Filter: Implement stack-based interpreter

[lttng-ust.git] / liblttng-ust / filter-bytecode.h

diff --git a/liblttng-ust/filter-bytecode.h b/liblttng-ust/filter-bytecode.h
index 1c51eb0935443cddb32f2655c29c8fddf7a97f20..50a60c69da46923706149152eff512b71666546e 100644 (file)
--- a/liblttng-ust/filter-bytecode.h
+++ b/liblttng-ust/filter-bytecode.h
@@ -28,12 +28,6 @@
  * offsets are absolute from start of bytecode.
  */
 
-enum filter_register {
-       REG_R0 = 0,
-       REG_R1 = 1,
-       REG_ERROR,
-};
-
 struct field_ref {
        /* Initially, symbol offset. After link, field offset. */
        uint16_t offset;
@@ -126,6 +120,11 @@ enum filter_op {
        FILTER_OP_LOAD_S64,
        FILTER_OP_LOAD_DOUBLE,
 
+       /* cast */
+       FILTER_OP_CAST_TO_S64,
+       FILTER_OP_CAST_DOUBLE_TO_S64,
+       FILTER_OP_CAST_NOP,
+
        NR_FILTER_OPS,
 };
 
@@ -133,7 +132,6 @@ typedef uint8_t filter_opcode_t;
 
 struct load_op {
        filter_opcode_t op;
-       uint8_t reg;            /* enum filter_register */
        char data[0];
        /* data to load. Size known by enum filter_opcode and null-term char. */
 } __attribute__((packed));
@@ -144,7 +142,6 @@ struct binary_op {
 
 struct unary_op {
        filter_opcode_t op;
-       uint8_t reg;            /* enum filter_register */
 } __attribute__((packed));
 
 /* skip_offset is absolute from start of bytecode */
@@ -153,6 +150,10 @@ struct logical_op {
        uint16_t skip_offset;   /* bytecode insn, if skip second test */
 } __attribute__((packed));
 
+struct cast_op {
+       filter_opcode_t op;
+} __attribute__((packed));
+
 struct return_op {
        filter_opcode_t op;
 } __attribute__((packed));