-int lttng_filter_false(void *filter_data,
- const char *filter_stack_data)
-{
- return 0;
-}
-
-static
-int lttng_filter_interpret_bytecode(void *filter_data,
- const char *filter_stack_data)
-{
- struct bytecode_runtime *bytecode = filter_data;
- void *pc, *next_pc, *start_pc;
- int ret = -EINVAL;
- int retval = 0;
- struct reg reg[NR_REG];
-
- start_pc = &bytecode->data[0];
- for (pc = next_pc = start_pc; pc - start_pc < bytecode->len;
- pc = next_pc) {
- dbg_printf("Executing op %s (%u)\n",
- print_op((unsigned int) *(filter_opcode_t *) pc),
- (unsigned int) *(filter_opcode_t *) pc);
- switch (*(filter_opcode_t *) pc) {
- case FILTER_OP_UNKNOWN:
- case FILTER_OP_LOAD_FIELD_REF:
- default:
- ERR("unknown bytecode op %u\n",
- (unsigned int) *(filter_opcode_t *) pc);
- ret = -EINVAL;
- goto end;
-
- case FILTER_OP_RETURN:
- retval = !!reg[0].v;
- ret = 0;
- goto end;
-
- /* binary */
- case FILTER_OP_MUL:
- case FILTER_OP_DIV:
- case FILTER_OP_MOD:
- case FILTER_OP_PLUS:
- case FILTER_OP_MINUS:
- case FILTER_OP_RSHIFT:
- case FILTER_OP_LSHIFT:
- case FILTER_OP_BIN_AND:
- case FILTER_OP_BIN_OR:
- case FILTER_OP_BIN_XOR:
- ERR("unsupported bytecode op %u\n",
- (unsigned int) *(filter_opcode_t *) pc);
- ret = -EINVAL;
- goto end;
-
- case FILTER_OP_EQ:
- {
- switch (reg[REG_R0].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_STRING:
- reg[REG_R0].v = (reg_strcmp(reg, "==") == 0);
- break;
- case REG_S64:
- switch (reg[REG_R1].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_S64:
- reg[REG_R0].v = (reg[REG_R0].v == reg[REG_R1].v);
- break;
- case REG_DOUBLE:
- reg[REG_R0].v = (reg[REG_R0].v == reg[REG_R1].d);
- break;
- }
- break;
- case REG_DOUBLE:
- switch (reg[REG_R1].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_S64:
- reg[REG_R0].v = (reg[REG_R0].d == reg[REG_R1].v);
- break;
- case REG_DOUBLE:
- reg[REG_R0].v = (reg[REG_R0].d == reg[REG_R1].d);
- break;
- }
- break;
- }
- reg[REG_R0].type = REG_S64;
- next_pc += sizeof(struct binary_op);
- break;
- }
- case FILTER_OP_NE:
- {
- switch (reg[REG_R0].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_STRING:
- reg[REG_R0].v = (reg_strcmp(reg, "!=") != 0);
- break;
- case REG_S64:
- switch (reg[REG_R1].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_S64:
- reg[REG_R0].v = (reg[REG_R0].v != reg[REG_R1].v);
- break;
- case REG_DOUBLE:
- reg[REG_R0].v = (reg[REG_R0].v != reg[REG_R1].d);
- break;
- }
- break;
- case REG_DOUBLE:
- switch (reg[REG_R1].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_S64:
- reg[REG_R0].v = (reg[REG_R0].d != reg[REG_R1].v);
- break;
- case REG_DOUBLE:
- reg[REG_R0].v = (reg[REG_R0].d != reg[REG_R1].d);
- break;
- }
- break;
- }
- reg[REG_R0].type = REG_S64;
- next_pc += sizeof(struct binary_op);
- break;
- }
- case FILTER_OP_GT:
- {
- switch (reg[REG_R0].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_STRING:
- reg[REG_R0].v = (reg_strcmp(reg, ">") > 0);
- break;
- case REG_S64:
- switch (reg[REG_R1].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_S64:
- reg[REG_R0].v = (reg[REG_R0].v > reg[REG_R1].v);
- break;
- case REG_DOUBLE:
- reg[REG_R0].v = (reg[REG_R0].v > reg[REG_R1].d);
- break;
- }
- break;
- case REG_DOUBLE:
- switch (reg[REG_R1].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_S64:
- reg[REG_R0].v = (reg[REG_R0].d > reg[REG_R1].v);
- break;
- case REG_DOUBLE:
- reg[REG_R0].v = (reg[REG_R0].d > reg[REG_R1].d);
- break;
- }
- break;
- }
- reg[REG_R0].type = REG_S64;
- next_pc += sizeof(struct binary_op);
- break;
- }
- case FILTER_OP_LT:
- {
- switch (reg[REG_R0].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_STRING:
- reg[REG_R0].v = (reg_strcmp(reg, "<") < 0);
- break;
- case REG_S64:
- switch (reg[REG_R1].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_S64:
- reg[REG_R0].v = (reg[REG_R0].v < reg[REG_R1].v);
- break;
- case REG_DOUBLE:
- reg[REG_R0].v = (reg[REG_R0].v < reg[REG_R1].d);
- break;
- }
- break;
- case REG_DOUBLE:
- switch (reg[REG_R1].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_S64:
- reg[REG_R0].v = (reg[REG_R0].d < reg[REG_R1].v);
- break;
- case REG_DOUBLE:
- reg[REG_R0].v = (reg[REG_R0].d < reg[REG_R1].d);
- break;
- }
- break;
- }
- reg[REG_R0].type = REG_S64;
- next_pc += sizeof(struct binary_op);
- break;
- }
- case FILTER_OP_GE:
- {
- switch (reg[REG_R0].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_STRING:
- reg[REG_R0].v = (reg_strcmp(reg, ">=") >= 0);
- break;
- case REG_S64:
- switch (reg[REG_R1].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_S64:
- reg[REG_R0].v = (reg[REG_R0].v >= reg[REG_R1].v);
- break;
- case REG_DOUBLE:
- reg[REG_R0].v = (reg[REG_R0].v >= reg[REG_R1].d);
- break;
- }
- break;
- case REG_DOUBLE:
- switch (reg[REG_R1].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_S64:
- reg[REG_R0].v = (reg[REG_R0].d >= reg[REG_R1].v);
- break;
- case REG_DOUBLE:
- reg[REG_R0].v = (reg[REG_R0].d >= reg[REG_R1].d);
- break;
- }
- break;
- }
- reg[REG_R0].type = REG_S64;
- next_pc += sizeof(struct binary_op);
- break;
- }
- case FILTER_OP_LE:
- {
- switch (reg[REG_R0].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_STRING:
- reg[REG_R0].v = (reg_strcmp(reg, "<=") <= 0);
- break;
- case REG_S64:
- switch (reg[REG_R1].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_S64:
- reg[REG_R0].v = (reg[REG_R0].v <= reg[REG_R1].v);
- break;
- case REG_DOUBLE:
- reg[REG_R0].v = (reg[REG_R0].v <= reg[REG_R1].d);
- break;
- }
- break;
- case REG_DOUBLE:
- switch (reg[REG_R1].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_S64:
- reg[REG_R0].v = (reg[REG_R0].d <= reg[REG_R1].v);
- break;
- case REG_DOUBLE:
- reg[REG_R0].v = (reg[REG_R0].d <= reg[REG_R1].d);
- break;
- }
- break;
- }
- reg[REG_R0].type = REG_S64;
- next_pc += sizeof(struct binary_op);
- break;
- }
-
- /* unary */
- case FILTER_OP_UNARY_PLUS:
- {
- next_pc += sizeof(struct unary_op);
- break;
- }
- case FILTER_OP_UNARY_MINUS:
- {
- struct unary_op *insn = (struct unary_op *) pc;
-
- switch (reg[insn->reg].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_STRING:
- ERR("Unary minus can only be applied to numeric or floating point registers\n");
- ret = -EINVAL;
- goto end;
- case REG_S64:
- reg[insn->reg].v = -reg[insn->reg].v;
- break;
- case REG_DOUBLE:
- reg[insn->reg].d = -reg[insn->reg].d;
- break;
- }
- next_pc += sizeof(struct unary_op);
- break;
- }
- case FILTER_OP_UNARY_NOT:
- {
- struct unary_op *insn = (struct unary_op *) pc;
-
- switch (reg[insn->reg].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_STRING:
- ERR("Unary not can only be applied to numeric or floating point registers\n");
- ret = -EINVAL;
- goto end;
- case REG_S64:
- reg[insn->reg].v = !reg[insn->reg].v;
- break;
- case REG_DOUBLE:
- reg[insn->reg].d = !reg[insn->reg].d;
- break;
- }
- reg[insn->reg].v = !reg[insn->reg].v;
- next_pc += sizeof(struct unary_op);
- break;
- }
- /* logical */
- case FILTER_OP_AND:
- {
- struct logical_op *insn = (struct logical_op *) pc;
-
- /* If REG_R0 is 0, skip and evaluate to 0 */
- if ((reg[REG_R0].type == REG_S64 && reg[REG_R0].v == 0)
- || (reg[REG_R0].type == REG_DOUBLE && reg[REG_R0].d == 0.0)) {
- dbg_printf("Jumping to bytecode offset %u\n",
- (unsigned int) insn->skip_offset);
- next_pc = start_pc + insn->skip_offset;
- } else {
- next_pc += sizeof(struct logical_op);
- }
- break;
- }
- case FILTER_OP_OR:
- {
- struct logical_op *insn = (struct logical_op *) pc;
-
- /* If REG_R0 is nonzero, skip and evaluate to 1 */
-
- if ((reg[REG_R0].type == REG_S64 && reg[REG_R0].v != 0)
- || (reg[REG_R0].type == REG_DOUBLE && reg[REG_R0].d != 0.0)) {
- reg[REG_R0].v = 1;
- dbg_printf("Jumping to bytecode offset %u\n",
- (unsigned int) insn->skip_offset);
- next_pc = start_pc + insn->skip_offset;
- } else {
- next_pc += sizeof(struct logical_op);
- }
- break;
- }
-
- /* load */
- case FILTER_OP_LOAD_FIELD_REF_STRING:
- {
- struct load_op *insn = (struct load_op *) pc;
- struct field_ref *ref = (struct field_ref *) insn->data;
-
- dbg_printf("load field ref offset %u type string\n",
- ref->offset);
- reg[insn->reg].str =
- *(const char * const *) &filter_stack_data[ref->offset];
- reg[insn->reg].type = REG_STRING;
- reg[insn->reg].seq_len = UINT_MAX;
- reg[insn->reg].literal = 0;
- dbg_printf("ref load string %s\n", reg[insn->reg].str);
- next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
- break;
- }
-
- case FILTER_OP_LOAD_FIELD_REF_SEQUENCE:
- {
- struct load_op *insn = (struct load_op *) pc;
- struct field_ref *ref = (struct field_ref *) insn->data;
-
- dbg_printf("load field ref offset %u type sequence\n",
- ref->offset);
- reg[insn->reg].seq_len =
- *(unsigned long *) &filter_stack_data[ref->offset];
- reg[insn->reg].str =
- *(const char **) (&filter_stack_data[ref->offset
- + sizeof(unsigned long)]);
- reg[insn->reg].type = REG_STRING;
- reg[insn->reg].literal = 0;
- next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
- break;
- }
-
- case FILTER_OP_LOAD_FIELD_REF_S64:
- {
- struct load_op *insn = (struct load_op *) pc;
- struct field_ref *ref = (struct field_ref *) insn->data;
-
- dbg_printf("load field ref offset %u type s64\n",
- ref->offset);
- memcpy(®[insn->reg].v, &filter_stack_data[ref->offset],
- sizeof(struct literal_numeric));
- reg[insn->reg].type = REG_S64;
- reg[insn->reg].literal = 0;
- dbg_printf("ref load s64 %" PRIi64 "\n", reg[insn->reg].v);
- next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
- break;
- }
-
- case FILTER_OP_LOAD_FIELD_REF_DOUBLE:
- {
- struct load_op *insn = (struct load_op *) pc;
- struct field_ref *ref = (struct field_ref *) insn->data;
-
- dbg_printf("load field ref offset %u type double\n",
- ref->offset);
- memcpy(®[insn->reg].d, &filter_stack_data[ref->offset],
- sizeof(struct literal_double));
- reg[insn->reg].type = REG_DOUBLE;
- reg[insn->reg].literal = 0;
- dbg_printf("ref load double %g\n", reg[insn->reg].d);
- next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
- break;
- }
-
- case FILTER_OP_LOAD_STRING:
- {
- struct load_op *insn = (struct load_op *) pc;
-
- dbg_printf("load string %s\n", insn->data);
- reg[insn->reg].str = insn->data;
- reg[insn->reg].type = REG_STRING;
- reg[insn->reg].seq_len = UINT_MAX;
- reg[insn->reg].literal = 1;
- next_pc += sizeof(struct load_op) + strlen(insn->data) + 1;
- break;
- }
-
- case FILTER_OP_LOAD_S64:
- {
- struct load_op *insn = (struct load_op *) pc;
-
- memcpy(®[insn->reg].v, insn->data,
- sizeof(struct literal_numeric));
- dbg_printf("load s64 %" PRIi64 "\n", reg[insn->reg].v);
- reg[insn->reg].type = REG_S64;
- next_pc += sizeof(struct load_op)
- + sizeof(struct literal_numeric);
- break;
- }
-
- case FILTER_OP_LOAD_DOUBLE:
- {
- struct load_op *insn = (struct load_op *) pc;
-
- memcpy(®[insn->reg].d, insn->data,
- sizeof(struct literal_double));
- dbg_printf("load s64 %g\n", reg[insn->reg].d);
- reg[insn->reg].type = REG_DOUBLE;
- next_pc += sizeof(struct load_op)
- + sizeof(struct literal_double);
- break;
- }
- }
- }
-end:
- /* return 0 (discard) on error */
- if (ret)
- return 0;
- return retval;
-}
-
-static
-int bin_op_compare_check(struct vreg reg[NR_REG], const char *str)
-{
- switch (reg[REG_R0].type) {
- default:
- goto error_unknown;
-
- case REG_STRING:
- switch (reg[REG_R1].type) {
- default:
- goto error_unknown;
-
- case REG_STRING:
- break;
- case REG_S64:
- case REG_DOUBLE:
- goto error_mismatch;
- }
- break;
- case REG_S64:
- case REG_DOUBLE:
- switch (reg[REG_R1].type) {
- default:
- goto error_unknown;
-
- case REG_STRING:
- goto error_mismatch;
-
- case REG_S64:
- case REG_DOUBLE:
- break;
- }
- break;
- }
- return 0;
-
-error_unknown:
-
- return -EINVAL;
-error_mismatch:
- ERR("type mismatch for '%s' binary operator\n", str);
- return -EINVAL;
-}
-
-static
-int lttng_filter_validate_bytecode(struct bytecode_runtime *bytecode)
-{
- void *pc, *next_pc, *start_pc;
- int ret = -EINVAL;
- struct vreg reg[NR_REG];
- int i;
-
- for (i = 0; i < NR_REG; i++) {
- reg[i].type = REG_TYPE_UNKNOWN;
- reg[i].literal = 0;
- }
-
- start_pc = &bytecode->data[0];
- for (pc = next_pc = start_pc; pc - start_pc < bytecode->len;
- pc = next_pc) {
- if (unlikely(pc >= start_pc + bytecode->len)) {
- ERR("filter bytecode overflow\n");
- ret = -EINVAL;
- goto end;
- }
- dbg_printf("Validating op %s (%u)\n",
- print_op((unsigned int) *(filter_opcode_t *) pc),
- (unsigned int) *(filter_opcode_t *) pc);
- switch (*(filter_opcode_t *) pc) {
- case FILTER_OP_UNKNOWN:
- default:
- ERR("unknown bytecode op %u\n",
- (unsigned int) *(filter_opcode_t *) pc);
- ret = -EINVAL;
- goto end;
-
- case FILTER_OP_RETURN:
- ret = 0;
- goto end;
-
- /* binary */
- case FILTER_OP_MUL:
- case FILTER_OP_DIV:
- case FILTER_OP_MOD:
- case FILTER_OP_PLUS:
- case FILTER_OP_MINUS:
- case FILTER_OP_RSHIFT:
- case FILTER_OP_LSHIFT:
- case FILTER_OP_BIN_AND:
- case FILTER_OP_BIN_OR:
- case FILTER_OP_BIN_XOR:
- ERR("unsupported bytecode op %u\n",
- (unsigned int) *(filter_opcode_t *) pc);
- ret = -EINVAL;
- goto end;
-
- case FILTER_OP_EQ:
- {
- ret = bin_op_compare_check(reg, "==");
- if (ret)
- goto end;
- reg[REG_R0].type = REG_S64;
- next_pc += sizeof(struct binary_op);
- break;
- }
- case FILTER_OP_NE:
- {
- ret = bin_op_compare_check(reg, "!=");
- if (ret)
- goto end;
- reg[REG_R0].type = REG_S64;
- next_pc += sizeof(struct binary_op);
- break;
- }
- case FILTER_OP_GT:
- {
- ret = bin_op_compare_check(reg, ">");
- if (ret)
- goto end;
- reg[REG_R0].type = REG_S64;
- next_pc += sizeof(struct binary_op);
- break;
- }
- case FILTER_OP_LT:
- {
- ret = bin_op_compare_check(reg, "<");
- if (ret)
- goto end;
- reg[REG_R0].type = REG_S64;
- next_pc += sizeof(struct binary_op);
- break;
- }
- case FILTER_OP_GE:
- {
- ret = bin_op_compare_check(reg, ">=");
- if (ret)
- goto end;
- reg[REG_R0].type = REG_S64;
- next_pc += sizeof(struct binary_op);
- break;
- }
- case FILTER_OP_LE:
- {
- ret = bin_op_compare_check(reg, "<=");
- if (ret)
- goto end;
- reg[REG_R0].type = REG_S64;
- next_pc += sizeof(struct binary_op);
- break;
- }
-
- /* unary */
- case FILTER_OP_UNARY_PLUS:
- case FILTER_OP_UNARY_MINUS:
- case FILTER_OP_UNARY_NOT:
- {
- struct unary_op *insn = (struct unary_op *) pc;
-
- if (unlikely(insn->reg >= REG_ERROR)) {
- ERR("invalid register %u\n",
- (unsigned int) insn->reg);
- ret = -EINVAL;
- goto end;
- }
- switch (reg[insn->reg].type) {
- default:
- ERR("unknown register type\n");
- ret = -EINVAL;
- goto end;
-
- case REG_STRING:
- ERR("Unary op can only be applied to numeric or floating point registers\n");
- ret = -EINVAL;
- goto end;
- case REG_S64:
- break;
- case REG_DOUBLE:
- break;
- }
- next_pc += sizeof(struct unary_op);
- break;
- }
- /* logical */
- case FILTER_OP_AND:
- case FILTER_OP_OR:
- {
- struct logical_op *insn = (struct logical_op *) pc;
-
- if (unlikely(reg[REG_R0].type == REG_TYPE_UNKNOWN
- || reg[REG_R0].type == REG_TYPE_UNKNOWN
- || reg[REG_R0].type == REG_STRING
- || reg[REG_R1].type == REG_STRING)) {
- ERR("Logical comparator can only be applied to numeric and floating point registers\n");
- ret = -EINVAL;
- goto end;
- }
-
- dbg_printf("Validate jumping to bytecode offset %u\n",
- (unsigned int) insn->skip_offset);
- if (unlikely(start_pc + insn->skip_offset <= pc)) {
- ERR("Loops are not allowed in bytecode\n");
- ret = -EINVAL;
- goto end;
- }
- next_pc += sizeof(struct logical_op);
- break;
- }
-
- /* load */
- case FILTER_OP_LOAD_FIELD_REF:
- {
- ERR("Unknown field ref type\n");
- ret = -EINVAL;
- goto end;
- }
- case FILTER_OP_LOAD_FIELD_REF_STRING:
- case FILTER_OP_LOAD_FIELD_REF_SEQUENCE:
- {
- struct load_op *insn = (struct load_op *) pc;
- struct field_ref *ref = (struct field_ref *) insn->data;
-
- if (unlikely(insn->reg >= REG_ERROR)) {
- ERR("invalid register %u\n",
- (unsigned int) insn->reg);
- ret = -EINVAL;
- goto end;
- }
- dbg_printf("Validate load field ref offset %u type string\n",
- ref->offset);
- reg[insn->reg].type = REG_STRING;
- reg[insn->reg].literal = 0;
- next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
- break;
- }
- case FILTER_OP_LOAD_FIELD_REF_S64:
- {
- struct load_op *insn = (struct load_op *) pc;
- struct field_ref *ref = (struct field_ref *) insn->data;
-
- if (unlikely(insn->reg >= REG_ERROR)) {
- ERR("invalid register %u\n",
- (unsigned int) insn->reg);
- ret = -EINVAL;
- goto end;
- }
- dbg_printf("Validate load field ref offset %u type s64\n",
- ref->offset);
- reg[insn->reg].type = REG_S64;
- reg[insn->reg].literal = 0;
- next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
- break;
- }
- case FILTER_OP_LOAD_FIELD_REF_DOUBLE:
- {
- struct load_op *insn = (struct load_op *) pc;
- struct field_ref *ref = (struct field_ref *) insn->data;
-
- if (unlikely(insn->reg >= REG_ERROR)) {
- ERR("invalid register %u\n",
- (unsigned int) insn->reg);
- ret = -EINVAL;
- goto end;
- }
- dbg_printf("Validate load field ref offset %u type double\n",
- ref->offset);
- reg[insn->reg].type = REG_DOUBLE;
- reg[insn->reg].literal = 0;
- next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
- break;
- }
-
- case FILTER_OP_LOAD_STRING:
- {
- struct load_op *insn = (struct load_op *) pc;
-
- if (unlikely(insn->reg >= REG_ERROR)) {
- ERR("invalid register %u\n",
- (unsigned int) insn->reg);
- ret = -EINVAL;
- goto end;
- }
- reg[insn->reg].type = REG_STRING;
- reg[insn->reg].literal = 1;
- next_pc += sizeof(struct load_op) + strlen(insn->data) + 1;
- break;
- }
-
- case FILTER_OP_LOAD_S64:
- {
- struct load_op *insn = (struct load_op *) pc;
-
- if (unlikely(insn->reg >= REG_ERROR)) {
- ERR("invalid register %u\n",
- (unsigned int) insn->reg);
- ret = -EINVAL;
- goto end;
- }
- reg[insn->reg].type = REG_S64;
- next_pc += sizeof(struct load_op)
- + sizeof(struct literal_numeric);
- break;
- }
-
- case FILTER_OP_LOAD_DOUBLE:
- {
- struct load_op *insn = (struct load_op *) pc;
-
- if (unlikely(insn->reg >= REG_ERROR)) {
- ERR("invalid register %u\n",
- (unsigned int) insn->reg);
- ret = -EINVAL;
- goto end;
- }
- reg[insn->reg].type = REG_DOUBLE;
- next_pc += sizeof(struct load_op)
- + sizeof(struct literal_double);
- break;
- }
- }
- }
-end:
- return ret;
-}
-
-static
-int apply_field_reloc(struct ltt_event *event,