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_S64
;
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_S64
;
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_S64
;
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_S64
;
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 * LTTng-UST layout all integer fields as s64 on the stack for the filter.
402 switch (field
->type
.atype
) {
404 if (field
->type
.u
.integer
.signedness
)
405 load
->object_type
= OBJECT_TYPE_S64
;
407 load
->object_type
= OBJECT_TYPE_U64
;
408 load
->rev_bo
= false;
411 case atype_enum_nestable
:
413 const struct lttng_integer_type
*itype
;
415 if (field
->type
.atype
== atype_enum
) {
416 itype
= &field
->type
.u
.legacy
.basic
.enumeration
.container_type
;
418 itype
= &field
->type
.u
.enum_nestable
.container_type
->u
.integer
;
420 if (itype
->signedness
)
421 load
->object_type
= OBJECT_TYPE_S64
;
423 load
->object_type
= OBJECT_TYPE_U64
;
424 load
->rev_bo
= false;
428 if (field
->type
.u
.legacy
.array
.elem_type
.atype
!= atype_integer
) {
429 ERR("Array nesting only supports integer types.");
433 load
->object_type
= OBJECT_TYPE_STRING
;
435 if (field
->type
.u
.legacy
.array
.elem_type
.u
.basic
.integer
.encoding
== lttng_encode_none
) {
436 load
->object_type
= OBJECT_TYPE_ARRAY
;
439 load
->object_type
= OBJECT_TYPE_STRING_SEQUENCE
;
443 case atype_array_nestable
:
444 if (field
->type
.u
.array_nestable
.elem_type
->atype
!= atype_integer
) {
445 ERR("Array nesting only supports integer types.");
449 load
->object_type
= OBJECT_TYPE_STRING
;
451 if (field
->type
.u
.array_nestable
.elem_type
->u
.integer
.encoding
== lttng_encode_none
) {
452 load
->object_type
= OBJECT_TYPE_ARRAY
;
455 load
->object_type
= OBJECT_TYPE_STRING_SEQUENCE
;
460 if (field
->type
.u
.legacy
.sequence
.elem_type
.atype
!= atype_integer
) {
461 ERR("Sequence nesting only supports integer types.");
465 load
->object_type
= OBJECT_TYPE_STRING
;
467 if (field
->type
.u
.legacy
.sequence
.elem_type
.u
.basic
.integer
.encoding
== lttng_encode_none
) {
468 load
->object_type
= OBJECT_TYPE_SEQUENCE
;
471 load
->object_type
= OBJECT_TYPE_STRING_SEQUENCE
;
475 case atype_sequence_nestable
:
476 if (field
->type
.u
.sequence_nestable
.elem_type
->atype
!= atype_integer
) {
477 ERR("Sequence nesting only supports integer types.");
481 load
->object_type
= OBJECT_TYPE_STRING
;
483 if (field
->type
.u
.sequence_nestable
.elem_type
->u
.integer
.encoding
== lttng_encode_none
) {
484 load
->object_type
= OBJECT_TYPE_SEQUENCE
;
487 load
->object_type
= OBJECT_TYPE_STRING_SEQUENCE
;
493 load
->object_type
= OBJECT_TYPE_STRING
;
496 load
->object_type
= OBJECT_TYPE_DOUBLE
;
499 load
->object_type
= OBJECT_TYPE_DYNAMIC
;
502 ERR("Structure type cannot be loaded.");
505 ERR("Unknown type: %d", (int) field
->type
.atype
);
511 static int specialize_context_lookup(struct lttng_ctx
*ctx
,
512 struct bytecode_runtime
*runtime
,
513 struct load_op
*insn
,
514 struct vstack_load
*load
)
517 struct lttng_ctx_field
*ctx_field
;
518 struct lttng_event_field
*field
;
519 struct filter_get_index_data gid
;
522 idx
= specialize_context_lookup_name(ctx
, runtime
, insn
);
526 ctx_field
= &ctx
->fields
[idx
];
527 field
= &ctx_field
->event_field
;
528 ret
= specialize_load_object(field
, load
, true);
531 /* Specialize each get_symbol into a get_index. */
532 insn
->op
= FILTER_OP_GET_INDEX_U16
;
533 memset(&gid
, 0, sizeof(gid
));
535 gid
.elem
.type
= load
->object_type
;
536 data_offset
= bytecode_push_data(runtime
, &gid
,
537 __alignof__(gid
), sizeof(gid
));
538 if (data_offset
< 0) {
541 ((struct get_index_u16
*) insn
->data
)->index
= data_offset
;
545 static int specialize_app_context_lookup(struct lttng_ctx
**pctx
,
546 struct bytecode_runtime
*runtime
,
547 struct load_op
*insn
,
548 struct vstack_load
*load
)
551 const char *orig_name
;
554 struct lttng_ctx_field
*ctx_field
;
555 struct lttng_event_field
*field
;
556 struct filter_get_index_data gid
;
559 offset
= ((struct get_symbol
*) insn
->data
)->offset
;
560 orig_name
= runtime
->p
.bc
->bc
.data
+ runtime
->p
.bc
->bc
.reloc_offset
+ offset
;
561 name
= zmalloc(strlen(orig_name
) + strlen("$app.") + 1);
566 strcpy(name
, "$app.");
567 strcat(name
, orig_name
);
568 idx
= lttng_get_context_index(*pctx
, name
);
570 assert(lttng_context_is_app(name
));
571 ret
= lttng_ust_add_app_context_to_ctx_rcu(name
,
575 idx
= lttng_get_context_index(*pctx
, name
);
579 ctx_field
= &(*pctx
)->fields
[idx
];
580 field
= &ctx_field
->event_field
;
581 ret
= specialize_load_object(field
, load
, true);
584 /* Specialize each get_symbol into a get_index. */
585 insn
->op
= FILTER_OP_GET_INDEX_U16
;
586 memset(&gid
, 0, sizeof(gid
));
588 gid
.elem
.type
= load
->object_type
;
589 data_offset
= bytecode_push_data(runtime
, &gid
,
590 __alignof__(gid
), sizeof(gid
));
591 if (data_offset
< 0) {
595 ((struct get_index_u16
*) insn
->data
)->index
= data_offset
;
602 static int specialize_event_payload_lookup(struct lttng_event
*event
,
603 struct bytecode_runtime
*runtime
,
604 struct load_op
*insn
,
605 struct vstack_load
*load
)
609 const struct lttng_event_desc
*desc
= event
->desc
;
610 unsigned int i
, nr_fields
;
612 uint32_t field_offset
= 0;
613 const struct lttng_event_field
*field
;
615 struct filter_get_index_data gid
;
618 nr_fields
= desc
->nr_fields
;
619 offset
= ((struct get_symbol
*) insn
->data
)->offset
;
620 name
= runtime
->p
.bc
->bc
.data
+ runtime
->p
.bc
->bc
.reloc_offset
+ offset
;
621 for (i
= 0; i
< nr_fields
; i
++) {
622 field
= &desc
->fields
[i
];
623 if (field
->u
.ext
.nofilter
) {
626 if (!strcmp(field
->name
, name
)) {
630 /* compute field offset on stack */
631 switch (field
->type
.atype
) {
634 case atype_enum_nestable
:
635 field_offset
+= sizeof(int64_t);
638 case atype_array_nestable
:
640 case atype_sequence_nestable
:
641 field_offset
+= sizeof(unsigned long);
642 field_offset
+= sizeof(void *);
645 field_offset
+= sizeof(void *);
648 field_offset
+= sizeof(double);
660 ret
= specialize_load_object(field
, load
, false);
664 /* Specialize each get_symbol into a get_index. */
665 insn
->op
= FILTER_OP_GET_INDEX_U16
;
666 memset(&gid
, 0, sizeof(gid
));
667 gid
.offset
= field_offset
;
668 gid
.elem
.type
= load
->object_type
;
669 data_offset
= bytecode_push_data(runtime
, &gid
,
670 __alignof__(gid
), sizeof(gid
));
671 if (data_offset
< 0) {
675 ((struct get_index_u16
*) insn
->data
)->index
= data_offset
;
681 int lttng_filter_specialize_bytecode(struct lttng_event
*event
,
682 struct bytecode_runtime
*bytecode
)
684 void *pc
, *next_pc
, *start_pc
;
686 struct vstack _stack
;
687 struct vstack
*stack
= &_stack
;
688 struct lttng_ctx
**pctx
= bytecode
->p
.pctx
;
692 start_pc
= &bytecode
->code
[0];
693 for (pc
= next_pc
= start_pc
; pc
- start_pc
< bytecode
->len
;
695 switch (*(filter_opcode_t
*) pc
) {
696 case FILTER_OP_UNKNOWN
:
698 ERR("unknown bytecode op %u\n",
699 (unsigned int) *(filter_opcode_t
*) pc
);
703 case FILTER_OP_RETURN
:
704 if (vstack_ax(stack
)->type
== REG_S64
)
705 *(filter_opcode_t
*) pc
= FILTER_OP_RETURN_S64
;
709 case FILTER_OP_RETURN_S64
:
710 if (vstack_ax(stack
)->type
!= REG_S64
) {
711 ERR("Unexpected register type\n");
723 case FILTER_OP_MINUS
:
724 ERR("unsupported bytecode op %u\n",
725 (unsigned int) *(filter_opcode_t
*) pc
);
731 struct binary_op
*insn
= (struct binary_op
*) pc
;
733 switch(vstack_ax(stack
)->type
) {
735 ERR("unknown register type\n");
740 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
742 if (vstack_bx(stack
)->type
== REG_STAR_GLOB_STRING
)
743 insn
->op
= FILTER_OP_EQ_STAR_GLOB_STRING
;
745 insn
->op
= FILTER_OP_EQ_STRING
;
747 case REG_STAR_GLOB_STRING
:
748 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
750 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 insn
->op
= FILTER_OP_EQ_S64
;
758 insn
->op
= FILTER_OP_EQ_DOUBLE_S64
;
761 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
763 if (vstack_bx(stack
)->type
== REG_S64
)
764 insn
->op
= FILTER_OP_EQ_S64_DOUBLE
;
766 insn
->op
= FILTER_OP_EQ_DOUBLE
;
769 break; /* Dynamic typing. */
772 if (vstack_pop(stack
)) {
776 vstack_ax(stack
)->type
= REG_S64
;
777 next_pc
+= sizeof(struct binary_op
);
783 struct binary_op
*insn
= (struct binary_op
*) pc
;
785 switch(vstack_ax(stack
)->type
) {
787 ERR("unknown register type\n");
792 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
794 if (vstack_bx(stack
)->type
== REG_STAR_GLOB_STRING
)
795 insn
->op
= FILTER_OP_NE_STAR_GLOB_STRING
;
797 insn
->op
= FILTER_OP_NE_STRING
;
799 case REG_STAR_GLOB_STRING
:
800 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
802 insn
->op
= FILTER_OP_NE_STAR_GLOB_STRING
;
805 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
807 if (vstack_bx(stack
)->type
== REG_S64
)
808 insn
->op
= FILTER_OP_NE_S64
;
810 insn
->op
= FILTER_OP_NE_DOUBLE_S64
;
813 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
815 if (vstack_bx(stack
)->type
== REG_S64
)
816 insn
->op
= FILTER_OP_NE_S64_DOUBLE
;
818 insn
->op
= FILTER_OP_NE_DOUBLE
;
821 break; /* Dynamic typing. */
824 if (vstack_pop(stack
)) {
828 vstack_ax(stack
)->type
= REG_S64
;
829 next_pc
+= sizeof(struct binary_op
);
835 struct binary_op
*insn
= (struct binary_op
*) pc
;
837 switch(vstack_ax(stack
)->type
) {
839 ERR("unknown register type\n");
843 case REG_STAR_GLOB_STRING
:
844 ERR("invalid register type for > binary operator\n");
848 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
850 insn
->op
= FILTER_OP_GT_STRING
;
853 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
855 if (vstack_bx(stack
)->type
== REG_S64
)
856 insn
->op
= FILTER_OP_GT_S64
;
858 insn
->op
= FILTER_OP_GT_DOUBLE_S64
;
861 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
863 if (vstack_bx(stack
)->type
== REG_S64
)
864 insn
->op
= FILTER_OP_GT_S64_DOUBLE
;
866 insn
->op
= FILTER_OP_GT_DOUBLE
;
869 break; /* Dynamic typing. */
872 if (vstack_pop(stack
)) {
876 vstack_ax(stack
)->type
= REG_S64
;
877 next_pc
+= sizeof(struct binary_op
);
883 struct binary_op
*insn
= (struct binary_op
*) pc
;
885 switch(vstack_ax(stack
)->type
) {
887 ERR("unknown register type\n");
891 case REG_STAR_GLOB_STRING
:
892 ERR("invalid register type for < binary operator\n");
896 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
898 insn
->op
= FILTER_OP_LT_STRING
;
901 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
903 if (vstack_bx(stack
)->type
== REG_S64
)
904 insn
->op
= FILTER_OP_LT_S64
;
906 insn
->op
= FILTER_OP_LT_DOUBLE_S64
;
909 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
911 if (vstack_bx(stack
)->type
== REG_S64
)
912 insn
->op
= FILTER_OP_LT_S64_DOUBLE
;
914 insn
->op
= FILTER_OP_LT_DOUBLE
;
917 break; /* Dynamic typing. */
920 if (vstack_pop(stack
)) {
924 vstack_ax(stack
)->type
= REG_S64
;
925 next_pc
+= sizeof(struct binary_op
);
931 struct binary_op
*insn
= (struct binary_op
*) pc
;
933 switch(vstack_ax(stack
)->type
) {
935 ERR("unknown register type\n");
939 case REG_STAR_GLOB_STRING
:
940 ERR("invalid register type for >= binary operator\n");
944 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
946 insn
->op
= FILTER_OP_GE_STRING
;
949 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
951 if (vstack_bx(stack
)->type
== REG_S64
)
952 insn
->op
= FILTER_OP_GE_S64
;
954 insn
->op
= FILTER_OP_GE_DOUBLE_S64
;
957 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
959 if (vstack_bx(stack
)->type
== REG_S64
)
960 insn
->op
= FILTER_OP_GE_S64_DOUBLE
;
962 insn
->op
= FILTER_OP_GE_DOUBLE
;
965 break; /* Dynamic typing. */
968 if (vstack_pop(stack
)) {
972 vstack_ax(stack
)->type
= REG_S64
;
973 next_pc
+= sizeof(struct binary_op
);
978 struct binary_op
*insn
= (struct binary_op
*) pc
;
980 switch(vstack_ax(stack
)->type
) {
982 ERR("unknown register type\n");
986 case REG_STAR_GLOB_STRING
:
987 ERR("invalid register type for <= binary operator\n");
991 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
993 insn
->op
= FILTER_OP_LE_STRING
;
996 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
998 if (vstack_bx(stack
)->type
== REG_S64
)
999 insn
->op
= FILTER_OP_LE_S64
;
1001 insn
->op
= FILTER_OP_LE_DOUBLE_S64
;
1004 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
1006 if (vstack_bx(stack
)->type
== REG_S64
)
1007 insn
->op
= FILTER_OP_LE_S64_DOUBLE
;
1009 insn
->op
= FILTER_OP_LE_DOUBLE
;
1012 break; /* Dynamic typing. */
1014 vstack_ax(stack
)->type
= REG_S64
;
1015 next_pc
+= sizeof(struct binary_op
);
1019 case FILTER_OP_EQ_STRING
:
1020 case FILTER_OP_NE_STRING
:
1021 case FILTER_OP_GT_STRING
:
1022 case FILTER_OP_LT_STRING
:
1023 case FILTER_OP_GE_STRING
:
1024 case FILTER_OP_LE_STRING
:
1025 case FILTER_OP_EQ_STAR_GLOB_STRING
:
1026 case FILTER_OP_NE_STAR_GLOB_STRING
:
1027 case FILTER_OP_EQ_S64
:
1028 case FILTER_OP_NE_S64
:
1029 case FILTER_OP_GT_S64
:
1030 case FILTER_OP_LT_S64
:
1031 case FILTER_OP_GE_S64
:
1032 case FILTER_OP_LE_S64
:
1033 case FILTER_OP_EQ_DOUBLE
:
1034 case FILTER_OP_NE_DOUBLE
:
1035 case FILTER_OP_GT_DOUBLE
:
1036 case FILTER_OP_LT_DOUBLE
:
1037 case FILTER_OP_GE_DOUBLE
:
1038 case FILTER_OP_LE_DOUBLE
:
1039 case FILTER_OP_EQ_DOUBLE_S64
:
1040 case FILTER_OP_NE_DOUBLE_S64
:
1041 case FILTER_OP_GT_DOUBLE_S64
:
1042 case FILTER_OP_LT_DOUBLE_S64
:
1043 case FILTER_OP_GE_DOUBLE_S64
:
1044 case FILTER_OP_LE_DOUBLE_S64
:
1045 case FILTER_OP_EQ_S64_DOUBLE
:
1046 case FILTER_OP_NE_S64_DOUBLE
:
1047 case FILTER_OP_GT_S64_DOUBLE
:
1048 case FILTER_OP_LT_S64_DOUBLE
:
1049 case FILTER_OP_GE_S64_DOUBLE
:
1050 case FILTER_OP_LE_S64_DOUBLE
:
1051 case FILTER_OP_BIT_RSHIFT
:
1052 case FILTER_OP_BIT_LSHIFT
:
1053 case FILTER_OP_BIT_AND
:
1054 case FILTER_OP_BIT_OR
:
1055 case FILTER_OP_BIT_XOR
:
1058 if (vstack_pop(stack
)) {
1062 vstack_ax(stack
)->type
= REG_S64
;
1063 next_pc
+= sizeof(struct binary_op
);
1068 case FILTER_OP_UNARY_PLUS
:
1070 struct unary_op
*insn
= (struct unary_op
*) pc
;
1072 switch(vstack_ax(stack
)->type
) {
1074 ERR("unknown register type\n");
1079 insn
->op
= FILTER_OP_UNARY_PLUS_S64
;
1082 insn
->op
= FILTER_OP_UNARY_PLUS_DOUBLE
;
1084 case REG_UNKNOWN
: /* Dynamic typing. */
1088 next_pc
+= sizeof(struct unary_op
);
1092 case FILTER_OP_UNARY_MINUS
:
1094 struct unary_op
*insn
= (struct unary_op
*) pc
;
1096 switch(vstack_ax(stack
)->type
) {
1098 ERR("unknown register type\n");
1103 insn
->op
= FILTER_OP_UNARY_MINUS_S64
;
1106 insn
->op
= FILTER_OP_UNARY_MINUS_DOUBLE
;
1108 case REG_UNKNOWN
: /* Dynamic typing. */
1112 next_pc
+= sizeof(struct unary_op
);
1116 case FILTER_OP_UNARY_NOT
:
1118 struct unary_op
*insn
= (struct unary_op
*) pc
;
1120 switch(vstack_ax(stack
)->type
) {
1122 ERR("unknown register type\n");
1127 insn
->op
= FILTER_OP_UNARY_NOT_S64
;
1130 insn
->op
= FILTER_OP_UNARY_NOT_DOUBLE
;
1132 case REG_UNKNOWN
: /* Dynamic typing. */
1136 next_pc
+= sizeof(struct unary_op
);
1140 case FILTER_OP_UNARY_BIT_NOT
:
1143 next_pc
+= sizeof(struct unary_op
);
1147 case FILTER_OP_UNARY_PLUS_S64
:
1148 case FILTER_OP_UNARY_MINUS_S64
:
1149 case FILTER_OP_UNARY_NOT_S64
:
1150 case FILTER_OP_UNARY_PLUS_DOUBLE
:
1151 case FILTER_OP_UNARY_MINUS_DOUBLE
:
1152 case FILTER_OP_UNARY_NOT_DOUBLE
:
1155 next_pc
+= sizeof(struct unary_op
);
1163 /* Continue to next instruction */
1164 /* Pop 1 when jump not taken */
1165 if (vstack_pop(stack
)) {
1169 next_pc
+= sizeof(struct logical_op
);
1173 /* load field ref */
1174 case FILTER_OP_LOAD_FIELD_REF
:
1176 ERR("Unknown field ref type\n");
1180 /* get context ref */
1181 case FILTER_OP_GET_CONTEXT_REF
:
1183 if (vstack_push(stack
)) {
1187 vstack_ax(stack
)->type
= REG_UNKNOWN
;
1188 next_pc
+= sizeof(struct load_op
) + sizeof(struct field_ref
);
1191 case FILTER_OP_LOAD_FIELD_REF_STRING
:
1192 case FILTER_OP_LOAD_FIELD_REF_SEQUENCE
:
1193 case FILTER_OP_GET_CONTEXT_REF_STRING
:
1195 if (vstack_push(stack
)) {
1199 vstack_ax(stack
)->type
= REG_STRING
;
1200 next_pc
+= sizeof(struct load_op
) + sizeof(struct field_ref
);
1203 case FILTER_OP_LOAD_FIELD_REF_S64
:
1204 case FILTER_OP_GET_CONTEXT_REF_S64
:
1206 if (vstack_push(stack
)) {
1210 vstack_ax(stack
)->type
= REG_S64
;
1211 next_pc
+= sizeof(struct load_op
) + sizeof(struct field_ref
);
1214 case FILTER_OP_LOAD_FIELD_REF_DOUBLE
:
1215 case FILTER_OP_GET_CONTEXT_REF_DOUBLE
:
1217 if (vstack_push(stack
)) {
1221 vstack_ax(stack
)->type
= REG_DOUBLE
;
1222 next_pc
+= sizeof(struct load_op
) + sizeof(struct field_ref
);
1226 /* load from immediate operand */
1227 case FILTER_OP_LOAD_STRING
:
1229 struct load_op
*insn
= (struct load_op
*) pc
;
1231 if (vstack_push(stack
)) {
1235 vstack_ax(stack
)->type
= REG_STRING
;
1236 next_pc
+= sizeof(struct load_op
) + strlen(insn
->data
) + 1;
1240 case FILTER_OP_LOAD_STAR_GLOB_STRING
:
1242 struct load_op
*insn
= (struct load_op
*) pc
;
1244 if (vstack_push(stack
)) {
1248 vstack_ax(stack
)->type
= REG_STAR_GLOB_STRING
;
1249 next_pc
+= sizeof(struct load_op
) + strlen(insn
->data
) + 1;
1253 case FILTER_OP_LOAD_S64
:
1255 if (vstack_push(stack
)) {
1259 vstack_ax(stack
)->type
= REG_S64
;
1260 next_pc
+= sizeof(struct load_op
)
1261 + sizeof(struct literal_numeric
);
1265 case FILTER_OP_LOAD_DOUBLE
:
1267 if (vstack_push(stack
)) {
1271 vstack_ax(stack
)->type
= REG_DOUBLE
;
1272 next_pc
+= sizeof(struct load_op
)
1273 + sizeof(struct literal_double
);
1278 case FILTER_OP_CAST_TO_S64
:
1280 struct cast_op
*insn
= (struct cast_op
*) pc
;
1282 switch (vstack_ax(stack
)->type
) {
1284 ERR("unknown register type\n");
1289 case REG_STAR_GLOB_STRING
:
1290 ERR("Cast op can only be applied to numeric or floating point registers\n");
1294 insn
->op
= FILTER_OP_CAST_NOP
;
1297 insn
->op
= FILTER_OP_CAST_DOUBLE_TO_S64
;
1303 vstack_ax(stack
)->type
= REG_S64
;
1304 next_pc
+= sizeof(struct cast_op
);
1307 case FILTER_OP_CAST_DOUBLE_TO_S64
:
1310 vstack_ax(stack
)->type
= REG_S64
;
1311 next_pc
+= sizeof(struct cast_op
);
1314 case FILTER_OP_CAST_NOP
:
1316 next_pc
+= sizeof(struct cast_op
);
1321 * Instructions for recursive traversal through composed types.
1323 case FILTER_OP_GET_CONTEXT_ROOT
:
1325 if (vstack_push(stack
)) {
1329 vstack_ax(stack
)->type
= REG_PTR
;
1330 vstack_ax(stack
)->load
.type
= LOAD_ROOT_CONTEXT
;
1331 next_pc
+= sizeof(struct load_op
);
1334 case FILTER_OP_GET_APP_CONTEXT_ROOT
:
1336 if (vstack_push(stack
)) {
1340 vstack_ax(stack
)->type
= REG_PTR
;
1341 vstack_ax(stack
)->load
.type
= LOAD_ROOT_APP_CONTEXT
;
1342 next_pc
+= sizeof(struct load_op
);
1345 case FILTER_OP_GET_PAYLOAD_ROOT
:
1347 if (vstack_push(stack
)) {
1351 vstack_ax(stack
)->type
= REG_PTR
;
1352 vstack_ax(stack
)->load
.type
= LOAD_ROOT_PAYLOAD
;
1353 next_pc
+= sizeof(struct load_op
);
1357 case FILTER_OP_LOAD_FIELD
:
1359 struct load_op
*insn
= (struct load_op
*) pc
;
1361 assert(vstack_ax(stack
)->type
== REG_PTR
);
1363 ret
= specialize_load_field(vstack_ax(stack
), insn
);
1367 next_pc
+= sizeof(struct load_op
);
1371 case FILTER_OP_LOAD_FIELD_S8
:
1372 case FILTER_OP_LOAD_FIELD_S16
:
1373 case FILTER_OP_LOAD_FIELD_S32
:
1374 case FILTER_OP_LOAD_FIELD_S64
:
1375 case FILTER_OP_LOAD_FIELD_U8
:
1376 case FILTER_OP_LOAD_FIELD_U16
:
1377 case FILTER_OP_LOAD_FIELD_U32
:
1378 case FILTER_OP_LOAD_FIELD_U64
:
1381 vstack_ax(stack
)->type
= REG_S64
;
1382 next_pc
+= sizeof(struct load_op
);
1386 case FILTER_OP_LOAD_FIELD_STRING
:
1387 case FILTER_OP_LOAD_FIELD_SEQUENCE
:
1390 vstack_ax(stack
)->type
= REG_STRING
;
1391 next_pc
+= sizeof(struct load_op
);
1395 case FILTER_OP_LOAD_FIELD_DOUBLE
:
1398 vstack_ax(stack
)->type
= REG_DOUBLE
;
1399 next_pc
+= sizeof(struct load_op
);
1403 case FILTER_OP_GET_SYMBOL
:
1405 struct load_op
*insn
= (struct load_op
*) pc
;
1407 dbg_printf("op get symbol\n");
1408 switch (vstack_ax(stack
)->load
.type
) {
1410 ERR("Nested fields not implemented yet.");
1413 case LOAD_ROOT_CONTEXT
:
1414 /* Lookup context field. */
1415 ret
= specialize_context_lookup(*pctx
,
1417 &vstack_ax(stack
)->load
);
1421 case LOAD_ROOT_APP_CONTEXT
:
1422 /* Lookup app context field. */
1423 ret
= specialize_app_context_lookup(pctx
,
1425 &vstack_ax(stack
)->load
);
1429 case LOAD_ROOT_PAYLOAD
:
1430 /* Lookup event payload field. */
1431 ret
= specialize_event_payload_lookup(event
,
1433 &vstack_ax(stack
)->load
);
1438 next_pc
+= sizeof(struct load_op
) + sizeof(struct get_symbol
);
1442 case FILTER_OP_GET_SYMBOL_FIELD
:
1444 /* Always generated by specialize phase. */
1449 case FILTER_OP_GET_INDEX_U16
:
1451 struct load_op
*insn
= (struct load_op
*) pc
;
1452 struct get_index_u16
*index
= (struct get_index_u16
*) insn
->data
;
1454 dbg_printf("op get index u16\n");
1456 ret
= specialize_get_index(bytecode
, insn
, index
->index
,
1457 vstack_ax(stack
), sizeof(*index
));
1460 next_pc
+= sizeof(struct load_op
) + sizeof(struct get_index_u16
);
1464 case FILTER_OP_GET_INDEX_U64
:
1466 struct load_op
*insn
= (struct load_op
*) pc
;
1467 struct get_index_u64
*index
= (struct get_index_u64
*) insn
->data
;
1469 dbg_printf("op get index u64\n");
1471 ret
= specialize_get_index(bytecode
, insn
, index
->index
,
1472 vstack_ax(stack
), sizeof(*index
));
1475 next_pc
+= sizeof(struct load_op
) + sizeof(struct get_index_u64
);