+ /* get context ref */
+ 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_field *ctx_field;
+ union lttng_ctx_value v;
+
+ dbg_printf("get context ref offset %u type string\n",
+ ref->offset);
+ ctx_field = &ctx->fields[ref->offset];
+ ctx_field->get_value(ctx_field, &v);
+ estack_push(stack, top, ax, bx);
+ estack_ax(stack, top)->u.s.str = v.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 = UINT_MAX;
+ estack_ax(stack, top)->u.s.literal = 0;
+ 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_field *ctx_field;
+ union lttng_ctx_value v;
+
+ dbg_printf("get context ref offset %u type s64\n",
+ ref->offset);
+ ctx_field = &ctx->fields[ref->offset];
+ ctx_field->get_value(ctx_field, &v);
+ estack_push(stack, top, ax, bx);
+ estack_ax_v = v.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_field *ctx_field;
+ union lttng_ctx_value v;
+
+ dbg_printf("get context ref offset %u type double\n",
+ ref->offset);
+ ctx_field = &ctx->fields[ref->offset];
+ ctx_field->get_value(ctx_field, &v);
+ estack_push(stack, top, ax, bx);
+ memcpy(&estack_ax(stack, top)->u.d, &v.d, sizeof(struct literal_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;
+ }
+