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
28 #include "lttng-filter.h"
29 #include <lttng/align.h>
31 static int lttng_fls(int val
)
34 unsigned int x
= (unsigned int) val
;
38 if (!(x
& 0xFFFF0000U
)) {
42 if (!(x
& 0xFF000000U
)) {
46 if (!(x
& 0xF0000000U
)) {
50 if (!(x
& 0xC0000000U
)) {
54 if (!(x
& 0x80000000U
)) {
60 static int get_count_order(unsigned int count
)
64 order
= lttng_fls(count
) - 1;
65 if (count
& (count
- 1))
70 static ssize_t
bytecode_reserve_data(struct bytecode_runtime
*runtime
,
71 size_t align
, size_t len
)
74 size_t padding
= offset_align(runtime
->data_len
, align
);
75 size_t new_len
= runtime
->data_len
+ padding
+ len
;
76 size_t new_alloc_len
= new_len
;
77 size_t old_alloc_len
= runtime
->data_alloc_len
;
79 if (new_len
> FILTER_MAX_DATA_LEN
)
82 if (new_alloc_len
> old_alloc_len
) {
86 max_t(size_t, 1U << get_count_order(new_alloc_len
), old_alloc_len
<< 1);
87 newptr
= realloc(runtime
->data
, new_alloc_len
);
90 runtime
->data
= newptr
;
91 /* We zero directly the memory from start of allocation. */
92 memset(&runtime
->data
[old_alloc_len
], 0, new_alloc_len
- old_alloc_len
);
93 runtime
->data_alloc_len
= new_alloc_len
;
95 runtime
->data_len
+= padding
;
96 ret
= runtime
->data_len
;
97 runtime
->data_len
+= len
;
101 static ssize_t
bytecode_push_data(struct bytecode_runtime
*runtime
,
102 const void *p
, size_t align
, size_t len
)
106 offset
= bytecode_reserve_data(runtime
, align
, len
);
109 memcpy(&runtime
->data
[offset
], p
, len
);
113 static int specialize_load_field(struct vstack_entry
*stack_top
,
114 struct load_op
*insn
)
118 switch (stack_top
->load
.type
) {
121 case LOAD_ROOT_CONTEXT
:
122 case LOAD_ROOT_APP_CONTEXT
:
123 case LOAD_ROOT_PAYLOAD
:
125 dbg_printf("Filter warning: cannot load root, missing field name.\n");
129 switch (stack_top
->load
.object_type
) {
131 dbg_printf("op load field s8\n");
132 stack_top
->type
= REG_S64
;
133 if (!stack_top
->load
.rev_bo
)
134 insn
->op
= FILTER_OP_LOAD_FIELD_S8
;
136 case OBJECT_TYPE_S16
:
137 dbg_printf("op load field s16\n");
138 stack_top
->type
= REG_S64
;
139 if (!stack_top
->load
.rev_bo
)
140 insn
->op
= FILTER_OP_LOAD_FIELD_S16
;
142 case OBJECT_TYPE_S32
:
143 dbg_printf("op load field s32\n");
144 stack_top
->type
= REG_S64
;
145 if (!stack_top
->load
.rev_bo
)
146 insn
->op
= FILTER_OP_LOAD_FIELD_S32
;
148 case OBJECT_TYPE_S64
:
149 dbg_printf("op load field s64\n");
150 stack_top
->type
= REG_S64
;
151 if (!stack_top
->load
.rev_bo
)
152 insn
->op
= FILTER_OP_LOAD_FIELD_S64
;
155 dbg_printf("op load field u8\n");
156 stack_top
->type
= REG_S64
;
157 insn
->op
= FILTER_OP_LOAD_FIELD_U8
;
159 case OBJECT_TYPE_U16
:
160 dbg_printf("op load field u16\n");
161 stack_top
->type
= REG_S64
;
162 if (!stack_top
->load
.rev_bo
)
163 insn
->op
= FILTER_OP_LOAD_FIELD_U16
;
165 case OBJECT_TYPE_U32
:
166 dbg_printf("op load field u32\n");
167 stack_top
->type
= REG_S64
;
168 if (!stack_top
->load
.rev_bo
)
169 insn
->op
= FILTER_OP_LOAD_FIELD_U32
;
171 case OBJECT_TYPE_U64
:
172 dbg_printf("op load field u64\n");
173 stack_top
->type
= REG_S64
;
174 if (!stack_top
->load
.rev_bo
)
175 insn
->op
= FILTER_OP_LOAD_FIELD_U64
;
177 case OBJECT_TYPE_DOUBLE
:
178 stack_top
->type
= REG_DOUBLE
;
179 insn
->op
= FILTER_OP_LOAD_FIELD_DOUBLE
;
181 case OBJECT_TYPE_STRING
:
182 dbg_printf("op load field string\n");
183 stack_top
->type
= REG_STRING
;
184 insn
->op
= FILTER_OP_LOAD_FIELD_STRING
;
186 case OBJECT_TYPE_STRING_SEQUENCE
:
187 dbg_printf("op load field string sequence\n");
188 stack_top
->type
= REG_STRING
;
189 insn
->op
= FILTER_OP_LOAD_FIELD_SEQUENCE
;
191 case OBJECT_TYPE_DYNAMIC
:
192 dbg_printf("op load field dynamic\n");
193 stack_top
->type
= REG_UNKNOWN
;
194 /* Don't specialize load op. */
196 case OBJECT_TYPE_SEQUENCE
:
197 case OBJECT_TYPE_ARRAY
:
198 case OBJECT_TYPE_STRUCT
:
199 case OBJECT_TYPE_VARIANT
:
200 ERR("Sequences, arrays, struct and variant cannot be loaded (nested types).");
210 static int specialize_get_index_object_type(enum object_type
*otype
,
211 int signedness
, uint32_t elem_len
)
216 *otype
= OBJECT_TYPE_S8
;
218 *otype
= OBJECT_TYPE_U8
;
222 *otype
= OBJECT_TYPE_S16
;
224 *otype
= OBJECT_TYPE_U16
;
228 *otype
= OBJECT_TYPE_S32
;
230 *otype
= OBJECT_TYPE_U32
;
234 *otype
= OBJECT_TYPE_S64
;
236 *otype
= OBJECT_TYPE_U64
;
244 static int specialize_get_index(struct bytecode_runtime
*runtime
,
245 struct load_op
*insn
, uint64_t index
,
246 struct vstack_entry
*stack_top
,
250 struct filter_get_index_data gid
;
253 memset(&gid
, 0, sizeof(gid
));
254 switch (stack_top
->load
.type
) {
256 switch (stack_top
->load
.object_type
) {
257 case OBJECT_TYPE_ARRAY
:
259 const struct lttng_event_field
*field
;
260 uint32_t elem_len
, num_elems
;
263 field
= stack_top
->load
.field
;
264 elem_len
= field
->type
.u
.array
.elem_type
.u
.basic
.integer
.size
;
265 signedness
= field
->type
.u
.array
.elem_type
.u
.basic
.integer
.signedness
;
266 num_elems
= field
->type
.u
.array
.length
;
267 if (index
>= num_elems
) {
271 ret
= specialize_get_index_object_type(&stack_top
->load
.object_type
,
272 signedness
, elem_len
);
275 gid
.offset
= index
* (elem_len
/ CHAR_BIT
);
276 gid
.array_len
= num_elems
* (elem_len
/ CHAR_BIT
);
277 gid
.elem
.type
= stack_top
->load
.object_type
;
278 gid
.elem
.len
= elem_len
;
279 if (field
->type
.u
.array
.elem_type
.u
.basic
.integer
.reverse_byte_order
)
280 gid
.elem
.rev_bo
= true;
281 stack_top
->load
.rev_bo
= gid
.elem
.rev_bo
;
284 case OBJECT_TYPE_SEQUENCE
:
286 const struct lttng_event_field
*field
;
290 field
= stack_top
->load
.field
;
291 elem_len
= field
->type
.u
.sequence
.elem_type
.u
.basic
.integer
.size
;
292 signedness
= field
->type
.u
.sequence
.elem_type
.u
.basic
.integer
.signedness
;
293 ret
= specialize_get_index_object_type(&stack_top
->load
.object_type
,
294 signedness
, elem_len
);
297 gid
.offset
= index
* (elem_len
/ CHAR_BIT
);
298 gid
.elem
.type
= stack_top
->load
.object_type
;
299 gid
.elem
.len
= elem_len
;
300 if (field
->type
.u
.sequence
.elem_type
.u
.basic
.integer
.reverse_byte_order
)
301 gid
.elem
.rev_bo
= true;
302 stack_top
->load
.rev_bo
= gid
.elem
.rev_bo
;
305 case OBJECT_TYPE_STRUCT
:
306 /* Only generated by the specialize phase. */
307 case OBJECT_TYPE_VARIANT
: /* Fall-through */
309 ERR("Unexpected get index type %d",
310 (int) stack_top
->load
.object_type
);
315 case LOAD_ROOT_CONTEXT
:
316 case LOAD_ROOT_APP_CONTEXT
:
317 case LOAD_ROOT_PAYLOAD
:
318 ERR("Index lookup for root field not implemented yet.");
322 data_offset
= bytecode_push_data(runtime
, &gid
,
323 __alignof__(gid
), sizeof(gid
));
324 if (data_offset
< 0) {
330 ((struct get_index_u16
*) insn
->data
)->index
= data_offset
;
333 ((struct get_index_u64
*) insn
->data
)->index
= data_offset
;
346 static int specialize_context_lookup_name(struct lttng_ctx
*ctx
,
347 struct bytecode_runtime
*bytecode
,
348 struct load_op
*insn
)
353 offset
= ((struct get_symbol
*) insn
->data
)->offset
;
354 name
= bytecode
->p
.bc
->bc
.data
+ bytecode
->p
.bc
->bc
.reloc_offset
+ offset
;
355 return lttng_get_context_index(ctx
, name
);
358 static int specialize_load_object(const struct lttng_event_field
*field
,
359 struct vstack_load
*load
, bool is_context
)
361 load
->type
= LOAD_OBJECT
;
363 * LTTng-UST layout all integer fields as s64 on the stack for the filter.
365 switch (field
->type
.atype
) {
367 if (field
->type
.u
.basic
.integer
.signedness
)
368 load
->object_type
= OBJECT_TYPE_S64
;
370 load
->object_type
= OBJECT_TYPE_U64
;
371 load
->rev_bo
= false;
375 const struct lttng_integer_type
*itype
=
376 &field
->type
.u
.basic
.enumeration
.container_type
;
378 if (itype
->signedness
)
379 load
->object_type
= OBJECT_TYPE_S64
;
381 load
->object_type
= OBJECT_TYPE_U64
;
382 load
->rev_bo
= false;
386 if (field
->type
.u
.array
.elem_type
.atype
!= atype_integer
) {
387 ERR("Array nesting only supports integer types.");
391 load
->object_type
= OBJECT_TYPE_STRING
;
393 if (field
->type
.u
.array
.elem_type
.u
.basic
.integer
.encoding
== lttng_encode_none
) {
394 load
->object_type
= OBJECT_TYPE_ARRAY
;
397 load
->object_type
= OBJECT_TYPE_STRING_SEQUENCE
;
402 if (field
->type
.u
.sequence
.elem_type
.atype
!= atype_integer
) {
403 ERR("Sequence nesting only supports integer types.");
407 load
->object_type
= OBJECT_TYPE_STRING
;
409 if (field
->type
.u
.sequence
.elem_type
.u
.basic
.integer
.encoding
== lttng_encode_none
) {
410 load
->object_type
= OBJECT_TYPE_SEQUENCE
;
413 load
->object_type
= OBJECT_TYPE_STRING_SEQUENCE
;
418 load
->object_type
= OBJECT_TYPE_STRING
;
421 load
->object_type
= OBJECT_TYPE_DOUBLE
;
424 load
->object_type
= OBJECT_TYPE_DYNAMIC
;
427 ERR("Structure type cannot be loaded.");
430 ERR("Unknown type: %d", (int) field
->type
.atype
);
436 static int specialize_context_lookup(struct lttng_session
*session
,
437 struct bytecode_runtime
*runtime
,
438 struct load_op
*insn
,
439 struct vstack_load
*load
)
442 struct lttng_ctx_field
*ctx_field
;
443 struct lttng_event_field
*field
;
444 struct filter_get_index_data gid
;
447 idx
= specialize_context_lookup_name(session
->ctx
, runtime
, insn
);
451 ctx_field
= &session
->ctx
->fields
[idx
];
452 field
= &ctx_field
->event_field
;
453 ret
= specialize_load_object(field
, load
, true);
456 /* Specialize each get_symbol into a get_index. */
457 insn
->op
= FILTER_OP_GET_INDEX_U16
;
458 memset(&gid
, 0, sizeof(gid
));
460 gid
.elem
.type
= load
->object_type
;
461 data_offset
= bytecode_push_data(runtime
, &gid
,
462 __alignof__(gid
), sizeof(gid
));
463 if (data_offset
< 0) {
466 ((struct get_index_u16
*) insn
->data
)->index
= data_offset
;
470 static int specialize_app_context_lookup(struct lttng_session
*session
,
471 struct bytecode_runtime
*runtime
,
472 struct load_op
*insn
,
473 struct vstack_load
*load
)
476 const char *orig_name
;
479 struct lttng_ctx_field
*ctx_field
;
480 struct lttng_event_field
*field
;
481 struct filter_get_index_data gid
;
484 offset
= ((struct get_symbol
*) insn
->data
)->offset
;
485 orig_name
= runtime
->p
.bc
->bc
.data
+ runtime
->p
.bc
->bc
.reloc_offset
+ offset
;
486 name
= zmalloc(strlen(orig_name
) + strlen("$app.") + 1);
491 strcpy(name
, "$app.");
492 strcat(name
, orig_name
);
493 idx
= lttng_get_context_index(session
->ctx
, name
);
495 assert(lttng_context_is_app(name
));
496 ret
= lttng_ust_add_app_context_to_ctx_rcu(name
,
500 idx
= lttng_get_context_index(session
->ctx
,
505 ctx_field
= &session
->ctx
->fields
[idx
];
506 field
= &ctx_field
->event_field
;
507 ret
= specialize_load_object(field
, load
, true);
510 /* Specialize each get_symbol into a get_index. */
511 insn
->op
= FILTER_OP_GET_INDEX_U16
;
512 memset(&gid
, 0, sizeof(gid
));
514 gid
.elem
.type
= load
->object_type
;
515 data_offset
= bytecode_push_data(runtime
, &gid
,
516 __alignof__(gid
), sizeof(gid
));
517 if (data_offset
< 0) {
521 ((struct get_index_u16
*) insn
->data
)->index
= data_offset
;
528 static int specialize_event_payload_lookup(struct lttng_event
*event
,
529 struct bytecode_runtime
*runtime
,
530 struct load_op
*insn
,
531 struct vstack_load
*load
)
535 const struct lttng_event_desc
*desc
= event
->desc
;
536 unsigned int i
, nr_fields
;
538 uint32_t field_offset
= 0;
539 const struct lttng_event_field
*field
;
541 struct filter_get_index_data gid
;
544 nr_fields
= desc
->nr_fields
;
545 offset
= ((struct get_symbol
*) insn
->data
)->offset
;
546 name
= runtime
->p
.bc
->bc
.data
+ runtime
->p
.bc
->bc
.reloc_offset
+ offset
;
547 for (i
= 0; i
< nr_fields
; i
++) {
548 field
= &desc
->fields
[i
];
549 if (!strcmp(field
->name
, name
)) {
553 /* compute field offset on stack */
554 switch (field
->type
.atype
) {
557 field_offset
+= sizeof(int64_t);
561 field_offset
+= sizeof(unsigned long);
562 field_offset
+= sizeof(void *);
565 field_offset
+= sizeof(void *);
568 field_offset
+= sizeof(double);
580 ret
= specialize_load_object(field
, load
, false);
584 /* Specialize each get_symbol into a get_index. */
585 insn
->op
= FILTER_OP_GET_INDEX_U16
;
586 memset(&gid
, 0, sizeof(gid
));
587 gid
.offset
= field_offset
;
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
;
601 int lttng_filter_specialize_bytecode(struct lttng_event
*event
,
602 struct bytecode_runtime
*bytecode
)
604 void *pc
, *next_pc
, *start_pc
;
606 struct vstack _stack
;
607 struct vstack
*stack
= &_stack
;
608 struct lttng_session
*session
= bytecode
->p
.session
;
612 start_pc
= &bytecode
->code
[0];
613 for (pc
= next_pc
= start_pc
; pc
- start_pc
< bytecode
->len
;
615 switch (*(filter_opcode_t
*) pc
) {
616 case FILTER_OP_UNKNOWN
:
618 ERR("unknown bytecode op %u\n",
619 (unsigned int) *(filter_opcode_t
*) pc
);
623 case FILTER_OP_RETURN
:
632 case FILTER_OP_MINUS
:
633 case FILTER_OP_RSHIFT
:
634 case FILTER_OP_LSHIFT
:
635 ERR("unsupported bytecode op %u\n",
636 (unsigned int) *(filter_opcode_t
*) pc
);
642 struct binary_op
*insn
= (struct binary_op
*) pc
;
644 switch(vstack_ax(stack
)->type
) {
646 ERR("unknown register type\n");
651 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
653 if (vstack_bx(stack
)->type
== REG_STAR_GLOB_STRING
)
654 insn
->op
= FILTER_OP_EQ_STAR_GLOB_STRING
;
656 insn
->op
= FILTER_OP_EQ_STRING
;
658 case REG_STAR_GLOB_STRING
:
659 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
661 insn
->op
= FILTER_OP_EQ_STAR_GLOB_STRING
;
664 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
666 if (vstack_bx(stack
)->type
== REG_S64
)
667 insn
->op
= FILTER_OP_EQ_S64
;
669 insn
->op
= FILTER_OP_EQ_DOUBLE_S64
;
672 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
674 if (vstack_bx(stack
)->type
== REG_S64
)
675 insn
->op
= FILTER_OP_EQ_S64_DOUBLE
;
677 insn
->op
= FILTER_OP_EQ_DOUBLE
;
680 break; /* Dynamic typing. */
683 if (vstack_pop(stack
)) {
687 vstack_ax(stack
)->type
= REG_S64
;
688 next_pc
+= sizeof(struct binary_op
);
694 struct binary_op
*insn
= (struct binary_op
*) pc
;
696 switch(vstack_ax(stack
)->type
) {
698 ERR("unknown register type\n");
703 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
705 if (vstack_bx(stack
)->type
== REG_STAR_GLOB_STRING
)
706 insn
->op
= FILTER_OP_NE_STAR_GLOB_STRING
;
708 insn
->op
= FILTER_OP_NE_STRING
;
710 case REG_STAR_GLOB_STRING
:
711 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
713 insn
->op
= FILTER_OP_NE_STAR_GLOB_STRING
;
716 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
718 if (vstack_bx(stack
)->type
== REG_S64
)
719 insn
->op
= FILTER_OP_NE_S64
;
721 insn
->op
= FILTER_OP_NE_DOUBLE_S64
;
724 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
726 if (vstack_bx(stack
)->type
== REG_S64
)
727 insn
->op
= FILTER_OP_NE_S64_DOUBLE
;
729 insn
->op
= FILTER_OP_NE_DOUBLE
;
732 break; /* Dynamic typing. */
735 if (vstack_pop(stack
)) {
739 vstack_ax(stack
)->type
= REG_S64
;
740 next_pc
+= sizeof(struct binary_op
);
746 struct binary_op
*insn
= (struct binary_op
*) pc
;
748 switch(vstack_ax(stack
)->type
) {
750 ERR("unknown register type\n");
754 case REG_STAR_GLOB_STRING
:
755 ERR("invalid register type for > binary operator\n");
759 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
761 insn
->op
= FILTER_OP_GT_STRING
;
764 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
766 if (vstack_bx(stack
)->type
== REG_S64
)
767 insn
->op
= FILTER_OP_GT_S64
;
769 insn
->op
= FILTER_OP_GT_DOUBLE_S64
;
772 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
774 if (vstack_bx(stack
)->type
== REG_S64
)
775 insn
->op
= FILTER_OP_GT_S64_DOUBLE
;
777 insn
->op
= FILTER_OP_GT_DOUBLE
;
780 break; /* Dynamic typing. */
783 if (vstack_pop(stack
)) {
787 vstack_ax(stack
)->type
= REG_S64
;
788 next_pc
+= sizeof(struct binary_op
);
794 struct binary_op
*insn
= (struct binary_op
*) pc
;
796 switch(vstack_ax(stack
)->type
) {
798 ERR("unknown register type\n");
802 case REG_STAR_GLOB_STRING
:
803 ERR("invalid register type for < binary operator\n");
807 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
809 insn
->op
= FILTER_OP_LT_STRING
;
812 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
814 if (vstack_bx(stack
)->type
== REG_S64
)
815 insn
->op
= FILTER_OP_LT_S64
;
817 insn
->op
= FILTER_OP_LT_DOUBLE_S64
;
820 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
822 if (vstack_bx(stack
)->type
== REG_S64
)
823 insn
->op
= FILTER_OP_LT_S64_DOUBLE
;
825 insn
->op
= FILTER_OP_LT_DOUBLE
;
828 break; /* Dynamic typing. */
831 if (vstack_pop(stack
)) {
835 vstack_ax(stack
)->type
= REG_S64
;
836 next_pc
+= sizeof(struct binary_op
);
842 struct binary_op
*insn
= (struct binary_op
*) pc
;
844 switch(vstack_ax(stack
)->type
) {
846 ERR("unknown register type\n");
850 case REG_STAR_GLOB_STRING
:
851 ERR("invalid register type for >= binary operator\n");
855 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
857 insn
->op
= FILTER_OP_GE_STRING
;
860 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
862 if (vstack_bx(stack
)->type
== REG_S64
)
863 insn
->op
= FILTER_OP_GE_S64
;
865 insn
->op
= FILTER_OP_GE_DOUBLE_S64
;
868 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
870 if (vstack_bx(stack
)->type
== REG_S64
)
871 insn
->op
= FILTER_OP_GE_S64_DOUBLE
;
873 insn
->op
= FILTER_OP_GE_DOUBLE
;
876 break; /* Dynamic typing. */
879 if (vstack_pop(stack
)) {
883 vstack_ax(stack
)->type
= REG_S64
;
884 next_pc
+= sizeof(struct binary_op
);
889 struct binary_op
*insn
= (struct binary_op
*) pc
;
891 switch(vstack_ax(stack
)->type
) {
893 ERR("unknown register type\n");
897 case REG_STAR_GLOB_STRING
:
898 ERR("invalid register type for <= binary operator\n");
902 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
904 insn
->op
= FILTER_OP_LE_STRING
;
907 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
909 if (vstack_bx(stack
)->type
== REG_S64
)
910 insn
->op
= FILTER_OP_LE_S64
;
912 insn
->op
= FILTER_OP_LE_DOUBLE_S64
;
915 if (vstack_bx(stack
)->type
== REG_UNKNOWN
)
917 if (vstack_bx(stack
)->type
== REG_S64
)
918 insn
->op
= FILTER_OP_LE_S64_DOUBLE
;
920 insn
->op
= FILTER_OP_LE_DOUBLE
;
923 break; /* Dynamic typing. */
925 vstack_ax(stack
)->type
= REG_S64
;
926 next_pc
+= sizeof(struct binary_op
);
930 case FILTER_OP_EQ_STRING
:
931 case FILTER_OP_NE_STRING
:
932 case FILTER_OP_GT_STRING
:
933 case FILTER_OP_LT_STRING
:
934 case FILTER_OP_GE_STRING
:
935 case FILTER_OP_LE_STRING
:
936 case FILTER_OP_EQ_STAR_GLOB_STRING
:
937 case FILTER_OP_NE_STAR_GLOB_STRING
:
938 case FILTER_OP_EQ_S64
:
939 case FILTER_OP_NE_S64
:
940 case FILTER_OP_GT_S64
:
941 case FILTER_OP_LT_S64
:
942 case FILTER_OP_GE_S64
:
943 case FILTER_OP_LE_S64
:
944 case FILTER_OP_EQ_DOUBLE
:
945 case FILTER_OP_NE_DOUBLE
:
946 case FILTER_OP_GT_DOUBLE
:
947 case FILTER_OP_LT_DOUBLE
:
948 case FILTER_OP_GE_DOUBLE
:
949 case FILTER_OP_LE_DOUBLE
:
950 case FILTER_OP_EQ_DOUBLE_S64
:
951 case FILTER_OP_NE_DOUBLE_S64
:
952 case FILTER_OP_GT_DOUBLE_S64
:
953 case FILTER_OP_LT_DOUBLE_S64
:
954 case FILTER_OP_GE_DOUBLE_S64
:
955 case FILTER_OP_LE_DOUBLE_S64
:
956 case FILTER_OP_EQ_S64_DOUBLE
:
957 case FILTER_OP_NE_S64_DOUBLE
:
958 case FILTER_OP_GT_S64_DOUBLE
:
959 case FILTER_OP_LT_S64_DOUBLE
:
960 case FILTER_OP_GE_S64_DOUBLE
:
961 case FILTER_OP_LE_S64_DOUBLE
:
962 case FILTER_OP_BIT_AND
:
963 case FILTER_OP_BIT_OR
:
964 case FILTER_OP_BIT_XOR
:
967 if (vstack_pop(stack
)) {
971 vstack_ax(stack
)->type
= REG_S64
;
972 next_pc
+= sizeof(struct binary_op
);
977 case FILTER_OP_UNARY_PLUS
:
979 struct unary_op
*insn
= (struct unary_op
*) pc
;
981 switch(vstack_ax(stack
)->type
) {
983 ERR("unknown register type\n");
988 insn
->op
= FILTER_OP_UNARY_PLUS_S64
;
991 insn
->op
= FILTER_OP_UNARY_PLUS_DOUBLE
;
993 case REG_UNKNOWN
: /* Dynamic typing. */
997 next_pc
+= sizeof(struct unary_op
);
1001 case FILTER_OP_UNARY_MINUS
:
1003 struct unary_op
*insn
= (struct unary_op
*) pc
;
1005 switch(vstack_ax(stack
)->type
) {
1007 ERR("unknown register type\n");
1012 insn
->op
= FILTER_OP_UNARY_MINUS_S64
;
1015 insn
->op
= FILTER_OP_UNARY_MINUS_DOUBLE
;
1017 case REG_UNKNOWN
: /* Dynamic typing. */
1021 next_pc
+= sizeof(struct unary_op
);
1025 case FILTER_OP_UNARY_NOT
:
1027 struct unary_op
*insn
= (struct unary_op
*) pc
;
1029 switch(vstack_ax(stack
)->type
) {
1031 ERR("unknown register type\n");
1036 insn
->op
= FILTER_OP_UNARY_NOT_S64
;
1039 insn
->op
= FILTER_OP_UNARY_NOT_DOUBLE
;
1041 case REG_UNKNOWN
: /* Dynamic typing. */
1045 next_pc
+= sizeof(struct unary_op
);
1049 case FILTER_OP_UNARY_PLUS_S64
:
1050 case FILTER_OP_UNARY_MINUS_S64
:
1051 case FILTER_OP_UNARY_NOT_S64
:
1052 case FILTER_OP_UNARY_PLUS_DOUBLE
:
1053 case FILTER_OP_UNARY_MINUS_DOUBLE
:
1054 case FILTER_OP_UNARY_NOT_DOUBLE
:
1057 next_pc
+= sizeof(struct unary_op
);
1065 /* Continue to next instruction */
1066 /* Pop 1 when jump not taken */
1067 if (vstack_pop(stack
)) {
1071 next_pc
+= sizeof(struct logical_op
);
1075 /* load field ref */
1076 case FILTER_OP_LOAD_FIELD_REF
:
1078 ERR("Unknown field ref type\n");
1082 /* get context ref */
1083 case FILTER_OP_GET_CONTEXT_REF
:
1085 if (vstack_push(stack
)) {
1089 vstack_ax(stack
)->type
= REG_UNKNOWN
;
1090 next_pc
+= sizeof(struct load_op
) + sizeof(struct field_ref
);
1093 case FILTER_OP_LOAD_FIELD_REF_STRING
:
1094 case FILTER_OP_LOAD_FIELD_REF_SEQUENCE
:
1095 case FILTER_OP_GET_CONTEXT_REF_STRING
:
1097 if (vstack_push(stack
)) {
1101 vstack_ax(stack
)->type
= REG_STRING
;
1102 next_pc
+= sizeof(struct load_op
) + sizeof(struct field_ref
);
1105 case FILTER_OP_LOAD_FIELD_REF_S64
:
1106 case FILTER_OP_GET_CONTEXT_REF_S64
:
1108 if (vstack_push(stack
)) {
1112 vstack_ax(stack
)->type
= REG_S64
;
1113 next_pc
+= sizeof(struct load_op
) + sizeof(struct field_ref
);
1116 case FILTER_OP_LOAD_FIELD_REF_DOUBLE
:
1117 case FILTER_OP_GET_CONTEXT_REF_DOUBLE
:
1119 if (vstack_push(stack
)) {
1123 vstack_ax(stack
)->type
= REG_DOUBLE
;
1124 next_pc
+= sizeof(struct load_op
) + sizeof(struct field_ref
);
1128 /* load from immediate operand */
1129 case FILTER_OP_LOAD_STRING
:
1131 struct load_op
*insn
= (struct load_op
*) pc
;
1133 if (vstack_push(stack
)) {
1137 vstack_ax(stack
)->type
= REG_STRING
;
1138 next_pc
+= sizeof(struct load_op
) + strlen(insn
->data
) + 1;
1142 case FILTER_OP_LOAD_STAR_GLOB_STRING
:
1144 struct load_op
*insn
= (struct load_op
*) pc
;
1146 if (vstack_push(stack
)) {
1150 vstack_ax(stack
)->type
= REG_STAR_GLOB_STRING
;
1151 next_pc
+= sizeof(struct load_op
) + strlen(insn
->data
) + 1;
1155 case FILTER_OP_LOAD_S64
:
1157 if (vstack_push(stack
)) {
1161 vstack_ax(stack
)->type
= REG_S64
;
1162 next_pc
+= sizeof(struct load_op
)
1163 + sizeof(struct literal_numeric
);
1167 case FILTER_OP_LOAD_DOUBLE
:
1169 if (vstack_push(stack
)) {
1173 vstack_ax(stack
)->type
= REG_DOUBLE
;
1174 next_pc
+= sizeof(struct load_op
)
1175 + sizeof(struct literal_double
);
1180 case FILTER_OP_CAST_TO_S64
:
1182 struct cast_op
*insn
= (struct cast_op
*) pc
;
1184 switch (vstack_ax(stack
)->type
) {
1186 ERR("unknown register type\n");
1191 case REG_STAR_GLOB_STRING
:
1192 ERR("Cast op can only be applied to numeric or floating point registers\n");
1196 insn
->op
= FILTER_OP_CAST_NOP
;
1199 insn
->op
= FILTER_OP_CAST_DOUBLE_TO_S64
;
1205 vstack_ax(stack
)->type
= REG_S64
;
1206 next_pc
+= sizeof(struct cast_op
);
1209 case FILTER_OP_CAST_DOUBLE_TO_S64
:
1212 vstack_ax(stack
)->type
= REG_S64
;
1213 next_pc
+= sizeof(struct cast_op
);
1216 case FILTER_OP_CAST_NOP
:
1218 next_pc
+= sizeof(struct cast_op
);
1223 * Instructions for recursive traversal through composed types.
1225 case FILTER_OP_GET_CONTEXT_ROOT
:
1227 if (vstack_push(stack
)) {
1231 vstack_ax(stack
)->type
= REG_PTR
;
1232 vstack_ax(stack
)->load
.type
= LOAD_ROOT_CONTEXT
;
1233 next_pc
+= sizeof(struct load_op
);
1236 case FILTER_OP_GET_APP_CONTEXT_ROOT
:
1238 if (vstack_push(stack
)) {
1242 vstack_ax(stack
)->type
= REG_PTR
;
1243 vstack_ax(stack
)->load
.type
= LOAD_ROOT_APP_CONTEXT
;
1244 next_pc
+= sizeof(struct load_op
);
1247 case FILTER_OP_GET_PAYLOAD_ROOT
:
1249 if (vstack_push(stack
)) {
1253 vstack_ax(stack
)->type
= REG_PTR
;
1254 vstack_ax(stack
)->load
.type
= LOAD_ROOT_PAYLOAD
;
1255 next_pc
+= sizeof(struct load_op
);
1259 case FILTER_OP_LOAD_FIELD
:
1261 struct load_op
*insn
= (struct load_op
*) pc
;
1263 assert(vstack_ax(stack
)->type
== REG_PTR
);
1265 ret
= specialize_load_field(vstack_ax(stack
), insn
);
1269 next_pc
+= sizeof(struct load_op
);
1273 case FILTER_OP_LOAD_FIELD_S8
:
1274 case FILTER_OP_LOAD_FIELD_S16
:
1275 case FILTER_OP_LOAD_FIELD_S32
:
1276 case FILTER_OP_LOAD_FIELD_S64
:
1277 case FILTER_OP_LOAD_FIELD_U8
:
1278 case FILTER_OP_LOAD_FIELD_U16
:
1279 case FILTER_OP_LOAD_FIELD_U32
:
1280 case FILTER_OP_LOAD_FIELD_U64
:
1283 vstack_ax(stack
)->type
= REG_S64
;
1284 next_pc
+= sizeof(struct load_op
);
1288 case FILTER_OP_LOAD_FIELD_STRING
:
1289 case FILTER_OP_LOAD_FIELD_SEQUENCE
:
1292 vstack_ax(stack
)->type
= REG_STRING
;
1293 next_pc
+= sizeof(struct load_op
);
1297 case FILTER_OP_LOAD_FIELD_DOUBLE
:
1300 vstack_ax(stack
)->type
= REG_DOUBLE
;
1301 next_pc
+= sizeof(struct load_op
);
1305 case FILTER_OP_GET_SYMBOL
:
1307 struct load_op
*insn
= (struct load_op
*) pc
;
1309 dbg_printf("op get symbol\n");
1310 switch (vstack_ax(stack
)->load
.type
) {
1312 ERR("Nested fields not implemented yet.");
1315 case LOAD_ROOT_CONTEXT
:
1316 /* Lookup context field. */
1317 ret
= specialize_context_lookup(session
,
1319 &vstack_ax(stack
)->load
);
1323 case LOAD_ROOT_APP_CONTEXT
:
1324 /* Lookup app context field. */
1325 ret
= specialize_app_context_lookup(session
,
1327 &vstack_ax(stack
)->load
);
1331 case LOAD_ROOT_PAYLOAD
:
1332 /* Lookup event payload field. */
1333 ret
= specialize_event_payload_lookup(event
,
1335 &vstack_ax(stack
)->load
);
1340 next_pc
+= sizeof(struct load_op
) + sizeof(struct get_symbol
);
1344 case FILTER_OP_GET_SYMBOL_FIELD
:
1346 /* Always generated by specialize phase. */
1351 case FILTER_OP_GET_INDEX_U16
:
1353 struct load_op
*insn
= (struct load_op
*) pc
;
1354 struct get_index_u16
*index
= (struct get_index_u16
*) insn
->data
;
1356 dbg_printf("op get index u16\n");
1358 ret
= specialize_get_index(bytecode
, insn
, index
->index
,
1359 vstack_ax(stack
), sizeof(*index
));
1362 next_pc
+= sizeof(struct load_op
) + sizeof(struct get_index_u16
);
1366 case FILTER_OP_GET_INDEX_U64
:
1368 struct load_op
*insn
= (struct load_op
*) pc
;
1369 struct get_index_u64
*index
= (struct get_index_u64
*) insn
->data
;
1371 dbg_printf("op get index u64\n");
1373 ret
= specialize_get_index(bytecode
, insn
, index
->index
,
1374 vstack_ax(stack
), sizeof(*index
));
1377 next_pc
+= sizeof(struct load_op
) + sizeof(struct get_index_u64
);