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Add load.string to the runtime

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This commit is contained in:
Rerumu 2022-08-22 21:45:48 -04:00
parent 0a9f9fd6ad
commit 9f27e956a8
2 changed files with 19 additions and 0 deletions
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6
codegen/luajit/runtime/runtime.lua
View File

@ -706,6 +706,12 @@ do
return by_offset(memory.data, addr).f64
end
function load.string(memory, addr, len)
local start = cast(alias_t, memory.data) + addr
return ffi.string(start, len)
end
function store.i32_n8(memory, addr, value)
by_offset(memory.data, addr).i8 = value
end

13
codegen/luau/runtime/runtime.lua
View File

@ -622,6 +622,7 @@ do
local math_floor = math.floor
local string_byte = string.byte
local string_char = string.char
local string_unpack = string.unpack
local reinterpret_f32_i32 = module.reinterpret.f32_i32
@ -830,6 +831,18 @@ do
return reinterpret_f64_i64(raw)
end
function load.string(memory, addr, len)
local buffer = table.create(len)
for i = 1, len do
local raw = load_byte(memory.data, addr + i - 1)
buffer[i] = string_char(raw)
end
return table.concat(buffer)
end
function store.i32_n8(memory, addr, value)
store_byte(memory.data, addr, value)
end