binary_op
*) pc
;
732 switch(vstack_ax(stack
)->type
) {
734 ERR("unknown register type\n");
739 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
741 if (vstack_bx(stack
)->type
== REG_STAR_GLOB_STRING
)
742 insn
->op
= FILTER_OP_EQ_STAR_GLOB_STRING
;
744 insn
->op
= FILTER_OP_EQ_STRING
;
746 case REG_STAR_GLOB_STRING
:
747 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
749 insn
->op
= FILTER_OP_EQ_STAR_GLOB_STRING
;
753 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
755 if (vstack_bx(stack
)->type
== REG_S64
||
756 vstack_bx(stack
)->type
== REG_U64
)
757 insn
->op
= FILTER_OP_EQ_S64
;
759 insn
->op
= FILTER_OP_EQ_DOUBLE_S64
;
762 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
764 if (vstack_bx(stack
)->type
== REG_S64
||
765 vstack_bx(stack
)->type
== REG_U64
)
766 insn
->op
= FILTER_OP_EQ_S64_DOUBLE
;
768 insn
->op
= FILTER_OP_EQ_DOUBLE
;
771 break; /* Dynamic typing. */
774 if (vstack_pop(stack
)) {
778 vstack_ax(stack
)->type
= REG_S64
;
779 next_pc
+= sizeof(struct binary_op
);
785 struct binary_op
*insn
= (struct binary_op
*) pc
;
787 switch(vstack_ax(stack
)->type
) {
789 ERR("unknown register type\n");
794 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
796 if (vstack_bx(stack
)->type
== REG_STAR_GLOB_STRING
)
797 insn
->op
= FILTER_OP_NE_STAR_GLOB_STRING
;
799 insn
->op
= FILTER_OP_NE_STRING
;
801 case REG_STAR_GLOB_STRING
:
802 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
804 insn
->op
= FILTER_OP_NE_STAR_GLOB_STRING
;
808 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
810 if (vstack_bx(stack
)->type
== REG_S64
||
811 vstack_bx(stack
)->type
== REG_U64
)
812 insn
->op
= FILTER_OP_NE_S64
;
814 insn
->op
= FILTER_OP_NE_DOUBLE_S64
;
817 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
819 if (vstack_bx(stack
)->type
== REG_S64
||
820 vstack_bx(stack
)->type
== REG_U64
)
821 insn
->op
= FILTER_OP_NE_S64_DOUBLE
;
823 insn
->op
= FILTER_OP_NE_DOUBLE
;
826 break; /* Dynamic typing. */
829 if (vstack_pop(stack
)) {
833 vstack_ax(stack
)->type
= REG_S64
;
834 next_pc
+= sizeof(struct binary_op
);
840 struct binary_op
*insn
= (struct binary_op
*) pc
;
842 switch(vstack_ax(stack
)->type
) {
844 ERR("unknown register type\n");
848 case REG_STAR_GLOB_STRING
:
849 ERR("invalid register type for > binary operator\n");
853 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
855 insn
->op
= FILTER_OP_GT_STRING
;
859 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
861 if (vstack_bx(stack
)->type
== REG_S64
||
862 vstack_bx(stack
)->type
== REG_U64
)
863 insn
->op
= FILTER_OP_GT_S64
;
865 insn
->op
= FILTER_OP_GT_DOUBLE_S64
;
868 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
870 if (vstack_bx(stack
)->type
== REG_S64
||
871 vstack_bx(stack
)->type
== REG_U64
)
872 insn
->op
= FILTER_OP_GT_S64_DOUBLE
;
874 insn
->op
= FILTER_OP_GT_DOUBLE
;
877 break; /* Dynamic typing. */
880 if (vstack_pop(stack
)) {
884 vstack_ax(stack
)->type
= REG_S64
;
885 next_pc
+= sizeof(struct binary_op
);
891 struct binary_op
*insn
= (struct binary_op
*) pc
;
893 switch(vstack_ax(stack
)->type
) {
895 ERR("unknown register type\n");
899 case REG_STAR_GLOB_STRING
:
900 ERR("invalid register type for < binary operator\n");
904 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
906 insn
->op
= FILTER_OP_LT_STRING
;
910 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
912 if (vstack_bx(stack
)->type
== REG_S64
||
913 vstack_bx(stack
)->type
== REG_U64
)
914 insn
->op
= FILTER_OP_LT_S64
;
916 insn
->op
= FILTER_OP_LT_DOUBLE_S64
;
919 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
921 if (vstack_bx(stack
)->type
== REG_S64
||
922 vstack_bx(stack
)->type
== REG_U64
)
923 insn
->op
= FILTER_OP_LT_S64_DOUBLE
;
925 insn
->op
= FILTER_OP_LT_DOUBLE
;
928 break; /* Dynamic typing. */
931 if (vstack_pop(stack
)) {
935 vstack_ax(stack
)->type
= REG_S64
;
936 next_pc
+= sizeof(struct binary_op
);
942 struct binary_op
*insn
= (struct binary_op
*) pc
;
944 switch(vstack_ax(stack
)->type
) {
946 ERR("unknown register type\n");
950 case REG_STAR_GLOB_STRING
:
951 ERR("invalid register type for >= binary operator\n");
955 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
957 insn
->op
= FILTER_OP_GE_STRING
;
961 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
963 if (vstack_bx(stack
)->type
== REG_S64
||
964 vstack_bx(stack
)->type
== REG_U64
)
965 insn
->op
= FILTER_OP_GE_S64
;
967 insn
->op
= FILTER_OP_GE_DOUBLE_S64
;
970 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
972 if (vstack_bx(stack
)->type
== REG_S64
||
973 vstack_bx(stack
)->type
== REG_U64
)
974 insn
->op
= FILTER_OP_GE_S64_DOUBLE
;
976 insn
->op
= FILTER_OP_GE_DOUBLE
;
979 break; /* Dynamic typing. */
982 if (vstack_pop(stack
)) {
986 vstack_ax(stack
)->type
= REG_U64
;
987 next_pc
+= sizeof(struct binary_op
);
992 struct binary_op
*insn
= (struct binary_op
*) pc
;
994 switch(vstack_ax(stack
)->type
) {
996 ERR("unknown register type\n");
1000 case REG_STAR_GLOB_STRING
:
1001 ERR("invalid register type for <= binary operator\n");
1005 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
1007 insn
->op
= FILTER_OP_LE_STRING
;
1011 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
1013 if (vstack_bx(stack
)->type
== REG_S64
||
1014 vstack_bx(stack
)->type
== REG_U64
)
1015 insn
->op
= FILTER_OP_LE_S64
;
1017 insn
->op
= FILTER_OP_LE_DOUBLE_S64
;
1020 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
1022 if (vstack_bx(stack
)->type
== REG_S64
||
1023 vstack_bx(stack
)->type
== REG_U64
)
1024 insn
->op
= FILTER_OP_LE_S64_DOUBLE
;
1026 insn
->op
= FILTER_OP_LE_DOUBLE
;
1029 break; /* Dynamic typing. */
1031 vstack_ax(stack
)->type
= REG_S64
;
1032 next_pc
+= sizeof(struct binary_op
);
1036 case FILTER_OP_EQ_STRING
:
1037 case FILTER_OP_NE_STRING
:
1038 case FILTER_OP_GT_STRING
:
1039 case FILTER_OP_LT_STRING
:
1040 case FILTER_OP_GE_STRING
:
1041 case FILTER_OP_LE_STRING
:
1042 case FILTER_OP_EQ_STAR_GLOB_STRING
:
1043 case FILTER_OP_NE_STAR_GLOB_STRING
:
1044 case FILTER_OP_EQ_S64
:
1045 case FILTER_OP_NE_S64
:
1046 case FILTER_OP_GT_S64
:
1047 case FILTER_OP_LT_S64
:
1048 case FILTER_OP_GE_S64
:
1049 case FILTER_OP_LE_S64
:
1050 case FILTER_OP_EQ_DOUBLE
:
1051 case FILTER_OP_NE_DOUBLE
:
1052 case FILTER_OP_GT_DOUBLE
:
1053 case FILTER_OP_LT_DOUBLE
:
1054 case FILTER_OP_GE_DOUBLE
:
1055 case FILTER_OP_LE_DOUBLE
:
1056 case FILTER_OP_EQ_DOUBLE_S64
:
1057 case FILTER_OP_NE_DOUBLE_S64
:
1058 case FILTER_OP_GT_DOUBLE_S64
:
1059 case FILTER_OP_LT_DOUBLE_S64
:
1060 case FILTER_OP_GE_DOUBLE_S64
:
1061 case FILTER_OP_LE_DOUBLE_S64
:
1062 case FILTER_OP_EQ_S64_DOUBLE
:
1063 case FILTER_OP_NE_S64_DOUBLE
:
1064 case FILTER_OP_GT_S64_DOUBLE
:
1065 case FILTER_OP_LT_S64_DOUBLE
:
1066 case FILTER_OP_GE_S64_DOUBLE
:
1067 case FILTER_OP_LE_S64_DOUBLE
:
1070 if (vstack_pop(stack
)) {
1074 vstack_ax(stack
)->type
= REG_S64
;
1075 next_pc
+= sizeof(struct binary_op
);
1079 case FILTER_OP_BIT_RSHIFT
:
1080 case FILTER_OP_BIT_LSHIFT
:
1081 case FILTER_OP_BIT_AND
:
1082 case FILTER_OP_BIT_OR
:
1083 case FILTER_OP_BIT_XOR
:
1086 if (vstack_pop(stack
)) {
1090 vstack_ax(stack
)->type
= REG_S64
;
1091 next_pc
+= sizeof(struct binary_op
);
1096 case FILTER_OP_UNARY_PLUS
:
1098 struct unary_op
*insn
= (struct unary_op
*) pc
;
1100 switch(vstack_ax(stack
)->type
) {
1102 ERR("unknown register type\n");
1108 insn
->op
= FILTER_OP_UNARY_PLUS_S64
;
1111 insn
->op
= FILTER_OP_UNARY_PLUS_DOUBLE
;
1113 case REG_UNKNOWN
: /* Dynamic typing. */
1117 next_pc
+= sizeof(struct unary_op
);
1121 case FILTER_OP_UNARY_MINUS
:
1123 struct unary_op
*insn
= (struct unary_op
*) pc
;
1125 switch(vstack_ax(stack
)->type
) {
1127 ERR("unknown register type\n");
1133 insn
->op
= FILTER_OP_UNARY_MINUS_S64
;
1136 insn
->op
= FILTER_OP_UNARY_MINUS_DOUBLE
;
1138 case REG_UNKNOWN
: /* Dynamic typing. */
1142 next_pc
+= sizeof(struct unary_op
);
1146 case FILTER_OP_UNARY_NOT
:
1148 struct unary_op
*insn
= (struct unary_op
*) pc
;
1150 switch(vstack_ax(stack
)->type
) {
1152 ERR("unknown register type\n");
1158 insn
->op
= FILTER_OP_UNARY_NOT_S64
;
1161 insn
->op
= FILTER_OP_UNARY_NOT_DOUBLE
;
1163 case REG_UNKNOWN
: /* Dynamic typing. */
1167 next_pc
+= sizeof(struct unary_op
);
1171 case FILTER_OP_UNARY_BIT_NOT
:
1174 next_pc
+= sizeof(struct unary_op
);
1178 case FILTER_OP_UNARY_PLUS_S64
:
1179 case FILTER_OP_UNARY_MINUS_S64
:
1180 case FILTER_OP_UNARY_NOT_S64
:
1181 case FILTER_OP_UNARY_PLUS_DOUBLE
:
1182 case FILTER_OP_UNARY_MINUS_DOUBLE
:
1183 case FILTER_OP_UNARY_NOT_DOUBLE
:
1186 next_pc
+= sizeof(struct unary_op
);
1194 /* Continue to next instruction */
1195 /* Pop 1 when jump not taken */
1196 if (vstack_pop(stack
)) {
1200 next_pc
+= sizeof(struct logical_op
);
1204 /* load field ref */
1205 case FILTER_OP_LOAD_FIELD_REF
:
1207 ERR("Unknown field ref type\n");
1211 /* get context ref */
1212 case FILTER_OP_GET_CONTEXT_REF
:
1214 if (vstack_push(stack
)) {
1218 vstack_ax(stack
)->type
= REG_UNKNOWN
;
1219 next_pc
+= sizeof(struct load_op
) + sizeof(struct field_ref
);
1222 case FILTER_OP_LOAD_FIELD_REF_STRING
:
1223 case FILTER_OP_LOAD_FIELD_REF_SEQUENCE
:
1224 case FILTER_OP_GET_CONTEXT_REF_STRING
:
1226 if (vstack_push(stack
)) {
1230 vstack_ax(stack
)->type
= REG_STRING
;
1231 next_pc
+= sizeof(struct load_op
) + sizeof(struct field_ref
);
1234 case FILTER_OP_LOAD_FIELD_REF_S64
:
1235 case FILTER_OP_GET_CONTEXT_REF_S64
:
1237 if (vstack_push(stack
)) {
1241 vstack_ax(stack
)->type
= REG_S64
;
1242 next_pc
+= sizeof(struct load_op
) + sizeof(struct field_ref
);
1245 case FILTER_OP_LOAD_FIELD_REF_DOUBLE
:
1246 case FILTER_OP_GET_CONTEXT_REF_DOUBLE
:
1248 if (vstack_push(stack
)) {
1252 vstack_ax(stack
)->type
= REG_DOUBLE
;
1253 next_pc
+= sizeof(struct load_op
) + sizeof(struct field_ref
);
1257 /* load from immediate operand */
1258 case FILTER_OP_LOAD_STRING
:
1260 struct load_op
*insn
= (struct load_op
*) pc
;
1262 if (vstack_push(stack
)) {
1266 vstack_ax(stack
)->type
= REG_STRING
;
1267 next_pc
+= sizeof(struct load_op
) + strlen(insn
->data
) + 1;
1271 case FILTER_OP_LOAD_STAR_GLOB_STRING
:
1273 struct load_op
*insn
= (struct load_op
*) pc
;
1275 if (vstack_push(stack
)) {
1279 vstack_ax(stack
)->type
= REG_STAR_GLOB_STRING
;
1280 next_pc
+= sizeof(struct load_op
) + strlen(insn
->data
) + 1;
1284 case FILTER_OP_LOAD_S64
:
1286 if (vstack_push(stack
)) {
1290 vstack_ax(stack
)->type
= REG_S64
;
1291 next_pc
+= sizeof(struct load_op
)
1292 + sizeof(struct literal_numeric
);
1296 case FILTER_OP_LOAD_DOUBLE
:
1298 if (vstack_push(stack
)) {
1302 vstack_ax(stack
)->type
= REG_DOUBLE
;
1303 next_pc
+= sizeof(struct load_op
)
1304 + sizeof(struct literal_double
);
1309 case FILTER_OP_CAST_TO_S64
:
1311 struct cast_op
*insn
= (struct cast_op
*) pc
;
1313 switch (vstack_ax(stack
)->type
) {
1315 ERR("unknown register type\n");
1320 case REG_STAR_GLOB_STRING
:
1321 ERR("Cast op can only be applied to numeric or floating point registers\n");
1325 insn
->op
= FILTER_OP_CAST_NOP
;
1328 insn
->op
= FILTER_OP_CAST_DOUBLE_TO_S64
;
1335 vstack_ax(stack
)->type
= REG_S64
;
1336 next_pc
+= sizeof(struct cast_op
);
1339 case FILTER_OP_CAST_DOUBLE_TO_S64
:
1342 vstack_ax(stack
)->type
= REG_S64
;
1343 next_pc
+= sizeof(struct cast_op
);
1346 case FILTER_OP_CAST_NOP
:
1348 next_pc
+= sizeof(struct cast_op
);
1353 * Instructions for recursive traversal through composed types.
1355 case FILTER_OP_GET_CONTEXT_ROOT
:
1357 if (vstack_push(stack
)) {
1361 vstack_ax(stack
)->type
= REG_PTR
;
1362 vstack_ax(stack
)->load
.type
= LOAD_ROOT_CONTEXT
;
1363 next_pc
+= sizeof(struct load_op
);
1366 case FILTER_OP_GET_APP_CONTEXT_ROOT
:
1368 if (vstack_push(stack
)) {
1372 vstack_ax(stack
)->type
= REG_PTR
;
1373 vstack_ax(stack
)->load
.type
= LOAD_ROOT_APP_CONTEXT
;
1374 next_pc
+= sizeof(struct load_op
);
1377 case FILTER_OP_GET_PAYLOAD_ROOT
:
1379 if (vstack_push(stack
)) {
1383 vstack_ax(stack
)->type
= REG_PTR
;
1384 vstack_ax(stack
)->load
.type
= LOAD_ROOT_PAYLOAD
;
1385 next_pc
+= sizeof(struct load_op
);
1389 case FILTER_OP_LOAD_FIELD
:
1391 struct load_op
*insn
= (struct load_op
*) pc
;
1393 assert(vstack_ax(stack
)->type
== REG_PTR
);
1395 ret
= specialize_load_field(vstack_ax(stack
), insn
);
1399 next_pc
+= sizeof(struct load_op
);
1403 case FILTER_OP_LOAD_FIELD_S8
:
1404 case FILTER_OP_LOAD_FIELD_S16
:
1405 case FILTER_OP_LOAD_FIELD_S32
:
1406 case FILTER_OP_LOAD_FIELD_S64
:
1409 vstack_ax(stack
)->type
= REG_S64
;
1410 next_pc
+= sizeof(struct load_op
);
1414 case FILTER_OP_LOAD_FIELD_U8
:
1415 case FILTER_OP_LOAD_FIELD_U16
:
1416 case FILTER_OP_LOAD_FIELD_U32
:
1417 case FILTER_OP_LOAD_FIELD_U64
:
1420 vstack_ax(stack
)->type
= REG_U64
;
1421 next_pc
+= sizeof(struct load_op
);
1425 case FILTER_OP_LOAD_FIELD_STRING
:
1426 case FILTER_OP_LOAD_FIELD_SEQUENCE
:
1429 vstack_ax(stack
)->type
= REG_STRING
;
1430 next_pc
+= sizeof(struct load_op
);
1434 case FILTER_OP_LOAD_FIELD_DOUBLE
:
1437 vstack_ax(stack
)->type
= REG_DOUBLE
;
1438 next_pc
+= sizeof(struct load_op
);
1442 case FILTER_OP_GET_SYMBOL
:
1444 struct load_op
*insn
= (struct load_op
*) pc
;
1446 dbg_printf("op get symbol\n");
1447 switch (vstack_ax(stack
)->load
.type
) {
1449 ERR("Nested fields not implemented yet.");
1452 case LOAD_ROOT_CONTEXT
:
1453 /* Lookup context field. */
1454 ret
= specialize_context_lookup(*pctx
,
1456 &vstack_ax(stack
)->load
);
1460 case LOAD_ROOT_APP_CONTEXT
:
1461 /* Lookup app context field. */
1462 ret
= specialize_app_context_lookup(pctx
,
1464 &vstack_ax(stack
)->load
);
1468 case LOAD_ROOT_PAYLOAD
:
1469 /* Lookup event payload field. */
1470 ret
= specialize_payload_lookup(event_desc
,
1472 &vstack_ax(stack
)->load
);
1477 next_pc
+= sizeof(struct load_op
) + sizeof(struct get_symbol
);
1481 case FILTER_OP_GET_SYMBOL_FIELD
:
1483 /* Always generated by specialize phase. */
1488 case FILTER_OP_GET_INDEX_U16
:
1490 struct load_op
*insn
= (struct load_op
*) pc
;
1491 struct get_index_u16
*index
= (struct get_index_u16
*) insn
->data
;
1493 dbg_printf("op get index u16\n");
1495 ret
= specialize_get_index(bytecode
, insn
, index
->index
,
1496 vstack_ax(stack
), sizeof(*index
));
1499 next_pc
+= sizeof(struct load_op
) + sizeof(struct get_index_u16
);
1503 case FILTER_OP_GET_INDEX_U64
:
1505 struct load_op
*insn
= (struct load_op
*) pc
;
1506 struct get_index_u64
*index
= (struct get_index_u64
*) insn
->data
;
1508 dbg_printf("op get index u64\n");
1510 ret
= specialize_get_index(bytecode
, insn
, index
->index
,
1511 vstack_ax(stack
), sizeof(*index
));
1514 next_pc
+= sizeof(struct load_op
) + sizeof(struct get_index_u64
);