*
* LTTng UST filter interpreter.
*
- * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2010-2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
*
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
*/
+#define _LGPL_SOURCE
+#include <urcu-pointer.h>
+#include <stdint.h>
#include "lttng-filter.h"
+#include "string-utils.h"
/*
* -1: wildcard found.
}
}
+/*
+ * Returns SIZE_MAX if the string is null-terminated, or the number of
+ * characters if not.
+ */
+static
+size_t get_str_or_seq_len(const struct estack_entry *entry)
+{
+ return entry->u.s.seq_len;
+}
+
+static
+int stack_star_glob_match(struct estack *stack, int top, const char *cmp_type)
+{
+ const char *pattern;
+ const char *candidate;
+ size_t pattern_len;
+ size_t candidate_len;
+
+ /* Find out which side is the pattern vs. the candidate. */
+ if (estack_ax(stack, top)->u.s.literal_type == ESTACK_STRING_LITERAL_TYPE_STAR_GLOB) {
+ pattern = estack_ax(stack, top)->u.s.str;
+ pattern_len = get_str_or_seq_len(estack_ax(stack, top));
+ candidate = estack_bx(stack, top)->u.s.str;
+ candidate_len = get_str_or_seq_len(estack_bx(stack, top));
+ } else {
+ pattern = estack_bx(stack, top)->u.s.str;
+ pattern_len = get_str_or_seq_len(estack_bx(stack, top));
+ candidate = estack_ax(stack, top)->u.s.str;
+ candidate_len = get_str_or_seq_len(estack_ax(stack, top));
+ }
+
+ /* Perform the match. Returns 0 when the result is true. */
+ return !strutils_star_glob_match(pattern, pattern_len, candidate,
+ candidate_len);
+}
+
static
int stack_strcmp(struct estack *stack, int top, const char *cmp_type)
{
for (;;) {
int escaped_r0 = 0;
- if (unlikely(p - estack_bx(stack, top)->u.s.str > estack_bx(stack, top)->u.s.seq_len || *p == '\0')) {
- if (q - estack_ax(stack, top)->u.s.str > estack_ax(stack, top)->u.s.seq_len || *q == '\0') {
- diff = 0;
+ if (unlikely(p - estack_bx(stack, top)->u.s.str >= estack_bx(stack, top)->u.s.seq_len || *p == '\0')) {
+ if (q - estack_ax(stack, top)->u.s.str >= estack_ax(stack, top)->u.s.seq_len || *q == '\0') {
+ return 0;
} else {
- ret = parse_char(&q);
- if (ret == -1)
- diff = 0;
- else
- diff = -1;
+ if (estack_ax(stack, top)->u.s.literal_type ==
+ ESTACK_STRING_LITERAL_TYPE_PLAIN) {
+ ret = parse_char(&q);
+ if (ret == -1)
+ return 0;
+ }
+ return -1;
}
- break;
}
- if (unlikely(q - estack_ax(stack, top)->u.s.str > estack_ax(stack, top)->u.s.seq_len || *q == '\0')) {
- if (p - estack_bx(stack, top)->u.s.str > estack_bx(stack, top)->u.s.seq_len || *p == '\0') {
- diff = 0;
- } else {
+ if (unlikely(q - estack_ax(stack, top)->u.s.str >= estack_ax(stack, top)->u.s.seq_len || *q == '\0')) {
+ if (estack_bx(stack, top)->u.s.literal_type ==
+ ESTACK_STRING_LITERAL_TYPE_PLAIN) {
ret = parse_char(&p);
if (ret == -1)
- diff = 0;
- else
- diff = 1;
+ return 0;
}
- break;
+ return 1;
}
- if (estack_bx(stack, top)->u.s.literal) {
+ if (estack_bx(stack, top)->u.s.literal_type ==
+ ESTACK_STRING_LITERAL_TYPE_PLAIN) {
ret = parse_char(&p);
if (ret == -1) {
return 0;
}
/* else compare both char */
}
- if (estack_ax(stack, top)->u.s.literal) {
+ if (estack_ax(stack, top)->u.s.literal_type ==
+ ESTACK_STRING_LITERAL_TYPE_PLAIN) {
ret = parse_char(&q);
if (ret == -1) {
return 0;
(unsigned int) *(filter_opcode_t *) pc); \
switch (*(filter_opcode_t *) pc) {
-#define OP(name) case name
+#define OP(name) jump_target_##name: __attribute__((unused)); \
+ case name
#define PO break
#define END_OP } \
}
+#define JUMP_TO(name) \
+ goto jump_target_##name
+
#else
/*
#define END_OP
+#define JUMP_TO(name) \
+ goto LABEL_##name
+
#endif
/*
const char *filter_stack_data)
{
struct bytecode_runtime *bytecode = filter_data;
+ struct lttng_session *session = bytecode->p.session;
void *pc, *next_pc, *start_pc;
int ret = -EINVAL;
uint64_t retval = 0;
struct estack _stack;
struct estack *stack = &_stack;
register int64_t ax = 0, bx = 0;
+ register enum entry_type ax_t = REG_UNKNOWN, bx_t = REG_UNKNOWN;
register int top = FILTER_STACK_EMPTY;
#ifndef INTERPRETER_USE_SWITCH
static void *dispatch[NR_FILTER_OPS] = {
[ FILTER_OP_GE_STRING ] = &&LABEL_FILTER_OP_GE_STRING,
[ FILTER_OP_LE_STRING ] = &&LABEL_FILTER_OP_LE_STRING,
+ /* globbing pattern binary comparator */
+ [ FILTER_OP_EQ_STAR_GLOB_STRING ] = &&LABEL_FILTER_OP_EQ_STAR_GLOB_STRING,
+ [ FILTER_OP_NE_STAR_GLOB_STRING ] = &&LABEL_FILTER_OP_NE_STAR_GLOB_STRING,
+
/* s64 binary comparator */
[ FILTER_OP_EQ_S64 ] = &&LABEL_FILTER_OP_EQ_S64,
[ FILTER_OP_NE_S64 ] = &&LABEL_FILTER_OP_NE_S64,
[ FILTER_OP_AND ] = &&LABEL_FILTER_OP_AND,
[ FILTER_OP_OR ] = &&LABEL_FILTER_OP_OR,
- /* load */
+ /* load field ref */
[ FILTER_OP_LOAD_FIELD_REF ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF,
[ FILTER_OP_LOAD_FIELD_REF_STRING ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF_STRING,
[ FILTER_OP_LOAD_FIELD_REF_SEQUENCE ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF_SEQUENCE,
[ FILTER_OP_LOAD_FIELD_REF_S64 ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF_S64,
[ FILTER_OP_LOAD_FIELD_REF_DOUBLE ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF_DOUBLE,
+ /* load from immediate operand */
[ FILTER_OP_LOAD_STRING ] = &&LABEL_FILTER_OP_LOAD_STRING,
+ [ FILTER_OP_LOAD_STAR_GLOB_STRING ] = &&LABEL_FILTER_OP_LOAD_STAR_GLOB_STRING,
[ FILTER_OP_LOAD_S64 ] = &&LABEL_FILTER_OP_LOAD_S64,
[ FILTER_OP_LOAD_DOUBLE ] = &&LABEL_FILTER_OP_LOAD_DOUBLE,
[ FILTER_OP_CAST_TO_S64 ] = &&LABEL_FILTER_OP_CAST_TO_S64,
[ FILTER_OP_CAST_DOUBLE_TO_S64 ] = &&LABEL_FILTER_OP_CAST_DOUBLE_TO_S64,
[ FILTER_OP_CAST_NOP ] = &&LABEL_FILTER_OP_CAST_NOP,
+
+ /* get context ref */
+ [ FILTER_OP_GET_CONTEXT_REF ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF,
+ [ FILTER_OP_GET_CONTEXT_REF_STRING ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF_STRING,
+ [ FILTER_OP_GET_CONTEXT_REF_S64 ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF_S64,
+ [ FILTER_OP_GET_CONTEXT_REF_DOUBLE ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF_DOUBLE,
};
#endif /* #ifndef INTERPRETER_USE_SWITCH */
goto end;
OP(FILTER_OP_EQ):
+ {
+ /* Dynamic typing. */
+ switch (estack_ax_t) {
+ case REG_S64:
+ switch (estack_bx_t) {
+ case REG_S64:
+ JUMP_TO(FILTER_OP_EQ_S64);
+ case REG_DOUBLE:
+ JUMP_TO(FILTER_OP_EQ_DOUBLE_S64);
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case REG_DOUBLE:
+ switch (estack_bx_t) {
+ case REG_S64:
+ JUMP_TO(FILTER_OP_EQ_S64_DOUBLE);
+ case REG_DOUBLE:
+ JUMP_TO(FILTER_OP_EQ_DOUBLE);
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case REG_STRING:
+ switch (estack_bx_t) {
+ case REG_S64: /* Fall-through */
+ case REG_DOUBLE:
+ ret = -EINVAL;
+ goto end;
+ case REG_STRING:
+ JUMP_TO(FILTER_OP_EQ_STRING);
+ case REG_STAR_GLOB_STRING:
+ JUMP_TO(FILTER_OP_EQ_STAR_GLOB_STRING);
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case REG_STAR_GLOB_STRING:
+ switch (estack_bx_t) {
+ case REG_S64: /* Fall-through */
+ case REG_DOUBLE:
+ ret = -EINVAL;
+ goto end;
+ case REG_STRING:
+ JUMP_TO(FILTER_OP_EQ_STAR_GLOB_STRING);
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_ax_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ }
OP(FILTER_OP_NE):
+ {
+ /* Dynamic typing. */
+ switch (estack_ax_t) {
+ case REG_S64:
+ switch (estack_bx_t) {
+ case REG_S64:
+ JUMP_TO(FILTER_OP_NE_S64);
+ case REG_DOUBLE:
+ JUMP_TO(FILTER_OP_NE_DOUBLE_S64);
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case REG_DOUBLE:
+ switch (estack_bx_t) {
+ case REG_S64:
+ JUMP_TO(FILTER_OP_NE_S64_DOUBLE);
+ case REG_DOUBLE:
+ JUMP_TO(FILTER_OP_NE_DOUBLE);
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case REG_STRING:
+ switch (estack_bx_t) {
+ case REG_S64: /* Fall-through */
+ case REG_DOUBLE:
+ ret = -EINVAL;
+ goto end;
+ case REG_STRING:
+ JUMP_TO(FILTER_OP_NE_STRING);
+ case REG_STAR_GLOB_STRING:
+ JUMP_TO(FILTER_OP_NE_STAR_GLOB_STRING);
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case REG_STAR_GLOB_STRING:
+ switch (estack_bx_t) {
+ case REG_S64: /* Fall-through */
+ case REG_DOUBLE:
+ ret = -EINVAL;
+ goto end;
+ case REG_STRING:
+ JUMP_TO(FILTER_OP_NE_STAR_GLOB_STRING);
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_ax_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ }
OP(FILTER_OP_GT):
+ {
+ /* Dynamic typing. */
+ switch (estack_ax_t) {
+ case REG_S64:
+ switch (estack_bx_t) {
+ case REG_S64:
+ JUMP_TO(FILTER_OP_GT_S64);
+ case REG_DOUBLE:
+ JUMP_TO(FILTER_OP_GT_DOUBLE_S64);
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case REG_DOUBLE:
+ switch (estack_bx_t) {
+ case REG_S64:
+ JUMP_TO(FILTER_OP_GT_S64_DOUBLE);
+ case REG_DOUBLE:
+ JUMP_TO(FILTER_OP_GT_DOUBLE);
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case REG_STRING:
+ switch (estack_bx_t) {
+ case REG_S64: /* Fall-through */
+ case REG_DOUBLE: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ case REG_STRING:
+ JUMP_TO(FILTER_OP_GT_STRING);
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_ax_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ }
OP(FILTER_OP_LT):
+ {
+ /* Dynamic typing. */
+ switch (estack_ax_t) {
+ case REG_S64:
+ switch (estack_bx_t) {
+ case REG_S64:
+ JUMP_TO(FILTER_OP_LT_S64);
+ case REG_DOUBLE:
+ JUMP_TO(FILTER_OP_LT_DOUBLE_S64);
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case REG_DOUBLE:
+ switch (estack_bx_t) {
+ case REG_S64:
+ JUMP_TO(FILTER_OP_LT_S64_DOUBLE);
+ case REG_DOUBLE:
+ JUMP_TO(FILTER_OP_LT_DOUBLE);
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case REG_STRING:
+ switch (estack_bx_t) {
+ case REG_S64: /* Fall-through */
+ case REG_DOUBLE: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ case REG_STRING:
+ JUMP_TO(FILTER_OP_LT_STRING);
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_ax_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ }
OP(FILTER_OP_GE):
+ {
+ /* Dynamic typing. */
+ switch (estack_ax_t) {
+ case REG_S64:
+ switch (estack_bx_t) {
+ case REG_S64:
+ JUMP_TO(FILTER_OP_GE_S64);
+ case REG_DOUBLE:
+ JUMP_TO(FILTER_OP_GE_DOUBLE_S64);
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case REG_DOUBLE:
+ switch (estack_bx_t) {
+ case REG_S64:
+ JUMP_TO(FILTER_OP_GE_S64_DOUBLE);
+ case REG_DOUBLE:
+ JUMP_TO(FILTER_OP_GE_DOUBLE);
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case REG_STRING:
+ switch (estack_bx_t) {
+ case REG_S64: /* Fall-through */
+ case REG_DOUBLE: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ case REG_STRING:
+ JUMP_TO(FILTER_OP_GE_STRING);
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_ax_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ }
OP(FILTER_OP_LE):
- ERR("unsupported non-specialized bytecode op %u\n",
- (unsigned int) *(filter_opcode_t *) pc);
- ret = -EINVAL;
- goto end;
+ {
+ /* Dynamic typing. */
+ switch (estack_ax_t) {
+ case REG_S64:
+ switch (estack_bx_t) {
+ case REG_S64:
+ JUMP_TO(FILTER_OP_LE_S64);
+ case REG_DOUBLE:
+ JUMP_TO(FILTER_OP_LE_DOUBLE_S64);
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case REG_DOUBLE:
+ switch (estack_bx_t) {
+ case REG_S64:
+ JUMP_TO(FILTER_OP_LE_S64_DOUBLE);
+ case REG_DOUBLE:
+ JUMP_TO(FILTER_OP_LE_DOUBLE);
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case REG_STRING:
+ switch (estack_bx_t) {
+ case REG_S64: /* Fall-through */
+ case REG_DOUBLE: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ case REG_STRING:
+ JUMP_TO(FILTER_OP_LE_STRING);
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_ax_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ }
OP(FILTER_OP_EQ_STRING):
{
int res;
res = (stack_strcmp(stack, top, "==") == 0);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (stack_strcmp(stack, top, "!=") != 0);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (stack_strcmp(stack, top, ">") > 0);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (stack_strcmp(stack, top, "<") < 0);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (stack_strcmp(stack, top, ">=") >= 0);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (stack_strcmp(stack, top, "<=") <= 0);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
+ estack_ax_v = res;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+
+ OP(FILTER_OP_EQ_STAR_GLOB_STRING):
+ {
+ int res;
+
+ res = (stack_star_glob_match(stack, top, "==") == 0);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
+ estack_ax_v = res;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+ OP(FILTER_OP_NE_STAR_GLOB_STRING):
+ {
+ int res;
+
+ res = (stack_star_glob_match(stack, top, "!=") != 0);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx_v == estack_ax_v);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx_v != estack_ax_v);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx_v > estack_ax_v);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx_v < estack_ax_v);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx_v >= estack_ax_v);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx_v <= estack_ax_v);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx(stack, top)->u.d == estack_ax(stack, top)->u.d);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx(stack, top)->u.d != estack_ax(stack, top)->u.d);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx(stack, top)->u.d > estack_ax(stack, top)->u.d);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx(stack, top)->u.d < estack_ax(stack, top)->u.d);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx(stack, top)->u.d >= estack_ax(stack, top)->u.d);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx(stack, top)->u.d <= estack_ax(stack, top)->u.d);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx(stack, top)->u.d == estack_ax_v);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx(stack, top)->u.d != estack_ax_v);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx(stack, top)->u.d > estack_ax_v);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx(stack, top)->u.d < estack_ax_v);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx(stack, top)->u.d >= estack_ax_v);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx(stack, top)->u.d <= estack_ax_v);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx_v == estack_ax(stack, top)->u.d);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx_v != estack_ax(stack, top)->u.d);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx_v > estack_ax(stack, top)->u.d);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx_v < estack_ax(stack, top)->u.d);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx_v >= estack_ax(stack, top)->u.d);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
int res;
res = (estack_bx_v <= estack_ax(stack, top)->u.d);
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = res;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct binary_op);
PO;
}
/* unary */
OP(FILTER_OP_UNARY_PLUS):
+ {
+ /* Dynamic typing. */
+ switch (estack_ax_t) {
+ case REG_S64: /* Fall-through. */
+ JUMP_TO(FILTER_OP_UNARY_PLUS_S64);
+ case REG_DOUBLE:
+ JUMP_TO(FILTER_OP_UNARY_PLUS_DOUBLE);
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_ax_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ }
OP(FILTER_OP_UNARY_MINUS):
+ {
+ /* Dynamic typing. */
+ switch (estack_ax_t) {
+ case REG_S64:
+ JUMP_TO(FILTER_OP_UNARY_MINUS_S64);
+ case REG_DOUBLE:
+ JUMP_TO(FILTER_OP_UNARY_MINUS_DOUBLE);
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_ax_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ }
OP(FILTER_OP_UNARY_NOT):
- ERR("unsupported non-specialized bytecode op %u\n",
- (unsigned int) *(filter_opcode_t *) pc);
- ret = -EINVAL;
- goto end;
-
+ {
+ /* Dynamic typing. */
+ switch (estack_ax_t) {
+ case REG_S64:
+ JUMP_TO(FILTER_OP_UNARY_NOT_S64);
+ case REG_DOUBLE:
+ JUMP_TO(FILTER_OP_UNARY_NOT_DOUBLE);
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_ax_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ next_pc += sizeof(struct unary_op);
+ PO;
+ }
OP(FILTER_OP_UNARY_PLUS_S64):
OP(FILTER_OP_UNARY_PLUS_DOUBLE):
}
OP(FILTER_OP_UNARY_NOT_DOUBLE):
{
- estack_ax(stack, top)->u.d = !estack_ax(stack, top)->u.d;
+ estack_ax_v = !estack_ax(stack, top)->u.d;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct unary_op);
PO;
}
{
struct logical_op *insn = (struct logical_op *) pc;
+ if (estack_ax_t != REG_S64) {
+ ret = -EINVAL;
+ goto end;
+ }
/* If AX is 0, skip and evaluate to 0 */
if (unlikely(estack_ax_v == 0)) {
dbg_printf("Jumping to bytecode offset %u\n",
next_pc = start_pc + insn->skip_offset;
} else {
/* Pop 1 when jump not taken */
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
next_pc += sizeof(struct logical_op);
}
PO;
{
struct logical_op *insn = (struct logical_op *) pc;
+ if (estack_ax_t != REG_S64) {
+ ret = -EINVAL;
+ goto end;
+ }
/* If AX is nonzero, skip and evaluate to 1 */
-
if (unlikely(estack_ax_v != 0)) {
estack_ax_v = 1;
dbg_printf("Jumping to bytecode offset %u\n",
next_pc = start_pc + insn->skip_offset;
} else {
/* Pop 1 when jump not taken */
- estack_pop(stack, top, ax, bx);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
next_pc += sizeof(struct logical_op);
}
PO;
}
- /* load */
+ /* load field ref */
OP(FILTER_OP_LOAD_FIELD_REF_STRING):
{
struct load_op *insn = (struct load_op *) pc;
dbg_printf("load field ref offset %u type string\n",
ref->offset);
- estack_push(stack, top, ax, bx);
+ estack_push(stack, top, ax, bx, ax_t, bx_t);
estack_ax(stack, top)->u.s.str =
*(const char * const *) &filter_stack_data[ref->offset];
if (unlikely(!estack_ax(stack, top)->u.s.str)) {
ret = -EINVAL;
goto end;
}
- estack_ax(stack, top)->u.s.seq_len = UINT_MAX;
- estack_ax(stack, top)->u.s.literal = 0;
+ estack_ax(stack, top)->u.s.seq_len = SIZE_MAX;
+ estack_ax(stack, top)->u.s.literal_type =
+ ESTACK_STRING_LITERAL_TYPE_NONE;
+ estack_ax_t = REG_STRING;
dbg_printf("ref load string %s\n", estack_ax(stack, top)->u.s.str);
next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
PO;
dbg_printf("load field ref offset %u type sequence\n",
ref->offset);
- estack_push(stack, top, ax, bx);
+ estack_push(stack, top, ax, bx, ax_t, bx_t);
estack_ax(stack, top)->u.s.seq_len =
*(unsigned long *) &filter_stack_data[ref->offset];
estack_ax(stack, top)->u.s.str =
*(const char **) (&filter_stack_data[ref->offset
+ sizeof(unsigned long)]);
+ estack_ax_t = REG_STRING;
if (unlikely(!estack_ax(stack, top)->u.s.str)) {
dbg_printf("Filter warning: loading a NULL sequence.\n");
ret = -EINVAL;
goto end;
}
- estack_ax(stack, top)->u.s.literal = 0;
+ estack_ax(stack, top)->u.s.literal_type =
+ ESTACK_STRING_LITERAL_TYPE_NONE;
next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
PO;
}
dbg_printf("load field ref offset %u type s64\n",
ref->offset);
- estack_push(stack, top, ax, bx);
+ estack_push(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v =
((struct literal_numeric *) &filter_stack_data[ref->offset])->v;
+ estack_ax_t = REG_S64;
dbg_printf("ref load s64 %" PRIi64 "\n", estack_ax_v);
next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
PO;
dbg_printf("load field ref offset %u type double\n",
ref->offset);
- estack_push(stack, top, ax, bx);
+ estack_push(stack, top, ax, bx, ax_t, bx_t);
memcpy(&estack_ax(stack, top)->u.d, &filter_stack_data[ref->offset],
sizeof(struct literal_double));
+ estack_ax_t = REG_DOUBLE;
dbg_printf("ref load double %g\n", estack_ax(stack, top)->u.d);
next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
PO;
}
+ /* load from immediate operand */
OP(FILTER_OP_LOAD_STRING):
{
struct load_op *insn = (struct load_op *) pc;
dbg_printf("load string %s\n", insn->data);
- estack_push(stack, top, ax, bx);
+ estack_push(stack, top, ax, bx, ax_t, bx_t);
+ estack_ax(stack, top)->u.s.str = insn->data;
+ estack_ax(stack, top)->u.s.seq_len = SIZE_MAX;
+ estack_ax(stack, top)->u.s.literal_type =
+ ESTACK_STRING_LITERAL_TYPE_PLAIN;
+ estack_ax_t = REG_STRING;
+ next_pc += sizeof(struct load_op) + strlen(insn->data) + 1;
+ PO;
+ }
+
+ OP(FILTER_OP_LOAD_STAR_GLOB_STRING):
+ {
+ struct load_op *insn = (struct load_op *) pc;
+
+ dbg_printf("load globbing pattern %s\n", insn->data);
+ estack_push(stack, top, ax, bx, ax_t, bx_t);
estack_ax(stack, top)->u.s.str = insn->data;
- estack_ax(stack, top)->u.s.seq_len = UINT_MAX;
- estack_ax(stack, top)->u.s.literal = 1;
+ estack_ax(stack, top)->u.s.seq_len = SIZE_MAX;
+ estack_ax(stack, top)->u.s.literal_type =
+ ESTACK_STRING_LITERAL_TYPE_STAR_GLOB;
+ estack_ax_t = REG_STAR_GLOB_STRING;
next_pc += sizeof(struct load_op) + strlen(insn->data) + 1;
PO;
}
{
struct load_op *insn = (struct load_op *) pc;
- estack_push(stack, top, ax, bx);
+ estack_push(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v = ((struct literal_numeric *) insn->data)->v;
+ estack_ax_t = REG_S64;
dbg_printf("load s64 %" PRIi64 "\n", estack_ax_v);
next_pc += sizeof(struct load_op)
+ sizeof(struct literal_numeric);
{
struct load_op *insn = (struct load_op *) pc;
- estack_push(stack, top, ax, bx);
+ estack_push(stack, top, ax, bx, ax_t, bx_t);
memcpy(&estack_ax(stack, top)->u.d, insn->data,
sizeof(struct literal_double));
- dbg_printf("load s64 %g\n", estack_ax(stack, top)->u.d);
+ estack_ax_t = REG_DOUBLE;
+ dbg_printf("load double %g\n", estack_ax(stack, top)->u.d);
next_pc += sizeof(struct load_op)
+ sizeof(struct literal_double);
PO;
/* cast */
OP(FILTER_OP_CAST_TO_S64):
- ERR("unsupported non-specialized bytecode op %u\n",
- (unsigned int) *(filter_opcode_t *) pc);
- ret = -EINVAL;
- goto end;
+ {
+ /* Dynamic typing. */
+ switch (estack_ax_t) {
+ case REG_S64:
+ JUMP_TO(FILTER_OP_CAST_NOP);
+ case REG_DOUBLE:
+ JUMP_TO(FILTER_OP_CAST_DOUBLE_TO_S64);
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_ax_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ }
OP(FILTER_OP_CAST_DOUBLE_TO_S64):
{
estack_ax_v = (int64_t) estack_ax(stack, top)->u.d;
+ estack_ax_t = REG_S64;
next_pc += sizeof(struct cast_op);
PO;
}
PO;
}
+ /* get context ref */
+ OP(FILTER_OP_GET_CONTEXT_REF):
+ {
+ struct load_op *insn = (struct load_op *) pc;
+ struct field_ref *ref = (struct field_ref *) insn->data;
+ struct lttng_ctx *ctx;
+ struct lttng_ctx_field *ctx_field;
+ struct lttng_ctx_value v;
+
+ dbg_printf("get context ref offset %u type dynamic\n",
+ ref->offset);
+ ctx = rcu_dereference(session->ctx);
+ ctx_field = &ctx->fields[ref->offset];
+ ctx_field->get_value(ctx_field, &v);
+ estack_push(stack, top, ax, bx, ax_t, bx_t);
+ switch (v.sel) {
+ case LTTNG_UST_DYNAMIC_TYPE_NONE:
+ ret = -EINVAL;
+ goto end;
+ case LTTNG_UST_DYNAMIC_TYPE_S64:
+ estack_ax_v = v.u.s64;
+ estack_ax_t = REG_S64;
+ dbg_printf("ref get context dynamic s64 %" PRIi64 "\n", estack_ax_v);
+ break;
+ case LTTNG_UST_DYNAMIC_TYPE_DOUBLE:
+ estack_ax(stack, top)->u.d = v.u.d;
+ estack_ax_t = REG_DOUBLE;
+ dbg_printf("ref get context dynamic double %g\n", estack_ax(stack, top)->u.d);
+ break;
+ case LTTNG_UST_DYNAMIC_TYPE_STRING:
+ estack_ax(stack, top)->u.s.str = v.u.str;
+ if (unlikely(!estack_ax(stack, top)->u.s.str)) {
+ dbg_printf("Filter warning: loading a NULL string.\n");
+ ret = -EINVAL;
+ goto end;
+ }
+ estack_ax(stack, top)->u.s.seq_len = SIZE_MAX;
+ estack_ax(stack, top)->u.s.literal_type =
+ ESTACK_STRING_LITERAL_TYPE_NONE;
+ dbg_printf("ref get context dynamic string %s\n", estack_ax(stack, top)->u.s.str);
+ estack_ax_t = REG_STRING;
+ break;
+ default:
+ dbg_printf("Filter warning: unknown dynamic type (%d).\n", (int) v.sel);
+ ret = -EINVAL;
+ goto end;
+ }
+ next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
+ PO;
+ }
+
+ OP(FILTER_OP_GET_CONTEXT_REF_STRING):
+ {
+ struct load_op *insn = (struct load_op *) pc;
+ struct field_ref *ref = (struct field_ref *) insn->data;
+ struct lttng_ctx *ctx;
+ struct lttng_ctx_field *ctx_field;
+ struct lttng_ctx_value v;
+
+ dbg_printf("get context ref offset %u type string\n",
+ ref->offset);
+ ctx = rcu_dereference(session->ctx);
+ ctx_field = &ctx->fields[ref->offset];
+ ctx_field->get_value(ctx_field, &v);
+ estack_push(stack, top, ax, bx, ax_t, bx_t);
+ estack_ax(stack, top)->u.s.str = v.u.str;
+ if (unlikely(!estack_ax(stack, top)->u.s.str)) {
+ dbg_printf("Filter warning: loading a NULL string.\n");
+ ret = -EINVAL;
+ goto end;
+ }
+ estack_ax(stack, top)->u.s.seq_len = SIZE_MAX;
+ estack_ax(stack, top)->u.s.literal_type =
+ ESTACK_STRING_LITERAL_TYPE_NONE;
+ estack_ax_t = REG_STRING;
+ dbg_printf("ref get context string %s\n", estack_ax(stack, top)->u.s.str);
+ next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
+ PO;
+ }
+
+ OP(FILTER_OP_GET_CONTEXT_REF_S64):
+ {
+ struct load_op *insn = (struct load_op *) pc;
+ struct field_ref *ref = (struct field_ref *) insn->data;
+ struct lttng_ctx *ctx;
+ struct lttng_ctx_field *ctx_field;
+ struct lttng_ctx_value v;
+
+ dbg_printf("get context ref offset %u type s64\n",
+ ref->offset);
+ ctx = rcu_dereference(session->ctx);
+ ctx_field = &ctx->fields[ref->offset];
+ ctx_field->get_value(ctx_field, &v);
+ estack_push(stack, top, ax, bx, ax_t, bx_t);
+ estack_ax_v = v.u.s64;
+ estack_ax_t = REG_S64;
+ dbg_printf("ref get context s64 %" PRIi64 "\n", estack_ax_v);
+ next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
+ PO;
+ }
+
+ OP(FILTER_OP_GET_CONTEXT_REF_DOUBLE):
+ {
+ struct load_op *insn = (struct load_op *) pc;
+ struct field_ref *ref = (struct field_ref *) insn->data;
+ struct lttng_ctx *ctx;
+ struct lttng_ctx_field *ctx_field;
+ struct lttng_ctx_value v;
+
+ dbg_printf("get context ref offset %u type double\n",
+ ref->offset);
+ ctx = rcu_dereference(session->ctx);
+ ctx_field = &ctx->fields[ref->offset];
+ ctx_field->get_value(ctx_field, &v);
+ estack_push(stack, top, ax, bx, ax_t, bx_t);
+ memcpy(&estack_ax(stack, top)->u.d, &v.u.d, sizeof(struct literal_double));
+ estack_ax_t = REG_DOUBLE;
+ dbg_printf("ref get context double %g\n", estack_ax(stack, top)->u.d);
+ next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
+ PO;
+ }
+
END_OP
end:
/* return 0 (discard) on error */
projects / lttng-ust.git / blobdiff