""" Copyright (C) 2021 Alyssa Rosenzweig Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice (including the next paragraph) shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. """ opcodes = {} immediates = {} enums = {} class Opcode(object): def __init__(self, name, dests, srcs, imms, is_float, can_eliminate, encoding_16, encoding_32): self.name = name self.dests = dests self.srcs = srcs self.imms = imms self.is_float = is_float self.can_eliminate = can_eliminate self.encoding_16 = encoding_16 self.encoding_32 = encoding_32 class Immediate(object): def __init__(self, name, ctype): self.name = name self.ctype = ctype class Encoding(object): def __init__(self, description): (exact, mask, length_short, length_long) = description # Convenience if length_long is None: length_long = length_short self.exact = exact self.mask = mask self.length_short = length_short self.extensible = length_short != length_long if self.extensible: assert(length_long == length_short + (4 if length_short > 8 else 2)) def op(name, encoding_32, dests = 1, srcs = 0, imms = [], is_float = False, can_eliminate = True, encoding_16 = None): encoding_16 = Encoding(encoding_16) if encoding_16 is not None else None encoding_32 = Encoding(encoding_32) if encoding_32 is not None else None opcodes[name] = Opcode(name, dests, srcs, imms, is_float, can_eliminate, encoding_16, encoding_32) def immediate(name, ctype = "uint32_t"): imm = Immediate(name, ctype) immediates[name] = imm return imm def enum(name, value_dict): enums[name] = value_dict return immediate(name, "enum agx_" + name) L = (1 << 15) _ = None FORMAT = immediate("format", "enum agx_format") IMM = immediate("imm") WRITEOUT = immediate("writeout") INDEX = immediate("index") COMPONENT = immediate("component") CHANNELS = immediate("channels") TRUTH_TABLE = immediate("truth_table") ROUND = immediate("round") SHIFT = immediate("shift") MASK = immediate("mask") BFI_MASK = immediate("bfi_mask") LOD_MODE = immediate("lod_mode", "enum agx_lod_mode") DIM = immediate("dim", "enum agx_dim") SCOREBOARD = immediate("scoreboard") ICOND = immediate("icond") FCOND = immediate("fcond") NEST = immediate("nest") INVERT_COND = immediate("invert_cond") NEST = immediate("nest") TARGET = immediate("target", "agx_block *") PERSPECTIVE = immediate("perspective", "bool") SR = enum("sr", { 0: 'threadgroup_position_in_grid.x', 1: 'threadgroup_position_in_grid.y', 2: 'threadgroup_position_in_grid.z', 4: 'threads_per_threadgroup.x', 5: 'threads_per_threadgroup.y', 6: 'threads_per_threadgroup.z', 8: 'dispatch_threads_per_threadgroup.x', 9: 'dispatch_threads_per_threadgroup.y', 10: 'dispatch_threads_per_threadgroup.z', 48: 'thread_position_in_threadgroup.x', 49: 'thread_position_in_threadgroup.y', 50: 'thread_position_in_threadgroup.z', 51: 'thread_index_in_threadgroup', 52: 'thread_index_in_subgroup', 53: 'subgroup_index_in_threadgroup', 56: 'active_thread_index_in_quad', 58: 'active_thread_index_in_subgroup', 62: 'backfacing', 80: 'thread_position_in_grid.x', 81: 'thread_position_in_grid.y', 82: 'thread_position_in_grid.z', }) FUNOP = lambda x: (x << 28) FUNOP_MASK = FUNOP((1 << 14) - 1) def funop(name, opcode): op(name, (0x0A | L | (opcode << 28), 0x3F | L | (((1 << 14) - 1) << 28), 6, _), srcs = 1, is_float = True) # Listing of opcodes funop("floor", 0b000000) funop("srsqrt", 0b000001) funop("dfdx", 0b000100) funop("dfdy", 0b000110) funop("rcp", 0b001000) funop("rsqrt", 0b001001) funop("sin_pt_1", 0b001010) funop("log2", 0b001100) funop("exp2", 0b001101) funop("sin_pt_2", 0b001110) funop("ceil", 0b010000) funop("trunc", 0b100000) funop("roundeven", 0b110000) op("fadd", encoding_16 = (0x26 | L, 0x3F | L, 6, _), encoding_32 = (0x2A | L, 0x3F | L, 6, _), srcs = 2, is_float = True) op("fma", encoding_16 = (0x36, 0x3F, 6, 8), encoding_32 = (0x3A, 0x3F, 6, 8), srcs = 3, is_float = True) op("fmul", encoding_16 = ((0x16 | L), (0x3F | L), 6, _), encoding_32 = ((0x1A | L), (0x3F | L), 6, _), srcs = 2, is_float = True) op("mov_imm", encoding_32 = (0x62, 0xFF, 6, 8), encoding_16 = (0x62, 0xFF, 4, 6), imms = [IMM]) op("iadd", encoding_32 = (0x0E, 0x3F | L, 8, _), srcs = 2, imms = [SHIFT]) op("imad", encoding_32 = (0x1E, 0x3F | L, 8, _), srcs = 3, imms = [SHIFT]) op("bfi", encoding_32 = (0x2E, 0x7F | (0x3 << 26), 8, _), srcs = 3, imms = [BFI_MASK]) op("bfeil", encoding_32 = (0x2E | L, 0x7F | L | (0x3 << 26), 8, _), srcs = 3, imms = [BFI_MASK]) op("asr", encoding_32 = (0x2E | L | (0x1 << 26), 0x7F | L | (0x3 << 26), 8, _), srcs = 2) op("icmpsel", encoding_32 = (0x12, 0x7F, 8, 10), srcs = 4, imms = [ICOND]) op("fcmpsel", encoding_32 = (0x02, 0x7F, 8, 10), srcs = 4, imms = [FCOND]) # sources are coordinates, LOD, texture, sampler, offset # TODO: anything else? op("texture_sample", encoding_32 = (0x32, 0x7F, 8, 10), # XXX WRONG SIZE srcs = 5, imms = [DIM, LOD_MODE, MASK, SCOREBOARD]) # sources are base, index op("device_load", encoding_32 = (0x05, 0x7F, 6, 8), srcs = 2, imms = [FORMAT, MASK, SCOREBOARD]) op("wait", (0x38, 0xFF, 2, _), dests = 0, can_eliminate = False, imms = [SCOREBOARD]) op("get_sr", (0x72, 0x7F | L, 4, _), dests = 1, imms = [SR]) # Essentially same encoding op("ld_tile", (0x49, 0x7F, 8, _), dests = 1, srcs = 0, can_eliminate = False, imms = [FORMAT]) op("st_tile", (0x09, 0x7F, 8, _), dests = 0, srcs = 1, can_eliminate = False, imms = [FORMAT]) for (name, exact) in [("any", 0xC000), ("none", 0xC200)]: op("jmp_exec_" + name, (exact, (1 << 16) - 1, 6, _), dests = 0, srcs = 0, can_eliminate = False, imms = [TARGET]) # TODO: model implicit r0l destinations op("pop_exec", (0x52 | (0x3 << 9), ((1 << 48) - 1) ^ (0x3 << 7) ^ (0x3 << 11), 6, _), dests = 0, srcs = 0, can_eliminate = False, imms = [NEST]) for is_float in [False, True]: mod_mask = 0 if is_float else (0x3 << 26) | (0x3 << 38) for (cf, cf_op) in [("if", 0), ("else", 1), ("while", 2)]: name = "{}_{}cmp".format(cf, "f" if is_float else "i") exact = 0x42 | (0x0 if is_float else 0x10) | (cf_op << 9) mask = 0x7F | (0x3 << 9) | mod_mask | (0x3 << 44) imms = [NEST, FCOND if is_float else ICOND, INVERT_COND] op(name, (exact, mask, 6, _), dests = 0, srcs = 2, can_eliminate = False, imms = imms, is_float = is_float) op("bitop", (0x7E, 0x7F, 6, _), srcs = 2, imms = [TRUTH_TABLE]) op("convert", (0x3E | L, 0x7F | L | (0x3 << 38), 6, _), srcs = 2, imms = [ROUND]) op("ld_vary", (0x21, 0xBF, 8, _), srcs = 1, imms = [CHANNELS, PERSPECTIVE]) op("ld_vary_flat", (0xA1, 0xBF, 8, _), srcs = 1, imms = [CHANNELS]) op("st_vary", None, dests = 0, srcs = 2, can_eliminate = False) op("stop", (0x88, 0xFFFF, 2, _), dests = 0, can_eliminate = False) op("trap", (0x08, 0xFFFF, 2, _), dests = 0, can_eliminate = False) op("writeout", (0x48, 0xFF, 4, _), dests = 0, imms = [WRITEOUT], can_eliminate = False) op("p_combine", _, srcs = 4) op("p_extract", _, srcs = 1, imms = [COMPONENT])