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>
34 static int lttng_fls(int val
)
37 unsigned int x
= (unsigned int) val
;
41 if (!(x
& 0xFFFF0000U
)) {
45 if (!(x
& 0xFF000000U
)) {
49 if (!(x
& 0xF0000000U
)) {
53 if (!(x
& 0xC0000000U
)) {
57 if (!(x
& 0x80000000U
)) {
63 static int get_count_order(unsigned int count
)
67 order
= lttng_fls(count
) - 1;
68 if (count
& (count
- 1))
73 static ssize_t
bytecode_reserve_data(struct bytecode_runtime
*runtime
,
74 size_t align
, size_t len
)
77 size_t padding
= offset_align(runtime
->data_len
, align
);
78 size_t new_len
= runtime
->data_len
+ padding
+ len
;
79 size_t new_alloc_len
= new_len
;
80 size_t old_alloc_len
= runtime
->data_alloc_len
;
82 if (new_len
> FILTER_MAX_DATA_LEN
)
85 if (new_alloc_len
> old_alloc_len
) {
89 max_t(size_t, 1U << get_count_order(new_alloc_len
), old_alloc_len
<< 1);
90 newptr
= realloc(runtime
->data
, new_alloc_len
);
93 runtime
->data
= newptr
;
94 /* We zero directly the memory from start of allocation. */
95 memset(&runtime
->data
[old_alloc_len
], 0, new_alloc_len
- old_alloc_len
);
96 runtime
->data_alloc_len
= new_alloc_len
;
98 runtime
->data_len
+= padding
;
99 ret
= runtime
->data_len
;
100 runtime
->data_len
+= len
;
104 static ssize_t
bytecode_push_data(struct bytecode_runtime
*runtime
,
105 const void *p
, size_t align
, size_t len
)
109 offset
= bytecode_reserve_data(runtime
, align
, len
);
112 memcpy(&runtime
->data
[offset
], p
, len
);
116 static int specialize_load_field(struct vstack_entry
*stack_top
,
117 struct load_op
*insn
)
121 switch (stack_top
->load
.type
) {
124 case LOAD_ROOT_CONTEXT
:
125 case LOAD_ROOT_APP_CONTEXT
:
126 case LOAD_ROOT_PAYLOAD
:
128 dbg_printf("Filter warning: cannot load root, missing field name.\n");
132 switch (stack_top
->load
.object_type
) {
134 dbg_printf("op load field s8\n");
135 stack_top
->type
= REG_S64
;
136 if (!stack_top
->load
.rev_bo
)
137 insn
->op
= FILTER_OP_LOAD_FIELD_S8
;
139 case OBJECT_TYPE_S16
:
140 dbg_printf("op load field s16\n");
141 stack_top
->type
= REG_S64
;
142 if (!stack_top
->load
.rev_bo
)
143 insn
->op
= FILTER_OP_LOAD_FIELD_S16
;
145 case OBJECT_TYPE_S32
:
146 dbg_printf("op load field s32\n");
147 stack_top
->type
= REG_S64
;
148 if (!stack_top
->load
.rev_bo
)
149 insn
->op
= FILTER_OP_LOAD_FIELD_S32
;
151 case OBJECT_TYPE_S64
:
152 dbg_printf("op load field s64\n");
153 stack_top
->type
= REG_S64
;
154 if (!stack_top
->load
.rev_bo
)
155 insn
->op
= FILTER_OP_LOAD_FIELD_S64
;
158 dbg_printf("op load field u8\n");
159 stack_top
->type
= REG_S64
;
160 insn
->op
= FILTER_OP_LOAD_FIELD_U8
;
162 case OBJECT_TYPE_U16
:
163 dbg_printf("op load field u16\n");
164 stack_top
->type
= REG_S64
;
165 if (!stack_top
->load
.rev_bo
)
166 insn
->op
= FILTER_OP_LOAD_FIELD_U16
;
168 case OBJECT_TYPE_U32
:
169 dbg_printf("op load field u32\n");
170 stack_top
->type
= REG_S64
;
171 if (!stack_top
->load
.rev_bo
)
172 insn
->op
= FILTER_OP_LOAD_FIELD_U32
;
174 case OBJECT_TYPE_U64
:
175 dbg_printf("op load field u64\n");
176 stack_top
->type
= REG_S64
;
177 if (!stack_top
->load
.rev_bo
)
178 insn
->op
= FILTER_OP_LOAD_FIELD_U64
;
180 case OBJECT_TYPE_DOUBLE
:
181 stack_top
->type
= REG_DOUBLE
;
182 insn
->op
= FILTER_OP_LOAD_FIELD_DOUBLE
;
184 case OBJECT_TYPE_STRING
:
185 dbg_printf("op load field string\n");
186 stack_top
->type
= REG_STRING
;
187 insn
->op
= FILTER_OP_LOAD_FIELD_STRING
;
189 case OBJECT_TYPE_STRING_SEQUENCE
:
190 dbg_printf("op load field string sequence\n");
191 stack_top
->type
= REG_STRING
;
192 insn
->op
= FILTER_OP_LOAD_FIELD_SEQUENCE
;
194 case OBJECT_TYPE_DYNAMIC
:
195 dbg_printf("op load field dynamic\n");
196 stack_top
->type
= REG_UNKNOWN
;
197 /* Don't specialize load op. */
199 case OBJECT_TYPE_SEQUENCE
:
200 case OBJECT_TYPE_ARRAY
:
201 case OBJECT_TYPE_STRUCT
:
202 case OBJECT_TYPE_VARIANT
:
203 ERR("Sequences, arrays, struct and variant cannot be loaded (nested types).");
213 static int specialize_get_index_object_type(enum object_type
*otype
,
214 int signedness
, uint32_t elem_len
)
219 *otype
= OBJECT_TYPE_S8
;
221 *otype
= OBJECT_TYPE_U8
;
225 *otype
= OBJECT_TYPE_S16
;
227 *otype
= OBJECT_TYPE_U16
;
231 *otype
= OBJECT_TYPE_S32
;
233 *otype
= OBJECT_TYPE_U32
;
237 *otype
= OBJECT_TYPE_S64
;
239 *otype
= OBJECT_TYPE_U64
;
247 static int specialize_get_index(struct bytecode_runtime
*runtime
,
248 struct load_op
*insn
, uint64_t index
,
249 struct vstack_entry
*stack_top
,
253 struct filter_get_index_data gid
;
256 memset(&gid
, 0, sizeof(gid
));
257 switch (stack_top
->load
.type
) {
259 switch (stack_top
->load
.object_type
) {
260 case OBJECT_TYPE_ARRAY
:
262 const struct lttng_event_field
*field
;
263 uint32_t elem_len
, num_elems
;
266 field
= stack_top
->load
.field
;
267 elem_len
= field
->type
.u
.array
.elem_type
.u
.basic
.integer
.size
;
268 signedness
= field
->type
.u
.array
.elem_type
.u
.basic
.integer
.signedness
;
269 num_elems
= field
->type
.u
.array
.length
;
270 if (index
>= num_elems
) {
274 ret
= specialize_get_index_object_type(&stack_top
->load
.object_type
,
275 signedness
, elem_len
);
278 gid
.offset
= index
* (elem_len
/ CHAR_BIT
);
279 gid
.array_len
= num_elems
* (elem_len
/ CHAR_BIT
);
280 gid
.elem
.type
= stack_top
->load
.object_type
;
281 gid
.elem
.len
= elem_len
;
282 if (field
->type
.u
.array
.elem_type
.u
.basic
.integer
.reverse_byte_order
)
283 gid
.elem
.rev_bo
= true;
284 stack_top
->load
.rev_bo
= gid
.elem
.rev_bo
;
287 case OBJECT_TYPE_SEQUENCE
:
289 const struct lttng_event_field
*field
;
293 field
= stack_top
->load
.field
;
294 elem_len
= field
->type
.u
.sequence
.elem_type
.u
.basic
.integer
.size
;
295 signedness
= field
->type
.u
.sequence
.elem_type
.u
.basic
.integer
.signedness
;
296 ret
= specialize_get_index_object_type(&stack_top
->load
.object_type
,
297 signedness
, elem_len
);
300 gid
.offset
= index
* (elem_len
/ CHAR_BIT
);
301 gid
.elem
.type
= stack_top
->load
.object_type
;
302 gid
.elem
.len
= elem_len
;
303 if (field
->type
.u
.sequence
.elem_type
.u
.basic
.integer
.reverse_byte_order
)
304 gid
.elem
.rev_bo
= true;
305 stack_top
->load
.rev_bo
= gid
.elem
.rev_bo
;
308 case OBJECT_TYPE_STRUCT
:
309 /* Only generated by the specialize phase. */
310 case OBJECT_TYPE_VARIANT
: /* Fall-through */
312 ERR("Unexpected get index type %d",
313 (int) stack_top
->load
.object_type
);
318 case LOAD_ROOT_CONTEXT
:
319 case LOAD_ROOT_APP_CONTEXT
:
320 case LOAD_ROOT_PAYLOAD
:
321 ERR("Index lookup for root field not implemented yet.");
325 data_offset
= bytecode_push_data(runtime
, &gid
,
326 __alignof__(gid
), sizeof(gid
));
327 if (data_offset
< 0) {
333 ((struct get_index_u16
*) insn
->data
)->index
= data_offset
;
336 ((struct get_index_u64
*) insn
->data
)->index
= data_offset
;
349 static int specialize_context_lookup_name(struct lttng_ctx
*ctx
,
350 struct bytecode_runtime
*bytecode
,
351 struct load_op
*insn
)
356 offset
= ((struct get_symbol
*) insn
->data
)->offset
;
357 name
= bytecode
->p
.bc
->bc
.data
+ bytecode
->p
.bc
->bc
.reloc_offset
+ offset
;
358 return lttng_get_context_index(ctx
, name
);
361 static int specialize_load_object(const struct lttng_event_field
*field
,
362 struct vstack_load
*load
, bool is_context
)
364 load
->type
= LOAD_OBJECT
;
366 * LTTng-UST layout all integer fields as s64 on the stack for the filter.
368 switch (field
->type
.atype
) {
370 if (field
->type
.u
.basic
.integer
.signedness
)
371 load
->object_type
= OBJECT_TYPE_S64
;
373 load
->object_type
= OBJECT_TYPE_U64
;
374 load
->rev_bo
= false;
378 const struct lttng_integer_type
*itype
=
379 &field
->type
.u
.basic
.enumeration
.container_type
;
381 if (itype
->signedness
)
382 load
->object_type
= OBJECT_TYPE_S64
;
384 load
->object_type
= OBJECT_TYPE_U64
;
385 load
->rev_bo
= false;
389 if (field
->type
.u
.array
.elem_type
.atype
!= atype_integer
) {
390 ERR("Array nesting only supports integer types.");
394 load
->object_type
= OBJECT_TYPE_STRING
;
396 if (field
->type
.u
.array
.elem_type
.u
.basic
.integer
.encoding
== lttng_encode_none
) {
397 load
->object_type
= OBJECT_TYPE_ARRAY
;
400 load
->object_type
= OBJECT_TYPE_STRING_SEQUENCE
;
405 if (field
->type
.u
.sequence
.elem_type
.atype
!= atype_integer
) {
406 ERR("Sequence nesting only supports integer types.");
410 load
->object_type
= OBJECT_TYPE_STRING
;
412 if (field
->type
.u
.sequence
.elem_type
.u
.basic
.integer
.encoding
== lttng_encode_none
) {
413 load
->object_type
= OBJECT_TYPE_SEQUENCE
;
416 load
->object_type
= OBJECT_TYPE_STRING_SEQUENCE
;
421 load
->object_type
= OBJECT_TYPE_STRING
;
424 load
->object_type
= OBJECT_TYPE_DOUBLE
;
427 load
->object_type
= OBJECT_TYPE_DYNAMIC
;
430 ERR("Structure type cannot be loaded.");
433 ERR("Unknown type: %d", (int) field
->type
.atype
);
439 static int specialize_context_lookup(struct lttng_ctx
*ctx
,
440 struct bytecode_runtime
*runtime
,
441 struct load_op
*insn
,
442 struct vstack_load
*load
)
445 struct lttng_ctx_field
*ctx_field
;
446 struct lttng_event_field
*field
;
447 struct filter_get_index_data gid
;
450 idx
= specialize_context_lookup_name(ctx
, runtime
, insn
);
454 ctx_field
= &ctx
->fields
[idx
];
455 field
= &ctx_field
->event_field
;
456 ret
= specialize_load_object(field
, load
, true);
459 /* Specialize each get_symbol into a get_index. */
460 insn
->op
= FILTER_OP_GET_INDEX_U16
;
461 memset(&gid
, 0, sizeof(gid
));
463 gid
.elem
.type
= load
->object_type
;
464 data_offset
= bytecode_push_data(runtime
, &gid
,
465 __alignof__(gid
), sizeof(gid
));
466 if (data_offset
< 0) {
469 ((struct get_index_u16
*) insn
->data
)->index
= data_offset
;
473 static int specialize_app_context_lookup(struct lttng_ctx
*ctx
,
474 struct bytecode_runtime
*runtime
,
475 struct load_op
*insn
,
476 struct vstack_load
*load
)
479 const char *orig_name
;
482 struct lttng_ctx_field
*ctx_field
;
483 struct lttng_event_field
*field
;
484 struct filter_get_index_data gid
;
487 offset
= ((struct get_symbol
*) insn
->data
)->offset
;
488 orig_name
= runtime
->p
.bc
->bc
.data
+ runtime
->p
.bc
->bc
.reloc_offset
+ offset
;
489 name
= zmalloc(strlen(orig_name
) + strlen("$app.") + 1);
494 strcpy(name
, "$app.");
495 strcat(name
, orig_name
);
496 idx
= lttng_get_context_index(ctx
, name
);
498 assert(lttng_context_is_app(name
));
499 ret
= lttng_ust_add_app_context_to_ctx_rcu(name
,
503 idx
= lttng_get_context_index(ctx
, name
);
507 ctx_field
= &ctx
->fields
[idx
];
508 field
= &ctx_field
->event_field
;
509 ret
= specialize_load_object(field
, load
, true);
512 /* Specialize each get_symbol into a get_index. */
513 insn
->op
= FILTER_OP_GET_INDEX_U16
;
514 memset(&gid
, 0, sizeof(gid
));
516 gid
.elem
.type
= load
->object_type
;
517 data_offset
= bytecode_push_data(runtime
, &gid
,
518 __alignof__(gid
), sizeof(gid
));
519 if (data_offset
< 0) {
523 ((struct get_index_u16
*) insn
->data
)->index
= data_offset
;
530 static int specialize_payload_lookup(const struct lttng_event_desc
*event_desc
,
531 struct bytecode_runtime
*runtime
,
532 struct load_op
*insn
,
533 struct vstack_load
*load
)
537 unsigned int i
, nr_fields
;
539 uint32_t field_offset
= 0;
540 const struct lttng_event_field
*field
;
542 struct filter_get_index_data gid
;
545 nr_fields
= event_desc
->nr_fields
;
546 offset
= ((struct get_symbol
*) insn
->data
)->offset
;
547 name
= runtime
->p
.bc
->bc
.data
+ runtime
->p
.bc
->bc
.reloc_offset
+ offset
;
548 for (i
= 0; i
< nr_fields
; i
++) {
549 field
= &event_desc
->fields
[i
];
550 if (!strcmp(field
->name
, name
)) {
554 /* compute field offset on stack */
555 switch (field
->type
.atype
) {
558 field_offset
+= sizeof(int64_t);
562 field_offset
+= sizeof(unsigned long);
563 field_offset
+= sizeof(void *);
566 field_offset
+= sizeof(void *);
569 field_offset
+= sizeof(double);
581 ret
= specialize_load_object(field
, load
, false);
585 /* Specialize each get_symbol into a get_index. */
586 insn
->op
= FILTER_OP_GET_INDEX_U16
;
587 memset(&gid
, 0, sizeof(gid
));
588 gid
.offset
= field_offset
;
589 gid
.elem
.type
= load
->object_type
;
590 data_offset
= bytecode_push_data(runtime
, &gid
,
591 __alignof__(gid
), sizeof(gid
));
592 if (data_offset
< 0) {
596 ((struct get_index_u16
*) insn
->data
)->index
= data_offset
;
602 int lttng_filter_specialize_bytecode(const struct lttng_event_desc
*event_desc
,
603 struct bytecode_runtime
*bytecode
)
605 void *pc
, *next_pc
, *start_pc
;
607 struct vstack _stack
;
608 struct vstack
*stack
= &_stack
;
609 struct lttng_ctx
*ctx
= *bytecode
->p
.ctx
;
613 start_pc
= &bytecode
->code
[0];
614 for (pc
= next_pc
= start_pc
; pc
- start_pc
< bytecode
->len
;
616 switch (*(filter_opcode_t
*) pc
) {
617 case FILTER_OP_UNKNOWN
:
619 ERR("unknown bytecode op %u\n",
620 (unsigned int) *(filter_opcode_t
*) pc
);
624 case FILTER_OP_RETURN
:
625 if (vstack_ax(stack
)->type
== REG_S64
)
626 *(filter_opcode_t
*) pc
= FILTER_OP_RETURN_S64
;
630 case FILTER_OP_RETURN_S64
:
631 if (vstack_ax(stack
)->type
!= REG_S64
) {
632 ERR("Unexpected register type\n");
644 case FILTER_OP_MINUS
:
645 ERR("unsupported bytecode op %u\n",
646 (unsigned int) *(filter_opcode_t
*) pc
);
652 struct binary_op
*insn
= (struct binary_op
*) pc
;
654 switch(vstack_ax(stack
)->type
) {
656 ERR("unknown register type\n");
661 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
663 if (vstack_bx(stack
)->type
== REG_STAR_GLOB_STRING
)
664 insn
->op
= FILTER_OP_EQ_STAR_GLOB_STRING
;
666 insn
->op
= FILTER_OP_EQ_STRING
;
668 case REG_STAR_GLOB_STRING
:
669 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
671 insn
->op
= FILTER_OP_EQ_STAR_GLOB_STRING
;
674 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
676 if (vstack_bx(stack
)->type
== REG_S64
)
677 insn
->op
= FILTER_OP_EQ_S64
;
679 insn
->op
= FILTER_OP_EQ_DOUBLE_S64
;
682 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
684 if (vstack_bx(stack
)->type
== REG_S64
)
685 insn
->op
= FILTER_OP_EQ_S64_DOUBLE
;
687 insn
->op
= FILTER_OP_EQ_DOUBLE
;
690 break; /* Dynamic typing. */
693 if (vstack_pop(stack
)) {
697 vstack_ax(stack
)->type
= REG_S64
;
698 next_pc
+= sizeof(struct binary_op
);
704 struct binary_op
*insn
= (struct binary_op
*) pc
;
706 switch(vstack_ax(stack
)->type
) {
708 ERR("unknown register type\n");
713 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
715 if (vstack_bx(stack
)->type
== REG_STAR_GLOB_STRING
)
716 insn
->op
= FILTER_OP_NE_STAR_GLOB_STRING
;
718 insn
->op
= FILTER_OP_NE_STRING
;
720 case REG_STAR_GLOB_STRING
:
721 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
723 insn
->op
= FILTER_OP_NE_STAR_GLOB_STRING
;
726 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
728 if (vstack_bx(stack
)->type
== REG_S64
)
729 insn
->op
= FILTER_OP_NE_S64
;
731 insn
->op
= FILTER_OP_NE_DOUBLE_S64
;
734 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
736 if (vstack_bx(stack
)->type
== REG_S64
)
737 insn
->op
= FILTER_OP_NE_S64_DOUBLE
;
739 insn
->op
= FILTER_OP_NE_DOUBLE
;
742 break; /* Dynamic typing. */
745 if (vstack_pop(stack
)) {
749 vstack_ax(stack
)->type
= REG_S64
;
750 next_pc
+= sizeof(struct binary_op
);
756 struct binary_op
*insn
= (struct binary_op
*) pc
;
758 switch(vstack_ax(stack
)->type
) {
760 ERR("unknown register type\n");
764 case REG_STAR_GLOB_STRING
:
765 ERR("invalid register type for > binary operator\n");
769 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
771 insn
->op
= FILTER_OP_GT_STRING
;
774 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
776 if (vstack_bx(stack
)->type
== REG_S64
)
777 insn
->op
= FILTER_OP_GT_S64
;
779 insn
->op
= FILTER_OP_GT_DOUBLE_S64
;
782 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
784 if (vstack_bx(stack
)->type
== REG_S64
)
785 insn
->op
= FILTER_OP_GT_S64_DOUBLE
;
787 insn
->op
= FILTER_OP_GT_DOUBLE
;
790 break; /* Dynamic typing. */
793 if (vstack_pop(stack
)) {
797 vstack_ax(stack
)->type
= REG_S64
;
798 next_pc
+= sizeof(struct binary_op
);
804 struct binary_op
*insn
= (struct binary_op
*) pc
;
806 switch(vstack_ax(stack
)->type
) {
808 ERR("unknown register type\n");
812 case REG_STAR_GLOB_STRING
:
813 ERR("invalid register type for < binary operator\n");
817 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
819 insn
->op
= FILTER_OP_LT_STRING
;
822 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
824 if (vstack_bx(stack
)->type
== REG_S64
)
825 insn
->op
= FILTER_OP_LT_S64
;
827 insn
->op
= FILTER_OP_LT_DOUBLE_S64
;
830 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
832 if (vstack_bx(stack
)->type
== REG_S64
)
833 insn
->op
= FILTER_OP_LT_S64_DOUBLE
;
835 insn
->op
= FILTER_OP_LT_DOUBLE
;
838 break; /* Dynamic typing. */
841 if (vstack_pop(stack
)) {
845 vstack_ax(stack
)->type
= REG_S64
;
846 next_pc
+= sizeof(struct binary_op
);
852 struct binary_op
*insn
= (struct binary_op
*) pc
;
854 switch(vstack_ax(stack
)->type
) {
856 ERR("unknown register type\n");
860 case REG_STAR_GLOB_STRING
:
861 ERR("invalid register type for >= binary operator\n");
865 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
867 insn
->op
= FILTER_OP_GE_STRING
;
870 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
872 if (vstack_bx(stack
)->type
== REG_S64
)
873 insn
->op
= FILTER_OP_GE_S64
;
875 insn
->op
= FILTER_OP_GE_DOUBLE_S64
;
878 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
880 if (vstack_bx(stack
)->type
== REG_S64
)
881 insn
->op
= FILTER_OP_GE_S64_DOUBLE
;
883 insn
->op
= FILTER_OP_GE_DOUBLE
;
886 break; /* Dynamic typing. */
889 if (vstack_pop(stack
)) {
893 vstack_ax(stack
)->type
= REG_S64
;
894 next_pc
+= sizeof(struct binary_op
);
899 struct binary_op
*insn
= (struct binary_op
*) pc
;
901 switch(vstack_ax(stack
)->type
) {
903 ERR("unknown register type\n");
907 case REG_STAR_GLOB_STRING
:
908 ERR("invalid register type for <= binary operator\n");
912 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
914 insn
->op
= FILTER_OP_LE_STRING
;
917 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
919 if (vstack_bx(stack
)->type
== REG_S64
)
920 insn
->op
= FILTER_OP_LE_S64
;
922 insn
->op
= FILTER_OP_LE_DOUBLE_S64
;
925 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
927 if (vstack_bx(stack
)->type
== REG_S64
)
928 insn
->op
= FILTER_OP_LE_S64_DOUBLE
;
930 insn
->op
= FILTER_OP_LE_DOUBLE
;
933 break; /* Dynamic typing. */
935 vstack_ax(stack
)->type
= REG_S64
;
936 next_pc
+= sizeof(struct binary_op
);
940 case FILTER_OP_EQ_STRING
:
941 case FILTER_OP_NE_STRING
:
942 case FILTER_OP_GT_STRING
:
943 case FILTER_OP_LT_STRING
:
944 case FILTER_OP_GE_STRING
:
945 case FILTER_OP_LE_STRING
:
946 case FILTER_OP_EQ_STAR_GLOB_STRING
:
947 case FILTER_OP_NE_STAR_GLOB_STRING
:
948 case FILTER_OP_EQ_S64
:
949 case FILTER_OP_NE_S64
:
950 case FILTER_OP_GT_S64
:
951 case FILTER_OP_LT_S64
:
952 case FILTER_OP_GE_S64
:
953 case FILTER_OP_LE_S64
:
954 case FILTER_OP_EQ_DOUBLE
:
955 case FILTER_OP_NE_DOUBLE
:
956 case FILTER_OP_GT_DOUBLE
:
957 case FILTER_OP_LT_DOUBLE
:
958 case FILTER_OP_GE_DOUBLE
:
959 case FILTER_OP_LE_DOUBLE
:
960 case FILTER_OP_EQ_DOUBLE_S64
:
961 case FILTER_OP_NE_DOUBLE_S64
:
962 case FILTER_OP_GT_DOUBLE_S64
:
963 case FILTER_OP_LT_DOUBLE_S64
:
964 case FILTER_OP_GE_DOUBLE_S64
:
965 case FILTER_OP_LE_DOUBLE_S64
:
966 case FILTER_OP_EQ_S64_DOUBLE
:
967 case FILTER_OP_NE_S64_DOUBLE
:
968 case FILTER_OP_GT_S64_DOUBLE
:
969 case FILTER_OP_LT_S64_DOUBLE
:
970 case FILTER_OP_GE_S64_DOUBLE
:
971 case FILTER_OP_LE_S64_DOUBLE
:
972 case FILTER_OP_BIT_RSHIFT
:
973 case FILTER_OP_BIT_LSHIFT
:
974 case FILTER_OP_BIT_AND
:
975 case FILTER_OP_BIT_OR
:
976 case FILTER_OP_BIT_XOR
:
979 if (vstack_pop(stack
)) {
983 vstack_ax(stack
)->type
= REG_S64
;
984 next_pc
+= sizeof(struct binary_op
);
989 case FILTER_OP_UNARY_PLUS
:
991 struct unary_op
*insn
= (struct unary_op
*) pc
;
993 switch(vstack_ax(stack
)->type
) {
995 ERR("unknown register type\n");
1000 insn
->op
= FILTER_OP_UNARY_PLUS_S64
;
1003 insn
->op
= FILTER_OP_UNARY_PLUS_DOUBLE
;
1005 case REG_UNKNOWN
: /* Dynamic typing. */
1009 next_pc
+= sizeof(struct unary_op
);
1013 case FILTER_OP_UNARY_MINUS
:
1015 struct unary_op
*insn
= (struct unary_op
*) pc
;
1017 switch(vstack_ax(stack
)->type
) {
1019 ERR("unknown register type\n");
1024 insn
->op
= FILTER_OP_UNARY_MINUS_S64
;
1027 insn
->op
= FILTER_OP_UNARY_MINUS_DOUBLE
;
1029 case REG_UNKNOWN
: /* Dynamic typing. */
1033 next_pc
+= sizeof(struct unary_op
);
1037 case FILTER_OP_UNARY_NOT
:
1039 struct unary_op
*insn
= (struct unary_op
*) pc
;
1041 switch(vstack_ax(stack
)->type
) {
1043 ERR("unknown register type\n");
1048 insn
->op
= FILTER_OP_UNARY_NOT_S64
;
1051 insn
->op
= FILTER_OP_UNARY_NOT_DOUBLE
;
1053 case REG_UNKNOWN
: /* Dynamic typing. */
1057 next_pc
+= sizeof(struct unary_op
);
1061 case FILTER_OP_UNARY_BIT_NOT
:
1064 next_pc
+= sizeof(struct unary_op
);
1068 case FILTER_OP_UNARY_PLUS_S64
:
1069 case FILTER_OP_UNARY_MINUS_S64
:
1070 case FILTER_OP_UNARY_NOT_S64
:
1071 case FILTER_OP_UNARY_PLUS_DOUBLE
:
1072 case FILTER_OP_UNARY_MINUS_DOUBLE
:
1073 case FILTER_OP_UNARY_NOT_DOUBLE
:
1076 next_pc
+= sizeof(struct unary_op
);
1084 /* Continue to next instruction */
1085 /* Pop 1 when jump not taken */
1086 if (vstack_pop(stack
)) {
1090 next_pc
+= sizeof(struct logical_op
);
1094 /* load field ref */
1095 case FILTER_OP_LOAD_FIELD_REF
:
1097 ERR("Unknown field ref type\n");
1101 /* get context ref */
1102 case FILTER_OP_GET_CONTEXT_REF
:
1104 if (vstack_push(stack
)) {
1108 vstack_ax(stack
)->type
= REG_UNKNOWN
;
1109 next_pc
+= sizeof(struct load_op
) + sizeof(struct field_ref
);
1112 case FILTER_OP_LOAD_FIELD_REF_STRING
:
1113 case FILTER_OP_LOAD_FIELD_REF_SEQUENCE
:
1114 case FILTER_OP_GET_CONTEXT_REF_STRING
:
1116 if (vstack_push(stack
)) {
1120 vstack_ax(stack
)->type
= REG_STRING
;
1121 next_pc
+= sizeof(struct load_op
) + sizeof(struct field_ref
);
1124 case FILTER_OP_LOAD_FIELD_REF_S64
:
1125 case FILTER_OP_GET_CONTEXT_REF_S64
:
1127 if (vstack_push(stack
)) {
1131 vstack_ax(stack
)->type
= REG_S64
;
1132 next_pc
+= sizeof(struct load_op
) + sizeof(struct field_ref
);
1135 case FILTER_OP_LOAD_FIELD_REF_DOUBLE
:
1136 case FILTER_OP_GET_CONTEXT_REF_DOUBLE
:
1138 if (vstack_push(stack
)) {
1142 vstack_ax(stack
)->type
= REG_DOUBLE
;
1143 next_pc
+= sizeof(struct load_op
) + sizeof(struct field_ref
);
1147 /* load from immediate operand */
1148 case FILTER_OP_LOAD_STRING
:
1150 struct load_op
*insn
= (struct load_op
*) pc
;
1152 if (vstack_push(stack
)) {
1156 vstack_ax(stack
)->type
= REG_STRING
;
1157 next_pc
+= sizeof(struct load_op
) + strlen(insn
->data
) + 1;
1161 case FILTER_OP_LOAD_STAR_GLOB_STRING
:
1163 struct load_op
*insn
= (struct load_op
*) pc
;
1165 if (vstack_push(stack
)) {
1169 vstack_ax(stack
)->type
= REG_STAR_GLOB_STRING
;
1170 next_pc
+= sizeof(struct load_op
) + strlen(insn
->data
) + 1;
1174 case FILTER_OP_LOAD_S64
:
1176 if (vstack_push(stack
)) {
1180 vstack_ax(stack
)->type
= REG_S64
;
1181 next_pc
+= sizeof(struct load_op
)
1182 + sizeof(struct literal_numeric
);
1186 case FILTER_OP_LOAD_DOUBLE
:
1188 if (vstack_push(stack
)) {
1192 vstack_ax(stack
)->type
= REG_DOUBLE
;
1193 next_pc
+= sizeof(struct load_op
)
1194 + sizeof(struct literal_double
);
1199 case FILTER_OP_CAST_TO_S64
:
1201 struct cast_op
*insn
= (struct cast_op
*) pc
;
1203 switch (vstack_ax(stack
)->type
) {
1205 ERR("unknown register type\n");
1210 case REG_STAR_GLOB_STRING
:
1211 ERR("Cast op can only be applied to numeric or floating point registers\n");
1215 insn
->op
= FILTER_OP_CAST_NOP
;
1218 insn
->op
= FILTER_OP_CAST_DOUBLE_TO_S64
;
1224 vstack_ax(stack
)->type
= REG_S64
;
1225 next_pc
+= sizeof(struct cast_op
);
1228 case FILTER_OP_CAST_DOUBLE_TO_S64
:
1231 vstack_ax(stack
)->type
= REG_S64
;
1232 next_pc
+= sizeof(struct cast_op
);
1235 case FILTER_OP_CAST_NOP
:
1237 next_pc
+= sizeof(struct cast_op
);
1242 * Instructions for recursive traversal through composed types.
1244 case FILTER_OP_GET_CONTEXT_ROOT
:
1246 if (vstack_push(stack
)) {
1250 vstack_ax(stack
)->type
= REG_PTR
;
1251 vstack_ax(stack
)->load
.type
= LOAD_ROOT_CONTEXT
;
1252 next_pc
+= sizeof(struct load_op
);
1255 case FILTER_OP_GET_APP_CONTEXT_ROOT
:
1257 if (vstack_push(stack
)) {
1261 vstack_ax(stack
)->type
= REG_PTR
;
1262 vstack_ax(stack
)->load
.type
= LOAD_ROOT_APP_CONTEXT
;
1263 next_pc
+= sizeof(struct load_op
);
1266 case FILTER_OP_GET_PAYLOAD_ROOT
:
1268 if (vstack_push(stack
)) {
1272 vstack_ax(stack
)->type
= REG_PTR
;
1273 vstack_ax(stack
)->load
.type
= LOAD_ROOT_PAYLOAD
;
1274 next_pc
+= sizeof(struct load_op
);
1278 case FILTER_OP_LOAD_FIELD
:
1280 struct load_op
*insn
= (struct load_op
*) pc
;
1282 assert(vstack_ax(stack
)->type
== REG_PTR
);
1284 ret
= specialize_load_field(vstack_ax(stack
), insn
);
1288 next_pc
+= sizeof(struct load_op
);
1292 case FILTER_OP_LOAD_FIELD_S8
:
1293 case FILTER_OP_LOAD_FIELD_S16
:
1294 case FILTER_OP_LOAD_FIELD_S32
:
1295 case FILTER_OP_LOAD_FIELD_S64
:
1296 case FILTER_OP_LOAD_FIELD_U8
:
1297 case FILTER_OP_LOAD_FIELD_U16
:
1298 case FILTER_OP_LOAD_FIELD_U32
:
1299 case FILTER_OP_LOAD_FIELD_U64
:
1302 vstack_ax(stack
)->type
= REG_S64
;
1303 next_pc
+= sizeof(struct load_op
);
1307 case FILTER_OP_LOAD_FIELD_STRING
:
1308 case FILTER_OP_LOAD_FIELD_SEQUENCE
:
1311 vstack_ax(stack
)->type
= REG_STRING
;
1312 next_pc
+= sizeof(struct load_op
);
1316 case FILTER_OP_LOAD_FIELD_DOUBLE
:
1319 vstack_ax(stack
)->type
= REG_DOUBLE
;
1320 next_pc
+= sizeof(struct load_op
);
1324 case FILTER_OP_GET_SYMBOL
:
1326 struct load_op
*insn
= (struct load_op
*) pc
;
1328 dbg_printf("op get symbol\n");
1329 switch (vstack_ax(stack
)->load
.type
) {
1331 ERR("Nested fields not implemented yet.");
1334 case LOAD_ROOT_CONTEXT
:
1335 /* Lookup context field. */
1336 ret
= specialize_context_lookup(ctx
,
1338 &vstack_ax(stack
)->load
);
1342 case LOAD_ROOT_APP_CONTEXT
:
1343 /* Lookup app context field. */
1344 ret
= specialize_app_context_lookup(ctx
,
1346 &vstack_ax(stack
)->load
);
1350 case LOAD_ROOT_PAYLOAD
:
1351 /* Lookup event payload field. */
1352 ret
= specialize_payload_lookup(event_desc
,
1354 &vstack_ax(stack
)->load
);
1359 next_pc
+= sizeof(struct load_op
) + sizeof(struct get_symbol
);
1363 case FILTER_OP_GET_SYMBOL_FIELD
:
1365 /* Always generated by specialize phase. */
1370 case FILTER_OP_GET_INDEX_U16
:
1372 struct load_op
*insn
= (struct load_op
*) pc
;
1373 struct get_index_u16
*index
= (struct get_index_u16
*) insn
->data
;
1375 dbg_printf("op get index u16\n");
1377 ret
= specialize_get_index(bytecode
, insn
, index
->index
,
1378 vstack_ax(stack
), sizeof(*index
));
1381 next_pc
+= sizeof(struct load_op
) + sizeof(struct get_index_u16
);
1385 case FILTER_OP_GET_INDEX_U64
:
1387 struct load_op
*insn
= (struct load_op
*) pc
;
1388 struct get_index_u64
*index
= (struct get_index_u64
*) insn
->data
;
1390 dbg_printf("op get index u64\n");
1392 ret
= specialize_get_index(bytecode
, insn
, index
->index
,
1393 vstack_ax(stack
), sizeof(*index
));
1396 next_pc
+= sizeof(struct load_op
) + sizeof(struct get_index_u64
);