struct wasm [src]

Alias for std.wasm

Members

Source

///! Contains all constants and types representing the wasm ///! binary format, as specified by: ///! https://webassembly.github.io/spec/core/ const std = @import("std.zig"); const testing = std.testing; /// Wasm instruction opcodes /// /// All instructions are defined as per spec: /// https://webassembly.github.io/spec/core/appendix/index-instructions.html pub const Opcode = enum(u8) { @"unreachable" = 0x00, nop = 0x01, block = 0x02, loop = 0x03, @"if" = 0x04, @"else" = 0x05, end = 0x0B, br = 0x0C, br_if = 0x0D, br_table = 0x0E, @"return" = 0x0F, call = 0x10, call_indirect = 0x11, drop = 0x1A, select = 0x1B, local_get = 0x20, local_set = 0x21, local_tee = 0x22, global_get = 0x23, global_set = 0x24, i32_load = 0x28, i64_load = 0x29, f32_load = 0x2A, f64_load = 0x2B, i32_load8_s = 0x2C, i32_load8_u = 0x2D, i32_load16_s = 0x2E, i32_load16_u = 0x2F, i64_load8_s = 0x30, i64_load8_u = 0x31, i64_load16_s = 0x32, i64_load16_u = 0x33, i64_load32_s = 0x34, i64_load32_u = 0x35, i32_store = 0x36, i64_store = 0x37, f32_store = 0x38, f64_store = 0x39, i32_store8 = 0x3A, i32_store16 = 0x3B, i64_store8 = 0x3C, i64_store16 = 0x3D, i64_store32 = 0x3E, memory_size = 0x3F, memory_grow = 0x40, i32_const = 0x41, i64_const = 0x42, f32_const = 0x43, f64_const = 0x44, i32_eqz = 0x45, i32_eq = 0x46, i32_ne = 0x47, i32_lt_s = 0x48, i32_lt_u = 0x49, i32_gt_s = 0x4A, i32_gt_u = 0x4B, i32_le_s = 0x4C, i32_le_u = 0x4D, i32_ge_s = 0x4E, i32_ge_u = 0x4F, i64_eqz = 0x50, i64_eq = 0x51, i64_ne = 0x52, i64_lt_s = 0x53, i64_lt_u = 0x54, i64_gt_s = 0x55, i64_gt_u = 0x56, i64_le_s = 0x57, i64_le_u = 0x58, i64_ge_s = 0x59, i64_ge_u = 0x5A, f32_eq = 0x5B, f32_ne = 0x5C, f32_lt = 0x5D, f32_gt = 0x5E, f32_le = 0x5F, f32_ge = 0x60, f64_eq = 0x61, f64_ne = 0x62, f64_lt = 0x63, f64_gt = 0x64, f64_le = 0x65, f64_ge = 0x66, i32_clz = 0x67, i32_ctz = 0x68, i32_popcnt = 0x69, i32_add = 0x6A, i32_sub = 0x6B, i32_mul = 0x6C, i32_div_s = 0x6D, i32_div_u = 0x6E, i32_rem_s = 0x6F, i32_rem_u = 0x70, i32_and = 0x71, i32_or = 0x72, i32_xor = 0x73, i32_shl = 0x74, i32_shr_s = 0x75, i32_shr_u = 0x76, i32_rotl = 0x77, i32_rotr = 0x78, i64_clz = 0x79, i64_ctz = 0x7A, i64_popcnt = 0x7B, i64_add = 0x7C, i64_sub = 0x7D, i64_mul = 0x7E, i64_div_s = 0x7F, i64_div_u = 0x80, i64_rem_s = 0x81, i64_rem_u = 0x82, i64_and = 0x83, i64_or = 0x84, i64_xor = 0x85, i64_shl = 0x86, i64_shr_s = 0x87, i64_shr_u = 0x88, i64_rotl = 0x89, i64_rotr = 0x8A, f32_abs = 0x8B, f32_neg = 0x8C, f32_ceil = 0x8D, f32_floor = 0x8E, f32_trunc = 0x8F, f32_nearest = 0x90, f32_sqrt = 0x91, f32_add = 0x92, f32_sub = 0x93, f32_mul = 0x94, f32_div = 0x95, f32_min = 0x96, f32_max = 0x97, f32_copysign = 0x98, f64_abs = 0x99, f64_neg = 0x9A, f64_ceil = 0x9B, f64_floor = 0x9C, f64_trunc = 0x9D, f64_nearest = 0x9E, f64_sqrt = 0x9F, f64_add = 0xA0, f64_sub = 0xA1, f64_mul = 0xA2, f64_div = 0xA3, f64_min = 0xA4, f64_max = 0xA5, f64_copysign = 0xA6, i32_wrap_i64 = 0xA7, i32_trunc_f32_s = 0xA8, i32_trunc_f32_u = 0xA9, i32_trunc_f64_s = 0xAA, i32_trunc_f64_u = 0xAB, i64_extend_i32_s = 0xAC, i64_extend_i32_u = 0xAD, i64_trunc_f32_s = 0xAE, i64_trunc_f32_u = 0xAF, i64_trunc_f64_s = 0xB0, i64_trunc_f64_u = 0xB1, f32_convert_i32_s = 0xB2, f32_convert_i32_u = 0xB3, f32_convert_i64_s = 0xB4, f32_convert_i64_u = 0xB5, f32_demote_f64 = 0xB6, f64_convert_i32_s = 0xB7, f64_convert_i32_u = 0xB8, f64_convert_i64_s = 0xB9, f64_convert_i64_u = 0xBA, f64_promote_f32 = 0xBB, i32_reinterpret_f32 = 0xBC, i64_reinterpret_f64 = 0xBD, f32_reinterpret_i32 = 0xBE, f64_reinterpret_i64 = 0xBF, i32_extend8_s = 0xC0, i32_extend16_s = 0xC1, i64_extend8_s = 0xC2, i64_extend16_s = 0xC3, i64_extend32_s = 0xC4, misc_prefix = 0xFC, simd_prefix = 0xFD, atomics_prefix = 0xFE, _, }; /// Opcodes that require a prefix `0xFC`. /// Each opcode represents a varuint32, meaning /// they are encoded as leb128 in binary. pub const MiscOpcode = enum(u32) { i32_trunc_sat_f32_s = 0x00, i32_trunc_sat_f32_u = 0x01, i32_trunc_sat_f64_s = 0x02, i32_trunc_sat_f64_u = 0x03, i64_trunc_sat_f32_s = 0x04, i64_trunc_sat_f32_u = 0x05, i64_trunc_sat_f64_s = 0x06, i64_trunc_sat_f64_u = 0x07, memory_init = 0x08, data_drop = 0x09, memory_copy = 0x0A, memory_fill = 0x0B, table_init = 0x0C, elem_drop = 0x0D, table_copy = 0x0E, table_grow = 0x0F, table_size = 0x10, table_fill = 0x11, _, }; /// Simd opcodes that require a prefix `0xFD`. /// Each opcode represents a varuint32, meaning /// they are encoded as leb128 in binary. pub const SimdOpcode = enum(u32) { v128_load = 0x00, v128_load8x8_s = 0x01, v128_load8x8_u = 0x02, v128_load16x4_s = 0x03, v128_load16x4_u = 0x04, v128_load32x2_s = 0x05, v128_load32x2_u = 0x06, v128_load8_splat = 0x07, v128_load16_splat = 0x08, v128_load32_splat = 0x09, v128_load64_splat = 0x0A, v128_store = 0x0B, v128_const = 0x0C, i8x16_shuffle = 0x0D, i8x16_swizzle = 0x0E, i8x16_splat = 0x0F, i16x8_splat = 0x10, i32x4_splat = 0x11, i64x2_splat = 0x12, f32x4_splat = 0x13, f64x2_splat = 0x14, i8x16_extract_lane_s = 0x15, i8x16_extract_lane_u = 0x16, i8x16_replace_lane = 0x17, i16x8_extract_lane_s = 0x18, i16x8_extract_lane_u = 0x19, i16x8_replace_lane = 0x1A, i32x4_extract_lane = 0x1B, i32x4_replace_lane = 0x1C, i64x2_extract_lane = 0x1D, i64x2_replace_lane = 0x1E, f32x4_extract_lane = 0x1F, f32x4_replace_lane = 0x20, f64x2_extract_lane = 0x21, f64x2_replace_lane = 0x22, i8x16_eq = 0x23, i16x8_eq = 0x2D, i32x4_eq = 0x37, i8x16_ne = 0x24, i16x8_ne = 0x2E, i32x4_ne = 0x38, i8x16_lt_s = 0x25, i16x8_lt_s = 0x2F, i32x4_lt_s = 0x39, i8x16_lt_u = 0x26, i16x8_lt_u = 0x30, i32x4_lt_u = 0x3A, i8x16_gt_s = 0x27, i16x8_gt_s = 0x31, i32x4_gt_s = 0x3B, i8x16_gt_u = 0x28, i16x8_gt_u = 0x32, i32x4_gt_u = 0x3C, i8x16_le_s = 0x29, i16x8_le_s = 0x33, i32x4_le_s = 0x3D, i8x16_le_u = 0x2A, i16x8_le_u = 0x34, i32x4_le_u = 0x3E, i8x16_ge_s = 0x2B, i16x8_ge_s = 0x35, i32x4_ge_s = 0x3F, i8x16_ge_u = 0x2C, i16x8_ge_u = 0x36, i32x4_ge_u = 0x40, f32x4_eq = 0x41, f64x2_eq = 0x47, f32x4_ne = 0x42, f64x2_ne = 0x48, f32x4_lt = 0x43, f64x2_lt = 0x49, f32x4_gt = 0x44, f64x2_gt = 0x4A, f32x4_le = 0x45, f64x2_le = 0x4B, f32x4_ge = 0x46, f64x2_ge = 0x4C, v128_not = 0x4D, v128_and = 0x4E, v128_andnot = 0x4F, v128_or = 0x50, v128_xor = 0x51, v128_bitselect = 0x52, v128_any_true = 0x53, v128_load8_lane = 0x54, v128_load16_lane = 0x55, v128_load32_lane = 0x56, v128_load64_lane = 0x57, v128_store8_lane = 0x58, v128_store16_lane = 0x59, v128_store32_lane = 0x5A, v128_store64_lane = 0x5B, v128_load32_zero = 0x5C, v128_load64_zero = 0x5D, f32x4_demote_f64x2_zero = 0x5E, f64x2_promote_low_f32x4 = 0x5F, i8x16_abs = 0x60, i16x8_abs = 0x80, i32x4_abs = 0xA0, i64x2_abs = 0xC0, i8x16_neg = 0x61, i16x8_neg = 0x81, i32x4_neg = 0xA1, i64x2_neg = 0xC1, i8x16_popcnt = 0x62, i16x8_q15mulr_sat_s = 0x82, i8x16_all_true = 0x63, i16x8_all_true = 0x83, i32x4_all_true = 0xA3, i64x2_all_true = 0xC3, i8x16_bitmask = 0x64, i16x8_bitmask = 0x84, i32x4_bitmask = 0xA4, i64x2_bitmask = 0xC4, i8x16_narrow_i16x8_s = 0x65, i16x8_narrow_i32x4_s = 0x85, i8x16_narrow_i16x8_u = 0x66, i16x8_narrow_i32x4_u = 0x86, f32x4_ceil = 0x67, i16x8_extend_low_i8x16_s = 0x87, i32x4_extend_low_i16x8_s = 0xA7, i64x2_extend_low_i32x4_s = 0xC7, f32x4_floor = 0x68, i16x8_extend_high_i8x16_s = 0x88, i32x4_extend_high_i16x8_s = 0xA8, i64x2_extend_high_i32x4_s = 0xC8, f32x4_trunc = 0x69, i16x8_extend_low_i8x16_u = 0x89, i32x4_extend_low_i16x8_u = 0xA9, i64x2_extend_low_i32x4_u = 0xC9, f32x4_nearest = 0x6A, i16x8_extend_high_i8x16_u = 0x8A, i32x4_extend_high_i16x8_u = 0xAA, i64x2_extend_high_i32x4_u = 0xCA, i8x16_shl = 0x6B, i16x8_shl = 0x8B, i32x4_shl = 0xAB, i64x2_shl = 0xCB, i8x16_shr_s = 0x6C, i16x8_shr_s = 0x8C, i32x4_shr_s = 0xAC, i64x2_shr_s = 0xCC, i8x16_shr_u = 0x6D, i16x8_shr_u = 0x8D, i32x4_shr_u = 0xAD, i64x2_shr_u = 0xCD, i8x16_add = 0x6E, i16x8_add = 0x8E, i32x4_add = 0xAE, i64x2_add = 0xCE, i8x16_add_sat_s = 0x6F, i16x8_add_sat_s = 0x8F, i8x16_add_sat_u = 0x70, i16x8_add_sat_u = 0x90, i8x16_sub = 0x71, i16x8_sub = 0x91, i32x4_sub = 0xB1, i64x2_sub = 0xD1, i8x16_sub_sat_s = 0x72, i16x8_sub_sat_s = 0x92, i8x16_sub_sat_u = 0x73, i16x8_sub_sat_u = 0x93, f64x2_ceil = 0x74, f64x2_nearest = 0x94, f64x2_floor = 0x75, i16x8_mul = 0x95, i32x4_mul = 0xB5, i64x2_mul = 0xD5, i8x16_min_s = 0x76, i16x8_min_s = 0x96, i32x4_min_s = 0xB6, i64x2_eq = 0xD6, i8x16_min_u = 0x77, i16x8_min_u = 0x97, i32x4_min_u = 0xB7, i64x2_ne = 0xD7, i8x16_max_s = 0x78, i16x8_max_s = 0x98, i32x4_max_s = 0xB8, i64x2_lt_s = 0xD8, i8x16_max_u = 0x79, i16x8_max_u = 0x99, i32x4_max_u = 0xB9, i64x2_gt_s = 0xD9, f64x2_trunc = 0x7A, i32x4_dot_i16x8_s = 0xBA, i64x2_le_s = 0xDA, i8x16_avgr_u = 0x7B, i16x8_avgr_u = 0x9B, i64x2_ge_s = 0xDB, i16x8_extadd_pairwise_i8x16_s = 0x7C, i16x8_extmul_low_i8x16_s = 0x9C, i32x4_extmul_low_i16x8_s = 0xBC, i64x2_extmul_low_i32x4_s = 0xDC, i16x8_extadd_pairwise_i8x16_u = 0x7D, i16x8_extmul_high_i8x16_s = 0x9D, i32x4_extmul_high_i16x8_s = 0xBD, i64x2_extmul_high_i32x4_s = 0xDD, i32x4_extadd_pairwise_i16x8_s = 0x7E, i16x8_extmul_low_i8x16_u = 0x9E, i32x4_extmul_low_i16x8_u = 0xBE, i64x2_extmul_low_i32x4_u = 0xDE, i32x4_extadd_pairwise_i16x8_u = 0x7F, i16x8_extmul_high_i8x16_u = 0x9F, i32x4_extmul_high_i16x8_u = 0xBF, i64x2_extmul_high_i32x4_u = 0xDF, f32x4_abs = 0xE0, f64x2_abs = 0xEC, f32x4_neg = 0xE1, f64x2_neg = 0xED, f32x4_sqrt = 0xE3, f64x2_sqrt = 0xEF, f32x4_add = 0xE4, f64x2_add = 0xF0, f32x4_sub = 0xE5, f64x2_sub = 0xF1, f32x4_mul = 0xE6, f64x2_mul = 0xF2, f32x4_div = 0xE7, f64x2_div = 0xF3, f32x4_min = 0xE8, f64x2_min = 0xF4, f32x4_max = 0xE9, f64x2_max = 0xF5, f32x4_pmin = 0xEA, f64x2_pmin = 0xF6, f32x4_pmax = 0xEB, f64x2_pmax = 0xF7, i32x4_trunc_sat_f32x4_s = 0xF8, i32x4_trunc_sat_f32x4_u = 0xF9, f32x4_convert_i32x4_s = 0xFA, f32x4_convert_i32x4_u = 0xFB, i32x4_trunc_sat_f64x2_s_zero = 0xFC, i32x4_trunc_sat_f64x2_u_zero = 0xFD, f64x2_convert_low_i32x4_s = 0xFE, f64x2_convert_low_i32x4_u = 0xFF, // relaxed-simd opcodes i8x16_relaxed_swizzle = 0x100, i32x4_relaxed_trunc_f32x4_s = 0x101, i32x4_relaxed_trunc_f32x4_u = 0x102, i32x4_relaxed_trunc_f64x2_s_zero = 0x103, i32x4_relaxed_trunc_f64x2_u_zero = 0x104, f32x4_relaxed_madd = 0x105, f32x4_relaxed_nmadd = 0x106, f64x2_relaxed_madd = 0x107, f64x2_relaxed_nmadd = 0x108, i8x16_relaxed_laneselect = 0x109, i16x8_relaxed_laneselect = 0x10a, i32x4_relaxed_laneselect = 0x10b, i64x2_relaxed_laneselect = 0x10c, f32x4_relaxed_min = 0x10d, f32x4_relaxed_max = 0x10e, f64x2_relaxed_min = 0x10f, f64x2_relaxed_max = 0x110, i16x8_relaxed_q15mulr_s = 0x111, i16x8_relaxed_dot_i8x16_i7x16_s = 0x112, i32x4_relaxed_dot_i8x16_i7x16_add_s = 0x113, f32x4_relaxed_dot_bf16x8_add_f32x4 = 0x114, }; /// Atomic opcodes that require a prefix `0xFE`. /// Each opcode represents a varuint32, meaning /// they are encoded as leb128 in binary. pub const AtomicsOpcode = enum(u32) { memory_atomic_notify = 0x00, memory_atomic_wait32 = 0x01, memory_atomic_wait64 = 0x02, atomic_fence = 0x03, i32_atomic_load = 0x10, i64_atomic_load = 0x11, i32_atomic_load8_u = 0x12, i32_atomic_load16_u = 0x13, i64_atomic_load8_u = 0x14, i64_atomic_load16_u = 0x15, i64_atomic_load32_u = 0x16, i32_atomic_store = 0x17, i64_atomic_store = 0x18, i32_atomic_store8 = 0x19, i32_atomic_store16 = 0x1A, i64_atomic_store8 = 0x1B, i64_atomic_store16 = 0x1C, i64_atomic_store32 = 0x1D, i32_atomic_rmw_add = 0x1E, i64_atomic_rmw_add = 0x1F, i32_atomic_rmw8_add_u = 0x20, i32_atomic_rmw16_add_u = 0x21, i64_atomic_rmw8_add_u = 0x22, i64_atomic_rmw16_add_u = 0x23, i64_atomic_rmw32_add_u = 0x24, i32_atomic_rmw_sub = 0x25, i64_atomic_rmw_sub = 0x26, i32_atomic_rmw8_sub_u = 0x27A, i32_atomic_rmw16_sub_u = 0x28A, i64_atomic_rmw8_sub_u = 0x29A, i64_atomic_rmw16_sub_u = 0x2A, i64_atomic_rmw32_sub_u = 0x2B, i32_atomic_rmw_and = 0x2C, i64_atomic_rmw_and = 0x2D, i32_atomic_rmw8_and_u = 0x2E, i32_atomic_rmw16_and_u = 0x2F, i64_atomic_rmw8_and_u = 0x30, i64_atomic_rmw16_and_u = 0x31, i64_atomic_rmw32_and_u = 0x32, i32_atomic_rmw_or = 0x33, i64_atomic_rmw_or = 0x34, i32_atomic_rmw8_or_u = 0x35, i32_atomic_rmw16_or_u = 0x36, i64_atomic_rmw8_or_u = 0x37, i64_atomic_rmw16_or_u = 0x38, i64_atomic_rmw32_or_u = 0x39, i32_atomic_rmw_xor = 0x3A, i64_atomic_rmw_xor = 0x3B, i32_atomic_rmw8_xor_u = 0x3C, i32_atomic_rmw16_xor_u = 0x3D, i64_atomic_rmw8_xor_u = 0x3E, i64_atomic_rmw16_xor_u = 0x3F, i64_atomic_rmw32_xor_u = 0x40, i32_atomic_rmw_xchg = 0x41, i64_atomic_rmw_xchg = 0x42, i32_atomic_rmw8_xchg_u = 0x43, i32_atomic_rmw16_xchg_u = 0x44, i64_atomic_rmw8_xchg_u = 0x45, i64_atomic_rmw16_xchg_u = 0x46, i64_atomic_rmw32_xchg_u = 0x47, i32_atomic_rmw_cmpxchg = 0x48, i64_atomic_rmw_cmpxchg = 0x49, i32_atomic_rmw8_cmpxchg_u = 0x4A, i32_atomic_rmw16_cmpxchg_u = 0x4B, i64_atomic_rmw8_cmpxchg_u = 0x4C, i64_atomic_rmw16_cmpxchg_u = 0x4D, i64_atomic_rmw32_cmpxchg_u = 0x4E, }; /// Enum representing all Wasm value types as per spec: /// https://webassembly.github.io/spec/core/binary/types.html pub const Valtype = enum(u8) { i32 = 0x7F, i64 = 0x7E, f32 = 0x7D, f64 = 0x7C, v128 = 0x7B, }; /// Reference types, where the funcref references to a function regardless of its type /// and ref references an object from the embedder. pub const RefType = enum(u8) { funcref = 0x70, externref = 0x6F, }; /// Limits classify the size range of resizeable storage associated with memory types and table types. pub const Limits = struct { flags: Flags, min: u32, max: u32, pub const Flags = packed struct(u8) { has_max: bool, is_shared: bool, reserved: u6 = 0, }; }; /// Initialization expressions are used to set the initial value on an object /// when a wasm module is being loaded. pub const InitExpression = union(enum) { i32_const: i32, i64_const: i64, f32_const: f32, f64_const: f64, global_get: u32, }; /// Describes the layout of the memory where `min` represents /// the minimal amount of pages, and the optional `max` represents /// the max pages. When `null` will allow the host to determine the /// amount of pages. pub const Memory = struct { limits: Limits, }; /// Wasm module sections as per spec: /// https://webassembly.github.io/spec/core/binary/modules.html pub const Section = enum(u8) { custom, type, import, function, table, memory, global, @"export", start, element, code, data, data_count, _, }; /// The kind of the type when importing or exporting to/from the host environment. /// https://webassembly.github.io/spec/core/syntax/modules.html pub const ExternalKind = enum(u8) { function, table, memory, global, }; /// Defines the enum values for each subsection id for the "Names" custom section /// as described by: /// https://webassembly.github.io/spec/core/appendix/custom.html?highlight=name#name-section pub const NameSubsection = enum(u8) { module, function, local, label, type, table, memory, global, elem_segment, data_segment, }; // type constants pub const element_type: u8 = 0x70; pub const function_type: u8 = 0x60; pub const result_type: u8 = 0x40; /// Represents a block which will not return a value pub const BlockType = enum(u8) { empty = 0x40, i32 = 0x7F, i64 = 0x7E, f32 = 0x7D, f64 = 0x7C, v128 = 0x7B, pub fn fromValtype(valtype: Valtype) BlockType { return @enumFromInt(@intFromEnum(valtype)); } }; // binary constants pub const magic = [_]u8{ 0x00, 0x61, 0x73, 0x6D }; // \0asm pub const version = [_]u8{ 0x01, 0x00, 0x00, 0x00 }; // version 1 (MVP) // Each wasm page size is 64kB pub const page_size = 64 * 1024;