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more metaprogram review

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ed
2026-08-19 11:05:48 -04:00
parent 1cbddc6708
commit 3440c9b59e
5 changed files with 197 additions and 206 deletions
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scripts/duffle_isa.lua
+3 -43
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@@ -18,7 +18,7 @@ M.DELAY_MARKERS = {
["DmaSlot_"] = true,
}
-- One row per encoder. Old table names are load-time views (build_isa_views).
-- One row per encoder. Read through duffle.instr.
M.INSTRUCTION = {
["BdSlot_"] = { cycles = 0, kind = "marker", },
["LdSlot_"] = { cycles = 0, kind = "marker", },
@@ -300,7 +300,7 @@ function M.instr (ident) return M.INSTRUCTION [ident] end
function M.gte_canon(ident) return M.ALIAS_TO_CANONICAL [ident] or ident end
function M.gte (ident) return M.GTE_COMMAND[M.gte_canon(ident)] end
local function build_isa_views()
local function build_alias_map()
M.ALIAS_TO_CANONICAL = {}
for canon, row in pairs(M.GTE_COMMAND) do
M.ALIAS_TO_CANONICAL[canon] = canon
@@ -308,48 +308,8 @@ local function build_isa_views()
M.ALIAS_TO_CANONICAL[alias] = canon
end
end
M.INSTRUCTION_LATENCY = {}
M.INSTRUCTION_GPR_EFFECTS = {}
M.IMMEDIATE_FIELD_WIDTHS = {}
M.GPR_VALUE_RULES = {}
M.CONTROL_TRANSFER_DELAY_SLOT_POLICIES = {}
for name, row in pairs(M.INSTRUCTION) do
M.INSTRUCTION_LATENCY[name] = row.cycles
if row.reads or row.writes then
M.INSTRUCTION_GPR_EFFECTS[name] = {
reads = row.reads or {},
writes = row.writes or {},
}
end
if row.imm then M.IMMEDIATE_FIELD_WIDTHS[name] = row.imm end
if row.value then M.GPR_VALUE_RULES [name] = row.value end
if (row.kind == "branch" or row.kind == "jump" or row.kind == "call")
and row.delay_slot ~= false then
M.CONTROL_TRANSFER_DELAY_SLOT_POLICIES[name] = {
family = row.kind,
suppress_arg1 = row.suppress_arg1,
}
end
end
M.GTE_COMMAND_ALIASES = {}
M.GTE_COMMAND_INPUTS = {}
M.GTE_COMMAND_OUTPUTS = {}
M.GTE_COMMAND_LATCH_WINDOWS = {}
for canon, row in pairs(M.GTE_COMMAND) do
M.GTE_COMMAND_ALIASES [canon] = canon
M.INSTRUCTION_LATENCY [canon] = row.cycles
M.INSTRUCTION_GPR_EFFECTS[canon] = { reads = {}, writes = {} }
for _, alias in ipairs(row.aliases or {}) do
M.GTE_COMMAND_ALIASES [alias] = canon
M.INSTRUCTION_LATENCY [alias] = row.cycles
M.INSTRUCTION_GPR_EFFECTS[alias] = { reads = {}, writes = {} }
end
M.GTE_COMMAND_INPUTS [canon] = row.inputs
M.GTE_COMMAND_OUTPUTS [canon] = row.outputs
M.GTE_COMMAND_LATCH_WINDOWS[canon] = row.latch
end
end
build_isa_views()
build_alias_map()
--- GTE control-register alias groups.