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Improve LuaJIT runtime conversions

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Rerumu 2021-11-24 15:58:51 -05:00
parent bf7ccdae32
commit 586ebf1ac4
1 changed files with 15 additions and 6 deletions
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21
runtime/luajit.lua
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@ -5,11 +5,12 @@ local ffi = require('ffi')
local module = {} local module = {}
local to_signed = bit.tobit
local vla_u8 = ffi.typeof('uint8_t[?]') local vla_u8 = ffi.typeof('uint8_t[?]')
local u32 = ffi.typeof('uint32_t') local u32 = ffi.typeof('uint32_t')
local u64 = ffi.typeof('uint64_t') local u64 = ffi.typeof('uint64_t')
local i32 = ffi.typeof('int32_t')
local i64 = ffi.typeof('int64_t') local i64 = ffi.typeof('int64_t')
ffi.cdef [[ ffi.cdef [[
@ -38,7 +39,7 @@ do
lhs = tonumber(u32(lhs)) lhs = tonumber(u32(lhs))
rhs = tonumber(u32(rhs)) rhs = tonumber(u32(rhs))
return math.floor(lhs / rhs) return to_signed(math.floor(lhs / rhs))
end end
function div.u64(lhs, rhs) function div.u64(lhs, rhs)
@ -183,7 +184,7 @@ do
function shr.u32(lhs, rhs) function shr.u32(lhs, rhs)
local v = lj_rshift(u32(lhs), rhs) local v = lj_rshift(u32(lhs), rhs)
return tonumber(i32(v)) return to_signed(v)
end end
function shr.u64(lhs, rhs) function shr.u64(lhs, rhs)
@ -220,9 +221,17 @@ do
module.convert = convert module.convert = convert
module.reinterpret = reinterpret module.reinterpret = reinterpret
function extend.u64_i32(num) return i64(u64(num)) end function extend.u64_i32(num)
RE_INSTANCE.i32 = num
function wrap.i32_i64(num) return tonumber(i32(num)) end return RE_INSTANCE.i64
end
function wrap.i32_i64(num)
RE_INSTANCE.i64 = num
return RE_INSTANCE.i32
end
function convert.f32_i32(num) return num end function convert.f32_i32(num) return num end
function convert.f32_u32(num) return tonumber(u32(num)) end function convert.f32_u32(num) return tonumber(u32(num)) end
@ -290,7 +299,7 @@ do
function load.i64_u16(memory, addr) return i64(cast(ptr_u16, memory.data + addr)[0]) end function load.i64_u16(memory, addr) return i64(cast(ptr_u16, memory.data + addr)[0]) end
function load.i64_i32(memory, addr) return i64(cast(ptr_i32, memory.data + addr)[0]) end function load.i64_i32(memory, addr) return i64(cast(ptr_i32, memory.data + addr)[0]) end
function load.i64_u32(memory, addr) return i64(cast(ptr_u32, memory.data + addr)[0]) end function load.i64_u32(memory, addr) return i64(cast(ptr_u32, memory.data + addr)[0]) end
function load.i64(memory, addr) return i64(cast(ptr_i64, memory.data + addr)[0]) end function load.i64(memory, addr) return cast(ptr_i64, memory.data + addr)[0] end
function load.f32(memory, addr) return cast(ptr_f32, memory.data + addr)[0] end function load.f32(memory, addr) return cast(ptr_f32, memory.data + addr)[0] end
function load.f64(memory, addr) return cast(ptr_f64, memory.data + addr)[0] end function load.f64(memory, addr) return cast(ptr_f64, memory.data + addr)[0] end