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Organize the operators into a smaller more familiar set. #620

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6 changes: 3 additions & 3 deletions AstSemantics.md
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Expand Up @@ -26,12 +26,12 @@ The evaluation order of child nodes is deterministic.
All nodes other than control flow constructs need to evaluate their child nodes
in the order they appear in the serialized AST.

For example, the s-expression presentation of the `i32.add` node
`(i32.add (set_local $x (i32.const 1)) (set_local $x (i32.const 2)))`
For example, the s-expression presentation of the `add` node
`(add (set_local $x (i32.const 1)) (set_local $x (const 2)))`
would first evaluate the child node `(set_local $x (i32.const 1))` and
afterwards the child node `(set_local $x (i32.const 2))`.

The value of the local variable $x will be `2` after the `i32.add` node is fully
The value of the local variable $x will be `2` after the `add` node is fully
evaluated.

## Traps
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214 changes: 66 additions & 148 deletions BinaryEncoding.md
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Expand Up @@ -56,8 +56,8 @@ Refers to an approach for encoding syntax trees, where each node begins with an
sequence, then followed recursively by any child nodes.

* Examples
* Given a simple AST node: `I32Add(left: AstNode, right: AstNode)`
* First write the opcode for `I32Add` (uint8)
* Given a simple AST node: `Add(left: AstNode, right: AstNode)`
* First write the opcode for `Add` (uint8)
* Then recursively write the left and right nodes.

* Given a call AST node: `Call(callee_index: uint32_t, args: AstNode[])`
Expand Down Expand Up @@ -357,29 +357,17 @@ out of range, `br_table` branches to the default target.

| Name | Opcode | Immediate | Description |
| ---- | ---- | ---- | ---- |
| `i32.load8_s` | `0x20` | `memory_immediate` | load from memory |
| `i32.load8_u` | `0x21` | `memory_immediate` | load from memory |
| `i32.load16_s` | `0x22` | `memory_immediate` | load from memory |
| `i32.load16_u` | `0x23` | `memory_immediate` | load from memory |
| `i64.load8_s` | `0x24` | `memory_immediate` | load from memory |
| `i64.load8_u` | `0x25` | `memory_immediate` | load from memory |
| `i64.load16_s` | `0x26` | `memory_immediate` | load from memory |
| `i64.load16_u` | `0x27` | `memory_immediate` | load from memory |
| `i64.load32_s` | `0x28` | `memory_immediate` | load from memory |
| `i64.load32_u` | `0x29` | `memory_immediate` | load from memory |
| `i32.load` | `0x2a` | `memory_immediate` | load from memory |
| `i64.load` | `0x2b` | `memory_immediate` | load from memory |
| `f32.load` | `0x2c` | `memory_immediate` | load from memory |
| `f64.load` | `0x2d` | `memory_immediate` | load from memory |
| `i32.store8` | `0x2e` | `memory_immediate` | store to memory |
| `i32.store16` | `0x2f` | `memory_immediate` | store to memory |
| `i64.store8` | `0x30` | `memory_immediate` | store to memory |
| `i64.store16` | `0x31` | `memory_immediate` | store to memory |
| `i64.store32` | `0x32` | `memory_immediate` | store to memory |
| `i32.store` | `0x33` | `memory_immediate` | store to memory |
| `i64.store` | `0x34` | `memory_immediate` | store to memory |
| `f32.store` | `0x35` | `memory_immediate` | store to memory |
| `f64.store` | `0x36` | `memory_immediate` | store to memory |
| `load8_s` | `0x20` | `memory_immediate` | load from memory. i32, i64 |
| `load8_u` | `0x21` | `memory_immediate` | load from memory. u32, u64 |
| `load16_s` | `0x22` | `memory_immediate` | load from memory. i32, i64 |
| `load16_u` | `0x23` | `memory_immediate` | load from memory. u32, u64 |
| `load32_s` | `0x28` | `memory_immediate` | load from memory. i64 |
| `load32_u` | `0x29` | `memory_immediate` | load from memory. u64 |
| `load` | `0x2a` | `memory_immediate` | load from memory. i32, i64, f32, f64 |
| `store8` | `0x2e` | `memory_immediate` | store to memory. i32, i64 |
| `store16` | `0x2f` | `memory_immediate` | store to memory. i32, i64 |
| `store32` | `0x32` | `memory_immediate` | store to memory. i64 |
| `store` | `0x33` | `memory_immediate` | store to memory. i32, i64, f32, f64 |
| `memory_size` | `0x3b` | | query the size of memory |
| `grow_memory` | `0x39` | | grow the size of memory |

Expand All @@ -400,128 +388,58 @@ natural alignment. Thus, for any given memory access op, the bits after the

| Name | Opcode | Immediate | Description |
| ---- | ---- | ---- | ---- |
| `i32.add` | `0x40` | | |
| `i32.sub` | `0x41` | | |
| `i32.mul` | `0x42` | | |
| `i32.div_s` | `0x43` | | |
| `i32.div_u` | `0x44` | | |
| `i32.rem_s` | `0x45` | | |
| `i32.rem_u` | `0x46` | | |
| `i32.and` | `0x47` | | |
| `i32.or` | `0x48` | | |
| `i32.xor` | `0x49` | | |
| `i32.shl` | `0x4a` | | |
| `i32.shr_u` | `0x4b` | | |
| `i32.shr_s` | `0x4c` | | |
| `i32.rotr` | `0xb6` | | |
| `i32.rotl` | `0xb7` | | |
| `i32.eq` | `0x4d` | | |
| `i32.ne` | `0x4e` | | |
| `i32.lt_s` | `0x4f` | | |
| `i32.le_s` | `0x50` | | |
| `i32.lt_u` | `0x51` | | |
| `i32.le_u` | `0x52` | | |
| `i32.gt_s` | `0x53` | | |
| `i32.ge_s` | `0x54` | | |
| `i32.gt_u` | `0x55` | | |
| `i32.ge_u` | `0x56` | | |
| `i32.clz` | `0x57` | | |
| `i32.ctz` | `0x58` | | |
| `i32.popcnt` | `0x59` | | |
| `i32.eqz` | `0x5a` | | |
| `i64.add` | `0x5b` | | |
| `i64.sub` | `0x5c` | | |
| `i64.mul` | `0x5d` | | |
| `i64.div_s` | `0x5e` | | |
| `i64.div_u` | `0x5f` | | |
| `i64.rem_s` | `0x60` | | |
| `i64.rem_u` | `0x61` | | |
| `i64.and` | `0x62` | | |
| `i64.or` | `0x63` | | |
| `i64.xor` | `0x64` | | |
| `i64.shl` | `0x65` | | |
| `i64.shr_u` | `0x66` | | |
| `i64.shr_s` | `0x67` | | |
| `i64.rotr` | `0xb8` | | |
| `i64.rotl` | `0xb9` | | |
| `i64.eq` | `0x68` | | |
| `i64.ne` | `0x69` | | |
| `i64.lt_s` | `0x6a` | | |
| `i64.le_s` | `0x6b` | | |
| `i64.lt_u` | `0x6c` | | |
| `i64.le_u` | `0x6d` | | |
| `i64.gt_s` | `0x6e` | | |
| `i64.ge_s` | `0x6f` | | |
| `i64.gt_u` | `0x70` | | |
| `i64.ge_u` | `0x71` | | |
| `i64.clz` | `0x72` | | |
| `i64.ctz` | `0x73` | | |
| `i64.popcnt` | `0x74` | | |
| `i64.eqz` | `0xba` | | |
| `f32.add` | `0x75` | | |
| `f32.sub` | `0x76` | | |
| `f32.mul` | `0x77` | | |
| `f32.div` | `0x78` | | |
| `f32.min` | `0x79` | | |
| `f32.max` | `0x7a` | | |
| `f32.abs` | `0x7b` | | |
| `f32.neg` | `0x7c` | | |
| `f32.copysign` | `0x7d` | | |
| `f32.ceil` | `0x7e` | | |
| `f32.floor` | `0x7f` | | |
| `f32.trunc` | `0x80` | | |
| `f32.nearest` | `0x81` | | |
| `f32.sqrt` | `0x82` | | |
| `f32.eq` | `0x83` | | |
| `f32.ne` | `0x84` | | |
| `f32.lt` | `0x85` | | |
| `f32.le` | `0x86` | | |
| `f32.gt` | `0x87` | | |
| `f32.ge` | `0x88` | | |
| `f64.add` | `0x89` | | |
| `f64.sub` | `0x8a` | | |
| `f64.mul` | `0x8b` | | |
| `f64.div` | `0x8c` | | |
| `f64.min` | `0x8d` | | |
| `f64.max` | `0x8e` | | |
| `f64.abs` | `0x8f` | | |
| `f64.neg` | `0x90` | | |
| `f64.copysign` | `0x91` | | |
| `f64.ceil` | `0x92` | | |
| `f64.floor` | `0x93` | | |
| `f64.trunc` | `0x94` | | |
| `f64.nearest` | `0x95` | | |
| `f64.sqrt` | `0x96` | | |
| `f64.eq` | `0x97` | | |
| `f64.ne` | `0x98` | | |
| `f64.lt` | `0x99` | | |
| `f64.le` | `0x9a` | | |
| `f64.gt` | `0x9b` | | |
| `f64.ge` | `0x9c` | | |
| `i32.trunc_s/f32` | `0x9d` | | |
| `i32.trunc_s/f64` | `0x9e` | | |
| `i32.trunc_u/f32` | `0x9f` | | |
| `i32.trunc_u/f64` | `0xa0` | | |
| `i32.wrap/i64` | `0xa1` | | |
| `i64.trunc_s/f32` | `0xa2` | | |
| `i64.trunc_s/f64` | `0xa3` | | |
| `i64.trunc_u/f32` | `0xa4` | | |
| `i64.trunc_u/f64` | `0xa5` | | |
| `i64.extend_s/i32` | `0xa6` | | |
| `i64.extend_u/i32` | `0xa7` | | |
| `f32.convert_s/i32` | `0xa8` | | |
| `f32.convert_u/i32` | `0xa9` | | |
| `f32.convert_s/i64` | `0xaa` | | |
| `f32.convert_u/i64` | `0xab` | | |
| `f32.demote/f64` | `0xac` | | |
| `f32.reinterpret/i32` | `0xad` | | |
| `f64.convert_s/i32` | `0xae` | | |
| `f64.convert_u/i32` | `0xaf` | | |
| `f64.convert_s/i64` | `0xb0` | | |
| `f64.convert_u/i64` | `0xb1` | | |
| `f64.promote/f32` | `0xb2` | | |
| `f64.reinterpret/i64` | `0xb3` | | |
| `i32.reinterpret/f32` | `0xb4` | | |
| `i64.reinterpret/f64` | `0xb5` | | |
| `add` | `0x40` | | i32, i64, f32, f64 |
| `sub` | `0x41` | | i32, i64, f32, f64 |
| `mul` | `0x42` | | i32, i64, f32, f64 |
| `div_s` | `0x43` | | i32, i64 |
| `div_u` | `0x44` | | i32, i64 |
| `rem_s` | `0x45` | | i32, i64 |
| `rem_u` | `0x46` | | i32, i64 |
| `and` | `0x47` | | i32, i64 |
| `or` | `0x48` | | i32, i64 |
| `xor` | `0x49` | | i32, i64 |
| `shl` | `0x4a` | | i32, i64 |
| `shr_u` | `0x4b` | | i32, i64 |
| `shr_s` | `0x4c` | | i32, i64 |
| `rotr` | `0xb6` | | i32, i64 |
| `rotl` | `0xb7` | | i32, i64 |
| `eq` | `0x4d` | | i32, i64, f32, f64 -> i32 |
| `ne` | `0x4e` | | i32, i64, f32, f64 -> i32 |
| `lt_s` | `0x4f` | | i32, i64, f32, f64 -> i32 |
| `le_s` | `0x50` | | i32, i64, f32, f64 -> i32 |
| `lt_u` | `0x51` | | i32, i64 -> i32 |
| `le_u` | `0x52` | | i32, i64 -> i32 |
| `gt_s` | `0x53` | | i32, i64, f32, f64 -> i32 |
| `ge_s` | `0x54` | | i32, i64, f32, f64 -> i32 |
| `gt_u` | `0x55` | | i32, i64 -> i32 |
| `ge_u` | `0x56` | | i32, i64 -> i32 |
| `clz` | `0x57` | | i32, i64 |
| `popcnt` | `0x59` | | i32, i64 |
| `eqz` | `0x5a` | | i32, i64 |
| `min` | `0x79` | | f32, f64 |
| `max` | `0x7a` | | f32, f64 |
| `abs` | `0x7b` | | f32, f64 |
| `neg` | `0x7c` | | f32, f64 |
| `fcopysign` | `0x7d` | | f32, f64 |
| `fceil` | `0x7e` | | f32, f64 |
| `ffloor` | `0x7f` | | f32, f64 |
| `ftrunc` | `0x80` | | f32, f64 |
| `fnearest` | `0x81` | | f32, f64 |
| `fsqrt` | `0x82` | | f32, f64 |
| `i32.trunc_s` | `0x9d` | | f32, f64 -> i32 |
| `i32.trunc_u` | `0x9f` | | f32, f64 -> u32 |
| `i32.wrap/i64` | `0xa1` | | i64 -> i32 |
| `i64.trunc_s` | `0xa2` | | f32, f64 -> i64 |
| `i64.trunc_u` | `0xa4` | | f32, f64 -> u64 |
| `i64.extend_s` | `0xa6` | | i32 -> i64 |
| `i64.extend_u` | `0xa7` | | u32 -> i64 |
| `f32.convert_s` | `0xa8` | | i32, i64, f64 -> f32 |
| `f32.convert_u` | `0xa9` | | u32, u64 -> f32 |
| `f32.reinterpret/i32` | `0xad` | | i32 -> f32 |
| `f64.convert_s` | `0xae` | | i32, i64, f32 -> f64 |
| `f64.convert_u` | `0xaf` | | u32, u64 -> f64 |
| `f64.reinterpret/i64` | `0xb3` | | i64 -> f64 |
| `i32.reinterpret/f32` | `0xb4` | | f32 -> i32 |
| `i64.reinterpret/f64` | `0xb5` | | f64 -> i64 |